169results about How to "Improve biological characteristics" patented technology

The invention relates to a fertilizer capable of improve the tobacco soil and promote the growth of roots. The fertilizer comprises the following components by weight percent: 60-90% of humus type organic carrier, 4-10% of rooting powder or root growth promoter, 2-5% of plant growth hormone, 2-5% of potassium sulfate and 2-10% of secondary element / trace element fertilizer. By using the fertilizerof the invention, the soil can be improved, the soil organic matters can be increased, the soil organic and inorganic composites can be improved, the water-stable aggregate structure is easy to form,the supply of soil nutrients can be coordinated, the growth of plant roots can be promoted, the effectiveness of nutrients in soil can be increased, the potassium content of plant tissues can be increased, the organic matters of the tobacco soil can be increased, the effectiveness of nutrients in the tobacco soil can be increased, the growth of tobacco can be promoted, the potassium content of tobacco leaves can be increased, the quality of the flue-cured tobacco leaves can be improved, and the fragrance of tobacco leaves can be increased. By using a defined amount of the fertilizer of the invention, the absorption of the flue-cured tobacco to heavy metals such as arsenic can be reduced, the heavy metal enrichment factor of the flue-cured tobacco can be reduced and the contents of heavy metals such as arsenic in soot and smoke can also be reduced.

The invention discloses a remediation method of organic contaminant-heavy metal compound contaminated soil. The remediation method comprises the following steps: adding persulfate into organic matter-heavy metal compound contaminated soil, and on the basis of effective oxidative degradation of organic contaminant, further using iron-based biochar for passivating heavy metals after playing an activating effect so as to achieve effective remediation of the organic matter-heavy metal compound contaminated soil. Compared with the method for remedying contaminated soil with single contamination by using the biochar or the persulfate, the remediation method provided by the invention has the advantages as follows: two methods are combined for remedying organic matter-heavy metal compound contamination, the persulfate is used for oxidizing organic matters and can fully mineralize the organic matters; for heavy metal contaminated soil, the persulfate can oxidize the heavy metals, and reduces the pH of the soil to cause an increase in the concentration of effective-state metal; the biochar fixes the heavy metals to the surface through adsorption, so that the bioavailability of the heavy metals is reduced.

The invention provides a production process of a biological-organic-inorganic ternary compound fertilizer which is prepared by the following steps: mixing crop stalks, such organic components as livestock manures and active biological agents, regulating the carbon nitrogen ratio from 26 to 35, PH from 5.5-8.2 and moisture from 40% to 65% according to the organic matter contents of the crop stalksand the livestock manures, fermenting the mixture at minus15-75 DEG C for 20-50 days and ensuring the living bacteria count to be 0.03-0.2 billion / g, carrying out turning and oxygenating, fermenting in deep tanks and grinding on the mixture to prepare the biological organic fertilizers, mixing the biological organic fertilizers with the inorganic fertilizers and trace elements and simultaneously adopting the low-temperature drying process after extruding granulation and the biological agent spraying and cooling technology. The method can greatly shorten the decay period, ensure little nutrientloss and little generating capacity of sour gases in the processes of fermentation and decay and complete decay and fermentation, can enhance the stress resistance of the crops, ensure obvious disease-resistant effects and high survival rates of specific functional bacteria and has wide application. Through field contrast tests, both the production and income are increased by 10-25% by applying the biological organic fertilizer.

The invention relates to a preparation of nano particles with gold coating iron oxide star-shaped core-shell structure, imaging and thermotherapy application thereof. The preparation method comprises the following steps: preparing PEI coating silver nano seed; synthesizing iron oxide nano particles having silver seed by a one-step hydrothermal method; preparing the star-shaped composite nano particles in a gold growth solution; and modifying polyethyleneimine (PEI) and hyaluronic acid (HA) on the surface of the star-shaped composite nano particles. The preparation has the advantages of mild reaction condition, simple technology and easy operation. The prepared nano particles with the gold coating iron oxide star-shaped core shell structure has good molecular imaging performance and thermotherapy antineoplastic effect, and has latent application value on in vivo tumour imaging diagnosis and photo-thermal treatment fields.

