55results about How to "Simple and fast operation" patented technology

The invention relates to a pair of high-heeled shoes capable of adjusting height. Each high-heeled shoe comprises a shoe sole, a vamp and a heel, each heel comprises an outer heel and an inner heel, the inner heels are arranged in the outer heels, positioning holes are formed at the lower ends of the outer heels, and positioning pins are arranged at the upper ends and lower ends of the inner heels. Each positioning pin comprises a spring and a button. The heel height of the outer heels (4) is 3-6cm. The heel height of the inner heels (5) is 2-5cm. When the high heels are not required, the inner heels are placed in the outer heels and positioned through the positioning pins and the positioning holes, and then the height of the heels is the height of the outer heels; and when the heels need to become high, only the inner heels need to be drawn out, the inner heels are also positioned through the positioning pins and the positioning holes, and the height can be further increased by 2-5cm on the basis of the outer heels. The operation is simple and convenient, the height can be adjusted at any time, and the use is convenient.

The invention discloses an endotoxin adsorption medium based on magnetic chitosan microballoon and an application method, wherein the preparation method of endotoxin adsorption medium comprises the following steps: (1) dispersing a magnetic material in an acetic acid solution, adding chitosan to prepare water phase I, transferring water phase I to liquid paraffin containing span 80, taking glutaraldehyde as a cross-linking agent, preparing chitosan microballoon by using an anti-phase suspension method; (2) dispersing magnetic chitosan microballoon in a mixed solution of dimethyl sulfoxide and sodium hydroxide, adding chloropropylene oxide for activating, washing by deionized water till neutralizing to obtain an activated product; (3) placing the activated product in an endotoxin affinity ligand solution for immobilizing to obtain the endotoxin adsorption medium based on the magnetic chitosan microballoon. The endotoxin adsorption medium of the present invention has high selectivity of endotoxin and simple operation, and can be used for removing the endotoxin in a plurality of biological products.

The invention discloses a method for preparing pirfenidone, comprising the following steps: subjecting 2-amino-5-methylpyridine which is a starting material to inverse diazotization and hydrolysis, extracting with extraction solvent, and recrystallizing with recrystallization solvent to obtain 2-hydroxy-5-methylpyridine; heating the 2-hydroxy-5-methylpyridine together with iodobenzene in the presence of anhydrous potassium carbonate and active copper to subject the 2-hydroxy-5-methylpyridine and the iodobenzene to nucleophilic substitution reaction to generate a target compound which is the crude pirfenidone; and recrystallizing the crude pirfenidone for one time for purification with recrystallization solvents which are ethyl acetate and anhydrous ethyl alcohol to obtain the pure pirfenidone. Compared with the prior art, the method for preparing the pirfenidone has the characteristics that: the 2-amino-5-methylpyridine which is the starting material is a commercial chemical product, is cheap and is easy to get, the inverse diazotization replaces the conventional diazotization reaction so that the operation is simple, and the purification methods of the 2-hydroxy-5-methylpyridine and the end product which is the pirfenidone are easy to operate and have high yield. The method for producing the pirfenidone consumes less energy, and the production cost is lowered due to the adoption of the method.

The invention relates to a splitting reagent for removing non-nuclear red blood cells in a biological sample and an application of the reagent to DNA extraction. The splitting reagent for removing non-nuclear red blood cells comprises a metal ion chelating agent, inorganic salts, a surfactant and a solution buffer system. The invention further provides an application method of the splitting reagent to DNA extraction. The splitting reagent for removing non-nuclear red blood cells provided by the invention overcomes defects that a conventional product is poor in stability, needs frozen preservation and needs to be preheated for use after being taken out, the red blood cells in blood samples or tissue cell samples of people, mice and the like can be effectively removed through splitting, andnucleated cells in the samples are separated and enriched. The splitting reagent is used for extracting nucleic acid(DNA) of the nucleated cells, and has the advantages of being stable in components,safe, environmental-friendly, high in splitting efficacy of the red blood cells, and quick and simple to operate. The reagent can be stored at normal temperature for a long term, cold chain transportation is not needed, and the preparation and use cost is low.

