249 results about "Cold tolerance" patented technology

The invention provides a neoprene composite which can improve the cold tolerance performance of a brake of railway locomotive and rolling stock, using neoprene with slow crystalline growth velocity as the main material matched with other added rubbers and accessory ingredients that can disturb the crystallization of neoprene, reduce the brittleness temperature and improve the cold tolerance performance thereof. Calculated by weight, the components comprise 100 to 50 portions of neoprene, 4 to 15 portions of vulcanizator, 0.5 to 4 portions of processing material, 10 to 90 portions of reinforcing filler, 15 to 50 portions of compound plasticizer, 0.5 to 6 portions of curing catalyst and 3 to 9 portions of aging inhibitor. The neoprene composite with improved cold tolerance performance overcomes the disadvantages of low temperature crystallization and poor cold tolerance of the common neoprene, is suitable for operation environment of railway locomotive and rolling stock in our country, and can meet use requirements within the temperature scope of minus 50 DEG C to 70 DEG C.

The present invention provides nucleic acid constructs, including plasmids, expression vectors or expression cassettes comprising polynucleotides encoding CCAAT-binding transcription factor polypeptides that have the ability to increase a plant's tolerance to abiotic stress. Polynucleotides encoding functional CCAAT-binding transcription factors were incorporated into expression vectors, introduced into plants, and ectopically expressed. The encoded polypeptides of the invention significantly increased the cold and water deficit tolerance of the transgenic plants, as compared to tolerance to these stresses of control plants.

Polynucleotides and polypeptides incorporated into expression vectors have been introduced into plants and were ectopically expressed. The polypeptides of the invention have been shown to confer at least one regulatory activity and confer increased yield, greater height, greater early season growth, greater canopy coverage, greater stem diameter, greater late season vigor, increased secondary rooting, more rapid germination, greater cold tolerance, greater tolerance to water deprivation, reduced stomatal conductance, altered C / N sensing, increased low nitrogen tolerance, increased low phosphorus tolerance, or increased tolerance to hyperosmotic stress as compared to the control plant as compared to a control plant.

The invention relates to a potting wax composition for metalized film capacitors, which comprises petroleum wax, synthetic wax, malthene and a tackiffer. The invention provides a potting wax composition for metalized film capacitors with suitable properties, and the defect of prior art that no special product exists in the field is made up. The invention is suitable for the potting of low voltage self-recover metalized polypropylene film power capacitors, CBB series capacitors and other metalized film capacitors. The invention has the advantages of good electrical properties, good moistureproof property, good fluidity, good heat resistant, good cold tolerance, suitable physical and chemical properties and processing property, innocuity, no corrosion, no impurity, and other advantages.

A hot melt adhesive based on a functionalized metallocene polyethylene copolymer finds use in packaging applications where high heat resistance, as well as good cold tolerance, is required.

A container for consumables such as cosmetics, hair and skin care products, foods, small appliances, optical disks and other consumables may be made of a biodegradable material having incorporated therein seeds of plants suitable for germination. The seeds may be selected for hardiness, attractiveness of the seed, plant or name, climate, likelihood of germination and other attributes. The seeds may be incorporated in a secondary space in the container, or embedded in the material of the container either wholly or partially, or in one or more layers of a multi-layer container. The container material may be natural or artificial plastic, cardboard, paper, fabric, or any other biodegradable material. The container may incorporate fertilizer, germination agents, agents to speed breakdown of the container. Different varieties of seeds may be used in the container, and for pleasing aesthetic effect, the seeds may be visible thru partially or wholly transparent material.

The invention relates to a production method of a small-aperture ultrathin-walled high-frequency welded aluminum alloy pipe for a heat pump. The production method is characterized in that an aluminum alloy strip is selected as a raw material and is sequentially treated through the following several steps of: bilateral uncoiling, molding, high-frequency welding, shaping, shearing and packing, wherein the welding current is 230-235A. The small-aperture ultrathin-walled high-frequency welded aluminum alloy pipe prepared by the production method has excellent pressure resistance, corrosion resistance, cold tolerance and heat resistance, aims at the heat-pump water heater industry which is quickly being developed in China for the first time, can be applied to a heat pump condenser (evaporator) and can replace a copper pipe to meet the high performance requirements of a heat-pump water heater.

