Zhang, TX
Bob Lixin Zhang, Sugar Land, TX US
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20110048729 | PULL TUBE SLEEVE STRESS JOINT FOR FLOATING OFFSHORE STRUCTURE - The present disclosure provides an improved design for a pull tube sleeved stress joint and associated pull tube for managing stresses on a catenary riser for a floating offshore structure. The pull tube sleeve stress joint includes at least one sleeve surrounding a length of the pull tube with an annular gap between the sleeve and pull tube and a link ring therebetween. For embodiments having a plurality of sleeves, a first sleeve can be spaced by an annular first gap from the pull tube and coupled thereto with a first ring between the pull tube and the first sleeve, and a second sleeve can be spaced by an annular second gap from the first sleeve and coupled thereto with a second ring between the first sleeve and the second sleeve. Both pull tube and sleeves can be made with regular pipe segments welded together with regular girth welds. | 03-03-2011 |
Buyue Zhang, Plano, TX US
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20100020193 | METHOD AND APPARATUS FOR WHITE BALANCE - A method and apparatus for white balancing. The method comprising estimating the color temperature of at least a portion of the image, wherein the color temperature estimation algorithm is based on computing histogram correlations of at least a portion of at least one reference image and at least a portion of at least one target image, and correcting the white balance of at least a portion of the image utilizing the estimated color temperature. | 01-28-2010 |
20100149420 | METHOD AND APPARATUS FOR IMPROVING AUTOMATIC WHITE BALANCE WITH SCENE INFORMATION - A method and apparatus for automatic white balancing of an image. The method includes retrieving scene analysis of the image, determining at least one of the type of the scene and a scene content map utilizing the scene analysis of the image, performing scene adaptive white balance, if overall scene category type is used, perform white balance by applying global R, G, B gains optimized for the global scene type, and if scene segmentation map is used, perform locally adaptive white balance by applying an R, G, B gain map optimized for each scene content. | 06-17-2010 |
20100194918 | Methods and Systems for Automatic White Balance - A method for calibrating automatic white balance (AWB) is provided that includes using a plurality of references for AWB that include color temperature references, wherein an AWB failure is detected in an image, generating a scene prototype reference based on the image, and adding the generated scene prototype reference to the references for AWB. A method for calibrating AWB is provided that includes selecting an image as a scene prototype, wherein the selected image was captured by a second imaging sensor different from a first imaging sensor, transforming the selected image into a scene prototype image for the first imaging sensor, generating a scene prototype reference using the scene prototype image for the first imaging sensor, and adding the generated scene prototype reference to references for AWB that include color temperature references. | 08-05-2010 |
20110123112 | METHOD AND APPARATUS FOR IMPROVING THE STABILITY OF HISTOGRAM CORRELATION ALGORITHM - A method and apparatus for improving stability of histogram correlation based image and video processing algorithms. The method includes computing a histogram for target signal and reference signal for generating a target histogram and a reference histogram, performing low pass filtering of the input signal and the reference signal and producing smoothed histograms, and performing correlation on the smoothed histograms for improving stability of histogram correlation. | 05-26-2011 |
20110187891 | Methods and Systems for Automatic White Balance - A method for automatic white balance (AWB) in a digital system is provided that includes applying predetermined flash red, blue, and green gain values stored in the digital system to white balance a digital image when a flash is used to capture the digital image, and applying computed red, blue, and green gain values to white balance a digital image when the flash is not used to capture the digital image. Another method for AWB is provided that includes computing red, blue, and green gain values for white balancing a digital image, adjusting the computed red, blue, and green gain values with respective predetermined flash red, blue, and green gain adjustment values when the flash is used to capture the digital image, and applying the adjusted red, blue, and green gain values to white balance the digital image. | 08-04-2011 |
20110205389 | Methods and Systems for Automatic White Balance - A method for calibrating automatic white balance (AWB) in a digital system is provided that includes capturing an image of a test target under a natural lighting condition, generating a first color temperature reference from the captured image, and outputting AWB configuration data for the digital system, wherein the AWB configuration data comprises the first color temperature reference and a second color temperature reference generated using the test target under simulated lighting conditions. A method for calibrating automatic white balance (AWB) in a digital system comprising a first imaging sensor is provided that includes receiving a reference for AWB that was generated using an image captured using a second imaging sensor, and compensating a histogram reference into a histogram reference for AWB for the first imaging sensor in the digital system based on R, G, B adjustment values from the second imaging sensor to the first imaging sensor. | 08-25-2011 |
20110285745 | METHOD AND APPARATUS FOR TOUCH SCREEN ASSISTED WHITE BALANCE - A method and apparatus for performing automatic white balance utilizing a touch screen. The method includes determining an area on a touch screen for performing automatic white balance, extracting portion of a frame relating to the determined area, determining red, green and blue values of the extracted portion of the frame, and performing automatic white balance based on the determined red, green and blue values. | 11-24-2011 |
20120128236 | METHOD AND APPARATUS FOR STEREO MISALIGNMENT ESTIMATION USING MODIFIED AFFINE OR PERSPECTIVE MODEL - A method and apparatus for estimating stereo misalignment using modified affine or perspective model. The method includes dividing a left frame and a right frame into blocks, comparing horizontal and vertical boundary signals in the left frame and the right frame, estimating the horizontal and the vertical motion vector for each block in a reference frame, selecting a reliable motion vectors from a set of motion vectors, dividing the selected block into smaller features, feeding the data to an affine or a perspective transformation model to solve for the model parameters, running the model parameters through a temporal filter, portioning the estimated misalignment parameters between the left frame and right frame, and modifying the left frame and the right frame to save some boundary space. | 05-24-2012 |
20120188399 | Methods and Systems for Automatic White Balance - A method for compensating an automatic white balance (AWB) reference generated for a first image sensor is provided that includes computing a red adjustment factor, a green adjustment factor, and a blue adjustment factor based on an average red value, an average green value, and an average blue value of the first image sensor and an average red value, an average green value, and an average blue value of a second image sensor, and modifying a red value, a green value, a blue value, and chromaticity values of the AWB reference based on the red adjustment factor, the green adjustment factor, and the blue adjustment factor to generate a compensated reference for the second image sensor. A method for tuning AWB references based on changes in chromaticity values of the references is also provided. | 07-26-2012 |
20130016187 | METHOD AND APPARATUS FOR AUTO-CONVERGENCE FOR STEREOSCOPIC IMAGES AND VIDEOS - A method and apparatus for reducing convergence accommodation conflict. The method includes estimating disparities between images for different lens, analyzing the estimated disparities, selecting a point of convergence, determining the amount of shift relating to the convergence point selected, and performing adjustment to the disparity to maintain a disparity value below a threshold. | 01-17-2013 |
20130033490 | Method, System and Computer Program Product for Reorienting a Stereoscopic Image - For reorienting a stereoscopic image of first and second views, a depth map is generated in response to disparities of features between the first and second views. The depth map assigns depths to pixels of the stereoscopic image. In response to the depth map and the second view, a replacement of the first view is synthesized. | 02-07-2013 |
20130100125 | Method, System and Computer Program Product for Enhancing a Depth Map - A first depth map is generated in response to a stereoscopic image from a camera. The first depth map includes first pixels having valid depths and second pixels having invalid depths. In response to the first depth map, a second depth map is generated for replacing at least some of the second pixels with respective third pixels having valid depths. For generating the second depth map, a particular one of the third pixels is generated for replacing a particular one of the second pixels. For generating the particular third pixel, respective weight(s) is/are assigned to a selected one or more of the first pixels in response to value similarity and spatial proximity between the selected first pixel(s) and the particular second pixel. The particular third pixel is computed in response to the selected first pixel(s) and the weight(s). | 04-25-2013 |
20130278792 | METHOD, SYSTEM AND COMPUTER PROGRAM PRODUCT FOR ENHANCING WHITE BALANCE OF AN IMAGE - In response to an image, a likelihood of flicker within the image is estimated. In response to the estimated likelihood, references are selected from among first and second sets of references. The first set of references are responsive to a first set of reference images captured under particular illumination. The second set of references are responsive to a second set of reference images captured under fluorescent illumination. In response to the selected references, one or more gains are generated for enhancing white balance of the image. | 10-24-2013 |
20130342725 | METHODS AND SYSTEMS FOR AUTOMATIC WHITE BALANCE - A method for calibrating automatic white balance (AWB) in a digital system is provided that includes capturing an image of a test target under a natural lighting condition, generating a first color temperature reference from the captured image, and outputting AWB configuration data for the digital system, wherein the AWB configuration data comprises the first color temperature reference and a second color temperature reference generated using the test target under simulated lighting conditions. A method for calibrating automatic white balance (AWB) in a digital system comprising a first imaging sensor is provided that includes receiving a reference for AWB that was generated using an image captured using a second imaging sensor, and compensating a histogram reference into a histogram reference for AWB for the first imaging sensor in the digital system based on R, G, B adjustment values from the second imaging sensor to the first imaging sensor. | 12-26-2013 |
20140043445 | METHOD AND SYSTEM FOR CAPTURING A STEREOSCOPIC IMAGE - At least first, second and third imaging sensors simultaneously capture at least first, second and third images of a scene, respectively. An image pair is selected from among the images. A screen displays the image pair to form the stereoscopic image. The image pair is selected in response to at least one of: a size of the screen; and a distance of a user away from the screen. | 02-13-2014 |
20140241620 | Illumination Estimation Using Natural Scene Statistics - A method for estimating illumination of an image captured by a digital system is provided that includes computing a feature vector for the image, identifying at least one best reference illumination class for the image from a plurality of predetermined reference illumination classes using the feature vector, an illumination classifier, and predetermined classification parameters corresponding to each reference illumination class, and computing information for further processing of the image based on the at least one best reference illumination class, wherein the information is at least one selected from a group consisting of color temperature and white balance gains. | 08-28-2014 |
20150023594 | Transforming Wide Dynamic Range Images to Reduced Dynamic Range Images - A method of transforming an N-bit raw wide dynamic range (WDR) Bayer image to a K-bit raw red-green-blue (RGB) image wherein N>K is provided that includes converting the N-bit raw WDR Bayer image to an N-bit raw RGB image, computing a luminance image from the N-bit raw RGB image, computing a pixel gain value for each luminance pixel in the luminance image to generate a gain map, applying a hierarchical noise filter to the gain map to generate a filtered gain map, applying the filtered gain map to the N-bit raw RGB image to generated a gain mapped N-bit RGB image, and downshifting the gain mapped N-bit RGB image by (N−K) to generate the K-bit RGB image. | 01-22-2015 |
20150062354 | METHOD AND SYSTEM FOR CAPTURING IMAGES WITH A FRONT-FACING CAMERA - A camera points in a first direction and is positioned within borders of a screen of a display device. The screen faces in a second direction that is substantially parallel to the first direction. While the camera views a scene, the screen displays an image of the viewed scene. While the screen displays the image, the image is written for storage on a computer-readable medium. | 03-05-2015 |
20150077582 | METHOD AND SYSTEM FOR ADAPTING A DEVICE FOR ENHANCEMENT OF IMAGES - A device stores a list of geographic regions and respective sets of device parameters for achieving target visual characteristics thereof. One of the geographic regions is selected. In response to the selected geographic region's respective set of device parameters, the device automatically adapts for achieving the selected geographic region's target visual characteristics in the device's enhancement of images. At least one of the images is enhanced with the adapted device. | 03-19-2015 |
Chang-Gang Zhang, Plano, TX US
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20090232102 | Walsh Code Management in a Code Division Multiple Access Cellular Wireless Communication System - A cellular wireless communication system and method of operation manages Walsh codes in order to ensure that sufficient Walsh codes are available to prevent call blocking and to support additional hand-off operations. In an initial operating condition, the cellular wireless communication system services normal hand-off operations in which a maximum number of cells and sectors may participate in hand-off. With hand-off operations according to the present invention, each cell or sector participating in hand-off for a mobile terminal uses a unique Walsh code for covering its forward link signals. When the number of Walsh codes available for servicing new calls is reduced so that it meets or exceeds a Walsh code availability threshold, the number of cells and sectors that may participate in hand-off is reduced from the maximum number. In the number of participating cells/sectors results in release or non-use of some Walsh codes. In subsequent operations when sufficient Walsh codes are available for servicing hand-off operations, a greater number, up to the maximum number of cells and sectors may again participate in hand-off of the mobile terminal. | 09-17-2009 |
Chaojiong Zhang, College Station, TX US
