55 results about "Relative yield" patented technology

The invention relates to high-quality wheat germ oil and a subcritical preparation method thereof, belonging to the field of grain deep processing. The preparation method comprises the steps of implementing enzyme deactivation treatment to wheat germ through microwave, and carrying out subcritical butane extraction, molecular distillation and purification, and decoloring process. The preparation method, which obtains wheat germ oil through subcritical butane extraction, greatly reduces equipment manufacturing cost, and is low in operation cost, relatively short in production cycle, high in relative yield, and low in solvent consumption and energy consumption in a process; the preparation method is strong in operability, environment-friendly, free from pollution and good in safety and repeatability, and can realize mass continuous industrial production. The operation process is performed in an anhydrous environment, and can reduce an oxidation phenomenon of wheat germ oil during processing and guarantee stable nature of the prepared product; the prepared wheat germ oil contains 70-90% of unsaturated fatty acid and more than 90% of vitamin E retention rate.

The invention relates to a farmland test method of the grading index of a soil nutrient. The method comprises the following steps that: (a) a farmland with a low nutrient content is selected or one-season to two-season plants are planted in the farmland without applying the nutrient fertilizer to consume the nutrient to the lowest content level; (b) the farmland is randomly divided into different treatment plots, and different application rates of the nutrient fertilizer are set to adjust the nutrient in soil of each treatment plot to different levels; (c) after the fertilizer is decomposed and transformed in the soil of each treatment plot, the content of the nutrient in the soil of each treatment plot is determined; (d) a farmland test is conducted to obtain the yield and the relative yield of each treatment plot; and (e) a regression equation between the nutrient in the soil and the relative yield of the crop is established, and the corresponding grading index of the soil nutrient is calculated according to a relative yield method. The method provided by the invention is simple and feasible, the regional soil nutrient grading index can be established within a short period, and a lot of manpower and material resources can be saved.

A novel method for synthesizing AEI zeolites is provided which results in high overall relative yields on silica and the structure directing agent.

The invention discloses a red paddy soil fertility evaluation method with relative yield considered. The method comprises the following steps: (1) main indicators for paddy soil fertility quality evaluation are defined and classified, and 13 evaluation indicators are divided to five classes; (2) a calculation method is defined: a, membership is calculated, b, the weight coefficient of each singlefertility quality indicator is calculated, and c, a comprehensive fertility indicator is calculated; and (3) result accuracy is defined. According to the evaluation method with relative yield considered provided in the invention, the contradiction between a soil fertility level and rice yield performance when the traditional FUZZY method is used to evaluate the soil fertility can be solved, for example, a high soil fertility indicator is acquired by FUZZY, however, due to unreasonable management, the rice yield is low, or, a low soil fertility indicator is acquired by FUZZY, however, due to anenhanced management level, the rice yield is high. Compared with the FUZZY method, the method with the yield considered is more credible, accurate and subjective, and the application prospect is wide.

The invention provides a crop disaster loss rapid assessment method, which is based on a crop model of a DSSAT system and a GLUE parameter estimation tool, utilizes historical data of crops in a disaster area, obtains leaf area indexes and yields of the crops under various scenes based on crop model simulation, and further constructs a regression equation. And then based on a satellite image of Google Enth (GEE), substituting the leaf area index of each pixel on the satellite image into a linear regression equation to obtain the yield of each pixel. And finally, comparing the yield of the disaster year of the disaster area with the yield of the last year to obtain the relative yield loss. According to the method, a large amount of ground observation data is not needed, only a small amountof experimental data is needed for calibration, the evaluation efficiency is improved, the time cost of disaster loss evaluation is reduced, and a guarantee is provided for disaster prevention and reduction. According to the method, quantitative assessment of disaster loss is achieved, the yield reduction rates of different spatial scales can be reliably estimated, and the quality of disaster assessment is improved.