The invention provides a special slow control / release fertilizer for an eggplant. The fertilizer is characterized by comprising, in terms of mass percent, 0.05% to 0.08% of n-butyl triamine thiophosphate, 0.05 to 0.08% of hydroquinone and 0.24 to 0.28% of dicyandiamide. According to the invention, the special slow control / release fertilizer is prepared by combining macro-element, medium-element and trace-element fertilizers like nitrogen, phosphorus, potassium, calcium, magnesium, molybdenum, boron, zinc and iron with organic fertilizers like high-quality decomposed rapeseed dregs, chicken manure and grass carbon, adding a urease inhibitor and a nitrification inhibitor and carrying out mixing; the special slow control / release fertilizer has a slow release effect in soil, is rich in a variety of nutrient elements needed in growth of the eggplant, can meet demands of the eggplant for nutrients in different growth and development phases for a long time and effectively improves output of the eggplant.

The invention provides a premixed calcium silicate based root canal filling material with suspension stability as well as a preparation method and an application thereof. At least one calcium silicate compound is used as a main phase, and at least a second phase for improving solidification performance, at least one nonaqueous phase solvent which can be mixed with water, at least one suspension stabilizing agent and at least one radiopaque material are added in order to prepare the root canal filling material with excellent injectable performance. An inorganic dispersant with suspension stabilizing effect is added into the premixed type calcium silicate based root canal filling material system, based on reservation of excellent biological compatibility, biological activity, marginal sealability, and the like of the calcium silicate material, layering, deposition or flocculation of the premixed system are effectively prevented, long-term dispersion stability of the premixed paste is improved, and the material can be used as a filling material for dental pulp capping, root canal therapy, and other dental restoration fields.

The invention provides an induced culture method of liver cells, particularly provides a method for directional induced differentiation of human umbilical cord mesenchymal stem cells into liver cells and more particularly relates to a method for staged directional induced differentiation of human umbilical cord mesenchymal stem cells into liver cells by extracting human umbilical cord mesenchymal stem cells from abandoned umbilical cords through a cell climbing sheet technique, culturing the extracted stem cells, and adding an epidermal growth factor, dexamethasone, a liver cell growth factor, oncostatin and the like.

The invention discloses a 3D printing device and method of tissue engineering scaffolds. The device comprises a printing module, a spray-coating module, a cell implantation module, a printing platform and a temperature control module. The printing module is a squeezing printing device composed of one or more sprayer devices, and is used for squeezing printing of the tissue engineering scaffold with a three-dimensional macrostructure. The spray-coating module is a spray-coating device provided with one or more nozzles, and is used for forming the tissue engineering scaffold with a two-dimensional macrostructure. The cell implantation module is an ink jet printing device with one or more nozzles and used for spraying micro-droplets containing seed cells so as to complete implantation of cells and growth factors corresponding to the tissue engineering scaffolds. The printing platform is located under the printing module, and the tissue engineering scaffolds are formed on the printing platform. The temperature control module is used for providing an environment-controllable printing environment. The tissue engineering scaffolds which are made of various materials, formed at a time through various technologies are complex in structure can be obtained.

The invention discloses a device and method for planting fast-growing plants and replacing chemical fertilizers with plant composts. The plant composts replace the fossil energy sources in the chemical fertilizer production process to achieve negative growth of atmospheric greenhouse gases, adjust the greenhouse effect, inhibit the formation of hazes, solve the related environmental problems, improve the soil structure and improve the soil fertility. The method comprises the following steps: (1) planting and / or cultivating fast-growing plants in the selected land area or water body area; (2) harvesting when the fast-growing plants grow to an appropriate height; (3) performing drying on the harvested fast-growing plants, and preferably performing natural drying; (4) processing the dried fast-growing plants into carbon-storage sections; (5) keeping the molded plant carbon-storage sections under sealed conditions; (6) processing the fast-growing plants and carbon-storage sections thereof into organic fertilizers, and converting nitrogen-containing gases generated during the process into nitrogen-containing fertilizers (ammonia water).