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20090203253 | Contact Terminal With Self-Adjusting Contact Surface - A self-adjusting contact includes a plurality of conductive fibers, such as wires, arrayed along an axis perpendicular to the major plane of the battery terminal. The contact may include straight or corrugated wires, aligned substantially along the axis. The wires may be arranged in a bundle and held within an electrically conductive holder, which may be cylindrical or bell-shaped, and the wire bundle may be soldered to the bottom of a well formed in the holder. | 08-13-2009 |
Chaoming Zhang, Austin, TX US
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20090295613 | PERFORMING ANALOG-TO-DIGITAL CONVERSION BY COMPUTING DELAY TIME BETWEEN TRAVELING WAVES IN TRANSMISSION LINES - A method and device for converting an analog input electrical signal to a digital signal. A plurality of integrated active and/or passive transmission lines may be implemented with signal-dependant propagation velocities. The delay differences of pulses traveling through these transmission lines are compared, and the collective results are used to evaluate and subsequently quantize the input signal. | 12-03-2009 |
Chengcheng Zhang, Richardson, TX US
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20110117061 | Ex Vivo Expansion of Human Hematopoietic Stem Cells - Methods and kits for expanding the number of hematopoietic stem cells are provided. The methods comprise incubating cells in medium comprising isolated IGFBP-2 and an angiopoietin-like protein (Angptl). Expanded HSCs are provided as well as culture media and kits for the expansion of human HSCs in a defined medium. Methods of administering expanded human HSCs to and individual are provided as well as methods of treating an individual by administering certain growth factors and cytokines. | 05-19-2011 |
20140234266 | Cultured Hematopoietic Stem Cells and Method for Expansion and Analysis Thereof - Hematopoietic stem cells and methods for ex vivo expansion of hematopoietic stem cells are provided. The methods comprise culturing the cells in a media containing an effective amount insulin-like growth factor (IGF), fibroblast growth factor (FGF), thrombopoietin (TPO), and stem cell factor (SCF), under conditions sufficient for expansion of said cells. Methods for identifying expanded hematopoeitic stem cells and kits for ex vivo expansion of hematopoietic stem cells are also provided. | 08-21-2014 |
20140308747 | Ex Vivo Expansion of Human Hematopoietic Stem Cells - Methods and kits for expanding the number of hematopoietic stem cells are provided. The methods comprise incubating cells in medium comprising isolated IGFBP-2 and an angiopoietin-like protein (Angptl). Expanded HSCs are provided as well as culture media and kits for the expansion of human HSCs in a defined medium. Methods of administering expanded human HSCs to and individual are provided as well as methods of treating an individual by administering certain growth factors and cytokines. | 10-16-2014 |
Cheng-Xiong Zhang, Plano, TX US
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20110090955 | Predictive Adaptive Scan Ordering for Video Coding - An apparatus comprising an inter-prediction motion compensation unit, a transform unit coupled to the inter-prediction motion compensation unit, a quantization unit coupled to the transform unit such that the transform unit is positioned between the inter-prediction motion compensation unit and the quantization unit, a scanning unit coupled to the quantization unit such that the quantization unit is positioned between the transform unit and the scanning unit, and an adaptive scan order predictor unit coupled to the inter-prediction motion compensation unit, the quantization unit, and the scanning unit. An apparatus comprising an entropy decoding unit, an inverse scanning unit coupled to the entropy decoding unit, an inverse quantization unit coupled to the inverse scanning unit such that the inverse scanning unit is positioned between the entropy coding unit and the inverse quantization unit, and an adaptive scan order predictor unit coupled to the entropy decoding unit and the inverse scanning unit. | 04-21-2011 |
20120082221 | Multiple Predictor Set For Intra Coding with Intra Mode Prediction - An apparatus comprising a codec configured to predict an intra mode for a considered block based on a plurality of group numbers and a plurality of corresponding group indices for a plurality used modes of a plurality of adjacent blocks to the considered block, wherein a group number corresponding to an actual intra mode for the considered block is coded and sent if the predicted intra mode does not match the actual intra mode. Also disclosed is a network component comprising a processor configured to predict an intra mode for a considered block based on a minimum group number and a minimum group index of two used modes for two adjacent blocks of the considered block, and a transmitter configured to send coded bits of a group number for an actual intra mode for the considered block if the actual intra mode does not match the predicted intra mode. | 04-05-2012 |
Danhua Zhang, Houston, TX US
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20090120642 | METHODS TO ENHANCE GAS PRODUCTION FOLLOWING A RELATIVE-PERMEABILITY-MODIFIER TREATMENT - Provided embodiments relate to introducing a water-drainage-rate-enhancing agent into a subterranean formation to enhance gas production following a relative-permeability-modifier treatment to decrease undesired water production. An exemplary embodiment provides a method of treating a subterranean formation such that initiation of gas production is enhanced following the treatment, the method comprising: introducing a relative-permeability modifier into at least a portion of the subterranean formation such that the relative-permeability modifier reduces permeability of the portion to aqueous fluids; and introducing a water-drainage-rate-enhancing agent into at least a portion of the subterranean formation. Another exemplary embodiment provides a treatment fluid comprising a carrier fluid, a relative-permeability modifier, and a water-drainage-rate-enhancing agent. | 05-14-2009 |
Dekai Zhang, College Station, TX US
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20110105383 | METHODS AND COMPOSITIONS FOR STIMULATION OF MAMMALIAN INNATE IMMUNE RESISTANCE TO PATHOGENS - Embodiments of the invention are directed to methods of treating, inhibiting or attenuating a microbial infection in an individual who has or is at risk for developing such an infection, comprising the step of administering an effective amount of a StIR polypeptide or peptide or fragment or derivative or analog thereof to the individual. | 05-05-2011 |
Desheng Zhang, Missouri City, TX US
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20100201540 | SYSTEM AND METHOD FOR USING DUAL TELEMETRY - A system and a method use dual telemetry for tools located in a wellbore. A first telemetry system and a second telemetry system coordinate communication with the tools. Both the first telemetry system and the second telemetry system may transmit data regarding the tools and/or drilling conditions from the tools to a surface location simultaneously. The first telemetry system or the second telemetry system may communicate with the surface location if communication using the other telemetry system is interrupted. The first telemetry system and the second telemetry system may have a master/slave relationship so that data requests from a specific telemetry system do not interfere with data requests from the other telemetry system. | 08-12-2010 |
20130251083 | Synchronization Between Devices - The present disclosure relates to a method to determine a clock signal when separate clocks are used. In one embodiment, a disciplined clock system comprising an update subsystem and a synthesis subsystem is provided. A first clock phase estimate is provided to the update subsystem and used, along with the update subsystem, to determine a frequency offset estimate and a phase offset estimate. The clock signal is determining using the frequency offset estimate, the phase offset estimate, and the synthesis subsystem. Alternatively, two clocks can be synchronized by generating a signal associated with a first clock; modulating the signal; transmitting the modulated signal; receiving the modulated signal by a receiver associated with a second clock; correlating the received signal; determining the time of arrival of the received signal; determining the time difference between the two clocks; and synchronizing the two clocks. | 09-26-2013 |
20140055277 | System and Method for Using Dual Telemetry - A system and a method use dual telemetry for tools located in a wellbore. A first telemetry system and a second telemetry system coordinate communication with the tools. Both the first telemetry system and the second telemetry system may transmit data regarding the tools and/or drilling conditions from the tools to a surface location simultaneously. The first telemetry system or the second telemetry system may communicate with the surface location if communication using the other telemetry system is interrupted. The first telemetry system and the second telemetry system may have a master/slave relationship so that data requests from a specific telemetry system do not interfere with data requests from the other telemetry system. | 02-27-2014 |
Dongan Zhang, Plano, TX US
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20100302958 | CONNECTION MANAGER FOR A WIRELESS COMMUNICATION DEVICE - Techniques for supporting communication for a wireless device are described. In an aspect, an embedded connection manager may reside within a radio subsystem and support communication for the wireless device. The connection manager may receive at least one connection request sent by at least one application, select at least one radio for use, and provide the selected radio(s) to the application(s). In another aspect, communication may be supported using multiple radios. M out of N available radios may be selected for use, and K applications may be mapped to the M selected radios, where M>1, N>1, and K≧1. In yet another aspect, communication may be supported using profiles, which may define the operation of the wireless device to obtain connectivity. In yet another aspect, communication may be supported with auxiliary services, which are services that assist the wireless device to obtain connectivity. | 12-02-2010 |
20100303008 | METHOD AND APPARATUS FOR OBTAINING EXTENDED CONNECTIVITY VIA PEER-TO-PEER COMMUNICATION - Techniques for supporting communication with extended connectivity via peer-to-peer communication are described. In one design, a first device may determine at least one radio selected for use on a second device. The first device may communicate with at least one communication network via the at least one radio on the second device. At least one application running on the first device may be mapped to the radio(s) on the second device based on the capabilities of the radio(s) and the requirements of the application(s). In another design, the first device may communicate with a first communication network via the second device and may receive configuration information sent to it via the second device. The first device may access a second communication network using the configuration information, which may include authentication information for the first device for the second communication network. | 12-02-2010 |
Dong-An Zhang, Plano, TX US
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20110149764 | RADIO SELECTION IN A MULTI-RADIO DEVICE - Techniques for supporting communication by a wireless device having a set of radios and supporting a set of applications are described. In an aspect, radio selection may be performed based on interference information and additional information to obtain good performance. In one design, a plurality of radios available for use on the wireless device may be identified. Interference information indicative of interference between the plurality of radios may be obtained, e.g., from an interference database or a converted interference database. Additional information used for radio selection may also be obtained and may include information for communication profiles, communication preferences, application requirements, radio capabilities, etc. At least one radio may be selected for use for communication from among the plurality of radios based on the interference information and the additional information. | 06-23-2011 |
Dongmao Zhang, Houston, TX US
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20090053818 | Quantitative proteomics with isotopic substituted raman active labeling - A labeling reagent having a distinct Raman, or surface enhanced Raman, spectral signature is used for the control and analysis samples. The labeling reagents can be fluorescent dyes with different isotopic substituents, such as the substitution of some hydrogen atoms for deuterium atoms. Such labeling does not have any detectable effect on separation retention. Raman spectroscopy is used for detection purposes. By combining SERS and SERRS, a concentration ratio prediction error of less than 3% can be obtained over four orders of magnitude of total concentration with up to a factor of 3 concentration ratio range. The method is reliable, reproducible and more sensitive than methods based on absolute SERS/SERRS intensity correlations, with no internal standard, or using a different molecule (rather than an IEIS) as a SERS/SERRS internal standard. | 02-26-2009 |
20100040549 | Composition for Targeted Drug Delivery and Controlled Release - Disclosed herein are novel targeted drug delivery and controlled release methods and compositions where optically absorbing nanoparticles, such as nanoshells, are functionalized on their surfaces with thermolabile molecules that bind the drug molecules to be delivered. The linkage between the thermolabile moiety on the nanoparticles and the drug is deliberately designed or selected to be temperature sensitive, so that upon illumination of the nanoparticle at a wavelength of light, the drug molecules on the nanoparticles will be released. Targeting molecules, such as antibodies, aptamers or other molecules like folic acid, can be concurrently bound to the nanoparticle surface to deliver the nanoparticle to specifically targeted cells or tissues prior to the photothermally induced drug release. In this way the nanoparticles can be advantageously concentrated on the target prior to illumination, which makes the disclosed compositions both a targeted delivery and a controllable drug release vehicle. | 02-18-2010 |
20120178181 | DEVICE AND METHOD FOR LABEL-FREE DETECTION OF DNA HYBRIDIZATION - A device and method for detecting the hybridization of an unmodified target deoxyribonucleic acid (DNA) molecule including exposing a Raman substrate to the unmodified target DNA molecule, where the unmodified target DNA molecule is a complementary DNA molecule to a thiol-terminated probe DNA molecule covalently linked to the Raman substrate. Also, the thiol-terminated probe DNA molecule includes an adenine analog substituted for adenine. The hybridization of the unmodified target DNA molecule to the thiol-terminated probe DNA molecule is detected by measuring a Raman spectroscopic response of the Raman substrate. | 07-12-2012 |
Etuan Zhang, Houston, TX US
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20080217016 | Creating fluid injectivity in tar sands formations - Methods for treating a tar sands formation are described herein. Methods for treating a tar sands may include heating a portion of a hydrocarbon layer in the formation from one or more heaters located in the portion. The heat may be controlled to increase the permeability of at least part of the portion to create an injection zone in the portion with an average permeability sufficient to allow injection of a fluid through the injection zone. A drive fluid and/or an oxidizing fluid may be provided into the injection zone. At least some hydrocarbons are produced from the portion. | 09-11-2008 |
