16results about How to "Yield maximization" patented technology

The invention relates to the technical field of microbial metabolism, in particular to a biological reagent production optimization method and system based on microbial metabolism characteristics. The method comprises the following steps: acquiring a biological reagent to produce a microbial strain, and determining the component proportion of a microbial culture medium and optimal microbial culture conditions; carrying out microorganism culture metabolism recording and metabolic flow path analysis on the biological reagent production microorganism strain, and simultaneously carrying out metabolic characteristic analysis to obtain metabolic quantitative characteristics of the biological reagent production microorganism; carrying out metabolic bottleneck node identification analysis on the metabolic flow path of the biological reagent production microorganisms to obtain metabolic bottleneck nodes of the biological reagent production microorganisms; and carrying out microbial production optimization on the corresponding biological reagent production microbial culture metabolism process, and carrying out production post-treatment and purification separation to obtain a biological reagent production optimization product. The production efficiency of the biological reagent can be remarkably improved, so that the stability and the consistency of the biological reagent product are ensured.

A method for preparing 2,3,3,3-tetrafluoroprop-1-ene comprising (a) providing a starting composition comprising at least one compound having a structure selected from Formulae I, II and III:          CX2=CCl-CH2X     (Formula I)          CX3-CCl=CH2     (Formula II)          CX3-CHCl-CH2X     (Formula III) wherein X is independently selected from F, Cl, Br, and I, provided that at least one X is not fluorine; (b) contacting said starting composition with a first fluorinating agent to produce a first intermediate composition comprising 2-chloro-3,3,3-trifluoropropene and a first chlorine-containing byproduct; (c) contacting said first intermediate composition with a second fluorinating agent to produce a second intermediate composition comprising 2-chloro-1,1,1,2-tetrafluoropropane and a second chlorine-containing byproduct; and (d) catalytically dehydrochlorinating at least a portion of said 2-chloro-1,1,1,2-tetrafluoropropane to produce a reaction product comprising 2,3,3,3-tetrafluoroprop-1-ene.

The invention discloses a preparation method of a cell membrane-based nucleic acid drug-loaded biological vesicle inhalation preparation. The preparation method comprises the following steps: preparing target cells into a cell suspension; repeatedly extruding the cell suspension through an extrusion device to obtain extrusion liquid; carrying out differential centrifugation on the extruded liquid, and collecting the biological vesicles; loading a nucleic acid drug into the biological vesicles; wherein the differential centrifugation comprises two centrifugation steps, and the centrifugation conditions are as follows: 1) the centrifugal force is 2,000-10,000 g, and the centrifugation time is 10-60 minutes; and (2) the centrifugal force is 16,000 to 100,000 g, and the centrifugal time is 10 to 120 minutes. The invention also discloses application of the cell membrane-based nucleic acid drug-loaded biological vesicle inhalation preparation obtained by the preparation method in preparation of drugs for treating lung diseases. The nucleic acid drug-loaded biological vesicle inhalation preparation prepared by the invention can be used for efficiently loading a nucleic acid drug and efficiently delivering the nucleic acid drug to the lung through atomization administration, and the basic character characterization and the drug-loading capability of the atomized preparation are basically consistent with those of the preparation before atomization.

The present invention discloses an agricultural machinery management system based on GPS positioning, including an agricultural machinery positioning unit, an information collection unit, an information processing unit, a scheduling execution unit, and an execution display unit, and the present invention relates to the technical field of agricultural machinery management. The agricultural machinery management system based on GPS positioning can obtain the position of agricultural machinery in real time through accurate GPS positioning information, so as to perform effective scheduling calculation and processing, ensure that agricultural machinery is reasonably allocated according to the actual needs of each target scheduling area, and reduce resource waste; by analyzing the cultivated land area and the number of agricultural machinery in each target scheduling area, the demand for agricultural machinery allocation is calculated, and then the accurate number of agricultural machinery transferred out and transferred in is obtained; it helps to optimize the use efficiency of agricultural machinery and ensure that the farming needs of each area are met; by calculating the energy consumption of each scheduling plan in the scheduling execution unit, the plan with lower energy consumption is given priority, which not only reduces the operating cost, but also meets the environmental protection requirements.

The invention relates to the technical field of edible mushroom harvesting, in particular to an automatic edible mushroom harvesting device and method, and aims to solve the problems that traditional manual harvesting is high in labor intensity, low in efficiency, insufficient in accuracy and the like. A walking mechanism for driving the underframe to walk is arranged below the underframe; the harvesting mechanism comprises a support, a mechanical arm arranged on the support, a picker arranged at the tail end of the mechanical arm and a stick taking assembly arranged on the support on one side of the mechanical arm, and the stick taking assembly is used for separating mushroom sticks from the fruiting frame; the harvesting mechanism further comprises a collector; picking operation of a large number of shiitake mushrooms can be automatically completed, and the labor intensity of workers is relieved; by arranging the lifting mechanism, the walking mechanism, the reversing mechanism and the visual recognition system, automatic switching of fruiting stations is achieved, meanwhile, subjectivity and errors caused by manual judgment are avoided, and harvesting efficiency and accuracy are improved.

