17results about How to "Improve formation efficiency" patented technology

Embodiments of the invention provide a write head for perpendicular recording in which the magnetic field intensity applied at a read element is reduced with larger write-field gradients and the distance between a write element and a read element is small. In one embodiment, a pair of magnetic bodies for shielding a read element are provided on the leading and trailing sides of the read element respectively and whichever one of the two shields is the longer in the length from the air bearing surface is shorter than the length up to the back contact position PBK at which a main pole and an auxiliary pole are connected.

The application provides an anode foil and a preparation method thereof. The preparation method comprises the following steps: providing an unformed foil, wherein the unformed foil comprises an aluminum foil base material and an aluminum powder sintering layer arranged on the surface of the aluminum foil base material; and sequentially performing the following processes on the unformed foil: water boiling, first-stage chemical conversion, second-stage chemical conversion, third-stage chemical conversion, power feeding treatment, fourth-stage chemical conversion, fifth-stage chemical conversion, first-stage heat treatment, first chemical conversion repair, first phosphoric acid treatment, second chemical conversion repair, second-stage heat treatment, third chemical conversion repair and second phosphoric acid treatment. The solutes of the electrolyte of the first-stage chemical conversion, the second-stage chemical conversion and the third-stage chemical conversion comprise citric acid, triammonium citrate, adipic acid, ammonium adipate, salicylic acid, hypophosphite, boric acid and ammonium salt, and the solvent is water. The solutes of the electrolyte of the fourth-stage chemical conversion and the fifth-stage chemical conversion comprise citric acid, triammonium citrate, sebacic acid, ammonium sebacate, salicylic acid, sodium hypophosphite, boric acid and ammonium salt, and the solvent is water. An anode foil prepared by the preparation method has a high specific capacity and a small hydration leakage current.

The invention discloses a residual oil hydrotreating catalyst and a preparation method thereof, and belongs to the technical field of catalytic materials. The preparation method comprises the following steps: S1, mixing dolomite, cerous carbonate, a zirconium oxide precursor and a silicon dioxide precursor, drying and calcining to obtain a composite carrier, and performing in-situ pore forming by utilizing gas generated by decomposition of the dolomite and the cerous carbonate to form a mesoporous structure; s2, dipping the composite carrier in a modification liquid containing chitosan and mannuronic acid, and constructing a cross-linked network coating on the surface of the composite carrier through a Schiff base reaction to obtain a modified carrier; s3, dipping the modified carrier in a precursor solution containing a nickel source, a molybdenum source and a sulfur source, and performing adsorption, drying and roasting to obtain the catalyst. Through the synergistic effect of pore structure regulation and surface modification, the carrier with high porosity and suitable pore distribution is obtained, and meanwhile, high dispersion and stable loading of active metal components are realized. The catalyst shows excellent hydrodesulfurization, denitrification and demetallization performance in residual oil hydrotreatment.

The invention discloses a high-altitude layering method for efficient rooting of carya illinoensis variety seedling branches, and belongs to the technical field of asexual propagation of carya illinoensis. According to the method, high-altitude layering is performed in the growth season of the carya illinoensis, and rooting is promoted; xylem tissue with the thickness of 1-3 mm at a girdling opening is cut off, so that the repair and differentiation process of wound tissue towards the cortex direction is effectively inhibited; the girdling opening is coated with a rooting agent, the forming efficiency and number of root systems are remarkably improved, finally, a matrix containing a certain amount of garden soil is adopted for wrapping to promote rooting, the technical problem that the carya illinoensis variety seedlings are difficult to root is solved, and batch production of the variety self-rooted seedlings is achieved. According to the method, the rooting rate can reach 90% or above, and the rooting number reaches 20 roots per branch or above.

