39 results about "Freezing tolerance" patented technology

An electric power generation system has elements that improve the cold start capability and freeze tolerance of a constituent fuel cell stack cooperate to reduce the amount of water remaining within the passages of the stack. The system includes a purge system that is connectable to the oxidant supply, fuel supply and/or coolant passages upstream of the stack. When the stack is shut down, the stack is disconnected from an external circuit, and purge fluid is transmitted by the purge system through the stack before the stack falls below the freezing point of water. In systems where fuel and/or oxidant streams are humidified prior to entry into the stack, a humidifier bypass system may be provided in place of the purge system. The humidifier bypass system transmits reactant fluid to the stack in fluid isolation from the humidifier, so that the inlet reactant streams are unhumidified.

The invention discloses a method for safely and efficiently cultivating dendrobium officinale through winters. The method includes 1), creating cultivation environments, to be more specific, selecting glass greenhouses or plastic film greenhouses, erecting frames to cultivate the dendrobium officinale or cultivating the dendrobium officinale in fields; 2), laying cultivation media and cultivating the dendrobium officinale by the aid of the mixed media comprising pine barks and rubbles; 3), cultivating and planting the dendrobium officinale, and to be more specific, planting the dendrobium officinale in a group-planting mode; 4), applying fertilizers and water to the dendrobium officinale, to be more specific, applying the low-nitrogen compound liquid fertilizers with the concentration of 1.0-3.0g/L once every half a month during fertilization, starting to primarily water the dendrobium officinale on the third day after the dendrobium officinale is planted, performing freeze-tolerance hardening on the dendrobium officinale before the winters, properly reducing the humidity before the winters, and spraying water on the dendrobium officinale once in every period from a week to half a month. The lengths of the glass greenhouses or the plastic film greenhouses are shorter than or equal to 40m, and the distances among the greenhouses are farther than or equal to 2m. Each group of dendrobium officinale includes 3-5 dendrobium officinale plants, the row spacing is 20cm, the group spacing is 10cm, and the density of the dendrobium officinale is 100000 plants per 667m<2>. Owing to the mode, the method has the advantages that the problem of freezing injury can be solved from the aspects of cultivation facilities and cultivation technologies, accordingly, the yield of the winter dendrobium officinale can be increased, and the quality of the winter dendrobium officinale can be improved.

The invention relates to a processing process of an enameled flat wire, in particular a processing process of an enameled aluminum flat wire. The processing process takes the aluminum rim wire as the raw material and comprises the following steps: firstly, the aluminum rim wire is pressed into a flat wire blank with a rectangular cross section through a pressing roll; secondly, the flat wire blank prepared in the first step is molded by cold drawing by adopting a cold-drawing wire-drawing device and rewound; thirdly, the flat wire in the second step is unwound at a uniform speed and is softened through a softening furnace under the oxygen-free environment or the low oxygen environment; fourthly, the continuously softened flat wire with the temperature of 480 to 520 DEG C is immerged into water with temperature of 20-30 DEG C to be cooled under the oxygen-free environment or the low oxygen environment and is taken out of the water and then blown and dried; fifthly, the 1731 polyester paint is evenly coated on the dried flat wire and then dried; and sixthly, the 1754 or 1765 polyester paint is evenly coated on the flat wire coated with the base paint, then dried and rewound to obtain the aluminum flat wire. The finished enameled aluminum flat wire manufactured through the process has good adhesion, less heat, higher thermal shock resistance and good freeze-tolerance and solvent resistance.

The invention discloses a frozen semen diluent of equus animals and a preparation method thereof. The diluent at least comprises a basic solution prepared from the following raw materials: D-lactose monohydrate, prostaglandin, EDTA (Ethylene Diamine Tetraacetic Acid), a bee pollen aqueous solution, hyaluronic acid and squalane. The diluent also comprises egg yolk liquid, glycerin, penicillin and streptomycin. The preparation method comprises the following steps: (1) preparing the bee pollen aqueous solution; (2) preparing the basic solution; (3) adding the egg yolk liquid, the glycerin, the penicillin and/or the streptomycin. By adopting the technical scheme, the preparation method disclosed by the invention has the benefits that the bee pollen aqueous solution, the hyaluronic acid, the squalane and the like are creatively combined for preparation of the frozen semen diluent of the equus animals to ensure that the forming of large ice crystals in semen freezing process is prevented to the maximum limit, so that the damage of ice crystallization to semen is avoided, the survival rate and the acrosome intact rate of frozen semen are remarkably increased, the quality of the frozen semen is further improved and the freezing tolerance of spermatid is increased.

