43results about How to "Solve market needs" patented technology

The invention discloses a portable cholesterol molecular imprinting silk-screen printing electrochemical tester and belongs to the technical field of rapid detection. A silk-screen printing electrode is polymerized with template molecule cholesterol by electroplating and a mixed solution of a purified sample and conductive liquid is dropwise added on the surface of a working electrode of the silk-screen printing electrode; current of cholesterol can be directly read by the portable cholesterol molecular imprinting silk-screen printing electrochemical tester; a standard curve is corrected according to a silk-screen printing electrode piece with the cholesterol with the standard concentration; and the concentration of the cholesterol in the detected sample is calculated by a built-in program. The tester disclosed by the invention has a simple structure, is portable, sensitive, rapid and accurate, has high specificity and is economical. The tester can be used for directly detecting the cholesterol, has the advantages of portability, sensitivity, rapidness, high specificity and the like, has low price and is suitable for detecting the cholesterol on a base layer or in the field.

The invention provides a technology for preparing grease containing rich polyunsaturated fatty acid by taking lignocellulose type agricultural and forest wastes as raw materials through fermenting mortierella alpine, aiming at the problems in the prior art. The technology comprises the steps of pre-treating, saccharifying, carrying out mortierella alpine fermentation, extracting the grease and thelike. According to the technology provided by the invention, a fermentation phase of the mortierella alpine adopts a temperature gradual reduction method and the yield of ARA (Arachidonic Acid) can be remarkably improved; the ratio of the ARA in the total grease can reach 48 percent. Compared with the prior art, the technology adopts a cellulose preparation based on fiber-production globule bacteria to realize the saccharifying of lignocellulose, so that the cost of a carbon source and the enzyme utilization cost of a saccharifying phase are remarkably reduced; the cellulose saccharifying efficiency is 80 to 90 percent. Furthermore, a culture medium at a lignocellulose saccharifying phase and a fermentation culture medium in the technology can be circularly utilized, so that water can beremarkably reduced and the dosage of chemicals also can be remarkably reduced; the technology has remarkable effects of reducing wastewater emission and reducing the cost.

The invention discloses environment-friendly polyurethane two-component corner-crimping glue. The corner-crimping glue consists of a component I and a component II, wherein a weight ratio of the component I to the component II is 10:1 to 1:10, the component I comprises the following components: 41-52 percent of polyhydric alcohol A, 30-40 percent of filler A, 8-15 percent of filler B, 6-12 percent of modifier, 0.05-0.1 percent of catalyst, 1-2 percent of surfactant A, 2-5 percent of plasticizer A and 5-10 percent of plasticizer B; and the component II comprises the following components: 50-60 percent of isocyanate, 15-25 percent of MDI prepolymer, 10-16 percent of filler C, 2-6 percent of polyhydric alcohol B, 1-2 percent of surfactant B and 10-15 percent of plasticizer C. The comprehensive strength of the corner-crimping glue is greatly superior to that of polyurethane single-component corner-crimping glue, and the corner-crimping glue is high in stability and high in curing speed; and the corner-crimping glue has excellent joint filling capacity and is suitable for corner-crimping insertion of aluminum alloy doors and windows and curtain walls and overall corner cementing adhesion-sealing.

The invention provides a treatment and rehabilitation system, which comprises a main machine of the treatment and rehabilitation system for finishing treatment and rehabilitation training of a user, a work station for finishing applicable control and data analysis and storage of a plurality of terminal controllers, and a data cable for connecting the work station and two or more main machines of the treatment and rehabilitation system. The treatment and rehabilitation system has the advantages of being high in system integration degree, small in required site and high in automatic degree, andtraining requirements for various functions in one machine can be met to the maximal extent.