The present invention provides compositions and methods for regulating expression of nucleotide sequences in a plant. Compositions comprise novel nucleic acid sequences encoding a transcription factor involved in modulating gene expression in response to abiotic stress such as cold or drought. Methods for expressing the nucleic acid sequence in a plant and improving cold and / or drought tolerance of plants are also provided.

The invention provides an adhesive, particularly relates to a chloroprene rubber adhesive and belongs to the technical field of adhesives. The solvent type chloroprene rubber adhesive comprises the following constituents in parts by weight: 30-50 parts of chloroprene rubber, 10-15 parts of natural rubber, 10-15 parts of vinyl acetate, 10-20 parts of methyl methacrylate, 5-10 parts of hydroxyethyl methylacrylate, 4-8 parts of epoxy resin, 10-20 parts of terpene resin, 5-10 parts of coumarone resin, 2-4 parts of hydroquinone, 5-10 parts of magnesium oxide, 30-10 parts of solvent and 3-5 parts of anti-aging agent. The solvent type chloroprene rubber adhesive provided by the invention has better heat resistance and cold tolerance, the adhesive strength of the chloroprene rubber adhesive provided by the invention can be more than 130N / cm, after being placed for 7 days at minus 30 DEG C, the adhesive strength also can be 110N / cm, and after being placed for 7 days at 100 DEG C, the adhesive strength is more than 75N / cm.

The invention relates to a cloning and function expression method of an adversity stress AhMYBL6 gene in peanut. The adversity stress AhMYBL6 gene is synthesized by RT-PCR (reverse transcription-polymerase chain reaction) cloning by the steps of preparation and treatment of materials, extraction of RNA (ribonucleic acid) and synthesis of cDNA (complementary deoxyribonucleic acid). The open reading frame of the gene is 861bp, and 287 amino acids are coded totally. The homology of the amino acid sequence of the gene with the MYb family proteins GmMYB4, GmMYB29 and GmMYB29A2 of the soybean is higher than 60%. The fluorescent quantitative PCR verifies the expression patterns of the AhMYBL6 under low temperature, salt stress and drought stress; the result indicates that the expression levels of the AhMYBL6 are obviously enhanced after various stress treatment for 1 hour, and kept at high levels all the time thereafter; and the expression level of the AhMYBL6 in the leaf subjected to low-temperature treatment is maximally enhanced by 20 times. After the gene is transferred into peanut by transgenic means, compared with the control, the transgenic plant has obvious characteristics of cold tolerance, salt tolerance and drought tolerance. The AhMYBL6 gene can obviously enhance the stress tolerance of the peanut.

The invention discloses a method for firing black tiles in vacuum internal combustion mode with shale as raw material, comprising the steps of batching, piling up and ageing, vacuum making blanks, airing and dehydrating, placing in kiln and firing, sealing kiln and smoldering, absorbing water smoke and delivering finished products, and its outstanding substantial character and remarkable advancement lie in that it uses the shale obtained by blasting for cutting a mountain to replace clay, and the black tile products have high intensity, good cold tolerance and frost resistnace, weather proofing, and osmosis proofing, and extremely large added value, and have completely remarkable economic and social benefits.

The invention discloses a high-quality tomato planting method. The planting method includes the following steps of seed processing, seed sowing, seedling growing stage management after sowing, adult seedling field planting, field management after field planting and fruit harvesting. Different stages in the tomato planting period are reasonably matched and processed, cultured tomato plants grow strongly, are high in nutrition absorbing capacity and cold endurance and can still grow well in the environment at the temperature of 10 DEG C or below, the acre yield of produced tomatoes can be increased by 20-30%, the content of vitamin C in the tomatoes can be increased by 25-35%, the content of carotene can be increased by 30-40%, and the content of iron element can be increased by 40-50%. The tomatoes are good in appearance and mouthfeel and have market competitiveness.

