132results about How to "Reduce dissolved oxygen content" patented technology

The present invention discloses a watermelon juice probiotic fermented beverage and a preparation method thereof. The beverage preparation method uses watermelons as raw materials, scientifically blends prebiotic factors, does not add any essences and coloring matters, mainly uses low-temperature processing technology such as ultrasonic wave cleaning, high-pressure pulsed electric field treatment, biological enzymolysis, vacuum degassing, etc. in the whole process, replaces the existing heat sterilization and enzyme blunting technology, maintains the color and luster, flavor and mouth feel of the natural watermelon juice to a maximum degree, enhances the non-biological stability and biological stability of the watermelon juice, reduces the addition of chemical additives, increases the juice squeezing rate and food safety of the watermelon juice, and has a probiotic live bacteria content of 7 multiplied by 10^11 to 8 multiplied by 10^11 cfu/ml. The watermelon juice probiotic fermented beverage is environmentally friendly, can be processed into probiotic solid beverage and quantitatively packaged beverage which have natural taste, are nutritious and health-care, are convenient to drink, and have longer shelf lives, opens up a new way for watermelon deep processing and industrial development, and can achieve better economic and social benefits.

The invention discloses steel for a petroleum casing connecting piece and a manufacturing method thereof, and belongs to the technical field of metallurgy. The steel for the petroleum casing connecting piece comprises the following chemical ingredients in percentage by mass: 0.28 to 0.33 percent of C, 0.20 to 0.35 percent of Si, 0.45 to 0.60 percent of Mn, less than or equal to 0.025 percent of P, less than or equal to 0.025 percent of S, 0.90 to 1.10 percent of Cr, 0.18 to 0.25 percent of Mo, 0.020 to 0.050 percent of alt, less than or equal to 0.25 percent of Cu, less than or equal to 2.0*10<4> percent of H, 40*10<4> to 70*10<4> percent of N, less than or equal to 15*10<4> percent of T.O and the balance of Fe and inevitable impurities. The manufacturing method comprises the following production processes: an initial refining process of an electric furnace, a refining process of a ladle furnace (LF), a vacuum degassing (VD) process, a continuous casting process, a casting blank slow cooling process and an inspection and finishing process. The cleanliness, tissue compactness and uniformity of continuous casting round billets for the petroleum casing connecting piece are improved greatly, and the requirement of the steel for the petroleum casing connecting piece is met.

The invention discloses a probiotic foodstuff and a preparation method thereof. In the fermentation process of yoghourt, a functional starter, germinated brown rice, Chinese herbal medicine extract with anti-heat-and-cold irritability and a stabilizing agent capable of effectively enhancing stability are added; temperature-varying yoghurt fermentation enables propagation of lactic acid bacteria to be maximized and anti-heat-and-cold stress capability of lactic acid bacteria to be improved; non-thermal processing technology is employed for pretreatment of yoghurt and fruit and vegetable pulp so as to prevent infection with infectious microbes in preparation process, improve juice yield of the fruit and vegetable pulp, increase the content of soluble cellulose in the fruit and vegetable pulp and prevent browning of the fruit and vegetable pulp; and a scientifically compounded cryoprotectant with good anti-refrigeration effect is added during mixing of the fruit and vegetable pulp and the yoghurt. Eventually, the prepared probiotic foodstuff has fine mouthfeel, uniform texture, stable state, natural quality, a great number of live bacteria, strong functionality and long shelf life, wherein the content of the live bacteria is 1.75 * 10<11> to 2.55 * 10<11> CFU/g, and the shelf life is 30 to 36 months at normal temperature.

The invention discloses freeze-dried tablets and a preparation method thereof. According to preparation method of the freeze-dried tablets, a functional leavening agent, functional germinated brown rice, Chinese herbal medicine extracts with ambient temperature stress resistance, and a stabilizer capable of effectively improving stability are added in the yoghurt fermentation process; through the adoption of a variable-temperature yoghurt fermentation technology, the propagation of lactic acid bacteria is maximized, and the ambient temperature stress resistance of lactic acid bacteria is improved; yoghurt and fruit puree are pre-processed by adopting a non-thermal processing technology, so that the sundry bacteria contamination is prevented during the process, the juice yield of fruit juice is increased, the content of soluble cellulose of the fruit puree is increased, and the browning of the fruit puree is prevented; in addition, a freezing protecting agent scientifically compounded and having better anti-freezing effect is added during the mixing of the yoghurt and fruit puree; finally, the freeze-dried tablets which are delicate in mouth feel, uniform in texture, stable in state, great in quantity of live bacteria, good in functionality and long in shelf life. The content of live bacteria in the freeze-dried tablets is 1.55*10<11>-2.52*10<11> CFU/g, and the shelf life is 30-36 months at the normal temperature.

