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253results about How to "Improve stress tolerance" patented technology

Coprophilous fungus composition and preparation method and purpose thereof

The invention provides a coprophilous fungus composition. According to the invention, fresh night soil of adult health pig is taken as a manure source, a coprophilous fungus final suspension is prepared by three-time centrifugation under specific low-temperature condition, a high molecular weight compound protective agent skimmed milk powder and a low molecular weight compound protective agent (glycerin, lactose, galactose, cane sugar, glucose, maltodextrin, sorbitol, adonitol and trehalose) are added, the coprophilous fungus composition is produced, which contains abundant Bacillus spp, lactic acid bacteria, lactobacillus, bifidobacteria, and streptococcus thermophilus, live bacteria number is kept at 108 CFU/g and more, the coprophilous fungus composition is used for preventing and treating diarrhoea of pigling at a lactation period, the prevention and treatment effects are obvious, the coprophilous fungus composition has more obvious effect for preventing and treating diarrhoea of pigling with 0-14 days (21-28 days early-stage weaning method) and 0-21 days (35 days weaning method). The preparation method of the coprophilous fungus composition is simple, the product shelf-life is long, the defect that the current coprophilous fungus transplant requires real-time preparation in the prior art, and the coprophilous fungus composition is suitable for industrial production.
Owner:CHONGQING ACAD OF ANIMAL SCI

Flexible composite tube and manufacturing method thereof

The invention discloses a flexible composite tube and a manufacturing method thereof, and belongs to the technical field of pipelines. The flexible composite tube comprises an inner layer tube, a reinforcing layer and an outer layer tube. The inner layer tube is made of polyvinylidene difluoride, polyethylene, polyethylene stem grafting difluoro maleic anhydride, ethylene-propylene polymer and antioxygen. The reinforcing layer is made of long-fiber reinforced resin matrix prepreg tapes. The outer layer tube is made of polyethylene or polypropylene. The manufacturing method for the flexible composite tube comprises the step of manufacturing the inner layer tube, the step of manufacturing the reinforcing layer and the step of manufacturing the outer layer tube. The inner layer tube made of the polyvinylidene difluoride, the polyethylene, the polyethylene stem grafting difluoro maleic anhydride, the ethylene-propylene polymer and the antioxygen is adopted, so that the flexible composite tube has a good high-temperature resistant property, a good barrier property and a good anti-swelling property. The creep deformation of the inner layer tube can be effectively avoided, the long-fiber reinforced resin matrix prepreg tapes adopted in the reinforcing layer have a good binding capability with the inner layer tube, and the layering of a pipeline can be effectively avoided. Meanwhile, the flexible composite tube has the advantages of being simple in structure, low in cost, simple in manufacturing method and the like, and has wide application prospects.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1

Method for improving crop stress resistance by using hydrogen sulfide donor sodium hydrosulfide

The invention provides a method for improving crop stress resistance by using hydrogen sulfide donor sodium hydrosulfide. The method for improving the crop stress resistance by using the hydrogen sulfide donor the sodium hydrosulfide includes the steps of: soaking seeds in a sodium hydrosulfide solution with the concentration to be 0.01-1.6 millimole per litre for 6-24 hours and at the temperatureof 25-30 DEG C before sowing; or conducting plant root irrigation with the sodium hydrosulfide solution of the concentration of 0.01-1.6 millimole per litre in a seedling stage and replacing the treatment solution every 6 to 24 hours and replacing continuously for 2 to 5 times; or spraying on the foliage at different stages of stress with the sodium hydrosulfide solution of the concentration of0.01-1.6 millimole per litre during plant maturity. With different application methods and a certain concentration of sodium hydrosulfide solution according to different plants at different growth stages and different periods of stress, the method for improving the crop stress resistance by using the hydrogen sulfide donor the sodium hydrosulfide has the advantages of improving seed germination rate, increasing plant biomass, adjusting the chlorophyll content required for plant photosynthesis, alleviating the problems, caused by the stress, of plant water loss, photosynthetic rate, stomatal conductance, and intercellular carbon dioxide concentration and transpiration rate changes, and improving crops' ability to resist stress.
Owner:NANJING AGRICULTURAL UNIVERSITY

Method for improving stress resistance of chrysanthemum through trans-CgHSP70 genes

