32results about How to "Important industrial application value" patented technology

The invention provides a dendritic gold-core/platinum-shell bimetal nanometer rod and a preparation method thereof. The dendritic gold-core/platinum-shell bimetal nanometer rod comprises a cylindrical gold nanometer-rod core and a porous platinum-shell layer covering the outer surface of the cylindrical gold nanometer-rod core; the diameter of the cylindrical gold nanometer-rod core is 10 to 15 nanometers; the length of the cylindrical gold nanometer-rod core is 55 to 60 nanometers; the thickness of the porous platinum-shell layer is 0.4 to 8 nanometers; and the length of platinum grains covering the outside of a nanometer rod is 2 to 4 nanometers. The preparation method provided by the invention has the advantages of simplicity, flexibility, environmental protection, green chemistry and low energy consumption. In addition, the obtained bimetal nanometer rod with a gold-core/platinum-shell structure has the characteristics of high yield, narrow size distribution, stable structure and adjustable optical properties.

The invention discloses a cross-linked polypropylene, the cross-linked polypropylene is alpha-silane cross-linked polypropylene, and the cross-linked polypropylene is composed of the following raw materials in parts by weight: 100 parts of polypropylene, 0.10 to 0.50 part of peroxide, and 2.0 to 6.0 parts of alpha-silane. The alpha-silane cross-linked polypropylene is suitable for being used as a 3D printing material, a foaming material and a stretching-resistant braid material, and applied to other application fields, in which the material can replace nylon; compared to nylon, the material is lighter and more environment-friendly, furthermore, the cost of the material is lower, and thus the material has a very important industrial application value.

An embodiment of the invention discloses a manufacture method of a thin film transistor driving rear panel. The manufacture method is used for efficiently using a metal-oxide semiconductor material to manufacture the thin film transistor driving rear panel. The embodiment comprises preparing and imaging a metal conducting layer; sequentially depositing insulating films and metallic oxide films on the metal conducting layer to respectively serve as gate insulation layers and active layers; imaging the active layers according to shapes of the metal conducting layer; depositing the insulating films on the active layers to serve as corrosion stopping layers; using a gray level mask plate imaging process, preparing contact holes on the gate insulation layers and imaging the corrosion stopping layers, and defining source and drain electrode area of a thin film transistor and active area of storage capacitance; and depositing and imaging a conductive thin film layer on the corrosion stopping layers.

The invention discloses a solid culturing method for increasing the active product yield of antrodia camphorata by adopting a two-stage temperature control technology. The method comprises the following steps of: preparing an antrodia camphorata slant strain and a liquid seed, and inoculating the liquid seed onto a solid culture medium for culturing; controlling the culturing temperature at 26-37DEG C at the first culturing stage (0-20 days); and controlling the culturing temperature at 18-26 DEG C at the second culturing stage (20-40 days). During solid culture of active products of antrodia camphorata with a two-stage temperature control process, the yield of Antrodin C is up to 5.0-7.0 mg/g, the yield of AntrodinB is up to 1.0-2.0 mg/g, and the yield of Antroquinonol is up to 1.2-2.5 mg/g. The two-stage temperature control technology for the active products of antrodia camphorata provided by the invention is simple and efficient and has an important industrial application value; and meanwhile, the production of other active metabolic products of antrodia camphorata have certain enlightening meanings.

The present invention concerns a high vacuum in-situ refining method for high-purity and superhigh-purity materials and the apparatus thereof, characterized in heating the upper part and lower part of crucible separately using double-heating-wires diffusion furnace under vacuum, thereby forming the temperature profile which is high at upper part and low at lower part of crucible, or in reverse during different stages; then heating the crucible in two steps to remove impurities with high saturation vapor pressure and low saturation vapor pressure respectively in efficiency; and obtaining high-purity materials eventually. The whole procedure is isolated from atmosphere, reducing contamination upon stuff remarkably. The present invention could provide products with high-quality and high production capacity, which are stable in performance, therefore is reliable and free from contamination. The present invention is appropriate for manufacture of high-purity and superhigh-purity materials, particularly for manufacture of high-activity high-purity materials.

The invention relates to a non-heat-treatment strengthened high-strength high-toughness pressure casting aluminum-magnesium-silicon alloy, and a preparing method thereof. The pressure casting aluminum-magnesium-silicon alloy comprises, by weight percent, 6.0 to 8.0% of Mg, 2.0 to 3.6% of Si, 0.6 to 0.9% of Mn, 0.15 to 0.20% of Ti, 0.004 to 0.006% of Be, 0.003 to 0.01% of Ca, 0.03 to 0.1% of V, 0.02 to 0.1% of Zr, 0.01 to 0.2% of RE, smaller than or equal to 0.4% of the sum of the total amount of other impurities and the balance Al. the alloy has the high strength and high toughness under the casting-state condition, good pressure casting can be achieved, and the application needs of large thin-wall car body structural parts of the car industry can be greatly met.

