352results about How to "No degradation" patented technology

The invention provides medicinal compositions of taxol medicaments and pharmaceutically acceptable biological carriers and preparation method thereof. The medicinal compositions of the taxol medicaments and carrier proteins are nano mixed suspensions prepared from the carrier proteins, organic phases, stabilizers, freeze drying protective agents and the taxol medicaments. The weight volume percentconcentration of the taxol medicaments is 0.075 to 1.0. The taxol medicament nano particles prepared by using high-pressure homogenization can reduce adverse reaction aroused by the taxol medicamentsand improve the safety of the clinical administration of the taxol medicaments. The preparation process of the nano mixed suspensions is simple and feasible and is suitable for large-scale preparation and industrial production.

The invention relates to a resin capable of directly formed by laser and a preparation method thereof. The resin is prepared from the following raw materials in parts by weight: 93-97 parts of a matrix resin, 3-7 parts of a laser sensitive additive, and 0.1-0.9 part of other components. The preparation method comprises the following steps: weighting the raw materials in parts by weight: mixing the matrix resin, the laser sensitive additive and other components in a medium-speed mixer to mix for 20 minutes; and placing the obtained mixture into a twin-screw extruder, and then carrying out melting extrusion and granulating on the obtained product. Compared with the prior art, the resin disclosed by the invention mainly broadens the scope of laser sensitive additives which are no longer limited to spinel structured compounds, has small possibility of causing PC degradation, and can be prepared into various light-color products.

The present invention relates to a resin material for an electrical insulating material, an electrical insulating material and electric wire and cable using the same. A resin material for an electrical insulating material according to present invention is characterized in that the resin component thereof comprises an ethylene alpha-olefin copolymer (A) which satisfies specific conditions, such as a density of 0.92~0.96 g/cm3, a melt flow rate (MFR) of 0.01~200 g/10 minutes, a molecular weight distribution (Mw/Mn) of 1.5~5.0, and possessing only one peak in terms of the number of peaks observed in an elution temperature-eluted amount curve as measured by the temperature raising elution fractionation (TREF) method, etc., wherein said resin component contains a unit derived from at least one type of monomer selected from among a carbonyl or carbonyl derivative group-containing monomer, a hydroxyl group-containing monomer, a nitro group-containing monomer, a nitrile group-containing monomer, an aromatic ring-containing monomer, and a compound or monomer containing two or more ethylenic linkages. This resin material for an electrical insulating material is suitable for use in an electrical insulating material for an electric wire and cable, as it exhibits excellent processability and electrical insulating properties without degradation of the mechanical strength, and even after cross-linking, exhibits superior electrical insulating properties.

The invention discloses a multifunctional composite carpet comprising three-dimensional warp knitting fabric composed of a top layer, a bottom layer and a connecting layer connecting the top layer and the bottom layer. The top layer, the bottom layer and the connecting layer enclose to form a cavity. The multifunctional composite carpet is characterized in that composite which can be solidified is filled in the cavity, the top layer is made of mesh fiber fabric, the bore diameter of each mesh of the mesh fiber fabric ranges from 0.02mm to 60mm, and the meshes in the top layer are in regular or irregular shapes. The multifunctional composite carpet and the ditch construction technology thereof have the advantages of good overall performance, environment friendliness, flexibility in application, convenience in using, mounting, demounting and transporting; the solidified composite can form special materials of mesh composite concrete layer with serialized functions and having certain thickness and hardness; the ditch construction technology is simple in technology, convenient to construct, high in efficiency, good in overall performance and attractive in appearance.