The invention belongs to the field of plant gene engineering and transgenic breeding, and relates to a method for improving the stress resistance of cut chrysanthemum through trans-CgHSP70 genes. CgHSP70 established plant expression vectors obtained by cloning from Zhongshan purple cinnamon of the chrysanthemum are transferred into the cut chrysanthemum by using an agrobacterium-mediated method for cultivation so as to initially obtain resistant plants, and positively transferred plants are obtained through the screening of hygromycin resistance; PCR (polymerase chain reaction) and fluorescence quantitative PCR analysis is performed on converted plants to prove that endogenous genes are transferred into genome DNA of transgenic plants and transcription occurs; and the resistance analysis on the offsprings of the transgenic plants proves that the resistance to high temperature, drought and high salt is obviously improved. In the invention, the stress resistance of the cut chrysanthemum is improved through the conversion of the endogenous CgHSP70 genes and normal transcription expression as well as the induction of the expression of the genes at an adverse environment; a novel and practical method is provided for selecting and breeding stress resistance varieties of chrysanthemum by using a gene engineering technology; and the breeding progress of the biotechnology of the chrysanthemum can be effectively accelerated.
Owner:NANJING AGRICULTURAL UNIVERSITY

Combination type heat storage water tank of external disk heat storage casting box and condensation heat exchanger

InactiveCN102635948ALarge water storage capacityNo longer takes up volumeFluid heatersWater storageWater quality
The invention discloses a combination type heat storage water tank of an external disk heat storage casting box and a condensation heat exchanger. The combination type heat storage water tank comprises a shell, the heat storage casting box, a heat storage material, a water tank liner, the condensation heat exchanger and an insulating material; the heat storage material is filled in the heat storage casting box; the insulating material foams between the shell and the water tank liner; the water tank liner is provided with a water inlet and a water outlet; the outer wall of the water tank liner is externally wrapped by the heat storage casting box; and the outer wall of the water tank liner is externally wrapped by the condensation heat exchanger. According to the invention, the heat storage casting box and the condensation heat exchanger are not directly immersed in water, so as to ensure safety of water quality; and at the same time, the heat storage casting box and the condensation heat exchanger are not corroded, so as to prolong the service lives; and the heat storage casting box and the condensation heat exchanger do not occupy volume of the water tank liner, so as to increase the water storage capacity of the water tank.
Owner:SOUTH CHINA UNIV OF TECH

Thermal barrier coating, as well as preparation method and application thereof, and aero-engine turbine blade

The invention relates to a thermal barrier coating, as well as a preparation method and application thereof, and an aero-engine turbine blade, and belongs to the field of aero-engine hot end part protection coatings. The thermal barrier coating comprises a 7YSZ ceramic layer and an aluminum oxide layer arranged on the surface of one side of the 7YSZ ceramic layer, wherein the 7YSZ ceramic layer isin a feather column shape; and aluminum oxide in the aluminum oxide layer is nanocrystals. The thermal barrier coating not only has high thermal insulation and high stress tolerance, but also has favorable fused salt corrosion resistance and resistance to high temperature oxidation and particle erosion. The preparation method comprises the steps of adopting a plasma spraying-physical vapor deposition method for preparing the 7YSZ ceramic layer; adopting a magnetron sputtering technology for preparing the aluminum oxide layer; and then carrying out vacuum treatment. The method is simple, and the uniform thermal barrier coating can be prepared. The thermal barrier coating is applied to be arranged on an aero-engine hot end part such as the surface of a turbine blade, so that the turbine blade has favorable resistance to high temperature oxidation, CMAS corrosion and particle erosion.
Owner:GUANGDONG INST OF NEW MATERIALS

Welding method for relieving residual stress of ceramic and metal brazed joint

The invention provides a welding method for relieving residual stress of a ceramic and metal brazed joint. The method comprises the following steps: S1, respectively carrying out surface treatment ona ceramic material and a titanium-based material to obtain a to-be-connected ceramic material and a to-be-modified titanium-based material; S2, preparing a mixture for generating a surface modification layer; S3, coating the modified surface of the to-be-modified titanium-based material with the mixture, and performing connection treatment to obtain a modified titanium-based material with a surface modification layer; and S4, sequentially connecting the modified titanium-based material, a brazing filler metal and the to-be-connected ceramic material, and performing brazing. The brazing fillermetal is connected with the to-be-connected surface of the to-be-connected ceramic material and the surface modification layer. According to the method, the surface modification layer with the small thermal expansion coefficient is prepared on the surface of the titanium-based material in advance, then brazing connection is conducted, on the premise that the elasticity modulus of the brazing filler metal layer is not increased, the thermal expansion coefficient of the surface modification layer can be reduced, and the residual stress of a brazed joint is effectively reduced.
Owner:HARBIN INST OF TECH

