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277results about How to "Increase growth rate" patented technology

Accurate control system and method for cooperative fertilization and seeding

The invention relates to the technical field of sowing control, in particular to a precise control system and method for cooperative fertilization and sowing, and the method comprises the following steps: monitoring soil humidity distribution data of a target farmland by using a soil humidity sensor, and calculating a soil permeability coefficient based on the soil humidity distribution data in combination with a three-dimensional terrain model and a soil permeability coefficient; constructing a soil humidity gradient model by adopting a finite element analysis method; based on the soil humidity gradient model and in combination with target fertilizer characteristics, establishing a fertilizer diffusion model, simulating the diffusion range and concentration distribution of the fertilizer under the soil humidity gradient condition, and outputting the fertilizer diffusion radius and the concentration gradient distribution of the fertilizer in soil through multivariate regression analysis; and based on the fertilizer diffusion model, calculating the fertilization amount and the fertilization depth in combination with the crop demand parameters. According to the method, the soil humidity gradient model is established, and fertilizer waste and environmental pollution caused by non-uniform fertilization or excessive fertilization amount are avoided.
Owner:SHANDONG ACADEMY OF AGRICULTURAL SCIENCES

Fungicide for promoting growth of medicago sativa and application thereof

The invention provides a microbial agent for promoting growth of medicago sativa and application of the microbial agent, and relates to the technical field of agriculture, the microbial agent is prepared from sinorhizobium meliloti MCSWL1, sinorhizobium meliloti MCSD1 and nitrogen-fixing rhizobium sp. MCDC3 according to the mass ratio of 1: 1: 2, and the mass ratio of the sinorhizobium meliloti MCSWL1, the sinorhizobium meliloti MCSD1 to the nitrogen-fixing rhizobium sp. MCDC3 to the nitrogen-fixing rhizobium sp. MCDC3 to the nitrogen-fixing rhizobium sp. MCDC3 is 1: 1: 2. The microbial agent for promoting the growth of the medicago sativa, provided by the invention, can form a close symbiotic relationship with the medicago sativa (particularly grassland No.3), and provides sufficient nitrogen nutrition for the growth of the medicago sativa, so that the soil fertility is effectively improved, and the healthy growth of plants is promoted.
Owner:MENGCAO ECOLOGICAL ENVIRONMENT (GRP) CO LTD +3

Method and equipment for preparing carbon nanotubes

PendingCN119284887AQuantitative control of entry quantityDiameter adjustableMaterial nanotechnologyCarbon nanotubesPtru catalystNanotube
The invention discloses a method and equipment for rapidly and continuously preparing carbon nano tubes with adjustable tube diameters, which are used for continuously and rapidly preparing carbon nano tubes with different tube diameters and at least comprise a catalyst precursor atomizing chamber, a plasma device, a carbon nano tube preparation reactor, a collector and a tail gas treatment device. A catalyst precursor solution enters the atomizing chamber through the injection pump to be atomized, atomized mist enters the plasma treatment device and then enters a reaction from a sample inlet in the upper portion of the reactor, after the reaction in the reactor is completed for a short time, the carbon nanotubes are collected from a collecting device on the lower portion of the reactor, and tail gas can be returned to the reactor after being filtered by the filter. The tail gas can be repeatedly used; and the continuous preparation of the carbon nano tubes with different tube diameters can be realized.
Owner:QINGDAO UNIV OF SCI & TECH

