37results about How to "Solve the preparation process" patented technology

The invention discloses a method for reducing a silicone etching loading effect. The method comprises the following steps of (1) forming a groove hard mask layer image, (2) enabling a silicon substrate to espouse in a zone with large opening area and keeping part of dielectric films in a zone with small opening area, (3) growing silicone in the zone with the large opening area and growing no silicon in the zone with the small opening area, and (4) conducting groove etching to form a final groove image. The dielectric films like silicon oxide and silicon nitride are kept in the zone (the zone with the small opening area) where etching speed is low, mono-crystalline silicon is exposed in the zone (the zone with the large opening area) where the etching speed is fast, the silicone is grown in the zone with the large opening area by the utilization of a selective epitaxial method, the compensation dosage of the grown silicon is worked out according to etching load to enable the final depths, in zones with different opening area, of groove structures to be the same so as to improve the etching loading effect, and therefore the problems of buried layer connection of bipolar transistors and manufacturing technology of optical branching devices are solved, and physical structures of grooves are realized.

The invention discloses an O-shaped rubber seal ring service life prediction method based on multivariate sample differences. The O-shaped rubber seal ring service life prediction method comprises the specific steps that a multivariate nonlinear Wiener process degradation model of an O-shaped rubber seal ring is established; parameter variable function models are established, including data statistics and analysis and the function relation of parameters and stresses; a reliability service life calculation model is established; unknown parameters are calculated; the storage life of the O-shaped rubber seal ring is predicted under normal temperature and stress. The differences of sample individuals of O-shaped rubber seal rings are considered, mean values and standard deviations of drift coefficients, diffusion coefficients and Copulas parameters in the Wiener process are processed into variables, and the variables and an acceleration stress form a function relation, so that final prediction results are more in line with the actual engineering situation and are more accurate.

The invention discloses a process for preparing Cinacalcet hydrochloride tablets or capsules and belongs to the technical field of medicinal preparations. The preparation process comprises performing dry-process granulation according to one formula; and tabletting or filling capsules by using three dosages according to a ratio. The in-vitro release of the Cinacalcet hydrochloride is characterized in that: 40 to 80 percent of Cinacalcet hydrochloride is released within 5 to 10 minutes; 80 to 90 percent of the Cinacalcet hydrochloride is released within 15 to 20 minutes; and 90 to 100 percent of Cinacalcet hydrochloride is released within 30 to 45 minutes. In the process, the procedures are simple and safety, the quality is controllable, the cost is low, and the production period is short. The process is suitable for large-scale industrial production.

The invention relates to a mesalazine enteric sustained-release tablet preparation method, and belongs to the technical field of medicine. According to the present invention, a mesalazine enteric sustained-release tablet core is prepared by using wet granulation and tableting, and the mesalazine enteric sustained-release tablet is prepared through enteric coating, wherein each tablet contains 1.2g of mesalazine.

The invention relates to synthesis of a polymer-based magnetodielectric material and a process for manufacturing an electronic device, one of high-density polyethylene, polypropylene, polyfluortetraethylene, syndiotactic polystyrene and the like with low electromagnetic loss is specifically adopted, a surfactant, a compatibilizer, soft magnetic material powder with a certain particle size and magnetic loss, dielectric material powder with a certain particle size and dielectric loss, a left-hand effect material or photonic crystal material and other specific functional materials are added, high-temperature melting and mixing are performed in an internal mixer, cooling and crushing are further performed, granulation is performed for preparing modified plastics, and the electronic device is further manufactured according to the following flow path and process: injecting into the shape of a sheet or a rod, and further performing surface selective metallization, ultraviolet curing or hot-melt adhesive low-pressure injection packaging. The device manufactured by the material and the process is mainly used for miniaturized antennas. The device has a series of characteristics of wide frequency band, low impedance, deviation of a working frequency to low frequency band, special frequency selectivity and the like.