A method for preparing 2,3,3,3-tetrafluoroprop-1-ene comprising (a) providing a starting composition comprising at least one compound having a structure selected from Formulae I, II and III:          CX2=CCl-CH2X     (Formula I)          CX3-CCl=CH2     (Formula II)          CX3-CHCl-CH2X     (Formula III) wherein X is independently selected from F, Cl, Br, and I, provided that at least one X is not fluorine; (b) contacting said starting composition with a first fluorinating agent to produce a first intermediate composition comprising 2-chloro-3,3,3-trifluoropropene and a first chlorine-containing byproduct; (c) contacting said first intermediate composition with a second fluorinating agent to produce a second intermediate composition comprising 2-chloro-1,1,1,2-tetrafluoropropane and a second chlorine-containing byproduct; and (d) catalytically dehydrochlorinating at least a portion of said 2-chloro-1,1,1,2-tetrafluoropropane to produce a reaction product comprising 2,3,3,3-tetrafluoroprop-1-ene.

The present invention discloses a method for separating α-lactalbumin and β-lactoglobulin, and belongs to the technical field of dairy product processing. The method comprises the following steps: Step 1: Degreasing a milk-based raw material to obtain skimmed milk; Step 2: Microfiltration of the skimmed milk, the permeate is whey containing α-lactalbumin, β-lactoglobulin components, lactose and other components. Step 3: The permeate is subjected to hydrated calcium ion-assisted ultrafiltration treatment to remove lactose and minerals in the whey, and Step 4: Two-phase aqueous extraction treatment is performed to achieve separation of α-lactalbumin and β-lactoglobulin. Step 5: The upper phase and the lower phase are respectively subjected to hydrated calcium ion-assisted ultrafiltration treatment and electrodialysis technology desalination, and α-lactalbumin and β-lactoglobulin are concentrated. The method improves the utilization rate of milk and dairy products and the economic value of the treatment process, reduces production costs, is convenient for continuous operation, and is suitable for industrial production.

The application provides a livestock farm grass collection and processing device and a control method thereof. A regeneration control index of a target grassland is determined according to the natural growth height and stubble height of the forage grass in the target grassland. A harvesting regulation relationship between the forage harvesting amount and the traveling speed in mobile harvesting is determined according to the regeneration control index and the forage loss characteristics of a forage processing unit in mobile harvesting. A forage harvesting influence state of the forage processing unit in mobile harvesting in each growth cycle is determined according to the peak forage nutrition height of the target grassland in each growth cycle and the regeneration control index. A harvesting traveling speed in each growth cycle of forage harvesting is determined according to each forage harvesting influence state and the harvesting regulation relationship. The traveling speed of the forage processing unit is controlled by using the corresponding harvesting traveling speed in each growth cycle to harvest forage grass. The relationship between the forage harvesting operation parameters and the grassland regeneration rules is matched based on the above scheme.

The invention relates to the field of data processing, in particular to a temperature control method and system in an algae culture pond, and the method comprises the steps: obtaining the related data of the algae culture pond, and drawing a monitoring curve; obtaining the growth state quantity corresponding to each time according to the monitoring curve, and obtaining the growth degree and the growth cycle of each time; when the growth degree is reduced, the algae are in the last stage of the growth period, the last-stage growth degree of the algae is obtained according to the growth difference of all the time, and whether a temperature control system of the algae culture pond is adjusted or not is judged according to the last-stage growth degree corresponding to all the time, so that the suitable growth environment of the algae is achieved; and obtaining the harvest time of algae growth according to the turning point of the period corresponding to the last-stage growth degree. According to the method, the temperature is adjusted to the optimal cultivation temperature in time, normal growth and reproduction of algae are promoted, it is ensured that harvesting is conducted when the algae biomass reaches the peak value, and therefore the yield and quality are maximized.

The application belongs to the technical field of desulfurizer, and discloses a natural gas desulfurizer, a preparation method and application thereof, the natural gas desulfurizer comprises 2-(2-morpholine-4-ethoxy)-ethanol and N-methyl diethanolamine with a molar ratio of (1-3):(2-4). The removal rate of H2S reaches more than 98%, and the removal rate of organic sulfur reaches 70%-75%. The application expands the application range of N-methyl diethanolamine as a main agent, and can be used for refining and removing hydrogen sulfide and organic sulfur in the acidic gas in the natural gas, coal chemical industry and petroleum chemical industry process. The preparation process of the composite desulfurizer is simple, the cost is low, the environmental pollution is small, and the application effect is outstanding.

