45results about How to "Cause poison" patented technology

The present invention adopts ethyl alcohol as reinfing solvent, and adopts the following steps: mixing stevioside and ethyl alcohol according to a certain proportion, stirring in dissolving process, solid-liquid separation of dissolved mixture, respectively decolouring obtained solid and liquid, drying to obtain refined stevoiside, in which the refined solid content is up to 88%, and its total recorery rate is high, and the refined stevioside is colourless, and has no abrormal taste.

The invention relates to a detection and analysis method for trans-2-nonenyl aldehyde potentiality in wort, which employs headspace solid phase micro-extraction and gas chromatography / mass spectrometry method, the method comprises the following steps: 1) sample pretreatment: placing wort in a headspace bottle for heat treatment; 2) ageing of a SPME extraction head: inserting the extraction head in a gas chromatography sample introduction for aging; 3) headspace solid phase micro-extraction: employing a solid phase extraction column to absorb a detected ingredient in upper space of the wort sample; 4) gas chromatography / mass spectrometry: editing a program, inserting the extraction head to an sample introduction port; vaporizing; introducing the ingredient from the sample introduction port to a capillary column for separating; and 5) detection: introducing the ingredient to be detected in a detector for detecting. A detection and analysis method of the present invention has the advantages of rapidity, less sample amount, accuracy, high sensitivity, no requirement of an extraction solvent and a derivative agent, no environmental pollution is generated, the environmental protection performance is good, and the detection and analysis method has no toxicity on testing staff body, and the security is high.

The invention discloses a method for preparing silk fibroin / hyaluronic acid double-network hydrogel capable of realizing three-dimensional loading of cells. The method comprises the following steps that (1) materials are sterilized; (2) a silk fibroin solution and a modified hyaluronic acid solution are mixed to form a prepolymer solution, and a photoinitiator is added to the prepolymer solution;(3) the prepolymer solution obtained in the step (2) is subjected to ultrasonic treatment, and after the ultrasonic treatment, the solution has fluidity and is translucent; (4) the solution obtained after being treated in the step (3) is mixed with the cells to obtain a cell prepolymerization solution, and the cell prepolymerization solution is further added to a cell culture plate; and (5) the culture plate obtained in the step (4) is placed under ultraviolet light and subjected to photo-crosslinking into gel, and then placed in an incubator at 37 DEG C until the prepolymerization solution becomes milky white, and the silk fibroin / hyaluronic acid double-network hydrogel is obtained. The method can realize the three-dimensional culture of the cells in the high-strength and high-tough double-network hydrogel, and is beneficial to the three-dimensional construction of the load-bearing soft tissue such as cartilage in vitro.

The invention provides a compound bird repellent containing carbosulfan, methyl ortho-aminobenzoate and benzyl acetate. The compound bird repellent is prepared by mixing the three active ingredients including the carbosulfan, the methyl ortho-aminobenzoate and the benzyl acetate in proportion, wherein the mass ratio of the carbosulfan to the methyl ortho-aminobenzoate is (2 to 1)-(1 to 20), and the mass ratio of the methyl ortho-aminobenzoate to the benzyl acetate is (1 to 1)-(1 to 2). After the compound bird repellent is used, the harm such as seedling shortage, damage to fruits and grains at the harvest time and the like caused by mass feeding of birds to the field crops, orchards and the like can be effectively avoided.

The invention discloses a biological insecticidal rooting dual protective agent and a preparation method and an application method thereof, the biological insecticidal rooting dual protective agent comprises the following raw materials by weight: 2-6 parts of lactic acid, 0.5-3.5 parts of thuricide, 1-5 parts of pseudomonas, 0.5-3.5 parts of bacterium subtilis and 0.1-2 parts of pyrethrum, and the biological insecticidal rooting dual protective agent is prepared by first monomer cultivation and then mixing in any ratio after mature cultivation. The biological insecticidal rooting dual protective agent can not only kill underground pests, but also can protect the roots of the vegetables to ensure the smooth growth of the vegetables, may not do poison harm to body of users or vegetables eaters, is specially effective on the underground pests, non-toxic and non-residue, and is an ideal biological agent.