The invention relates to fertilizer, in particular to instant macroelement water-soluble fertilizer capable of increasing the soil organic matter content. The instant macroelement water-soluble fertilizer capable of increasing the soil organic matter content is prepared form components in parts by weight as follows: 100-200 parts of concentrated molasses yeast powder, 8-15 parts of poly potassium aspartate, 50-80 parts of citric acid, 3-10 parts of chitin, 30-50 parts of potassium carbonate, 10-30 parts of boric acid, 150-300 parts of urea, 200-400 parts of anhydrous dipotassium phosphate and 180-280 parts of ammonium polyphosphate. The fertilizer can be quickly dissolved, is fully water-soluble, can be applied to facility agriculture such as sprinkling and drip irrigation and the like and realizes integration of water and fertilizer and the efficiency of saving water, fertilizer and labor. The fertilizer can provide organic matters and various macroelement nutrients for soil and crops after usage.

The invention provides an anti-interleukin 17A(IL-17A) antibody and a preparation method and application thereof. Particularly, the invention provides a new anti-IL-17A monoclonal antibody. The anti-body can be combined with an IL-17A antigen highly specifically, has very high appetency and very low immunogenicity and can be used for preparing medicines for preventing or treating IL-17A-related diseases, such as various inflammations or autoimmune diseases.

The invention discloses chitosan / polylysine dendritic macromolecular core-shell nanoparticles and a preparation method thereof. The chitosan / polylysine dendritic macromolecular core-shell nanoparticles are characterized in that the chitosan / polylysine dendritic macromolecular core-shell nanoparticles are of a chitosan derivative formed by carrying out an amidation reaction on an amino on chitosan with the weight average molecular weight of 5*10<4> to 2*10<5> and the deacetylation degree of 85 percent to 100 percent, and carboxyl on a polylysine dendritic macromolecule. The method disclosed by the invention comprises the following steps: preparing the chitosan into a chitosan water solution with the concentration of 0.5mg / ml to 5mg / ml and marking the chitosan water solution as a solution A; stirring at the speed of 500rpm to 1000rpm at 20 DEG C to 35 DEG C under the protection of nitrogen gas, and dropwise adding the solution A into a DMF (Dimethyl Formamide) solution of the polylysine dendritic macromolecule, EDC (Dichloroethane) and HOBt (Hydroxybenzotriazole); continually stirring and reacting for 2 days to 5 days; dialyzing for 2 days to 4 days, and freezing and drying to obtain a product. The praparation method is simple, has moderate reaction conditions and is easy to control.

The invention discloses a temperature sensitive polymer material with biodegradability and biocompatibility. A preparation method of the material comprises the following steps of: firstly synthesizing monomers with specific structures by using the basic raw materials including lysine, tartaric acid, and malic acid, and carrying out polymerization reaction on the monomers with different ingredients to prepare the heterochain type polymer material. The polymer not only has good temperature sensitivity, but also has good biodegradability and biocompatibility. The preparation method disclosed by the invention is simple and easy to implement and has good industrial prospect.

The invention provides a preparation method of an intelligent amphoteric ion polymer material. The preparation method comprises the following steps: (1) dissolving an amphoteric ion monomer, a functional monomer, an enhancing agent, a crosslinking agent and a catalyst into water; then dropwise adding an accelerant at 20 to 40 DEG C and reacting; (2) raising the temperature to 40 to 55 DEG C and continually reacting until a system does not flow obviously; then gradually raising the temperature and drying to obtain the intelligent amphoteric ion polymer material. According to the method providedby the invention, a betaine monomer is used as a main raw material to prepare an intelligent high molecular material with shape memory, self-repairing and anti-pollution functions and the like.

The invention provides an odorless organic fertilizer and a preparation technology thereof. The odorless organic fertilizer is prepared from the following raw materials: wheat straws, corn stalks, beanstalks, oilseed rape stalks, soybean meal, cottonseed meal, distillers grains, vinegar residues, cassava residues, sugar residues, cow dung, sheep dung, horse dung, black stump chalk and powdered rock phosphate, and in parts by weight the raw materials are as follows: 20-25 parts of wheat straws, 20-25 parts of corn stalks, 15-16 parts of beanstalks, 12-14 parts of oilseed rape stalks, 3-5 parts of soybean meal, 1-2 parts of cottonseed meal, 2-4 parts of distillers grains, 1-2 parts of vinegar residues, 3-5 parts of cassava residues, 1-2 parts of sugar residues, 8-10 parts of cow dung, 8-10 parts of sheep dung, 8-10 parts of horse dung, 30-35 parts of black stump chalk and 30-35 parts of powdered rock phosphate. The odorless organic fertilizer is thoroughly decomposed without heating the roots and buds, prevents plant diseases and insect pests from occurrence, and is high in nutrient content and odorless during fertilizing.

