72results about How to "Control level" patented technology

The preparation and use of nucleic acid fragments encoding fatty acid desaturase enzymes are described. The invention permits alteration of plant lipid composition. Chimeric genes incorporating such nucleic acid fragments with suitable regulatory sequences may be used to create transgenic plants with altered levels of unsaturated fatty acids.

The present invention relates to one kind of plant leavening prepared by using plant with hot and fragrant smell of propylene sulfide, yeast and lactobacillus and through fermentation. The present invention also relates to the preparation process of the leavening and its application is treating presbyopia, cataract and other diseases, promoting blood circulation; improving the functions of sexual organs, kidney, cardiac and cerebral vascular system, digestive system, etc.; resisting oxidation, senility and fatigue; lowering blood fat, blood sugar and blood pressure; etc.

The invention relates to a field of culturing microalgae, concretely to a method and an apparatus of controlling supplement of nutrient salts to culture microalgae based on optical density feedback. According to the method, an adding amount of the nutrient salts liquid is calculated through a formula (I) shown in the description, wherein alpha (g/L) is a conversion coefficient of an increment of an optical density (OD) value and an increment of microalgae cells, that is, [delta]X = [alpha][delta]OD, beta (mol/g) is a proportion coefficient of the increment of the microalgae cells and consumption amount of the nutrient salts, and [delta]OD is the increment of the optical density (OD) value of a culture medium. The increment of the optical density (OD) value of the culture medium is preset, and when the increment of the optical density of the culture medium reaches the set value, the adding amount of the nutrient salts liquid is calculated through the formula (I). Or, a time interval of detecting the optical density (OD) value is set, the increment of the optical density (OD) value of the culture medium is detected in the time interval, and the adding amount of the nutrient salts liquid is calculated through the formula (I) in accordance with the detected optical density (OD) value. The method can relatively accurately control the adding amount of the nutrient salts.

The invention discloses an intermediate-carbon high-speed cutting saw blade matrix steel and a production method thereof. The steel comprises the following components in percentage by weight: 0.20-0.40% of C, 0.10-0.30% of Si, 0.45-0.63% of Mn, not more than 0.010% of P, not more than 0.005% of S, 0.008-0.020% of Ti, 0.80-1.20% of Cr, not more than 0.005% of N, 0.020-0.050% of Al, 0.10-0.20% of Ni, 0.030-0.050% of V and the balance of Fe and inevitable impurities, wherein Als/N is not less than 30%, Mn +Cr is 1.45-1.85. The production method comprises the following steps of: desulfurizing molten iron, smelting in a converter, carrying out vacuum treatment, casting continuously, hot-rolling continuously, cooling, coiling, leveling, quenching and tempering. Facts prove that the steel has pure steel quality, strong toughness, high wearing resistance and low cost at the same time. The production method of the steel is simple in process and stable in product property.

The invention discloses a method for screening and enrichment culture of nitrifying bacterium floras with alternation of intermittent ammonia nitrogen flow and intermittent operation, and belongs to the technical field of water treatment. According to the method, activated sludge containing nitrifying bacteria is used as inoculation sludge, and the screening and enrichment culture of the nitrifying bacterium floras are achieved by using a bacterial fermentation tank by virtue of a method for alternation of intermittent ammonia nitrogen flow and intermittent operation. The initial ammonia nitrogen load is gradually increased by using intermittent operation so as to improve the ammonia-nitrogen oxidation rate, and the ammonia nitrogen flow and intermittent operation maintain the ammonia-nitrogen oxidation rate and achieve a low nitrite accumulation rate. By adopting the method, the screening and enrichment culture of the nitrifying bacterium floras can be achieved in a short time. The nitrifying bacterium floras obtained by the method disclosed by the invention have an advantage in numbers in total bacterial count, and a high ammonia-nitrogen oxidation rate and a high nitrite oxidation rate can be achieved.

The invention relates to the field of microorganisms, and discloses lactobacillus fermentum capable of reducing blood uric acid. The strain is named 2644 strain, and is preserved at the China GeneralMicrobiological Culture Collection Center on 19th, November, 2018, and a microbial preservation number is CGMCC NO.16754; and the preservation authority address is NO.3 1# Courtyard, Beichen West Road, Chaoyang District, Beijing, and the microorganism is classified and named Lactobacillus fermentum. The strain can effectively reduce the content of the blood uric acid; and not only can intake of exogenous purines be reduced, but also discharge of internal uric acid from an intestinal tract can be promoted so that the blood uric acid level of a body can be more effectively controlled.

