78results about How to "Fill in research gaps" patented technology

The invention relates to a method for in vitro incubation of fertilized eggs of macrobrachium nipponense, which is characterized in that the method comprises the steps of selection of parent shrimps, mating and oviposition, treatment of incubation water, egg stripping, egg washing, incubation, daily management and the like. The method for the in vitro incubation of the fertilized eggs of the macrobrachium nipponense solves the problem of biological characteristics that the fertilized eggs depend on parent bodies to be incubated, lays a foundation for genetic operations of the macrobrachium nipponense such as gene transfer, nuclear transplantation and the like, fills the research gap of the field, and has important practical application value.

The invention belongs to the technical field of geotechnical engineering, and particularly relates to an unsaturated garbage soil bidirectional gas permeability coefficient determinator which determines gas permeability coefficients of garbage soil in the horizontal direction and the vertical direction by using a normal atmospheric pressure permeability test method. The unsaturated garbage soil bidirectional gas permeability coefficient determinator comprises an instrument base, a pressurizing system, an instrument box, a gas guide system and a measuring system, wherein the instrument base is a bottom supporting system of the whole determinator; the instrument box is used for filling a sample; the pressurizing system is used for compacting the sample in a layered manner; the gas guide system provides stable gas flow with certain gas pressure; the measuring system is used for determining gas pressure and flow, and the gas permeability coefficients of the sample are obtained through the Darcy law. Porous plates in the up-down direction (or the left-right direction) of the instrument box can be sealed as needed, so that the permeability coefficients of the same sample in the horizontal direction (or the vertical direction) are determined, and then the anisotropy coefficients of the permeability coefficients of the sample are obtained. A measured object of the determinator not only can be the garbage soil, but also can be a common soil sample, polluted soil and the like.

The invention relates to a three-dimension picture electrocardiograph, and relative application, wherein it has 16 electrode lines parallel input 5 channels Einthoven-Goldberger-Wilson and Frank guide system; the Frank electrocardiograph collects electrocardiograph signal to be treated by computer, computer assist design, to realize multi-dimension, synchronous, and real-time conversation; storing at 24h, synchronizing 1-78 guides or selectively washing electrocardiograph; generating database, 12 electrocardiographs, orthogonal electrocardiograph, vector electrocardiograph, etc.

A method for obtaining routing inspection in-place data of a city pipe network is favorable for improving the data accuracy of the routing inspection in-place rate of the city pipe network, thereby more accurately reflecting the routing inspection work quality and more objectively carrying out routing inspection in-place assessment on the whole pipe network. The method is characterized by including the following steps that a pipeline routing inspection area is determined according to the pipeline map of the city pipe network; mesh division is carried out on the routing inspection area, and a mesh matrix overlapped above the routing inspection area is obtained; an area covered by routing inspection is determined according to the meshes passed by the routing inspection track; the number of the meshes occupied by a certain pipeline in the area covered by routing inspection is determined, and the number is recorded as the length of the routing inspection in-place pipeline; the number of the meshes occupied the certain pipeline in the mesh matrix is determined, and the number is recorded as the total length of the pipeline in the routing inspection area; the routing inspection in-place rate is obtained by dividing the total length of the pipeline by the length of the routing inspection in-place pipeline.

The invention discloses a construction method for an electromechanical transient simulation model of a gas-fired reciprocating power generating set. The power generating set comprises a reciprocatinginternal combustion engine (a prime mover) and a synchronous linear alternating-current generator, wherein the reciprocating internal combustion engine is composed of a gas-fired engine and a reciprocating compressor. The construction method comprises the steps that firstly, the stator resistance, the rated voltage, the rated capacity and other associated original parameters of the gas-fired reciprocating power generating set are obtained to be used for the subsequent modeling calculation; secondly, model assumption is conducted, and the referential positive directions of all the physical parameters are selected; thirdly, flux-linkage equations of a three-phase stator winding and an exciting winding of the gas-fired reciprocating power generating set, the voltage balance equation of the three-phase stator winding and the motion equation of a rotor are derived so as to form the electromechanical transient simulation model of the gas-fired reciprocating power generating set. By means ofthe construction method, the gaps in an existing research on a mathematic transient simulation model of the gas-fired reciprocating power generating set are filled in, and a better research on a control system of the gas-fired reciprocating power generating set and the running characteristics is facilitated.