Method for targeted creation of fast-growing new tilapia strain

The invention discloses a method for targeted creation of a fast-growing new tilapia strain, and belongs to the technical field of fish cultivation. The method specifically comprises the following steps: (1) taking a fragment, as shown in SEQ ID NO.1, on a third exon of a pomc gene as a gRNA target sequence; (2) designing and synthesizing a gRNA primer sequence; (3) amplifying by adopting the gRNA primer sequence and the gRNA plasmid, and then transcribing and purifying to obtain a gRNA fragment; (4) transferring the gRNA fragments into fertilized eggs of tilapia mossambica through gene editing to obtain F0-generation positive fish; and (5) hybridizing the F0-generation positive male fish with the wild-type female fish, screening out F1-generation parent fish, and culturing the F1-generation parent fish to obtain F2-generation tilapia with homozygous deletion mutation. According to the invention, the pomc homozygous knockout line is established in the Nile tilapia mossambica for the first time, the new fast-growing line is a complete gene function deletion model, the cost is lower, the efficiency is higher, and the phenotype can be stably inherited.
Owner:GERMPLASM INNOVATION GRAND SCIENCE CENTER OF WESTERN CHINA (CHONGQING) SCIENCE CITY

Feed for greater wax moths and preparation method of feed

The invention provides a greater wax moth feed and a preparation method thereof. The feed comprises 100 g of milk powder, 100 g of flour, 100 g of wheat bran, 100 g of yeast powder, 100 g of bean flour, 60 g of corn flour, 100 g of beeswax, 100 g of honey and 60 g of glycerin. The method comprises the following steps: weighing the components in proportion, and uniformly mixing. According to the method, the adaptability of greater wax moths to different foods can be evaluated by constructing a life table, and although the method is used for feeding the greater wax moths with honeycombs and artificial feed, although the method has different influences on the growth and development of the greater wax moths, the greater wax moths fed with the artificial feed show relatively good adaptability, and the method is suitable for constructing experimental stable populations of greater wax moths.
Owner:GUIYANG UNIV

Machine vision-based shrimp feeding behavior prediction and automatic feeding system and method

The invention relates to a shrimp feeding behavior prediction and automatic feeding method based on machine vision, which comprises the following steps: S1, identifying and analyzing the behaviors of shrimps: identifying the dynamic and overall behaviors of the steps of the shrimps through feature labeling and model training of the steps of the shrimps, and judging the resting, swimming and foraging behavior states of the shrimps; s2, identifying and analyzing the behavior state of the shrimps through the body labeling features, and combining with identification of residual feed in water to adjust a feeding strategy, reduce waste and reduce water treatment load; s3, the computing power center obtains real-time image frames of the underwater high-definition camera, after computing power analysis is applied, signals are sent to the feeder control center, feedback information is received, and signal linkage is achieved; and S4, video real-time monitoring and breeding data real-time display. According to the method, the training model for accurately identifying the prawn foraging behavior can be realized, the method can adapt to the complex and changeable underwater environment of the circulating water culture pond, the technical robustness is high, accurate identification can be realized, and the intelligent degree is high.
Owner:FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI

Ecological seed-carrying slurry for slope of mine dump, preparation method and application thereof

The present invention relates to the technical field of ecological concrete slurry, and specifically to an ecological seed-carrying slurry for the slope of a mine dump, a preparation method and its application. Aiming at the special environmental characteristics of the Inner Mongolia mining area, the present invention prepares a new type of artificial aggregate containing growth domains and seeds, which is composed of a three-layer structure, each layer having a specific function, so as to achieve the purpose of promoting the germination of multi-source species, plant growth, providing nutrition and improving the soil environment. The slurry can not only effectively utilize solid waste and reduce costs, but also adopts in-situ point-type layered hole sowing to shorten the vegetation restoration cycle in the ecological restoration of the slope, greatly improve the survival rate of tree and shrub seed sources, reduce the number of watering times, save restoration costs, and reduce the workload of management. While effectively promoting vegetation restoration, it strengthens the stability of the slope, prevents soil and water loss, slows down runoff and consolidates the soil, providing an efficient and sustainable solution for the ecological restoration of green mines in Inner Mongolia.
Owner:INNER MONGOLIA AGRICULTURAL UNIVERSITY