The invention discloses a DNA bar code used for screening high-quality Tibet brown mushrooms, a primer and application of the DNA bar code used for screening the high-quality Tibet brown mushrooms andthe primer. The DNA bar code used for screening the high-quality Tibet brown mushrooms contains one or more of 17 DNA fragments with nucleotide sequences shown in SEQ ID NO: 1-17 as shown in the description. The amplification primer of the DNA bar code used for screening the high-quality Tibet brown mushrooms contains one or more of 17 pairs of primers with upstream and downstream nucleotide sequences respectively shown in SEQ ID NO: 18-51 as shown in the description. Compared with a traditional breeding method and other existing DNA bar code technologies, the DNA bar code used for screeningthe high-quality Tibet brown mushrooms, the primer and application of the DNA bar code used for screening the high-quality Tibet brown mushrooms and the primer have the advantages of being time-saving, energy-saving, money-saving, accurate and efficient, and play a positive role in genetic breeding of the high-quality Tibet brown mushrooms, and an effective method is provided for identification and protection of germplasm resources at the same time.

The invention discloses an in vitro detection kit for thrombin-activatable fibrinolysis inhibitor (TAFI) content. The kit is used for the in vitro detection of the TAFI content by using the biological property that a polyamidoamine (PAMAM) dendritic polymer can be combined with an antibody and combining the traditional enzyme-linked immuno sorbent assay (ELISA) method, and the kit develops a new in vitro diagnostics method for the TAFI and improves the sensitivity of the TAFI in vitro detection. The kit comprises an antibody coated ELISA plate, a sample diluent, a TAFI standard, a detergent, a PAMAM-labeled horse radish peroxidase-linked antibody, an antibody diluent, color development buffer solution, 30 percent hydrogen peroxide, o-phenylenediamine and stop solution. The kit overcomes the defects of expensive equipment, long detection time and the like in the prior art; compared with other detection kits, the kit is simple, convenient and fast in operation, low in cost, sensitive in diagnosis and has low detection limit and the like; the kit for auxiliary diagnosis improves the detection rate and the accuracy of related diseases, and fulfills the purposes of early discovery and early treatment; and the kit reduces unnecessary pain and medicinal expense of examined persons, and improves the quality of life of the examined persons.

The invention provides a production method of low-molecular weight tremella polysaccharide. The production method comprises the following steps of using alcohol to settle tremella polysaccharide fermenting liquid produced by a fermenting method, acidifying, discoloring, removing protein, refining, drying, and the like, so as to obtain a low-molecular weight tremella polysaccharide product. The low-molecular weight tremella polysaccharide has the advantages that the wall breaking and the hydrolysis are combined by acidifying, so that the operation is simplified, and the yield rate can reach 26g / L; the relative molecular weight of the prepared tremella polysaccharide is lower than 100kDa, the content is greater than 80%, the content of protein is smaller than 0.5%, the yield rate is high, the content is high, the impurity is less, and the low-molecular weight tremella polysaccharide can be widely applied to the fields of medicines and daily chemicals.

The invention belongs to the technical field of catalysis and relates to a method for preparing a platinum-carbon catalyst which is high in activity and stability. The method comprises the following steps: 1, preparing a chloroplatinic acid alcohol solution : diluting the chloroplatinic acid with an alcohol solvent I so as to obtain the chloroplatinic acid alcohol solution; 2, preparing a sodium hydroxide solution : dissolving sodium hydroxide into an alcohol solvent II so as to obtain the sodium hydroxide solution; 3, preparing an activated-carbon-loaded platinum-carbon catalyst: adding the chloroplatinic acid alcohol solution prepared in advance in an activated carbon carrier, then adding the sodium hydroxide solution and carrying out microwave reduction; 4, cooling and drying, after completion of microwave reduction in the step 3, cooling the mixture to room temperature, adding deionized water, the volume of which is the same as that of the mixture, carrying out extraction filtration and washing, and carrying out vacuum drying on the catalyst. According to the invention, the operation is quick and simple, process stability and repeatability are good, active component particles are distributed uniformly, the particle size range is narrow and the fact that the particle size is controllable is realized according to the quantity of sodium hydroxide and the solvents; the catalyst prepared through the preparation method is high in activity and good in stability.

