Patent application number | Description | Published |
20080241877 | Immobilised Enzymes - The present invention relates to a method for immobilizing enzymes in a solid porous support, and to enzymes immobilized in solid porous supports. Specifically, the present invention uses a fluid containing the enzyme under high pressure (such as 25 to 50 Mpa) to immobilize the enzyme (such as CALB) on the porous support (such as silica). The resulting porous support contain more immobilized enzyme than would otherwise have been obtained by a process carried out at atmospheric pressures. | 10-02-2008 |
20080246006 | Cdte/Gsh Core-Shell Quantum Dots - Quantum dots, each having a core comprising CdTe and a shell comprising GSH covering the core, are provided. The Quantum dots can be formed in a solution comprising a telluride (Te) precursor and a cadmium (Cd) precursor for forming the cores, and glutathione (GSH) for forming shells covering the cores. The cores can comprise CdTe nanocrystals grown in the solution. The growth of the nanocrystals can be limited. The quantum dots can have high fluorescence emission quantum yield such as up to about 45%, and small sizes such as from about 3.8 nm to about 6 nm. | 10-09-2008 |
20080287288 | Mesoporous Nanoparticles - The present invention provides a process for making mesoporous nanoparticles. The process comprises providing an acidic mixture comprising a fluorocarbon surfactant, a second surfactant and a silica precursor. The silica precursor is then reacted to form the mesoporous nanoparticles. | 11-20-2008 |
20090012625 | Porous biomaterial-filler composite and method for making the same - A porous biomaterial-filler composite comprising a biomaterial, such as collagen, interspersed with a calcium phosphate-type filler material. The porosity of the composite is similar to that of natural bone and can feature a pore size ranging from a few nanometres to greater than 100 microns. Scaffolds prepared from the biomaterial-filler composite are suitable for resorbable bone substitute materials. | 01-08-2009 |
20090035855 | THREE-DIMENSIONAL RECONSTITUTED EXTRACELLULAR MATRICES AS SCAFFOLDS FOR TISSUE ENGINEERING - A biomaterial scaffold comprising: a) reconstituted extracellular matrix; and b) polyelectrolyte complex fibers; wherein the matrix and the fibers are functionally associated. | 02-05-2009 |
20090069825 | Scaffold and Method of Forming Scaffold by Entangling Fibres - A porous scaffold is provided, which comprises tangled fibres. A porous scaffold can be formed by applying a fluid to fibres to entangle them. The fibres comprise a polyelectrolyte complex and a cross-linker. The cross-linker links polyelectrolytes within individual fibres and inhibits secondary polyelectrolyte complication between adjacent fibres. | 03-12-2009 |
20090170692 | CATALYSTS FOR RING-CLOSING METATHESIS - A catalyst composition is provided, which may be used for ring closing metathesis. In the composition, a catalyst is immobilized on a siliceous mesocellular foam support. A suitable catalyst for use in the composition is a Grubbs-type catalyst or a Hoveyda-Grubbs-type catalyst. | 07-02-2009 |
20090186419 | Luminescent Metal Oxide Films - The present invention relates to articles and methods involving luminescent films which may be useful in various applications. Luminescent films of the present invention may comprise a layer of metal oxide nanoparticles and, in some cases, may interact with an analyte to generate a detectable signal, whereby the presence and/or amount of analyte can be determined. In some embodiments, fluorescence resonance energy transfer (FRET) may occur between the luminescent film and the analyte. Such articles and methods may be useful in, for example, biological assays or in sensors. | 07-23-2009 |
20090280327 | COATED COMPOSITES OF MAGNETIC MATERIAL AND QUANTUM DOTS - Composites and methods associated with the same are provided. The composite structures are formed of quantum dots and magnetic nanoparticles. The structures may be coated, for example, with a non-organic shell such as silica. In some cases, the shell may be functionalized or derivatized to include compounds, atoms, or materials that can alter or improve properties such as water solubility, water stability, photo-stability and biocompatibility. A reverse microemulsion process can be used to form the coated composites. The composition and other characteristics of the composites may be controlled to provide desired magnetic and optical properties. The structures may be used in a variety of applications including biological labeling, magnetic resonance imagine (MRI) and drug targeting, amongst others. | 11-12-2009 |
20090281358 | HETEROGENEOUS CHIRAL CATALYST - The invention provides a heterogeneous catalyst comprising a catalytic group coupled to a mesocellular siliceous foam support. The catalytic group is capable of catalysing a reaction selected from the group consisting of a Friedel-Craft reaction and a Diels-Alder reaction. | 11-12-2009 |
20090305412 | MECHANICALLY REVERSIBLE GEL - The present invention relates to a process for making a gel comprising combining a silanol species comprising at least two silanol groups per molecule and a hydrophilic hydroxyl species comprising at least two hydroxyl groups per molecule. The gel is capable of being converted to a liquid by application of a mechanical shear force and the liquid is capable of being converted to the gel in the absence of said mechanical shear force. | 12-10-2009 |
20100016621 | Hydrosilylation - The present invention relates to a process for converting a substrate to a product comprising exposing the substrate to a hydrosilane in the presence of a carbene catalyst. | 01-21-2010 |
20100048390 | MESOCELLULAR FOAM PARTICLES - The present invention provides a process for making regular shaped particles of solid foam. A first mixture, comprising water, an acid, a surfactant and a hydrophobic material, is combined with a hydrolysable silicon species to form a second mixture. The second mixture is maintained under conditions and for a sufficient time to form regular shaped precursor particles. The second mixture is then aged at a temperature and for a time effective to produce the regular shaped particles of solid foam. | 02-25-2010 |