20080277113 | Heating tar sands formations while controlling pressure - Methods for treating a tar sands formation are described herein. Methods may include heating at least a section of a hydrocarbon layer in the formation from a plurality of heaters located in the formation. A pressure in the majority of the section may be maintained below a fracture pressure of the formation. The pressure in the majority of the section may be reduced to a selected pressure after the average temperature reaches a temperature that is above 240° C. and is at or below pyrolysis temperatures of hydrocarbons in the section. At least some hydrocarbon fluids may be produced from the formation. | 11-13-2008 |
20080283246 | Heating tar sands formations to visbreaking temperatures - Methods for treating a tar sands formation are described herein. Methods may include heating at least a section of a hydrocarbon layer in the formation from a plurality of heaters located in the formation. The heat may be controlled so that at least a majority of the section reaches an average temperature of between 200° C. and 240° C., which results in visbreaking of at least some hydrocarbons in the section. At least some visbroken hydrocarbon fluids may be produced from the formation. | 11-20-2008 |
20090101346 | In situ recovery from a hydrocarbon containing formation - An oil shale formation may be treated using an in situ thermal process. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. Heat input into the formation may be controlled to raise the temperature of portion at a selected rate during pyrolysis of hydrocarbons within the formation. A mixture of hydrocarbons, H | 04-23-2009 |
20090321071 | CONTROLLING AND ASSESSING PRESSURE CONDITIONS DURING TREATMENT OF TAR SANDS FORMATIONS - A method for treating a tar sands formation includes providing heat to at least part of a hydrocarbon layer in the tar sands formation from a plurality of heaters located in the formation. Heat is allowed to transfer from the heaters to at least a portion of the formation. A pressure in the portion of the formation is controlled such that the pressure remains below a fracture pressure of the formation overburden while allowing the portion of the formation to heat to a selected average temperature of at least about 280° C. and at most about 300° C. The pressure in the portion of the formation is reduced to a selected pressure after the portion of the formation reaches the selected average temperature. | 12-31-2009 |
20100276141 | CREATING FLUID INJECTIVITY IN TAR SANDS FORMATIONS - Methods for treating a tar sands formation are described herein. Methods for treating a tar sands may include heating a portion of a hydrocarbon layer in the formation from one or more heaters located in the portion. The heat may be controlled to increase the permeability of at least part of the portion to create an injection zone in the portion with an average permeability sufficient to allow injection of a fluid through the injection zone. A drive fluid and/or an oxidizing fluid may be provided into the injection zone. At least some hydrocarbons including mobilized hydrocarbons are produced from the portion. | 11-04-2010 |
20110088904 | IN SITU RECOVERY FROM A HYDROCARBON CONTAINING FORMATION - An oil shale formation may be treated using an in situ thermal process. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. Heat input into the formation may be controlled to raise the temperature of portion at a selected rate during pyrolysis of hydrocarbons within the formation. A mixture of hydrocarbons, H | 04-21-2011 |
20130008660 | IN SITU RECOVERY FROM A HYDROCARBON CONTAINING FORMATION - An oil shale formation may be treated using an in situ thermal process. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. Heat input into the formation may be controlled to raise the temperature of portion at a selected rate during pyrolysis of hydrocarbons within the formation. A mixture of hydrocarbons, H | 01-10-2013 |
20140027119 | IN SITU RECOVERY FROM A HYDROCARBON CONTAINING FORMATION - An oil shale formation may be treated using an in situ thermal process. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. Heat input into the formation may be controlled to raise the temperature of portion at a selected rate during pyrolysis of hydrocarbons within the formation. A mixture of hydrocarbons, H | 01-30-2014 |
20140305640 | IN SITU THERMAL PROCESSING OF AN OIL SHALE FORMATION USING CONDUCTIVE HEATING - Methods and systems of treating an oil shale formation using an in situ thermal process are described herein. A method of treating an oil shale formation in situ includes providing heat from one or more heat sources to at least a portion of the formation; allowing the heat to transfer from at least the portion to a selected section of the formation substantially by conduction of heat; pyrolyzing at least some hydrocarbons within the selected section of the formation; and producing a mixture from the formation. | 10-16-2014 |
Gary Zhang, Plano, TX US
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20080248640 | Method for reducing polysilicon gate defects in semiconductor devices - Semiconductor devices and fabrication methods are provided, in which gate defects associated with photoresist stress after plasma trim/etch are substantially reduced. The method comprises forming a gate dielectric layer above a semiconductor body substrate; coating the gate dielectric layer with a photoresist coating; exposing and developing the photoresist coating; performing a resist annealing; and trimming and etching the photoresist coating. | 10-09-2008 |
Guohong Zhang, Plano, TX US
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20090029272 | Merging Sub-Resolution Assist Features of a Photolithographic Mask - Merging sub-resolution assist features includes receiving a mask pattern that includes the sub-resolution assist features. A first sub-resolution assist feature is selected to merge with a second sub-resolution assist feature. A merge bar width of a merge bar is established. A distance between the first sub-resolution assist feature and the second sub-resolution assist feature is determined. A merging technique is determined in accordance with the distance and the merge bar width. The first sub-resolution assist feature and the second sub-resolution assist feature are merged according to the identified merging technique. | 01-29-2009 |
20120011478 | MERGING SUB-RESOLUTION ASSIST FEATURES OF A PHOTOLITHOGRAPHIC MASK - Merging sub-resolution assist features includes receiving a mask pattern that includes the sub-resolution assist features. A first sub-resolution assist feature is selected to merge with a second sub-resolution assist feature. A merge bar width of a merge bar is established. A distance between the first sub-resolution assist feature and the second sub-resolution assist feature is determined. A merging technique is determined in accordance with the distance and the merge bar width. The first sub-resolution assist feature and the second sub-resolution assist feature are merged according to the identified merging technique. | 01-12-2012 |
Guomin Zhang, Mckinney, TX US
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20100040804 | Liquid crystal display device and associated liquid crystal media for use in the same - A reverse mode liquid crystal display device, including: a first substantially transparent substrate having an electrically conductive material associated therewith; a second substrate having an electrically conductive material associated therewith; an insulating layer associated with at least one of the first and second substrates; and a liquid crystal medium contained within a chamber positioned between the first and second substrates which includes an organometallic chelate; and a nematic, negative dielectric anisotropic liquid crystal mixture. | 02-18-2010 |
20100097563 | Liquid crystal display device and associated liquid crystal media for use in the same - A reverse mode liquid crystal display device, including: a first substantially transparent substrate having an electrically conductive material associated therewith; a second substrate having an electrically conductive material associated therewith; an insulating layer associated with at least one of the first and second substrates; and a liquid crystal medium contained within a chamber positioned between the first and second substrates which includes a macrocyclic ether and/or a borane; and a nematic, negative dielectric anisotropic liquid crystal mixture. | 04-22-2010 |
Guomin Zhang, Richardson, TX US
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20100271571 | POLYMERIC DISPERSED LIQUID CRYSTAL LIGHT SHUTTER DEVICE - A polymer dispersed liquid crystal light shutter device and method for use of the same are disclosed. First and second substrates are disposed substantially parallel. A polymer binder system is interposed between the first and second substrates and a plurality of liquid crystals are dispersed in the polymer binder system. The liquid crystal shutter device is able to switch between a high light absorbing dark state and a low light absorbing transparent state, and visa versa, with a low driving voltage. The liquid crystal shutter device includes formulations of liquid crystal mixtures having nematic liquid crystals and polymer systems to provide a wide viewing angle, low driving voltage, high contrast ratio, for example. | 10-28-2010 |
Haoyue Zhang, Dallas, TX US
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20080236271 | Downhole seal assembly having embedded sensors and method for use of same - A downhole seal ( | 10-02-2008 |
Heping Zhang, Cypress, TX US
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20090269141 | FLOATING SYSTEM CONNECTED TO AN UNDERWATER LINE STRUCTURE AND METHODS OF USE - There is disclosed a floating system positioned in a body of water having a water bottom, the system comprising a host member floating in the water; an elongated underwater line structure, comprising a top connected to the host; a bottom extending to the seabed and adapted to connect to a flowline lying on the seabed; a first portion of the line structure being shaped concave upward; a second portion of the line structure being shaped concave upward; and a transition segment between being shaped concave downward, the transition segment located between the first portion and the second portion. | 10-29-2009 |
20100129161 | HYBRID RISER SYSTEMS AND METHODS - There is disclosed a floating system positioned in a body of water having a water bottom, the system comprising a host member floating on a surface of the water; a flotation module floating under the surface of the water; a flexible hose connecting the host member to the flotation module; and an elongated underwater line structure, comprising a top portion connected to the flotation module; a bottom portion extending to the water bottom and adapted to connect to a flowline lying on the water bottom; and at least one of the top portion and the bottom portion comprising a catenary configuration. | 05-27-2010 |
Huixiang Zhang, Fort Worth, TX US
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20090215735 | TOPICAL SOLUTION FORMULATIONS CONTAINING A CORTICOSTEROID AND A CYCLODEXTRIN - Solution formulations containing a corticosteroid, cyclodextrin, and xanthan gum are disclosed. The formulations are intended for topical application to the eye, ear, or nose. | 08-27-2009 |
Jane Qing Zhang, Sugar Land, TX US
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20090269141 | FLOATING SYSTEM CONNECTED TO AN UNDERWATER LINE STRUCTURE AND METHODS OF USE - There is disclosed a floating system positioned in a body of water having a water bottom, the system comprising a host member floating in the water; an elongated underwater line structure, comprising a top connected to the host; a bottom extending to the seabed and adapted to connect to a flowline lying on the seabed; a first portion of the line structure being shaped concave upward; a second portion of the line structure being shaped concave upward; and a transition segment between being shaped concave downward, the transition segment located between the first portion and the second portion. | 10-29-2009 |
20100129161 | HYBRID RISER SYSTEMS AND METHODS - There is disclosed a floating system positioned in a body of water having a water bottom, the system comprising a host member floating on a surface of the water; a flotation module floating under the surface of the water; a flexible hose connecting the host member to the flotation module; and an elongated underwater line structure, comprising a top portion connected to the flotation module; a bottom portion extending to the water bottom and adapted to connect to a flowline lying on the water bottom; and at least one of the top portion and the bottom portion comprising a catenary configuration. | 05-27-2010 |
20110005443 | SPAR STRUCTURES - A spar platform comprising a deck; a buoyant tank assembly, comprising a first buoyant section connected to the deck, the first buoyant section comprises an aspect ratio from 0.001 to 1, the first buoyant section aspect ratio defined as a vertical draft of the first buoyant section divided by a diameter of the first buoyant section; a second buoyant section disposed beneath the first buoyant section, the second buoyant section comprises an aspect ratio from 0.001 to 2, the second buoyant section aspect ratio defined as a vertical height of the second buoyant section divided by a diameter of the second buoyant section; and a rigid buoyant section spacing structure connecting the first and second buoyant sections in manner providing a horizontally extending vertical gap there between, the gap comprises an aspect ratio from 0.15 to 2, the gap aspect ratio defined as a vertical height of the gap divided by a diameter of the first buoyant section; a counterweight; and a counterweight spacing structure connecting the counterweight to the buoyant tank assembly. | 01-13-2011 |
Jeff Zhang, Plano, TX US
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20110134795 | UNIFIED NETWORK PLANNING AND PROVISIONING - An exemplary system includes a network systems database storing order information and diversity information and a link utilization database storing link utilization information. A data manager is configured to validate diversity and link utilization of the order information using the link utilization information and the diversity information. An exemplary method includes storing order information and diversity information in the network systems database, and storing link utilization information in the link utilization database. The method further includes accessing the order information, the diversity information, and the link utilization information with the data manager, and validating diversity and link utilization of the order information with the data manager using the link utilization information and the diversity information. | 06-09-2011 |
Jianfa Zhang, Houston, TX US
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20110059916 | Methods and Compositions for Inducing Torpor in a Subject - The present invention relates to the discovery the 5′-AMP and analogues thereof can be used to induce a state of torpor or suspended animation in subjects, as exemplified by studies carried out in laboratory mice. In these studies; mice were injected with high doses of 5′-AMP, which was found to result in a decoupling of the animals' body temperature regulation mechanism accompanied by a reduction in the animals' core body temperature, which tended to lower towards the ambient environmental temperature. It was further discovered that the introduction of high levels of 5′-AMP resulted in an induction of fat regulation genes such as procolipase (Clps) in tissues and organs that do not normally express Clps, this in turn was accompanied by a shift in metabolism from a primarily glycolytic energy metabolism (which is inhibited at lower temperatures) to one that relied primarily on the liberation and metabolism of free fatty acids. Substantial medical and other applications that arise out of this discovery are also disclosed. | 03-10-2011 |