Disclosed is an electronic product frame integrally-formed structural part. The electronic product frame integrally-formed structural part comprises a carbon fiber sheet material outer frame made from carbon fiber sheet materials and a metal inner frame made from metal, wherein the carbon fiber sheet material outer frame and the metal inner frame are integrally formed into one body through an injection molding carbon fiber resin composite material. The manufacturing method for the electronic product frame integrally-formed structural part comprises the steps of manufacturing the carbon fiber sheet material outer frame; manufacturing the metal inner frame; and putting the carbon fiber sheet material outer frame and the metal inner frame into an injection molding die, and enabling the carbon fiber sheet material outer frame and the metal inner frame to be combined and formed into one body through the injection molding carbon fiber resin composite material. By adoption of the electronic product frame integrally-formed structural part and the manufacturing method therefor, light and thin overall machine structure, high strength, low weight, and high forming precision can be realized, so that the frame body complex structure can be realized by a simple process in a low-cost and high-quality manner.

The invention provides a soft-packed battery heat control device, particularly relates to the soft-packed battery heat control device capable of being soaked in cooling water and provides a corresponding package material in allusion to the defect of low corrosion resistance of the battery package material in the prior art. The package material is formed by an aluminum foil layer with resistance to corrosion of cooling water and a plastic layer on the surface of the aluminum foil layer.

The invention relates to an optical imaging system, an imaging module, an electronic device and a driving device. The optical image capturing system includes, in order from an object side to an imageside along an optical axis, a first lens group having negative refractive power; a second lens group having positive refractive power; a third lens group having positive refractive power; a fourth lens group having positive refractive power; and a diaphragm provided on the object side of the third lens group. According to the optical imaging system, the lenses in the system are grouped, so that the system can give consideration to a wide viewing angle and high resolution capability, and has the characteristic of miniaturization.

The invention discloses a preparation technology of a Cinacalcet hydrochloride solid dispersion tablet, and belongs to the technical field of preparation of medicinal preparations. The technology is characterized in that the Cinacalcet hydrochloride solid dispersion tablet is prepared through a solid dispersion process and a powder direct tabletting process. The in vitro dissolution rate of Cinacalcet hydrochloride is characterized by 40-80% at 5-10min, 80-90% at 15-20min and 90-100% at 30-45min. The technology has the advantages of simple process, safety, controllable quality, low cost, short production cycle, and suitableness for large-scale industrial production.

The invention discloses a method for manufacturing a GaAs-based MHEMT device with grid length of 200nm, which comprises the following steps: preparing source and drain electrodes on an epitaxial structure of an MHEMT material; corroding and isolating an active area on the epitaxial structure of the MHEMT material with the prepared source and drain electrodes to form an isolated table top; adopting a thee-layer gluing process and manufacturing a T-shaped grid of 200nm by using electron beam lithography technology, adopting citric acid solution to corrode a grid groove, and evaporating Ti / Pt / Au as grid metal; and photoetching wiring, evaporating the wiring metal Ti / Pt / Au, and carrying out acetone soaking and peeling to finish the manufacture of the GaAs-based MHEMT device with the grid length of 200nm. The method manufactures the GaAs-based MHEMT device with the T-shaped grid structure, obtains superior direct current, high frequency and power performances, and lays a foundation for further researching the high-performance GaAs-based MHEMT device.

The invention discloses a travelling wave tube collector needle and a processing technology thereof. The process comprises the following steps of: 1, preparing materials; 2, lathing; 3, lathing; 4, electrosparking; 5, milling; 6, benching; 7, lathing; 8, benching; 9, de-oiling by trichloroethylene; 10, chemically de-oiling; 11, chemically polishing; 12, detecting; 13, electrosparking; 14, detecting; 15, de-oiling by trichloroethylene; 16, washing by acid; 17, washing by de-ionized water; and 18, packaging. Using the above technical scheme, the manufacturing technology problem of electronic devices with more complex shapes, high processing difficulty and high processing requirements is solved, the quality of product is ensured and the technical requirements of the travelling wave tube on the collector needle are satisfied.