Transverse shaping growth cultivation device for glutinous Chinese yam

The invention discloses a waxy yam transverse shaping growth cultivation device, and relates to the technical field of waxy yam planting, the waxy yam transverse shaping growth cultivation device comprises a support, and further comprises a storage box; a cultivation assembly is installed on the support and used for cultivating Chinese yams and guiding the Chinese yams so that the Chinese yams can grow transversely. A nutrient solution conveying assembly is installed on the support and used for conveying a nutrient solution in the storage box into the cultivation assembly for Chinese yam growth. A seedling raising guide assembly is mounted on the bracket and is used for guiding Chinese yam seedlings and keeping the Chinese yam seedlings vertical. The waxy yam cultivation device has the advantages that waxy yams grow transversely through physical guidance and are biologically guided, so that the waxy yams automatically and transversely grow during growth, the reverse influence of physical guidance on the growth of the waxy yams is reduced, the growth of the waxy yams is promoted, in addition, the upper cultivation pipe can be automatically opened, the waxy yams in the cultivation assembly are exposed, and the cultivation efficiency is improved. And the picking efficiency of the glutinous Chinese yams is improved.
Owner:WEIXI LIRONG AGRI BIOTECHNOLOGY CO LTD

Control method for efficient culture of photosynthetic organisms

The invention relates to a control method for efficient culture of photosynthetic organisms, which realizes efficient growth of phycomycetes photosynthetic organisms by intelligently adjusting illumination and culture environment temperature. The control method for the temperature condition of the culture environment comprises the following steps: (1) monitoring the temperature in real time, regularly reading data of a temperature sensor, and transmitting the data to a central control unit; (2) setting a corresponding difference allowable threshold value according to the temperature parameter, wherein the threshold value is correspondingly set according to different biological growth conditions; and (3) after the optimal temperature growth condition is obtained, generating a specific threshold value corresponding to the current temperature environment, converting the threshold value into a control instruction, transmitting the control instruction to a temperature control unit, correspondingly controlling the temperature in the culture equipment, and carrying out constant monitoring on the temperature. By intelligently adjusting illumination and controlling the temperature of the culture environment, environment parameters can be more accurately controlled, it is ensured that photosynthetic organisms are always in the most suitable growth conditions, and the growth speed and quality of the photosynthetic organisms are improved.
Owner:ENERGY RES INST OF JIANGXI ACAD OF SCI

Large-scale breeding device and breeding method for cherax quadricarinatus

PendingCN119404789Aless fightingReduce elimination rateClimate change adaptationPisciculture and aquariaShrimpMating
The invention discloses a large-scale breeding device and method for cherax quadricarinatus. The breeding method comprises the steps of parent shrimp selection and breeding, incubation management and shrimp seed breeding management. Wherein the designed breeding device comprises a hole structure and a shading plate which are bricked in a mating pool, and an inhabiting layer type pore plate for collecting and breeding the young shrimps, so that the mating rate of the parent shrimps, the hatching rate of egg-carrying shrimps and the survival rate of the young shrimps can be effectively increased, the elimination rate of the parent shrimps is greatly reduced, and large-scale production and large-batch emergence of the young cherax quadricarinatus are realized.
Owner:GUANGDONG EVERGREEN FEED INDAL

Staphylococcus warneri AACE8 capable of promoting growth of armillaria mellea and application of staphylococcus warneri AACE8

The invention discloses staphylococcus warneri AACE8 capable of promoting the growth of armillaria mellea and application of the staphylococcus warneri AACE8, and relates to the technical field of microorganisms. The invention also discloses an application of the staphylococcus warneri AACE8 in promoting the growth of armillaria mellea. The staphylococcus warneri AACE8 has the capacity of degrading cellulose and producing indole-3-acetic acid, can promote extension and branching of armillaria mellea rhizomorpha, and improves the growth speed, biomass and wood degradation speed of the armillaria mellea rhizomorpha.
Owner:KUNMING UNIV OF SCI & TECH +1