Jianfeng Zhang, Sugarland, TX US
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20080296890 | Cryogenic Pipeline Configurations and Methods - A pipe-in-pipe pipeline has a bulkhead that transfers thermal stress from an inner pipe to an outer pipe, wherein at least part of the bulkhead forms a conduit for a product traveling through the inner pipe. Most preferably, the pipeline is a cryogenic pipeline for transport of liquefied natural gas. Where desirable, insulating material may be disposed between the inner pipe and outer pipe, while spacers may maintain the distance between the pipes. | 12-04-2008 |
Jinguo Zhang, Katy, TX US
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20110082057 | METHODS FOR CROSSLINKING WATER SOLUBLE POLYMERS FOR USE IN WELL APPLICATIONS - A method for forming a well and pipeline treating fluid is provided. The method comprises combining a cross-linkable gelling polymer, a scavenging compound capable of reducing a concentration of divalent and polyvalent metal ions and salts thereof available for reaction, a hydration solvent and optionally an acid. The resulting mixture has a pH ranging from about 3 to about 7 and a first viscosity. The mixture is maintained at conditions suitable for hydration of the cross-linkable gelling polymer until the mixture has a second viscosity that is greater than the first viscosity. The mixture is combined with an aqueous based fluid and at least one cross-linking agent. The pH of the mixture is raised to a sufficient level to allow a desired degree of cross-linking to occur. Other methods, a well and pipeline treating gel and a well and pipeline treating fluid are also provided. | 04-07-2011 |
20120231980 | WELL FLUID AND METHOD OF SERVICING A WELL - A well servicing fluid for reducing polymer degradation is disclosed. The well servicing fluid is formulated with components comprising: at least one free radical scavenger, with the proviso that the free radical scavenger is not erythorbate, lignin or lignin derivatives; at least one polymer and an aqueous based solvent. Methods for servicing a well employing well servicing fluids of the present disclosure are also disclosed. | 09-13-2012 |
Jinping Zhang, Houston, TX US
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20100317002 | METHODS AND KITS FOR DIAGNOSING LUNG CANCER - Provided is a method of identifying a genetically abnormal cell in a sputum sample, the method comprising: (a) staining a sputum sample using a morphological stain so as to identify a lower airway tract cell or lung cell in the sputum sample; and (b) staining the sputum sample using fluorescent in situ hybridization (FISH) so as to identify in the lower airway tract cell or lung cell a genetic abnormality in at least one of human chromosome 3p22.1 and 10q22-23, thereby identifying the genetically abnormal cell in the sputum sample. Also provided are methods and kits of diagnosing lung cancer by detecting a presence of genetically abnormal cells above a predetermined threshold in a sputum sample. | 12-16-2010 |
John (youhe) Zhang, Tomball, TX US
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20090090562 | CUTTING ELEMENT HAVING STRESS REDUCED INTERFACE - Cutting elements include an ultra-hard body, e.g., comprising diamond, that is attached to substrate, e.g., comprising a cermet. An interface exists between the body and the substrate, and an angle of departure as measured between the interface and a free edge of the cutting element within one or both of the body and substrate, is less than about 90 degrees to provide a desired stress reduction along the interface. The angle of departure can be from about 3 to 87 degrees. The desired reduced angle of departure is provided by a surface feature disposed along an outer side surface of the cutting element adjacent a free edge of the interface. The surface feature can in the form of a groove disposed circumferentially around the body and/or substrate outer side surface, that is configured to provide the desired reduced angle of departure within the body and/or substrate. | 04-09-2009 |
Joyce H. Zhang, Sugar Land, TX US
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20110065613 | OIL-BASED INSULATING PACKER FLUID - A packer or annular fluid includes a hydrocarbon fluid; and a gelling agent; wherein the packer fluid is a yield power law fluid. A method for preparing a packer fluid includes preparing a mixture of a hydrocarbon fluid, and a gelling agent; heating the mixture to a selected temperature; and shearing the mixture. A method for emplacing a packer fluid into an annulus includes preparing the packer fluid that includes a hydrocarbon fluid and a gelling agent, wherein the packer fluid is a yield power law fluid; and pumping the packer fluid into the annulus. | 03-17-2011 |
Jubo Zhang, College Station, TX US
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20080281136 | CATALYST AND METHOD FOR CONVERTING NATURAL GAS TO HIGHER CARBON COMPOUNDS - A catalyst composition and process facilitates the oxidative reforming of low molecular weight hydrocarbons, such as methane, to other hydrocarbons having 2 or more carbon atoms (“C | 11-13-2008 |
20130211144 | MULTI-STAGE REACTION FOR MITIGATINGTHE PRESENCE OF UNWANTED CATIONS - Methods for producing organic products that may include the steps of providing a feed stream comprising a first organic salt and a second organic salt to a reactor; reacting the feed stream at a first temperature to convert at least some of the first organic salt to the organic products, wherein reacting the feed stream results in a first product stream comprising the organic products and second organic salt; separating at least a portion of the organic products from the first product stream resulting in a first reduced product stream comprising second organic salt; and reacting the first reduced product stream at a second temperature to convert the second organic salt to a second organic products. | 08-15-2013 |
20140335586 | SYSTEM AND METHOD FOR CONVERTING ACIDS TO HYDROCARBON FUELS - Herein disclosed is a method comprising: converting at least a portion of the biomass into medium-chain fatty acids or carboxylic acids ranging from C4 to C9; reacting at least a portion of the medium-chain fatty acids or carboxylic acids in a ketonization reactor to produce a ketonization product; and reacting at least a portion of the ketonization product in a hydrodeoxygenation reactor to remove substantially all oxygen and produce a hydrodeoxygenation product comprising n-paraffins. Herein also disclosed is a system comprising: a fermentation unit to convert the biomass into medium-chain fatty acids or carboxylic acids ranging from C4 to C9; a ketonization reactor configured to receive at least a portion of the medium-chain fatty acids or carboxylic acids and to produce a ketonization product; and a hydrodeoxygenation reactor configured to receive at least a portion of the ketonization product and to produce a hydrodeoxygenation product comprising n-paraffins. | 11-13-2014 |
Kui Zhang, Austin, TX US
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20110032996 | USING DUAL HDVICP COPROCESSOR TO ACCELERATE DM6467 H.264 DECODER - Systems and methods are disclosed for utilizing multiple co-processors, of a multiprocessor processing device, in tandem to improve performance for H.264 video decoding operations. The video decoding operation may be split across the multiple High Definition Video Image Co-Processors (HDVICPs) of a multiprocessor device such as Texas Instrument's DM6467 utilizing a spatially shifted temporal split to improve overall performance of the video decoding operation while conforming to the H.264 standard. | 02-10-2011 |
Leonard Lin Zhang, Sugar Land, TX US
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20090319190 | SYSTEM AND METHOD FOR SEISMIC TRACE ANALYSIS - Seismic data are processed to reduce or eliminate aliasing due, for example to sparse or irregular sampling. An iterative method includes an inhibiting function used in conjunction with a function evaluating a magnitude of Fourier coefficients that together act to reduce the effects of aliased energies and preferentially select true energies. Computational steps are conducted primarily in k-space, without returning to x-space, thereby reducing computational costs. | 12-24-2009 |
20100135115 | MULTIPLE ANISOTROPIC PARAMETER INVERSION FOR A TTI EARTH MODEL - A method for determining values of anisotropic model parameters of a Tilted Transversely Isotropic (TTI) Earth model, the anisotropic parameters including P-wave velocity (Vp | 06-03-2010 |
20120185171 | MULTIPLE ANISOTROPIC PARAMETER INVERSION FOR A TTI EARTH MODEL USING WELL DATA - A method for determining values of anisotropic model parameters of a Tilted Transversely Isotropic (TTI) Earth model, the method including obtaining an initial TTI earth model that substantially flattens common-imaging-point gathers and substantially ties seismic data to well data; inputting checkshot data and/or VSP data to determine updated values of Vp | 07-19-2012 |
Libo Zhang, Katy, TX US
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20090192718 | SUBSURFACE PREDICTION METHOD AND SYSTEM - A method of predicting subsurface properties of a geologic formation includes acquiring seismic data for a subsurface region including the geologic formation of interest, computing seismic attributes of the measured seismic data over at least part of this geologic formation, determining internally consistent rock properties representative of the geologic formation, generating models of the same part of the geologic formation with these rock properties, computing synthetic seismic data from the models, computing the same attributes from these synthetic seismic data, and using Bayesian analysis to predict, from the probability of modeled attributes given the models, the probability of the actual subsurface properties given the measured attributes. | 07-30-2009 |
Lixin Zhang, Sugar Land, TX US
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20100192829 | SPAR HULL BELLY STRAKE DESIGN AND INSTALLATION METHOD - A spar hull for a floating vessel can include a hard tank having a belly portion, a fixed strake coupled to the outer surface of the tank and a folding strake coupled to the belly portion of the tank, the folding strake having one or more strake panels and one or more support frames. A method for installing folding belly strakes on a spar hull may include providing a floating spar hull having a hard tank with a belly side, rotating the spar so that the belly side is in a first workable position, coupling at least one folding strake to the belly side of the spar, and coupling the strake in a folded position for transport. The method may include positioning the spar hull offshore in a transport position, upending the spar hull, unfolding the strake, fixing the strake in the unfolded position and installing the spar hull. | 08-05-2010 |
20120272888 | SPAR HULL BELLY STRAKE DESIGN AND INSTALLATION METHOD - A spar hull for a floating vessel can include a hard tank having a belly portion, a fixed strake coupled to the outer surface of the tank and a folding strake coupled to the belly portion of the tank, the folding strake having one or more strake panels and one or more support frames. A method for installing folding belly strakes on a spar hull may include providing a floating spar hull having a hard tank with a belly side, rotating the spar so that the belly side is in a first workable position, coupling at least one folding strake to the belly side of the spar, and coupling the strake in a folded position for transport. The method may include positioning the spar hull offshore in a transport position, upending the spar hull, unfolding the strake, fixing the strake in the unfolded position and installing the spar hull. | 11-01-2012 |
Mimi W. Zhang, Houston, TX US
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20100305437 | System and method for intra-body communication - A method comprising generating a mechanical signal in a mammal, the mechanical signal having a frequency no more than 50,000 Hz, transmitting the mechanical signal through the musculoskeletal system in the mammal, and sensing the mechanical signal from the musculoskeletal system. A method of triggering an internal event comprising generating a mechanical signal internal or external to a mammal, transmitting the signal through the musculoskeletal system of the mammal, detecting the mechanical signal, and triggering an event in response to the mechanical signal. A method of drug delivery comprising generating a mechanical signal internal or external to a mammal, transmitting the signal through the musculoskeletal system of the mammal, detecting the mechanical signal, and delivering the drug in response to the mechanical signal. | 12-02-2010 |
Qianmei Zhang, Katy, TX US
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20100230585 | NOVEL CONFIGURATION DESIGN OF DETECTOR SHIELDING FOR WIRELINE AND MWD/LWD DOWN-HOLE THERMAL NEUTRON POROSITY TOOLS - An apparatus for estimating a property of an earth formation penetrated by a borehole, the apparatus includes: a carrier configured to be conveyed through the borehole; a neutron source disposed at the carrier and configured to irradiate the earth formation with neutrons; a neutron detector disposed at the carrier and configured to detect neutrons reflected by the earth formation to the detector; a neutron reflector disposed partially around the detector, an area of the detector not covered by the reflector being configured to admit the reflected neutrons; and a neutron absorber disposed at least around the reflector. | 09-16-2010 |
20100314535 | SOURCE COMPENSATED FORMATION DENSITY MEASUREMENT METHOD BY USING A PULSED NEUTRON GENERATOR - A downhole instrument for estimating density of sub-surface materials includes: a neutron source, a source monitoring detector, a near detector and a far detector. Each of the detectors may be coupled to an electronics unit adapted for receiving a detection signal from each of the detectors and compensating the detection signal for at least one of the near detector and the far detector according to the detection signal of the source monitoring detector. A method for estimating density is provided. | 12-16-2010 |
20100314536 | NUCLEAR DETECTORS BUILT DIRECTLY INTO SHIELDING OR MODULATING MATERIAL - An apparatus for measuring radiation in a borehole penetrating the Earth, the apparatus includes: a downhole tool having a structure defining a cavity; and one or more radiation detection components integrated into the cavity and configured to measure the radiation. An apparatus conveyable through a borehole for measuring radiation downhole and a method of producing a downhole apparatus for measuring radiation are provided. | 12-16-2010 |
20110224906 | Method and Apparatus for Neutron Porosity Measurement Using a Neural Network - A method of estimating formation porosity using a neural network for neutron porosity tools. In the training stage, the near-to-far ratio, environmental variables, such as mineralogy, borehole size, standoff etc., are fed to the inputs and the neural network is trained for obtaining the related true porosity (the output). The trained neural network is implanted into tool's firmware for the real time porosity measurement, accounting for the environmental effects considered during training | 09-15-2011 |
Shuxing Zhang, Pearland, TX US