The invention relates to a biological pest-killing and rooting dual protecting agent which comprises the following substances in percentage by weight: 2-6 parts of lactic acid bacteria, 0.5-3.5 parts of thuricide, 1-5 parts of pseudomonas, 0.5-3.5 parts of bacillus subtilis and 0.1-2 parts of pyrethrum. The invention further provides a preparation method and an application method of the dual protecting agent. The biological pest-killing and rooting dual protecting agent can not only play the function of quickly killing and eliminating underground insects but also inhibit recurrence of the underground insects, meanwhile is an excellent rooting and root-protecting product, can not only improve soil but also improve vegetable quality and increase yield and revenue, can not only eliminate underground insects, such as Chinese chive maggot, but also play a protective effect on the root system of vegetable to ensure smooth growth of vegetable, meanwhile cannot poison the body of a user or a vegetable eater, and is a necessity in organic vegetable planting process.

The invention relates to the technical field of bentonite deep processing and heavy metal pollution control, in particular to modified bentonite and application thereof, modified bentonite particles and a heavy metal adsorbent. The modified bentonite is prepared by modifying bentonite by using melamine or a melamine salt compound as a modifier. The removal efficiency of the modified bentonite on Hg<2+> ions can reach 99.63%, and the modified bentonite can be used for adsorbing heavy metals such as Hg<2+>, Pb<2+>, Cu<2+>, Cd<2+>, Ni<2+> and Zn<2+> in water and soil.

The invention discloses a method for quickly analyzing total diketone content of a beer semi-finished product. The method comprises the following steps: 1) preparing certain concentration of peroxide solution; 2) adding certain volume and certain concentration of peroxide solution to a sample before distillation; 3) distilling the sample for about 6 minutes to finish distillation by adopting a direct heating and distilling mode; 4) adding certain volume and certain concentration of hydrochloric acid solution to a 25ml distillate collecting volumetric flask before distillation, wherein the PH when the distillate is metered to the full scale is about 1.2, so that the diketone completely reacts with o-phenylenediamine to generate 2,3-dimethyl quinoxaline; and 5) carrying out colorimetric determination by using a spectrophotometer, and calculating the total diketone content. The quick analysis method disclosed by the invention has the advantages of being quick, simple to operate, convenient, accurate, high in sensitivity and the like, the variable coefficients of the repeatability and the reproducibility are smaller than 5% respectively, the recovery rate achieves over 80%, the analysis time is shortened to 30 minutes from 120 minutes in an electron beam curing (EBC) method, and the detection efficiency is improved by three times in comparison with that of the EBC method.

The invention provides an oxidation type biodegradable biaxially-stretchable bio-based nylon film. The oxidation type biodegradable biaxially-stretchable bio-based nylon film has a three-layer structure composed of a surface layer 1, a core layer and a surface layer 2, wherein the surface layer 1 and the surface layer 2 are composed of the following components in percentages by mass: 96.2% to 99%of bio-based nylon, 0.5% to 2% of an oxygen-containing biodegrading agent, 0.1% to 0.5% of an adhesion inhibitor, 0.1% to 0.5% of a slipping agent, 0.1% to 0.3% of a dispersant and 0.2% to 0.5% of a compatibilizing agent; and the core layer is composed of the following components in percentages by mass: 97.2% to 99.2% of the bio-based nylon, 0.5% to 2% of the oxygen-containing biodegrading agent,0.1% to 0.3% of the dispersant and 0.2% to 0.5% of the compatibilizing agent. Meanwhile, the invention also provides a preparation method for the oxidation type biodegradable biaxially-stretchable bio-based nylon film.

The invention discloses a selenium-rich spray solution as well as a preparation method and application thereof, which relate to the technical field of plant nutritional solutions, and solves the technical problems in the prior art that the selenium-containing nutritional solution is high in production cost, poor in effect on crops and easy to produce poisonous effect on the human body. The selenium-rich spray solution is mainly prepared from the following components by volume percent: 0.6 to 1.2 percent of organic selenium extract and the balance of water. The selenium-rich spray solution comprises the organic selenium extract, and is mainly sprayed in an irrigation period after earing and blossoming of the crops, can effectively improve setting percentage and stress resistance of the crops, can increase the yield of the crops and can increase the selenium content in seeds or fruits. The selenium-rich spray solution provided by the invention is low in cost, capable of ensuring that the selenium content of the crops to reach or exceed the national selenium limit standard in food (State Hygiene Standard LB13105-91), and is nontoxic and harmless to the human body, and safe.