This invention open a cold tolerance of Serratia sand Habitat-chuen (Serratia fonticola) xjF1 CGMCC No.1971, through the strain characteristics, enzyme production conditions and the nature of enzyme research, proved a new phospholipase A1 gene consists of two open plA and plS reading frame, was certified plA gene coding phospholipase A1, plS gene coding phospholipase A1 auxiliary protein. This invention relates to the gene containing the recombinant plasmid and reorganization cell, the gene expression products phospholipase A1 in the show activity under low-temperature conditions, can be used in industries such as oil refining process can be simplified production process, lowering energy consumption, improve product quality , protecting the environment, reduce production costs, have important practical significance.

The present invention is the cultivation technique of cold resistant Hokkaido box or Jiaodong spindle tree, and is the grafting technique with silk cotton tree as stock and Hokkaido box or Jiaodong spindle tree as scion. Through grafting of silk cotton tree with early germination, late leaf falling and high cold resistance and Hokkaido box or Jiaodong spindle tree in the same genera to form one new kind of landscape tree with improved cold tolerance and fast growth speed.

Polynucleotides and polypeptides incorporated into expression vectors have been introduced into plants and were ectopically expressed. The polypeptides of the invention have been shown to confer at least one regulatory activity and confer increased yield, greater height, increased secondary rooting, more rapid germination, greater cold tolerance, greater tolerance to water deprivation, reduced stomatal conductance, altered C / N sensing, increased low N tolerance, increased low phosphorus tolerance, or increased tolerance to hyperosmotic stress as compared to the control plant as compared to a control plant.

The invention discloses a polyvinyl chloride / polyurethane elastomer medical material and a preparation method thereof. The polyvinyl chloride / polyurethane elastomer medical material comprises the following components by weight: 50-90 parts of polyvinyl chloride resin, 10-50 parts of polyurethane, 20-60 parts of a plasticizer, 5-10 parts of a cold resistant plasticizer, 1-10 parts of a heat stabilizer, 0.1-2 parts of an antioxidant and 0.1 -1 parts of a lubricant. The polyvinyl chloride / polyurethane elastomer material provided by the invention has superior cold tolerance, and can be used for a long time at 50 -60 DEG C according to GB / T5470-2008 standard test, and can be used in the manufacture of packaging material for blood bags or other blood products, and other the medical materials.

The invention discloses a planting method for a protection forest in a northwestern desert area. The method is characterized in that a wind and sand frontier area without vegetation at the periphery of an oasis is selected, a plant tree line band, a shrub line band and a herb line band are constructed from outside to inside in sequence in a main wind direction, and the protection forest suitable for the northwest desert area is cultivated through planting of plants and water and fertilizer management after planting. Compared with the prior art, the planting method has the advantages of high temperature resistance, cold tolerance, salt and alkali resistance, sand burial resistance, drought tolerance, a low occurrence rate of pests and diseases and wide adaptation; the selected plants are all drought-resistant, water-saving and sand-preventing plants, a configuration pattern of combination of trees, shrubs and herbs is adopted, the community stability is high, the efficiency of wind prevention and sand fixation is guaranteed, direct economic benefits can be generated at the same time, the generated economic benefits can continue to maintain the management and protection investment ofthe protection forest and even have surpluses, the effects of wind prevention and sand fixation are achieved, the environmental quality is improved, and meanwhile, the enthusiasm of local people formanagement and protection of the protection forest is greatly improved.

The invention discloses a water-saving high-yield cultivation technology for precisely attaching seeds to a rice membrane. The technology includes the following steps that first, a field is levelled and fine raked; second, a high-yield late-maturing lodging-resistant variety is selected; third, the seeds are precisely attached to the membrane through a machine; fourth, the membrane is made to cover the field for cultivation; fifth, formulated fertilization is performed; sixth, water management is performed. The technology has the following yield increasing advantages that first, the seeds are precisely attached under the rice membrane, and seedling growing, transplanting and restoring are not needed; second, the seeds are covered with the mulch, the moisture in the field is low, and pathogenic bacteria cannot be bred and spread easily; third, growth of weeds can be effectively restrained due to the membrane covering, and the technology is favorable for developing green rice production; fourth, the temperature under the membrane is high, and conversion and absorption of organic matter are promoted; fifth, the seeds are attached under the membrane, rice grows fast, and the root systems are strong; sixth, physiological water needs of rice are optimized, and water saving and yield increasing are achieved. Due to the technology, seedlings can be short, strong and good in cold tolerance and bear large ears and more grains, the cost saving and yield increasing effects are remarkable, rice cultivation is made the same as corn and soybean cultivation, labor is saved, and the production is more convenient and efficient to carry out.