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20110144066 | SMALL MOLECULE INHIBITORS OF THE PLECKSTRIN HOMOLOGY DOMAIN AND METHODS FOR USING SAME - Pleckstrin homology domain binding compounds, pharmaceutical compositions including such compounds, and methods for their use are described herein. | 06-16-2011 |
20130184317 | SMALL MOLECULE INHIBITORS OF THE PLECKSTRIN HOMOLOGY DOMAIN AND METHODS FOR USING SAME - Pleckstrin homology domain binding compounds, pharmaceutical compositions including such compounds, and methods for their use are described herein. | 07-18-2013 |
Shuyuan Zhang, Sugar Land, TX US
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20100055763 | METHOD FOR THE PRODUCTION AND PURIFICATION OF RETROVIRAL VECTORS - The present invention addresses the need to improve the yields of viral vectors when grown in cell culture systems. In particular, it has been demonstrated that for adenovirus, the use of low-medium perfusion rates in an attached cell culture system provides for improved yields. In other embodiments, the inventors have shown that there is improved Ad-p53 production with cells grown in serum-free conditions, and in particular in serum-free suspension culture. Also important to the increase of yields is the use of detergent lysis. Combination of these aspects of the invention permits purification of virus by a single chromatography step that results in purified virus of the same quality as preparations from double CsCl banding using an ultracentrifuge. | 03-04-2010 |
20100105124 | NOVEL METHOD FOR THE PRODUCTION AND PURIFICATION OF ADENOVIRAL VECTORS - The present invention relates to improved methods for producing adenovirus compositions wherein host cells are grown in a bioreactor and purified by size partitioning purification to provide purified adenovirus compositions. | 04-29-2010 |
Tiejun Zhang, Bellaire, TX US
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20080308503 | Separation process - A separation process for separating two or more immiscible liquids using fiber-film technology is disclosed. This separation process is especially useful in the separation of disulfide oil formed during the oxidation of spent caustic solution that was used to remove sulfur contaminates from light hydrocarbons. | 12-18-2008 |
20090065434 | Removal of residual sulfur compounds from a caustic stream - A process for the removal of residual sulfur compounds from a liquid caustic stream is disclosed. One embodiment of my invention adsorbs disulfides from a caustic stream using an activated carbon adsorbent while another combines both oxidation and adsorption in single step to remove residual sulfur compounds from a rich caustic stream using metal phthalocyanine supported on a solid adsorbent. This process is especially useful as a polishing step in a caustic regeneration process flow scheme. | 03-12-2009 |
20100320124 | SEPARATION PROCESS - A separation process for separating two or more immiscible liquids using contactors utilizing high surface area vertical hanging fibers is disclosed. This separation process is especially useful in the separation of disulfide oil formed during the oxidation of spent caustic solution that was used to remove sulfur contaminates from light hydrocarbons. | 12-23-2010 |
20110127194 | Hydrocarbon Treatment Process - In a catalytic treatment process, mercaptans in sour hydrocarbon are oxidized to disulfide oils using an aqueous treatment solution containing a chelated polyvalent metal catalyst, alkali metal hydroxide, and the alkali metal salt of at least one alcohol in a non-dispersive mixing apparatus wherein an upgraded hydrocarbon containing the disulfide oils is produced. | 06-02-2011 |
20110163008 | HYDROCARBON TREATMENT PROCESS - In a catalytic treatment process, mercaptans in sour hydrocarbon are oxidized to disulfide oils using an aqueous treatment solution containing a chelated polyvalent metal catalyst, alkali metal hydroxide, and the alkali metal salt of at least one alcohol in a non-dispersive mixing apparatus wherein an upgraded hydrocarbon containing the disulfide oils is produced. | 07-07-2011 |
20130020239 | APPARATUS FOR TREATING A WASTE STREAM - An integrated unit operations for the treatment of a waste stream, such as spent caustic, is provided in a single vertical vessel having at least three separate zones: a mixing, a settling, and a mass transfer zone. | 01-24-2013 |
20130026086 | SEPARATION PROCESS - A separation process for separating two or more immiscible liquids using contactors utilizing high surface area vertical hanging fibers is disclosed. This separation process is especially useful in the separation of disulfide oil formed during the oxidation of spent caustic solution that was used to remove sulfur contaminates from light hydrocarbons. | 01-31-2013 |
20140014593 | Contactor and Separation Apparatus and Process of Using Same - In an improved fiber-film type contactor/separator an enhanced coalescing zone is provided by the presence of a disengagement device connected to a shroud that contains a bundle of high surface area vertical hanging fibers, where the enhanced coalescing zone diverts a portion of an admixture of immiscible liquids to flow radially in a path not parallel to the vertical axis of the hanging fibers whereby the diverted portion of liquids contacts a coalescing surface to cause at least one of the liquids to coalesce into droplets. The immiscible liquids are allowed to settle into separate phase layers and first and second outlets selectively remove the higher density liquid from the lower density liquid. | 01-16-2014 |
20150048006 | HYDROCARBON TREATMENT PROCESS - In a catalytic treatment process, mercaptans in sour hydrocarbon are oxidized to disulfide oils using an aqueous treatment solution containing a chelated polyvalent metal catalyst, alkali metal hydroxide, and the alkali metal salt of at least one alcohol in a non-dispersive mixing apparatus wherein an upgraded hydrocarbon containing the disulfide oils is produced. | 02-19-2015 |
Weibiao Zhang, Plano, TX US
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20110140673 | Pulse width modulated battery charging - A battery management system for charging a battery by a charger includes a transistor and either a charge pump or a push-pull output driver. The transistor increases and decreases an electrical connection between the battery and a voltage from the charger and transmits a charge current from the charger to the battery by turning on and off in response to a pulse width modulated drive signal generated by the charge pump or the push-pull output driver. The charge pump or the push-pull output driver increases the drive signal when the voltage from the charger is above a pre-charge threshold voltage and decreases the drive signal when the voltage from the charger is below the pre-charge threshold voltage. | 06-16-2011 |
20110195744 | Reverse Voltage Protection Circuit - A voltage protection circuit that has a protection transistor coupled between a voltage supply pin of an integrated circuit and a voltage output terminal of the integrated circuit. A biasing circuit is coupled to a control node of the protection transistor and configured to cause the protection transistor to turn on to form a low impedance path between the voltage supply pin and the voltage output terminal when a positive supply voltage is coupled to the voltage supply terminal and to cause the protection transistor to turn off when a negative supply voltage is coupled to the voltage supply terminal. An electro-static discharge (ESD) protection circuit may also be connected between the voltage supply pin and a reference node that is configured to conduct a negative static discharge current for period of time, and to not conduct a negative current continuously. | 08-11-2011 |
20120112686 | LOW-VOLTAGE DUAL-POWER-PATH MANAGEMENT ARCHITECTURE FOR RECHARGEABLE BATTERY MONITORING SOLUTIONS - A control circuit of a battery power-path management circuit establishes a first power path between a battery input node and an output node when the input node voltage is larger than a charger input node voltage and a second power path between the charger input node and the output node when the voltage on the charger input node is larger than the battery input node voltage. It controls the second power path to provide power to the output node, enabling battery charging and protection over a battery voltage range from about zero volts. It has low power consumption and can support wide-swing power supply voltage from as low as one volt to as high as maximum allowed Vds of drain-extended devices. It can use smaller device sizes because the PMOS switch gate voltage is 0V when the power supply is not too high. | 05-10-2012 |
20130188286 | Low-Impedance High-Swing Power Supply with Integrated High Positive and Negative DC Voltage Protection and Electro-Static Discharge (ESD) Protection - An apparatus comprises a first PFET including a first intrinsic body diode; an electrostatic discharge (ESD) subcircuit coupled to a source of the first PFET; a reverse bias voltage element, such as a zener diode, an anode of which is coupled to a gate of the first PFET; a second PFET having a source coupled to a cathode of the zener diode a capacitor coupled to a gate the second PFET; and a first resistor coupled to the gate of the second PFET. The apparatus can protect against both positive and negative electro static transient discharge events. | 07-25-2013 |
Weibiao Na Zhang, Plano, TX US
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20110169452 | Battery Cell Tab Monitor - A battery cell tab monitoring apparatus includes a conductive element electrically connected between two battery cells. The conductive element is connected to a sensing circuit including a pull-down current source connected to pull current from the conductive element and/or a pull-up current source connected to drive current into the conductive element. A voltage measuring circuit is connected to sense voltages during operation of the pull-down current source and the pull-up current source to be used to determine the status of the conductive element. For instance, voltages beyond certain fixed or variable thresholds indicate that the conductive element is flexing or cracking, which can be a precursor to its breaking. Voltages beyond other fixed or variable thresholds indicate that the conductive element is fully disconnected. The current sources used to push and pull the sensing currents may be used to bring the battery cells into balance when an imbalance is detected. | 07-14-2011 |
Weijia Zhang, Round Rock, TX US
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20080256219 | SYSTEM AND METHOD FOR DEPLOYMENT OF A SOFTWARE IMAGE TO A PLURALITY OF TARGET DEVICES - A system and method for deployment of a software image to a plurality of target devices are disclosed. A method may include communicatively coupling a root node device to a plurality of internal node devices, and communicatively coupling a plurality of leaf node devices to the root node devices and the internal node devices. The root node device may transmit a software image from the root node device to at least two of the internal node devices, and each internal node device may transmit the software image to at least one other internal node device or leaf node device. | 10-16-2008 |
20100268925 | SYSTEM AND METHOD FOR POPULATING A DEDICATED SYSTEM SERVICE REPOSITORY FOR AN INFORMATION HANDLING SYSTEM - An information handling system includes a processor, a memory device coupled to the processor, and a dedicated system service repository (DSSR) coupled to the processor. The DSSR is configured to store a base image that includes a plurality of partitions and a first system configuration image, wherein the first system configuration image is stored in a first partition of the plurality of partitions, wherein the first system configuration image is configured to provide in-band and/or out-of-band managed access to the DSSR when executed; and by accessing the first system configuration image, the DSSR is populated with a second system configuration image, wherein the second system configuration image is stored in a second partition of the plurality of partitions. | 10-21-2010 |
20110078293 | Systems and methods for extension of server management functions - Systems and methods that may be implemented to provide a plug-in architecture framework to allow extension of server management functionalities in a unified extension firmware interface (“UEFI”) environment using available remote access controller memory space. The disclosed systems and methods may be implemented to provide a hardware and software interface to allow use of a plug-in framework in the embedded system management that may be run under the BIOS firmware and the UEFI environment. The disclosed systems and methods may also be implemented to provide a server management architecture that may be modified and enhanced over time, and/or that may also be employed to extend availability of the server management framework to third parties, as well as to extend support to original equipment manufacturer (“OEM”) servers. | 03-31-2011 |
20110296404 | SYSTEMS AND METHODS FOR HOST-LEVEL DISTRIBUTED SCHEDULING IN A DISTRIBUTED ENVIRONMENT - A system for host-level distributed scheduling of a software installation in a distributed computer environment is disclosed. An information handling system includes an out-of-band processor operable to communicatively connect to a second information handling system via a network. The information handling system is configured to: retrieve an identifier indicative of a software installation consequent to a software installation request being invoked; download a software installation package via the network, where the software installation package includes a payload; store the payload in an image repository; schedule the software installation to occur based, at least in part, on the identifier and a timing parameter; store software installation information in a nonvolatile memory medium; and perform the software installation according to the scheduling. The scheduling and the performing of the software installation is without dependency on communicative connection to the network. | 12-01-2011 |
20120110262 | Systems and methods for remote raid configuration in an embedded environment - Remote RAID system configuration may be implemented in an embedded and out-of-band manner using an information handling system configured, for example, as a RAID server. The remote RAID configuration may be implement, for example, on a RAID server system in the condition as it is supplied directly out-of-the-box to a user without requiring downloading of any additional software or firmware, without requiring presence of a management framework and plug in, and/or in a manner that is operating system (OS)-independent or that requires no OS to be present on the server. The RAID server may then be remotely reconfigured one or more times thereafter | 05-03-2012 |
20130205063 | SYSTEMS AND METHODS FOR OUT-OF-BAND BACKUP AND RESTORE OF HARDWARE PROFILE INFORMATION - Systems and methods are provided that may be implemented for out-of-band backup and/or restore of information handling system components. Such out-of-band backup and restore operations may be performed, in one embodiment, to backup and/or restore hardware profile information such as firmware images and corresponding system configuration information. | 08-08-2013 |
Wenfeng Zhang, Plano, TX US
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20110189987 | METHOD FOR FEMTO-CELL IDENTIFICATION - Methods and systems for femto-cell identification are disclosed herein. In one embodiment, a femto-cell base station is adapted to transmit with each broadcast a value which maps one-to-one to a different portion of a femto-cell identification. After the mobile station reports each broadcasted value to the serving non-femto-cell, the target femto-cell identification can be determined by combining multiple reports. In this manner, a fairly large identification space can be provided without significant increases in implementation complexity. In some embodiments, the system does not introduce issues with backward compatibility since standard cell identification procedures are preserved. In some embodiments, knowledge of the maximum number of femto-cells within a non-femto-cell is not required, thereby preventing ambiguous hand-in targets. | 08-04-2011 |