The invention discloses a device for testing slump of a concrete mixture. The device comprises a lower electrical push rod mechanism, a middle electrical push rod mechanism, an upper electrical push rod mechanism, a slump cylinder and a spiral movement mechanism, wherein the lower electrical push rod mechanism comprises a lower base, the lower base is arranged on ground, and a lower electrical push rod is arranged on the lower base; the middle electrical push rod mechanism comprises a middle base, and a middle electrical push rod is arranged on the middle base; an extending rod of the middle electrical push rod is upwards connected with an upper base, and the slump cylinder is connected with the upper base; the upper electrical push rod is positioned just above the slump cylinder, and an extending rod of the upper electrical push rod is vertically and downwards connected with the spiral movement mechanism; the spiral movement mechanism is connected with a vertical vibration bar. The invention also discloses a use method of the device for testing the slump of the concrete mixture. The device has the advantage that the artificial vibration is not needed, so that the error due to theartificial vibration is avoided, and the stability and accuracy in testing are improved.

The invention provides a method for preparing pineapple wine. The method comprises the following steps: (1) pineapples are subjected to peel removing, core removing, and grinding to be made into a pulp; (2) SO2 is added into the pineapple pulp to inhibit the growth of bacteria, wherein the quantity of the added SO2 is 50-120 mg per liter of pineapple pulp; pectinase is added into the pineapple pulp for enzymolysis to obtain enzymatic hydrolysate, wherein the weight of the added pectolase is 0.6-1.1 percent of that of the pineapple pulp; (3) the sugar degree Brix of the enzymatic hydrolysate is adjusted to 20-24 degree, and the pH of the enzymatic hydrolysate is adjusted to 2.8-3.6, then yeast, of which the weight is 0.04-0.06% of that of the enzymatic hydrolysate, is added into the enzymatic hydrolysate, and the enzymatic hydrolysate is subjected to main fermentation for 7-12 days at the temperature of 16-25 DEG C and then is subjected to post fermentation for 8-10 days at the temperature of 14-15 DEG C; (4) the fermentation liquor obtained in step (3) is subjected to filtration, clarifying treatment, sterilization and then is aged for one month, and finally the pineapple wine is obtained. The pineapple wine provided by the invention is faint yellow, clear and transparent, has a pure soft pineapple taste and wine bouquet, is tasty and refreshing, and has long aftertaste.

The invention relates to a streptococcus faecium function signal molecule preparation, a streptococcus faecium bacteria strain is carried out the anaerobic fermentation at 35 to 38 DEG C and the centrifugal concentration to obtain a concentrate of streptococcus faecium bacteria, the bacterial cell wall is broken by high pressure, and the freeze-drying is carried out to obtain the preparation raw powder containing the streptococcus faecium function signal molecules. As the streptococcus faecium function signal molecules can be combined with a specific receptor at the intestinal epithelial cells, the issued signal can induce the excessive cholesterol in the body to carry out the transformation, control the activity of the cholesterol synthase, reduce the excessive cholesterol generated or absorbed in the human body, and effectively control the obesity. The streptococcus faecium function signal molecule preparation is simultaneously matched with a bifidobacterium function signal molecule preparation, a lactobacillus function signal molecule preparation and a bacteroides function signal molecule preparation to be prepared into a series of products containing various probiotics function signal molecules for lipid-lowering and weight-losing, thus fundamentally reducing the risks of coronary heart disease, atherosclerosis, heart diseases, angina, myocardial infarction, obesity and other diseases during the process of being eaten by the people.

The invention provides a preparation method for mango-pawpaw mixed fruit wine. The method comprises the following steps: 1) a mango and a pawpaw are subjected to peel removing, coring and mashing, so as to obtain mango syrup and pawpaw syrup; 2) mixing the mango syrup and the pawpaw syrup as per the weight ratio of 2 to 1,adding the mixed syrup of every liter with 50-100 mg of SO2 anti-bacteria, and blending the sugar degree of the mixed syrup to 20 degrees Brix; 3) adding the blended liquid in the step 2) with yeast of which the weight is 0.04-0.06% of that of the blended liquid, fermenting at the pH value of 3.6-4.4 and temperature of 23-31 DEG C, and stopping fermenting when the residual sugar in the blended liquid is 1%; and 4) performing filtering, clarifying, sterilization, and aging to the fermentation liquor in the step 3), so as to obtain the mango-pawpaw mixed fruit wine. According to the invention, the nutritional ingredients in the mango and the pawpaw are integrated, the produced mixed fruit wine is more fragrant in the fumes of wine, and various functions of health care and disease prevention can be realized.