The invention provides a production method of a zirconium and zirconium alloy strip coil. The production method comprises the steps that a zirconium or zirconium alloy strip blank is heated in a heating furnace before production and is rolled on a steekle mill or a tandem rolling unit to the thickness that the blank can be transferred to a cold mill to be rolled, and the blank is directly coiled; surface treatment is carried out on a hot-rolling zirconium coil obtained through rolling on a continuous annealing-shot blasting-acid pickling production line, and a zirconium strip obtained after surface treatment is a smooth and clean zirconium strip which is in the metal natural color and free of oxide skin or harmful air suction layers; then a cold mill unit is adopted for carrying out cold rolling on the zirconium strip to obtain a thin strip, and cold rolling is carried out after annealing is carried out in an on-line annealing or vacuum annealing manner in the process of cold rolling; and finally various finished zirconium or zirconium alloy thin strip products of target thickness are obtained in a rolled manner. According to the production method, the cost is low, the product quality is good, and the rate of the finished products is improved by more than 15%; the requirements of nuclear power, chemical engineering and other aspects for thin zirconium materials and zirconium strips for thin-wall zirconium pipe welding can be completely met; and energy saving and consumption reduction are achieved, and high practical value is achieved.

Provided is a high-density culture method for litopenaeus stylirostris. The high-density culture method comprises following steps: 1, selecting each pond having sand content, 3 to 10 mu in an area and 1.8 to 2.5m in water depth, equipped with water-feeding and water-drainage facilities in absence of pollution, 2, cleaning and disinfecting the pond prior to free culture; 3, selecting and freely culturing stylirostris seeds, particularly selecting strong, non-injurious and virus-free seeds; 4, feeding seeds with feedstuff in accordance with three phases including feeding in small amount at an early phase, feeding artificial compound feed every day at a medium phase of cultivation and feeding fresh baits at a late phase of cultivation; 5, preventing and curing diseases and splashing lime water regularly; 6, performing daily management such as regular monitoring physical, chemical factors and biological factors of water in the culture pond and bottom material and paying attention to regular water-drainage and water-renewing. By taking the above culture method, high-density artificial feeding in the finite pond and high-quality litopenaeus stylirostris is cultured so that the requirement of the market is satisfied.

the invention discloses a plating method of non-mercury alkaline battery cathode case, which comprises the following parts: 3-20g Cu ion, 10-60f free CN, 4-30g tin ion, 1-35g KOH or 0.71-25g NaOH, 5-5000PPM micro-dose metal ion and 0.01-3g organics in each Cu-Tin alloy. the case is made of 20-77% Ni, 20-77% Cu, and 0.1-3% Cu-Tin alloy, which forms cathode case with pH value at 11-14 and 0.15-2.5 A / cm2 and 20-60 deg.c for 40-240 min.

The invention relates to an artificial cultivation method for hazel mushroom. The artificial cultivation method is characterized in that: the formula of hazel mushroom strain spray solution comprises the following raw materials by weight: 200g of paraquat, 200g of glyphosate isopropyl amine salt with content of 41 percent, 100g of methyl-4-chlorophenoxyacetic acid sodium, 50g of juice squeezed by using newly picked hazel nut fruiting bracts and 15kg of water; and the raw materials are mixed and uniformly stirred to prepare the hazel mushroom strain spray solution. The artificial cultivation method for the hazel mushroom comprises the following steps of: cultivating and planting from April to August each year; keeping an apparatus for spraying the hazel mushroom strain spray solution clean and sterile and spraying without pollution; closing ridges, covering soil and compacting after spraying the hazel mushroom strain spray solution; decomposing sprayed hazel mushroom strain when encountering soil; producing the hazel mushroom after blowing, raining and frozen snow thawing; and sprouting under the conditions of soil humidity of 20-50 percent and temperature of 10-25 DEG C which are suitable for growth and development to grow the hazel mushroom. The artificial cultivation method has the characteristics of low investment, no risk and high success rate; and the problem that the market consuming requirement cannot be met due to reduced resource of the wild hazel mushroom through artificial cultivation of the hazel mushroom is solved.