The invention relates to a catalyst for preparing vinyl chloride by acetylene hydrochlorination and a preparation method thereof, belonging to the technical fields of catalysts and preparation thereof. The preparation method comprises the following steps: 1. taking a right amount of granulated catalyst support; and 2. measuring deionized water which is 1-3 times of water absorptivity of the granulated catalyst support by volume, weighing a bismuth-containing active component which accounts for 5-30 wt% of the granulated catalyst support, adding the bismuth-containing active component into the deionized water, and evenly mixing to obtain an impregnation liquid. The catalyst provided by the invention is equivalent to the industrial HgCl2 catalyst in the prior art, has the same selectivity for vinyl chloride as the industrial HgCl2 catalyst in the prior art, can not influence the quality of the PVC (polyvinyl chloride) product, and can not damage the environment. The deactivated catalyst can be regenerated and reutilized.

The invention discloses a method for promoting chlorella growth. The invention discloses application of pectinase and (2,4,6-trihydroxylphenyl)-4-(4-hydroxyphenyl) pyrazole in promoting algae growth. The pectinase is a common enzyme in the food field, and the (2,4,6-trihydroxylphenyl)-4-(4-hydroxyphenyl) pyrazole is a substance capable of promoting pectinase activity, which can avoid influence on other organisms in environment. A using method has the characteristics that the (2,4,6-trihydroxylphenyl)-4-(4-hydroxyphenyl) pyrazole is added to a water body when the chlorella grows to a certain stage, so that a promoting effect is taken when the chlorella just begins to grow to keep algae at a relatively high density and to effectively promote algae growth; the pectinase and the (2,4,6-trihydroxylphenyl)-4-(4-hydroxyphenyl) pyrazole have the features of being safe, efficient, degradable and the like; and the pectinase and the (2,4,6-trihydroxylphenyl)-4-(4-hydroxyphenyl) pyrazole can be extensively applied to a natural or landscape water body.

The invention relates to a production method for a fabric with flower pattern, in particular to a method that implements the peach finishing of the fabric with superficial dyeing, and the fabric is woven by yarns with different thickness. The fabric with superficial dyeing can be the fabric that is woven by yarns with superficial dyeing or the fabric that is woven by yarns and then superficially dyed. The method that implements the peach finishing of the fabric with superficial dyeing obtains flower pattern through peach finishing instead of stamping, thus being more environment-protective and harmless to persons who wear the fabric frequently; simultaneously as specialized flower polishing machines and flower polishing procedure are not needed, the method reduces the production cost in enterprises.

The invention provides farmyard manure granules and a preparation method thereof. The farmyard manure granules comprise the following raw materials by weight: 50 to 60 parts of human excrement, 30 to40 parts of pig manure, 10 to 20 parts of a cake fertilizer, 10 to 20 parts of soybean straw, 10 to 15 parts of urea formaldehyde, 10 to 15 parts of calcium superphosphate, 15 to 20 parts of modifiedvermiculite, 15 to 20 parts of humic acid, 2 to 3 parts of pericarpium papaveris powder, 6 to 10 parts of a biological fermentation inoculum, 8 to 10 parts of alum, 2 to 3 parts of radix stemonae, 2 to 3 parts of sodium fluorosilicate and 30 to 50 parts of an auxiliary material. The farmyard manure granules provided by the invention can achieve the purpose of killing bacteria and insects in farmyard manure without undergoing the process of high-temperature fermentation; a decomposition promoter in a fertilizer can promote decomposition of an organic fertilizer and facilitates absorbing the fertilizer for a crop; and through mixing of the farmyard manure and a chemical fertilizer, the synergistic effect of the fertilizer can be effectively enhanced.

The invention belongs to the technical field of electric power, and discloses a novel bird repellent apparatus which comprises a medicine storage box. An opening is formed in the medicine storage box, and bird repellent medicines are arranged in the medicine storage box. The novel bird repellent apparatus has the advantages that good effects can be realized, birds can be prevented from being damaged, and accordingly the novel bird repellent apparatus is environmentally friendly and is free of pollution.

