324results about How to "Guaranteed fineness" patented technology

The invention provides a lead-free silver conductive paste used for positive electrode of solar battery and a preparation technique thereof. The paste comprises the following materials by weight percentage: 65 to 85 percent of silver powder, 2 to 8 percent of lead-free glass powder, 10 to 25 percent of organic carrier and 0.1 to 3 percent of additive. The paste adopts the lead-free glass powder of Si-B-Bi-Al-Ti-Zn-O series to replace the traditional lead-bearing glass powder; and the series glass powder has lower softening point, can lead the silver electrode to have good adhesive force after sintering, and ensures the silver electrode to be well contacted with a silicon substrate. In addition, zinc resinate is used as the additive in the invention, not only can well improve the printing performance of the paste, but also can improve the electrical property of the electrode.

The present invention relates to a photocurable material for 3D inkjet printing, and a preparation method thereof, and a printing method, wherein the photocurable material comprises, by weight, 50-98 parts of a monofunctional monomer, 1-50 parts of a linear nonionic water-soluble polymer, 0-20 parts of a polar organic solvent, 0.1-5 parts of a photoinitiator, and 0.5-10 parts of an auxiliary agent. According to the present invention, the photocurable material can be used for 3D inkjet printing so as to print the support part, wherein the support part can be removed in the water or the aqueous liquid so as not to affect the precision of the target 3D object; and the 3D printing method has advantages of simple in operation, energy saving, and no harm to human body.

The invention discloses a region-division-based three-dimensional reconstruction method for a texture image. The method comprises the following steps: reading texture image information, performing region division on the texture image to obtain texture division regions, and performing region grouping; calculating height values of pixels in the texture image to obtain three-dimensional texture points of the pixels in the texture image by adopting a method of shape from shading; calculating the color roughness of each texture division region, determining the sizes of triangular meshes of different division regions, reconstructing a triangular patch of each division region, and converting the texture image into a three-dimensional texture graph to realize the three-dimensional reconstruction of the texture image. According to the method, the microscopic three-dimensional geometric shape of the surface of a virtual object reflected by the texture image is better reconstructed; microscopic details of the texture image are ensured, and complexity in the three-dimensional reconstruction of the texture image is further lowered; different physical attributes can further be endowed to different regions according to region grouping, so that a foundation is laid for the tactile sensation of the texture image.

The invention discloses a display panel and a display device, and the display panel comprises a first display area which comprises a plurality of first repeating units arranged in an array; a second display area which comprises a plurality of second repeating units arranged in an array mode, wherein the first repeating units and the second repeating units each comprise a plurality of sub-pixels, the density of the sub-pixels of the second display area is smaller than that of the sub-pixels of the first display area, and the second repeating units and the first repeating units are the same in outline shape. According to the display panel provided by the embodiment of the invention, the pixel density of the second display areas is relatively reduced, so that the array wiring in the second display area is reduced, the diffraction phenomenon of the wiring to incident light is reduced, the integration of the photosensitive module at the second display area is facilitated, and the non-display area of the display panel is reduced. The second repeating units and the first repeating units are the same in outline shape, so that the sub-pixels in the first display area and the sub-pixels in the second display area can be formed by using the same mask plate, and the design cost is reduced.

The present invention relates to the preparation process of one kind of superfine green tea powder. The preparation process includes spreading fresh tea, steam deactivating enzyme, hot blast dewatering, kneading, re-drying, coarse crushing and final superfine crushing. The steam deactivating enzyme and the hot blast dewatering reduce the water content of tea to 58-62 %, and kneading has one cell breaking rate of 10-15 %. The said preparation process can maintain the emerald of tea, and has fast water elimination and reduced loss of tea inclusion.