The invention belongs to the technical field of soil fertilizers, and discloses a recommended fertilizer applying method for purple paddy soil based on yield response and agronomic efficiency. The method comprises the following steps of S1, respectively calculating membership values of organic substances, total nitrogen, alkali-hydrolyzale nitrogen, effective phosphorus and rapidly available potassium by utilizing a semi-trapezoid membership function, calculating the membership value of pH (potential of hydrogen) value according to a trapezoidal membership function, determining a weight coefficient of each evaluation index based on a correlation coefficient analysis method, and calculating a comprehensive index value of soil fertility by adopting an index pulsing method according to the weight coefficient of each evaluation index and the corresponding membership value; S2, establishing a function model of the comprehensive index value of the soil fertility and the relative yield of rice, and establishing a function model of rice target yield and nitrogen fertilizer yield response; and S3, according to the recommending amount of a nitrogen fertilizer, the recommending amount of a phosphorus fertilizer and the recommending amount of a potassium fertilizer, determining ratios of a base fertilizer and an additional fertilizer. The method disclosed by the invention has the beneficial effects that the method is reliable, and the accuracy is relatively high.

The invention discloses a method for calibrating a ranking index of soil nutrients, which belongs to the field of agricultural science and technology. The method comprises the following steps: obtaining a preliminarily sketched ranking index of the soil nutrients; selecting representative farmland test points to perform farmland fertilization experiments; calculating the yield and the fractional yield of each farmland test point; comparing whether the rank of the soil nutrient content of each test point is consistent with the rank of the sketched soil nutrient according to a fractional yield method, if not, calibrating a ranking critical value between the two ranks related to the inconsistency; and calculating the ranking critical value after the calibration on the dividing basis that the farmland nutrient content data are adjacent to each other, the relative yield belongs to an adjacent ranking index, while the farmland test points of the two ranks which are inconsistent with the rank of the preliminarily sketched ranking index of the soil nutrients are used as calculating objects. The method can be applied to calibrating an existing ranking index of the soil nutrients, or combining with the formulation of a new index to obtain a new ranking index of the soil nutrients with a practical value.

The invention relates to a method for extracting a coenzyme Q10 from fermentation mycelia. The method comprises the following steps: filtrating and drying coenzyme Q10 fermented liquid so as to obtain mycelia, granulating the mycelia into 10-120-mesh granules, putting the granules into an extracting tank, carrying out subcritical extraction on the bacteria by taking subcritical fluid as an extraction solvent, then filtering so as to obtain extraction liquid and fungi residues, feeding the extraction liquid into an evaporation system, desolventizing the extraction liquid under a reduced pressure condition so as to obtain an coenzyme Q10 extract, and carrying out subsequent purification treatment on the coenzyme Q10 extract so as to obtain an coenzyme Q10 finished product. Because the subcritical fluid is adopted for extracting coenzymes Q10, the method disclosed by the invention is high in extraction yield, low in solvent loss, good in quality of products, low in operation cost, relatively short in production cycle, and large in relative yield, therefore, the method is a high-efficiency, low-consumption, environment-friendly and clean production technology of coenzymes Q10.

The invention discloses an intelligent energy-saving device of a pumping unit. The energy-saving device comprises a signal receiving module, a main control module, a signal analysis module and an upper computer, wherein the signal receiving module is connected with the main control module, and the main control module is connected with the signal analysis module and the upper computer. The energy-saving device provided by the invention has the following advantages that: 1, a sensor monitoring technology is applied, the load change of the pumping unit is accurately perceived, and a control mode is optimized to adjust the open-stop time and operating voltage of an alternating current motor along with a load change trend; 2, electric energy waste of the pumping unit caused by empty fishing or pump cavitation is reduced, and the electricity saving ratio achieves 30%-80%; 3, fault is monitored in time, fault occurrence rate is reduced, and the relative yield of an oil well is effectively improved; 4, no-load operation is avoided, parts abrasion is reduced, and plant maintenance cost is reduced; and 5, a data acquisition and memory function, network and communication as well as remote control telemetry function are realized, the device can be adjusted in real time according to the specific running state, the operation is simple, and intellectualization degree is high.

The invention relates to a comprehensive evaluation method for effectiveness of compact low-permeability reservoir fractures. The method comprises the steps that single-factor indexes corresponding to effectiveness factors of the fractures are calculated, and effective indexes of the factures are calculated on this basis. The quantitative evaluation method for the effectiveness of the compact low-permeability reservoir fractures on the basis of a fracture effectiveness index method is provided according to main influence factors of the effectiveness of the natural fractures; by means of the method, the effectiveness of the natural fractures in different directions in a compact low-permeability reservoir and the total fracture effectiveness are quantitatively evaluated, the relative yield of natural gas is further predicted, the method can be widely applied to quantitative evaluation and prediction of the fracture effectiveness of compact low-permeability oil and gas reservoirs and other unconventional oil and gas reservoirs in China, and a technical support and a geological basis are provided for exploration and development of the compact low-permeability oil and gas reservoirs and other unconventional oil and gas reservoirs in China.