The invention relates to the technical field of leather making process, and provides a method for making flexible dry milled leather through low-grade wet blue leather. The method comprises the stepsof water squeezing shaving and weighing of the selected low-grade wet blue leather, softening and rising, washing, neutralizing, washing, grease adding, washing, drum outlet standing, water squeezingextension, primary hanging airing drying, softening, dyeing, washing, color registering, washing, surface treatment, washing, drum outlet standing, water squeezing extension, secondary hanging airingdrying, flesh side water spraying and standing, vibration staking, milling and coating. On the basis of the traditional process, three procedures of retanning, filling and vacuum drying in the after-tanning wet machining segment can be removed, the whole operation flow is short, the method is suitable for large-batch production use, the cost is reduced by 30%, the leather yield is increased by 20%, the leather hand feeling is soft and light, the leather body is rich and elastic, the pattern is full and uniform, and the utilization rate is high.

The invention discloses a BIM-based mini unmanned aerial vehicle networking operation method, being characterized in that a mini unmanned aerial vehicle (10) solves the problem that the battery capacity of the mini unmanned aerial vehicle (10) is small and the duration time is short through a take-off and landing platform (30) built on a communication tower (20), a wireless charging system (40) and an operation cloud platform (50).

The invention discloses a preparation method of silk and extremely-fine fiber mixed facial mask paper, which comprises the following steps that (1) a cotton opening process is carried out; (2) a cotton mixing process is carried out; (3) a carding process is carried out; (4) a net laying process is carried out; (5) a spunlace process is carried out; and (6) finally, wet tissues are dried through high-pressure steam and then wound and slit, and the silk and extremely-fine fiber mixed facial mask paper is obtained. Mulberry silk, cellulosic fibers and extremely-fine fibers are used as raw materials to produce non-woven fabrics, so that the non-woven fabrics have higher water absorption property and moisturizing property. The mulberry silk is a kind of fibers which are fine, soft and light andhas high fitting property. The difficulties that as for the mulberry silk, net forming is difficult, the uniformity is poor, and continuous production cannot be achieved are overcome, and market requirements are met; and the extremely-fine fibers are added, so that a facial mask cloth is softer and better fits skins.

The invention discloses a high-yield crayfish breeding method. The high-yield crayfish breeding method comprises the following steps: S1, pond preparation; S2, stocking of young shrimps: young shrimps are subjected to stocking in two batches, in the first batch, the young shrimps are bred at the end of February, the young shrimps are bred according to the specification of 100-120 young shrimps per jin and 30-50 jin per mu, and the young shrimps are harvested from March to April; in the second batch, the young shrimps are bred in the middle ten days of June according to the specification of 60-80 young shrimps per jin and 80-120 jin per mu, and the shrimps are harvested from July to December; and S3, feeding management: the young shrimps are fed with common crayfish compound feed from February to April; the young shrimps are fed with high-temperature-period crayfish compound feed from June to September; and the young shrimps are fed with common crayfish compound feed from October to December. According to the method, the crayfish breeding cycle is adjusted according to market requirements, the whole year is divided into two breeding stages for breeding large-size crayfishes, and the annual breeding benefits of the crayfishes can be effectively improved.

The invention discloses a portable AHL molecular imprinting silk-screen printing electrochemical detector, and belongs to the technical field of rapid detection. According to the invention, the surface of a working electrode is coated with a gold nano cross in a dropping manner; then, an AHL molecular analogue is used as a template; a gold-containing electrode is put into an electropolymerizationsolution containing a monomer, a cross-linking agent, a template and an initiator by adopting a surface imprinting technology for electropolymerization; template molecules are eluted to obtain an AHLmolecular imprinting silk-screen printing electrode, a peak current difference value before and after adsorption is obtained based on the electrode in cooperation with specific electrochemical detection conditions, a standard curve is obtained by using the concentration of a to-be-detected substance and the peak current difference value, and the AHL content is calculated. The detector disclosed bythe invention can be used for directly detecting AHL molecules, has the advantages of sensitivity, rapidness, recycling for multiple times, high specificity and the like, is low in price, and is suitable for detecting the AHL molecules on a base layer or on site.