The invention discloses a method for mixing soft tissue filling agent with anesthetics injecta before use. The method comprises the following steps of: injecting anesthetics injecta into a prefilling injector filled with soft tissue filling agent by a microsyringe for multiple times, after the anesthetics injecta is injected, stewing for a short time, and then performing even mixing. According to the method, the pain caused by the cosmetic injection can be avoided, the method is high in operability, and is low in technical requirements on operating personnel, and the anesthetics injecta and the soft tissue filling agent can be evenly mixed with each other conveniently and quickly. Compared with the existing method for preparing the preparation by directly adding the anesthetics into hyaluronic acid gel, the method has the advantage of not needing the compatibility test, the stability test and even the clinic test of two drugs under the condition of high-temperature sterilization, so that the method is low in cost. Furthermore, after the mixing is carried out by the method, the soft tissue filling agent is free from the chemical reaction phenomena such as degradation, precipitation, turbidness and the like, so that the method is safe.

The invention discloses a method for extracting nutmeg oil by supercritical carbon dioxide. The method uses the supercritical carbon dioxide for extracting fat-soluble ingredients in nutmeg, and then uses the difference of the solubility of the supercritical carbon dioxide in a first stage rectifying column for separation, and finally the separation and refining is carried out in a second stage separator. The extraction and precision separation of nutmeg aromaticity ingredient nutmeg oil is disposably carried out. The dehydration and impurity removal can be simultaneously carried out in the process of separation. The obtained nutmeg oil product is characterized by aromatic flavor, comprehensive ingredients, good product quality, difficult degradation of active ingredient and high product yield without containing waxiness component, solid content, organic solvent, agriculture remanet and heavy metal pollution and is convenient for large scale commercial process. The extractive is easy to be conserved after dehydration and refining removal of impurities.

The invention relates to aramid fiber coated with inorganic nanoparticles on the surface and a preparation method thereof. The preparation method comprises the following steps: functionalizing the surface of the aramid fiber to enable the surface of the fiber to contain methoxy groups; hydroxylating calcium-oxide-doped cerium oxide and reacting the cerium oxide with the fiber to obtain the aramid fiber coated with the inorganic nanoparticles on the surface. According to the invention, the hydroxylated calcium-oxide-doped cerium oxide is an inorganic particle with the photocatalytic activity much lower than that of ultraviolet absorbents such as TiO2 and zinc oxide; the inorganic particles can absorb ultraviolet rays to protect the fiber from damage caused by the ultraviolet rays, and the damage caused by a photocatalytic action of the inorganic particles to the fiber during ultraviolet radiation can be avoided, so that the hydroxylated calcium-oxide-doped cerium oxide is a safe, effective and long-lasting ultraviolet absorber. The surface of the modified aramid fiber is provided with a large number of reactive groups, so that adhesion of the modified aramid fiber to a lot of substrates can be improved, and thus the application field of the fiber is widened; the nanoparticles with high heat resistance are coated on the surface of the fiber, so that the thermal property of the fiber can be effectively improved.

The invention belongs to the technical field of a semiconductor material and device, and discloses an oxide semiconductor thin film and a thin film transistor prepared from the same. The oxide semiconductor thin film is obtained by doping a few amount of rare-earth oxide into a metal oxide semiconductor thin film. The thin film transistor comprises a grid, a channel layer, a grid insulation layer, a source and a drain, wherein the channel layer is prepared from the oxide semiconductor thin film, the grid insulation layer is arranged between the grid and channel layer, and the source and the drain are respectively connected to two ends of the channel layer. The oxide semiconductor thin film material and the thin film transistor prepared from the same have very excellent illumination stability, and moreover, the oxide semiconductor thin film material and the thin film transistor prepared from the same are simple in preparation process and high in applicability.

The invention discloses a formed konjak mask and a preparation method thereof. The mask is prepared by utilizing konjak powder as a raw material, purifying, preparing glue, and then mixing the glue with carboxymethyl cellulose and xanthan gum, adding glycerin and sodium carbonate to prepare an emulsion, curing and forming, dealkalizing and sterilizing, and finally immersing into a skin moisturizer. The formed konjak mask prepared by the preparation method disclosed by the invention is strong in toughness, good in ductility, good in adhesion and hydrophilia and capable of being closely combined with skin to provide sufficient moisture for the skin and prevent the moisture in the stratum corneum of skin from evaporating so as to enable the additional nutritional skin moisturizer to be easily absorbed, maintain the face moistness and avoid the accelerated aging the face skin; in addition, the konjak powder is a pure plant source substance, thereby being free of stimulation, safe and free of toxic or side effect to the skin. The formed konjak mask is little in pollution in the production process and liable to degrade, thereby being environmentally-friendly.