20100048755 | POROUS POLYMERIC MATERIAL WITH CROSS-LINKABLE WETTING AGENT - A porous material is provided which comprises a transparent polymer matrix defining interconnected pores and a wetting agent. At least a portion of the wetting agent is cross-linked with the polymer matrix. A process for forming a porous polymeric material is also provided. A bicontinuous microemulsion comprising water, a wetting agent, a monomer, and a surfactant copolymerizable with the monomer is polymerized, to form a polymer defining interconnected pores. The wetting agent comprises a cross-linkable wetting agent such that after polymerization, at least a portion of the cross-linkable wetting agent is cross-linked with the polymer. The wetting agent may comprise acrylated hyaluronic acid (AHA) such as methacrylated hyaluronic acid (MeHA). The wetting agent may also comprise a hyaluronic acid (HA). The wetting agent may include an unbonded portion that this releasable from the material. A contact lens may be made from the porous material. | 02-25-2010 |
20100048815 | Electrically Conducting Polymers - The present invention provides a polymer for use in detecting or quantifying an analyte Exposure of the polymer to the analyte is capable of causing a shift in the onset potential for conductivity or semiconductivity of the polymer. A sensor for an analyte comprising the polymer is also described. | 02-25-2010 |
20100105544 | CATALYST IMMOBILIZATION ON SILICEOUS MESOCELLULAR FOAM VIA CLICK CHEMISTRY - The present invention relates to a method for preparing a heterogenised catalyst, comprising grafting a catalyst or catalyst precursor, via click chemistry, to a siliceous mesocellular foam (MCF). The invention also relates to a heterogenised catalyst comprising a catalyst species grafted onto a siliceous mesocellular foam (MCF) via a 1,2,3-triazole | 04-29-2010 |
20100111917 | CELL-ADHESIVE POLYELECTROLYTE MATERIAL FOR USE AS MEMBRANE AND COATING - A multilayer polyelectrolyte support material is provided that includes a polyelectrolyte layer and a polyelectrolyte-polyethylene glycol layer adjacent to the polyelectrolyte layer. The support material also includes a ligand conjugated to the polyelectrolyte-polyethylene glycol layer, allowing for attachment of a protein or a cell to the support material with controlled orientation. | 05-06-2010 |
20100113832 | PALLADIUM CATALYSTS - The invention relates to a particulate substance comprising a particulate porous support coupled to a palladium species. The palladium species may comprise palladium nanoclusters. The particulate substance may be used as a catalyst for conducting a carbon-carbon coupling reaction or a reduction. | 05-06-2010 |
20100116682 | ELECTROCHEMICAL SENSOR WITH INTERDIGITATED MICROELECTRODES AND CONDUCTED POLYMER - The present invention generally relates to electronic devices and methods. In some cases, the invention provides a sensor device comprising a pair of interdigitated microelectrodes ( | 05-13-2010 |
20100126880 | DNA COMPLEXING AGENTS - The invention provides a compound of structure (I): wherein X is S, O or NR | 05-27-2010 |
20100167057 | MAGNETIC NANOPARTICLES, MAGNETIC AND FLUORESCENT NANOCOMPOSITE, AND FORMATION OF MAGHEMITE BY OXIDIZING IRON STEARATE WITH METHYLMORPHOLINE N-OXIDE - Maghemite (γ-Fe | 07-01-2010 |
20100197920 | N-HETEROCYCLIC CARBENE METALLACYCLE CATALYSTS AND METHODS - The present invention generally relates to materials and methods for catalytic reactions, including transition metal-catalyzed cross-coupling reactions. The materials may be stable metal complexes that do not require special handling or processing conditions. In some cases, materials of the invention advantageously may be synthesize in one synthetic step without the need for isolation of intermediate compounds. Also, materials of the invention may be synthesized from inexpensive and readily available starting materials, under relatively mild reaction conditions that do not require the exclusion of air, water, and the like. In some embodiments, the material is a N-heterocyclic carbene metallacycle complex. Such materials and methods may be useful in the production of fine chemicals, advanced materials and specialty polymers. | 08-05-2010 |
20100210744 | Mesoporous Polymer Colloids - The invention provides a particulate material comprising porous polymeric microparticles having a mesoporous structure. A process for making the particles is also presented. The process comprises impregnating a porous microparticulate template material with a liquid comprising one or more monomers. The one or more monomers are then polymerised in and/or on the template material to form a polymer, and the template material is then removed to produce the particulate material. | 08-19-2010 |
20100248245 | INTEGRATED APPARATUS FOR CONDUCTING AND MONITORING CHEMICAL REACTIONS - Apparatus for conducting and monitoring chemical reactions comprises a base and a thermal cycler mounted on the base. A plurality of heat-conducting receptacles are mounted on the thermal cycler and in heat-communication therewith. Each receptacle comprises an opaque body defining a bore having an open end, a first window, and a second window. A cartridge is removably mounted on the receptacles. The cartridge comprises a plurality of light-transmitting reaction vessels, and conduits connected to the reaction vessels for processing and transferring fluid. The reaction vessels are received in the bores of the receptacles through the open ends of the bores. A light emitter is mounted on the base for illuminating the reaction vessels through the first windows of the reaction vessels. A light detector is mounted on the base for selectively receiving and detecting light emitted from the reaction vessels through the second windows of the receptacles. | 09-30-2010 |
20100272997 | DENSIFICATION OF METAL OXIDES - The present invention relates to methods for manufacturing of fully densified nanocrystalline metal oxide ceramic materials at low sintering temperature. Methods of the invention involve dry compaction of a product resulting from hydrothermal treatment of metal ion suspensions and subsequent sintering. The present invention may produce ceramic bodies that exhibit nanocrystalline structural features with measured densities that are found to be extremely similar to the theoretical density. | 10-28-2010 |