The invention discloses a transparency-adjustable glass door and a manufacturing method thereof. The transparency-adjustable glass door and the manufacturing method thereof have the advantages that a structure and a manufacturing technology of an electrochromic device are improved, so that the electrochromic device can be self-powered; according to an electrochromism principle, the transparency-adjustable glass door has the advantages of adjustability in transparency, short color change response time, quite high photoelectricity energy conversion efficiency, longer service life and good freezing tolerance; the manufacturing method is easy to operate and easy for industrial production.

The invention provides a culture medium for improving the freezing tolerance of Lactobacillus bulgaricus and application of the culture medium. The culture medium contains the following components byweight: 12g-30g of mannose, 5g-10g of mycose, 3g-6g of casein peptone, 3g-6g of anhydrous sodium acetate, 5g-10g of beef extract powder, 3g-6g of potassium acetate, 1.5g-4.0g of anhydrous calcium chloride, 0.1g-0.8g of magnesium sulfate, 0.1g-0.5g of manganese sulfate, 0.1g-1g of L-cysteine hydrochloride, 0.6mL-1.2mL of Tween-80 and 1000mL of distilled water. By utilizing the freezing-resistant culture medium and particularly a freeze-drying protection method provided by the invention, relatively high freeze-drying survival rate of Lactobacillus bulgaricus can be realized, the preservation period is relatively long, and the survival rate is unlikely to be decreased.

The invention discloses a potato seedling stage freezing tolerance determination method. The potato seedling stage freezing tolerance determination method comprises the following steps of, firstly, washing samples with iced distilled water and numbering the samples in test tubes; secondly, placing a contrast test tube into ice and the others test tubes into water bath; thirdly, slowly cooling downthe test tubes in water bath for freezing; fourthly, slicing unfrozen leaves, containing leaf slices into test tubes and filling in distilled water; fifthly, pumping air out of the test tubes througha vacuum pump, oscillating the test tubes on an oscillator, and standing the test tubes for measurement of a conductivity R1; sixthly, sterilizing the test tubes into a boiler, and cooling the test tubes down for measurement of a conductivity R2; seventhly, plugging the average value of 3 electrolyte permeation rates corresponding to every temperature into an equation for nonlinear fitting, taking the inflection point of the equation as a median lethal temperature point of a material to obtain the freezing tolerance of the material. The potato seedling stage freezing tolerance determination method can help rapidly determine the freezing tolerance of potatoes of different gene types without time and season restrictions, and meanwhile is accurate and reliable in data to provide important data for potato freezing tolerance research and achieve good technical effects.

The invention discloses a production method of a waterproof and freezing-tolerant white emulsion. The production method comprises the following steps: mixing dibutyl phthalate with octyl alcohol, and stirring till the dibutyl phthalate and the octyl alcohol are dissolved for later use; adding water into a reaction kettle with a jacket, heating to 60 to 80 DEG C, adding polyvinyl alcohol during stirring, heating to 90 DEG C, and preserving the heat till the polyvinyl alcohol is completely dissolved; injecting cold water into the jacket of the reaction kettle to cool the liquid in the kettle to 66 to 69 DEG C, and adding vinyl acetate during stirring; adding the octyl alcohol solution of the dibutyl phthalate into the reaction kettle, then adding ammonium persulfate, performing uniform stirring, mixing the components at 66 to 69 DEG C for 1 to 2 hours, so as to obtain white viscous vinyl acetate white emulsion, and packaging the white emulsion with a glass bottle or a plastic bottle. According to the production method of the waterproof and freezing-tolerant white emulsion, the production process of common white emulsion is improved; by adding of a modifier, the modified white emulsion which is not gelatinized at low temperature is obtained; when compared with the common white emulsion, the modified white emulsion has the advantage that the water resistance, the heat resistance and the freezing tolerance are all obviously improved.

The present invention relates to three novel sequences of SEQ ID Nos. 1-3, differentially expressed in apical buds of plant Caragana jubata (Pall.) under freezing conditions and a method of identifying differential expression in said plant species, and also, a method of introducing said sequences into a biological system to develop freeze tolerance in them.