Monitoring system for edible mushroom cultivation environment

The invention discloses an edible mushroom cultivation environment monitoring system, and relates to the technical field of edible mushroom environment monitoring, the edible mushroom cultivation environment monitoring system comprises an edible mushroom analysis module, an edible mushroom environment monitoring module and a control module, the current cultivation phenomenon of edible mushrooms is monitored, and then a cultivation stage corresponding to the current edible mushrooms is obtained through analysis; and analyzing the corresponding demand monitoring instrument and screening to obtain the placement position of the corresponding monitoring instrument, so as to monitor the cultivation environment corresponding to the edible fungi in various aspects, further analyze the current state of the cultivation environment corresponding to the edible fungi in various aspects, and further adjust the cultivation environment corresponding to the edible fungi in various aspects. The corresponding effective growth of the edible mushrooms is guaranteed, the corresponding growth rate and growth quality of the edible mushrooms are improved, timely and effective prevention and adjustment when the edible mushroom cultivation environment is abnormal are achieved, corresponding growth and cultivation of the edible mushrooms are rapidly and efficiently guaranteed, and the richer edible mushroom yield is harvested.
Owner:JINGJIANG LIZHU AGRI TECH CO LTD

Preparation method of high-orientation hydrophobic oxide antireflection film for diamond infrared window

The invention discloses a preparation method of a high-orientation hydrophobic oxide antireflection film for a diamond infrared window, and belongs to the technical field of optical film preparation. The preparation method comprises the steps of diamond surface precision polishing, diamond surface acid boiling, magnetron sputtering and the like. According to the invention, the high-orientation oxide composite target material is adopted to prepare the high-orientation antireflection film, and a low-temperature and high-temperature alternate coating mode is adopted, so that the prepared antireflection film has the characteristics of slight hydrophobicity and high orientation; the synthesis process is good in process continuity and simple in synthesis process.
Owner:JILIN UNIVERSITY

Vacuum device and detection device for monitoring contact position of seed crystal and melt

ActiveCN222544778USolve the unobservable problemAvoid being soaked below the melt liquid levelPolycrystalline material growthBy pulling from meltCarbide siliconContact position
The utility model relates to the technical field of silicon carbide crystal growth, in particular to a vacuum device and a detection device for monitoring the contact position of a seed crystal and a melt. The utility model provides a vacuum device which comprises a fixing device and an electrode binding post. The fixing device further comprises a flange upper cover, a metal window flange and a base. The utility model provides a detection device for monitoring the contact position of the seed crystal and the melt. The device comprises the vacuum device, a lead and a universal meter, according to the detection device, the contact condition of the seed crystal and the melt liquid level can be judged by observing the change of the universal display number. When the seed crystal is in contact with the liquid level of the melt, sudden change of the reading of the resistance value of the universal meter is triggered to judge the welding position of the seed crystal, so that the problem that the welding process of the seed crystal cannot be observed is solved, and the conditions that the seed crystal is not in contact with the liquid level of the melt and the seed crystal is excessively immersed below the liquid level of the melt can be avoided; the growth stability of the silicon carbide single crystal is improved, and the quality of the single crystal is improved.
Owner:SU ZHOU QING YAN BAN DAO TI KE JI YOU XIAN GONG SI

Prawn culture-oriented ecological environment condition dynamic evaluation system

The invention discloses a prawn culture-oriented ecological environment condition dynamic evaluation system, and relates to the technical field of culture, prawn metabolism states under different salinity are tested through a test module, the influence of salinity on prawn metabolism can be analyzed, an appropriate salinity range is preliminarily screened out by constructing an influence coefficient Yxxs, and the salinity of prawns can be evaluated according to the influence coefficient Yxxs. According to the method, the defects of traditional empirical judgment are overcome, salinity optimization is more scientific and digitized, and the survival rate and the culture efficiency of the prawns are improved. The survival rate Chz is obtained through secondary screening of the survival analysis module and in combination with survival conditions lasting for the same duration under different salinity, and the salinity in the culture pond is further optimized according to the value, so that the influence of salinity change on prawns can be continuously monitored, the culture environment can be dynamically adjusted, and the survival rate of the prawns is improved. It is ensured that prawns grow under the optimal survival condition, and therefore the death risk caused by environment changes is reduced.
Owner:QINGDAO EXCELLENCE OCEAN GRP CO LTD +2