The invention belongs to the technical field of novel materials, particularly relates to a novel anti-radiation material and gloves made from the novel anti-radiation material, wherein the novel anti-radiation material comprises components with weight by percentage: nanometer bismuth oxide 55-73%, aluminum fluoride 20-35%, lanthanum trioxide 3-10%, nano tungsten trioxide 3-10%, fuller alcohol nanoparticles 1-2%. Anti-radiation gloves are prepared by adding the novel anti-radiation material into raw materials of latex gloves, and the novel anti-radiation material can keep flexibility and malleability of the latex gloves, and guarantees operation elaboration and safety of operators.

The invention belongs to the field of processing agricultural products, in particular to a method for processing golden mushroom root powder. In the method, fresh golden mushroom roots serving as a raw material undergo boiling, dehydration, drying, grinding and sterilization to prepare the golden mushroom root powder, wherein in the drying step, the two-step drying method is adopted, so that the golden mushroom roots can be fully dried without damaging nutritive matters. The method has the advantages that: the golden mushroom roots which are discarded in the processing of golden mushrooms are used as a raw material, the waste golden mushroom roots are recycled, the source is wide, and the cost is low; and by processing the golden mushroom roots into the golden mushroom root powder, the wastes are changed into the valuables, and the problem that the discarded golden mushroom roots pollute the environment is solved.

The invention relates to a method for preparing bean curd sheet rolls, wherein it comprises that using one time of grinding, two times of filters, additive composite phosphate, to improve yield and quality, and continuous feeding material to improve the ratio of first bean curd sheet rolls in shade yellow, using sealed far-infrared drier to replace traditional wind drying method, to obtain high dry speed.

The invention relates to the field of farming machines, in particular to an efficient deep ploughing machine tool with controllable ploughing depth. The efficient deep ploughing machine tool comprises a rack and a rotary tillage mechanism installed on the rack. Plough share sets with adjustable wedge-in angles are arranged on the portion, in front of the rotary tillage mechanism, of the rack in rows. The rack is connected to the tail of a tractor through an upper connecting rod and a lower connecting rod, a quadrilateral structure capable of moving in the vertical direction is formed by connecting parts of the rack and the tractor, and a jacking hydraulic cylinder is arranged in the middle of the quadrilateral structure. One end of the jacking hydraulic cylinder is connected to the position, close to an upper connecting rod connecting point, of the rack, and a cushioning device is arranged at the connecting end. The other end of the jacking hydraulic cylinder is connected to the tail of the tractor, and a stable triangular structure is formed by the jacking hydraulic cylinder and the upper connecting rod. By the adoption of the scheme, the efficient deep ploughing machine tool with controllable ploughing depth is simple in structure and convenient and rapid to operate, can effectively control the ploughing depth, and efficiently completes ploughing work at high quality.

The invention discloses a processing method of green tea powder. The method comprises the following steps: selecting materials, carrying out fixation by steam, rolling, drying, performing coarse grinding and superfine grinding. The tea is pretreated by fixation by steam, activity of oxidase is rapidly passivated, tea cells are crushed after the reasonable rolling, so that water of the tea is extruded of surface of the tea, the water loss is accelerated, and loss of nutrient substances in tea is reduced, the original nutritional ingredients, pharmacological ingredients, and natural color of raw materials are kept to the greatest extent for the processed green tea powder through a manner of combining coarse grinding and superfine grinding, so that the green tea powder has good dispersibility, and the fineness of the green tea powder is guaranteed.

The invention relates to a cold zinc-sprayed anticorrosion coating doped with modified graphene. The cold zinc-sprayed anticorrosion coating is prepared from, by weight, 50-80 parts of the modified graphene, 10-15 parts of polypropylene vinyl acetate, 20-38 parts of epoxy resin, 70-210 parts of zinc powder and 17-40 parts of talcum powder. The modified graphene is obtained in the mode that ion exchange is conducted to exchange vinyl benzyl in imidazole into the edge portion of grapheme, then polymerization with methylacrylic acid armour is conducted, and the obtained graphene polymethyl methacrylate composite material is the modified grapheme. The cold zinc-sprayed anticorrosion coating is applicable to offshore wind power facility protection in a marine environment, or used for long-term anticorrosion of onshore steel structures of inland tube diameters.