The invention discloses a method for detecting biogenic amine in yellow wine by using a chromatographic sheet, belonging to the technical field of analysis and detection of components in the yellow wine. The method comprises the steps of carrying out derivation on a biogenic amine standard substance and a to-be-tested yellow wine sample by using a derivatization reagent, enriching the biogenic amine by using liquid-liquid extraction, carrying out sample application on a sheet plate, arranging the sheet plate in a saturate tank loaded with a certain proportion of developing solvent and unfolding; developing and observing under an ultraviolet lamp, and qualitatively detecting the target biogenic amine; and finally, quantitatively measuring the biogenic amine in the yellow wine by using a thin layer chromatograph. According to the method, the detection limit range of the biogenic amine is 0.5-5 mug / mL, the average adding standard recovery rate is 88.5-110.3 percent, the standard deviation is 3.8-12.5 percent, and at most 13 samples can be simultaneously detected on a 20*20 thin layer glass plate. Compared with other analysis methods, the method has the advantages that qualitative and quantitative analysis of the biogenic amine in the yellow wine can be realized, the operation is simple and convenient, the cost is low, and a plurality of samples can be simultaneously detected.

The computer controlled water column massage therapeutic equipment consists of one therapeutic bucket with water inlet pipe and water outlet pipe, one water column pressure and frequency controller, and one control cabinet. The therapeutic bucket has several water nozzles and one liquid level sensor; the water column pressure and frequency controller includes one control water valve array comprising flow rate sensors, step motor and rotary water valve, and one electromagnetic water valve for controlling the on-off frequency of the water columns; and the control cabinet consists of one control panel, one computerized control system and one sealed water heating tank. The water column massage therapeutic equipment has its water column pressure, direction, range and frequency automatically controlled, and thus obvious treating effect, simple operation and high use safety.

The invention relates to the multimedia data communication technology field and provides a multimedia data safety monitoring device, a receiving terminal, a multimedia data authentication method and a system thereof. The authentication system comprises: a multimedia data safety monitoring device and a multimedia data receiving terminal, wherein the multimedia data safety monitoring device is used to acquire multimedia data, carry out safety authentication to the multimedia data and stores authentication result information in a safety checking code database; the multimedia data receiving terminal is used to receive the multimedia data, using a same method which the multimedia data safety monitoring device used to carry out the safety authentication to the multimedia data and feed back the safety authentication result information to the multimedia data safety monitoring device. The multimedia data safety monitoring device carries out comparison authentication to the received safety authentication result information and the corresponding safety authentication result information stored in the safety checking code database. If the two are matched, the authentication is passed and the multimedia data receiving terminal decodes and plays. A technical scheme is easy to be realized. Contents are safe and a definition is simple and strictness. Security is high. Implementation and management costs are low.

The invention discloses a fiber radical sewage decoloration and purification material which is characterized by comprising a component (I) and a component (II). The component (II) occupies 5%-10% of the total mass. The component (1) is a product obtained by reaction of 36% formaldehyde solutions, dicyandiamide, ammonium chloride and property-modifying additives A, wherein the mass ratios of the 36% formaldehyde solutions, the dicyandiamide, the ammonium chloride and the property-modifying additives A are sequentially 1.0-1.3:0.50-0.65:0.60-0.70:0.06-0.09. The property-modifying additives A are a mixture obtained by mixing magnesium sulfate and magnesium chloride according to a proportion, wherein the mass ratio of the magnesium sulfate and the magnesium chloride is 2.0-3.5:8.0-6.5. The component (II) is a natural fiber (plant and / or animal) which is modified by cation modifiers. The fiber radical sewage decoloration and purification material integrates multiple functions such as decoloration, flocculation, entanglement and COD removing. The decoloration ratio of sewage can reach more than 93%, the COD value removing rate is higher than that of the prior art by more than 10%, reclaimed water reusing can be achieved, and sewage discharging is reduced.