The invention discloses a method for establishing a maize soil nutrient abundance and shortage index system based on an altitude division, comprising the following steps: S1, zoning an altitude elevation zone of an experimental area; S2: Classifying the soil types in the elevation zone; S3, selecting farmland blocks for setting experimental areas according to the divided soil types; S4, measuringthe available nutrients of the soil in the experimental area to obtain the measured values of the soil nutrients of each field; S5, taking relative yield as dependent variable and extracting test value of soil available nutrient as independent variable to carry out regression analysis, and obtaining regression function of soil test value and relative yield; 6, grading that relative yield by adopting a five-grade classification standard, and determining a soil nutrient abundance and deficiency index; S7: Determining the corresponding fertilizer application amount according to the classification. The method simplifies the analysis process of the environmental factors by dividing the elevation zone of the region, and ensures the rationality of the maize soil nutrient abundance and shortage index system established in the region with large elevation difference.

The invention provides a method and device for determining stratum mineral content. The method comprises the following steps: acquiring a hybrid Gamma-ray spectra produced by the nuclear reaction of multi-elements in a to-be-detected stratum with fast neutrons; decomposing the hybrid Gamma-ray spectra to obtain relative yield of each element in the multi-elements in the to-be-detected stratum; computing to obtain the content of each stratum mineral in multiple stratum minerals in the to-be-detected stratum according to the relative yield of the element and a preset quantitative relation, wherein the quantitative relation is the quantitative relation between the relative yield of single element and the content of the stratum mineral containing the single element. The quantitative relation between the relative yield of single element and the content of the stratum mineral containing the single element is established by the method in the embodiment of the invention, thereby directly computing the contents of different stratum minerals in the to-be-detected stratum through the relative yield of the element, the computing precision of the stratum mineral content is effectively improved, and the accuracy of the computation result of the stratum mineral content is guaranteed.

A method for predict crop yield comprehensively considering wat and salt stress The invention relates to the technical field of agricultural water and soil engineering, which is used for predicting the actual yield of a certain kind of crop. The method comprises the following steps: obtaining the water absorption distribution of the root system and the transpiration evapotranspiration of the aboveground part in each day of the growth period of the crop in the farmland to be predicted; Gets the minimum soil water potential corresponding to the category, maximum soil water potential, the value of stress compensation coefficient and relative yield coefficient, the predicted total stress index in the farmland to be predicted is obtained, Then, the predicted relative yield ratio of crops in thefarmland to be predicted is obtained, and the predicted actual yield of crops in the farmland to be predicted is obtained by multiplying the ideal yield ratio and the predicted relative yield ratio,so as to uniformly consider the effects of three kinds of stresses on crop yield, so that the precision of crop yield prediction is improved and the complexity of crop yield prediction is reduced.

The invention discloses a preparation method of mestanolone. The structural formula of the mestanolone is as shown in the specification. The specific preparation method comprises the following steps of (1) generating a compound II with cyan from a compound I and acetone cyanohydrin or sodium cyanide; (2) adjusting a solution of the compound II into acidity, tracking ethylene glycol and triethyl orthoformate into ketal, adjusting the solution into strong basicity to form a compound III; (3) adding a catalyst and hydrogen to the solution of the compound III to generate a compound IV; (4) putting the compound IV into a container and dissolving by using tetrahydrofuran, dropping a Grignard reagent of methylmagnesium chloride or methyl magnesium bromide to obtain a compound V; and (5) elutriating the compound V in the same container under an acid condition to obtain 3-ketal, namely mestanolone. Chemical production of the mestanolone is achieved by adopting the simplest process, the required raw materials are few, the pollutants are few, meanwhile, the produced mestanolone is high in purity and the relative yield is increased.