The invention discloses a freezing-tolerant crack-resistant coating for exhaust equipment. The coating is made from the following raw materials: coal ash, an organosilicon-modified acrylic resin, toluene diisocyanate, zinc oxide, butyl cellulose, butyl acetate, an antifoaming agent BYK535, polyurethane, aluminium powder, silicon carbide powder, styrene, azodiisobutyronitrile, waterborne polyurethane, glycol, sodium dodecyl sulfate, a silane coupling agent a171, nanometer silica, a zirconia sol and a proper amount of absolute ethanol. The coating has preferable fouling resistance, alkali resistance, aging resistance and washing resistance, and has excellent freezing tolerance and crack resistance, and therefore can be used in the low-temperature environment. The equipment is protected, the service life of the equipment is prolonged, and thus the coating has high practical value.

The invention discloses a kidney-tonifying and yang-invigorating traditional Chinese medicinal composition, and a preparation method and a use thereof. The traditional Chinese medicinal composition comprises 40-50 wt% of Cistanche deserticola, 5-10 wt% of sea horses, 20-30 wt% of fructus cnidii and 20-30 wt% of Chinese chive seeds. The traditional Chinese medicinal composition is respectively intragastrically administrated to mice at a low dosage of 0.02 ml/g and a high dosage of 0.04 ml/g. A lot of experiments prove that the composition can effectively enhance the fatigue resistance, significantly prolong the survival time of the mice in a closed container and enhance the hypoxia tolerance of the mice; and after the composition is administrated by yang deficiency mice, the composition canobviously shorten the penis erection latency of the yang deficiency mice while prolonging the freeze tolerance period of the mice. The composition can effectively improve the internal organs coefficients of a sperm sac-prostate, a testis and a preputial gland of the yang deficiency mice and increase the amount of sperms. The composition provides a new medicine choice for improving yang deficiencysymptoms.

The invention is to provide a food modifying agent for oil-fried foods which can cut oil absorption of an oil-fried food by half without deteriorating the taste thereof, impart freeze tolerance thereto to enable the storage of the fried product in a frozen state and prevent deterioration in taste, flavor, etc. thereof caused by microwave cooking. A food modifying agent comprising an ionized mineral component that is capable of forming, together with a dietary fiber component, a water retention structure whereby oil absorption can be cut by half in the course of oil-cooking. By soaking a food material to be fried (for example, meat, fish meat, seafood or vegetable) in a dilute aqueous solution or by spraying the dilute aqueous solution to the surface of the food material to be fried, a water retention structure, whereby oil absorption can be cut by half, is formed on the surface of the food material. In the case of frying potatoes in oil, the oil absorption in the course of oil cooking can be reduced and thus low-calorie and yet still delicious fried potatoes can be provided. After storing in a frozen state, water release can be controlled due to the water retention function in the course of microwave cooking and thus fried potatoes having a delicious fresh-fried taste can be reconstituted by microwave cooking. Thus, an excellent microwavable frozen food capable of reproducing a crisp and fresh-fried texture can be provided.

The invention relates to the technical field of a building material, in particular to really stone paint added with colored glass beads and used for exterior wall decoration. The really stone paint comprises the following raw materials: fine sand, coarse sand, glass beads, water, a dispersing agent, a wetting agent, hydroxylmethyl cellulose, emulsified silicon oil, organic silicon modified styrene-acrylic emulsion, polystyrene styrene ester, a defoaming agent and a film-forming aid, wherein the glass beads are colored hollow wear-resistant beads and comprise the following raw materials: silicon dioxide, zinc oxide, calcium oxide, sodium oxide, potassium oxide, aluminum oxide and color auxiliary materials; the color auxiliary materials comprise titanium dioxide, red lead, fluorite powder, cadmium red, sulfur, chromium oxide green, cerium oxide and yttrium aluminium garnet. The fine sand and the coarse sand are natural colored sand which is subjected to polishing treatment. The really stone paint has protective properties, such as fire resistance, water resistance and freezing tolerance, of the common really stone paint, has colorful coating appearance, and can exert glaring and glorious decorative effects under the night light.