The invention discloses a weeding composition containing pyroxasulfone and flumetsulam, belongs to the technical field of farm chemical preparation, and solves the problems that at present, weeds in a wheat field are various in variety and different in characteristics, a single herbicide is limited in herbicide controlling spectrum and cannot kill various weeds at the same time, existing farm chemicals are poor in adhesive force on plant leaves, and existing farm chemical synergists cannot be degraded. The weeding composition comprises the following raw materials in percentage by mass: 4-50% of pyroxasulfone, 2-60% of flumetsulam, and 1-2% of a synergist, with the balance being auxiliaries and excipients. While the weeding composition is prepared, the synergist is also prepared, the synergist contains a biquaternary ammonium salt structure, diester groups, diacetal, diglucose molecules and alkyl chains, has relatively low micelle concentration, and can be spread and wet on crops when being used as a farm chemical additive and a spraying solution, so that the rain wash of the spraying solution is reduced, the wetting time of the spraying liquid is prolonged, the absorption of plants to the spraying liquid is increased, and the control effect of the farm chemicals is improved.

The invention discloses a preparation method of environment-friendly green composite building adhesive and belongs to the field of adhesives. Sheep bones are pretreated to be completely puffed, water is added for immersion, the pH value is adjusted, and then bone glue is formed after separation; the bone glue, polyethylene glycol and sodium cyanate are mixed and react, and finally the composite building adhesive is obtained. The biological bone glue is modified, the prepared adhesive is environmentally friendly, free of harm to production and users, high in adhesive force, good in waterproofness and high in corrosion resistance, and the service life of the adhesive is prolonged.

The invention belongs to the technical field of biotechnology and discloses a preparation technology for a bird repellent preparation. The preparation technology comprises the following steps of: 1) preparing an absorbing carrier; 2) mixing and stirring; 3) crushing and grinding; 4) soaking, drying and grinding; and 5) preparing the bird repellent preparation. The preparation technology provided by the invention is simple and feasible. The prepared bird repellent preparation has excellent bird repellent effect, is harmless to the birds and is wide in application prospect.

The invention belongs to the technical field of biotechnology and discloses a preparation technology for a bird repellent preparation. The preparation technology comprises the following steps of: 1) preparing an absorbing carrier; 2) mixing and stirring; 3) crushing and grinding; 4) soaking, drying and grinding; and 5) preparing the bird repellent preparation. The preparation technology provided by the invention is simple and feasible. The prepared bird repellent preparation has excellent bird repellent effect, is harmless to the birds and is wide in application prospect.

The invention discloses an acid fog inhibitor performance test method. Neutral gas which does not react with acid fog is used for bringing out acid fog produced in an electrodeposition process, and isfed into water; after the water absorbs the acid fog, the pH value is reduced; the amount of the acid fog produced in the electrodeposition process is calculated by measuring a variation of the pH value of the water before and after the electrodeposition; the acid fog inhibition rate is calculated by comparing the amounts of the acid fog produced before and after the adding of an acid fog inhibitor into electrodeposition liquid. An acid fog test device comprises a gas source, an electrodeposition tank, an acid fog absorption unit and a vacuum pump which are connected in sequence through gas pipes; the acid fog absorption unit comprises multiple serially connected closed water accommodating containers; the water accommodating containers are also connected through gas pipes; gas flowmetersare arranged on the gas pipe between the gas source and the electrodeposition tank and the gas pipe between the acid fog absorption unit and the vacuum pump. The used device is small in size and simple in structure, can be placed in a fuming cupboard of a laboratory, and is harmless; the quantity of required samples is very small, and steps are simple; the data reproducibility is high, and a result is accurate and reliable.

The invention discloses a landscape garden ecological maintenance device. The landscape garden ecological maintenance device comprises a supporting frame mechanism, a power switching mechanism, a ropling mechanism and a feeding mechanism, wherein the power switching mechanism, the ropling mechanism and the feeding mechanism are arranged in the supporting frame mechanism; the power switching mechanism is located at the bottom position of the feeding mechanism, and the ropling mechanism is located at the position between the feeding mechanism and the power switching mechanism; the supporting frame mechanism comprises a fixing base, a first supporting column and a second supporting column, wherein the fixing base is used for being installed on a ship deck, and the first supporting column andthe second supporting column are fixedly arranged at the top of the fixing base; the power switching mechanism comprises an upper plate body, a lower plate body, an inclined guiding sliding rod and anadjusting sliding block, wherein the inclined guiding sliding rod is fixedly arranged between the upper plate body and the lower plate body, and the adjusting sliding block is arranged on the inclined guiding sliding rod in a sliding-fit connection mode; and a first motor is fixedly arranged at the right side end of the adjusting sliding block, and a power driving disk is connected to the right side end of the first motor in a power-fit mode. According to the landscape garden ecological maintenance device, the structure is simple, the operation is convenient, the labor amount of workers is reduced, and the throwing efficiency and the spreading efficiency are improved.