The invention discloses a high-temperature reservoir chemical flooding airtight polymer preparation device. The high-temperature reservoir chemical flooding airtight polymer preparation device comprises a dry powder storage tank, a screw feeder, a receiving hopper, a jet device, a curing tank and a water supply system; the water supply system is communicated with the water inlet of the jet device; the dry powder storage tank, the screw feeder, the receiving hopper, the jet device and the curing tank are orderly communicated with each other to form an airtight polymer preparation system; the high-temperature reservoir chemical flooding airtight polymer preparation device further comprises a nitrogen supply system which is communicated with the dry powder storage tank, the receiving hopper and the curing tank by use of a nitrogen supply pipeline, respectively; a nitrogen sealing pressure control system is arranged on the nitrogen supply pipeline. The high-temperature reservoir chemical flooding airtight polymer preparation device is capable of preparing polymers under the working condition of nitrogen isolated from oxygen, and therefore, the nitrogen airtight preparation of a polymer solution is realized, the content of dissolved oxygen in the polymer solution is greatly reduced, the problem of relatively high oxygen concentration in the polymer solution obtained by use of an open hydraulic jet flow polymer preparation device is solved and the requirement indexes of high-temperature reservoir chemical flooding on the oxygen content of the polymer solution are satisfied.

The invention discloses a freeze-dried foodstuff and a preparation method thereof. In the fermentation process of yoghourt, a functional starter, germinated brown rice, Chinese herbal medicine extract with anti-heat-and-cold irritability and a stabilizing agent capable of effectively enhancing stability are added; temperature-varying yoghurt fermentation enables propagation of lactic acid bacteria to be maximized and anti-heat-and-cold stress capability of lactic acid bacteria to be improved; non-thermal processing technology is employed for pretreatment of yoghurt and fruit paste so as to prevent infection with infectious microbes in preparation process, improve fruit juice yield, increase the content of soluble cellulose in the fruit paste and prevent browning of the fruit paste; and a scientifically compounded cryoprotectant with good anti-refrigeration effect is added during mixing of the fruit paste and the yoghurt. Eventually, the prepared freeze-dried foodstuff has fine mouthfeel, uniform texture, stable state, a great number of live bacteria, strong functionality and long shelf life, wherein the content of the live bacteria is 1.55 * 10<11> to 2.52 * 10<11> CFU/g, and the shelf life is 30 to 36 months at normal temperature.

The invention relates to a cultural relic cleaning device and method. A gas tank and an air source are connected with the gas inlet end of a gas-liquid mixing pump in a parallel mode through a gas inlet pipeline and an air branch respectively, and a gas control valve and an air valve are arranged on the gas inlet pipeline and the air branch respectively. A cleaning liquid pool and a tap water source are connected with the liquid inlet end of the gas-liquid mixing pump in a parallel mode through a water inlet pipeline and a tap water inlet pipe respectively, and a water control valve and a tap water valve are arranged on the water inlet pipeline and the tap water inlet pipe respectively. The outlet of the gas-liquid mixing pump is connected with the inlet end of a mixing tank through a gas-liquid mixing fluid water inlet pipe, the outlet end of the mixing tank is connected with a water tank aeration head and/or a handheld aeration spray nozzle through a gas-liquid mixing fluid water outlet pipe, and the water tank aeration head is placed in a cleaning water tank. The cultural relic cleaning device and method avoid the damage to brittle cultural relics, enable the cultural relics to be kept in an oxygen-deficient environment all the time in the cleaning process, are high in efficiency, protect the environment, save water, reduce the cleaning cost, and are particularly suitable for cleaning the cultural relics made of brittle materials.