The invention discloses a typicality-based big comment data mining method. The method comprises the steps of conducting comment typicality mining modeling, and conducting modeling and formalized definition on comment typicality calculation and the minimum representative comment set mining problem; (2) automatically constructing a typicality comment prototype; (3) conducting minimum comment set mining, and adopting the minimum comment set mining algorithm for screening out one minimum comment set; (4) adopting the BigSimSet parallel computing method, and calling computing nodes in a distributed cluster for processing a similarity comment detection task in a parallel mode. According to the typicality-based big comment data mining method, on the two viewpoints of the cognitive psychology and the viewpoint mining, the user comment typicality balance method is studied, and the minimum comment set with the representativeness is mined on the basis of the method, so that a potential commodity client is helped to know a certain commodity more comprehensively at multiple angles, the user is helped to screen out the needed commodity more accurately, and the user purchase experience is improved.

The invention discloses a classification mechanism analysis method for finely generalizing the channel engineering ecological environment influence and belongs to the technical field of ecological environment influence evaluation. A set of generalized models are adopted to classify and analyze the ecological environment influence action mechanism of bank protection, bottom protection, dredging andbeach cutting, spur dike and submerged dike projects in construction and operation, analyze an action mechanism and an interference path of the influence of the channel operation period on the ecological environment, and identify the channel engineering construction and operation superposed to accumulate action factors of ecological environment influence, the key effects of representative engineering influence prevention and countermeasures alleviation are developed, a channel engineering ecological environment influence mechanism analysis method and process based on ecological habits and egglaying characteristics are established, a scientific, systematic, comprehensive, effective, fine and generalized mechanism analysis method support is provided for comprehensively, completely, finelyand deeply analyzing a channel engineering ecological environment influence mechanism, proper countermeasure measures for preventing and alleviating adverse effects are further derived, the design andplanning of ecological waterway are carried out, and the scientific, systematic, comprehensive, effective and precise mechanism analysis method support are provided.

The invention relates to a preparation method for electronic-grade n-propyl propionate. The method comprises the following steps: performing a reaction on propionic acid and n-propanol to form crude n-propyl propionate under the catalysis of [HNMP]PTSA, performing reduced-pressure rectification, performing ion exchange resin adsorption impurity removal, and performing sub-boiling distillation to obtain the electronic-grade n-propyl propionate with a content of >= 99.99% and a metal ion content of less than 1 ppb, wherein the electronic-grade n-propyl propionate can be used as an electrolyte solvent in the lithium battery industry. According to the method provided by the invention, the catalyst used in the method has a high catalytic esterification rate, and the method adopts conventional purification equipment, has high product purity, is convenient to operate, and can realize industrialized production.

The invention relates to a soil grasper measuring device for measuring the real displacement of soil sheared by a large size soil engineering direct shear apparatus. The device is composed of a low shearing box base plate, a lower shearing box soil-bearing support, a lower shearing box lateral limit frame, a high strength spring set, a soil grasper, a high strength steel wire, and a steel wire steering gear. The lower shearing box soil-bearing support is fixed on the low shearing box base plate; the high strength spring set is arranged on the periphery of the lower shearing box soil-bearing support; the lower shearing box lateral limit frame and the lower shearing box soil-bearing support are nested with each other to form a rectangular semi-opened space for containing tested soil; a steering gear support and a displacement sensor support are both fixed on the base plate; the steel wire steering gear is fixed on the upper end of the steering gear support, a displacement sensor is arranged on the upper end of the displacement sensor support; the high strength steel wire bypasses the steel wire steering gear, is connected to two ends of the displacement sensor, and is tensed to form an enclosed loop; and the soil grasper is welded to the high strength steel wire. The provided device can measure the real displacement of soil in a shearing box in the soil engineering direct shear tests, the shortage that a shear box is used to replace soil displacement is overcome, the measurement precision is improved, and the blank of soil engineering direct shear test research is filled.

The invention discloses chromium resistant paenarthrobacter nicotinovorans M23A and an application thereof, and relates to paenarthrobacter nicotinovorans. The paenarthrobacter nicotinovorans is preserved in the China Center for Type Culture Collection on 27 November 2018, the address is Wuhan University, Wuhan, China, the postcode is 430072, and the preservation number in the preservation centeris CCTCC NO:M 2018833. The invention relates to an application of the paenarthrobacter nicotinovorans for governing petroleum hydrocarbon pollution of soil. The separation and the application of the paenarthrobacter nicotinovorans (Paenarthrobacter nicotinovorans) M23A further enrich strain resources in the field, the research blank in the respect is effectively filled, a feasible scheme is provided for practice work of governing mixed petroleum hydrocarbon pollution environment, and enormous research value and application prospect are displayed.

