987results about How to "Fast degradation" patented technology

The invention belongs to the technical fields of environmental engineering and bioengineering and particularly relates to a sphingomonas strain and applications thereof in the aspects of shortcut nitrification-denitrification of nitrogen-containing industrial waste water and domestic sewage and treatment of a polluted water source. The sphingomonas strain is separated from a Taihu water in China,is a local strain and has high safety; and the strain can be grown in a basic medium, wherein in the basic medium, CO2 is used as a carbon source and energy or CO2 and an organism are used as a mixedcarbon source and energy, and ammonia nitrogen or nitrate nitrogen is used as a nitrogen source. The bacterium liquid, the dormancy cell and the immobilized strain of the sphingomonas can decompose ammonia nitrogen into nitrite nitrogen and simultaneously can decompose the ammonia nitrogen into nitrogen, can be used as denitrification microorganism for converting the ammonia nitrogen into the nitrite nitrogen and the nitrogen, thereby achieving the shortcut nitrification-denitrification. The strain can rapidly decompose the ammonia nitrogen and is suitable for treating the nitrogen-containingindustrial waste water and domestic sewage as well as polluted water source.

The invention relates to a degradation disposable syringe and a method of preparing the syringe. The syringe includes an outer cover, a core pin, a needle seat and a needle cap, which can be degraded in the natural environment. The basic material for degradation is prepared with degradable polymer main material, plasticizer, stabilizer, stabilizing additive and filling compound, etc. The detailed injection molding process for all parts of the syringe is: the injection temperature for a feeding opening is 20 to 60 DEG C; the injection temperature for a compression section is 100 to 200 DEG C; the injection temperature for a measurement section is 130 to 240 DEG C; the injection temperature for a spray nozzle is 130 to 220 DEG C; the mold temperature is 20 to 50 DEG C; the injection pressure is 40 to 200MPa; the injection time is 8 to 90 seconds; the pressure holding time is 0 to 5 seconds; the screw speed is 20 to 180 r/m; all performances of the degradation syringe totally meet the national standard (GB15810-2001). After being abandoned, the syringe does not pollute the environment, prevents illegal recycling, and can totally replace the disposable polyolefin syringes.

The invention discloses a CRISPR (clustered regularly interspaced short palindromic repeats)/Cas9 system and application thereof to construction of swine-derived recombinant cells with insulin receptor substrate gene defects. The invention provides an sgRNA (ribonucleic acid) combination which is composed of sgRNAIRS1-1, sgRNAIRS1-3, sgRNAIRS2-2 and sgRNAIRS2-3. The invention provides a plasmid combination. The plasmid combination is composed of four plasmids, and the four plasmids are respectively subjected to transcription to obtain sgRNAIRS1-1, sgRNAIRS1-3, sgRNAIRS2-2 and sgRNAIRS2-3. Theapplication of the sgRNA combination or the plasmid combination is as follows: preparation of recombinant cells; preparation of a diabetic cell model; preparation of a diabetic animal model. Accordingto the invention, sgRNAIRS1-1 is as shown in SEQ ID NO:8; sgRNAIRS1-3 is as shown in SEQ ID NO:10; sgRNAIRS2-2 is shown as SEQ ID NO:14; and sgRNAIRS2-3 is as shown in SEQ ID NO:15. A solid foundation is laid for the preparation of diabetic pig models, and important application value for the research and development of diabetic medicaments is achieved.

The invention discloses a method for saccharifying a cellulose raw material. A cellulosome secreted by high-temperature thermoanaerobion can effectively reduce degrade crystalline cellulose with a complex structure. By adding low concentration acetate into a culture medium and enzyme reaction buffer solution and filling low concentration hydrogen in a fermentor thereof, the method greatly improves the enzyme reaction speed and sugar accumulation. The method can make the cellulose material which is not subjected to physical or chemical pretreatment directly fermented or subjected to enzyme treatment, and efficiently hydrolyze the cellulose material into reducing sugar.