20120120854 | METHOD AND SYSTEM FOR DYNAMIC ADJUSTMENT OF DOWNLINK/UPLINK ALLOCATION RATIO IN LTE/TDD SYSTEM - A method and system for dynamic adjustment of downlink/uplink resource allocation ratio in a long-term evolution (LTE) time division duplex (TDD) system is disclosed. The method includes replacing at least one uplink subframe in a subframe pattern with at least one of a mute subframe and a mute uplink pilot timeslot (UpPTS), within a geographical guard area that isolates at least two areas having different TDD allocation patterns. The method further includes scheduling an uplink transmission from at least one mobile terminal such that the at least one of the mute subframe and the mute UpPTS are unused. A simple solution or a TDD configuration index substitution solution, or any combination thereof, may be used to control the uplink transmission involving a mute subframe or a mute UpPTS. | 05-17-2012 |
20120188955 | METHODS AND SYSTEMS FOR TRANSMITTING SFBC SIGNALS WITH CSI-RS TRANSMISSION AND RELATED MUTING IN LTE-ADVANCE SYSTEMS - Systems and methods for transmitting a physical downlink shared channel (PDSCH) of spatial-frequency block coding (SFBC) format in a subframe that includes at least one of a channel state information reference signal (CSI-RS) and zero-power muting are disclosed. A processor unit is groups one or more resource elements (REs) available for at least one of CSI-RS and zero-power muting, and the subframe including the group of one or more REs is transmitted. All of the one or more REs in a group may be used for PDSCH rate matching together, or none of the one or more REs in the group may be used for PDSCH rate matching. All REs on one OFDM symbol may not be used for PDSCH rate matching if any two REs per SFBC pair on the OFDM symbol, are separated by at least N REs, where N is equal to 1 or 2. | 07-26-2012 |
20130088949 | METHODS AND SYSTEMS FOR CSI-RS RESOURCE ALLOCATION IN LTE-ADVANCE SYSTEMS - A method of allocating resource elements in an orthogonal frequency division multiplexed (OFDM) system for transmission of a channel state information reference signal (CSI-RS) is disclosed. The method includes converting one or more resource elements to a two-dimensional frequency-time domain; and partitioning the one or more converted resource elements to units of a physical resource block (PRB). One or more resource elements are patterned over at least a portion of the PRB for transmission of the CSI-RS. According to an embodiment, the CSI-RS resource elements with a same subcarrier index for a common cell are code division multiplexed (CDM), with a CDM dimension equal to a number of CSI-RS resource elements with the same subcarrier index for the common cell. | 04-11-2013 |
20130094411 | METHODS AND SYSTEMS FOR CSI-RS TRANSMISSION IN LTE-ADVANCE SYSTEMS - A method of allocating resource elements in an orthogonal frequency division multiplexing (OFDM) system for transmission of a channel state information reference signal (CSI-RS) is disclosed. The method includes converting resource elements to a two-dimensional frequency-time domain. The converted resource elements can then be partitioned to units of a physical resource block (PRB), which can be one subframe, for example. It can be determined whether a portion of a PRB is being used by another signal; and if the portion of the PRB is not being used, it can be allocated for transmission of the CSI-RS. The CSI-RS can be transmitted at resource element locations determined by the resource elements available to the CSI-RS in a regular or a frequency-division duplexing (FDD) downlink subframe, for example. The CSI-RS can be transmitted in a downlink subframe configured as a Multi-Media Broadcast over a Single Frequency Network (MBSFN) or a non-MBSFN subframe. | 04-18-2013 |
20130128860 | Methods and Systems for CSI-RS Resource Allocation in LTE-Advance Systems - A method of allocating resource elements in an orthogonal frequency division multiplexed (OFDM) system for transmission of a channel state information reference signal (CSI-RS) without overlapping with resource elements allocated to a port-5 user equipment-specific reference signal (URS) signal is disclosed. The method can include shifting in a frequency domain at least a portion of resource elements allocated to the CSI-RS in a normal-CP subframe. According to certain embodiments, the allocation of resource elements can be defined per an 8-port CSI-RS, or per a group of eight CSI-RS resource elements, within a single physical resource block (PRB) whose time-domain dimension is one subframe and whose frequency-domain dimension is 12 subcarriers. | 05-23-2013 |
20130188531 | METHODS AND APPARATUS FOR NETWORK ENERGY SAVINGS IN A WIRELESS COMMUNICATION SYSTEM - Disclosed herein are methods and apparatus for network energy savings in a wireless communication system, such as the 3GPP LTE system. Particularly, one such method reduces power consumption in a base station by selectively muting or disabling downlink transmissions of certain control signal symbols in one or more subframes or frames. The disclosed methods and apparatus can apply independently or in combination in both FDD and TDD systems. | 07-25-2013 |
20130208678 | METHODS AND SYSTEMS FOR CSI-RS RESOURCE ALLOCATION IN LTE-ADVANCE SYSTEMS - Systems and methods for the configuration of channel state information reference signals (CSI-RS) are disclosed. The systems and methods include providing user equipment with the locations of CSI-RS reuse information. Several encoding patterns and exemplary methodology for both the identification of the CSI-RS resource element locations are provided in exemplary embodiments. In addition, exemplary embodiments provide muting methods and systems for a physical downlink shared channel resource elements. | 08-15-2013 |
20130235819 | Sequence Initialization for Demodulation Reference Signal - A new sequence initialization for demodulation reference signal (DMRS) sequence design used in the LTE-A system is provided. In some implementations, the modulo-2 addition of n | 09-12-2013 |
20140050125 | METHOD FOR DYNAMIC CHANGE OF DOWNLINK/UPLINK ALLOCATION IN LTE-TDD SYSTEMS - A method of dynamically adjusting the downlink-uplink allocation in a TDD system, includes: transmitting a downlink-uplink allocation signal to at least one user device, wherein the allocation signals specifies a set of flexible subframes within a radio frame that can be flexibly configured as either downlink or uplink subframes; determining if a HARQ feedback signal falls within a flexible subframe; and re-assigning the HARQ feedback signal to be transmitted in a non-flexible subframe within the radio frame. | 02-20-2014 |
Wentian Zhang, Keller, TX US
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20090243721 | FEEDFORWARD AMPLIFIER CIRCUIT AND METHOD FOR CONTROLLING A FEEDFORWARD AMPLIFIER CIRCUIT - A feedforward amplifier circuit includes a controllable error signal subtraction module (CESSM). The CESSM has a module signal input, an error cancellation input, a module control input and a circuit output. The module signal input of the CESSM is coupled to a power amplifier via a coupler and delay circuit. The error cancellation input is coupled to a feedforward subtraction module via an error signal amplifier. The module control input is coupled to the output of a controller. In operation, the CESSM subtracts an error cancellation signal from the module signal input. Upon determining a malfunction of the power amplifier, the controller sends a signal to the module control input resulting in the CESSM isolating the module signal input from the circuit output and directly coupling the error cancellation to the circuit output. | 10-01-2009 |
Xiankuan Zhang, Houston, TX US
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20080300431 | PROCESS FOR PREPARING AN ALKYLENE GLYCOL - A catalytic process for preparing a monoalkylene glycol from a corresponding alkylene oxide utilizing an ion exchange resin and a reactor in which an upflow process is used is provided. In particular, the process includes reacting water and an alkylene oxide in at least one reactor under conditions to form an alkylene glycol, wherein the at least one reactor includes an ion exchange resin and the reactor is operating in an upflow direction. | 12-04-2008 |
20090099393 | SOLID CATALYST USEFUL FOR CONVERTING AN ALKYLENE OXIDE TO AN ALKYLENE GLYCOL - A solid (i.e., heterogeneous) catalyst useful for preparing an alkylene glycol from the corresponding alkylene oxide as well as a process for the catalytic hydration of an alkylene oxide to an alkylene glycol utilizing such a catalyst are provided. The catalyst of the present invention is based on an ion exchange resin including polystyrene crosslinked with from about 2 to about 10 weight (wt.) % divinyl benzene. The ion exchange resin further includes quaternary ammonium groups or quaternary phosphonium groups. The process includes reacting water and an alkylene oxide in at least one reactor under conditions to form an alkylene glycol, wherein the at least one reactor includes a catalyst based on an ion exchange resin that includes polystyrene crosslinked with from about 2 to about 10 weight (wt.) % divinyl benzene. | 04-16-2009 |
20120059208 | MODIFIED ZINC FERRITE CATALYST AND METHOD OF PREPARATION AND USE - A catalyst for oxidative dehydrogenation of organic compounds is provided by forming a solution of catalyst precursor components comprised of Fe | 03-08-2012 |
20130150466 | MIXED OXIDE BASED CATALYST FOR THE CONVERSION OF CARBON DIOXIDE TO SYNGAS AND METHOD OF PREPARATION AND USE - The invention relates to a catalyst and process for making syngas mixtures including hydrogen, carbon monoxide and carbon dioxide. The process comprises contacting a gaseous feed mixture containing carbon dioxide and hydrogen with the catalyst, where the catalyst comprises Mn oxide and an auxiliary metal oxide selected from the group consisting of La, Ca, K, W, Cu, Al and mixtures or combinations thereof. The process enables hydrogenation of carbon dioxide into carbon monoxide with high selectivity, and good catalyst stability over time and under variations in processing conditions. The process can be applied separately, but can also be integrated with other processes, both up-stream and/or down-stream including methane reforming or other synthesis processes for making products like alkanes, aldehydes, or alcohols. | 06-13-2013 |
20130225840 | PROCESS FOR PREPARING CARBONATE AND DIOL PRODUCTS - A method of forming a cyclic carbonate product is carried out by reacting an alkylene oxide, such as ethylene oxide, with carbon dioxide in the presence of a metal organic framework (MOF) catalyst with less than 0.5 mol % of any potassium or quaternary ammonium salts present based on moles of alkylene oxide feed in a reaction zone under reaction conditions to form a cyclic carbonate product. The cyclic carbonate product may be optionally fed as a crude carbonate product that does not undergo any purification or separation, other than the optional removal of any portion of unreacted alkylene oxide, carbon dioxide, and light hydrocarbon gases, to a second reaction zone containing a transesterification catalyst along with an aliphatic monohydric alcohol. The cyclic carbonate product and monohydric alcohol are allowed to react under reaction conditions to form the dialkyl carbonate and diol products. | 08-29-2013 |
20130225850 | PROCESS FOR PREPARING DIALKYL CARBONATE AND DIOL PRODUCTS - Dialkyl carbonate and diol products are prepared in an integrated process performed by reacting an alkylene oxide with carbon dioxide in the presence of a non-halide-containing homogeneous carbonation catalyst in a first reaction zone to form a crude cyclic carbonate product. The crude cyclic carbonate product is introduced along with an aliphatic monohydric alcohol to a second reaction zone containing a transesterification catalyst. The transesterification catalyst is comprised of a strongly basic Type I ion exchange resin in gel having a particular form. The cyclic carbonate product and monohydric alcohol are reacted to form the dialkyl carbonate and diol products. In another aspect, dialkyl carbonate and diol products are prepared in an integrated process wherein a halide-containing homogeneous carbonation catalyst is used to form a crude cyclic carbonate product that is then used in a transesterification reaction. The transesterification catalyst is regenerated to accommodate the effects of the halide-containing catalyst. | 08-29-2013 |
20130267727 | Process for Preparing Dialkyl Carbonate and Diol Products - Dialkyl carbonate and diol products are prepared in an integrated process performed by reacting an alkylene oxide with carbon dioxide in the presence of a non-halide-containing homogeneous carbonation catalyst in a first reaction zone to form a crude cyclic carbonate product. The crude cyclic carbonate product is introduced along with an aliphatic monohydric alcohol to a second reaction zone containing a transesterification catalyst. The transesterification catalyst is comprised of a strongly basic Type I ion exchange resin in gel having a particular form. The cyclic carbonate product and monohydric alcohol are reacted to form the dialkyl carbonate and diol products. In another aspect, dialkyl carbonate and diol products are prepared in an integrated process wherein a halide-containing homogeneous carbonation catalyst is used to form a crude cyclic carbonate product that is then used in a transesterification reaction. The transesterification catalyst is regenerated to accommodate the effects of the halide-containing catalyst. | 10-10-2013 |
20140221672 | Process for Preparing Carbonate and Diol Products - A method of forming a cyclic carbonate product is carried out by reacting an alkylene oxide, such as ethylene oxide, with carbon dioxide in the presence of a metal organic framework (MOF) catalyst with less than 0.5 mol % of any potassium or quaternary ammonium salts present based on moles of alkylene oxide feed in a reaction zone under reaction conditions to form a cyclic carbonate product. The cyclic carbonate product may be optionally fed as a crude carbonate product that does not undergo any purification or separation, other than the optional removal of any portion of unreacted alkylene oxide, carbon dioxide, and light hydrocarbon gases, to a second reaction zone containing a transesterification catalyst along with an aliphatic monohydric alcohol. The cyclic carbonate product and monohydric alcohol are allowed to react under reaction conditions to form the dialkyl carbonate and diol products. | 08-07-2014 |
Xiaojing Zhang, Austin, TX US
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20100039687 | Apparatus for Performing Confocal Endoscopy - A method for manufacturing a microscanner having a micro mirror is disclosed. Initially, a two-axis self-aligned vertical comb-drive microscanner is fabricated from a bonded silicon-on-insulator-silicon (SOI) silicon wafer. By depositing a thin film of aluminum on the surface, a SOI silicon wafer can provide about 90% reflectivity at 633 nm. A 2.5 μm misalignment tolerance can be achieved for the critical backside alignment step. As a result, confocal images with 1 μm resolution can be acquired using a microscanner having SOI silicon wafer mirrors. | 02-18-2010 |
20100220334 | FORWARD-IMAGING OPTICAL COHERENCE TOMOGRAPHY (OCT) SYSTEMS AND PROBES - Provided are forward-imaging optical coherence tomography (OCT) systems and probes. | 09-02-2010 |