The invention relates to the technical field of detection reagent preparation, and discloses a stable oxidized low-density lipoprotein cholesterol detection kit and a preparation method thereof.The kit is composed of a component R1 and a component R2, the component R1 at least comprises a buffer solution, a sensitizer, a surfactant, a stabilizer, an anti-interference agent and a preservative, and the component R2 at least comprises a buffer solution, a sensitizer, a surfactant, a stabilizer, an anti-interference agent and a preservative; the component R2 at least comprises an ion buffer solution, a stabilizer, a sealing agent, an antibody-carboxyl microsphere conjugate and a preservative; the antibody-carboxyl microsphere conjugate is a conjugate of an oxidized low-density lipoprotein antibody and carboxyl microspheres. According to the formula of the oxidized low-density lipoprotein reagent composition, the reagent R1 and the reagent R2, the production cost is effectively reduced, the oxidized low-density lipoprotein reagent composition can be used on a full-automatic biochemical analyzer, the automation degree is high, compared with similar products, the oxidized low-density lipoprotein reagent composition has higher accuracy, repeatability and stability, and unexpected technical effects are achieved.

A micro multi-color LED device includes two or more LED structures for emitting a series of color light. The two or more LED structures are vertically stacked to mix the light emitted by the two or more LED structures vertically and / or horizontally and reflect upward via some reflective structures. In some embodiments, each LED structure is connected with a pixel driver and / or a common electrode. The LED structures are bonded together by a bonding layer. In some embodiments, a planarization layer encloses each LED structure or the micro multi-color LED device. In some embodiments, one or more of a reflective layer, a refractive layer, a microlens, a spacer, and a light reflecting cup structure are implemented in the device to improve the LED light emitting efficiency. A display panel including an array of micro tri-color LED devices has high resolution and high illumination brightness.

The application discloses a coaxial multi-atmosphere water guide laser processing device, which comprises a laser generating module, a light-water coupling module, a protective gas flow generating module and a composite nozzle assembly. The light-water coupling module couples the water jet and the laser by total reflection to form a laser water jet. The protective gas flow generating module comprises a first protective gas flow generating module and at least one second protective gas flow generating module, and can generate multiple layers of coaxial protective gas flows. The first protective gas flow spirally surrounds the outside of the laser water jet, and the second protective gas flow further surrounds the outside of the first protective gas flow. The composite nozzle assembly is composed of a first nozzle and at least one second nozzle which are coaxially nested from inside to outside. Finally, the output is a coaxial composite jet composed of the laser water jet and the multiple layers of protective gas flows. The application solves the technical problems that are difficult to simultaneously realize efficient water drainage, prevent molten material from splashing back and maintain the stability of the water jet in the prior art.

This invention discloses a silicon rod, silicon wafer, solar cell, segmented solar cell, solar module, and photovoltaic system. The silicon rod comprises: four arc-shaped corners along a plane formed by a first direction and a second direction; two symmetrically arranged side surfaces along a third direction; at least one groove on each side surface; and arc-shaped sidewalls of the grooves; wherein the first direction, the second direction, and the third direction are perpendicular to each other. This solution, by setting the four corners of the silicon rod to arc shapes with equal radii of curvature, and providing at least one arc-shaped groove extending along a third direction on the side surfaces of the silicon rod, allows for the slicing of the silicon rod to obtain silicon wafers, the fabrication of solar cells from the silicon wafers, the cutting of the solar cells to obtain multiple segmented solar cells, and the arrangement of these segmented solar cells to form a solar module. This reduces light leakage areas on the surface of the solar module, lowers internal circuit losses, and increases module power.

The invention discloses a neural synapse bionic memristor with a composite two-dimensional material functional layer and a preparation method thereof, and the memristor comprises a substrate, a lower electrode layer, a composite functional layer, an upper electrode layer and a flexible protection film layer which are sequentially arranged from bottom to top. The composite functional layer comprises a resistive layer made of a two-dimensional material and a graphene barrier layer stacked and covered on the upper surface of the resistive layer, defect holes or spacing seams for forming conductive filaments during electrification are distributed on the graphene barrier layer, the upper electrode layer is an active metal electrode, and the lower electrode layer is an inert metal electrode. The resistive random access memory has the advantages that the resistive random layer and the graphene blocking layer are formed by the two-dimensional material, the defect holes or the spacing seams are formed in the graphene blocking layer, and due to the blocking effect of the graphene blocking layer, metal cations can only migrate downwards from the defect holes or the spacing seams and are gathered into conductive filaments; the forming efficiency of the conductive filament is relatively higher, and the forming position is relatively fixed, so that the cyclic switching stability of the memristor is improved to a certain extent.