The invention relates to a sulfur bearing steel electro-slag remelting process, which belongs to the technical field of electro-slag metallurgy. During electro-slag remelting, a ternary slag system of CaF2-SiO2-CaO is selected; before remelting, slag materials are fully dried by adopting a baking oven, so that the moisture in the slags is reduced; the electro-slag production process is carried out under the protection of dry argon atmosphere. Arc striking adopts graphite electrode cold arc striking; during slag melting, fluorite powder is firstly added, and after the fluorite powder is added, silicon powder and lump lime are alternately and slowly added, so that the slag materials are prevented from fully covering a hearth. A certain amount of iron sulfide is added during the slag melting process and the remelting process for deoxidizing molten slags. The electro-slag remelting filling ratio is designed to range from 0.65 to 0.75, and the electro-slag remelting rate (Kg/h) is equal to (0.8 to 0.95) x the diameter (mm) of a crystallizer. The sulfur bearing steel electro-slags produced by utilizing the process provided by the invention are favorable in ingot surface quality, stable in recovering sulfur content in steel, and uniform in component distribution, and meet the technical protocol requirements.

The invention discloses a device used for shear wall elevation and levelness control and a use method thereof. The device comprises a levelness control plate, fine adjusting supporting rods are connected to the end face of one side of the levelness control plate, a threaded part is arranged at the end, far away from the levelness control plate, of each fine adjusting supporting rod, and the fine adjusting supporting rods are movably connected to fine adjusting supporting rod support bases. The method includes the steps that S1, when a prefabricated shear wall is produced and manufactured, the fine adjusting supporting rod support bases are pre-buried; S2, the fine adjusting supporting rods are screwed into the fine adjusting supporting rod support bases and adjusted, so that the height of the end face of the top of the levelness control plate is consistent with the height of control elevation of the bottom of a prefabricated wallboard on the upper layer; S3, after concrete reaches certain strength, it is only needed that the prefabricated shear wall wallboard on the upper layer is directly placed on the levelness control plate. The elevation and levelness of the wallboard are effectively controlled, the installation period of the prefabricated wallboard is shortened, labor cost is reduced, and meanwhile wet construction workloads of operators in a construction site are reduced.

The invention discloses an earth excavation method for foundation pit groups with different depths on two sides of an operation subway. A deep foundation pit and a shallow foundation pit are arranged on the two sides of the subway respectively. The earth excavation method comprises the following steps that the bottom elevation of the shallow foundation pit serves as a depth boundary, and the deep foundation pit is divided into a shallow area higher than the depth boundary and a deep area lower than the depth boundary; earth excavation is carried out on the shallow foundation pit and the shallow area of the deep foundation pit, earth in the shallow area of the shallow foundation pit and the shallow area of the deep foundation pit is horizontally partitioned, and block-by-block, layered and relative excavation is carried out in the direction from the position away from the subway to the position close to the subway; and earth excavation is carried out on the deep area of the deep foundation pit, horizontal partitioning is carried out on the deep area with the shallow area as the standard, and block-by-block and layered excavation is carried out in the direction from the position away from the subway to the position close to the subway. The earth excavation method solves the technical problem of lateral deformation caused by unbalanced excavation on the two sides of the subway.

The invention discloses a metal processing manipulator with a tool replacement function and relates to the technical field of manipulators, in particular to the metal processing manipulator with the tool replacement function. The metal processing manipulator comprises a connecting base, a horizontal control rack and a rotating mechanism. A supporting column is arranged on the upper portion of theconnecting base. The upper portion of the supporting column is provided with a connecting disk. A horizontal support and an air pump are arranged on the upper portion of the connecting disk. The air pump is located on one side of the horizontal support. An electric box is arranged on one side of the horizontal control rack. A supporting platform is arranged above the electric box. A control mechanism is arranged below the end, far away from the supporting platform, of the rotating mechanism. By adopting the metal processing manipulator with the tool replacement function, the internal structures of equipment is reduced as much as possible while the functions of the equipment are maintained; the improved device is easier and more convenient to use in the using process; moreover, the metal processing manipulator is more convenient to maintain and operate in the daily using process, and the using requirements of people are effectively met.

