20results about How to "Efficient growth process" patented technology

The invention discloses a batch type aluminum nitride crystal growth furnace and a growth method. The growth furnace comprises a furnace shell, a heat preservation screen structure, a heating component, a crucible body and the like. The crucible body consists of a crucible cover, a crucible bottom wall, a crucible outer wall, a crucible inner wall and a seed crystal supporting table; the inner wall of the crucible is a polygonal regular prism cylinder with a plurality of small holes distributed in the cylinder wall; the seed crystal supporting table is a polygonal regular prism with a through hole in the center; the seed crystal supporting table, the crucible inner wall and the crucible outer wall are sequentially sleeved on the crucible bottom wall from inside to outside, and the crucible cover covers the tops of the seed crystal supporting table, the crucible inner wall and the crucible outer wall to define a crucible cavity; wherein the crucible cavity is divided into a crystal growth chamber and a raw material accommodating chamber by the crucible inner wall. During crystal growth, a seed crystal is fixed on the outer side surface of the seed crystal supporting table, an aluminum nitride raw material is placed in the raw material accommodating chamber, and the aluminum nitride raw material is decomposed at high temperature to form a gas-phase substance which is transmitted to the surface of the seed crystal through the inner wall of the porous crucible. The design of the crucible body forms a plurality of crystal horizontal growth systems which are circumferentially distributed around the seed crystal supporting table, so that batch type aluminum nitride crystal growth is realized.

The invention relates to a method for realizing rapid nitrous accumulation through short-cut nitrification and endogenous short-cut denitrification coupled flora, and belongs to the technical field of nitrogen-containing sewage treatment in environmental protection. According to the method disclosed by the invention, short-cut nitrification and endogenous short-cut denitrification coupling is realized, rapid nitrous accumulation can be realized, an organic carbon source does not need to be consumed, and the consumption of substances and energy is reduced. Meanwhile, the method provided by the invention not only can be used for treating the wastewater containing ammonia nitrogen, but also can be used for treating the wastewater containing nitrate nitrogen, solves the problem that nitrate nitrogen is generated due to partial whole-process nitrification in short-cut nitrification, and can ensure high-efficiency and long-term stable accumulation of nitrous; and a quick starting method is provided for a sewage plant adopting a short-cut denitrification related process.

The utility model discloses a resistance type silicon carbide crystal growing device which comprises a lower sealing frame, a shell is fixed at the top end of the lower sealing frame, a heating inner container is fixed at the bottom of the shell, and a graphite crucible body with the height smaller than that of the heating inner container is installed in the heating inner container in a sliding mode. The lower resistance type heating source is mounted in the lower sealing frame, and a graphite crucible cover is detachably mounted at the top end of the lower sealing frame and the top end of the heating inner container; the auxiliary transmission shaft is rotationally installed on the inner wall of one side of the heating inner container. The gear and rack lifting mechanism is arranged along the inner wall of one side of the heating inner container, the height size of the graphite crucible body is not influenced, the growth height of crystals in the crucible is not influenced, the Z-axis space in the growth device can be saved to the greatest extent, and the growth efficiency is improved. And the growth device can realize more efficient crystal growth in a limited space.

A plant cultivation light source includes at least two light sources selected from first, second, and third light sources that emit first, second, and third lights, respectively. The first light has a first peak at a wavelength from about 400 nanometers to about 500 nanometers, the second light has a second peak appearing at a wavelength, which is longer than the first peak, from about 400 nanometers to about 500 nanometers, and the third light has a third peak appearing at a wavelength, which is shorter than the first peak, from about 400 nanometers to about 500 nanometers. The first light has a color temperature of about 5000K, and has a first sub-peak having an intensity lower than an intensity of the first peak at a wavelength from about 500 nanometers to about 700 nanometers. The first sub-peak has a full-width at half-maximum greater than a full-width at half-maximum of the first peak.

The invention relates to a lactic acid bacteria composition and an application thereof in a low-temperature liquid biological feed, in particular to a lactic acid bacteria complex microbial inoculant suitable for a low-temperature environment (15-25 DEG C) and a fermentation process of the lactic acid bacteria complex microbial inoculant. The combination comprises pediococcus pentosaceus WP101 (the preservation number is CCTCC NO: M 20241055) and lactobacillus plantarum PC01 (the preservation number is CCTCC NO: M2022106), and the viable count of the combination is 25 million cfu / g feed according to the proportion of 1: 1. By optimizing the synergistic effect of strains and fermentation conditions, efficient fermentation in a low-temperature environment is realized, the content of lactic acid in the feed is remarkably increased, and growth of harmful microorganisms is inhibited. Animal experiments show that the fermented feed can reduce the diarrhea rate of piglets by 45.5% (Plt; 0.05), improve the daily gain of fattening pigs in the later period and the feed conversion rate, and reduce the loss of dry matters at the same time. The problem of energy consumption caused by the fact that traditional medium-temperature fermentation depends on heating and heat preservation is solved, technical support is provided for large-scale low-temperature liquid biological feed production, and economic and environmental benefits are achieved.

The invention provides an intelligent robot for automatically feeding Hu sheep, which is characterized in that a spiral auger is arranged in a stock bin, the spiral auger is driven by a driving mechanism to work, the stock bin is arranged on a frame, two discharge ports are symmetrically formed in the bottom of the stock bin, the discharge ports are connected with an overturning discharge hopper, and shifting mechanisms are arranged on two sides of the stock bin respectively; the material shifting mechanism comprises a material shifting cross rod, a connecting assembly and a ball screw set, the ball screw set comprises two ball screws and a coupler, the two ball screws are connected through the coupler, the directions of threads on the two ball screws are opposite, the ball screws are controlled by a driving motor to rotate, and the end of the material shifting cross rod is connected with the ball screws through the connecting assembly. The two material stirring cross rods do opposite front-and-back reciprocating motion in the axis direction of the spiral auger, and a plurality of stirring rods are arranged on the material stirring cross rods, so that self-walking feeding and feeding are achieved, large feed blocks bonded into small feed blocks can be separated and stirred into small feed blocks, it is guaranteed that young sheep can chew and swallow the feed blocks smoothly, and normal and efficient growth of the young sheep is guaranteed.

