13726results about How to "Improve purification effect" patented technology

An improved elastomeric material is described comprising an essentially noncross-linkable amorphous copolymer of tetrafluoroethylene (TFE) and perfluoromethyl vinyl ether (PMVE) which is both a thermoplastic and exhibits exceptional mechanical properties. This material is particularly suitable for use in ultra-clean environments, and particularly for use in an implantable device, since it does not contain contaminants that previous thermoset TFE / PMVE copolymers have required. Among the improved properties of the present invention are excellent biocompatibility, high matrix tensile strength, high clarity, high abrasion resistance, high purity, adequate elasticity, and ease of processing due to the thermoplastic, and noncross-linkable structure of the copolymer. The material of the present invention is also a high strength bonding agent particularly suited for bonding porous PTFE to itself or to other porous substances at room or elevated temperatures.

In certain aspects, the present invention provides compositions and methods for promoting bone growth and increasing bone density.

Novel and efficient syntheses create novel piperazinone intermediates which facilitate the production and use of PNAs. Such syntheses and the products enhance the feasibility of a system which permits the rapid identification of PNA oligomers useful as therapeutics, diagnostics and / or gene characterization tools. A first component of the system is a universal PNA library that most preferably incorporates one or more universal nucleotide bases into carefully selected positions within each oligomer species thereby providing the library with the screening ability of a much larger library. The second component of the system is a high throughput screening system that includes a number of assays designed to provide information on the binding activities of the different PNAs to a target nucleotide sequence (generally, a DNA or RNA sequence). The third component is a software system especially designed to provide rapid analysis of the data collected from the high throughput screening system and to determine therefrom the sequence base identities and sequence lengths of PNA oligomers most likely to bind to and appropriately affect the target molecule.

The invention provides a thick coating material capable of purifying air and a preparation method thereof, belonging to the building material field. An internal wall coating decorative material comprises 5 to 40 weight portions of a porous absorbing material and 10 to 40 weight portions of a composite photocatalysis material in every 100 weight portion of the paint. In the preparation method, the coating material, is formed by compounding a mineral material with the nanometer photocatalysis material to obtain a high activity purifying material, matching the high activity purifying material with other nanometer materials and the porous absorbing material, and then adding an inorganic filling material, a skeletal material and other addition agents, can remove harmful gases such as formaldehyde and toluol in air and has the environmental protection function. The paint has good effect for removing formaldehyde, is effective continuously, has certain thickness when the coating layer is used, has simple construction, and beautiful and elegant patterns, is well-bedded, is strong in the three-dimension effect and has good decorative effect.

A catalyst has a base catalyst layer containing platinum and barium as precious metal supported by alumina and an over catalyst layer containing platinum and rhodium as precious metal supported by zeolitr. The platinum and rhodium in the over catalyst layer activate NOx and HC so as to make them more reactive in terms of energy, and the barium in the base catalyst layer makes the platinum be more dispersive in the base catalyst layer. Under the existence of dispersive platinum, NOx in exhaust gas is decomposed and purified by reaction with reactive NO2 and partially oxidized HC generated in the over catalyst layer.

A process to obtain linear double-stranded covalently closed DNA "dumbbell" constructs from plasmids by restriction digest, subsequent ligation with hairpin oligodesoxyribonucleotides, optionally in the presence of restriction enzyme, and a final digestion with endo- and exonucleolytic enzymes that degrade all contaminating polymeric DNA molecules but the desired construct. The invention also provides a process to obtain said dumbbell constructs employing endonuclease class II enzymes. Furthermore, the invention provides a process to obtain linear, covalently closed DNA molecules, such as plasmids, free from contamination by genomic DNA, by submitting the DNA preparation to a facultative endonucleolytic degradation step and an obligatory exonucleolytic degradation step.

In certain aspects, the present invention provides compositions and methods for increasing red blood cell and / or hemoglobin levels in vertebrates, including rodents and primates, and particularly in humans.

A method of assay for target polynucleotides includes steps of isolating target polynucleotides from extraneous non-target polynucleotides, debris, and impurities and amplifying the target polynucleotide.

The present invention relates to an integrated closed loop system for aquaculture in at least one culturing tank and using continuous bioreactor technology for the biological treatment and removal of organic material, nitrogen and phosphorous, comprising: an integrated, partially or wholly closed loop system for waste water treatment, where the water contains nitrogen containing compounds and / or substances, comprising at least one production unit of such nitrogen containing compounds and / or substances and using continuous bioreactor technology for the biological treatment and removal of organic matter, nitrogen and phosphorous from the said water at continuous flow, comprising: a) at least one suspended carrier bioreactor for bacterial growth under anoxic conditions to cause anaerobic denitrification, with one or several compartments, preceding b) at least one suspended-carrier bioreactor for bacterial growth under oxic conditions to cause aerobic nitrification, c) the denitrification taking place after the production unit, and d) the nitrification taking place prior to the production unit in a by-pass mode as part of the continuous flow.

In certain aspects, the present invention provides compositions and methods for decreasing FSH levels in a patient. The patient may, for example, be diagnosed with an FSH-related disorder or desire to delay or inhibit germ cell maturation.