The invention discloses an electronic device's waterproof and drop-proof shell and its preparation method. The shell comprises a carbon fiber sheet structure, an injection molding structure integrally formed on the back surface and the periphery of the carbon fiber sheet structure, a soft rubber protection structure integrally formed on the front surface of the carbon fiber sheet structure, and a silicone waterproof structure integrally molded on the injection molding structure. The carbon fiber sheet structure is integrated with the injection molding structure to form a shell structure with a fixed appearance; a portion of the injection molding structure wraps the peripheral side of the carbon fiber sheet structure while the other portion of the injection structure forms an assembly structure on the back surface of the shell structure; the silicone waterproof structure is formed on the assembly structure so that when the assembly structure is assembled with corresponding structural parts, watertight sealing can be achieved for the elasticity of the silicone waterproofing structure and the interference fit of corresponding assembly components. As a result, it is possible to provide an electronic product shell which is thin in thickness, high in strength, light in weight, capable of realizing its complex structure with a simple process, and has excellent drop resistance and water resistance.

The invention relates to a flexible fiber medicine box capable of intelligently releasing medicines, and preparation and application of the flexible fiber medicine box. The preparation process of the medicine box comprises the steps that firstly, a pore-foaming agent and a high-molecular polymer are sequentially added into an organic solvent, the pore-foaming agent and the high-molecular polymer are evenly mixed to serve as a spinning solution to carry out electrostatic spinning, and a nanofiber membrane is prepared; then, the nanofiber membrane is put into a Tris-hydrochloric acid buffer solution containing dopamine to be subjected to modification treatment, and the nanofiber membrane modified by polydopamine is obtained; then, the nanofiber membrane modified by the polydopamine is put in a mixed solution for grafting reaction to obtain a fiber membrane loaded with a switch; and finally, the fiber membrane loaded with the switch is cleaned and dried to obtain the flexible fiber medicine box. The medicine box comprises porous fibers, and PMAA is chemically grafted at holes on the porous fibers. The prepared medicine box is subjected to medicine carrying treatment, and then a medicine release test is performed: the medicine box does not suddenly release within the first 4-6 hours in an environment with the pH value of 7.0-7.4, and ta medicine release amount is gradually increased along with reduction of the pH value of the medicine release environment.

The invention provides a method for improving the etching uniformity of a high aspect ratio tungsten alloy. The method comprises: growing a hard mask on a tungsten alloy substrate; carrying out spin coating of a first layer photoresist on the hard mask, and carrying out photoetching and developing to form a first layer photoresist pattern; etching the hard mask according to the first layer photoresist pattern to form a hard mask pattern; carrying out spin coating of a second layer photoresist, and carrying out photoetching and developing to form a second layer photoresist pattern; carrying outfirst tungsten alloy etching according to the second layer photoresist pattern, wherein the etching depth on the tungsten alloy substrate having a small opening area achieves a load effect amount; and removing the remaining second layer photoresist, and carrying out second tungsten alloy etching according to the hard mask pattern, such that the etching depth on the tungsten alloy substrate havinga small opening area and the etching depth on the tungsten alloy substrate having a large opening area are the same.

The invention relates to a soft-pack battery thermal control device, in particular to a soft-pack battery thermal control device which can be soaked into cooling water. Furthermore, in view of the defect that the anticorrosion performance of packaging materials for batteries is not inadequate in the prior art, the invention provides a corresponding packaging material; the packaging material is made from an aluminum foil layer resistant to cooling water corrosion and a plastic layer arranged on the surface of the aluminum foil layer.

The invention relates to an imaging lens, an image capturing device, an electronic device and a driving device. The imaging lens comprises, sequentially from an object side to an image side along an optical axis, a first lens element with negative refractive power ; a second lens element with positive refractive power; a third lens element with negative refractive power; a fourth lens with refractive power, the object side surface and the image side surface being convex surfaces; the fifth lens with refractive power, the object side surface and the image side surface being concave surfaces; a sixth lens element with positive refractive power; a seventh lens with refractive power, the image side surface being a convex surface; and a diaphragm arranged on the object side of the fourth lens. The imaging lens can be miniaturized while having high resolution capability, and is low in cost and suitable for batch production.