Method for preparing NaP molecular sieve / activated carbon composite material from coal gangue

The invention discloses a method for preparing a NaP molecular sieve / activated carbon composite material from coal gangue, belongs to the technical field of coal-series solid waste recycling, and aims to solve the technical problem that the alkali resistance and wear resistance of a coal gangue-based molecular sieve need to be further improved in the prior art. The method comprises the following steps: adding a crystallized molecular sieve into a vapor deposition device, carrying out vapor deposition to obtain a carbonized molecular sieve, and carrying out hot isostatic pressing to obtain the carbon-coated molecular sieve. And carrying out vapor deposition, hot isostatic pressing and oxidation liquid treatment, and finally cross-linking through a hydrophilic modifier to obtain the wear-resistant, alkali-resistant and hydrophilic composite molecular sieve.
Owner:HUAINAN NORMAL UNIV +1

Edible mushroom culture medium and preparation method thereof

The invention provides an edible fungus culture medium and a preparation method, and relates to the technical field of edible fungus cultivation, and the edible fungus culture medium comprises the following components by mass: 10-20 parts of a seaweed polysaccharide matrix, 5-15 parts of insect protein powder, 15-25 parts of biological carbon fiber, 10-20 parts of corncob powder, 0.5-2 parts of a natural silicon source, a proper amount of a trace element solution, and a proper amount of water. The algal polysaccharide matrix is obtained by extracting algal polysaccharides, including algin or alginic acid, from algae in hot water, the insect protein powder is prepared by drying, crushing and carrying out enzymolysis on yellow mealworms or fly maggots, the biochar fibers are prepared by pyrolyzing bamboo or crop straws, and the natural silicon source is diatomite, bentonite or perlite; the particle size of the natural silicon source is micron-sized, and the trace element solution contains zinc, iron, copper and manganese elements. The culture medium has the beneficial effects that the problems of unbalanced nutrition, poor physical performance, weak disease resistance and the like of the culture medium in the prior art are effectively solved.
Owner:GUIZHOU AGRI VOCATIONAL COLLEGE

Zinc gallate film prepared by two-step method, and preparation method and application thereof

The invention discloses a zinc gallate film prepared by a two-step method, and a preparation method and application thereof, and belongs to the technical field of semiconductor materials. The invention provides a method for preparing a zinc gallate film through a two-step method. The method comprises the following steps that a C-face sapphire substrate is pretreated, surface impurities and water are removed, and a pretreated sapphire substrate is obtained; mixing the gallium acetylacetonate solution and the zinc acetylacetonate solution, adding hydrochloric acid, stirring until the mixture is completely dissolved, and standing to obtain supernatant liquid; under the normal pressure condition, inert gas is used as current-carrying gas, the supernatant liquid is subjected to ultrasonic atomization treatment and then conveyed to the surface of the pretreated sapphire substrate, a nucleating layer is formed through deposition at the temperature of 500-550 DEG C, then the temperature is increased to 600-650 DEG C, an epitaxial film is formed through deposition, and the single crystal spinel zinc gallate thin film is obtained. The zinc gallate thin film with higher quality is prepared through a two-step method.
Owner:SHANDONG UNIV