The invention discloses a rapid analysis method for sodium hydroxide and ammonia content in sodium cyanide reaction solution and its liquid products, which uses excess formaldehyde and ammonia to react to generate hexamethylenetetramine, and then divides into two groups of titration with hydrochloric acid, Obtain two sets of values ​​of ammonia-containing acid consumption and ammonia-removing acid consumption, and then calculate the content of sodium hydroxide and ammonia in the sample through data measurement, thereby effectively reducing the interference of free ammonia on the analysis of sodium hydroxide content, and quickly and accurately analyzing cyanide. Sodium hydroxide content and ammonia content in sodium chloride reaction liquid and its liquid products. The method of the invention is fast and effective, has obvious mutations in analysis and titration, accurate and reliable measured values, simple and convenient operation and easy mastery.

The invention discloses a heat treatment method for recovering the performance of a K465 alloy turbine blade and belongs to the technical field of metallurgy. The heat treatment method comprises the following steps of 1, blade feeding, 2, furnace heating and then heat preservation: in vacuum or inert gas protective atmosphere, carrying out heat preservation at a temperature of 950-960 DEG C for 40-45min, carrying out heat preservation at a temperature of 1190-1200 DEG C for 2-2.5h and carrying out heat preservation at a temperature of 1230 DEG C for 4-4.5h, and 3, furnace cooling: (1), carrying out cooling from a temperature of 1230 DEG C to a temperature of 1000 DEG C at a cooling rate of 40+ / -25 DEG C / min by inert gas-based differential pressure cooling, and (2), feeding inert gas at a temperature of 1000 DEG C, carrying out cooling to a temperature of 300 DEG C, and opening a furnace door at a temperature below 300 DEG C and carrying out cooling. The heat treatment method can obviously recover the performance (such as creep deformation) of the K465 alloy turbine blade after a service cycle. Through the heat treatment method, transgranular gamma' polygonal or flower basket-shaped morphology is transformed into the cubical morphology so that morphology squaring is promoted.

The invention discloses a method for obtaining transgenic chickens through spermatogonial-stem-cell in vivo transfection mediated by lentivirus vectors. The method comprises the steps of directly injecting a lentivirus vector into a testis of a cock, transferring genes of endogenous spermatogonial stem cells to generate transgenic sperms, mating the cock with a normal hen and then obtaining the transgenic chickens. Through the way with the endogenous spermatogonial stem cells, the method for obtaining transgenic chickens through spermatogonial-stem-cell in vivo transfection mediated by lentivirus vectors can avoid opening poultry eggs, and has the advantages of low virus consumption, fast group extension and capability of stable passage.

The invention relates to a synthesis method of 2-(2-chloroethoxy) acetic acid, which belongs to the technical field of the preparation and the application of fine chemical engineering products. The invention particularly belongs to the synthesis method of 2-(2-chloroethoxy) acetic acid. The invention uses 2-chloroethoxy ethanol as starting materials, uses water as solvents, and uses nitric acid for direct oxidization to obtain products. The reaction process is shown as the accompanying drawing. The invention adopts water as the solvents, and uses the nitric acid as oxidizing agents for efficiently oxidizing the 2-chloroethoxy ethanol into corresponding acids. The method has the advantages of simple operation, low price of raw materials, easy acquisition of raw materials, simple requirement on equipment, simple after treatment and the like. In addition, the use of the organic solvent has nearly zero cost, and the invention conforms to the environmental protection industrial production requirements, so the invention has wide application prospects.

The invention relates to a cleaning device for chemical products, in particular to an inert chemical product charging bucket cleaning device. According to the technical purposes of the inert chemicalproduct charging bucket cleaning device, the cleaning effect is good, operation is easy and convenient, and injuries to human bodies are small. In order to achieve the technical purposes, the inert chemical product charging bucket cleaning device is provided and comprises supporting legs and the like; a first supporting plate is horizontally placed on the tops of the left and right side supportinglegs; a cleaning mechanism is installed in the middle of the bottom of the first supporting plate; and a second supporting plate is connected to the position, close to the upper portion, of the bottom between the left and right side supporting legs, and is provided with an overturning and tipping mechanism. According to the inert chemical product charging bucket cleaning device, due to mutual cooperation of the cleaning mechanism and the overturning and tipping mechanism, recycled charging barrels are cleaned, and meanwhile, by means of optimization of an auxiliary mechanism and a secondary treatment mechanism, the effects that the cleaning effect is good, operation is easy and convenient, and injuries to human bodies are small are achieved.