20100285573 | Apparatus for processing a sample in a liquid droplet and method of using the same - The invention provides an apparatus and a method of processing a biological and/or chemical sample in a liquid droplet. The apparatus comprises a processing compartment, which is defined by a reservoir and an immobilisation member. The processing compartment is further adapted to accommodate a medium, which is immiscible with the liquid droplet, and of a lower surface energy than the liquid of the liquid droplet. The reservoir is defined by a circumferential wall and a base. The immobilisation member is arranged within the reservoir and comprises a surface that is patterned in such a way that it comprises at least one predefined immobilisation area. The predefined immobilisation area within the patterned surface is of a higher surface energy than the medium. Furthermore the at least one predefined area is of a higher surface energy than the remaining surface and of a sufficient width in the plane of the surface to allow, in said hydrophobic medium, the immobilisation of the liquid droplet on the hydrophilic area via hydrophilic-hydrophilic or hydrophobic-hydrophobic interactions. The remaining surface is of at most about the same surface energy as the medium. In the method of the invention the medium is disposed into the apparatus, such that the predefined immobilisation area is entirely covered by the medium. The liquid droplet is disposed onto the predefined immobilisation area, whereby the liquid droplet is immobilised thereon via hydrophilic-hydrophilic or hydrophobic-hydrophobic interactions. A process is performed on the biological and/or chemical sample in said liquid droplet. | 11-11-2010 |
20100285585 | METHOD FOR EXTRACELLULAR MATRIX MEDIATED DIFFERENTIATION AND PROLIFERATION OF STEM CELLS - There is provided a method of culturing a stem cell on extracellular matrix extracted from support cells and in a stem cell culture medium comprising medium conditioned by the support cells | 11-11-2010 |
20100316797 | FORMING GLUTATHIONE-CAPPED AND METAL-DOPED ZINC SELENIDE/ZINC SULFIDE CORE-SHELL QUANTUM DOTS IN AQUEOUS SOLUTION - In a process of forming a capped crystal structure, a precursor solution is heated. The solution comprises a mixture of zinc (Zn) precursor, selenium (Se) precursor, precursor for a dopant, glutathione (GSH), and water. The dopant comprises a transition metal (M). The molar ratio of Zn:Se in the solution may be about 10:3 to about 10:5. The solution is heated for a first period sufficient to allow Zn(M)Se crystal core to form. After the first period of heating, more zinc precursor and GSH are added to the heated solution, and the solution is heated for a second period sufficient to form ZnS crystal shell on the Zn(M)Se crystal core. GSH is added in a sufficient amount to form a GSH layer around the Zn(M)Se/ZnS quantum dot. | 12-16-2010 |
20110006453 | HYDRODYNAMIC SPINNING OF POLYMER FIBER IN COAXIAL LAMINAR FLOWS - A polymer fiber is formed by hydrodynamic spinning. Fluids are forced to flow through a conduit to form a laminar flow comprising three or more layers of generally coaxial fluid flows, at respective flow rates selected to define a cross-section of a tubular middle layer of the fluid flows. The middle layer comprises a cross-linkable polymer precursor. Another layer of the fluid flows comprise a cross-linking agent. The polymer precursor, cross-linking agent and fluids are selected to prevent substantial diffusion of the polymer precursor away from the middle layer, and to allow a portion of the cross-linking agent to diffuse from the another layer into the middle layer to facilitate cross-linking of the polymer precursor in the middle layer to form a tubular polymer layer in a polymer fiber. The polymer layer thus has a cross-section generally corresponding to the cross-section of the middle layer. | 01-13-2011 |
20110014473 | POLYMER-COATED NANOPARTICLES - Polymers for coating nanoparticles (e.g., colloid nanoparticles and quantum dots) and methods associated therewith are provided. Such polymers may be derived from amino acids comprising suitable functional groups for associating the polymer to the nanoparticle. For example, in some embodiments, the polymer includes a polypeptide backbone (e.g., polyaspartic acid) with amino acid side groups (e.g., cysteine and/or methionine). Such a polymer can enable strong binding of the polymer to the nanoparticle surface via its multiple thiol groups, which can lead to excellent colloidal stability. Moreover, the carboxylic acid and amine functional groups of the polymer can facilitate attachment of binding partners (e.g., antibodies) to the polymer, which can allow the polymer-coated nanoparticle to be used in a variety of applications including protein detection and cell labeling. | 01-20-2011 |
20110015402 | RECIRCULATING REACTOR - The invention provides a recirculating reactor for converting a substrate to a product. The reactor comprises a reaction chamber and a recirculation system, said recirculation system comprising a separator. The reaction chamber contains a catalyst, and comprises a chamber body, a chamber inlet and a chamber outlet. The recirculation system is adapted for recirculating liquid from the chamber outlet to the chamber inlet, and the separator is used for separating a by-product from the liquid. | 01-20-2011 |
20110028513 | METHOD FOR TREATING NEUROLOGICAL DISORDERS WITH IMIDAZOLIUM AND IMIDAZOLINIUM COMPOUNDS - There is presently provided methods for delivering a neuroprotective agent to a neural cell. The methods comprise contacting a neural cell with an imidazolium or imidazolinium compound as described herein, including an imidazolium or imidazolinium salt. | 02-03-2011 |
20110030809 | FLUID PROCESSING AND TRANSFER USING INTER-CONNECTED MULTI-CHAMBER DEVICE - A micro-fluidic device comprises a body. The body defines pneumatic ports, chambers for receiving liquids, and a connecting conduit. Each port is sealed with a seal and is shaped to couple to a pneumatic conduit through the seal. At least some of the chambers each have a top opening and a bottom opening. The top openings are in fluid communication with corresponding ports. The bottom openings are in fluid communication with one another through the connecting conduit, which is above the bottom openings. Selective application of pneumatic pressures to the chambers through the pneumatic conduits can transfer a liquid from one chamber to another through the connecting conduit, for example, for processing bio-samples within the device. | 02-10-2011 |
20110044992 | METHOD OF DELIVERING AN ANTI-CANCER AGENT TO A CELL - There is provided a delivery vehicle comprising an anti-cancer agent together with a conjugate of a delivery agent containing a free aldehyde and a flavonoid, having the delivery agent conjugated at the C6 and/or the C8 position of the A ring of the flavonoid. The resulting delivery vehicles may be used to deliver an anti-cancer agent to a cell. | 02-24-2011 |