The invention provides a 6000m-level underwater micro-camera. The working depth is 6000m. According to the micro-camera, a watertight head, a rear end cover, a micro-camera cylinder and a glass observation window are pressure-resistant parts, and mutual sealing is carried out through rubber seal rings. The rear end cover and the micro-camera cylinder are made by processing high-strength light anticorrosive materials. The glass observation window is made by processing high-strength transparent glass. The integral size of the camera is small, so the camera can be arranged on a submersible conveniently. An image processing circuit board is used for carrying out postprocessing on an underwater video, and the distortion of the underwater video is reduced as much as possible. According to the micro-camera, low-voltage direct current input is employed, and the production and a technology of high-strength pressure-resistant structure materials and the high-transparency optical observation window, a highly integrated CCD imaging technology, a high-pressure sealing and anti-corrosion technology and an underwater low-illumination signal resolution technology are solved. Good video monitoring signals are provided for the submersible such as a great-depth ROV.

Provided in the inventio is a dining table comprising a table plate and foldable foot stools. The table plate comprises two panels which can be folded in half; the two panels are both of an integrally-formed structure; after the two panels are in butt joint, a through hole formed in the middle of the table plate and a plurality of dining areas distributed around the through hole and lower than theedge of the table plate are formed on the table plate; the adjacent dining areas are separated by boss areas higher than the tabletop of the dining areas, and a plurality of grooves are formed in each boss area. And the two panels are in butt joint between the grooves of the two opposite boss areas, namely, a complete through hole and two complete boss areas provided with a plurality of grooves are formed at the butt joint position after the two panels are in butt joint. Therefore, soup and the like cannot flow into the gap at the butt joint due to blocking of the boss areas, so that a problem of soup leakage is solved. Meanwhile, the groove is used for reducing stretching, so that the product is easy to form and the strength is not weakened. The portable dining table is reasonable in layout, good in dining comfort, convenient to carry outdoors and particularly suitable for eating lobsters and other food with many shells.

The invention discloses a preparation method of Wenxin Formulation, which relates to a preparation method of a traditional Chinese medicinal composition for treating the syndrome of heart-qi insufficiency and solves the problem in the prior art that there is no a pharmaceutical preparation process for Wenxin Formulation. The method comprises (1) taking white ginseng, cassia twig, Trichosanthes kirilowii, Allium macrostemon, Ternate pinellia, Paeonia lactiflora, Ophiopogon japonicas and Coptis chinensis, reflux-extracting with ethanol, and cooling and then filtering the extraction liquid; (2) adding ethanol into the extraction residues for reflux-extraction, cooling and then filtering the extraction liquid, adding ethanol into the extraction residues again for reflux-extraction, mixing all the filtrates, recovering the filtrates under reduced pressure, concentrating until no ethanol smell is detected, evaporate to dryness in an evaporating dish, and then vacuum-drying. The preparation method of Wenxin Formulation (a traditional Chinese medicinal composition for treating the syndrome of heart-qi insufficiency), disclosed in the invention, has a simple and convenient process, conforms to the requirements in real production, and solves the problem in the prior art that there is no a pharmaceutical preparation process for Wenxin Formulation. The prepared Wenxin Formulation has definite efficacy on the syndrome of heart-qi insufficiency, and the total effectiveness reaches 90.8%.

Provided are a resistive non-volatile memory device and a manufacturing method thereof. The manufacturing method comprises the following steps: providing a substrate on which a lower electrode layer, a resistance conversion layer, an upper electrode layer and a first mask are formed; forming an interlayer dielectric layer above the substrate; forming a second mask on the interlayer dielectric layer; etching the interlayer dielectric layer with the second mask as an etching mask to form an opening which exposes the first mask; forming a gap wall layer on the bottom and the side wall of the opening; removing the gap wall on the bottom of the opening; and performing isotropic etching and removing part of the first mask in the opening. By adopting the method of the invention, problems related to the manufacturing process of the resistive non-volatile memory device can be solved, and higher reliability can be obtained.