Aquaculture wastewater microalgae recycling system and method thereof

The invention relates to the technical field of aquaculture wastewater cyclic utilization, in particular to an aquaculture wastewater microalgae cyclic utilization system and a method thereof.The aquaculture wastewater microalgae cyclic utilization system comprises a raceway pond, a wastewater pretreatment mechanism and a power stirring mechanism, and a pipeline type photobioreactor is arranged on one side of the raceway pond; one side of the top end of the pipeline type photobioreactor is connected with a liquid storage tank, the bottom end of the liquid storage tank is connected with a second connecting pipe, the bottom end of the liquid storage tank is connected with a liquid discharging pipe, one end of the raceway pond is provided with a gas storage tank, one end of the gas storage tank is connected with a first connecting pipe, and the middle of the raceway pond is fixedly connected with a second partition plate. The system is high in applicability, high in stability and high in flexibility, the position is adjusted according to specific conditions, the microalgae culture cost of the system is low, the process is simple and convenient, the benefits of a user are improved, meanwhile, waste water generated by aquaculture can be recycled and turned into wealth, secondary pollution to the environment is avoided, and the environment can be protected.
Owner:南京坤穹机械设备有限公司 +1

Novel paenibacillus GD-2 and application thereof in carbon sequestration

The invention relates to the technical field of microbial carbon sequestration, in particular to novel paenibacillus GD-2 and application thereof in carbon sequestration. The preservation number of the paenibacillus GD-2 disclosed by the invention is CGMCC (China General Microbiological Culture Collection Center) No. 31835. The paenibacillus GD-2 provided by the invention is a potential new strain in paenibacillus separated from fixed inter-plate soil in a salinization photovoltaic field area, has dual carbon sequestration capability, can convert carbon dioxide in the atmosphere into carbonate minerals, can grow by converting the carbon dioxide into own biochar (organic carbon), and has the advantages of being simple in preparation process and low in cost. The strain can grow under the condition that only atmospheric carbon dioxide is contained, meanwhile, the growth rate of the strain can be remarkably improved through NaHCO3, an external carbon source and an electron donor are not needed, the carbon sequestration cost is reduced, and the strain has important significance for improving the soil carbon sequestration and sink increasing potential, promoting high-quality development of the photovoltaic industry in a salinization fragile area and relieving global climate warming.
Owner:PEKING UNIV

Simulation ecological pool for giant salamander culture

The utility model discloses a simulated ecological pool for giant salamander cultivation, and relates to the technical field of giant salamander cultivation. Comprising a temperature control device and a plurality of breeding units, each breeding unit comprises an ecological pool and water storage tanks matched with the ecological pool in a one-to-one mode, each ecological pool comprises a pool body, and a barrel column is vertically arranged in the middle of each pool body; the water supply system comprises a water supply pipe arranged in the barrel column, the top of the water supply pipe comprises a water supply branch pipe and a spray head, the water supply branch pipe and the spray head are both provided with electromagnetic valves, and a water outlet of the water supply branch pipe is close to the initial end of the water channel; the water channel is spirally arranged around the barrel column; the multiple caves are formed in the outer side of the water channel and are sequentially arranged from high to low, and the tops of the caves are vegetation layers; one end of the water outlet pipe is communicated with the tail end of the water channel, and the other end is communicated with the water storage tank. According to the giant salamander cultivation system, water flow is accurately controlled, diversified inhabiting environments are provided, water resources are recycled, and the survival rate and the growth speed of giant salamanders are improved through the cultivation mode.
Owner:JINZHAI COUNTY AGRI & RURAL AFFAIRS BUREAU

Timing watering device for potato planting

The utility model discloses a regular watering device for potato planting, and relates to the technical field of agricultural planting. Comprising a fixing frame, supporting columns are installed on the periphery of the bottom end of the fixing frame, and a plurality of arc-shaped plates are installed at the top end of the fixing frame; the photosynthetic mechanism is arranged on the inner side of the arc-shaped plate and used for providing a light source needed by growth and development of the potatoes in the potato planting process; the irrigation mechanism is arranged below the fixing frame and used for providing a water source in the potato planting process. According to the utility model, through the cooperative setting of the irrigation mechanism and the photosynthesis mechanism, water source irrigation of different degrees can be carried out on potatoes in different periods, meanwhile, illumination required in the growth process of the potatoes can be supplemented, the growth rate of the potatoes is improved, water resources are saved, and the utilization rate of the device is improved.
Owner:QINGHAI WEISITUN POTATO IND GRP CO LTD +1