The invention relates to a hand-operated drug mill which comprises a milling groove and a milling disc, wherein the milling groove is arc-shaped long groove; the milling disc is a disc with a central opening; a milling disc shaft is mounted in the opening of the milling disc in a penetrating manner; the milling groove is arranged on the base; two guide plates are arranged on two sides of the milling disc on the base respectively; an arc-shaped guide sliding hole is formed on each of the guide plate and fits the shape of the milling groove; the two end parts of the milling disc shaft are mounted in the arc-shaped guide sliding holes on two sides respectively in a penetrating manner; a hand-operating handle is fixedly connected with one of the two end parts; a plurality of compression springs are arranged between the bottom end of the milling groove and the base. The hand-operated drug mill has the advantages of simple structure, time-saving labor-saving operation and good drug-milling effect.

The invention discloses a method of using a three dimensional reconstruction imaging technology to analyze the structure of root tip cells of arabidopis thaliana, and belongs to the field of cell structure analysis. According to the method, roots of arabidopis thaliana are subjected to a horizontal freezing slicing treatment to obtain root cross sections, which only contain the root caps, the thickness of the slice is only 10 [mu]m, and thus the influence of the resolution ratio of the Z axis of a microscope on the imaging reality is greatly reduced; by optimizing the conditions of microscopic photography, the shooting stepping is minimized to less than 0.4 [mu]m, the Pinhole value is reduced so as to ensure that the thickness of a calculated optical slice is less than 0.8 [mu]m, the fineness of the photos is guaranteed; the scanning range comprises the whole structure of a stele cell from top to bottom; a finer microscopic imaging picture can be obtained, the influence of stray light of non-focal planes on the images is effectively reduced, the image resolution ratio is improved, the structure of a studied object can be realistically represented; and by using the provided three dimensional reconstruction imaging technology, the intra-cell endoplasmic reticulum structure can be determined more directly and accurately.

The invention discloses a two-segment mineral grinding-classification process, it grinds the bauxite and lime in the rod mill, the grinded raw mine pulp is poured into a pump pool. The classified bottom flow after classified by water swirler is grinded in ball grinder, adjusts the best liquid and solid rate with proper alkali liquid, the discharged mine pulp is poured into the same pump pool, and adds in alkali liquid to maintain the solid content at 470-520g/L, and carries on classification to the compound mine pulp in the water swirler, the bottom flow enters the ball grinder to be grinded.

The invention discloses coated kraft paper and a production technology thereof. The coated kraft paper comprises a coated layer, a surface layer, a core layer, a bottom layer and a starch gluing layer, wherein the coated layer, the surface layer, the core layer, the bottom layer and the starch gluing layer are sequentially stacked together; the surface layer is bleached chemical wood pulp; the bleached chemical wood pulp comprises the following ingredients in percentage by weight: 20%-80% of bleached chemical hardwood pulp and 20%-80% of bleached chemical needle pulp; the core layer is mixed pulp; the mixed pulp comprises the following ingredients in percentage by weight: 30%-70% of ecru pulp and 30%-70% of mechanical pulp; and the bottom layer is 100% of ecru pulp. Because the coated kraft paper is manufactured by a three-layered net, 100% of native wood pulp is used, a front surface of the coated draft paper is a coating layer, the back surface of the coated draft paper is the starch gluing layer, the proportion of long fibers and short fibers of the pulp is reasonable, an efficient technological control means is adopted, and the strength of paper and the tenderness of paper surfaces can be guaranteed simultaneously.

The invention provides a processing technology and method of high-quality flour. The processing technology and the method comprise the following steps of material selecting and washing, dampening and wheat wetting, rough grinding and screening, and accurate grinding and screening. Wheat is treated by various procedures, original nutritional ingredients are kept in the ground flour and are not broken, the production process of the flour is effectively improved, and the nutritional ingredient loss during the processing and production process of the flour is greatly reduced, thereby further improving the taste quality of the flour; the processing technology and the method are suitable for being further popularized.