The invention relates to a permeable reaction material for nitrate pollution of underground water. The permeable reaction medium material consists of quartz sand, denitrifying bacteria, chitosan, CaCl2, sodium alginate, coated nano iron and a Na2HPO4-NaH2PO4 buffering solution with the pH value of 7 at a mass ratio of (1-3):(0.1-0.5):(1-3):(1.5-3):(0.5-1):(0.5-1.5):50. The invention also discloses a method for preparing the permeable reaction material. By adopting the permeable reaction medium material, not only can the carbon source be released for the growth of microorganisms, but also the reducing environment of the underground water can be enhanced, the denitrifying rate is increased, the water quality is purified, and the secondary pollution problem of the nitrate reduction product can be effectively avoided.

The invention discloses a liquid fertilizer capable of preventing soil-borne diseases. The liquid fertilizer is prepared from the following raw materials, by weight, 36-40 parts of biogas residue mud, 5-7 parts of sodium potassium tartrate tetrahydrate, 6-8 parts of citric acid, 40-50 parts of corn germ meal, 15-19 parts of urea, 55-65 parts of dry chicken manure, 120-140 parts of waste livestock and poultry feathers, 6-7 parts of copper sulphate, 4-6 parts of ferrous sulphate, 4-5 parts of GM microbial preparations and a proper amount of water. Biogas residue mud, chicken manure and the like are employed in the raw materials of the liquid fertilizer and contain a lot of microbes with various kinds, the GM microbial preparations are added to raise the beneficial bacterium content, thus the liquid fertilizer becomes a microbe resource base, the soil microbial community structure can be adjusted after drip irrigation and spraying of the liquid fertilizer, the soil microbial diversity is raised, the soil micro-ecological environment is improved, the survival scope of plant pathogens is narrowed, and therefore the purpose of preventing soil-borne diseases is achieved.

The invention relates to a preparation method of wolfberry pulp. The preparation method comprises the following steps: firstly, screening fresh wolfberries, cleaning and draining off to obtain clean wolfberries; secondly, mixing the clean wolfberries with vitamin C and citric acid, and pulping and grinding under a low-oxygen condition to obtain raw wolfberry pulp; thirdly, heating the raw wolfberry pulp, and separating the pulp and seeds to obtain primary wolfberry pulp; and fourthly, carrying out ultrafine grinding on the primary wolfberry pulp, degassing and sterilizing to obtain the wolfberry pulp. The wolfberry pulp is ultrafine-ground in a high-speed shearing mode, so that the sizes of ground wolfberry pulp can be reduced; the wolfberry pulp is heated before grinding to facilitate the dissolving of pectin in wolfberry pulp and improve the viscosity of the wolfberry pulp particles; besides, the serious layering phenomenon of the wolfberry pulp containing macromolecular substances polysaccharide, protein and the like can be avoided by operations of reducing the sizes of the ground wolfberry pulp and increasing the viscosity.

The invention discloses a fruit and vegetable lactic acid bacteria tablet and a preparation method thereof. According to the preparation method, a functional fermenting agent, germinated brown rice, a Chinese herbal medicine extract resistant to cold and heat stress, and a stabilizing agent capable of effectively improving the stability are added in a yoghourt fermentation process; through a variable temperature yoghourt fermentation process, the multiplication of lactic acid bacteria can be maximum, and the ability resistant to cold and heat stress of the lactic acid bacteria is improved; yoghourt and fruit and vegetable puree are preprocessed through a non-thermal processing technology, so that bacterium infection in the process can be avoided, the fruit and vegetable juice production yield is increased, the content of soluble cellulose in the fruit and vegetable puree is increased, and browning of the fruit and vegetable puree is prevented; a cryoprotectant which is scientific in compounding and higher in freezing resistance effect is added when the fruit and vegetable puree and the yoghourt are mixed. The finally prepared fruit and vegetable lactic acid bacteria tablet is delicate in taste, uniform in texture, stable in state, natural in quality, large in quantity of living bacteria, high in functionality and long in quality guarantee period; the quantity of the living bacteria is 1.75*10<11>-2.55*10<11> CFU/g, and the quality guarantee period is 30-36 months at the room temperature.