The invention discloses a soil heavy metal cadmium copper biodegradation agent and a preparation method thereof. The soil heavy metal cadmium copper biodegradation agent comprises the main components including a WH5 strain, a WH6 strain, a WH7 strain, a WH4 strain, furnace ash, vermiculite and an active organic material. The preparation process of the soil heavy metal cadmium copper biodegradation agent comprises the following steps of: mixing the WH5 strain, the WH6 strain, the WH7 strain and the WH4 strain into a WH colony in proportion; carrying out secondary strain culture on the WH colony through a WH colony secondary culture medium; finally mixing the furnace ash, the vermiculite, the active organic material and the active bran bacteria of the WH colony according to a formula, fermenting at normal temperature for more than 10 days, crushing, and packaging to prepare the soil heavy metal cadmium copper biodegradation agent. The soil heavy metal cadmium copper biodegradation agent disclosed by the invention achieves an outstanding effect on degrading heavy metals, namely cadmium and copper which are contained in soil.

The invention discloses an amphiphilic graphene quantum dot material, a preparation method thereof, fluorescent coding anti-counterfeiting ink based on the amphiphilic graphene quantum dot material and a preparation method of the fluorescent coding anti-counterfeiting ink. Hydrophobic citrate is used as a carbon source, hydrophilic amino alcohol is used as a nitrogen doping agent, and the amphiphilic graphene quantum dot material with hydrophobic ester groups and hydrophilic alcoholic hydroxyl edge groups is prepared through carbonization treatment. The prepared amphiphilic graphene quantum dot material has a high fluorescence quantum yield and good light, heat and chemical stability, and can be dispersed in various polar and non-polar solvents. Under certain conditions, the amphiphilic graphene quantum dot material can form an aggregate on the surfaces of a solution and a solid, and fluorescence emission of the amphiphilic graphene quantum dot material is changed from a single peak tomultiple peaks. The aggregation degree and aggregation state of the amphiphilic graphene quantum dot material are regulated and controlled, so that the fluorescence emission intensities of the amphiphilic graphene quantum dot material at different wavelengths are correspondingly changed, and the fluorescence coding marking based on the fluorescence intensity ratio is realized.

The invention discloses a preparation method of a compound glass nanopore and application of the compound glass nanopore to biomolecular detection. The preparation method comprises the following specific operation steps of 1, preparing a glass nanopore; 2, modifying phospholipids on the glass nanopore prepared in the step 1; 3, preparing the compound glass nanopore; and 4, measuring current data between electrodes with the glass nanopore modified with the phospholipids provided with SWCNT in an inserted manner through a picoammeter and a patch clamp and recording the current data. According tothe preparation method, the glass nanopore is pulled by utilizing a glass puller, and the phospholipids provided with the SWCNT in an inserted manner are modified in the glass nanopore through the capillary phenomenon of nanopores. The operations of ultrasonically cutting the long-time purified SWCNT and utilizing a microinjection probe to insert the SWCNT into bimolecular layers of the phospholipids are not required, so that the method is simple. The current signal changes of different biomacromolecules can be measured through a specific pore of the compound glass nanopore, so that the compound glass nanopore is suitable for detecting the other different target molecules, has universality and is beneficial for application and popularization.

The invention belongs to the technical field of a plant fertilizer, and particularly relates to a special fertilizer for a longan tree and a preparation method thereof. The special fertilizer is prepared by adopting the following raw materials in parts by weight: 35 to 40 parts of excrement of livestock, 25 to 30 parts of starch slag, 20 to 25 parts of mildew feed, 10 to 15 parts of cotton seed meal, 10 to 15 parts of edible mushroom dregs, 5 to 10 parts of humic acid, 155 to 175 parts of urea, 160 to 180 parts of potassium chloride, 50 to 70 parts of potassium magnesium fertilizer, 90 to 100 parts of calcium superphosphate, 10 to 15 parts of lignin, 7 to 9 parts of amino acid chelated copper and boron, 7 to 9 parts of cane sugar complexed manganese and calcium, 3 to 5 parts of diaminoferric xanthohumate and 4 to 6 parts of lignin zinc sulfonate. The special fertilizer is comprehensive in nutrition and stable and lasting in fertilizer efficiency; when the prepared fertilizer is used for fertilizing the longan tree, the nutrition requirement of the longan tree can be met, the growth speed of the longan tree can be increased, the yield and quality of longan can be improved, the characteristics of the soil can be improved, the formation of a soil cluster structure can be promoted, the soil is loosened, the soil structure is improved, the soil fertility is improved, and the environmental protection value and economic benefit are remarkable.