The invention discloses an acoustic detection system and method for chronic leakage of a water supply pipeline. The system comprises a first sound wave sensor and a second sound wave sensor which are respectively arranged on the water supply pipeline at two ends of a leakage point to be detected; a sound wave data acquisition card which is electrically connected with the first sound wave sensor and the second sound wave sensor; and a sound wave data processing device which is in communication connection with the sound wave data acquisition card, can receive two groups of sound wave signals, acquired by the sound wave data acquisition card through the first sound wave sensor and the second sound wave sensor, of the water supply pipeline at the two ends of the to-be-detected leakage point, performs de-noising processing on the two groups of sound wave signals to obtain two groups of leakage sound wave signals, and performs cross-correlation delay estimation processing and positioning on the two groups of leakage sound wave signals to obtain the position of a leakage point on the water supply pipeline. The hardware of the system is simplified, the actual application range of acoustic leakage detection is expanded, low-pressure and small-flow chronic leakage can be found in time and positioned accurately, market requirements are met, the safety of drinking water is guaranteed, and the waste of water resources is reduced.

The invention discloses an HDMI signal transmission method, and the method comprises the following steps: arranging a signal transmitting part, a signal receiving part and a transmission line part consisting of an optical fiber line and a cable, wherein the signal transmitting part consists of an HDMI light conversion signal processing circuit and a remote control infrared signal output amplifying circuit, and the signal receiving part is composed of a light-to-HDMI signal processing circuit and a remote control infrared signal input amplification circuit; enabling the HDMI light-to-HDMI signal processing circuit to convert HDMI digital signals into light signals and send the light signals out; transmitting the light signals through a multimode optical fiber cable, and transmitting other signals of the HDMI through copper wires; enabling the light-to-HDMI signal processing circuit to convert the received light signal into an HDMI digital signal and transmit the HDMI digital signal to display equipment; enabling the remote control infrared signal input amplification circuit to amplify a remote control infrared signal sent by a remote controller and transmit the amplified remote control infrared signal to the signal emission part through a remote control infrared signal line. The invention further discloses an HDMI optical fiber transmission device. According to the invention, remote transmission of HDMI signals is effectively realized, and transmission of signals of remote control equipment is realized.

The invention relates to a stirred reacting and grinding processing method for production of high purity alpha-aluminum oxide, silicon carbide micron, nanometer grade powder material, which can effectively solve the market requirement problem for the production of the high purity alpha-aluminum oxide, silicon carbide micron, nanometer grade powder material for piezocrystal precision and minuteness processing. The technical proposal of the method is that: alpha-aluminum oxide or silicon carbide powder, water and an activating agent are added into a mixer respectively to react by stirring and be ground, wherein the ratio of the alpha-aluminum oxide or silicon cabide powder and water by weight is 1:5, dosage of the activating agent is 0.03 percent of the sum of the alpha-aluminum oxide or silicon carbide and the water by weight; while mixing, stirred reacting and grinding, the activating agent which is 0.03 percent of the sum of the alpha-aluminum oxide or silicon carbide and the water by weight is added into the mixture, so that after the materials react by sufficiently stirring and are ground, the materials are subjected to overflow separation, and are collected. The method is simple and unique, has low production cost and easy operation, the processed product has high purity and good quality, and has enormous economic and social benefits.

The invention discloses environment-friendly polyurethane two-component corner-crimping glue. The corner-crimping glue consists of a component I and a component II, wherein a weight ratio of the component I to the component II is 10:1 to 1:10, the component I comprises the following components: 41-52 percent of polyhydric alcohol A, 30-40 percent of filler A, 8-15 percent of filler B, 6-12 percent of modifier, 0.05-0.1 percent of catalyst, 1-2 percent of surfactant A, 2-5 percent of plasticizer A and 5-10 percent of plasticizer B; and the component II comprises the following components: 50-60 percent of isocyanate, 15-25 percent of MDI prepolymer, 10-16 percent of filler C, 2-6 percent of polyhydric alcohol B, 1-2 percent of surfactant B and 10-15 percent of plasticizer C. The comprehensive strength of the corner-crimping glue is greatly superior to that of polyurethane single-component corner-crimping glue, and the corner-crimping glue is high in stability and high in curing speed; and the corner-crimping glue has excellent joint filling capacity and is suitable for corner-crimping insertion of aluminum alloy doors and windows and curtain walls and overall corner cementing adhesion-sealing.