The invention discloses a lipase mutant with increased optimum temperature, which belongs to the technical field of enzymatic genetic engineering. The lipase mutant with increased optimum temperature disclosed by the invention is obtained through taking rhizopus chinensis China center for type culture collection (CCTCC) M201021 lipase as a parent and utilizing a molecular biological technique, and the mutant amino acid of the mutant is Asp310Val. The optimum temperature of the lipase mutant is increased compare with the optimum temperature of the parent of rhizopus chinensis lipase and has an important industrial application value.

The invention discloses a method for producing hyaluronic acid with small molecular weight by adding hyaluronidase in fermentation process, which belongs to the technology field of the application of enzymolysis reaction in optimization of fermentation process. In the method, hyaluronidase (0.05 to 0.25 g/L) is added in the fermentation process (8 h) to degrade hyaluronic acid, so that the viscosity of a fermentation broth decreases from 300 cp of a reference sample (without hyaluronidase) to 50 to 150 cp, the dissolved oxygen concentration is improved from 0 to 1% of the reference sample to 10 to 15%, the output of hyaluronic acid is improved from 5.0 g/L of the reference sample to 6.0 to 7.0 g/L, and the molecular weight of the hyaluronic acid decreases from 1,300 kDa of the reference sample to 20 to 100 kDa. The inventive method is simple and efficient, and has important industrial application value. The decrease of the viscosity of the fermentation broth results in the improvement of downstream purification efficiency and the reduction of production cost. The hyaluronic acid with small molecular weight produced by the method can be applied to the fields of medicines and healthy food.

The invention discloses a method for producing hyaluronic acid with small molecular weight by adding hydrogen peroxide and ascorbic acid in fermentation process, which belongs to the technology field of the application of oxidative-reductive degradation reaction in optimization of fermentation process. In the method, hydrogen peroxide (0.1 to 1.0 mmol/g hyaluronic acid) and ascorbic acid (0.05 to 0.5 mmol/g hyaluronic acid) are added in the fermentation process (8 h) to degrade hyaluronic acid, so that the viscosity of a fermentation broth decreases from reference 300 cp (without hyaluronidase) to 100 to 200 cp, the dissolved oxygen concentration is improved from reference 0 to 1% to 5 to 10%, the output of hyaluronic acid is improved from reference 5.0 g/L to 5.5 to 6.4 g/L, and the molecular weight of the hyaluronic acid decreases from reference 1,300 kDa to 80 to 200 kDa. The inventive method is simple and efficient, and has important industrial application value. The decrease of the viscosity of the fermentation broth results in the improvement of downstream purification efficiency and the reduction of production cost. The hyaluronic acid with small molecular weight produced by the method can be applied to the fields of medicines and healthy food.

The invention relates to a catalyst for a low-temperature water-gas-shift reaction under a hydrogenous reformed gas and a preparation method thereof. The catalyst of the invention comprises the following component in percentage by weight: 0.1 to 3 percent of aurum (Au) and 97 to 99.9 percent of zirconium oxide (ZrO2), wherein the Au is an active component; and the ZrO2 is a carrier. The ZrO2 carrier prepared by the method has larger specific surface area and larger pore volume, so the active component Au can be dispersed better. The catalyst of the invention still has higher low-temperature water-gas-shift catalytic activity under the condition of lower Au mass content, for example, when the Au weight content reduced to 1 percent, the carbon monoxide (CO) conversion rate of the Au/ZrO2 catalyst is still near the balance conversion rate at the temperature of between 210 and 300 DEG C. The catalyst of the invention has the advantages of wide using conditions and particular suitability for a high airspeed hydrogenous reformed gas atmosphere.

The present invention relates to a process for producing flavone through liquid-solid double-phase culture of medicinal mushroom phellinus igniarius, and belongs to the technical field of biological fermentation engineering. According to the present invention, mainly during a phellinus igniarius liquid fermentation process, a macroporous absorption resin is added to a culture liquid to establish a liquid-solid double-phase culture system so as to improve a flavone yield; with the double-phase culture process, the flavone yield can be up to 2174.35 mug/ml and is increased by 35% compared with the control; and the process has characteristics of simple operation and strong generalization, and is especially suitable for large-scale higher fungi fermentation and active substance production.