A resistive non-volatile memory device and a manufacturing method thereof, the manufacturing method comprising: providing a substrate, wherein the substrate includes a lower electrode layer, a resistance switching layer, an upper electrode layer and a first mask; forming a layer The interlayer dielectric layer is above the substrate; forming a second mask on the interlayer dielectric layer; using the second mask as an etching mask, etching the interlayer dielectric layer to form an opening exposing the first mask ; forming a spacer layer on the bottom and sidewalls of the opening; removing part of the spacer layer on the bottom of the opening; performing an isotropic etching to remove part of the first mask in the opening. The invention can solve the problems related to the manufacturing process of the resistive non-volatile storage device and obtain better reliability.

The invention discloses an electronic device's waterproof and drop-proof shell and its preparation method. The shell comprises a carbon fiber sheet structure, an injection molding structure integrally formed on the back surface and the periphery of the carbon fiber sheet structure, a soft rubber protection structure integrally formed on the front surface of the carbon fiber sheet structure, and a silicone waterproof structure integrally molded on the injection molding structure. The carbon fiber sheet structure is integrated with the injection molding structure to form a shell structure with a fixed appearance; a portion of the injection molding structure wraps the peripheral side of the carbon fiber sheet structure while the other portion of the injection structure forms an assembly structure on the back surface of the shell structure; the silicone waterproof structure is formed on the assembly structure so that when the assembly structure is assembled with corresponding structural parts, watertight sealing can be achieved for the elasticity of the silicone waterproofing structure and the interference fit of corresponding assembly components. As a result, it is possible to provide an electronic product shell which is thin in thickness, high in strength, light in weight, capable of realizing its complex structure with a simple process, and has excellent drop resistance and water resistance.

The invention relates to a multi-rotor unmanned aerial vehicle design method. The multi-rotor unmanned aerial vehicle design method comprises the steps of firstly, using a computer three-dimensional drawing software to draw structural shapes of a central control box component and power box components according to design requirements and design dimensions; copying a model file into a memory chip pfa fused deposition modeling 3D printing machine to print a three-dimensional model into an entity part; according to the design requirements, using tool equipment to modify, polish and perforate theprinted central control box component and the printed power box components; fixing a pre-arranged flight control board and a pre-arranged receiving machine on a flight control component base by usingadhesive; well connecting cables of the flight control board and the receiving machine and fixing the cables of the flight control board and the receiving machine by using binding straps; bonding a battery pack on the other side of the flight control component base by using a hook and loop and firmly fixing the battery pack by using a magic strap; inserting a battery power supply wire in a distributor plate on the box; fixing the distributor plate in a central control box in a glued manner; arranging wires to connecting blocks along force bearing strips and supplying power to the flight control board by using a voltage regulator; and assembling selected motors and rotors, and fixing the motors and the rotors on motor bases by using bolts. The multi-rotor unmanned aerial vehicle design method has the characteristics of rapid volume production, rapid assembling, high utilization rate of each part and the like.

The invention provides an optical system, an image capturing module, an electronic device and a driving device. The optical system comprises, in order from an object side to an image side along an optical axis: a first lens element with negative refractive power, a second lens element with negative refractive power, a third lens element with positive refractive power, a diaphragm, a fourth lens element with negative refractive power, a fifth lens element with positive refractive power, a sixth lens element with positive refractive power, a seventh lens element with negative refractive power, and an eighth lens element with refractive power. The optical system can give consideration to the characteristics of high pixel, high image quality and miniaturization when a specific relationship issatisfied.