20110070280 | METHOD FOR DIFFERENTIATING EMBRYONIC STEM CELLS INTO CELLS EXPRESSING AQP-1 - The present invention relates to methods of differentiating a human embryonic stem (ES) cell into a cell, specifically a renal epithelial cell, expressing AQP-I. The methods disclosed comprise culturing human ES cells in a renal specific medium in the presence of an extracellular matrix molecule. The cells produced according to said method can be used to treat renal related disorders such as renal failure, nephrosis, Bright's disease and glomerulitis. | 03-24-2011 |
20110073811 | COATED WATER SOLUBLE NANOPARTICLES - Nanoparticles and methods of making nanoparticles are provided. The nanoparticles may include semiconductor nanocrystals. A shell may encapsulate a nanoparticle core, and the shell may include non-organic material and may be silica. The shell may also include additional species such as PEG. In some embodiments, a passivation layer is in contact with the core. | 03-31-2011 |
20110112310 | AZIRIDINE SYNTHESIS - The invention relates to a process for making an aziridine. wherein an aldehyde, a nitroso compound and a Michael acceptor are reacted in the presence of an N-heterocyclic carbene (NHC) catalyst. | 05-12-2011 |
20110124049 | INTEGRATED MICROFLUIDIC DEVICE FOR GENE SYNTHESIS - We report making an integrated micro-fluidic device for synthesizing double stranded DNA from short oligo-nucleotides. We demonstrate successful synthesis of a 760 bp gene segment from a pool of 39 oligonucleotides on a micro-fluidic device using both the one-step and two-step synthesis processes. We also describe purifying the double stranded DNA PCR product and filtering out sequence errors in the double stranded DNA product, all on the same device. | 05-26-2011 |
20110124755 | Polyisocyanurates - The invention relates to a polyisocyanurate comprising isocyanurate rings linked by linker groups coupled to the nitrogen atoms of said rings. The polyisocyanurate may be microporous or mesoporous or both microporous and mesoporous. | 05-26-2011 |
20110129924 | Porous Polymeric Articles - Porous polymeric articles, and more specifically, porous polymeric articles for tissue engineering and organ replacement, are described. In some embodiments, methods described herein include use of a polymer-solvent system (e.g., phase inversion) to generate porosity in a structure. The process may include formation of a structure precursor material including a first crosslinkable component and a second component that can be precipitated in a precipitation medium. The structure precursor material may be shaped into a three-dimensional shape by a suitable technique such as three-dimensional printing. Upon shaping of the structure precursor material, at least a portion of the first component may be crosslinked. The structure may then be contacted with a precipitation medium to remove the precursor solvent from the structure, which can cause the second polymer component to precipitate and form a porous structure containing a network of uniform pores. In some embodiments, the porous structure is constructed and arranged for use as a template for ultrafiltration, cell growth, and/or for forming complex, biomimetic, porous biohybrid organs, where living cells can be immobilized and perform their normal physiological functions. | 06-02-2011 |
20110136929 | TRAPPING GLUCOSE PROBE IN PORES OF POLYMER - A polymer matrix defining pores is formed by polymerizing polymer precursors in a precursor solution. The precursor solution comprises a bicontinuous microemulsion of a first fluid in a first continuous phase and a second fluid in a second continuous phase. The first fluid comprises the polymer precursors. The second fluid comprises the glucose probe. Some internal pores are connected to surface pores in the matrix through openings sized to allow passage of glucose molecules but restrict passage of the glucose probe. As the glucose probe is dispersed in the precursor solution prior to polymerization, some glucose probe molecules are trapped in the internal pores after polymerization. The formed polymer may be used in an ophthalmic device such as contact lens, for detecting the presence of glucose in an ocular fluid. | 06-09-2011 |
20110146449 | METHODS AND COMPOSITIONS COMPRISING POLYOXOMETALATES - The present invention generally relates to compositions and methods comprising polyoxometalates (POMs). In some cases, a reduced form of a POM may be formed via electrolysis in the presence of essentially no supporting electrolyte. The reduced POMs may be used for various applications, for example, for the formation of metallic nanoparticles. Some embodiments of the present invention provide compositions and methods comprising reduced forms of the polyoxometalate, [alpha-SiW | 06-23-2011 |
20110165689 | METHODS, COMPOSITIONS, AND ARTICLES COMPRISING STABILIZED GOLD NANOCLUSTERS - The invention relates generally to gold nanoclusters, and in particular, fluorescent gold nanoclusters. The gold nanoclusters may be stabilized, for example, with a protein or stabilizing agent. In some cases, the gold nanoclusters may be used in methods or articles to determine the presence, absence, and/or concentration of mercuric ions in a sample. | 07-07-2011 |
20110178040 | METHOD FOR TREATING FIBROSIS AND CANCER WITH IMIDAZOLIUM AND IMIDAZOLINIUM COMPOUNDS - There is presently provided methods for delivering an anti-fibrotic or anti-cancer agent to a cell. The methods comprise contacting a cell with an effective amount of imidazolium and imidazolinium compounds as described herein, including imidazolium and imidazolinium salts. | 07-21-2011 |
20110233427 | MAGNETITE-SILVER HETERODIMER NANOPARTICLES AND THEIR PREPARATION AND USE FOR TWO-PHOTON FLUORESCENCE - A heterodimer particle is provided which comprises a first component particle comprising magnetite and a second component particle comprising silver. The second component particle may have a structure and a particle size selected to generate two-photon fluorescence emission. The heterodimer particle may be irradiated with light of a wavelength selected to induce two-photon fluorescence emission, which is then detected. Tetramethylammonium hydroxide may be bonded to the surface of the first component and glutathione may be bonded to the surface of the second component. The heterodimer particle may be formed by preparing a magnetite particle and growing a silver particle on the magnetite particle, in the presence of 1,2-dodecanediol as a reducing agent. | 09-29-2011 |
20110236874 | METHOD FOR FORMATION OF RENAL TUBULES - There is provided a method of making a renal tubule. The method comprises seeding renal tubule cells onto a solid surface; culturing the renal tubule cells in a liquid growth medium to form a monolayer on the solid surface; and continuing culturing the renal tubule cells to form a tubule. | 09-29-2011 |