Hydrogen raw material production equipment and process for ammonia synthesis

The invention discloses hydrogen raw material production equipment and process for ammonia synthesis. The hydrogen raw material production equipment comprises a control device, a methanol water storage conveyer and at least three groups of methanol water-reforming hydrogen production modules, wherein the control device is electrically connected with the methanol water storage conveyer and each group of methanol water-reforming hydrogen production modules, so as to control the working states of the methanol water storage conveyer and the methanol water-reforming hydrogen production modules; hydrogen prepared by various methanol water-reforming hydrogen production modules is directly conveyed to an ammonia synthesis system through conveying pipelines; and the control device is used for controlling a proper number of methanol water-reforming hydrogen production modules to run according to the hydrogen raw material quantity demand information of the ammonia synthesis system. The hydrogen raw material production equipment is high in modularization; a single module is small in size and fast to start; the hydrogen can be immediately prepared without a hydrogen storage tank, and can be rapidly separated; and the hydrogen raw material production equipment is good in stability, high in intellectualization, sensitive in parameters control of hydrogen preparation temperature, gas flow and air pressure, high in safety and high in reliability.
Owner:GUANGDONG HYDROGEN ENERGY SCI & TECH

LED device, LED lamp and method for processing conductive bonding wire of LED device

The invention discloses an LED device. The LED device comprises an LED chip, a support for bearing the LED chip, a conductive bonding wire for connecting an LED chip electrode and the support as well as a packaging glue body for covering the LED chip and the conductive bonding wire, wherein the support comprises an insulation area as well as a first electric connection area and a second electric connection area which are located on two sides of the insulation area respectively, the LED chip is mounted in the first electric connection area, one end of the conductive bonding wire is located at the LED chip electrode, the other end of the conductive bonding wire is located in the second electric connection area, and the conductive bonding wire comprises a vertical section, a first bending section, a second bending section and a connecting section. The invention further discloses an LED lamp and a method for processing the conductive bonding wire of the LED device. The stress bearing capacity of the conductive bonding wire is improved by a three-dimensional structure formed by the vertical section, the first bending section, the second bending section and the connecting section of the conductive bonding wire, so that the overall service life of the device is prolonged.
Owner:FOSHAN NATIONSTAR OPTOELECTRONICS CO LTD

Application of protein AtbHLH122 of arabidopsis thaliana and coding gene of protein AtbHLH122 for regulating and controlling stress tolerance of plants

The invention discloses application of protein AtbHLH122 of Arabidopsis thaliana and a coding gene of the protein AtbHLH122 for regulating and controlling the stress tolerance of plants. The amino acid sequence of the protein is shown in a sequence 1 of a sequence table and can be used for regulating and controlling the stress tolerance of the plants, or substances and methods, capable of adjusting the expression level of the protein shown in the sequence 1 of the sequence table, can be used for regulating and controlling the stress tolerance of the plants. Shown by experiments, after the coding gene of the protein AtbHLH122, which is shown in a sequence 2 of the sequence table, is over-expressed in Arabidopsis thaliana, a transgenic Arabidopsis thaliana plant is obtained, the survival rate after drought treatment, the germination rate and leafy rate after 140mM NaCl treatment and the root length after 250mM mannitol treatment of the transgenic Arabidopsis thaliana plant are remarkably lower than those of the wild plants, and furthermore, after the treatments, gene AtbHLH122 knockout mutants are less than those of the wild plants; and thus, the protein AtbHLH122 shown in the sequence 1 of the sequence table has the function of regulating and controlling the stress tolerance of the plants and has an important significance on the aspects of stress tolerance research and breeding of the plants.
Owner:INST OF CROP SCI CHINESE ACAD OF AGRI SCI
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