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31results about How to "Quick death" patented technology

Oligomeric quaternary ammonium salt bactericide and preparation method thereof

The invention relates to an oligomeric quaternary ammonium salt bactericide and a preparation method thereof. Ester p-toluenesulfonate-based gemini quaternary ammonium salt, guanidine hydrochloride and sodium alkoxide are added into solvent, stirred and heated to 120 DEG C to 180 DEG C, heating is stopped after 10 to 48 hours of reaction, so that a crude product is obtained, and after post-treatment, the oligomeric quaternary ammonium salt bactericide is obtained; and the substance amount ratio of the ester p-toluenesulfonate-based gemini quaternary ammonium salt, the guanidine hydrochloride and the sodium alkoxide is (0.008 to 0.040):0.008:0.008. The gemini quaternary ammonium salt is introduced to a plurality of active sites, eight active sites are contained in the structure of the oligomeric quaternary ammonium salt bactericide, the oligomeric quaternary ammonium salt bactericide can show good water solubility and surface activity in aqueous solution, and an important role is played in the process of oligomeric quaternary ammonium salt preparation. A bacteria killing test on three types of bacteria, i.e. sulfate reducing bacteria, iron bacteria and saprophytic bacteria, indicates that the oligomeric quaternary ammonium salt bactericide has a good bactericidal effect.
Owner:SHAANXI UNIV OF SCI & TECH

Breeding and seedling culture method for Sims Azalea

The invention discloses a breeding and seedling culture method for Sims Azalea, and belongs to the technical field of plant seedling culture and breeding. The method comprises the specific steps thata cutting substrate is put in a nutrition pot, and the nutrition pot is thoroughly drenched with a potassium permanganate solution; cutting and selection are conducted in early morning, and healthy and strong branches, which have axillary buds but no diseases or pests, on the periphery of a tree crown are collected; the branches with the length of 8-12 centimeters starting from the tops of stem shoots are selected, the cuttings are bundled into one bundle, and the lower end of the bundle is put into a root culture solution for soaking; straight cutting is conducted, after cutting, the part, around the cuttings, of the substrate is compressed, and the substrate is thoroughly irrigated; drop-arch covering is conducted with a thin film to form a tunnel; a cutting environment keeps suitable relative humidity and temperature, and chlorothalonil is periodically sprayed to the cuttings. The cutting environment is excellent, callus formation can be promoted, the surviving rate of the cuttingsis high, the rooting and germinating rate is high, and the disease-resistant ability of the cuttings can be improved.
Owner:金华市泽雨园艺技术有限公司

Blue algae scavenger using float stone as carrier and preparation method thereof

The invention belongs to the field of water pollution treatment, in particular relates to a water body algae scavenger and a preparation method thereof. A blue algae scavenger taking floatstone as a carrier is characterized in that the blue algae scavenger is prepared by a cerous nitrate solution, a sodium hydroxide solution and lumpish floatstone raw materials, wherein the addition amount of the sodium hydroxide solution is 1 to 5 percent of the volume of the cerous nitrate solution, and the addition of the lumpish floatstone is 5 to 10 percent of the total mass of the cerous nitrate solution and the sodium hydroxide solution; the mass concentration of the cerous nitrate solution is between 0.2 and 0.5 percent, and the mass concentration of the sodium hydroxide solution is between 5 and 10 percent; and the lumpish floatstone is obtained by crushing floatstone into lumps with the diameter between 0.5 and 3 centimeters, stirring and cleaning the lumps for 1.5 to 2.5 hours by the sodium hydroxide solution with the mass concentration between 8 and 12 percent, cleaning the lumps into neutrality and drying the lumps. The blue algae scavenger prepared by the method has the advantages of good blue algae removal effect, quickness in taking effect, low cost and no secondary pollution.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Muscovy duck reovirus cohabitation infection occurrence model and construction method thereof

The invention belongs to the technical field of animal infection and discloses a Muscovy duck reovirus cohabitation infection occurrence model and a construction method thereof. The Muscovy duck reovirus cohabitation infection occurrence model is characterized in that susceptible young Muscovy ducks are artificially injected with a 106TCID50 Muscovy duck reovirus YB isolated strain through leg intramuscular injection, injection infected young Muscovy ducks in a certain proportion are taken as infection sources and put into a susceptible experimental young Muscovy duck group to simulate a 'fecal-oral' natural transmission route of Muscovy duck reovirus so as to cause infection of susceptible experimental young Muscovy ducks. According to results, three days later after artificial leg intramuscular injection infection, cohabitation infection is performed under the condition that a ratio of artificial injection infected young Muscovy ducks to cohabitation infected experimental young Muscovy ducks is 2:5, a disease course of the experimental young Muscovy ducks in cohabitation infection with MDRV (Muscovy duck reovirus) has a disease course development process of typical clinical MDRVinfection, and clinical symptoms, anatomy variation, the incidence rate and the fatality rate are uniform with those of clinical natural infection. The practical model is provided for Muscovy duck reovirus infection related research according to the results.
Owner:FUJIAN AGRI & FORESTRY UNIV

Blue algae scavenger using float stone as carrier and preparation method thereof

The invention belongs to the field of water pollution treatment, in particular relates to a water body algae scavenger and a preparation method thereof. A blue algae scavenger taking floatstone as a carrier is characterized in that the blue algae scavenger is prepared by a cerous nitrate solution, a sodium hydroxide solution and lumpish floatstone raw materials, wherein the addition amount of thesodium hydroxide solution is 1 to 5 percent of the volume of the cerous nitrate solution, and the addition of the lumpish floatstone is 5 to 10 percent of the total mass of the cerous nitrate solution and the sodium hydroxide solution; the mass concentration of the cerous nitrate solution is between 0.2 and 0.5 percent, and the mass concentration of the sodium hydroxide solution is between 5 and 10 percent; and the lumpish floatstone is obtained by crushing floatstone into lumps with the diameter between 0.5 and 3 centimeters, stirring and cleaning the lumps for 1.5 to 2.5 hours by the sodiumhydroxide solution with the mass concentration between 8 and 12 percent, cleaning the lumps into neutrality and drying the lumps. The blue algae scavenger prepared by the method has the advantages ofgood blue algae removal effect, quickness in taking effect, low cost and no secondary pollution.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
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