The invention relates to the technical field of anchor rod embedded part installation, and discloses an installing and positioning mechanism and method for a large embedded part anchor rod structure.The installing and positioning mechanism comprises two parallel supporting bases at the bottom of the embedded part anchor rod structure and a top positioning plate. The supporting bases are fixedly connected with a foundation, and the two supporting bases are fixedly connected through strengthening pieces. Supporting plates are fixedly arranged on the upper surfaces of the two supporting bases, and the top faces of the supporting plates are horizontal planes. The two ends of each supporting plate are fixedly connected with the upper surfaces of the two supporting bases correspondingly. The width direction of the supporting plates is the vertical direction, and the top faces of the supporting plates make contact with the bottom of the embedded part anchor rod structure and support the embedded part anchor rod structure. The positioning plate is provided with positioning holes, and anchor rods of the embedded part anchor rod structure correspondingly penetrate the positioning holes. According to the installing and positioning mechanism and method, the levelness of two layers of rectangular frameworks in the embedded part anchor rod structure is effectively controlled, it is guaranteed that the elevation of the anchor rods and the distance between the anchor rods meet the design requirement, the anchor rods are more smoothly in butt joint with anchor rod holes in pier stud feet in the later period, the installing time is saved, and the labor intensity of workers is lowered.

The invention relates to a workbench capable of automatically adjusting levelness and height. The workbench capable of automatically adjusting the levelness and the height comprises at least three height-adjustable supporting leg assemblies for supporting the workbench surface, wherein each supporting leg assembly comprises an upper supporting leg, a lower supporting leg and a lifting mechanism arranged between the upper supporting leg and the lower supporting leg; a hydraulic inlet and a hydraulic outlet are formed in the side surface of a cylinder body and a cylinder cover of the lifting mechanism respectively; the hydraulic inlet and the hydraulic outlet are connected with a hydraulic pump through a hydraulic pipe; a biaxial level sensor and a height sensor are arranged on the lower end surface of the workbench surface; the biaxial level sensor and the height sensor are connected with a processor unit respectively; the processor unit controls opening of a through hole in the lifting mechanism, and a medium flows from the upper part of a piston body assembly in the lifting mechanism to the lower part of the piston body assembly so as to move the cylinder body downwards to reduce the height of the corresponding upper supporting leg; or, the through hole is closed, the hydraulic pump is started up, and the medium flows from the lower part of the piston body assembly to the upper part of the piston body assembly so as to move the cylinder body upwards to increase the height of the corresponding upper supporting leg till the workbench surface is level and reaches a corresponding height.

The invention discloses a refining method of low-carbon and low-silicon manganese-contained aluminum killed steel liquid, and belongs to the technical field of steel and iron metallurgy. The refining method properly controls the quantity of slag through adding lime and refining slag, and accurately feeds into a calcium line through Ca-Al-Si mass correlation to stably control an inclusion state of the steel liquid, so that the casting capacity of continuous casting steel liquid of this steel is improved, the quality of continuous casting products is guaranteed, the economic benefit is higher, and the popularization and application prospect is excellent.

The invention relates to an oligopeptide functional food and a preparation method thereof. The oligopeptide functional food is prepared from, by weight, 15-21 parts of skipjack oligopeptide, 12-20 parts of whey oligopeptide, 8-17 parts of corn oligopeptide, 6-12 parts of sipunculid oligopeptide, 3-15 parts of a cistanche deserticola extract, 4-12 parts of an astragalus extract, 2-10 parts of a poria cocos extract, 2-8 parts of a cornus extract and 0.01-0.1 part of decavitamin. The oligopeptide functional food is safe, has no toxic and side effects, neither can generate dependency and drug resistance, nor can be accumulated in the body, has a synergistic effect on cells, tissue and metaboilic level while ensuring low purine ingestion, inhibits synthesis of uric acid, promotes excretion of the uric acid, also repairs the damaged liver and kidney tissue, ensures the smooth circulation of the uric acid in the body, and achieves the effect of addressing both symptoms and root causes. The preparation method has the advantages that the main active ingredients can be retained to the utmost extent, the yield is increased, the extraction and preparation time can also be effectively reduced,and the energy consumption is reduced.