This invention discloses a three-dimensional visualization organoid culture device, belonging to the field of organoid culture technology. It includes a control center, which is communicatively connected to a virtual three-dimensional scaffold module, a laser visualization monitoring module, a biolayer interference sensing module, and an automated culture medium control module. This invention abandons the traditional matrix gel solid scaffold and employs focused acoustic vortex technology to construct a dynamically adjustable virtual acoustic trap array. It utilizes acoustic radiation force to achieve cell capture and spatial arrangement, avoiding the interference of uncertainties in the composition and biocompatibility differences of solid scaffolds on organoid growth. Simultaneously, the acoustic trap array can adaptively reconstruct its topology according to the cell aggregation stage and metabolic state, solving the problem that traditional scaffold structures cannot adapt to dynamic cell growth, improving the morphological uniformity and physiological relevance of organoids, and providing a high-quality culture medium for organoid research and clinical applications.

The utility model discloses acetonitrile production purification equipment which comprises a purification tank body, a cover plate is arranged at the top of the purification tank body, a stirring motor is mounted on the cover plate, and a flow guide ring is sleeved at the top of the side surface of the purification tank body; a fixed disc is arranged in an inner cavity of the purification tank body, collecting pipes are annularly communicated with the interior of the inner cavity of the fixed disc at equal intervals, one end of each collecting pipe is communicated with a discharging pipe, the end, away from the collecting pipes, of each discharging pipe is communicated with a flow guide ring, a one-way valve is installed on a pipe body, and one side of each flow guide ring is communicated with a discharging pipe; according to the device, the first collecting tank and the second collecting tank can be used for collecting liquid acetonitrile purified in the purification tank body, the first collecting tank and the second collecting tank do not influence each other, and when one collecting tank is replaced, the other collecting tank can continuously work, so that the situation that the production rate is reduced due to shutdown is avoided, and the production efficiency is improved. The purification efficiency of acetonitrile can be ensured to the greatest extent.

The utility model discloses a sinker control device for flat knitting machine, including base body, be equipped with several vertical grooves and horizontal groove, cam mechanism, including homing cam, movable homing cam, intermediate homing cam, left push needle cam assembly and right push needle cam assembly, homing cam, intermediate homing cam fixedly connected on the base body, movable homing cam is slid in the horizontal groove, left push needle cam assembly, right push needle cam assembly is slid in the vertical groove, control mechanism is driven to be connected with cam mechanism, when the left or right of head moves, control movable homing cam in cam mechanism horizontal removal, simultaneously push left push needle cam assembly or right push needle cam assembly vertical removal, form the needle path of drive sinker and make the pressure ring action when forming circle, moving circle and needle, needle turning. Through the improvement control mechanism, make sinker pressure ring action can integration complete, improve the reliability while effectively reduced the space occupied by multiple drive.

The utility model provides a teaching aid capable of simulating and practicing setting of a battlestick. The teaching aid comprises a base, a shell, a rotating assembly, an indicating block, a stick plate, a rotating assembly, a rotating rod and a dial, the shell is installed on the surface of the base, the rotating assembly is arranged in the shell and comprises two driving wheels and a belt, and the belt is arranged between the two driving wheels; the indicating block is connected to the surface of the belt, and the ruler plate is installed on one side of the inner wall of the shell. The rotating assembly is arranged on the surface of the shell; the rotating rod is arranged between one driving wheel and the shell; the dial is arranged on one side of the rotating assembly. The utility model provides a teaching aid capable of simulating and practicing the setting of a battle, which can greatly facilitate a teacher to explain parts when practicing in a combat room and explain the setting of the battle aiming at the correction course of a parallel machine gun in basic practice, and the teaching aid can be used for simulating and practicing the setting of the battle through visual display. Students can more quickly and accurately understand the use method and principle of the drum wheel gauge ruler, and clear cognition can be established for the students.