The invention discloses a weather-resistant power pipe. The weather-resistant power pipe is prepared from the following raw materials in parts by weight: 100-150 parts of polypropylene, 5-10 parts of light calcium carbonate, 1-8 parts of flaky talcum powder, 2-10 parts of calcined kaolin, 1-5 parts of brucite powder, 20-40 parts of modified silica fume, 0.2-3 parts of colorant, 2-10 parts of novel nucleating agent, 1-2.7 parts of antioxidant, 0.5-3 parts of polytetrafluoroethylene, 2-12 parts of toughening master batch, 5-20 parts of melamine cyanurate and 5-15 parts of modified crystal whisker; the preparation process of the novel nucleating agent comprises adding 150-180 parts of p-tert-butyl benzoic acid to 200-300ml of tetraisopropyl titanate, reacting at 90-130 DEG C for 3-5 hours and then adding 100-150ml of silicate ester to obtain a solution A, adding the solution A to an ethanol-water mixture, hydrolyzing at 50-65 DEG C for 3-5 hours, filtering and drying, thereby obtaining the novel nucleating agent. The weather-resistant power pipe is high in shock resistance, aging resistance, cold tolerance and thermal resistance.

The invention relates to the technical field of paints, in particular to heat-resistant paint and a preparation method thereof. The heat-resistant paint is prepared from the following components in parts by mass: 8-12 parts of tung oil, 3-5 parts of quartz powder, 1-3 parts of aluminum phosphate, 4-9 parts of polyarylsulfone resin, 4-9 parts of polyimide resin, 5-7 parts of butanol, 3-7 parts of nonisocyanate polyurethane, 2-4 parts of china clay, 2-4 parts of talcum powder, 5-8 parts of cobalt iso-octoate, 0.2-1.2 parts of an anti-settling agent, 8-18 parts of a curing agent and 2-6 parts of an anti-cracking agent. The heat-resistant paint has the benefits that 1 the heat-resistant paint prepared by mixing the tung oil, the polyarylsulfone resin, the polyimide resin, the butanol, the nonisocyanate polyurethane, the talcum powder and the cobalt iso-octoate is good in heat-resistant effect, and has excellent physical and chemical properties such as the decorative property, the heat resistance, the salt fog resistance, the salt water resistance, the water resistance, the cold tolerance, the oil resistivity, the hydrocarbon solvent resistance, the adhesive force, the impact strength and the flexibility.

The invention discloses a fish protein polypeptide biological bacterial fertilizer, which is composed of the following raw materials in parts by weight: 15-17 parts of deep sea fish, 4-6 parts of bean cake powder, 7-9 parts of rice bran, 6-8 parts of molasses, 0.045-0.05 part of strain and 50-60 parts of water, wherein the strain comprises saccharomyces cerevisiae and rhodopseudomonas palustris of which bacteria amount ratio is (1-12):(0.8-1.0). The beneficial effects of the fish protein polypeptide biological bacterial fertilizer are as follows: (1) quick action: after the fertilizer is used for 2-3 days, new roots are obviously increased, fruits are remarkably enlarged with bright color and lustre and deep green leaves; (2) the fertilizer can be used for improving fruit setting rate, reducing deformity fruits, improving single fruit weight, and realizing completely filled fruits and excellent mouthfeel; (3) the fertilizer can effectively relieve root senescence, soil compaction and salinization of soil caused by long-term fertilization of a fertilizer, and strengthen the capability of continuous cropping resistance, disease resistance and cold tolerance of crops; and (4) the fertilizer is fertilized to improve the use ratio of the fertilizer.