A reservoir flood season sediment optimal scheduling method under cascade reservoir joint scheduling comprises the following steps: 1, in a flood season, forecasting flow and sediment content data ofeach hydrological station in the next few days; 2, judging whether a phenomenon that a sand peak lags behind a flood peak exists in the flood process of the terminal reservoir area and whether a sandpeak scheduling starting condition is met or not, and if yes, starting flood season sand peak scheduling; 3, entering a flood blocking and peak clipping period; 4, entering a reservoir area sand pulling period; 5, entering a dam front sand discharging stage; and 6, ending flood season sediment peak scheduling, so as to finish reservoir flood season sediment optimal scheduling under cascade reservoir combined scheduling. The invention provides a reservoir flood season sediment optimal scheduling method under cascade reservoir combined scheduling. Starting from sediment movement rules and reservoir scheduling technology optimization, based on combined scheduling of a plurality of reservoirs from the upstream to the downstream of a river or a river reach, tail-end reservoirs perform centralized sediment discharge in a flood season, and technical support is provided for solving the problem of sediment deposition of the tail-end reservoirs.

The invention provides a platinum-nickel-iridium ternary ordered octahedral body and a synthetic method thereof, and relates to the field of materials. The particles of the platinum-nickel-iridium ternary ordered octahedral body are of a nano structure, moreover, the platinum is mainly distributed in the central region of the interior of each particle, the nickel is mainly distributed in eight face regions of the octahedral body, and the iridium is mainly distributed in an edge region and an angle region; the synthesis method comprises the following steps that 5-50 mL of oleylamine and 0-10 mLof oleic acid are correspondingly weighed, the oleylamine and the oleic acid are put into a reactor to obtain a mixed solution; 1-5 mg of platinum acetylacetone (II), 20-100 mg of nickel acetylacetonate (II), 5-10 mg of iridium acetylacetone (III) are weighed correspondingly and put into the mixed solution, and dissolving and stirring uniformly are carried out; a reaction kettle is vacuumized tobe a vacuum state and degassing is carried out; and then carbon monoxide gas is introduced, the reaction temperature and the reaction time are controlled, and a black powdery product is obtained afterthe reaction is finished. The invention provides the platinum-nickel-iridium ternary ordered octahedral and the synthetic method thereof, and the conditions that an appearance, a crystal form and theelement distribution of the octahedral body are further analyzed.

The invention discloses vinegar mainly prepared from cantaloupe juice and a preparation method of the vinegar. The preparation method comprises the following steps: soaking broomcorn millet in warm water for 12 hours, taking out the soaked broomcorn millet, mixing the soaked broomcorn millet with malt, steaming the mixture in a food steamer for 2-3 hours, placing the steamed mixture in a fermentation tank when the steamed mixture is naturally cooled to be about 50 DEG C, adding glucoamylase, at the same time adding radix angelicae dahuricae, amomum tsao-ko, Chinese cinnamon, fructus anisi stellati, fructus foeniculi and syzygium aromaticum, fermenting at the room temperature of 25-30 DEG C, turning over and mixing twice every day, adding cantaloupe juice after 4 days when a good deal of wine flavor is emitted from the fermented material, at the same time adding vinegar koji, continuously stirring, capping the fermentation tank for sealing after 3 days when a vinegar flavor is emitted from the fermented material, leaving to stand for fermentation for 1 month at the room temperature of 15-25 DEG C, filtering, bottling, and sterilizing, so as to obtain the finished product. The vinegar product is rich in nutriments and unique in flavor, and not only fills a domestic blank of researches in this field, but also promotes progressive development of table vinegar production in China.

