363results about How to "Fast growth rate" patented technology

The invention discloses a Grifola frondosa strain for producing polysaccharide with a composite raw material of rice bran and wheat bran, which belongs to the technical field of microbial application technology and food biology. The Grifola frondosa strain JSU10 is preserved in China general microbiological culture collection center (CGMCC) in October 8th, 2010 with the CGMCC No. 4179 and is identified to be Grifolasp. The invention improves the positive mutation rate of the Grifola frondosa strain for rapidly growing and producing Grifola frondosa polysaccharide on a composite culture medium of rice bran and wheat bran by composite mutagenesis of ultraviolet rays and microwave to obtain a high-yield strain; the strain and the original strain are respectively a liquid fermentation rice bran and wheat bran composite culture medium; and hypha dry weight and polysaccharide of the mutated strain are respectively improved by 39.24 percent and 42.58 percent compared with the original strain.

The invention belongs to the fields of microbe application technologies and food biotechnologies, and discloses a strain used for fermenting rice bran and wheat bran extracts for producing grifolan. The grifola frondosa strain is collected in China Center for Type Culture Collection (CCTCC) in Wuhan University in Wuhan, China on Aprial 7th, 2011, and has a strain collection number of CCTCC No: M2011113. The name of the strain is Grifolasp. JSU10-2. According to the invention, through protoplast laser mutation, the strain with high yield of mycelium polysaccharide produced from cheap raw materials is obtained. When the strain and an original strain are respectively used in liquid fermentation of a rice bran and wheat bran composite culture medium, the dry weight and polysaccharide of the mutant strain are respectively increased by 31.7% and 32.6% compared with those of the original strain.

The invention breaks through the restriction of the traditional autotrophic nitrification and anoxic denitrifying metabolism principle, and discloses a method for removing carbon and nitrogen pollutants in waste water in one step according to physiological feature and metabolism principle of heterotrophic nitrification-aerobic denitrification bacteria. In a single biochemical reactor, mixed solution of the heterotrophic nitrification-aerobic denitrification bacteria and active slurry in a certain proportion is inoculated, after a certain period of aeration is performed, nitrogen and organic substances are removed at the same time, and the efficiency of denitrification and carbon removal is high. By using the method, a traditional biochemical treatment system can be updated and transformedwithout constructing a new building based on the traditional biochemical treatment system, and the operation is convenient and fast. The method overcomes the bottleneck problems that the nitrobacteria propagate slowly, the nitrification and denitrification reactions are performed in sections, and the like.

The invention relates to a method for rapidly cultivating chlorella and belongs to the technical field of biology. The cultivation method comprises the following steps: preparing a standard BG-11 culture medium to serve as a basal culture medium of chlorella by taking fresh running water as a solvent; adding a certain amount of organic carbon source and NaHCO3 into the standard culture medium, so that the final concentration is respectively 0.5-1.0g/L and 0.2-0.5g/L; putting the culture medium into a culture vessel, inoculating 10-20 percent of chlorella solution, sealing the opening, and culturing the chlorella solution in an environment with the illumination intensity of 3000-4000Lx, the light-dark ratio of 12h:12h and the temperature of 22-28 DEG C. According to the method, the cell density of the chlorella can reach a high level in a short cultivating cycle and is increased by about six times compared with that cultivated by using the basal culture medium. Meanwhile, the method has the advantages that the process is easy to operate, the culture medium is not required to be sterilized, the pH value of the culture medium is not required to be regulated, and the method can be widely applied to cultivating chlorella in industrial production.

The invention discloses a method for preparing a zirconium diboride coating and relates to a method for preparing a ceramic coating. The invention aims to solve the problems that a gas circuit needs to be subjected to thermal insulation treatment and the requirement of a gas flowmeter is high by adopting a method for heating ZrCl4 to be higher than a sublimation temperature and introducing the ZrCl4 into a reaction chamber through the flowmeter in the process of preparing ZrB2 through a conventional chemical vapor deposition method. The preparation method comprises the following steps: by using a double-temperature-area heating mode, by taking ZrCl4, BCl3 and H2 as source gases, by taking Ar gas or N2 as carrier gas and protective gas, preparing the zirconium diboride coating by adopting the chemical vapor deposition method. According to the method in the invention, the gas circuit needs no special thermal insulation treatment, and the flow of the ZrCl4 can be controlled through a temperature control method. The method can be used for preparing zirconium diboride coating.

The invention discloses Desmodesmus sp. rich in oil, and culture and application thereof. The Desmodesmus sp. is MH-04 preserved in China General Microbiological Culture Collection Center on April 24, 2015, with an accession number of CGMCC No. 10764. The Desmodesmus sp. can tolerate high-concentration CO2 and SO2, is capable of realizing photoautotrophic growth in virtue of exhaust gas or flue gas containing CO2 and SO2 to acquire biomass and has a high carbon sequestration rate; and the obtained biomass is rich in oil and can be used for production of biodiesel.