The invention discloses a medlar dew wine. The medlar dew wine is prepared in a way that base wine, medlar juice, red dates juice and licorice root leach liquor are processed by production technologies including blending, enzymolysis, clarification stabilizing treatment, ageing, freezing, filtering, checking and pasteurization. The invention also provides a preparation technology for the medlar dew wine. The preparation technology for the medlar dew wine is an elaborative operation, fruit dried products and homologous food materials are taken as raw materials, and the nutrition ingredients ofeach category of raw materials are fully extracted to guarantee a product health value. The medlar, the red dates and the licorice root are adopted as raw materials to carry out leaching concentrationto prepare refined extraction liquid, and edible alcohol is taken as the wine base to carry out enzyme processing, blending, ageing, fining, freezing and filtering to brew the medlar dew wines of different alcoholic strengths. The medlar dew wine processed by the medlar, the red dates and the licorice root has the functional characteristics of product diversification, nutrition, health care and the like, and is popular with consumers.

The invention discloses a rotary ring adjustor and the usage thereof and solves problems of shutdown and large manpower consumption caused by the fact that a rotary ring commonly cannot be maintained horizontal after being mounted currently. The rotary ring adjustor comprises an adjustor support, a rotatable adjusting bolt connected with and positioned above the adjustor support, a horizontal adjustor shell arranged above and in threaded connection with the adjusting bolt, a balance support arranged above the horizontal adjustor shell and connected with the horizontal adjustor shell through a cylindrical pin, and a bubble level arranged on the balance support. The height and levelness of the rotary ring adjustor can be adjusted through rotating the adjusting bolt, and whether the balance support is maintained horizontal can be determined by observing relative positions of a bubble in the bubble level, so that levelness of a rotary ring placed on the rotary ring adjustor is guaranteed. The rotary ring adjustor is quite simple to operate and extremely high in accuracy.

The invention discloses a template positioning tool and method for external wall concrete cornice pouring. Through the production, installation and reinforcement of a shaping mold, a component formedby pouring is not plastered, the construction period is saved, the cost is reduced, and the construction quality is ensured. The tool comprises cornice templates formed for pouring concrete and support frames at the lower parts of the cornice templates. Each of the cornice templates is a long template with an L-shaped cross section and is divided into a flat plate and a vertical plate, and the cornice templates and the support frames are installed together by dovetail screws. Each of the cornice templates corresponds to a plurality of support frames. The support frames are installed on an outer wall by expansion bolts. The heights of the vertical plates of the cornice templates are consistent with the heights of upper vertical segments of the support frames. The widths of the flat plates of the cornice templates are larger than the lengths of horizontal segments of the support frames. Through the use of the tool, the process of strengthening a cast-in-place concrete component templateis simplified, and the tool is simple and efficient and has a good application value.

The invention relates the technical field of the semiconductor, and specifically is a wafer gluing system used for a lithography machine. The system comprises a sucking disk, a mounting base, a rotaryplate and a first motor; the rotary plate is installed in the mounting base; the first motor is used for driving the rotary plate to rotate; the system further comprises a liquid storage tank, a liquid level sensor, an adjusting module and a controller; the liquid level sensor is matched with the liquid storage tank to detect the inclination of the sucking disk; the adjusting module is used for adjusting the horizontal position of the sucking disk; the adjusting module is installed at the top of the rotary plate through a fixed rod; the liquid level sensor detects the liquid level of the liquid storage tank, so as to judge whether the sucking disk is located on a horizontal position or not; and when the sucking disk is inclined, the controller adjusts the sucking disk onto the horizontalposition through the adjusting module and the liquid level sensor. The wafer gluing system provided by the invention is mainly used for the lithography technique of the wafer, can automatically adjustthe levelness of the sucking disk, can prevent the sucking disk from shaking, and can improve the gluing efficiency of the wafer.

The invention discloses a preparation method of composite fruit and vegetable fermented wine. The method is characterized in that: taking and mixing kiwi fruit juice, carrot juice, tomato juice and apple juice according to a mass ratio of (1-3):(1-3):(1-3):(5-7), adding sucrose, and adjusting the pH value of the obtained mixture to 3.7-4.4; adding yeast into the mixture, wherein the yeast is a mixture of brewer's yeast and dry yeast; performing fermentation at 25-27 DEG C for 3-5 days, performing filtration, and fermenting a filtrate at 25-27 DEG C for 15-20 days; filtering and separating thefermented materials, clarifying a filtrate, performing filtration again, and sterilizing the filtrate to obtain the composite fruit and vegetable fermented wine. The composite fruit and vegetable fermented wine prepared by the method is light orange yellow in color, mellow in wine quality and pure in taste, and has the functions of improving immunity, lowering blood pressure, reducing blood fat, preventing cancer, regulating metabolism, promoting urination, benefiting the liver, improving eyesight, promoting blood circulation and controlling cholesterol level in vivo.