The invention discloses an RF MEMS electrostatic driving switch microwave characteristic analysis method based on a flexible substrate bending condition. The method comprises the steps of 1, establishing a deformation coupling model based on the double deformation of an RF MEMS electrostatic driving switch and a flexible substrate to realize the extraction of a key structural parameter variation between the RF MEMS electrostatic driving switch and the flexible substrate; and 2, based on an RF MEMS electrostatic driving switch bending characteristic model, acquiring the deformation quantity ofthe RF MEMS electrostatic driving switch/substrate double deformation. Based on the above parameters, the RF MEMS electrostatic driving switch microwave characteristic model is reconstructed to analyze the effect of bending deformation on an RF MEMS electrostatic driving switch microwave characteristic. The invention provides the RF MEMS electrostatic driving switch microwave characteristic analysis method based on a complex environment space, wherein the double deformation model of the RF MEMS electrostatic driving switch and the flexible substrate is included.

The invention discloses a method and system for measuring and evaluating plant purification efficiency by using a fumigation system. By placing the plants to be tested in a closed environment containing indoor air pollutants (static fumigation) or into a closed environment with continuous and stable concentrations of indoor air pollutants (dynamic fumigation), by measuring the pollutants and plant parameters in the fumigation process, According to the corresponding calculation formula, the amount of pollutants absorbed by leaves per unit time and unit leaf area is analyzed to characterize the purification efficiency of different plants. The present invention can effectively overcome the problem of changes in measurement and evaluation results caused by differences in individual plants, adsorption of pot soil, and changes in pollutant parameters in the fumigation process when the absorption efficiency is used to evaluate the purification efficiency of plants, especially in the case of low-concentration fumigation. The flux of indoor gas pollutants absorbed is significantly lower than that of high-concentration fumigation, and the evaluation results are more reasonable and comparable.

The invention discloses a method for preparing high fullerene and a special anode thereof. The anode is prepared according to the following method: filling a mixture of graphite and mixed polycyclic aromatic hydrocarbon into a hollow graphite rod so as to obtain the anode. In the mixture of the graphite and the mixed polycyclic aromatic hydrocarbon, the mass ratio of the graphite with the polycyclic aromatic hydrocarbon is 1:20. The method comprises the following steps: conducting arc discharging on the anode and cathode under the He atmosphere so as to obtain high fullerene which is at least one of C76, C78, C84, C86 and C90. In the invention, a certain proportion of mixed polycyclic aromatic hydrocarbon is added in the graphite, so that the yield of C76 can be improved by 2-3 times, the yield of the C78 and the C84 can be improved by about 4 times, and the yield of the C86 and the C90 is improved by a certain degree.

The invention discloses vinegar mainly made of peach juice and a making method of the vinegar. According to the method, millet is soaked with warm water for 12 hours and fished out to be mixed with malt to be steamed for 2-3 hours, then the mixture is aired to about 50 DEG C and placed into a fermentation tank, saccharifying enzyme is added, meanwhile radix angelicae, fructus tsaoko, bark of Japanese cinnamon, anise, fennel and flos caryophylli are added to the mixture at the same time, fermentation is conducted at the room temperature of 25-30 DEG C, stirring is conducted twice each day, when vinous flavour is emitted out of wine with dregs four days later, peach juice is added to the mixture, meanwhile vinegar koji is added, stirring is conducted continuously, when vinegar smell is emitted out of the wine with dregs three days later, the fermentation tank is covered and sealed, the mixture stands still at the room temperature of 15-25 DEG C and is fermented for one month, then filtering and bottling are conducted, sterilization is conducted, and a finished product is obtained. The product is rich in nutrition, unique in flavor, the research blank on the aspect in China is made up for, and development of vinegar production in China is promoted.

The invention discloses vinegar using pear juice as main material and a production method of the vinegar. The production method includes: soaking yellow rice with warm water for 12 hours, fishing out and mixing with fructus hordei germinatus, steaming in a steamer for 2-3 hours, airing to about 50 DEG C, placing into a fermentation tank, adding saccharifying enzyme, jointly adding radix angelicae, amomum tsao-ko, cinnamon, fructus anisi stellate, fennel and syzygium aromaticum at the same time, fermenting at room temperature of 25-30 DEG C, turning and stirring twice each day, adding the pear juice when mash emits a large amount of wine aroma after 4 days, adding vinegar yeast at the same time, constantly stirring, covering and sealing the fermentation tank when the mash emits vinegar aroma after 3 days, standing at room temperature of 15-25 DEG C for fermentation for a month, filtering, bottling and sterilizing to obtain the vinegar. The vinegar and the production method thereof have the advantages that the vinegar is rich in nutrition and unique in flavor, the vinegar research blank of China is filled up, and the development of vinegar production of China is promoted.