The invention belongs to the field of rice culturing and in particulates to a special soilless organic composite matrix for raising seedlings of japonica rice. The matrix taking agricultural wastes as materials comprises the following components in percentage by weight: 55%-65% of rice straw, 25%-35% of cow dung, 5%-10% of rice husk, 2%-3% of carbamide, 1.5%-2.0% of straw-decomposing inoculants, 15% of peat, 1%-3% of nitrogen phosphorus and potassium fertilizers, 0.015%-0.006% of seedling growing agent and 0.002% of root growth promoting agent. The special soilless organic composite matrix for raising seedlings of japonica rice has the advantages that the local agricultural wastes serve as the main raw materials, so that the matrix is available in material, low in transportation and production cost, facilitates the cyclic utilization of the agricultural wastes, reduces the pollution to the environment, completely solves the problems that the vegetation is damaged when soil is extracted for raising the seedlings and the soil is extracted difficultly and reduces the labor strength and cost for processing the extracted soil; in addition, auxiliary additives are organic non-toxic products, easy to degrade in a farmland ecosystem and free of secondary pollution; the matrix is long in time period suitable for planting the seedlings; the time period of the matrix suitable for planting the seedlings can be extended to 28 days; and the matrix is great in range of seedling ages and strong in adaptively in date of seeding.

The invention relates to a bioactivity plant synergistic nutrient preservation concentrated solution. The bioactivity plant synergistic nutrient preservation concentrated solution comprises bioactive matters, plant organism nutrients, mineral matters needed by a plant, microelement complex liquid, and the balance of stable type sterilized water agent. The nutrient preservation concentrated solution which is applied to different crops in different modes is used to reinforce the resistance of the plant and fruits thereof to diseases and insect pests, bacteria and corrosion, drought and waterlogging, coldness and hotness, and wound and fatigue, and provide double safeguards for plant growth and development and nutrition conveyance. The nutrient preservation concentrated solution is an innocuous, degradable, easily absorbed, residue-free, pollution-free, low carbon type biologic green high-tech product capable of degrading pesticide residues, improving fertilizer efficiency and speeding up the available nutrient absorption of the plant.

The invention discloses a strippable resin which comprises the following components in parts by weight: 40-70 parts of polyvinyl chloride resin, 20-50 parts of plasticizer, 5-10 parts of epoxy compound, 2-5 parts of phosphite ester, 2-5 parts of polyhydric alcohol, 3-5 parts of stabilizing agent and 1-2 parts of thixotropic agent. The polyvinyl chloride resin is different polyvinyl chloride resins with polymerization degrees of 1000-1700 or a mixture thereof. The strippable protection coating disclosed by the invention is excellent in thermal aging resistance, shows excellent thermal stability in a high-temperature process of 150-160 DEG C, has no release of an HCl gas in the process, keeps a good strippability after being baked, has no residue after being stripped, thereby being free from generating corrosion and pollution to a protected ITO (Indium Titanium Oxide) line.

The invention provides a method for preparing a chitosan-based composite dressing for medical use. Chitosan, honey, gelatin and other biological materials as the raw materials are subjected to a series of processes to be dissolved into a whole, thus obtaining chitosan-based composite fluid dressings, hydrogel dressings and emulsion dressings for medical use. According to in-vitro antibacterial tests, toxicological tests, skin irritation tests, in-vitro degradation tests and other tests, the antibacterial activity of the product is higher than 99%; the biocompatibility thereof is good; the absorption capacity and seepage thereof are high; the skin-friendliness thereof is good; and the curative effect thereof can be improved, while compared with the prior art, the consumption of chitosan can be greatly reduced, and the cost can be greatly reduced.