The present invention discloses a carbon-based composite biological fertilizer. The carbon-based composite biological fertilizer is prepared from the following raw materials in parts by weight: 20-60parts of biochar, 10-30 parts of plant ash, 8-25 parts of medical stone powder, 3-15 parts of zeolite powder, 2-8 parts of potassium feldspar powder, 1-6 parts of ground phosphate rock, 15-45 parts ofhumic acid, 1-10 parts of potassium fulvate and 1-15 parts of photosynthetic nitrogen fixation composite bacteria. The carbon-based composite biological fertilizer gives full play to the respective advantages of photosynthetic nitrogen fixation composite bacteria, biochar, plant ash, medical stone powder, zeolite powder, potassium feldspar powder, ground phosphate rock, humic acid and potassium fulvic acid, not only realizes effective improvement and remediation of soil and improves the crop yield, but also is beneficial to promoting the development of green low-carbon agriculture. The invention also provides a preparation method of the carbon-based composite biological fertilizer, which is simple and convenient to operate and convenient for batch production. The invention also provides application of the carbon-based composite biological fertilizer, and the carbon-based composite biological fertilizer is compounded with one or more of decomposed manure, an organic fertilizer, slag, biomass pyrolysis residues or crop wastes according to different types of soil, so that the fertilizer efficiency is exerted.

An immunoadsorption column for blood cleaning therapy is prepared through proportionally mixing protein A and L-histidine ligand, homogenizing and filling the mixture in column. Its advantages are high adsorption power to IgG, high stability and long service life.

The invention belongs to the technical field of clinical immunology, and concretely discloses a H7 avian influenza virus monoclonal antibody and an application thereof. The monoclonal antibody is secreted by a hybridoma cell 1H11, and the hybridoma cell is preserved in CCTCC with the preservation number of CCTCC NO:C2017112. The monoclonal antibody has the advantages of high titer, good specificity and good blocking effect, and can be used for preparing an H7 subtype avian influenza blocking ELISA antibody detection kit. The kit is used for testing a sample to be tested, and has a coincidence rate of 98% or above with HI test; and compared with the HI, the kit has the advantages of shortening of the test time, and simple operating steps.

The invention provides an SAR image ship target identification method based on a pulse neural network, and the method employs a visual saliency map extraction method based on a visual attention mechanism, can enhance the image features, removes the noise influence of speckles, and improves the generalization capability and robustness of a model; then, pulse coding with the step length being T is carried out on the visual saliency map through a Poisson encoder, and a discrete pulse time sequence is obtained so that information can be transmitted by a subsequent network conveniently; then, a convolutional neural network and LIF spiking neurons are utilized to construct a spiking neural network model, better biological characteristics are given to the neural network, and then the information transmission process of the brain can be simulated more accurately; and finally, by using a substitution gradient training method, the problem that the pulse neural network model is difficult to optimize by using gradient descent and back propagation is solved. The method can accurately identify the ship target, and has the advantages of high efficiency and energy conservation.

The invention discloses high-performance bio-based composite film and a preparation method thereof, and belongs to the technical field of functional materials. The method mainly adopts polylactic acidas matrix, and uses cellulose nanocrystal as a reinforcing filler, composite fiber film is prepared by an electrospinning method, the addition of the cellulose nanocrystals can increase the storage modulus of the composite film by up to 500%, after water is absorbed, the storage modulus can be increased by up to 900%, the storage modulus of the composite film is obviously improved, pores are larger, cells can be effectively adsorbed and grown on the fiber film, the mechanical strength is also improved, and the addition of the the cellulose nanocrystals further broadens the application of polylactic acid in the field of biomedicine. The method uses an acid hydrolysis method to prepare the cellulose nanocrystals, cellulose raw material sources are wide, the acid hydrolysis method is simpleand easy to operate, and a product price is low. The film functions as a medical stent to promote drug absorption and cell growth.