The present invention discloses a freeze-dried fruit and vegetable yogurt tablet and a preparation method thereof. Functional fermenting agents, germinated brown rice, Chinese herbal extract with resistance to cold and heat stress and stabilizers which can effectively enhance stability are added in the yogurt fermentation process; lactic acid bacteria proliferation can be maximized through variable-temperature yogurt fermentation technology to improve the resistance to cold and heat stress of the lactic acid bacteria; non-thermal processing technology is used for the pretreatment of yogurt and fruit and vegetable pulp in order to prevent mixed bacterium contaminants in the fermentation process, improve juice yield of the fruit and vegetable pulp, increase soluble cellulose contents of the fruit and vegetable pulp, and protect the fruit and vegetable pulp from browning; scientifically formulated cryoprotectants with better anti-freezing effect are added when the fruit and vegetable pulp is mixed with the yogurt; and the freeze-dried fruit and vegetable yogurt tablet is finally obtained. The freeze-dried fruit and vegetable yogurt tablet is fine and smooth in mouthfeel, uniform in texture, stable in state, natural in quality, high in viable bacteria counts (1.75 * 10<11> - 2.55 * 10<11> CFU/g), strong in functionality and long in shelf life (30-36 months at room temperature).

The invention discloses high-solubility compound protein powder and a preparation method thereof. Soybean protein isolate, whey protein concentrate and phospholipid are taken as main raw materials, stevia rebaudiana is processed into a stevia rebaudiana extract at low temperature, the effective ingredients and the bioactive ingredients of the stevia rebaudiana can be maximumly retained, the extraction rate is high, the flavor is pure, the color and cluster are natural, no licorice taste exists, the stevia rebaudiana extract is scientifically compounded with main materials, antifreeze polypeptides, dietary fiber flour, bee pupa hydrolysates and wheat malt powder are added, and then the compound protein powder which is appropriate in mouthfeel, good in solubility, comprehensive in nutrition, high in bioactivity and wide in suitable crowd is prepared. According to the preparation method, a non-thermal processing technique is adopted, the working efficiency is high, energy consumption is little, environmental friendliness is achieved, no pollution is generated, introduction of food additives and chemical auxiliaries is reduced, the food safety is effectively improved, the product quality is improved, the production cost is reduced, the low-carbon production objective is achieved, and large-scale and industrialized development can be achieved.

The invention provides a composite boiler water treatment agent composition integrating corrosion inhibition, scale inhibition, deoxygenization and condensed water corrosion inhibition. The composite boiler water treatment agent composition is prepared from, by mass, an organic reductant 4-30%, polyphosphate 2-15%, amine 5-50%, a catalyst 0.01-2% and deionized water 50-80%. The composite boiler water treatment agent composition can be used for the boiler of any pressure system, has the effects of corrosion inhibition, scale inhibition, deoxygenization and condensed water corrosion inhibition and does not affect the quality of steam.

The invention discloses a yoghourt slice and a preparation method thereof. In the fermentation process of yoghourt, a functional fermentation agent, functional sprouted cargo rice, Chinese herb extracts with cold and hot sensitivity resistance, and a stabilizing agent capable of effectively improving stability are added; the yoghourt is fermented under dynamic temperatures, so that the proliferation of lactic acid bacteria is maximized, and the cold and hot sensitivity resistance of the lactic acid bacteria is improved; a non-hot processing technique is adopted for pretreating the yoghourt and the pulp of fruits and vegetables so as to prevent microbial contamination during the process, increase the juice yield of the pulp of the fruits and the vegetables, increase the content of soluble cellulose in the pump of the fruits and the vegetables, and prevent the pulp of the fruits and the vegetables from generating brown stains; a refrigerating protective agent which is scientifically compounded and has a better refrigerating resistant effect is added while mixing the pulp of the fruits and the vegetables as well as the yoghourt. Finally, the prepared yoghourt slice is fine and smooth in mouth feel, homogeneous in texture, stable in state, natural in quality, high in viable count, high in functionality, and long in quality guarantee period, and the viable count is 1.75 *1011-2.55 *1011CFU/g. Under the normal atmospheric temperature, the quality guarantee period of the yoghourt slice is 30-36 months.

The invention relates to the field of aquaculture water quality improvement, in particular to a method for preparing a water quality improver from bagasse. The method comprises the following steps: (1) adding lactobacillus fermentation liquid into the bagasse, and performing mixed fermentation at the temperature of 55-60 DEG C for 5-8 days; (2) naturally air-drying a mixed fermentation product obtained in the step (1), grinding into particles with the particle sizes of 500-600 microns, and mixing the particles with urea, boric acid, potassium sulfate, tea bran and manioc wastes; (3) levigating and heating a mixed fermentation product in the step (2); (4) adding water into a mixture in the step (3), heating white phosphorus, smoking by phosphorus smoke, and sealing for fermentation. According to the method, nutritional elements necessary for alga growth are complemented, the water color is stabilized, the water body environment is friendly and healthy, the survival rate of cultured organisms is increased, the morbidity of the cultured organisms is reduced, the culture quality is improved, and very high economic benefits are brought to farmers.