The invention discloses an analysis method of an interaction influence among multi-inverter grid-connected control channels. The method is characterized by through establishing a multi-inverter grid-connected structure model and calculating a relative yield value of an input quantity and an output quantity pieces, acquiring a relative gain matrix; through the relative yield value, analyzing whether an interaction influence exists among the different control channels; introducing an NI index to measure an interaction influence degree; and according to a positive or negative sign, determining stability and integrity of a system. In the invention, a relative gain matrix RGA based on a frequency is used to quantitatively analyze a size of an interaction effect of control channels when multiple inverters are in a grid-connected state; a low-frequency stage interaction influence presents a forceful negative interaction effect along with changes of a grid-connected number, a control parameter and a power grid equivalence impedance, and a high-frequency stage interaction influence is a positive interaction influence, which is generally helpful for restraining a corresponding frequency harmonic wave; through the introduction of the NI index, the interaction influence is analyzed and simultaneously stability of a grid-connected system is determined; and the method possesses high accuracy and practicality.

The invention provides an inelastic scattering gamma-ray spectrometry analysis method and device. The method comprises the steps as follows: inelastic mixed spectrum and capture spectrum are measuredin a neutron pulse cycle and subjected to normalization processing; the normalized capture spectrum is added to an element first inelastic standard spectrum matrix obtained in advance, and an elementsecond standard spectrum matrix corresponding to the capture spectrum is obtained; the inelastic mixed spectrum is analyzed through the element second standard spectrum matrix, and contribution ratesof elements and the normalized capture spectrum for the inelastic mixed spectrum are obtained; the contribution rates of all the elements for the inelastic mixed spectrum are normalized, and inelasticspectrum relative yields of all the elements are obtained. Pure inelastic spectrum is not required to be obtained firstly during measurement of inelastic spectrum relative yields of all the elements,so that the defect of inaccurate underground stratum oil saturation due to defects of a fixed pure spectrum coefficient method which is mainly adopted at present can be overcome.

The invention discloses a device and a method for improving the anaerobic methanogenesis of kitchen garbage, and mainly relates to the technical field of the treatment of organic solid waste. According to the method, through throwing green and environment-friendly chelated iron citrate into an anaerobic bottle for the kitchen garbage to carry out an anaerobic digestion reaction, the yield of a biogenic gas produced by the reaction is improved by a wide margin; moreover, the corresponding rate and relative content of methane are also increased. In addition, the device for improving the anaerobic methanogenesis of the kitchen garbage is designed in a matching manner based on the method for improving the anaerobic methanogenesis of the kitchen garbage, is simple in structure and convenient and reliable to use, and can be used for guaranteeing that the anaerobic digestion reaction is normally carried out; therefore, the device and the method for improving the anaerobic methanogenesis of the kitchen garbage can be used for effectively improving the yield of the biogenic gas and the relative yield productive rate of the methane; the resource utilization of the kitchen garbage is realizedand moreover, the device and the method also have the advantages of energy-saving and environment-friendly and therefore have important popularization and application value.

The invention discloses a forest soil nutrient classification method. The method comprises the following steps: (1) setting a soil sampling point position, and collecting and detecting the content of soil nutrient; (2) interpolating the content value of the soil nutrient in the region, thereby obtaining a soil nutrient distribution diagram; (3) collecting the annual average increment data of a certain fast-growing forest tree in the quartel (small class) in recent two years in the region; (4) counting the small-class average soil nutrient average value, and taking the points with high nutrient content as a total nutrient fertilization region; and (5) by taking the annual average increment of the forest tree as the yield in each region, calculating the nutritional deficiency relative growth increment, establishing a regression equation between the nutrient of the soil and the relative growth increment of the forest tree, and calculating the nutrient classification index of the corresponding soil according to a relative yield method. The method disclosed by the invention is simple and feasible, the regional soil nutrient classification indexes can be established in a few years, and the test cost and manpower and material resources are saved.

The invention discloses a method for extracting methylnaphthalene in C10 aromatics. The concrete process comprises charging the raw material C10 aromatics by employing a continuous intermediate charging manner, and starting to heat when the liquid level reaches the 1/3 position; controlling the tower top D-1 temperature to be 203.5-206.1 DEG C, the side-stream D-2 temperature to be 221.5-223.6 DEG C, the side-stream D-3 temperature to be 244.7-246.5 DEG C, and the tower kettle D-4 temperature to be 252.5-256.6 DEG C; after separation, obtaining light C10 compositions at the tower top, obtaining a durene and naphthalene enriched solution at the side-stream D-2, obtaining a methylnaphthalene enriched solution at the side-stream D-3, and obtaining heavy C10 compositions at the tower kettle D-4; and condensing and crystallizing the side-stream D-3 composition, so as to obtain methylnaphthalene. The method is short in period, simple in operation, low in energy consumption and high in relative yield. Under the conditions that the continuous side-stream rectifying tower temperature, the charging/discharging rate and the reflux ratio are determinate, the methylnaphthalene content in the methylnaphthalene enriched solution can be improved to 88 wt% or more at one time, the yield reaches 86% or more, and after continuous crystallization, the methylnaphthalene crystal purity is 96% or more, and the yield is 86% or more.

