1095results about How to "Efficient preparation method" patented technology

A sterile method for preparing stable thrombin component from a single donor's plasma in which the thrombin component is harvested simultaneously from the clotting and adhesive proteins component from the same donor plasma in less than one hour. The combined components provide an improved biological hemostatic agent and tissue sealant by virtue of its freedom from the risk of contaminating viruses or bacteria from allogenic human or bovine blood sources. The thrombin provides polymerization of the clotting and adhesive proteins in less than five seconds, and is sufficiently stable to provide that fast clotting over a six hour period. Further, the clotting times can be predictably lengthened by diluting the thrombin with saline.

The invention provides a wide-temperature full methanation catalyst and a preparation method thereof. The methanation catalyst is characterized in that: nickel is used as a main active ingredient, a composition formed by zirconium oxide and one or more of aluminum oxide and nickel-aluminum compounds is used as a main carrier, and lanthanum oxide is used as a cocatalyst; and a catalyst precursor is prepared by using a chemical precipitation process, and the catalyst precursor is reduced into the catalyst by filtering, washing, roasting, forming and re-roasting. The methanation catalyst has excellent catalytic activity and stability in a use range of between 260 and 750 DEG C, and fully meets the requirements of a full methanation process of synthesis gas on high temperature resistance, high hydrothermal stability and low-temperature high activity of the catalyst.

The invention discloses an arc battery cell, an arc single cell, an arc cell combination structure and a manufacturing method. According to the invention, the battery cell is required to be bent in the perpendicular direction of a connecting line of opposite open ends, the limit in the arc bending direction is performed, so that the external bending acting force cannot damage an internal structure of the battery, the defects of internal short circuit, increase of the internal resistance, reduction of capacity, unstable size and the like cannot be caused, and the batch production of cells is easy to realized. The bending degree of the battery cell is larger, and the manufactured single cell and cell combination structure can be combined and matched variously, so that diversified designs of the cell product are achieved. The manufacturing method of the battery cell is obtained by adjusting a conventional manufacturing method of the cell, the cell is not required to be heated during bending, and accordingly, the manufacturing method is simpler, practical, efficient and low in manufacturing cost.

The invention discloses an aluminum silicon carbide composite material with a laser welding layer and a preparing method of the aluminum silicon carbide composite material. The composite material is composed of the laser welding layer and an aluminum silicon carbide layer, the laser welding layer is composed of pure aluminum or aluminum alloy comprising silicon and aluminum, the volume fraction of the silicon in the aluminum alloy is a, the volume fraction of the aluminum in the aluminum alloy is b, the a is greater than 0 and less than or equal to 30%, and the b is greater than or equal to 30% and less than 100%. The aluminum silicon carbide layer is composed of silicon carbide and pure aluminum or aluminum alloy, and the volume fraction of the silicon carbide ranges from 30% to 70%. The preparing method comprises the steps that silicon carbide pelleting powder is prepared firstly, then silicon carbide preformed parts are prepared, and the aluminum silicon carbide composite material with the laser welding layer is prepared in the vacuum pressure impregnation method finally. The aluminum silicon carbide composite material is good in weldability and gas tightness, high in heat conductivity, low in coefficient of thermal expansion, simple in preparing method, efficient and low in cost.

A semiconductor device manufacturing method includes, forming isolation region having an aspect ratio of 1 or more in a semiconductor substrate, forming a gate insulating film, forming a silicon gate electrode and a silicon resistive element, forming side wall spacers on the gate electrode, heavily doping a first active region with phosphorus and a second active region and the resistive element with p-type impurities by ion implantation, forming salicide block at 500° C. or lower, depositing a metal layer covering the salicide block, and selectively forming metal silicide layers. The method may further includes, forming a thick and a thin gate insulating films, and performing implantation of ions of a first conductivity type not penetrating the thick gate insulating film and oblique implantation of ions of the opposite conductivity type penetrating also the thick gate insulating film before the formation of side wall spacers.

The invention discloses an ultra-small MoS2 nanosheet. The surface of the MoS2 nanosheet is modified with polyvinylpyrrolidone, and the diameter of the modified MoS2 nanosheet ranges from 15 nm to 25 nm. The invention further discloses a preparation method of the ultra-small MoS2 nanosheet. The preparation method comprises the following steps: a sulfur source and a molybdenum source are dissolved in water and stirred until the resources are completely dissolved; polyvinylpyrrolidone is dissolved in the solution of the sulfur source and the molybdenum source; the solution is transferred into a stainless steel reaction kettle with a polyphenyl lining for closed reaction, a reaction product is washed with an ethanolamine water solution and distilled water, and the ultra-small MoS2 nanosheet with the surface modified with polyvinylpyrrolidone is obtained. The invention further provides an application of the ultra-small MoS2 nanosheet as a photo-thermal conversion material. The ultra-small MoS2 nanosheet has good colloid stability, photo-thermal conversion capacity and photo-acoustic imaging capacity and has broad application prospect in the fields of tumor treatment and the like.