The Tibet region in China has the characteristics of high altitude, low air oxygen content, large day and night temperature difference and low night temperature, so that a traditional activated sludgeprocess adopted for domestic sewage treatment at present confronts with the problems of low aeration efficiency, high energy consumption, weak functional microorganism activity and the like when being applied to the Tibet region; meanwhile, the treatment of a large amount of residual sludge threatens the ecological environment of the Tibet region. According to the method, a chemical enhanced primary treatment (CEPT) process and an integrated partial nitrosation-anaerobic ammonia oxidation (CPNA) process are combined, so that the capture of carbon and phosphorus in the inlet water and the whole-course autotrophic nitrogen removal under a low-oxygen condition are realized. The captured carbon source is used for producing biogas through anaerobic fermentation, and can supplement heat for a CPNA process under a low-temperature condition. The CEPT-CPNA process has the advantages of low energy consumption and less residual sludge generation, can solve many problems in the traditional method, and belongs to a sustainable sewage treatment process suitable for a high-altitude environment.

The invention relates to a method to deoxidize and purify titanium or titanium alloy. It adopts rare earth as element purifying agent to take deoxidizing and purification process to titanium or titanium alloy. The agent includes La 35-55wt%, Ce 25-35wt%, Nd 5-25wt%, Pr 8-10wt%, and Y 4-5wt%. The added quantity agent is 0.01-0.1% of the weight of titanium metal liquation. The titanium or titanium alloy is melted in vacuum middle frequency induction furnace lime crucible. When the temperature reaches to 1650-1720 degree centigrade, the agent would be added and quieting for 15-25 minutes and casting to gain the titanium or titanium alloy with low oxygen content.

The invention discloses a fruit and vegetable probiotic tablet and a preparation method thereof. In the fermentation process of yoghourt, a functional starter, germinated brown rice, Chinese herbal medicine extract with anti-heat-and-cold irritability and a stabilizing agent capable of effectively enhancing stability are added; temperature-varying yoghurt fermentation enables propagation of lactic acid bacteria to be maximized and anti-heat-and-cold stress capability of lactic acid bacteria to be improved; non-thermal processing technology is employed for pretreatment of yoghurt and fruit and vegetable pulp so as to prevent infection with infectious microbes in preparation process, improve juice yield of the fruit and vegetable pulp, increase the content of soluble cellulose in the fruit and vegetable pulp and prevent browning of the fruit and vegetable pulp; and a scientifically compounded cryoprotectant with good anti-refrigeration effect is added during mixing of the fruit and vegetable pulp and the yoghurt. Eventually, the prepared fruit and vegetable probiotic tablet has fine mouthfeel, uniform texture, stable state, natural quality, a great number of live bacteria, strong functionality and long shelf life, wherein the content of the live bacteria is 1.75 * 10<11> to 2.55 * 10<11> CFU/g, and the shelf life is 30 to 36 months at normal temperature.

The invention discloses a fruit puree tablet containing probiotics and a preparation method for the fruit puree tablet. According to the preparation method, a functional fermenting agent, germinated brown rice, a Chinese herbal medicine extract resistant to cold and heat stress, and a stabilizing agent capable of effectively improving the stability are added in a yoghourt fermentation process; through a variable temperature yoghourt fermentation process, the multiplication of lactic acid bacteria can be maximum, and the ability resistant to cold and heat stress of the lactic acid bacteria is improved; yoghourt and fruit puree are preprocessed through a non-thermal processing technology, so that bacterium infection in the process can be avoided, the juice production yield is increased, the content of soluble cellulose in the fruit puree is increased, and browning of the fruit puree is prevented; a cryoprotectant which is scientific in compounding and higher in freezing resistance effect is added when the fruit puree and the yoghourt are mixed. The finally prepared fruit puree tablet containing the probiotics is delicate in taste, uniform in texture, stable in state, large in quantity of living bacteria, high in functionality and long in quality guarantee period; the quantity of the living bacteria is 1.55*10<11>-2.52*10<11> CFU/g, and the quality guarantee period is 30-36 months at the room temperature.