A novel method for synthesizing AEI zeolites is provided which results in high relative yields of AEI based on the weight of the reaction mixture and on the structure directing agent. The method alsoprovides for the reduced use of water in the reaction mixture.

The invention discloses a method for identifying the drought resistance of sweet potatoes in a field, and belongs to the technical field of identification of the drought resistance of the sweet potatoes. The method comprises the following steps: scissoring 25-30cm healthy sweet potato seedlings to be identified, inserting into ridges with drip irrigation facilities, and after inserting, watering once through drip irrigation; after inserting, watering control materials once on the 15th day, 30th day, 45th day, 60th day, 85th day and 110th day respectively, while not watering drought resistance identification materials on the 30th day, but watering normally at the other time, controlling the watering amount to be 40m<3>/ 667m<2> each time, investigating the yield of underground sweet potato tubers in the harvesting process on the 130th day, calculating the relative yield, and judging the drought resistance of sweet potato varieties according to the relative yield (varieties with the relative yield being higher than or equal to 60% have strong drought resistance, varieties with the relative yield being higher than or equal to 50%, but lower than 60% have medium drought resistance, and varieties with the relative yield being lower than 50% have poor drought resistance). The method is easy to operate, practical and high in efficiency; and the drought-resistant materials identified by the method can be directly applied to sweet potato production.

The invention provides an orchard soil fertility characterization method and an orchard soil fertility characterization system. The orchard soil fertility characterization method comprises the following steps: determining a weight coefficient of each soil fertility characterization index of each layer of soil sample by adopting a principal component analysis method; determining the membership degree of each soil fertility characterization index of each layer of soil sample of each orchard object by adopting a Tilfil method; calculating a soil fertility index according to the weight coefficientand the membership degree; determining an index index of the fruit tree relative yield; calculating to obtain the weight of each soil evaluation index; and obtaining a comprehensive index value of the soil fertility of any orchard object. The method has the advantages that the correlation with orchard productivity is better. The method has very important significance for guiding orchard soil fertility management and cultivation management. The fertilizer utilization efficiency can be effectively improved. The orchard yield is increased. The soil environment is improved. The purposes of reducing application of orchard chemical fertilizer, improving quality and improving efficiency are achieved.

The invention discloses a method for predicting crop yield based on waterlogging stress, and relates to the technical field of agricultural production. The method comprises the steps of determining all constants in a moisture production function of crops based on actual production data; calculating an initial waterlogging stress parameter of the crop based on a calculation formula of the initialwaterlogging stress parameter in the moisture production function of the crop and the current field water depth; calculating effective waterlogging stress parameters of the crops based on a calculation formula of the effective waterlogging stress parameters in the moisture production function of the crops and the initial waterlogging stress parameters; and predicting the yield of the crops based on a calculation formula of the relative yield in the moisture production function of the crops and the effective waterlogging stress parameters. The stress influence of waterlogging on crop growth isuniformly represented, so that the prediction precision of the crop yield is improved.

The invention discloses a method for determining a dry crop nitrogen input environment threshold based on a regional scale. The method comprises the following steps: determining a nitrogen application rate under a highest relative yield within a region, primarily determining the dry crop nitrogen input environment threshold based on the regional scale, evaluating a regional yield risk and an environmental risk of the primarily determined nitrogen input environment threshold, and finally determining the dry crop nitrogen input environment threshold based on the regional scale. The method disclosed by the invention is used for determining the nitrogen application rate corresponding to the highest relative yield with the nitrogen input environment threshold based on the regional scale of 98%. The nitrogen input environment threshold determined by the method disclosed by the invention is obtained based on the historical data of the regional scale and current experimental data of a regional scale soil type, the method has wide regional adaptability and feasibility, the yield risk and the environmental risk are evaluated by test points, and the dry crop nitrogen input environment threshold is finally determined, so that the implementation effect is safe and reliable. A high crop yield can be maintained, and the environmental pollution risk caused by excessive nitrogen fertilizer application can be effectively and greatly reduced.