The invention discloses control equipment of an electric vehicle. The control equipment comprises a controller in which an anti-theft control module is integrated; an anti-theft control module which is used for analyzing the parameter information of the received at least one parameter after determining that the electric vehicle is in an anti-theft locking state, and controlling the electric vehicle to enter an anti-theft alarm mode when determining that parameters meeting anti-theft triggering conditions exist on the basis of analysis results. Through the control equipment, the problem that a burglar alarm and a controller are two independent electrical components and are connected through a cable, the cable is exposed outside and is extremely easy to shear, and consequently the burglar alarm function fails can be solved, the burglar alarm control module is integrated in the controller, the problem that the cable is exposed and sheared can be completely eradicated, the burglar alarm level is improved, part of circuits are shared, the cable is saved, and the space can be saved. And larger space is vacated for the controller, power is improved, and the market demand problem is solved.

the invention discloses a plating method of non-mercury alkaline battery cathode case, which comprises the following parts: 3-20g Cu ion, 10-60f free CN, 4-30g tin ion, 1-35g KOH or 0.71-25g NaOH, 5-5000PPM micro-dose metal ion and 0.01-3g organics in each Cu-Tin alloy. the case is made of 20-77% Ni, 20-77% Cu, and 0.1-3% Cu-Tin alloy, which forms cathode case with pH value at 11-14 and 0.15-2.5 A / cm2 and 20-60 deg.c for 40-240 min.

The invention discloses a human body data measuring system for remote garment customization. The system comprises a background service center, Internet of Things and a mobile terminal, a data acquisition system and a customized garment making system. The background service center is connected with the mobile terminals through the Internet of Things. The data acquisition system is in signal connection with the customized garment making system; The data acquisition system comprises a shared three-dimensional data scanning subsystem. The system comprises a shared manual data measurement subsystemand a data entry subsystem. the shared three-dimensional data scanning subsystem is formed by combining each group of three-dimensional scanning devices; The shared three-dimensional data scanning subsystems and the data input subsystems are combined in a one-to-one matching mode. The three-dimensional scanning device is reasonable in structural design, the utilization rate of three-dimensional scanning device merchants on the three-dimensional scanning device is increased, the market requirements of some three-dimensional scanning devices are met, consumers can conveniently measure the humanbody data of themselves, and clothes customization manufacturers can conveniently collect the human body data of customization personnel.

Aiming at the problems existing in the prior art, the invention provides a process for preparing oil rich in polyunsaturated fatty acids by fermenting Mortierella alpina with lignocellulosic agricultural and forestry wastes as raw materials. The process includes the steps of pretreatment, saccharification, Mortierella alpina fermentation, oil extraction and the like. The fermentation stage of Mortierella alpina in the present invention adopts the method of gradually lowering the temperature, which can significantly increase the ARA output and reduce the proportion of saturated fatty acids in the oil, and the proportion of ARA in the total oil can reach 48%. Compared with the prior art, the process of the present invention adopts the cellulase preparation based on cellulosome-producing bacteria to realize the saccharification of lignocellulose, which significantly reduces the cost of carbon source and the enzyme cost in the saccharification stage, and the saccharification of cellulose Efficiency is 80%‑90%. In addition, the lignocellulose saccharification stage medium and fermentation medium can be recycled, which can significantly save water and reduce the use of chemicals, and has a significant effect of reducing waste water discharge and reducing costs.

The invention discloses a portable AHL molecular imprinting silk-screen printing electrochemical detector, and belongs to the technical field of rapid detection. According to the invention, the surface of a working electrode is coated with a gold nano cross in a dropping manner; then, an AHL molecular analogue is used as a template; a gold-containing electrode is put into an electropolymerizationsolution containing a monomer, a cross-linking agent, a template and an initiator by adopting a surface imprinting technology for electropolymerization; template molecules are eluted to obtain an AHLmolecular imprinting silk-screen printing electrode, a peak current difference value before and after adsorption is obtained based on the electrode in cooperation with specific electrochemical detection conditions, a standard curve is obtained by using the concentration of a to-be-detected substance and the peak current difference value, and the AHL content is calculated. The detector disclosed bythe invention can be used for directly detecting AHL molecules, has the advantages of sensitivity, rapidness, recycling for multiple times, high specificity and the like, is low in price, and is suitable for detecting the AHL molecules on a base layer or on site.