The invention discloses a wide-temperature vanadium-free denitration catalyst preparation method, which comprises: 1, dissolving a chromium-containing precursor, an iron-containing precursor and a copper-containing precursor in deionized water, and stirring in a water bath at a temperature of 20-30 DEG C for 30-60 min to obtain a mixed solution; step 2, adding a pretreated HY molecular sieve into the mixed solution obtained in the step 1, and heating in a water bath to 70-80 DEG C under a stirring condition to obtain a viscous mixture; and step 3, sequentially carrying out ultrasonic oscillation, room-temperature aging, drying, roasting and cooling treatment on the obtained viscous mixture to obtain the catalyst, the mass ratio of the HY molecular sieve to the Fe precursor is (1.33-2.67): 1. The prepared wide-temperature vanadium-free denitration catalyst is wide in active temperature range, low in activation temperature and high in denitration efficiency, the composite desulfurization catalyst can be arranged in equipment behind a dust remover and a desulfurization tower, the service mechanical life of the catalyst is prolonged, and the denitration efficiency can reach 95% or above within the range of 200-360 DEG C under the sulfur-free working condition.

The invention belongs to the technical field of biology, and discloses a biological preparation for repelling birds in farmland. The biological preparation comprises rice straw, dolomite, sepiolite, sodium hydroxide water solution, kieselguhr, benzyl acetate, ethyl acetate, methyl anthranilate, camphor oil, jasmine flowers, thyme, typha angustifolia, fennel and water. The biological preparation has good bird repelling effect, is harmless to the birds, environment friendly and free of pollution, and can be applied to bird repelling in the farmland.

The invention provides a recovery method of a noble metal catalyst. The recovery method comprises the following steps of: adding the noble metal catalyst to a methanol and hydrochloric acid mixed solution for reaction, thus obtaining a mixed solution with the noble metal catalyst dissolved; and heating the mixed solution with the noble metal catalyst dissolved obtained from the first step to generate reduction reaction, thus obtaining the reduced noble metal catalyst. The recovery method provided by the invention is environment-friendly and nontoxic, has a high recovery rate, and is simple to operate.

The invention discloses a transfer film and a preparation method thereof, a preparation method of a PEVA decorative film and the PEVA decorative film. The transfer printing film comprises a base material layer, a release layer, a water-based protection layer, an aluminum plating layer and a water-based back glue layer which are sequentially arranged, the transfer printing film is safe and environmentally friendly, and the transfer printing rate of patterns on the aluminum plating layer is high. The PEVA decorative film is prepared by transferring an aluminized pattern onto a PEVA film through the transfer film, and is good in flexibility, good in water resistance and wear resistance and biodegradable.

The invention discloses a method for detecting and analyzing the content of polyphenol in a bear semi-finished product and a bear finished product. The method comprises the following steps of: (1) preparing a tea polyphenol stock solution preparation: soaking tea leaves by using heated distilled water, filtering, taking a clear solution, adding the clear solution into a beer, and mixing for later use; (2) detecting the polyphenol value of a tea polyphenol stock solution sample; (3) analyzing by using a chemical automatic analyzer: editing a program, uniformly mixing reagents, putting the sample into a reaction tank from a sample inlet, and reacting and analyzing by using a detector; (4) making a standard curve: diluting the tea polyphenol stock solution sample according to a certain concentration, and making a standard curve for a detection polyphenol module of the chemical automatic analyzer; (5) pre-treating a sample: degassing, filtering or centrifuging a sample to be detected; and (6) performing detection: detecting the sample to be detected in the detector. By adopting the detection and analysis method disclosed by the invention, an unstable polyphenol detection result caused by the fact that a standard substance is not provided for making a polyphenol standard curve for the chemical automatic analyzer can be avoided, and the method has the advantages of fastness, large sample amount, accuracy, high sensitivity and the like.