20110243851 | GLUCOSE-PEG CONJUGATES FOR REDUCING GLUCOSE TRANSPORT INTO A CELL - There is provided a glucose-PEG conjugate comprising a PEG moiety conjugated to a linear glucose moiety at the C1 position of the glucose moiety. The glucose-PEG conjugate may be used to reduce glucose transport into a cell and may be used to treat a proliferative disorder. | 10-06-2011 |
20110250649 | PCR-BASED METHOD OF SYNTHESIZING A NUCLEIC ACID MOLECULE - There is provided a method of synthesizing a nucleic acid molecule and in one aspect, the method comprises assembling a full length template nucleic acid molecule by PCR in a PCR reaction mixture comprising a set of assembly oligonucleotides having a first average melting temperature and a set of outer amplification primers having a second average melting temperature that is lower than the first average melting temperature, wherein said assembling comprises subjecting the PCR reaction mixture to a first annealing temperature that is higher than the second average melting temperature and; amplifying the full length template nucleic acid molecule by PCR in the PCR reaction mixture wherein said amplifying comprises subjecting the PCR reaction mixture to a second annealing temperature that permits annealing of the outer amplification primers to the full length template nucleic acid molecule. | 10-13-2011 |
20110268970 | MESOPOROUS NANOPARTICLES - The present invention provides a process for making mesoporous nanoparticles. The process comprises providing an acidic mixture comprising a fluorocarbon surfactant, a second surfactant and a silica precursor. The silica precursor is then reacted to form the mesoporous nanoparticles. | 11-03-2011 |
20110287259 | NANOCOMPOSITES - The invention describes a nanocomposite particle comprising a nanoparticle having a surface comprising a silver salt, and at least one region of metallic gold on said surface. The invention also provides a nanocomposite material comprising said particles and processes for making the nanocomposite material, either by allowing gold in nanoparticles having a silver salt on the surface thereof to at least partially diffuse through the silver salt so as to form at least one region of metallic gold on said surface, or else by depositing metallic gold on the surfaces of nanoparticles having the silver salt on the surface thereof. | 11-24-2011 |
20110311417 | Apparatus for Biopolymer Synthesis - The present invention relates to an apparatus for biopolymer synthesis wherein said apparatus comprises at least one support having a plurality of microwells and wherein said microwells comprise a porous substrate providing a surface area for biopolymer synthesis. | 12-22-2011 |
20120003689 | HYDROPHOBIC MAGNETIC PARTICLES - A process for making a particulate material comprising mesoporous particles having granules of a metal containing species in at least some of the pores thereof, said process comprising: allowing a compound of the metal to enter pores of hydrophobic mesoporous particles, said compound being thermally decomposable at a decomposition temperature to form a metal containing species and said particles being substantially thermally stable at said decomposition temperature; and heating the hydrophobic mesoporous particles having the compound in the pores thereof to the decomposition temperature so as to decompose the compound and to form the mesoporous particles having granules of the metal containing species in at least some of the pores thereof. | 01-05-2012 |
20120004430 | PRODUCTION OF HYDROXYMETHYLFURFURAL - The invention provides a process for making hydroxymethylfurfural comprising exposing a saccharide, e.g. glucose or fructose, to a metal complex of an N-heterocyclic carbene. | 01-05-2012 |
20120024770 | MICROFLUIDIC SEPARATION SYSTEM - A microfluidic separation system, which comprises a magnetic separator, which itself comprises a magnetic energy source; first and second magnetically conductive members leading from the magnetic energy source and having respective terminal ends that are separated by a gap over which a magnetic field is applied due to the magnetic energy source. The separation system further comprises a microfluidic chip for insertion into the gap, which comprises a body defining channels on respective faces of the body; and an exterior lining that seals the plurality of channels to allow separate test sample volumes to circulate in at least two of the channels. Upon insertion of the chip into the gap, a first test sample volume is confined to circulating closer to the terminal end of the first member and a second test sample volume is confined to circulating closer to the terminal end of the second member. | 02-02-2012 |
20120035288 | FORMING COPOLYMER FROM BICONTINUOUS MICROEMULSION COMPRISING MONOMERS OF DIFFERENT HYDROPHILICITY - A copolymer defines interconnected pores and comprises polymerized monomers. The monomers comprise a first monomer more hydrophilic than 2-hydroxyethyl methacrylate (HEMA), and a second monomer as hydrophilic as, or less hydrophilic than, HEMA. In a method of forming a polymer, a bicontinuous microemulsion comprising water, a surfactant, and a combination of monomers copolymerizable for forming a porous copolymer is provided. The combination of monomers comprises the first and second monomers. The monomers in the bicontinuous microemulsion are polymerized to form the porous copolymer. The first monomer may comprise N-vinylpyrrolidone (NVP) or methacrylic acid (MAA). The second monomer may comprise HEMA or methyl methacrylate (MMA). | 02-09-2012 |
20120098164 | TWO-PHOTON STEREOLITHOGRAPHY USING PHOTOCURABLE COMPOSITIONS - Two-photon stereolithography can be performed using a photocurable material comprising a poly(meth)acrylate having a (meth)acrylate functionality of at least 3 and a molecular weight (MW) of at least 650, a urethane(meth)acrylate having a (meth)acrylate functionality of 2 to 4 and a MW of 400 to 10,000, a di(meth)acrylate made from bisphenol A or bisphenol F; and a photoinitiator. A beam of light is focused to a focus region of the material to induce two-photon absorption in the focus region, and thus polymerization of the material in the focus region. The beam is scanned across said material according to a pre-selected pattern so that the beam is focused to different pre-selected regions, to induce polymerization of the material at the pre-selected regions. | 04-26-2012 |