The application belongs to the technical field of biological fermentation, and relates to a bacillus licheniformis SXZY-02 and application thereof, and comprises the following steps: a bacillus licheniformis (Bacillus licheniformis) SXZY-02 is separated from the surface of tobacco leaves, Lysinibacillus macroides ) and the strain preservation number is CCTCC NO:M 2025152; the bacillus licheniformis SXZY-02 is fermented to obtain a biological agent containing the bacillus licheniformis SXZY-02, and after fermentation optimization, the lipase activity is 8.99 U / mL; the biological agent containing the bacillus licheniformis SXZY-02 is applied to tobacco shred fermentation, fat is decomposed into free fatty acid, tobacco aroma quality and alcohol degree are effectively improved, and irritation is reduced. The technology provides a green and environment-friendly solution for tobacco quality upgrading, and meets the high-quality development direction of the industry.

The utility model relates to an adjustable seeding unit mounting device of a drill seeder, and belongs to the field of drill seeders. Comprising an upper connecting arm mechanism, a lower connecting arm mechanism, a clamping mechanism, at least one fixing mechanism and at least one traction mechanism, the upper connecting arm mechanism and the lower connecting arm mechanism are respectively fixed at the top end and the bottom end of the clamping mechanism and are respectively connected with an upper rod and a lower rod of the seeding single body, the fixing mechanism detachably penetrates through one end, far away from the seeding single body, of the clamping mechanism and is detachably connected with the traction mechanism, and the traction mechanism is connected with the upper connecting arm mechanism and the lower connecting arm mechanism. A beam of the drill seeder is adaptively arranged in a space formed by the clamping mechanism and the fixing mechanism. According to the utility model, the seeding unit and the whole machine can be firmly and firmly connected, and the position of the seeding unit on the whole machine can be adjusted in the operation process of the drill seeder.

The present invention relates to a method and system for predicting risks in mine scheduling based on prediction of personnel and vehicle trajectories, comprising: an information collection unit, a communication unit, a storage unit, a risk prediction unit and an analysis and presentation unit; the information collection unit effectively collects and processes the hazardous source information in the process of personnel and vehicle scheduling and stores it in the storage unit, and transmits the data signal to the risk prediction unit through the communication unit; the risk prediction unit performs data mining analysis, algorithm operation analysis and comprehensive prediction analysis on the collected information using a risk prediction model constructed by a risk prediction index system, and draws a risk prediction conclusion, which is finally sent to the analysis and presentation unit through the communication unit for comprehensive visual early warning presentation of the prediction result. The present invention can improve production efficiency, reduce costs, and enhance safety and environmental benefits by predicting the trajectories of personnel and vehicles in production scheduling, combining task allocation and real-time data monitoring.

The present invention discloses an automatic control method for a roller press and a ball mill combined grinding system, which mainly includes automatic control when the amount of fine powder in the pre-grinding system increases, when the temperature of the cement discharged from the mill is high, and when the specific surface area of ​​the finished product is unqualified when the working condition is saturated grinding, and then reaches the control conditions required for the normal working condition. The present invention solves the technical problems of the prior art in that automation is not achieved, the quality and efficiency are poor, and the cost is high through the automatic control method for a roller press and a ball mill combined grinding system.

The invention discloses an acoustic logging instrument which comprises an acoustic emission acoustic system used for emitting mode waves with different energy levels and different focusing mode combinations to a stratum; the emission acquisition control circuit is used for determining a current emission mode and generating an emission control signal and an energy supply combination mode which are matched with the current emission mode, so that emission energy is provided for the sound wave emission system according to the energy supply combination mode, and the emission control signal is utilized to excite a specified transducer in the sound wave emission system; the sound wave receiving sound system is used for receiving sound wave signals from different directions; and the receiving and collecting control circuit is used for generating acoustic logging data according to the acoustic signals. According to the invention, the precision and accuracy of acoustic logging and acoustic long-distance three-dimensional detection are improved.

The invention relates to the field of tower-type photo-thermal systems, and discloses a mirror field distribution control method for a segmented tower-type photo-thermal system, which comprises the following steps of: separately arranging an evaporation section tube panel and an overheating section tube panel of a heat absorber of the tower-type photo-thermal system, and calculating a theoretical power distribution ratio of the overheating section tube panel to the evaporation section tube panel; calculating the initial number of heliostats distributed to the overheating section tube panel according to the theoretical power distribution ratio; the sun position is given, and the optical efficiency of each heliostat is calculated; iterative calculation is carried out to obtain the final number of heliostats distributed to the tube panel of the overheating section; and the target point of each heliostat is optimized, and when the position of the sun changes, heliostat distribution is carried out again. According to the method disclosed by the invention, the influence of light spot overflow on the overheating section tube panel is avoided, the control difficulty of the mirror field projection energy flow is reduced, and the overall optical efficiency can be obviously improved.