The invention discloses a method for improving development, growth and survival of plants or crops. The method includes the steps of firstly, placing seeds of plants or crops in a closed environment; secondly, regulating the radiant power of irradiation through the preset relation between the irradiation distance and the radiant power by means of a biological spectrum with the wavelength between the wavelength of ultraviolet light and the wavelength of weak microwaves or electromagnetic waves with the wavelength within the range of the biological field of the electromagnetic waves under the condition that the temperature is 5 DEG C to 60 DEG C, and conducting irradiation on the seeds through the biological spectrum; thirdly, regulating and improving the cell regulating and control level and the molecule regulating and control level in the seeds so that the factors influencing the development, growth and survival states of plants or crops can be improved. Gene and molecule structures of plants or crops are kept, improved and regulated on the basis of not producing gene mutation, the biological characteristics of the seeds of plants or crops are changed and improved, quality of the seeds is improved and perfected, and therefore yield and quality of plants or crops are improved, and nutritive value of plants or crops is improved.

The invention discloses a bionic spiral anchor mouth profile generation method. The method comprises determination of an anchor mouth inner profile line, an anchor mouth top end profile line, an anchor mouth bottom end profile line, an anchor mouth inner notch profile line and an anchor mouth inner notch rotating center trajectory line; the anchor mouth inner profile line is scanned along curved lines of the anchor mouth top end profile line and the anchor mouth bottom end profile line to obtain an anchor mouth inner profile surface; the anchor mouth top end profile line and the anchor mouth bottom end profile line respectively rotate by 90 degrees in the left-right direction along the anchor mouth inner profile surface to perform the variable section scanning, after profiles obtained by scanning are joined, an anchor mouth external profile is obtained; and then, the anchor mouth inner notch profile line rotates by 360 degrees along the anchor mouth inner notch rotating center trajectory line to obtain an anchor mouth internal profile. The anchor mouth internal profile surface has an excellent spiral structure to facilitate to design and manufacture an anchor mouth, and in particular, to provide theoretical basis for the casting process; and the internal of an anchor mouth is grooved to facilitate to weld the anchor mouth and an anchor table surface.

The invention discloses a method for making living tissues and organs. The method is characterized by comprising the following steps: calculating medical image information, and converting the medical image information into three-dimensional image information; performing three-dimensional reconstruction of outer original appearances and inner micro-structures of the tissues and organs in combination with a reference structure in a tissue and organ database; and making the tissues and organs by adopting a material additive making process according to a three-dimensional mode, properly processing the surface of a physical model, and making the living tissues and organs through 3D printing. The method has the benefits that: the making speed of the living tissues and organs is rapid; the shapes of the inner micro-structures are precise; the bionic degree is high; the biological rejection is low; the medical biological nature is good; related technology gaps can be filled up; and particularly, relatively high social benefits and economic benefits can be generated.

The present invention provides an interleukin 17A (IL-17A)-targeting antibody, a preparation method and applications thereof, particularly a new anti-IL-17A monoclonal antibody. According to the present invention, the antibody can bind to IL-17A antigen in a high-specificity manner, has high affinity and low immunogenicity, and is used for preparing drugs for prevention or treatment of IL-17A related diseases such as various inflammations or autoimmune diseases.

The invention discloses a soil restoration agent with a heavy metal pollution treatment function and a fertilizing function and a preparation process of the soil restoration agent. The soil restoration agent is mainly prepared from the following raw materials in parts by weight: 260 to 310 parts of organic fertilizer, 25 to 31 parts of microbial agent, 0.03 to 0.07 part of difenoconazole, 0.05 to 0.1 part of pyrethrum, 0.03 to 0.09 part of rotenone, 0.04 to 0.08 part of chlorothalonil and 0.02 to 0.06 part of lactobacillus plantarum. The organic fertilizer is used as a main raw material, the microbial agent, insecticidal and sterilized vegetable drug and chemicals capable of alleviating the harm of soil heavy metal are added, so that not only can the fertilizer effect of the soil be improved, but also the soil restoration agent can enter the soil deeply to improve the heavy metal pollution and prevent the disease and insect pests.