20120107925 | DEVICES FOR SEPARATING CELLS AND METHODS OF USING THEM - The present invention refers to a device for separating cells of a defined size from a sample and to a system comprising such devices and further components. Such devices can comprise different components, such as inlet module, intermediate module, outlet module and microsieve. The present invention also refers to methods of operating such devices and uses thereof. | 05-03-2012 |
20120122159 | PCR-BASED METHOD OF SYNTHESIZING A NUCLEIC ACID MOLECULE - There is provided a method of synthesizing a nucleic acid molecule and in one aspect, the method comprises assembling a full length template nucleic acid molecule by PCR in a PCR reaction mixture comprising a set of assembly oligonucleotides having a first average melting temperature and a set of outer amplification primers having a second average melting temperature that is lower than the first average melting temperature, wherein said assembling comprises subjecting the PCR reaction mixture to a first annealing temperature that is higher than the second average melting temperature and; amplifying the full length template nucleic acid molecule by PCR in the PCR reaction mixture wherein said amplifying comprises subjecting the PCR reaction mixture to a second annealing temperature that permits annealing of the outer amplification primers to the full length template nucleic acid molecule. | 05-17-2012 |
20120128781 | FUNCTIONALIZATION OF NANOPARTICLES BY GLUCOSAMINE DERIVATIVES - The present invention relates to oligomeric or polymeric saccharide derivatives comprising glucosamine moieties, e.g. derivatives of oligomeric or polymeric glucosamines such as chitosan oligomers or polymers, in which one or more amine groups are substituted by anchoring groups that chemisorb to the surface of a nanoparticle or form an interdigitated bilayer with a surfactant layer surrounding the nanoparticle. The invention also relates to functionalized nanoparticles comprising such derivatives, a method for forming the functionalized particles and to uses thereof as molecular imaging agents, biosensing agents or drug delivery agents, or in the preparation of such agents. | 05-24-2012 |
20120135141 | POLYMERIZATION ON PARTICLE SURFACE WITH REVERSE MICELLE - A method of coating particles comprises providing a solution comprising reverse micelles. The reverse micelles define discrete aqueous regions in the solution. Hydrophobic nanoparticles are dispersed in the solution. Amphiphilic monomers are added to the solution to attach the amphiphilic monomers to individual ones of the nanoparticles and to dissolve the individual nanoparticles attached with amphiphilic monomers in the discrete aqueous regions. The monomers attached to the nanoparticles are polymerized to form a polymer layer on the individual nanoparticles within the discrete aqueous regions. The polymerization comprises adding a cross-linker to the solution to cross-link the monomers attached to the individual nanoparticles. The solution for coating individual nanoparticles may comprise a microemulsion comprising a continuous phase and a discrete aqueous region defined by reverse micelles; hydrophobic nanoparticles dispersed in the microemulsion; amphiphilic polymerizable monomers attachable to the hydrophobic nanoparticles; and a cross-linker for polymerizing the monomers. | 05-31-2012 |
20120136164 | NANOSTRUCTURED METALS - The invention relates to a nanoparticulate material comprising long ultrathin metal nanowires, and to processes for making it. The nanoparticulate material may be used as a catalyst and, in the presence of a chiral modifier, can catalyse enantioselective reactions. | 05-31-2012 |
20120184940 | BIOARTIFICIAL KIDNEYS - The present invention generally relates to improved bioartificial kidneys (BAKs), and in certain embodiments to improved bioartificial kidneys that are portable and/or wearable by a user. In some embodiments, the BAKs may comprise an ultrafiltration unit and a reabsorption unit. The reabsorption unit may contain a reabsorption membrane having a layer of renal proximal tubule cells disposed thereon, where the renal proximal tubule cells selectively allow solutes to pass through the reabsorption membrane. In some embodiments, at least the reabsorption unit may be configured as a substantially flat-plate filtration device, which can impart advantageous properties such as improved maintenance of the renal proximal tubule cell layer, more facile monitoring of the renal proximal tubule cell layer as well as enhanced profile for wearability. | 07-19-2012 |
20120196345 | DOUBLE COATING PROCEDURE FOR THE MEMBRANES OF BIOARTIFICIAL KIDNEYS - The present invention generally relates to modified substrates such as membranes for use in bioartificial organs, such as bioartificial kidneys, and other applications. Certain aspects are generally directed to a membrane or other substrate modified to facilitate the attachment of cells. In one set of embodiments, the substrate or membrane may be at least partially coated with an adhesive such as 3,4-dihydroxy-L-phenylalanine (DOPA), poly(dopamine), or other adhesive comprising a molecule having a catechol moiety, for example on one side of the membrane or substrate. On at least a portion of the adhesive coated portion of the substrate, a protein may be coated, such as an extracellular matrix protein (for example, a collagen), to which cells such as primary human renal proximal tubule cells may be adhered. Surprisingly, such a dual coating may be used to promote the attachment of such cells to a membrane or other substrate that otherwise may not promote cell adhesion. In certain embodiments, the coating may also facilitate or promote not only cell adhesion, but also cell proliferation and/or differentiation. Such membranes or other substrates may be useful, for example, in bioartificial organs such as bioartificial kidneys, hemodialysis cartridges, bioimplants, biosensors, bioreactors, etc. In certain embodiments, cells may be attached to a membrane or other substrate on only one side, while the other side may be kept free of attached cells. | 08-02-2012 |