The invention discloses a ginkgo leaf extraction technology and a processing method of ginkgo oolong tea. The ginkgo leaf extraction technology is characterized by comprising the steps of: extracting ginkgo leaves to obtain a concentrated liquid; then mixing with the oolong tea to form the ginkgo oolong tea, wherein the mass ratio of the ginkgo leaf concentrated liquid to the oolong tea is 1: (20-30). The processing method of the ginkgo oolong tea, disclosed by the invention, comprises the steps of: spraying the ginkgo leaf juice on the oolong tea uniformly according to a proportion to enable the ginkgo leaf juice to be absorbed fully and uniformly; drying at a constant temperature of 55+ / -2 DEG C to enable a moisture content to be less than 5%; and vacuum-packaging to obtain ginkgo oolong tea products. The method also can comprise the steps of: crushing the oolong tea into shreds of 10-30 meshes; mixing with the ginkgo leaf juice according to a proportion and enabling the ginkgo leaf juice to be absorbed fully and uniformly; drying at a constant temperature; and filling the tea by using teabag packaging paper to form the ginkgo oolong teabag products with each teabag of 2.5-5.0 g. The ginkgo oolong tea produced by the processing method disclosed by the invention has the characteristics of more obvious functions of clearing blood fat, preventing angiosclerosis, removing nicotine and alcoholism and certain prevention and treatment effects for fatty liver.

The invention relates to the technical field of leather making process, and provides a method for making flexible dry milled leather through low-grade wet blue leather. The method comprises the stepsof water squeezing shaving and weighing of the selected low-grade wet blue leather, softening and rising, washing, neutralizing, washing, grease adding, washing, drum outlet standing, water squeezingextension, primary hanging airing drying, softening, dyeing, washing, color registering, washing, surface treatment, washing, drum outlet standing, water squeezing extension, secondary hanging airingdrying, flesh side water spraying and standing, vibration staking, milling and coating. On the basis of the traditional process, three procedures of retanning, filling and vacuum drying in the after-tanning wet machining segment can be removed, the whole operation flow is short, the method is suitable for large-batch production use, the cost is reduced by 30%, the leather yield is increased by 20%, the leather hand feeling is soft and light, the leather body is rich and elastic, the pattern is full and uniform, and the utilization rate is high.

Aiming at the problems existing in the production of squalene by microbial fermentation in the prior art, the invention provides a process for preparing squalene by using lignocellulosic agricultural and forestry wastes as raw materials. The process includes the steps of pretreatment, saccharification, yeast-like fermentation, squalene extraction and the like. The process adopts the combination of lignocellulosic biosaccharification and yeast-like high-density fermentation; by using lignocellulosic biomass as raw material, on the one hand, the cost of enzymes used in the saccharification stage and the production cost of squalene microbial fermentation are significantly reduced On the other hand, it also solves the problem of comprehensive utilization of agricultural and forestry waste. In addition, the lignocellulose saccharification stage medium and fermentation medium can be recycled, which can significantly save water and reduce the use of chemicals, and has a significant effect of reducing waste water discharge and reducing costs. In the process of the invention, the squalene output can reach 13g / L, accounting for 5-9% of the dry weight of the bacteria, and the purity of the refined squalene is greater than 93%.

The invention relates to the technical field of non-woven fabrics, in particular to a silk seaweed mask non-woven fabric. The silk seaweed mask non-woven fabric comprises the following steps of fiber preparation, cotton opening, cotton blending, carding, lapping, spunlace, squeezing, drying, coiling and slitting, and is different from mask tissue in the previous market in that mulberry silk is adopted through technical improvement; cellulose fibers and alginate fibers are used as raw materials for producing the non-woven fabric, so that the non-woven fabric has higher water absorption performance and moisture retention performance, and the concept of silk is fused, wherein the mulberry silk is a fiber integrating fineness, softness and lightness and has very high fitness, and the mulberry silk is difficult to apply to the field of non-woven fabrics due to the fiber characteristics of the mulberry silk before; and at present, the difficulty is overcome, the fibers of the mulberry silk can be effectively fused, the mask tissue comes out, and the market requirement is met.