The invention relates to a polyvinyl chloride (PVC) insulating plastics with wide temperature and high electrical performance. The compositions and the weight percentage of each composition are as follows: 55-75% of PVS resin, 20-35% of plasticizer, 1.5-5% of stabilizer, 0.1-0.6% of antioxygen, 0.1-0.6% of lubricant, and 1-6% of functional fillers. The PVC insulating plastics has excellent electrical insulating property, good cold tolerance under low temperature, and is especially applied in outdoor exploration operation in cold regions with inclement condition. The cables produced by the plastic have no cracking phenomenon after being conducted winding test at the temperature of minus 40 DEG C for 24 hours under low-temperature environment. The plastics are not only applied in low temperature environment, but also used in the production and application of wires and cables with high electrical property requirement. The insulating plastics have low cost and good processing property, andare suitable for scale production, thereby meeting the requirement on high property of PVC insulating plastics in the market.

A hazelnut planting method comprises steps as follows: hole digging, fertilizer placement in, singling, mulching, fertilizer application, field care, autumn harvest and storage, autumn fertilizing or spring fertilizing and freeze-up water irrigation before winter. According to the hazelnut planting method, hazelnut trees has broader adaptability to the land and is adaptable to multiple soil and terrains, and the adaptability of planting of hazelnuts to the environment is improved; the cold tolerance of the hazelnut trees is effectively improved, and the method is particularly applicable to the northern area in China; the pruning manner for the hazelnut trees is particularly described in detail, crowns can be shaped and only an appropriate quantity of main branches, lateral branches and bearing branches are maintained through continuous pruning for 4 to 5 years, and a larger number of fuller and higher-quality fruits are borne by the hazelnut trees; with the adoption of the hazelnut planting method, the labor cost is saved, the management cost is reduced, and the quality of finished products is also improved; meanwhile, the hazelnut planting method is applicable to planting and management of all hazelnut trees and has high applicability.

The invention discloses a cold-resistant agent for rice. The cold-resistant agent is formed by mixing and uniformly stirring the following raw materials in parts by weight: 20-25 of allantoin, 10-20 of proline, 10-20 of glycine, 10-20 of potassium dihydrogen phosphate, 10-15 of boric acid, 10-15 of zinc sulfate and 5-10 of manganese sulfate. After the raw materials are scientifically combined, the effect is composited; and field trials prove that after the rice is sprayed by 1000 times of solution of the product, the bound water and the chlorophyll of plants can be improved, the permeability of cell membranes is reduced, the cold tolerance of rice seedlings and plants is obviously improved, the damage of cold dew wind is effectively avoided, the ripening rate and the thousand seed weight are improved, the ageing of functional leaves and branches of rice can be delayed, and the lodging-resistance effect is obvious.

The invention provides a cold-tolerance gene qCT-3-2HHZ for rice booting stage stable expression and a molecular marking method thereof, and belongs to the field of rice high-yield stress-tolerance breeding and molecular genetics. According to the linkage and linkage disequilibrium phenomenon, the Huang zhanhua variety and eight associated breeding populations derived from donor parents rich in diversity are used, a whole-genome relational analysis and physical mapping method is adopted, the cold-tolerance gene qCT-3-2HHZ for the rice booting stage stability expression is precisely positioned and verified, and a practical economical marker ZCT-7 based on common PCR is further developed. The cold-tolerance gene qCT-3-2HHZ and the molecular marking method are applied to rice chilling-injury-tolerance assisted selection and pyramid breeding, defects of natural variation genes in the prior art can be effectively made up for, negative effects caused by assistant breeding conducted through primary positioning results can be remarkably reduced, genotype selection can be carried out on low-generation breeding populations in the seedling stage, cold-tolerance individuals are obtained, hybridization and transfer are facilitated in time, the process of identifying low-temperature resistance in the adult-plant stage is omitted, breeding efficiency is improved, and the breeding process is accelerated.