20120202741 | DELIVERY OF BMP-7 AND METHODS OF USE THEREOF - The present invention generally relates to delivery of BMP-7 or functional variants or functional fragments thereof and/or a BMP-7 agonist and methods of use thereof. In some embodiments, methods and devices are provided for delivery of BMP-7 or functional variants or functional fragments thereof and/or a BMP-7 agonist to a patient. In some cases, the BMP-7 or functional variants or functional fragments thereof and/or a BMP-7 agonist may be released in controlled fashion from a device in fluid communication with a patient. In some embodiments, the BMP-7 or functional variants or functional fragments thereof and/or a BMP-7 agonist may be expressed by cells within a device. In other embodiments, methods are provided for improving the function of devices containing renal proximal tubule cells. For example, in some embodiments, exposure of renal proximal tubule cells to BMP-7 or functional variants or functional fragments thereof and/or a BMP-7 agonist may be used to inhibit disruption of cell layers comprising renal proximal tubule cells. In another embodiment, exposure of renal proximal tubule cells to BMP-7 or functional variants or functional fragments thereof and/or a BMP-7 agonist may be used to inhibit trans- and de-differentiation of renal proximal tubule cells. In another embodiment, exposure of renal proximal tubule cells to BMP-7 or functional variants or functional fragments thereof and/or a BMP-7 agonist may be used to improve renal proximal tubule cell functions. | 08-09-2012 |
20120228802 | DEVICE AND METHOD FOR FOCUSING A BEAM OF LIGHT WITH REDUCED FOCAL PLANE DISTORTION - A system for focusing a light beam may be used for multi-photon stereolithography. It comprises a collimator or expander for adjusting the beam divergence and a scanner for directing the beam onto a focusing device to focus the beam to a focal point or beam waist and to scan the focused beam. A controller controls adjustment of the beam divergence so that the focal point or beam waist is scanned substantially in a plane. A light source may be provided to generate the light beam. The expander may comprise a diverging lens and a converging lens for expanding the beam to produce a collimated beam. The divergence of the collimated beam is dependent on the distance between the diverging lens and the converging lens, which may be adjusted to adjust the beam divergence. The focusing device may comprise a dry objective lens to focus the collimated beam onto the target material to induce multi-photon absorption in the target material at the beam waist of the focused beam. | 09-13-2012 |
20120276016 | POLYMER COATED MAGNETIC PARTICLES - The invention relates to a polymer comprising a segment of Formula (I): wherein, R is either absent or a linking group, n is an integer greater than 0; and m is an integer from 1 to 6. | 11-01-2012 |
20120309761 | FAST-RESPONSE PHOTOCHROMIC NANOSTRUCTURED CONTACT LENSES - A bicontinuous microemulsion of water, a monomer, and a surfactant copolymerizable with the monomer is polymerized to form a polymeric material, the polymeric material comprising a polymer matrix defining interconnected pores. The polymeric material may additional comprise at least one photochromic agent. The photochromic agent may be dispersed in one or both of the polymer matrix or the interconnected pores. The polymeric material may be used to form photochromic articles including ophthalmic articles such as contact lenses. | 12-06-2012 |
20130004488 | ANTI-CANCER AGENT DELIVERY VEHICLES CAPABLE OF IMPROVED LOADING - There is provided a conjugate of a delivery agent containing a chemical moiety and at least one flavonoid. The flavonoid exists in a monomeric form or dimeric form before conjugation and remains in the monomeric form or dimeric form after conjugation. Preferably, the conjugate comprises two flavonoids. The delivery agent is conjugated at the C6 and/or the C8 position of the A ring of the flavonoid. An anti-cancer agent delivery vehicle comprising an anti-cancer agent and the conjugate is also provided. | 01-03-2013 |
20130023024 | CONJUGATE OF MAGNETIC PARTICLE AND SURFACE MODIFIER LINKED THROUGH CLEAVABLE PEPTIDE BOND - A conjugate is provided for cell processing, which comprises a magnetic particle and a surface modifier having specific affinity to a target cell. The particle and modifier are linked through a cleavable peptide bond. In a method of cell processing, the conjugate is attached to a target cell; the target cell attached to the conjugate is subject to magnetic processing; the peptide bond is cleaved to separate the processed target cell from the magnetic particle; the target cell separated from the magnetic particle is attached to a substrate. The magnetic particle may include an iron oxide, and the surface modifier may include a glucosamine. The particle and modifier may be linked by a linker comprising a protease recognition site and a peptide bond. The linker links the surface modifier to the particle, and cleavage of the peptide bond is catalyzed by a specific protease that recognizes the protease recognition site. | 01-24-2013 |
20130045238 | EMULSIONS FOR TRANSDERMAL DELIVERY - The present invention generally relates to transdermal delivery and, in particular, to transdermal delivery using nanoemulsions and other emulsions. In one aspect, the present invention is directed to emulsions comprising a first, continuous phase and a second, discontinuous phase. The first phase may be an aqueous liquid and the second phase may comprise a lipid, such as isopropyl myristate. In some cases, a surfactant, such as Pluronic® L61, is used to stabilize the emulsion. Surprisingly, it has been found that such emulsions are effective at delivering pharmaceutically active agents, such as ciprofloxacin, when the formulation has a very low water content, for example, less than 30 wt % or less than 10 wt %. This is surprising because high water contents—not low water contents—are typically correlated with greater transdermal drug delivery, and thus, a low water content would have been considered to be unfavorable for facilitating transdermal drug delivery. | 02-21-2013 |
20130131353 | CATALYSTS FOR RING-CLOSING METATHESIS - A catalyst composition is provided, which may be used for ring closing metathesis. In the composition, a catalyst is immobilized on a siliceous mesocellular foam support. A suitable catalyst for use in the composition is a Grubbs-type catalyst or a Hoveyda-Grubbs-type catalyst. | 05-23-2013 |
20130189604 | NANOCOMPOSITES - The invention pertains to heterogenous noble metal nanostructures comprising silver salts and different noble metals, and methods for synthesis and use of various nanocomposite materials having silver salts and different noble metals. | 07-25-2013 |
20130202672 | FIBER-ASSEMBLED TISSUE CONSTRUCTS - The present invention relates to a fiber-assembled tissue construct comprising at least one sinusoid unit, the unit comprising at least two polymeric fibers arranged in a sinusoid structure and fused together, each of said fibers comprising a porous matrix supporting biological components encapsulated in the fiber, wherein the biological components are patterned in three-dimensions within the construct. | 08-08-2013 |