20100330715 | Uniform Transfer of Luminescent Quantum Dots onto a Substrate - A method of uniformly transferring luminescent quantum dots onto a substrate, comprising: a) preparing a colloidal suspension of luminescent quantum dots in a hydrophobic solvent, wherein the density of the hydrophobic solvent is from 0.67 g/cm | 12-30-2010 |
20110062110 | Method for Fabricating a Micromirror with Self-Aligned Actuators - A method of fabricating a micromirror is disclosed. Initially, a set of coarse features is formed in a low-temperature oxide (LTO) layer deposited on a front side of a wafer. A set of fine features is then formed in a photosensitive material layer deposited on top of the LTO layer, and the fine features are constrained laterally within the coarse features. Next, a portion of the LTO layer is removed to align the width of the coarse features with the width of the fine features. The first silicon dioxide layer and the first and second silicon device layers are subsequently etched to form stator comb fingers and rotor comb fingers. Finally, a rotatable mirror is formed by removing a portion of the substrate on a back side of the wafer, and the silicon dioxide layers from the front and back sides of the wafer. | 03-17-2011 |
20110160744 | Optically-implemented microsurgery system and approach - According to an example embodiment of the present invention, a vibration-actuated microsurgical system includes an optical force detection arrangement having an optical encoding device configured to modulate an intensity of light in response to a displacement of a portion of the microsurgical system. Light sensing circuitry is configured to detect a force applied to the microsurgical system (e.g., and thereby to a sample) based on the intensity of light sensed from the optical encoding device. This detected force is used in controlling the application of the microsurgical system. | 06-30-2011 |
20110275947 | CARDIOVASCULAR POWER SOURCE FOR AUTOMATIC IMPLANTABLE CARDIOVERTER DEFIBRILLATORS - Aspects according to the present invention provide a method and implant suitable for implantation inside a human body that includes a power consuming means responsive to a physiological requirement of the human body, a power source and a power storage device. The power source comprises a piezoelectric assembly that is configured to generate an electrical current when flexed by the tissue of the body and communicate the generated current to the power storage device, which is electrically coupled to the power source and to the power consuming means. | 11-10-2011 |
20110303638 | Method for Fabricating a Micromirror - A method for fabricating a micromirror is disclosed. A set of coarse features is formed in a low-temperature oxide (LTO) layer deposited on a front side of a wafer. A set of fine features is then formed in a photosensitive material layer deposited on top of the LTO layer. After removing a portion of the LTO layer to align the width of the coarse features with the width of the fine features, the first silicon dioxide layer and the first and second silicon device layers are etched to form stator comb fingers and rotor comb fingers accordingly. Finally, a portion of the substrate on a back side of the wafer is removed, and the silicon dioxide layers are removed from the front and back sides of the wafer to form a rotatable mirror. | 12-15-2011 |
20120281265 | HANDHELD IMAGING PROBE - A handheld imaging probe for performing optical coherence tomography is disclosed. The handheld imaging probe includes a lens tube and a housing. The lens tube contains an objective lens and a polycarbonate sheet. The polycarbonate sheet provides a bio-safe contact with a tissue sample to be examined. The housing, which is connected to the lens tube, contains a micromirror for directing a laser beam to irradiate the tissue sample via the objective lens and the polycarbonate sheet. | 11-08-2012 |
20130075318 | Apparatus for Isolating Rare Cells from Blood Samples - An apparatus for isolating rare cells from a blood sample is disclosed. The apparatus includes a reservoir for supplying the blood sample and a pump for receiving the blood sample. The apparatus also includes a microchip and a set of magnets. The microchip has a microchannel formed between the microchip and a glass slide. The microchannel is connected between the reservoir and the pump to allow the blood sample to flow from the reservoir to the pump. The set of magnets is located adjacent to the glass slide to form a magnetic gradient along the glass slide on which rare cells can be isolated from the blood sample. | 03-28-2013 |
20130301095 | FREQUENCY TUNABLE MICROMIRROR - An optical imaging system having two micromirrors is disclosed. Each of the two micromirrors can be rotated by a first set of combdrive actuators along a first axis and a second set of combdrive actuators along a second axis. Each of the first and second set of combdrive actuators includes multiple stator comb fingers and multiple rotor comb fingers capable of rotating about a torsion bar. One of the micromirrors can be tuned by applying a current to the torsion bar to change the Young's modulus of the torsion bar via thermoelectrical heating of the torsion bar. | 11-14-2013 |
20140083970 | FORWARD-IMAGING OPTICAL COHERENCE TOMOGRAPHY (OCT) SYSTEMS AND PROBES - Provided are forward-imaging optical coherence tomography (OCT) systems and probes. | 03-27-2014 |
Xiaoli Zhang, League City, TX US
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20100111955 | HEDGEHOG SIGNALING PATHWAY PROTEINS AND USES THEREOF - The present invention discloses a component in the hedgehog signaling pathway that can be useful in the treatment and diagnosis of hedgehog signaling pathway associated disorders. In this regard, the present invention discloses that RanBPM regulated the stability of hedgehog signaling molecule, smoothened (SMO) and that inactivation of RanBPM by siRNA prevented growth and metastasis of cancer cells. | 05-06-2010 |
Xiaoliu Zhang, Houston, TX US
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20090215147 | Use of Mutant Herpes Simplex Virus-2 for Cancer Therapy - The present invention is directed to the composition and use of a modified Herpes Simplex Virus Type 2 (HSV-2) as a medicament in the treatment of cancer. The modified HSV-2 has fusogenic activity, and comprises a modified/mutated ICP10 polynucleotide encoding a polypeptide having ribonucleotide reductase activity and lacking protein kinase activity. | 08-27-2009 |
20120100109 | Method for increasing the replication of oncolytic HSVs in highly resistant tumor cells using mTOR pathway and PI3K inhibitors - The present invention is directed to the administration of an HSV derived oncolytic virus and a PI3K/AKT/mTOR pathway inhibitor to treat various types of resistant tumors. Therapy-resistant tumor formation is one of the main causes for treatment failure in the clinic. The treatment methods and compositions disclosed herein sensitize resistant tumors to the treatment of herpes simplex virus (HSV)-based oncolytic virotherapy. Pre or co-treatment of resistant tumor cells with the mTOR inhibitor, rapamycin, or certain PI3K inhibitors, such as LY294002, can efficiently sensitize the tumors to HSV derived oncolytic viruses, whereby the replication and spread of the viruses are dramatically enhanced. | 04-26-2012 |
20120237481 | Incorporation of the B18R gene to enhance antitumor effect of virotherapy - The present invention relates to a novel composition and method to potentiate the antitumor effect of an oncolytic virus by providing for resistance against a host's innate interferon response. Particularly, a B18R gene is incorporated into an oncolytic virus. During treatment of a host with the modified oncolytic virus, the oncolytic virus retains its phenotype, and the host's innate immune response has a minimal affect on viral replication. | 09-20-2012 |
20120301506 | Oncolytic Virus as an Inducer for Innate Antitumor Immunity - The present invention is directed to the administration of FusOn-H2, an HSV derived oncolytic virus, to treat tumor cells that are resistant to the lytic effect of the virus. Administration of FusOn-H2 induces the patient's innate immune responses to tumor cells via neutrophils, which are able to destroy tumors efficiently when they migrate to the tumor mass. With the induced innate antitumor immunity, FusOn-H2 is effective at eradicating tumors even when it is used at very low doses. | 11-29-2012 |
20140369977 | Targeting Tumor Neovasculature with Modified Chimeric Antigen Receptors - A T cell transduced with a chimeric antigen receptor can be administered to a host to kill cancer cells. The chimeric antigen receptor can include a targeting moiety with a strong binding affinity to α | 12-18-2014 |
Xiaoxiao Zhang, Forth Worth, TX US
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20080269882 | INTRAOCULAR LENS WITH ASYMMETRIC OPTICS - In one aspect, an intraocular lens (IOL) is discloses that includes an optic having a central portion and a peripheral extension that partially surrounds the central portion. Once implanted in a patient's eye, the IOL's optic forms an image of a field of view with the peripheral extension inhibiting dysphotopsia. While in some embodiments, the peripheral extension provides focusing of light incident thereon, in other embodiments, it can include at least one textured surface for scattering the light or at least one opaque surface for preventing the light from reaching the retina. In other embodiments, the peripheral extension can include one or more translucent surface(s) for diffusing the light passing therethrough to inhibit dysphotopsia. | 10-30-2008 |
20090125106 | Accommodative Intraocular Lens System - A two optic accommodative lens system wherein at least one of the optics is deformable. When compressed by the capsular bag, the two optics press against each other, deforming at least one of the optics. As a result, the interface where the two optics meet changes shape, thereby altering the refractive power of the lens system. | 05-14-2009 |
20120262670 | CORRECTION OF HIGHER ORDER ABERRATIONS IN INTRAOCULAR LENSES - In one aspect, the present invention provides a method of designing an intraocular lens (IOL) to address variations of at least one ocular parameter in a population of patient eyes. The method can include establishing at least one eye model in which the ocular parameter can be varied over a range exhibited by the population. The eye model can be employed to evaluate a plurality of IOL designs in correcting visual acuity for eyes in the patient population. An IOL design that provides a best fit for visual performance over at least a portion of the parameter range can then be selected. | 10-18-2012 |
Xiaoyan Zhang, Austin, TX US
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20080244094 | Method and Apparatus for Time Synchronization in a Network Data Processing System - A method, apparatus, and computer implemented instructions for synchronizing time in a network data processing system. A request for time synchronization is received at a target data processing system. A current target time at the target data processing system is placed in a reply. The reply is sent to the source data processing system. A current source time from when the reply is received at the source data processing system is compared to the current target time to generate a comparison. A synchronization factor is generated using the comparison. | 10-02-2008 |
Xiaoyang Zhang, Richardson, TX US
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20090257255 | ACTIVE SNUBBER FOR TRANSITION MODE POWER CONVERTER - A transition mode power converter having an active snubber the operation of which is controlled using an auxiliary winding on the transformer of the power converter. In one embodiment, the power converter includes a transformer having a primary winding connected to a voltage source, a primary switch, an auxiliary switch, a capacitor, and an auxiliary winding on the transformer. The primary switch includes a first terminal connected to the primary winding of the transformer and a second terminal connected to a common node. The auxiliary switch includes a first terminal connected to the voltage source and to the primary winding. The capacitor is connected between a second terminal of the auxiliary switch and the first terminal of the primary switch. The auxiliary winding of the transformer is connected to a third terminal of the auxiliary switch and controls operation of the auxiliary switch via the third terminal. | 10-15-2009 |
20100080026 | POWER FACTOR CORRECTION CIRCUIT - A power converter that is operable to convert AC power into DC power that may be delivered to a load. The power converter operates to bypass a power factor correction (PFC) circuit during a portion of each AC power cycle. The power converter bypasses the PFC circuit when an AC input voltage is greater than a DC output voltage. The power converter may also include sensing circuitry to sense the AC input voltage and the DC output voltage of the power converter. The power converter may include one or more diodes that function to deliver power directly to a load when the AC input voltage is greater than the DC output voltage, thereby bypassing the PFC circuit. The DC output voltage of the power converter may be regulated to a level that is less than the peak AC input voltage. | 04-01-2010 |
20110038179 | Power Converter Including a Charge Pump Employable in a Power Adapter - A power converter including a charge pump employable in a power adapter. In one embodiment, the charge pump includes a voltage divider with a first diode having a terminal coupled to a terminal of a first capacitor and a second diode having a terminal coupled to a terminal of a second capacitor and another terminal coupled to another terminal of the first capacitor. The charge pump also includes a third diode coupled across the second diode and the second capacitor, and a charge pump power switch coupled across the first capacitor and the second diode. | 02-17-2011 |
Xinyuan Zhang, Houston, TX US
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20110072720 | GASIFICATION COOLING SYSTEM HAVING SEAL - A system, in certain embodiments, includes a gasification cooling system having an annular seal with a bellows. For example, the gasification cooling system may include a housing with an inlet, an outlet, and an interior between the inlet and the outlet, wherein the interior has a throat adjacent the inlet, and the throat expands in a flow direction from the inlet toward the outlet. The annular seal may be disposed in the throat of the housing, wherein the annular seal includes the bellows. | 03-31-2011 |
20120171054 | SYSTEM FOR FLUIDIZING SOLID FEEDSTOCK FROM A SOLID FEED PUMP - According to various embodiments, a system includes a fluidization elbow. The fluidization elbow includes an elbow inlet, an elbow outlet downstream from the elbow inlet, and an elbow body disposed between the elbow inlet and the elbow outlet, wherein the elbow body turns and converges from the elbow inlet toward the elbow outlet. The fluidization elbow also includes multiple gas nozzles coupled to the elbow body, wherein the multiple gas nozzles include injection axes that generally converge toward the elbow outlet. | 07-05-2012 |
Xioaxioa Zhang, Fort Worth, TX US
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20110098811 | Phase-shifted center-distance diffractive design for ocular implant - A diffractive multifocal design for ocular implant is provided. This ocular implant includes a diffractive multifocal intraocular lens (IOL) and a number of haptics. The diffractive multifocal IOL passes optical energy to distance, intermediate and near foci. The haptics mechanically couple to the diffractive multifocal IOL in order to position and secure the diffractive multifocal IOL within the eye. The diffractive multifocal IOL may include both a diffractive region and a refractive region, the diffractive multifocal IOL operable to phase shift optical energy such that constructive interference occurs within the diffractive region and the refractive region. | 04-28-2011 |