The invention provides a method for manufacturing edible oil which has good cold tolerance and good flavor. The manufacture method of the inventive edible oil is characterized by: mixing soft palm oil which is not deodorized after classification and vegetable oil except the palm like oil in the component fatty acid with a saturated fatty acid content of 1 wt%-25 wt% according to a ratio of 15:85-55:45 and obtaining a blending oil, and deodorizing at a temperature of 230-260 DEG C. According to the invention, no matter whether the soft palm oil is largely contained, the edible oil having good cold tolerance and no easy turbidity and crystallization even preservation under a low temperature, as well as good fresh flavor and high commodity value can be manufactured.

The invention discloses a method for breeding a multi-bolting cold-resistant flowering cabbage and belongs to the technical field of plant breeding. The method for breeding the multi-bolting cold-resistant flowering cabbage comprises the following steps: hybridizing purple flowering stalk with flowering cabbage to obtain a colony F1; selfing the obtained colony F1 to obtain a colony F2; selecting single plants consistent with breeding aims from the colony F2, and carrying out backcross on the selected single plants and the flowering cabbage; selecting single plants consistent with breeding aims in the backcross generation, and selfing the selected single plants; selecting single plants consistent with breeding aims in the selfing generation, and carrying out backcross on the selected single plants and the flowering cabbage to obtain the backcross generation; and then repeating selfing, so that the multi-bolting cold-resistant flowering cabbage is obtained. The method for breeding the multi-bolting cold-resistant flowering cabbage has the advantages that multi-bolting and cold-resistant characters of the purple flowering stalk are introduced into the flowering cabbage, the multi-bolting cold-resistant flowering cabbage variety is cultivated, and the multi-bolting cold-resistant flowering cabbage variety can grow in the Yangtze River region in autumn and winter due to the cold-resistant character; meanwhile, side flower stalk generative power is strong, side flower stalks are harvested mainly, one-time seeding and multiple harvesting are realized, a harvesting period is long, yield is high, and farming cost is reduced.

The invention discloses an organic fertilizer capable of improving stress resistance of plants. The organic fertilizer comprises the following raw materials in parts by weight: 40-50 parts of corns, 23-35 parts of soybean meal, 16-26 parts of urea, 10-15 parts of wheat bran, 6-8 parts of cake-shaped rape seed dregs, 4-5 parts of boron humate, 4-5 parts of EM microbial agent, 4-5 parts of ammonium sulfate, 3-6 parts of fulvic acid, 3-4 parts of medical stone, 3-4 parts of zinc humate, 3-4 parts of manganese humate, 2-3 parts of abscisic acid, 2-3 parts of ethephon and an appropriate amount of water. The organic fertilizer disclosed by the invention has various nutritional components and contains not only a lot of elements and trace elements required for the growth and development of various crops and but also contain microbial communities and a lot of organic substances having a special nutritional effect on crop roots; by applying the organic fertilizer, the resistance to pests and diseases and the lodging resistance of crops can be enhanced, the heat-retaining capacity and drought tolerance of crops are improved and safety and no pollution to human and environment are achieved; and by adding abscisic acid, the cold tolerance, frost resistance, drought tolerance and salt resistance of plants can be enhanced and the purpose that the yields of food crops and fruit trees is achieved.

The invention relates to a cable material and a preparation method and application thereof; the cable material is prepared from, by weight, 10-30 parts of ethylene propylene diene monomer rubber, 5-10 parts of ethylene-vinyl acetate copolymer, 2-5 parts of polyurethane, 2-10 parts of modified hydroxyapatite nano whiskers, 50-65 parts of inorganic flame-retardant filler, and 4.2-14 parts of an aid. The cable material has the advantages of high tear resistance, high wear resistance, high level of temperature resistance, good insulation, good flame retardancy, oil tolerance, and cold tolerance.

Polynucleotides and polypeptides incorporated into expression vectors have been introduced into plants and were ectopically expressed. The polypeptides of the invention have been shown to confer at least one regulatory activity and confer increased yield, greater height, greater early season growth, greater canopy coverage, greater stem diameter, greater late season vigor, increased secondary rooting, more rapid germination, greater cold tolerance, greater tolerance to water deprivation, reduced stomatal conductance, altered C / N sensing, increased low nitrogen tolerance, increased low phosphorus tolerance, or increased tolerance to hyperosmotic stress as compared to the control plant as compared to a control plant.