The invention provides a method for improving the etching uniformity of a high aspect ratio tungsten alloy, the steps comprising: growing a hard mask on a tungsten alloy substrate; spin-coating a first layer of photoresist on the hard mask; , form the first layer of photoresist pattern; etch the hard mask according to the first layer of photoresist pattern to form a hard mask pattern; spin coat the second layer of photoresist, and form the second layer through photolithography and development Photoresist pattern; perform the first tungsten alloy etching according to the second layer of photoresist pattern, and the depth of etching on the tungsten alloy substrate in the area with a small opening area reaches the load effect amount; remove the remaining second layer of photoresist Resist, perform the second tungsten alloy etching according to the above hard mask pattern, so as to etch to the same depth on the tungsten alloy substrate in the larger and smaller opening area.

The invention discloses a preparation method of Wenxin Formulation, which relates to a preparation method of a traditional Chinese medicinal composition for treating the syndrome of heart-qi insufficiency and solves the problem in the prior art that there is no a pharmaceutical preparation process for Wenxin Formulation. The method comprises (1) taking white ginseng, cassia twig, Trichosanthes kirilowii, Allium macrostemon, Ternate pinellia, Paeonia lactiflora, Ophiopogon japonicas and Coptis chinensis, reflux-extracting with ethanol, and cooling and then filtering the extraction liquid; (2) adding ethanol into the extraction residues for reflux-extraction, cooling and then filtering the extraction liquid, adding ethanol into the extraction residues again for reflux-extraction, mixing all the filtrates, recovering the filtrates under reduced pressure, concentrating until no ethanol smell is detected, evaporate to dryness in an evaporating dish, and then vacuum-drying. The preparation method of Wenxin Formulation (a traditional Chinese medicinal composition for treating the syndrome of heart-qi insufficiency), disclosed in the invention, has a simple and convenient process, conforms to the requirements in real production, and solves the problem in the prior art that there is no a pharmaceutical preparation process for Wenxin Formulation. The prepared Wenxin Formulation has definite efficacy on the syndrome of heart-qi insufficiency, and the total effectiveness reaches 90.8%.

The invention belongs to the technical field of functional hydrogel materials, and discloses ultraviolet light blocking type hydrogel containing immobilized nanoparticles and a preparation method of the ultraviolet light blocking type hydrogel. A redox initiator formed by nano iron oxide oxidized by zero-valent iron particles and persulfate is adopted to initiate microemulsion polymerization of a monomer with an ultraviolet light blocking function and a carboxyl-containing monomer in the hydrogel to form nano particles with ultraviolet light blocking performance, and EDC / NHS is utilized to realize immobilization of the nano particles in the hydrogel. The zero-valent iron nanoparticles can slowly provide Fe < 2 + > as a slow-release agent to form a redox system with the persulfate after being oxidized, so that the nanoparticles with a light barrier effect are ensured to be formed in the hydrogel under a relatively mild condition, and the curing condition in the next step is relatively mild and is unlikely to damage the hydrogel structure. According to the hydrogel and the method of the invention, the nano particles with the ultraviolet light barrier performance are fixed in a hydrogel system through EDC / NHS, so that the problems of overflow and agglomeration of the nano particles after long-term use are solved.

The invention relates to an alternanthera bettizickiana flowerbed using straw as matrix, and relates to an alternanthera bettizickiana flowerbed. In order to solve the problems of complicated process,high labor consumption and high cost in the preparation of the existing alternanthera bettizickiana flowerbed, the alternanthera bettizickiana flowerbed using straw as matrix is composed of a support, a straw matrix layer, a filter layer and a container tray, wherein the container tray is arranged on the support, the filter layer is arranged at the bottom of the container tray, and the straw matrix layer is arranged on the upper surface of the filter layer; and the straw matrix layer is composed of a pattern woven from straw. The invention solves the problems of the manufacturing technology and the quality of the alternanthera bettizickiana flowerbed, saves the labor cost and creates the economic value. As that process of the embodiment is simple, labor is saved and the cost is low. The invention is suitable for preparing the alternanthera bettizickiana flowerbed.