20110153014 | Intraocular devices and associated methods - Visual aids and associated methods for improving the eye sight of low vision patients are provided. Generally, the devices of the present disclosure address the needs of age-related macular degeneration (AMD) and other low vision patients by providing a magnified retinal image while keeping a large visual field of view. Further, the devices of the present disclosure allow direction of the magnified retinal image away from damaged portions of the retina and towards healthy, or at least healthier, portions of the retina. The devices of the present disclosure are also configured for implantation within the eye using minimally invasive surgical procedures. Methods of utilizing the devices of the present disclosure, including surgical procedures, are also provided. | 06-23-2011 |
Yaming Zhang, Plano, TX US
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20090180521 | DETECTION OF INTERFERERS USING DIVERGENCE OF SIGNAL QUALITY ESTIMATES - A method, system, and computer-readable medium for detecting an interferer in a wireless communication system are provided. The method includes receiving a signal having P tones, each of the P tones being associated with a frequency, determining a first signal quality of each of the P tones, determining a second signal quality of each of the P tones, and detecting the interferer that occupies the same frequency as one of the P tones based on the respective first signal quality and the respective second signal quality. The first signal quality and second signal quality behave differently when the interferer is present. The detecting the interferer includes determining a discrepancy in the behavior of the first signal quality and the second signal quality. | 07-16-2009 |
20120106686 | DIGITAL I/Q IMBALANCE COMPENSATION IN A QUADRATURE RECEIVER - An apparatus and method reduce distortion in a processed signal. The apparatus includes a first receive path, a second receive path, a summation unit, and a compensation unit. The first receive path is configured to process a received analog signal into a first digital signal. The second receive path is configured to process the received analog signal with a phase shift into a second digital signal. The summation unit is configured to sum the first and second digital signals to form a processed digital signal. The compensation unit is configured to identify a conjugate of the processed digital signal, apply a weighting factor to the conjugate of the processed digital signal to form a weighted signal, and subtract the weighted signal from the processed digital signal to reduce the distortion. | 05-03-2012 |
20140327594 | APPARATUS AND METHOD FOR MATCHING IMPEDANCE - An apparatus for matching impedance for use in a wireless communication is provided. The apparatus includes a forward path carrying a transmission signal to an antenna. The apparatus further comprises a quadrature feedback path configured to extract and feed back in-phase and quadrature phase components from each of a forward signal being transmitted toward the antenna and a reverse signal reflected from the antenna. A tunable matching network (TMN) is coupled to the forward path, having a plurality of tunable elements for matching an internal impedance to an impedance of the antenna. A controller is configured to calculate TMN input impedance's amplitude and phase based on the in-phase and quadrature phase components from each of the forward signal and the reverse signal. | 11-06-2014 |
20140328433 | APPARATUS AND METHOD FOR ENVELOPING TRACKING CALIBRATION - An apparatus for envelope tracking calibration for use in a wireless communication is provided. The apparatus includes a transmission signal path configured to carry a transmission signal to an antenna. An envelope signal path configured to feed an envelope signal with an envelope tracking power amplifier. A controller is configured to transmit a normal envelope signal being generated in a normal operation mode and measure a first Adjacent Channel Leakage Ratio (ACLR) corresponding to the normal envelope signal. The controller is further configured to transmit a comparison envelope signal being generated in a comparison operation mode and measure a second ACLR corresponding to the comparison envelope signal. The controller is configured to calculate a time misalignment between the transmission signal path and the envelope signal path based on a difference between the first and second ACLRs. | 11-06-2014 |
Yangiu Zhang, Houston, TX US
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20110146797 | FLEXIBLE PIPE SUPPORT - A method and apparatus are disclosed for supporting a flexible pipe. The method includes the steps of responsive to a change in at least one condition experienced by a flexible pipe, varying an amount of support provided at least one location on the flexible pipe. | 06-23-2011 |
Yanjin Zhang, San Antonio, TX US
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20080286276 | Proteins encoded by polynucleic acids of porcine reproductive and respiratory syndrome virus (PRRSV) - The present invention provides a purified preparation containing, for example, at least one polypeptide selected from the group consisting of proteins encoded by one or more open reading frames (ORF's) of an Iowa strain of porcine reproductive and respiratory syndrome virus (PRRSV), antigenic regions of such proteins which are at least 5 amino acids in length and which effectively protect a porcine host against a subsequent challenge with a PRRSV isolate, and combinations thereof in which amino acids non-essential for antigenicity may be conservatively substituted. The present invention also concerns a vaccine comprising an effective amount of such a protein; antibodies which specifically bind to such a protein; methods of producing the same; and methods of protecting a pig against a PRRSV, treating a pig infected by a PRRSV, and detecting PRRSV in a pig. | 11-20-2008 |
Yanqiu Zhang, Houston, TX US
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20090279957 | RISER ASSEMBLY - A riser assembly and method for providing buoyancy to a riser assembly are disclosed. The riser assembly which is of the type for transporting fluids from a sub-sea flowline to a floating structure comprises a first segment of flexible pipe, a further segment of flexible pipe and a rigid buoyancy support for providing at least one buoyancy element at the support. | 11-12-2009 |
20130216317 | RISER SUPPORT - Apparatus and method for supporting a riser are disclosed. The apparatus includes an anchoring element ( | 08-22-2013 |
20130292129 | SOLID OXIDE FUEL CELL SYSTEM - A riser assembly ( | 11-07-2013 |
20140186124 | RISER ASSEMBLY AND METHOD - A riser assembly and method of producing a riser assembly are disclosed. The riser assembly includes a riser having a plurality of buoyancy elements provided at predetermined intervals along the length of the riser for supporting the riser, and at least one further buoyancy element arranged to support the riser in a configuration for accommodating tension changes in the riser due to vessel movement. | 07-03-2014 |
20140262316 | RISER ASSEMBLY AND METHOD OF PROVIDING RISER ASSEMBLY - A riser assembly and method of producing a riser assembly for transporting fluids from a sub-sea location is disclosed. The assembly includes a riser comprising at least one segment of flexible pipe, the riser having a first end for connection to a floating facility and a further end;at least one buoyancy element for enabling a portion of the riser to form a hog bend configuration and an adjacent portion of the riser to form a sag bend configuration; and a weight element provided between the first end of the riser and the at least one buoyancy element, such that in an initial deployment position, the weight element is provided at least partially in the sag bend portion of the riser. | 09-18-2014 |
20140356073 | PIPE COMPONENTS AND METHODS OF MANUFACTURE - A connector assembly, riser assembly and method of producing a connector assembly are disclosed. The connector assembly includes a body portion for locating over a flexible pipe and arranged to be connectable to or formed integrally with one or more buoyancy compensating element, and one or more protrusion extending from the body portion and arranged to reduce or interrupt vortex induced vibrations in water surrounding the flexible pipe in use. | 12-04-2014 |
20150060079 | RISER ASSEMBLY AND METHOD - A riser assembly and method of supporting a flexible pipe are disclosed. The assembly includes a riser; at least one buoyancy compensating element attached to the riser for providing positive, negative or neutral buoyancy to the riser; and a tethering element connecting a first point of the riser with a further point of the riser so as to form a hog bend or a sag bend in the riser. | 03-05-2015 |
Yaohui Zhang, Katy, TX US
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20090017929 | Laser beam method and system for golfer alignment - An improved static alignment and an improved dynamic alignment are combined in a laser beam method and system that provides instantaneous and continuous information feedback to a golfer to allow the real time correction of defects arising from a golfer's stance, head movement, body movement, golf club alignment, and golf club swing. | 01-15-2009 |
Zhaozhou Zhang, San Antonio, TX US
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20100286312 | Amine Sacrificial Agents and Methods and Products Using Same - A method of producing cementitious mixtures containing fly ash as one of the cementitious components, under air entrainment conditions is described. The method involves forming a mixture comprising water, cement, fly ash, optionally other cementitious materials, aggregate, conventional chemical admixtures, and an air entrainment agent and agitating the mixture to entrain air therein. Additionally, at least one amine sacrificial agent is included in the mixture. The cementitious mixtures and hardened concretes resulting from the method and fly ash treated with sacrificial agent, or air entrainment agent/sacrificial agent combinations, are also described. | 11-11-2010 |
20120085264 | AMINE SACRIFICIAL AGENTS AND METHODS AND PRODUCTS USING SAME - A method of producing cementitious mixtures containing fly ash as one of the cementitious components, under air entrainment conditions is described. The method involves forming a mixture comprising water, cement, fly ash, optionally other cementitious materials, aggregate, conventional chemical admixtures, and an air entrainment agent and agitating the mixture to entrain air therein. Additionally, at least one amine sacrificial agent is included in the mixture. The cementitious mixtures and hardened concretes resulting from the method and fly ash treated with sacrificial agent, or air entrainment agent/sacrificial agent combinations, are also described. | 04-12-2012 |
20130206040 | AMINE SACRIFICIAL AGENTS AND METHODS AND PRODUCTS USING SAME - A method of producing cementitious mixtures containing fly ash as one of the cementitious components, under air entrainment conditions is described. The method involves forming a mixture comprising water, cement, fly ash, optionally other cementitious materials, aggregate, conventional chemical admixtures, and an air entrainment agent and agitating the mixture to entrain air therein. Additionally, at least one amine sacrificial agent is included in the mixture. The cementitious mixtures and hardened concretes resulting from the method and fly ash treated with sacrificial agent, or air entrainment agent/sacrificial agent combinations, are also described. | 08-15-2013 |
Zhehua Zhang, The Woodlands, TX US
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20110023663 | MANUFACTURING METHODS FOR HIGH SHEAR ROLLER CONE BITS - A method of manufacturing a roller cone drill bit may include forming a body of a single piece having an upper end and a lower end; machining at the lower end of the body at least two journals extending downward and radially outward from a central axis of the body; machining at least one of a ball passage, a hydraulic fluid passageway, a grease reservoir, and a lubricant passageway; and mounting roller cones on the at least two journals. | 02-03-2011 |
20110024197 | HIGH SHEAR ROLLER CONE DRILL BITS - A drill bit may include a bit body, comprising: at its upper end, a connection adapted to connect to a drill string; at its lower end, a plurality of journals extending downwardly and radially outward from a longitudinal axis of the bit; a plurality of roller cones rotatable mounted on the plurality of journals; and at least three rows of cutting elements disposed on each of the plurality of roller cones, wherein an outermost row has an extension height to diameter ratio greater than a mid row, and the mid has an extension height to diameter ratio greater than an innermost row. | 02-03-2011 |
20110162893 | HIGH-SHEAR ROLLER CONE AND PDC HYBRID BIT - A drill bit having a bit body, at least one blade extending radially from the bit body, a plurality of blade cutting elements disposed on each blade, at least one journal extending downwardly and radially outward from a longitudinal axis of the drill bit, a roller cone or roller disc mounted rotatably to each journal, and a plurality of cutting elements disposed on each roller cone or roller disc, and methods for making the drill bit are disclosed. | 07-07-2011 |
20140110181 | METHODS FOR DESIGNING FIXED CUTTER BITS AND BITS MADE USING SUCH METHODS - Embodiments disclosed herein relate to a method for analyzing a fixed cutter drill bit, said method including selecting a cutter; selecting an earth formation; simulating drilling performance of the fixed cutter bit having at least once cutter thereon; performing finite element analysis using outputs from the simulating; and outputting stress on the at least one cutter. | 04-24-2014 |
20140196956 | HIGH SHEAR ROLLER CONE DRILL BITS - A drill bit may include a bit body, comprising: at its upper end, a connection adapted to connect to a drill string; at its lower end, a plurality of journals extending downwardly and radially outward from a longitudinal axis of the bit; a plurality of roller cones rotatable mounted on the plurality of journals; and at least three rows of cutting elements disposed on each of the plurality of roller cones, wherein an outermost row has an extension height to diameter ratio greater than a mid row, and the mid has an extension height to diameter ratio greater than an innermost row. | 07-17-2014 |
20140353046 | HYBRID BIT WITH ROLLER CONES NEAR THE BIT AXIS - A drill bit includes a bit body having a longitudinal axis extending there through, a plurality of journals extending downward and radially outward from the bit body, each journal having a journal axis extending from a base of the journal through the length of the journal, wherein the journal axis at the base is at a first radial distance from the longitudinal axis, a roller cone rotatably mounted to each of the journals, and at least one blade protruding from the bit body and extending axially and radially along the bit body from a first end to a second end, wherein the first end is at a second radial distance from the longitudinal axis greater than the first radial distance, and wherein the second end is at a gage region of the drill bit. | 12-04-2014 |
Zhiwen Zhang, Austin, TX US
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20100009425 | Glycoprotein synthesis - Methods for making glycoproteins, both in vitro and in vivo, are provided. One method involves incorporating an unnatural amino acid into a protein and attaching one or more saccharide moieties to the unnatural amino acid. Another method involves incorporating an unnatural amino acid that includes a saccharide moiety into a protein. Proteins made by both methods can be further modified with additional sugars. | 01-14-2010 |