Application of PdAKR2A gene in improving photosynthetic rate and biomass of poplar

ActiveCN119286916Aincrease plant heightincrease the diameter
The invention discloses application of a PdAKR2A gene in improving the photosynthetic rate and biomass of poplar, and belongs to the technical field of genetic engineering breeding of poplar. The overexpressed PdAKR2A gene is disclosed for the first time, the cambium cell layer number and xylem width of the poplar can be remarkably increased, the plant height and ground diameter of the poplar are further increased, and therefore the growth rate and biological yield of the poplar are increased; the net photosynthetic rate, stomatal conductance, transpiration rate and chlorophyll content of the poplar can be obviously improved; the lignin and cellulose content of the poplar can be obviously improved; the provided PdAKR2A gene can be used as a candidate gene for cultivating a new variety of poplar which is higher in growth rate and better in quality, and has important significance on promoting sustainable development of forestry in China and relieving supply and demand tension of the wood market.
Owner:QINGDAO AGRI UNIV

Aquaculture mesh cage depth adjusting device

The utility model relates to an aquaculture mesh cage depth adjusting device, and belongs to the technical field of aquaculture. The device comprises a cable take-up and pay-off mechanism arranged on a ship body, and a hoist rope connecting the cable take-up and pay-off mechanism and a culture net cage, wherein the cable take-up and pay-off mechanism controls the depth position of the culture net cage in seawater by tightening or loosening the hoist rope. The utility model provides a depth adjusting device for an aquaculture mesh cage, and aims to meet the requirements of cultured organisms in different seasons and environmental conditions by accurately controlling the depth of the aquaculture mesh cage in the sea, so that the culture efficiency and the product quality are improved. Specifically, by tightening or loosening the hoist rope, the aquaculture mesh cage can be adjusted to be located in water bodies of different depths, and then the growth environment of cultured organisms is adjusted.
Owner:DALIAN YITAI FISHERY TECH CO LTD

Device and method for laser crystal growth based on seed crystal reentry method

The invention discloses a device and a method for laser crystal growth based on a seed crystal reentry method. The device comprises a furnace body and a control system, the lifting mechanism is arranged in the furnace body and is fixedly connected with the top of the furnace body; the lifting mechanism is connected with a seed crystal support, a rotating mechanism is arranged on the seed crystal support, and a torque detection device is arranged on the rotating mechanism; the seed crystal support is used for loading seed crystals; a crucible is arranged under the seed crystal, a plurality of heating units are arranged around the crucible, a rotating magnetic field generator is also arranged around the crucible, and a cooling system is arranged around the rotating magnetic field generator. According to the device and method for laser crystal growth based on the seed crystal reentry method, the eddy current phenomenon in the laser crystal growth process is effectively restrained by accurately controlling the intensity and frequency of the rotating magnetic field and optimizing magnetic field distribution.
Owner:WUXI OPTICAL RES TECH CO LTD

Deepwater net cage fish feeding control method and system

The invention discloses a deepwater net cage fish feeding control method and system, and the method comprises the steps: generating a cultured fish detail list in a target deepwater region according to the fish information, and carrying out the multi-round spiced salt denoising processing of the obtained image data of the target deepwater culture region, inputting the underwater light data into the water body thermal stratification model to obtain each deepwater hierarchy and short wave radiation data corresponding to each deepwater hierarchy; and analyzing and identifying the image data through an AI graph identification algorithm to obtain fish growth data, constructing a feeding amount control model according to a cultured fish detail list, the fish growth data and the short-wave radiation data, and generating a culture visualization report to realize feeding control of fishes in the target deepwater culture area. Fish growth and health are analyzed through image data, a feeding control model is constructed and optimized according to data such as the ammonia nitrogen content, the dissolved oxygen content and short wave radiation, feeding amount control is optimized, the fish growth speed is increased, the fish growth quality is improved, and long-term sustainable breeding is achieved.
Owner:GUANGDONG OCEAN UNIVERSITY