The invention relates to an enhanced AlGaN/GaN HEMT (High Electron Mobility Transistor) device and a manufacturing method thereof, belonging to the technical field of semiconductor devices. The device comprises an AlGaN/GaN heterojunction structure located on the surface of a substrate and gate, source and drain electrode structures, wherein F ion or Cl ion fixed negative charges are arranged in a gate dielectric film material. In the invention, through introducing the F ion or Cl ion fixed negative charges into a gate dielectric film and controlling the electric charge quantity of the introduced fixed negative charges, the threshold voltage of a transistor is regulated and the enhanced AlGaN/GaN HEMT device with the threshold voltage greater than zero is realized. In the invention, the enhanced AlGaN/GaN HEMT device structure is obtained though a method of introducing the fixed negative charges into the gate dielectric film material; interface characteristics of the AlGaN/GaN heterojunction are not influenced so that the performance degeneration of the device is not caused; the process is simple and controllable and is compatible with the manufacturing process of a depletion mode (normally-on) AlGaN/GaN HEMT device; the source-drain saturation current density and the gate-drain current of the manufactured device for manufacturing a GaN enhanced effect transistor are small; and therefore, the device is particularly suitable for developing a GaN logic circuit.

The invention relates to a heparin derivative polysaccharide mixture and a preparation method and a medicinal composition thereof. Specifically, the heparin derivative polysaccharide mixture of the invention is a degradation product of heparin or heparin ester or heparin ester salt and is characterized in that the weight-average molecular weight is 3,100 to 4,500 Daltons, the activity of anti-coagulation factor Xa is high, and the activity of anti-coagulation factor IIa is low. The heparin derivative polysaccharide mixture of the invention has excellent antithrombotic performance, low side effect, and has no residues of adverse components such as organic base and dermatan sulfate and the like.

An image sensor including an assembly of pixels each having a photodetector, and having circuitry for detecting, at a given time, pixels receiving a light intensity value substantially equal to a given value and coding circuitry providing an address for each of said pixels.

The invention relates to a method and a kit for extracting total DNA of soil and sediment. The method comprises the following steps of: dissolving and removing humic acid from the soil and sediment to the greatest extent by using a humic acid dissolving solution; performing complex-precipitation on the residual humic acid; randomly cracking and releasing genomic DNA in bacteria; centrifuging to remove complexed humic acid and protein from the solution; and regulating supernate containing DNA by using an acid-base regulating agent and a high-concentration salt solution, and specifically adsorbing by using a silica gel adsorption film to make the genomic DNA purified and recovered. By the method, a plurality of samples can be extracted in short time, the normal operating time is less than 70 minutes, and massive DNA samples having high purity and suitable for downstream analysis can be obtained. By the kit established according to the method, the obtained DNA samples have high purity without degradation and can be directly used for subsequent molecular biology analysis; meanwhile, a step of purifying the DNA by toxic reagents such as phenol and chloroform in the traditional DNA extraction method is avoided, and the invention has wide application prospect.

Disclosed in the invention is a manufacturing method for an electrode of a lithium niobate optical waveguide device. The manufacturing method comprises the following steps: using SiO2 as a mask and manufacturing an optical waveguide by using annealing proton exchange processing; utilizing the SiO2 mask as a mark to directly carry out self-alignment overlaying on the optical waveguide and an electrode graph; removing the SiO2 mask of the electrode zone by employing a method of combination of dry etching with wet etching; and utilizing sputtering and metal stripping technologies to manufacture the electrode graph and removing the residual SiO2 mask. When the method is used, the electrode graph can be formed at the lithium niobate optical waveguide and accurate overlaying between the optical waveguide and the electrode is ensured; the edge of the electrode is smooth; the defects are less; and the yield is high.