An RFID tag which is provided with a coil-shaped antenna such that a conductor is placed on the periphery of a magnetic core, the RFID comprising: the magnetic core, an FPC wound on the periphery of the magnetic core, two or more linear conductor patterns formed in parallel with one another on the FPC,an IC that is connected to the linear conductor patterns and disposed on the FPC, a crossover pattern that electrically connects one end and the other end of outermost linear conductor patterns among the linear conductor patterns formed in parallel with one another, where in the two or more linear conductor patterns, adjacent linear conductor patterns in a joint portion in the wound FPC are electrically connected in respective start edges and end edges.

The invention relates to the technical field of high-precision part machining process, in particular to a machining technology for a high-precision outer conical surface thin wall sleeve. The machining technology includes the following technology processes of workblank preparing, spheroidizing annealing, rough turning, thermal refining, semi-finish turning, finish turning, hole drilling, distressing, plane grinding, rough grinding, secondary distressing, plane grinding, spiral groove turning, plane lapping, accurate grinding, wire-electrode cutting, end face turning, serial number engraving, detecting, qualified product obtaining, press fitting, conical surface fit detecting, part matching and serial number printing, cleaning, lubricating oil coating and warehousing. A double-end vertical type numerical control grinder is adopted as a finishing machine, and through the machining methods of rough grinding and accurate grinding or rough grinding, semi-accurate grinding and accurate grinding, the technical requirements of the high-precision outer conical surface thin wall sleeve can be met; through the corresponding distressing heating processing technology, residual stress in the machining process is removed, deformation in the machining process can be reduced, the yield of products is improved, and finally the good manufacturing method of the high-precision outer conical surface thin wall sleeve is provided.

Provided are a 4-position substituted pyrazolopyrimidine derivative having a structure represented by formula I, and a use thereof in drug preparation. The pyrazolopyrimidine derivative is used for preparing a kinase inhibitor, a drug for treating an autoimmune disease, an angiogenesis inhibitor, and an antitumor drug.

The invention relates to a preparation method of graphene composite nonwoven cloth. The preparation method comprises the following steps: A1, preparing nonwoven cloth from common fiber; A2, mixing a graphene raw material with active carbon, water, an antioxidant, stearate and glue, and uniformly stirring the materials to form spraying liquid; A3, uniformly spraying the spraying liquid formed in Step A2 onto the nonwoven cloth prepared in Step A1, and drying and rolling the nonwoven cloth to prepare the graphene composite nonwoven cloth. The preparation method has the following beneficial effects: 1, the graphene-containing spraying liquid is sprayed onto the common nonwoven cloth, so that the long-acting anti-mite, antibacterial and antiultraviolet graphene composite nonwoven cloth havinga far infrared effect can be obtained; 2, the preparation method disclosed by the invention is simple and efficient, and can be widely applied to industrial production to prepare facial mask cloth, antibacterial costumes, antibacterial underwear, antibacterial socks, gauze masks, bedroom supplies and the like.

The invention belongs to the technical field of chemical engineering, and particularly relates to emulsified paraffin for wood processing and a preparation method thereof. The emulsified paraffin for wood processing is prepared from paraffin, a compound emulsifier and water, wherein the compound emulsifier is a mixture of a Span type surfactant, a Tween type surfactant, alkylphenol polyoxyethylene and alcohol. The emulsified paraffin disclosed by the invention is non-toxic and tasteless, good in dispersibility, good in stability, acid-resistant and alkali-resistant; in the wood processing industry, the emulsified paraffin can completely substitute paraffin to be used as a waterproof and dampproof auxiliary, and is simple to use, low in cost and good in effect, compared with the paraffin; the preparation method is simple and feasible; the three wastes cannot be generated in the preparation process; the preparation method is environment-friendly and efficient.

A mandrel for producing a fiber-reinforced composite part, in particular a blade for a wind turbine is disclosed. The mandrel includes an expandable body with an outer surface onto which a fiber material of the fiber-reinforced composite part is layable out. The expandable body is expandable in an expanded state, wherein in the expanded state the outer surface forms an interior shape of the fiber-reinforced composite part to be produced. Moreover, the expandable body is collapsible in a collapsed state.

The invention provides a grease composition comprising medium-long carbon chain triglycerides. In composition of fatty acids, the contents of medium carbon chain fatty acids and long carbon chain fatty acids reach more than 99%, the content of short carbon chain fatty acids is less than 1%, and the mass ratio of the long carbon chain fatty acids to the medium carbon chain fatty acids is 1.2: 1 to3:1; in the sn-2 position, the grease composition contains the medium carbon chain fatty acids and the long carbon chain fatty acids; the content of saturated fatty acids in the sn2 position reaches more than 60%. In composition of the triglycerides, the mass ratio of the triglyceride containing a medium carbon chain fatty acid acyl group to all the triglycerides is 50-90%, the mass ratio of the triglyceride containing two medium carbon chain fatty acid acyl groups to all the triglycerides is 3-35%, and the mass ratio of the triglyceride containing three medium carbon chain fatty acid acyl groups to all the triglycerides is 0-10%. The grease composition has high oxidative stability, and the fat digestibility meets the needs of special populations such as infants.