The invention relates to the field of inspection and quarantine and aims to provide a dual fluorescent quantitative RT-PCR (Reverse Transcription-Polymerase Chain Reaction) detection kit for detectingPEDV-TGEV (Porcine Epidemic Diarrhea Virus-Transmissible Gastroenteritis Virus) nucleic acid. The kit comprises (1) an inverse transcription and fluorescent quantitative RT-PCR amplification mixed liquid, wherein the mixed liquid comprises an inverse transcription and fluorescent quantitative amplification primer and a probe and has sequence of SEQ ID NO: 1-6 as shown in the specification, and the inverse transcription primer is a 12 basic group random primer; (2) negative control; (3) positive control, wherein the positive control comprises positive control plasmid for the porcine epidemic diarrhea virus and the transmissible gastroenteritis virus. Compared with the prior art, the kit has the advantages of being high in flux, low in cost, good in specificity and high in sensitivity.

The invention relates to a magnet assembly tool and an assembly process for application of matching the magnet assembly tool with liquid nitrogen cold assembly technology. The magnet assembly tool comprises a bottom plate and a pressing rod located above the bottom plate, a first positioning pin is arranged in the middle of the bottom plate, and two second positioning pins are arranged on the sideportion of the bottom plate. The pressing rod comprises a rod part and a positioning disc on the rod part, a positioning block is arranged in the middle of the positioning disc, and two third positioning pins are arranged on the side portion of the positioning disc. A magnet is mounted at the upper end of the pressing rod. The assembly process that the magnet assembly tool and the liquid nitrogencold assembly technology are applied in a matched mode enables the manufacturing cost to be low and operation to be easy and convenient, and the application that the tool and the liquid nitrogen coldassembly technology are applied in a matched mode enables part assembly efficiency to be high and the size to be stable.

The invention discloses a non-stick coating layer, which is prepared from the following raw materials in parts by weight: 40 to 50 parts of epoxy acrylate, 25 to 32 parts of polyacrylic acid fluorine-containing ester, 25 to 32 parts of poly (vinylidene fluoride-trifluoroethylene), 10 to 15 parts of polytetrafluoroethylene powder, 2.5 to 4 parts of a suspension dispersing agent, 1 to 1.4 parts of aleveling agent and 1.5 to 2 parts of a curing agent. The non-stick coating layer has excellent lubricating performance and excellent non-stick performance, can completely meet the use requirements ofvarious processing molds (such as various plastic demolding, baking molds and papermaking and textile industries), contains no demolding agent (the production efficiency can be improved), and has excellent durability; in addition, no silicone oil is contained, and the product is prevented from being polluted; the adhesive force with a base material is large, the loading capacity is large, the impact resistance is good, the flexibility is good, the comprehensive performance is good, and the service life is long.

The invention discloses methods for sampling and detecting microorganisms on a contact surface and belongs to the technical field of microbiological detection. The sampling method comprises the following steps: 1), sterile filter paper is placed in a sterile wetting liquid containing peptone, a surfactant and sodium chloride for wetting; 2), a to-be-detected surface is covered with the wetted filter paper, and the filter paper is retained for sampling. The detection method further comprises the following steps: the filter paper after sampling is arranged in a phosphate buffer, uniform mixing, sampling and counting are performed, and the quantity of microorganisms on unit detected surface is obtained through calculation. The sampling method is simple to operate and high in sampling efficiency, causes little mechanical damage to the microorganisms on the contact surface, is particularly suitable for batch sampling of the microorganisms on table board type contact surfaces and can improve the sampling efficiency substantially. Meanwhile, the detection precision and accuracy of the detection method are high, and the detection efficiency can be improved substantially.

The invention relates to an egg-custard stewing pot and the stewing method therefor. The egg-custard may be sweet custard prepared from fresh egg, white sugar, fresh milk, sesame oil, and warm water by stewing and suitable for nursing infants and children, or may be saline custard prepared from fresh egg, salts, dried shrimp husk, ginseng, sesame oil, and warm water by stewing and suitable for physically-weak senior people. The stewed egg-custard has smooth taste, and strong flavour, rich nutrition, etc. and inventive egg-custard stewing pot is easy to operate and control with low cost and low power consumption, and is applicable to family for everyday use.

