Portland State University Patent applications |
Patent application number | Title | Published |
20160123865 | HYDROGEL COMPOSITIONS AND METHODS FOR ELECTROCHEMICAL SENSING - Embodiments of hydrogels for electrochemical sensing, electrodes comprising the hydrogels, and methods of making and using the hydrogels are disclosed. The disclosed hydrogel electrodes comprise a cross-linked poly(acrylic acid-co-2-acrylamido-2-methyl-1-propanesulfonic acid (poly(AA-AMPS)) hydrogel and an electrical contact. | 05-05-2016 |
20160077103 | FLUORESCENCE DETECTION OF CYSTEINE AND HOMOCYSTEINE - Embodiments of probes for selectively detecting compounds having a thiol group and an amino group, e.g., cysteine and/or homocysteine, are disclosed, along with methods and kits for detecting the compounds in neutral media with the probes. The probes have a structure according to the general formula | 03-17-2016 |
20150359871 | IMMUNOGENIC COMPOSITIONS COMPRISING SILICIFIED VIRUS AND METHODS OF USE - It is disclosed herein that viruses coated in silica retain infectivity and the capacity to induce an immune response in an infected host. In addition, silicified virus is remarkably resistant to desiccation. Provided herein are methods of inducing a virus-specific immune response in a subject by administering to the subject an effective amount of silicified virus or silicified virus particles. Methods of enhancing a virus-specific cell-mediated immune response (such as a T cell-mediated immune response) in a subject by administering to the subject a silicified virus or silicified virus particles are also described herein. Further provided are immunogenic compositions comprising silicified virus or silicified virus particles, such as compositions useful as vaccines. The immunogenic compositions include a pharmaceutically acceptable carrier and/or an adjuvant. | 12-17-2015 |
20150349950 | CONSTRUCTION AND USES OF VARIABLE-INPUT-LENGTH TWEAKABLE CIPHERS - Innovations in the construction and use of variable-input-length tweakable ciphers (“VILTCs”). In some cases, a VILTC uses an initialization vector that is protected from exposure outside an encryption/decryption system in order to provide enhanced security with efficient performance. For example, a system for encryption and/or decryption includes two fixed-input-length tweakable block ciphers (“FIL TBCs”) and a VILTC. The first FIL TBC is adapted to produce a fixed-length initialization vector. The VILTC is adapted to produce a variable-length output string using the fixed-length initialization vector as a tweak. The second FIL TBC is adapted to produce a fixed-length output string. In this way, the first FIL TBC and the second FIL TBC protect the fixed-length initialization vector from exposure outside the system. In other cases, a VILTC is used for a reliable and efficient implementation of authenticated encryption/decryption with associated data. | 12-03-2015 |
20120187041 | INSECT-BASED REMOVAL OF ORGANIC SOLUTES FROM LIQUID - Disclosed herein are methods of removing organic solutes from liquids. The methods include incubating fly larvae with a liquid that contains organic solutes. Also disclosed herein are methods of producing larva biomass. Additionally, apparatus for use with the disclosed methods are described. | 07-26-2012 |
20110251210 | MODIFIED CHLOROQUINES WITH SINGLE RING MOIETY OR FUSED RING MOIETY - The disclosure provides modified chloroquine compounds having single ring or fused ring moieties. Also provided are pharmaceutical compositions comprising such compounds, methods of using such compounds to inhibit or treat diseases or conditions caused by chloroquine-resistant (CQ | 10-13-2011 |
20110213277 | SYSTEM, METHOD, AND APPARATUS FOR OBJECTIVE ASSESSMENT OF MOTOR SIGNS AT THE EXTREMITIES - Disclosed embodiments include a system for objective assessment of motor signs at the extremities that comprises (a) a device for objective motor sign measurement, (b) a test protocol defining a prescribed repetitive activity, and (c) a signal processing and analysis system to generate one or more impairment metrics. According to a particular embodiment, the device for objective motor sign measurement is characterized by including means for producing a continuous measure of position of a limb or extremity during said prescribed repetitive activity during the entire movement. | 09-01-2011 |
20100232504 | Supporting region-of-interest cropping through constrained compression - Region-of-interest cropping of high-resolution video is supported video compression and extraction methods. The compression method divides each frame into virtual tiles, each containing a rectangular array of macroblocks. Intra-frame compression uses constrained motion estimation to ensure that no macroblock references data beyond the edge of a tile. Extra slice headers are included on the left side of every macroblock row in the tiles to permit access to macroblocks on the left edge of each tile during extraction. The compression method may also include breaking skipped macroblock runs into multiple smaller skipped macroblock runs. The extraction method removes slices from virtual tiles that intersect the region-of-interest to produce cropped frames. The cropped digital video stream and the compressed digital video stream have the same video sequence header information. | 09-16-2010 |
20100223697 | Systems for assessing and enhancing the performance of scanning probe microscopes by quantifying and enforcing symmetries and periodicities in two dimensions - Scanning probe microscope (SPM) images are enhanced by enforcing one or more symmetries that can be selected based on suitable Fourier coefficient amplitude or phase angle residuals, and/or geometric Akaike information criteria, and/or cross correlation techniques. Alternatively, this selection can be based on prior knowledge of specimen characteristics. In addition, a scanning microscope point spread function is obtained based on the evaluation of a calibration image by enforcing at least one symmetry and can be applied to other image acquisitions. | 09-02-2010 |