The present invention provides a linker preferably used when constructing an mRNA / cDNA-puromycin-protein conjugate used in an in vitro virus method, and an mRNA / cDNA-puromycin-protein conjugate constructed using that linker. More specifically, the present invention provides a linker for ligating mRNA and puromycin or a puromycin-like compound to construct an mRNA / cDNA-puromycin-protein conjugate, the linker comprising a single-stranded RNA as a main backbone, and having, in this main backbone, a solid phase binding site for binding an mRNA-puromycin-protein conjugate to a solid phase site, and a pair of cleavage sites provided at locations surrounding the solid phase binding site; an mRNA-puromycin-protein conjugate constructed using this linker; an mRNA bead or an mRNA chip comprising this conjugate; a protein chip produced from this mRNA chip; and a diagnostic kit using the mRNA bead or the mRNA chip.

In certain aspects, the present invention provides compositions and methods for treating or preventing breast cancer in humans.

In certain aspects, the present invention provides compositions and methods for promoting bone growth and increasing bone density, as well as for the treatment of multiple myeloma.

The invention provides isolated non-human primate Fc receptor polypeptides, the nucleic acid molecules encoding the Fc receptor polypeptides, and the processes for production of recombinant forms of the Fc receptor polypeptides, including fusions, variants, and derivatives thereof. The invention also provides methods for evaluating the safety, efficacy and biological properties of Fc region containing molecules using the non-human primate Fc receptor polypeptides.

In certain aspects, the present invention provides compositions and methods for increasing red blood cell and / or hemoglobin levels in vertebrates, including rodents and primates, and particularly in humans.

The invention relates to methods of increasing the titre of a protein of interest in a cell as well as the improved production and purification of optimised biomolecules, one component of which is the domain CH3. A frequently observed effect in biomolecules is the cleaving of the C-terminal amino acid(s), e.g. the C-terminal lysine. The usually incomplete processing of the heavy chain of antibodies for example leads to product heterogeneity. To prevent this product heterogeneity the corresponding codon of the C-terminal lysine of the heavy antibody chain has been deleted by recombinant DNA technology. These optimised antibodies lead to a product titre which is higher than in the wild-type. In addition, they prove advantageous during purification by having better elution characteristics as a result of the reduced charge heterogeneity.

Novel cell surface molecules recognized by monoclonal antibodies against a cell surface molecule of lymphocytic cells that play an important role in autoimmune diseases and allergic diseases have been isolated, identified, and analyzed for their functions. The cell surface molecules are expressed specifically in thymocytes, lymphocytes activated by ConA-stimulation, and peripheral blood lymphocytes, and induce cell adhesion. Antibodies against the cell surface molecules significantly ameliorate pathological conditions of autoimmune diseases and allergic diseases.

The invention pertains to the technical field of fume purification. The provided functional filter felt for eliminating harmful constituents of fume can realize the desulfurization or denitration of fume when removing dust; the filter felt is made from fiber materials and a functional catalyst in a compound manner; when purifying the harmful constituents of fume, the filter felt filters the dusts in the fume with nonwoven fabrics made from high temperature-resistant fiber material and carries out a catalytic reaction to eliminate nitrogen oxides (NOX) and / or sulfur oxides (SOX) through the functional catalyst contained in the filter felt. The provided filter felt is applicable to fume dedusting devices, fume desulfurization devices and fume denitration devices in power plants, metallurgical plants and chemical plants, in particular to the manufacturing of bag type fume filter. Compared with the prior art, the invention simplifies the fume purifying processes, improves processing efficiency, effectively saves the investment and reduces operational expenses, thus being suitable for the modification of the existing fume dedusting device.

In certain aspects, the present invention provides compositions and methods for increasing red blood cell and / or hemoglobin levels in vertebrates, including rodents and primates, and particularly in humans.

In certain aspects, the present invention provides compositions and methods for promoting bone growth and increasing bone density.

An exhaust gas purifying catalyst is constructed by laminating sequentially a first layer containing alumina, a second layer containing hydrocarbon adsorbent, and a third layer containing catalytic components on a monolithic support in which a cell sectional shape is a polygon. The second layer has a ratio Lmax / Lmin of a thickest portion (Lmax) at cell corner portions to a thinnest portion (Lmin) at cell flat portions in a range of 1 to 10, and has a thickness of 10 to 500 mum. The catalyst can achieve the purification of HC, CO, and NOx with good balance, and improve the purification performance of cold HC by controlling a diffusion speed of the exhaust gases that pass through cells in a support and diffuse into a coating layer.

A cell surface molecule that is expressed specifically in thymocytes, lymphocytes activated by ConA-stimulation, and peripheral blood lymphocytes. This molecule is involved in signal transmission of the secondary signal (costimulatory signal) essential for the activation of lymphocytes such as T cells and regulates functions of activated lymphocytes such as activated T cells. Disclosed are an antibody or a portion thereof, which binds to a polypeptide of the cell surface molecule, a polypeptide fragment thereof, or a fusion polypeptide comprising the fragment; a cell secreting the antibody or its portion; a pharmaceutical composition comprising the antibody; and methods of using the compositions for therapeutic, diagnostic and / or experimental purpose.