The present invention belongs to the technical field of seaweed fertilizers, and particularly relates to a seaweed oligosaccharide micro-ecology drip irrigation fertilizer, which comprises, by weight, 10-60% of a seaweed oligosaccharide solution, 10-50% of a molasses solution, 20-40% of a composite microorganism bacterial solution, and 10-40% of large, medium and trace elements, wherein crushed seaweed and water are mixed, a biological lyase is added to carry out enzymolysis so as to obtain a seaweed enzymolysis liquid, and extraction and pressure filtration are performed under an alkaline condition so as to obtain the seaweed oligosaccharide solution. The invention further provides a preparation method of the seaweed oligosaccharide micro-ecology drip irrigation fertilizer. According to the present invention, the effective component in the seaweed is substantially retained, the utilization rate of crops on the nutrients can be substantially improved, the preparation period is substantially shortened, the necessary organic matter and the trace elements can be supplemented, the composite microorganism bacterial solution is added, functions of disease resistance, stress tolerance, phosphorus dissolving, potassium dissolving, and soil physical structure increasing are provided, and various types of soil-borne diseases can be effectively prevented and controlled.

The invention discloses a functional microorganism decomposing agent and a preparation method and application thereof. The functional microorganism decomposing agent is prepared from, by weight, 30%-60% of bacteria, 20%-50% of fungi and 20%-50% of actinomycetes, wherein the effective living bacteria count of each of the bacteria, the fungi and the actinomycetes is more than or equal to 50 millions per gram of the decomposing agent, and the total effective living bacteria count of the bacteria, the fungi and the antinomycetes is more than or equal to 200 millions per gram of the decomposing agent. According to the functional microorganism decomposing agent and the preparation method and application thereof, the production technology is simple, all the bacterial strains are complete and reasonable in proportion, and the decomposing agent is high in decomposing and degrading speed and good in using effect.

A novel usage of poly-L-lactic acid as medical shape memory material is provided. Forming the poly-L-lactic acid to initial shape under the temperature of 190í½210íµ and pressure of 2í½10Mpa to obtain the poly-L-lactic acid with shape memory property. The present invention uses poly-L-lactic acid as medical degradable shape memory material for the first time. It can be widely applied in minor trauma invasive stent, vessel jointing, operation suture line, bone fracture fixation and other medical field.

The invention discloses a method for purifying mariculture wastewater by utilizing a compound microbial inoculant. The method comprises the following steps: (1) screening the compound microbial inoculant which consists of photosynthetic bacteria, nitrobacteria, denitrifying bacteria, candida utilis, lactobacillus acidophilus and bacillus; (2) activating the compound microbial inoculant by utilizing a culture medium: directly adding the strain into the culture medium based on 1% of inoculation amount (w/v), and activating the strain by a shaker at the temperature of 37 DEG C with the speed of 150rpm (revolution per minute) for 24 hours so that the total content of microbes is 7*10<8>-9*10<8>CFUs (colony forming units)/mL; and (3) adding the activated compound inoculant into the treated aquaculture wastewater, wherein the compound inoculant accounts for 0.06%-0.12% of the total weight of the aquaculture wastewater. The method has the advantages of no toxicity and harm on aquaculture animals, simple process, fast organic matter degradation speed, obvious effect, no drug residues and no secondary pollution. Therefore, the method has economic feasibility and is applicable to popularization and application to coastal aquaculture industry.

The invention discloses a poly-lactic acid block copolymer. The feature is that it is made from the end hydroxyl poly-lactic acid with intrinsic viscosity of 0.05-0.5dL/g and aliphatic polyester glycol with intrinsic viscosity of 0.1-1.0dL/g taking fusion reaction under existing of diisocyanate. The intrinsic viscosity of the copolymer is 0.7-2.5dL/g, and tensile strength is 10-40MPa, elongation at break is 100-800%. The invention also discloses the manufacturing method for the copolymer. It has the advantages of good toughness, strong tensile strength, high tensile fracture elongation, etc.