The invention provides a feed for sea cucumbers. The feed comprises the following components: 50 to 90 weight parts of seaweed powder, 2 to 30 weight parts of zeolite powder and 15 to 40 weight parts of protein powder, wherein the zeolite is clinoptilolite or/and mordenite. The feed for the sea cucumbers is prepared by a method comprising: activating the zeolite, crushing the activated zeolite powder and mixing the activated zeolite powder and other components, and sieving the mixture; or adding water to mix the zeolite powder and other components to form the feed with certain thickness. The feed for the sea cucumbers is the nutritive green feed, which has the advantage of avoiding pollution, high oxygen consumption, drug resistance, residue and toxic and side effects. When the feed is used, the utilization rate high; the nutrient components are hardly lost; and water quality is not deteriorated; and when used as the bait or feed for sea cucumbers, the feed has the advantages that: the survival rate of the sea cucumber juveniles is high; weight incensement of the sea cucumber juveniles is high; and the like.

The invention discloses a biological purification agent applied to sewage of livestock and poultry farms and a preparation method thereof. The preparation method comprises the following steps: firstlyadding a compound microorganism bacterium agent into an immobilized carrier formed by three carriers including sodium alginate zeolite, sodium alginate and polyvinyl alcohol to obtain a bacterium solution, wherein the mass ratio of the immobilized carrier to the compound microorganism bacterium agent is (200-300) to 1, the compound microorganism bacterium agent contains rhodospirillum, nitrifyingbacteria and bacillus subtilis according to a volume ratio of 1 to 1 to 1, and the number of effective living bacteria in per gram of the compound microorganism bacterium agent is greater than or equal to 109; then dropping the bacterium solution into a boric acid saturated solution with 4-8% of CaCl2 to obtain globular immobilized compound microorganisms; finally enabling the immobilized compound microorganisms to stand and cure under the condition of 4 DEG C, carrying out immobilized crosslinking for 24 hours to obtain immobilized microorganism globules, washing the immobilized microorganism globules with deionized water for at least three times to obtain the biological purification agent. The preparation method is simple and is low in cost; the prepared purification agent has strong stability, and high microorganism activity, is environmentally friendly, and is free of secondary pollution.

The invention relates to a high-early-strength filling material for a coal mine goaf. The high-early-strength filling material is prepared from the following components in parts by weight: 10-20 parts of quick-hardening sulphate aluminate cement, 40-80 parts of coal ash, 150-200 parts of coal gangue particles, 1-3 parts of a content-available superplasticizer and 0.1-1 part of a thickener. The high-early-strength filling material is used for filling the coal mine goaf and is remotely pumped, and is high in strength increase speed and filling efficiency, low in filling cost, safe and environmentally friendly. An experiment shows that the early strength of the high-early-strength filling material is high and can reach 10.0MPa, and the compressive strength can reach 18.0MPa in the 28th day.

The invention discloses a preparation method of super-lubricity amorphous carbon film with a nano-structure. The film is prepared by adoption of a radio frequency magnetron sputtering physical vapor deposition technology, and is silicon- aluminum- co-doped amorphous carbon film having super-lubricity performance in a high vacuum environment. The film has the nano netlike and fullerene-like compound nano-structure, and has excellent elastic recovery performance. In addition, even the nano hardness of the film is low and the film belongs to soft film, the film shows excellent frictional wear performance in the vacuum environment, the lowest friction coefficient is 0.001 and the wear rate is reduced to the order of magnitudes of 10<-19> m3/N*m. The film is uniform and compact, and firmly combines metal based materials. The film is a solid lubrication and sealing material, and has a good application prospect with respect to various mechanical motion parts in the vacuum environment.

The invention discloses a method for reinforcing an adsorption-biodegradation (AB) denitrification technology by use of heterotrophic nitrification-aerobic denitrification bacteria and belongs to the technical field of water treatment. The method comprises the following specific steps: when the COD (chemical oxygen demand)/N of sewage is more than 8, the sewage passes through a section A and a section B in turn, feeding the effluent of the section A into the section B and inoculating heterotrophic nitrification-aerobic denitrification bacteria into the activated sludge of the section B; and when the COD/N of the sewage is no more than 8, feeding the sewage into the section A and the section B respectively, independently operating the section A and the section B and inoculating the heterotrophic nitrification-aerobic denitrification bacteria into the activated sludge of the section A and the activated sludge of the section B. By adopting the method, the functions of carbon removal and denitrification are realized under the combined action of the section A and the section B in an AB process system and the denitrification effect and efficiency of sewage treatment can be increased.

The invention relates to plant tissue culture and discloses a tissue culture method for Vaccinium bracteatum Thunb, belonging to the field of plant cultivation. The method comprises the following four steps: explant sterilization; induction culture; propagation culture; and rooting culture. The method has the advantages of a high propagation rate, a fast growth rate and high hereditary stability, overcomes the problem of difficult breeding of Vaccinium bracteatum Thunb, can realize large-scale production and industrial large-scale supply of finished seedlings, protects excellent wild plant resources and brings about good economic values.