The invention discloses a method for producing trans-4-hydroxyl-L-proline by means of fermentation by the aid of recombinant corynebacterium acetoacidophilum. Recombinant plasmids carried by the recombinant corynebacterium acetoacidophilum have proline hydroxylase genes (P4H) capable of catalyzing proline to generate trans-4-hydroxyproline. The method has the advantage that the free L-proline can be converted into the trans-4-hydroxyl-L-proline by the aid of proline-4-hydroxylase in cells of the recombinant corynebacterium acetoacidophilum under the condition of existence of alpha-ketoglutaric acid and ferrous ions. The invention further discloses application of corynebacterium acetoacidophilum to producing the trans-4-hydroxyl-L-proline.

The invention discloses a self-forming membrane filtering method and device for wastewater treatment. According to the technical scheme, a fixed membrane carrier is arranged in an airtight cylinder; solid suspensions (SS) in wastewater are coagulated into relatively large flocculent particles under the action of a flocculant; the flocculent particles are attached to the cylinder or prism membrane carrier under preset pressure and cyclone action to automatically form a membrane; the wastewater is filtered, and the filtered wastewater is discharged through the self-forming membrane layer. The self-forming membrane filtering device comprises the airtight cylinder, wherein a back-flushing device is arranged at the top of the airtight cylinder; a mud discharging channel is formed in the bottom of the airtight cylinder; a water inlet is arranged in the side near the bottom end of the airtight cylinder; a water outlet is arranged in one side near the top end of the airtight cylinder; the membrane carrier connected respectively with the back-flushing device and the water inlet is arranged in the airtight cylinder; a cyclone pipe communicated with the water inlet is arranged at the bottom end in the airtight cylinder. The method is simple in treatment technology, small in occupied area, low in cost, high in efficiency and great in energy-saving effect.

The present invention relates to environment friendly microwave dielectric ceramic for dielectric resonator, filter, vibrator and other microwave elements and devices in Ku band satellite communication system. The microwave dielectric ceramic contains ZrO2, SnO2 and TiO2 as well as micro additives ZnO, La2O3, Co2O3, CuO, SiO2, etc. It is prepared through mixing the materials, ball milling, calcining, crushing, pelletizing, forming, sintering and other steps. It features the low sintering temperature resulting in low power consumption, medium dielectric constant, high quality factor and temperature stable resonant frequency.

The invention provides a method for oxidizing sulfilimine into sulfoximide. The method comprises the following steps: preparing a tungsten oxide WO3-x nanosheet catalyst, and carrying out WO3-x nanosheet catalyzed oxidation of sulfilimine. The method has the advantages of simple reaction conditions, no pollution in the whole reaction steps, low cost, important industrial application values, and important environmental and social significance.

The invention relates to the field of preparation of glass coated target materials, in particular to a glass coated target material and a preparation method thereof, which solve the problem of preparation of magnetron sputtering glass coated target materials. The glass coated target material is prepared from SiAl powder serving as a raw material which is prepared by mechanically mixing pure Si powder and pure Al powder, wherein the mixed powder comprises 85 to 95 weight percent of Si powder with particle diameter of between 45 and 125 mu m and 5 to 15 weight percent of Al powder with particlediameter of between 30 and 100 mu m. The glass coated target material is prepared by atmospheric plasma spray coating technology; and the preparation process parameters are that: the current is 400 to 500A, the voltage is 45 to 58V, the powder feed rate is 40 to 60g/minute, the powder feed air flow is 5.0 to 7.0L/minute, the main air flow is 41 to 43L/minute, the main air pressure is 0.45 to 0.55MPa, the secondary air flow is 1.6 to 2.8L/minute, the secondary air pressure is 0.25 to 0.35MPa, the spray coating distance is 100 to 150mm, and the spray coating angle is 75 to 90 degrees. The sputtering cathode target material prepared by the method is suitable for production of coated glass and has great industrial application value.

The invention relates to a method for resolving racemic alpha-hydroxy esters by adopting alpha-hydroxy acid oxidase and belongs to the field of bioengineering. The method can be applied to the preparation of optically-pure alpha-hydroxy esters.

The invention provides a high-performance ceramic material. The material is prepared from mMO-yLn2O3-zTiO2 and metal nano-grade additives, wherein M includes Ba and one or two of Ca and Sr; Ln includes La and one or more of Sm, Pm, Nd, Pr and Eu; the metal nano-grade additive includes Zn and one or more of Zr, Sn, Mg, Ni, Co and W; and the sum of x, y and z is 1. The invention further provides a preparation method of the ceramic material. The microwave medium ceramic material has a dielectric constant of 46-48, a relatively high quality factor of 35000-50000GHz, and has the resonance frequencytemperature coefficient being adjustable between negative 12-12ppm/DEG C.