The invention discloses a cord strapping and knot tying method, which comprises the following steps: pre-winding multiple cord knots on a support in the shape of a hollow cylinder or other shapes by various required strapping methods and knot tying methods, and placing the cord knots on the object parts needing to be strapped. The free end of the cord is wound around an object needing to be strapped and pulled back by a nipper or other devices passing through the inside of the support so that the free end of the cord and the nipper pass through the centers of multiple cord knots pre-wound on the surface of the support in the shape of a hollow cylinder or other shapes; a pair of pushing tongs or a pushing rod pushes the multiple cord knots pre-wound on the support one by one along the knot tying direction of the cord knots so that the cord knots are wound and knotted with the free end of the cord wound around the strapped object; and the core knots are pushed to the object needing to be strapped and firmly tied to realize an effective strapping and knot tying effect.

The invention discloses a method for measuring the cobalt content of a microorganism culture system by an acidizing treatment method. The method is characterized by comprising the steps of putting 0.5-3.5 mL of a sample to be measured into a container with an opening, adding 65-68 mass percent of concentrated nitric acid according to a volume ratio of 1:1, and oscillating and mixing the sample and the concentrated nitric acid to be uniform, wherein the sample to be measured is a solution to be measured containing cobalt ions in the microorganism culture system; heating the mixed solution until the mixed solution is boiling, oscillating to remove acid, evaporating the mixed solution until the mixed solution is nearly dried, adding pure water for smelting, losslessly transferring the mixture into a volumetric flask with the volume of 10 mL, and finally adding water into the volumetric flask to fix the volume to a scale line; measuring the cobalt content of the aqueous solution in the volumetric flask by adopting a spectrophotometric method or / and an atomic absorption spectrometry. According to the method disclosed by the invention, the sample to be measured is subjected to acidizing treatment, so that the shortcoming that components of a microorganism culture medium seriously affect cobalt measurement is overcome; meanwhile, other impurities cannot be introduced; therefore, the method disclosed by the invention has the advantages of simplicity, quickness, accuracy and sensitivity in operation and the like and can be successfully applied to the measurement of the cobalt content of the microorganism culture system.

The invention discloses a lifting and transferring position-changing machine for a lawn mower, and belongs to the technical field of equipment manufacturing. The lifting and transferring position-changing machine comprises a base, horizontal travelling mechanisms, a vertical lifting mechanism and a rotary mechanism. The horizontal travelling mechanisms comprise the driving horizontal travelling mechanism and the driven horizontal travelling mechanism. The vertical lifting mechanism comprises a driving vertical lifting arm, a driven vertical lifting arm and a lifting power mechanism. The rotarymechanism comprises a driving rotary arm and a driven rotary arm. By utilizing the automatic lifting and transferring position-changing machine, manual carrying is not needed, manual turnover is notneeded, the labor intensity of carrying and turnover of the lawn mower is reduced; at least two operators are needed during manual carrying and turnover of the machine is avoided, but one worker is saved through the lifting and transferring position-changing machine; and the assembly efficiency is improved, equipment layout is reasonable, operation is easy and convenient, and digital management and control in the whole process are achieved.

The invention discloses a chair unit and a chair. The chair unit comprises a base, a slide rail assembly, a seat support element, a back support element, a first connecting rod and a second connectingrod, wherein the slide rail assembly is vertically put on the base and is provided with a movable rail and a still rail; the seat support element comprises an outer seat and an inner seat; the innerseat is configured to always maintain an approximately horizontal state or a state of forming an acute angle with a horizontal plane; an avoiding space is formed in the outer seat; the inner seat is selectively embedded into the avoiding space to be surrounded by the outer seat; the outer seat is hinged relative to the movable rail; and the first connecting rod, the second connecting rod, the inner seat and the base form a four-connecting-rod mechanism. The invention firstly provides the chair unit capable of being freely converted between two states including a flat sitting posture state anda standing posture state, and the conversion can be realized only through sliding matching of the slide rail assembly. Compared with the prior art, the chair unit has the advantages that the structureis simple; the operation is very simple and convenient; and the cost is low. The invention further provides a chair which is matched with the chair unit to be used and has the advantages that the operation is simple and convenient, and the sitting and standing conversion is convenient and fast.