Method for preparing monocrystal diamond based on carbon dioxide / methane mixed gas carbon source

The invention discloses a method for preparing single crystal diamond based on a carbon dioxide / methane mixed gas carbon source, which adopts a microwave plasma chemical vapor deposition method and takes CH4 / CO2 mixed gas as the carbon source to prepare the high-quality single crystal diamond, and obviously improves the growth rate of the single crystal diamond. The method solves the problems that the existing carbon dioxide methanation conversion rate is not high, and the carbon dioxide / methane mixed gas output after conversion cannot be directly converted into the high-value single crystal diamond, and the method has important significance for converting the carbon dioxide into the diamond.
Owner:ZHEJIANG UNIV OF TECH

High-strength 99 aluminum oxide ceramic as well as preparation method and application thereof

The invention belongs to the technical field of aluminum oxide ceramics, and particularly relates to a high-strength 99 aluminum oxide ceramic as well as a preparation method and application thereof. The boehmite and the hydrotalcite are used as main components of a binder, the boehmite and hydrotalcite composite sol is obtained by adopting a specific preparation method, and the boehmite and hydrotalcite composite sol is applied to a preparation process of aluminum oxide ceramics, so that an aluminum oxide ceramic material with high strength and high density can be obtained. Besides, the sintering aid adopted by the invention can react with MgO and Al2O3 generated by decomposition in the binder to generate a low-melting-point liquid phase, so that redistribution of substances among particles and filling of pores are facilitated, and the density and the dielectric property are further improved.
Owner:HENAN JIYUAN BROTHER MATERIAL CO LTD

Agricultural planting seed budding device

The invention discloses an agricultural planting seed sprouting device, and relates to the technical field of seed cultivation devices.The agricultural planting seed sprouting device comprises a cultivation box, a lifting assembly is fixedly connected to one side of the interior of the cultivation box, a lifting plate is fixedly connected to the top end of the lifting assembly, and the lifting plate is slidably connected to the interior of the cultivation box; a transmission assembly is arranged between the lifting assembly and the lifting plate. By adopting the structure, the transmission block drives the second connecting block to move, and the second connecting block pushes the transmission rod to rotate in the first connecting block, so that the first connecting block drives the lifting plate to move, and the lifting rod slides in the fixed seat, that is, the lifting plate drives the placing barrel to move upwards, and the distance between seeds in the placing barrel and an illumination lamp and a spraying head is adjusted; the method can ensure that different types of seeds in different growth stages can obtain light intensity and water supply most suitable for the growth of the seeds, so that the healthy development of the seeds is promoted, and the growth speed and the overall health condition of seedlings are improved.
Owner:WUAN AGRI & ANIMAL HUSBANDRY BUREAU

Lung cancer organoid culture medium, culture medium system and culture method thereof

The invention discloses a lung cancer organoid culture medium, a culture medium system and a culture method thereof, the culture medium system comprises an initial culture medium, an amplification culture medium and a differential culture medium, and the initial culture medium comprises an Advanced DMEM / F12 basal culture medium, Glutamax, nicotinamide, R-spondin-1, rhNoggin, FGF-7, FGF-10, B27, Y-27632, A83-01, SB202190 and prostaglandin E2. Hydrocortisone and Forskolin are added into the amplification culture medium; hydrocortisone and dexamethasone are added into the differential culture medium, and the culture medium system is adopted for lung cancer organoid culture. Cells obtained from lung cancer tissues are subjected to primary lung cancer organoid culture in the initial culture medium; then, transferring the obtained lung cancer organoid cells into an amplification culture medium for amplification culture; and then, transferring the lung cancer cells into a differential culture medium for differential culture to obtain the lung cancer organoid.
Owner:HUAXIAYUAN (JIANGSU) BIOTECHNOLOGY CO LTD