The invention provides a biodegradable resin composition. The biodegradable resin composite comprises the following components in parts by weight: 20-80 parts of carbon dioxide-propylene epoxide copolymer, 20-80 parts of polyester type polyurethane, 0.1-5 parts of a thermal stabilizer, 0.1-5 parts of a lubricant, 0.5-5 parts of a plasticizer and 0.5-10 parts of inorganic filler. The invention also relates to an application of the biodegradable resin composition in preparation of films, sheets, molded goods or fibers. The biodegradable resin composition solves the problem that a general polyurethane material which has a higher melting point cannot be melted with the carbon dioxide-propylene epoxide copolymer easily at the same time; moreover, a product prepared from the biodegradable resin composition provided by the invention has good mechanical properties, is beneficial for long-term storage and long-distance transport, increases the degradation velocity under a composting condition, shortens the composting time after use, and is suitable for preparing biodegradable plastics.

The invention discloses an intelligent preparation system and preparation method for synthesizing a quick-acting and slow-release integrated efficient ecological compound fertilizer through straw microbial fermentation. The system comprises a cutting unit, a fermentation unit, an intelligent control unit, a waste heat recovery unit, a press filtration unit, a grinding and crushing unit, a blending unit, a granulation and drying unit and a finished product sub-packaging unit, wherein the fermentation unit comprises a fermentation tank, a biogas recovery mechanism, a heating mechanism, a heat exchange mechanism, a sprinkling mechanism, an automatic feeding mechanism and a stirring mechanism. The method comprises the following steps: performing sealed fermentation on straws and animal feces; and performing water press filtration on a fermentation product, then performing high-temperature inactivation, adding an appropriate amount of inorganic quick-acting fertilizer and trace element fertilizer, rooting powder, a drought-resistant water retention agent and clay, mixing, and performing granulation and drying to obtain the compound fertilizer. By adopting the system and the method disclosed by the invention, fresh animal feces are used as a leaven which contains a lot of microorganism bacteria and digestive enzymes and can promote biological degradation and decomposition of the straws; and moreover, the animal feces are further fermented to be beneficial for opening unstable ester bonds in straw cellulose, accelerating the degradation of the straws and shortening the fermentation period.

The invention discloses an environment-friendly antibiosis glazing agent and a preparation method thereof. The glazing agent is prepared by filling an environment-friendly antibiosis glazing agent liquid material and a deodorization liquefied petroleum gas into an aerosol sealing tank by a special gas spray filling procedure, and matching with a valve and a pressing head, wherein the formula of the environment-friendly antibiosis glazing agent comprises a cerate, silicon oil, natural solvent oil, a surface active agent, a disinfectant, a preservative, essence, alimentary acetic acid and deionized water. The invention has the advantages that: 1. the solvent system with good environmental performance is selected preferably; 2. glazing effect is good; 3. environment-friendly materials are selected; 4. the product has good antivirus and bacteriostasis effects and strong broad spectrum performance; 5. the use is saved, and the storage is convenient; and 6. the application is wide.

The invention relates to a magnetic oxide supporting active carbon catalytic microwave degradation method of a surfactant. The technical scheme of the method comprises: (a) a magnetic oxide supporting active carbon preparation process comprising dipping active carbon into Fe (NO3)3 or Ni (NO3)2 solution, carrying out a magnetic stirring process for 10 to 13 hours, filtering and collecting precipitates, washing the precipitates to a neutral pH through deionized water, drying, calcining at a temperature of 250 to 350 DEG C for 1 to 4 hours, and cooling to obtain a magnetic oxide supporting active carbon catalyst, and (b) a microwave degradation process comprising adding the magnetic oxide supporting active carbon catalyst obtained from the process (a) into surfactant-containing solution andcarrying out an irradiation process on the mixed solution by a microwave power of 150 to 750 W for 0.5 to 3.0 minutes, wherein a weight ratio of a surfactant to the magnetic oxide supporting active carbon catalyst is 1: (4 to 24). The method provided by the invention is a novel method for processing surfactant-containing wastewater and has the advantages of high degradation efficiency, fast degradation speed, low cost, no secondary pollution and the like.