The application relates to a passive sonar buoy array method and device. The method comprises the following steps: based on sonar performance prediction, a target motion route set in a concerned sea area is constructed according to target detection requirements on the target in the concerned sea area; a target motion depth distribution is set; a sonar buoy array laying area and laying depth on a possible navigation path are constructed; then, the sonar buoy array laying area is divided into grids, and performance data of a sonar buoy laid at each grid point in the sonar buoy array laying area are calculated; a target detection efficiency model of the sonar buoy array is constructed; constraint parameters of the sonar buoy array in the concerned sea area are obtained; optimal sonar buoy array laying parameters in the sonar buoy array laying area under the constraint parameters are calculated through a numerical optimization algorithm; and finally, the sonar buoy array is laid in the sonar buoy array laying area according to the sonar buoy array laying parameters. The sonar buoy array efficiency is improved.

This invention discloses a solution-based epitaxial growth method for perovskite thin films and its preparation method, belonging to the field of perovskite optoelectronic device technology. Addressing the difficulty of achieving high-quality multilayer structures and crystal orientation control using existing solution methods, this invention first prepares a perovskite template layer with a preferred orientation on a substrate, and then uses thermal shock treatment to induce rapid crystallization of a second precursor solution under the guidance of the template layer's lattice structure. This method utilizes a solvent with inverse temperature solubility (such as 2-methoxyethanol), effectively solving the solvent orthogonality problem and achieving epitaxial growth of perovskite crystals. The resulting thin film exhibits a (001) preferred orientation throughout its thickness direction, with a Herman orientation factor as low as −0.36 and a trap state density as low as 1.62 × 10⁻⁶. 15 cm −3 The perovskite solar cells prepared using this method achieve a photoelectric conversion efficiency of 25.58% and exhibit excellent stability under high temperature and high humidity conditions. This invention features a simple and low-cost process, and is suitable for large-area fabrication and various perovskite material systems.

The application relates to a five-nuclear copper cluster modified silicotungstic acid crystal material with a three-dimensional entangled structure. The application aims to solve the problems of low efficiency, insufficient stability, high cost and the like of conventional catalysts. The patent takes SiO2.12WO3.26H2O and CuCl2 as raw materials, takes 5-(2-pyridyl)-1H-tetrazole (ptzH) as a ligand, adjusts a pH value, and reacts for 72 hours under the condition that the temperature is 160 DEG C to synthesize a transition metal modified silicotungstic acid crystal material with a three-dimensional entangled structure, which is used for photocatalytic decomposition of water to produce hydrogen. The material has a highest photocatalytic decomposition of water to produce hydrogen activity of 7.8 mmol g ‑1 h ‑1 under the condition that triethanolamine is used as a sacrificial agent, and has more excellent catalytic efficiency and electron transfer capacity.

This invention relates to the field of high-sensitivity radiation detection technology, specifically disclosing a method for preparing silver-doped boron phosphate glass sheets and their applications. The invention involves mixing, degassing, and melting the component raw material powders, pouring the molten glass into a preheated graphite mold, and then annealing, grinding, polishing, and cutting to obtain silver-doped boron phosphate glass sheets. By precisely controlling the P:B ratio and annealing process, this invention introduces B-O-P bridging and B-O-B structures at the glass network structure level, significantly improving the structural and environmental stability of the glass and overcoming the technical defects of existing silver-doped phosphate glasses, such as easy hydrolysis and fragility. The prepared glass sheets exhibit excellent photoluminescence properties, with a good linear relationship between luminescence intensity and radiation dose in the 0-50 Gy dose range, and possess neutron detection potential. They can be applied in fields such as radiation monitoring, high spatial resolution X-ray imaging, non-destructive testing, biomedical imaging, and encryption and anti-counterfeiting technologies.