The invention discloses polypropylene fiber autoclaved aerated concrete and a preparation method thereof. The method comprises the following steps: a) performing first mixing on oleic acid, triethanolamine and water to prepare soluble oil; b) performing second mixing on an aluminum source, a foaming agent and water to prepare an aluminum powder suspension; c) performing third mixing on alkali and water to prepare an alkaline solution; and d) performing fourth mixing on cement, slag, sand, polypropylene fiber, phenolic resin, red brick particles, ferriferrous oxide and water in the presence of a magnetic field with the magnetic field intensity of 0.002-0.003T, then adding the soluble oil, the alkaline solution and the aluminum powder suspension, performing fifth mixing, casting, and then aerating to prepare the polypropylene fiber autoclaved aerated concrete, wherein the aluminum source is aluminum powder or aluminum paste, the foaming agent is one or more of nekal, peregal, saponin powder, paraffin wax soap and washing powder, and alkali is sodium carbonate and/or borax. A building material prepared by using the polypropylene fiber autoclaved aerated concrete has excellent mechanical strength, density and freezing tolerance.

The invention discloses seafood-flavor curry sauce. The seafood-flavor curry sauce is prepared from the following raw materials: edible vegetable oil, curry powder, mashed onions, mashed garlic, salt,sugar, fish hydrolysate, rhizoma curcumae longae powder, fennel, lemon-grass powder, modified starch, pepper powder, dried orange peel powder, galangal powder, nutmeg powder, and cumin powder. By adding the fish hydrolysate, the product, namely the curry sauce, is endowed with unique seafood flavor; and thus, curry sauce with novel flavor is provided. Moreover, the curry sauce takes the edible vegetable oil as a medium, and is free of additional water addition; so that, overall aroma and flavor of the curry sauce can be improved with long-lasting aroma maintained, and aroma, color and lusterof the curry sauce can be preserved after long-time cooking. The seafood-flavor curry sauce is semi-solid paste with freezing tolerance; moreover, the seafood-flavor curry sauce is easy to dilute, uniform in dilution effect, not liable to cake, and not liable to coke during cooking process.

The invention discloses an outdoor billboard based on an electrochromic device and a manufacturing method thereof. The structure and a manufacturing process of the electrochromic device are improved, so that the electrochromic device has self-energizing characteristic, the obtained novel electrochromic device is short in discolouration response time, extremely high in photoelectric energy conversion efficiency, prolonged in life and good in freezing tolerance, the manufacturing method disclosed by the invention is simple and easy to operate, and industrial production can be easily realized.

The invention discloses a car rearview mirror with color-changing performance and a manufacturing method thereof, which improves the structure and manufacturing process of an electrochromic device so that it has the characteristic of self-supply, and its color-changing response time is short , the service life is prolonged, the freezing resistance is good, and the self-color can be changed according to the light intensity, so that the user can have a clear observation field, and the method of the invention is simple and easy to operate, and easy to industrialized production.

The invention discloses a method for selecting blueberry foreign matters. Screening of blueberries, particularly frozen blueberries is realized by using a white granulated sugar solution with a certain concentration and temperature, and impurities such as leaves, stems, hair and sand gravel are efficiently removed. The defects of a blueberry selecting machine are overcome, and high-efficiency andlow-loss selection of the blueberries is realized by utilizing the temperature, density and viscosity of the white granulated sugar solution; due to use of pectin pectylhydrolase, damage to the skin of the blueberries by high temperature and sugar liquid is effectively avoided, the integrity of the screen blueberries is improved, the guarantee period is prolonged and the freezing tolerance of theblueberries is improved; and due use of CaCl2, the skin breaking rate is further reduced, the protection period is prolonged and the freezing tolerance is improved. The method is simple, rapid and high in selecting efficiency; non-loss selection of the blueberries can be realized; the sugar liquid is reusable; and the process cost is low.

The invention belongs to the technical field of bioengineering, and relates to breeding of industrial microorganisms, in particular to a high-freezing-tolerance accharomyces cerevisiae strain and a construction method thereof. The freezing-tolerance yeast strain is obtained in the mode that in a parent yeast strain, a strong promoter PGK1 is selected for overexpressing a complete sequence of an encoding gene SNF1 of Snf1 protein kinase alpha subunit. Compared with the parent strain, according to the freezing-tolerance accharomyces cerevisiae strain, in a freezing environment, the cell survivalrate and the fermentation capacity of frozen dough are significantly improved, technical obstacles and quality defects in the bread making process are overcome, and the high-freezing-tolerance accharomyces cerevisiae strain has a wide application prospect.