20130203146 | MICROFABRICATED SCAFFOLD STRUCTURES - The present invention relates to a method for producing a three-dimensional scaffold construct comprising encapsulated cells, the method comprising: (a) providing a solution comprising cells, a photoinitiator, and a plurality of units capable of forming polymer chains; (b) providing a photolithography instrument comprising a two-photon laser; and (c) using the instrument to apply the laser to the solution to activate the photoinitiator thereby facilitating polymerisation of said units to form polymer chains, and, cross-linking of the polymer chains; wherein the laser is applied to the solution in three-dimensions in a pre-defined pattern to assemble said construct, and said cells are encapsulated within the assembled construct. | 08-08-2013 |
20130206673 | TUBULAR FIBER MEMBRANE WITH NANOPOROUS SKIN - A wet spinning process for forming a tubular fiber membrane is provided. The tubular fiber membrane has a nanoporous skin layer and a microporous lumen layer. The skin layer defines an outer surface of the fiber membrane and the lumen layer defines a lumen surface of the fiber membrane. The pores in the skin layer may have an average pore size of less than about 7 nm, and pores in the lumen layer may have an average pore size of from about 0.5 to about 3 μm. The fiber membranes may be used in artificial renal proximal tubules, artificial kidneys, bioreactors, or fiber cartridges. | 08-15-2013 |
20130268060 | METHOD FOR DIFFERENTIATING EMBRYONIC STEM CELLS INTO CELLS EXPRESSING AQP-1 - The present invention relates to methods of differentiating a human embryonic stem (ES) cell into a cell, specifically a renal epithelial cell, expressing AQP-I. The methods disclosed comprise culturing human ES cells in a renal specific medium in the presence of an extracellular matrix molecule. The cells produced according to said method can be used to treat renal related disorders such as renal failure, nephrosis, Bright's disease and glomerulitis. | 10-10-2013 |
20130288287 | FIBROUS STRUCTURE - A fibrous structure comprising an assembly of hair follicle cells within a fibrous matrix. | 10-31-2013 |
20130295637 | FIBROUS SUBSTRATES FOR CELL PROPAGATION AND DIFFERENTIATION - The present invention relates to a method of releasably encapsulating pluripotent embryonic stem cells in a degradable continuous polyionic fiber for tissue culture, wherein the encapsulated embryonic stem cells are able to maintain a pluripotent phenotype in tissue culture; the method comprising (a) contacting an aqueous solution of a polyanion with an aqueous solution of a polycation to form an interface between the aqueous solution of polyanion and the aqueous solution of polycation, and wherein the aqueous solution of polyanion or the aqueous solution of polycation or both the aqueous solution of polyanion and the aqueous solution of polycation comprises a suspension of pluripotent embryonic stem cells; (b) drawing a continuous polyionic fiber which comprises encapsulated pluripotent embryonic stem cells from the interface; (c) passing the continuous polyionic fiber comprising encapsulated pluripotent embryonic stem cells in a continuous process through a solution which reduces secondary complexation of the components of the polyionic fiber. | 11-07-2013 |
20140005396 | N-HETEROCYCLIC CARBENE METALLACYCLE CATALYSTS AND METHODS | 01-02-2014 |
20140193849 | GLUCOSE-PEG CONJUGATES FOR REDUCING GLUCOSE TRANSPORT INTO A CELL - There is provided a glucose-PEG conjugate comprising a PEG moiety conjugated to a linear glucose moiety at the C1 position of the glucose moiety. The glucose-PEG conjugate may be used to reduce glucose transport into a cell and may be used to treat a proliferative disorder. | 07-10-2014 |
20140199381 | CORE-SHELL MICROSPHERES - The specification describes a substance comprising a plurality of microparticles. The microparticles comprise a core comprising a first polymer and a shell surrounding said core and comprising the first polymer and a second polymer, wherein the second polymer is less rapidly degradable than the first polymer. A process for making the microparticles and uses of the microparticles are also described. | 07-17-2014 |
20140326672 | MELAMINE ALDEHYDE POLYMERS - Described herein is a melamine-aldehyde polymer, wherein the polymer has a pore volume in the range of about 1.5 to 5 cm3/g. | 11-06-2014 |
20150034242 | SCAFFOLD AND METHOD OF FORMING SCAFFOLD BY ENTANGLING FIBRES - A porous scaffold is provided, which comprises tangled fibres. A porous scaffold can be formed by applying a fluid to fibres to entangle them. The fibres comprise a polyelectrolyte complex and a cross-linker. The cross-linker links polyelectrolytes within individual fibres and inhibits secondary polyelectrolyte complication between adjacent fibres. | 02-05-2015 |
20150050711 | DEVICE FOR MANUFACTURING POLYMER FIBERS AND USES THEREOF - There is provided a device, and related method and uses, for drawing a polymer fiber, the device comprising: a. at least two polymer compartments, wherein each polymer compartment is capable of retaining a polymer solution, and wherein adjacent compartments comprise different polymer solutions; and b. a slider comprising at least one prong, wherein the prong is capable of contacting the different polymer solutions, and wherein the slider is arranged in a retractable manner from the at least two polymer compartments. There is further provided a system and a related method for manufacturing a polymer fiber. | 02-19-2015 |
20150079499 | PARTICLE EXHIBITING CATALYTIC ACTIVITY - A particle exhibiting catalytic activity comprising (a) an inner core formed of an alloy material; and (b) an outer shell formed of a metal material surrounding the inner core, wherein the alloy material is selected such that the inner core exerts a compressive strain on the outer shell. | 03-19-2015 |
20150080612 | METHOD OF ACETALIZING AN ALDEHYDE - A method of acetalizing an aldehyde comprising reacting said aldehyde with an alcohol in the presence of a polymeric catalyst to form an acetal wherein the polymeric catalyst is a mesoporous poly-melamine-formaldehyde polymer. | 03-19-2015 |
20150087057 | IN VITRO METHOD FOR CULTURING STEM CELLS - There is provided a method for culturing a stem cell in vitro. The method comprises providing a substrate surface coated with a coating comprising a molecule having a catechol moiety or a polymer thereof; and growing a stem cell on said coated substrate surface in a growth medium. | 03-26-2015 |