The invention belongs to the technical field of plant tissue culture and particularly relates to a tissue culture rapid propagation method for moonlight jujubes. The method includes the steps of establishment of an explant, culture starting, subculture, rooting culture, hardening, transplanting and the like. The moonlight jujubes are studied, most suitable culture components are adopted at different stages, the propagation coefficient is high, the rooting rate is high, the method is easy and convenient to operate and low in cost, and a large number of moonlight jujube tissue culture seedlings can be acquired effectively and conveniently within a short time; the obtained tissue culture seedlings are high in survival rate, and the seedlings can keep good genetic characters of superior trees; a large number of orderly regenerated plants with stable genetic characters can be acquired through the tissue culture rapid propagation method for the moonlight jujubes, the test result is stable, repeatability is good, the method can be applied to large-scale commercial seedling growing, the industrial development of the moonlight jujubes is promoted, and the method is suitable for large-area regional planting in north mountainous areas of Guangxi, particularly planting in karst landform mountainous areas.

The invention discloses a portable cholesterol molecular imprinting silk-screen printing electrochemical tester and belongs to the technical field of rapid detection. A silk-screen printing electrode is polymerized with template molecule cholesterol by electroplating and a mixed solution of a purified sample and conductive liquid is dropwise added on the surface of a working electrode of the silk-screen printing electrode; current of cholesterol can be directly read by the portable cholesterol molecular imprinting silk-screen printing electrochemical tester; a standard curve is corrected according to a silk-screen printing electrode piece with the cholesterol with the standard concentration; and the concentration of the cholesterol in the detected sample is calculated by a built-in program. The tester disclosed by the invention has a simple structure, is portable, sensitive, rapid and accurate, has high specificity and is economical. The tester can be used for directly detecting the cholesterol, has the advantages of portability, sensitivity, rapidness, high specificity and the like, has low price and is suitable for detecting the cholesterol on a base layer or in the field.

The invention belongs to the technical field of plant tissue culture and in particular relates to a tissue culture rapid propagation method of Xianwang jujubes. The method comprises the steps of explant establishment, initiation culture, subculture, rooting culture, hardening and transplanting. The method has the beneficial effects that researches are conducted aiming at the variety of Xianwang jujubes and the most appropriate culture medium composition is adopted at different stages, so the propagation coefficient is high and the rooting rate is high; the method is simple and convenient to operate, is low in cost and can achieve the effect of effectively and conveniently obtaining plenty of Xianwang jujube tissue culture seedlings in a short time; the obtained tissue culture seedlings have high survival rates and can maintain good genetic characters of superior trees; plenty of uniform regeneration plants with stable genetic characters can be obtained by adopting the tissue culture rapid propagation method of Xianwang jujubes, have stable test results and good repeatability, can be applied to large-scale commercial seedling raising and are suitable for being planted in large-area regions in the northern mountain regions in Guangxi, especially in the mountain regions with karst landforms.

The invention provides preparation and application methods of foliar fertilizer for increasing freshness of tea and relates to the technical field of foliar fertilizer for tea trees. The foliar fertilizer is characterized by being prepared from a main ingredient, a stabilizer, a synergist, a pH adjuster, a preservative and the like, wherein the main ingredient is soybean meal hydrolyzed amino acid powder, and soybean meal hydrolyzed amino acid powder is compound amino acids and rich in various nutrients; the stabilizer provides a stable environment for nutrients of the foliar fertilizer and plays a chelating role; the synergist is used for improving penetration and spreading capacity of the foliar fertilizer to reduce the surface tension; the pH adjuster plays a role in regulating pH of the foliar fertilizer; the preservative is used for preventing the free amino acids from deterioration during long-term storage and plays a role in bacteriostasis and sterilization. The foliar fertilizer has the beneficial effects that the content of the free amino acids in the tea is increased significantly, the quality of the tea is improved well, higher market demands are met, and the market competitiveness of the tea in the province is improved.