The invention provides an ultrahigh-frequency surface-mounted ceramic vertical interconnection structure and a packaging structure, belonging to the technical field of chip packaging microwave signal interconnection. The ultrahigh-frequency surface-mounted ceramic vertical interconnection structure comprises a ceramic medium, a front pin bonding pad, a back pin bonding pad and a similar coaxial structure, wherein the front pin bonding pad is arranged on the front surface of the ceramic medium, and a GND region is arranged around the front pin bonding pad; the back pin bonding pad is arranged on the back surface of the ceramic medium, and another GND region is arranged around the back pin bonding pad; the similar coaxial structure comprises a radio frequency signal vertical transition hole and a grounding vertical transition hole which are arranged in parallel; and the radio frequency signal vertical transition hole is arranged to be perpendicular to the ceramic front pin bonding pad. The packaging structure comprises the ultrahigh-frequency surface-mounted ceramic vertical interconnection structure. The ultrahigh-frequency surface-mounted ceramic vertical interconnection structure of the invention has the advantages that the vertical transmission performance of radio frequency can be improved, and the transmission of DC-40GHz broadband high-frequency signals can be realized between ceramics; and the structure is a vertical interconnection structure, good vertical transmission of radio frequency signals can be realized within 40 GHz, and return loss S11 and S22 are superior to -10 dB.

The invention relates to a method for preparing mercury-free ammonium detection test paper, and belongs to the field of analytical chemistry. Based on filter paper of 1 square centimeter, the ammonium test paper consists of 0.5 to 5.6 milligrams of soaked phenol, 0 to 0.1 milligram of sodium nitroprusside, 0.35 to 4.5 milligrams of disodium hydrogen phosphate, 3.0 to 10 milligrams of sodium phosphate, 0.3 to 4.6 milligrams of sodium hypochlorite and 0.15 to 0.5 milligram of sodium hydroxide. The reagent content of the ammonium test paper is only one percent of that in other ammonium ion test methods. The test paper of the invention has the advantages of simple manufacturing, convenience to carry, simple, convenient and rapid operation, vivid detection, high selectivity and capability of judging the ammonium ion content of a sample by visually comparing the color of the developing test paper with that of a standard color card. Reagents used by the method are ordinary chemical reagents which are non-toxic, safe and reliable and can be used for testing the ammonium content of various nitrogen fertilizers, soil, crop hydroponics nutrient solution, different kinds of ammonium-containing solution and sewage.

The invention discloses a formula of liquid for trapping flies. The liquid has a low price, is simple and effective, and has obvious trapping and killing effects. The liquid is prepared from sugar, vinegar, wine, water, sauce and washing powder according to the special formula. According to the biological characteristics of flies, the liquid is prepared from the non-toxic, easy-to-handle and environmental-friendly materials. The liquid can be used on various trappers for large-area fly prevention and control and is especially suitable for various feeding places and food processing places. The liquid for trapping flies is simpler and easier than conventional trapping and killing methods. Compared with the conventional prevention and control methods, the liquid for trapping flies saves more than 95 percent of production costs and reduces more than 98 percent of labor. Moreover, the liquid for trapping flies greatly improves the trapping and killing effects, has an effect of environmental protection, has no residual and does not pollute the environment.

The invention discloses a production method of high-acid high-ester flavoring liquor, and belongs to the technical field of brewing. The invention aims at providing the method for producing high-acid high-ester flavoring liquor by using byproduct tail water oily matter (TOSL) in pure-grain Luzhou-flavor liquor brewing. The method comprises the following steps: firstly removing tail water and solid impurity from an acquired TOSL sample, refining, and then uniformly mixing refined TOSL with a high-degree edible alcohol water solution, rotary-evaporating the mixed solution, collecting fraction, reducing the degree of the fraction by using purified water to obtain the high-acid high-ester flavoring liquor. The byproduct in the brewing process is sufficiently utilized, the quality of the base liquor is improved, good economic benefit is brought, and the waste emission in the brewing process is reduced, and the environment pressure is lightened; and the production method meets the general trend of energy conservation and emission reduction initiated by the nation in the industrial production, and has good social benefit.