This utility model discloses an intelligent constant temperature and humidity incubator for edible fungi, belonging to the technical field of edible fungi incubators. It includes a cabinet with elongated air vents on its inner sidewall and a flow equalization mechanism on the outer back of the cabinet. The flow equalization mechanism includes an airflow mixing chamber sealed to the back of the cabinet. A vortex hood is fixed to the side of the airflow mixing chamber that contacts the cabinet, and a centrifugal impeller is rotatably mounted inside the vortex hood via a shaft. By setting an airflow control mechanism on the incubator, the treated airflow is buffered in the airflow mixing chamber. Combined with a flow equalization device consisting of a drive motor, transmission components, vortex hood, and centrifugal impeller, the airflow is further accelerated and distributed, allowing it to enter the shelf layers of the incubator with a wider coverage area and stronger power. This ensures that the airflow flows fully around the edible fungi container, guaranteeing efficient growth of the fungi under constant temperature and humidity conditions.

The invention belongs to the technical field of electrolysis water oxygen evolution reaction catalysis, and relates to a preparation method and application of a Ru-FeOOH / NF integrated electrocatalyst for electrolysis water oxygen evolution, and the method comprises the following steps: immersing foamed nickel in an acetone solution, a hydrochloric acid solution and deionized water in sequence for ultrasonic cleaning, and carrying out vacuum drying for later use; the preparation method comprises the following steps: dissolving ferric salt and ruthenium salt in a molar ratio of (0.1-5): (0.01-0.5) in deionized water, then adding a certain amount of hydrogen peroxide into the deionized water, and uniformly stirring to obtain a mixed solution; placing the mixed solution and foamed nickel at 90-130 DEG C for hydrothermal reaction for 5-12 hours; and then carrying out ultrasonic washing and vacuum drying to obtain the Ru-FeOOH / NF electrocatalyst. According to the method, the Ru-FeOOH composite catalyst grows on the foamed nickel in situ through a simple one-step hydrothermal synthesis method, uniform dispersion and efficient catalysis of the catalyst are achieved, and the method is simple in step and suitable for large-scale production.

The invention relates to a gas dispersing and heating device and equipment and a method for continuously preparing carbon nanotube in-situ modified glass fibers, the gas dispersing and heating device can directly guide gas into a heating furnace through a gas diffuser, so that the atmosphere of a heating area is stable, and the reaction is stable. According to the equipment for continuously preparing the carbon nanotube in-situ modified glass fiber, two processes of glass fiber surface catalyst layer arrangement and carbon nanotube in-situ growth which are greatly different can be integrated into one set of equipment, and the matching of the processes and the equipment is realized, so that the continuous preparation of the carbon nanotube in-situ modified glass fiber can be realized, and the continuous preparation of the carbon nanotube in-situ modified glass fiber is realized. According to the method, continuous efficient modification of the carbon nanotubes on the glass fibers can be realized, the production efficiency can be greatly improved, the growth consistency and controllability of the carbon nanotubes can be ensured, and industrial preparation of the carbon nanotube in-situ modified glass fibers is facilitated, so that the method is more practical.

The present invention provides a flux for silicon carbide crystal growth, a cubic silicon carbide crystal and a growth method thereof, belonging to the technical field of crystal growth, wherein the flux is an alloy comprising a rare earth metal, a transition metal and carbon: the molar ratio of the rare earth metal to the transition metal is 1:9 to 9:1. The flux provided by the present invention can reduce the growth temperature of silicon carbide crystals, realize the growth of silicon carbide crystals at a lower temperature, and at the same time can increase the solubility of carbon in silicon melt, increase the concentration of carbon in silicon melt in the early stage of crystal growth, and realize obtaining high-quality and large-sized silicon carbide crystals in a shorter time.

The invention relates to the technical field of biology, in particular to the technical field of formic acid biological utilization and efficient biological conversion. The invention provides a formic acid biotransformation engineering strain. The bacterial strain is obtained after a plasmid pED31-FFM and a plasmid pAD31-gcvTHP are introduced into escherichia coli, and the plasmid pED31-FF M is obtained after an ftfl-fchA-mtdA (FFM) gene is connected to a pED31 empty plasmid; the plasmid pA D31-gcvTHP is obtained by connecting a gcvTHP gene to a pAD31 empty plasmid, and the plasmid pA D31-gcvTHP can be obtained by connecting the gcvTHP gene to the pAD31 empty plasmid. According to the strain provided by the invention, under the initial concentration of 20-60mM formic acid, the multiplication time is within 5 hours, the biomass yield can reach 6g CDW / mol formic acid, the single-cell protein yield can reach 2.45-4.2 g / mol, and the international leading level of formic acid conversion and biomass is reached.

The application discloses a kind of high-stability MOF membranes and its preparation and gas-liquid separation application.First, dense MIL-140s seed layer is deposited on porous support;Then it is placed in precursor liquid containing metal source and organic ligand, and gradually fills the gap between seed layer by coordination reaction of metal source and organic ligand through certain period of thermally induced growth, finally forming continuous well anastomosed MIL-140s membrane layer;Gas (liquid) body separation test shows that MIL-140s membrane has excellent gas-liquid separation performance.It is particularly pointed out that changing thermally induced growth temperature can significantly control and optimize MIL-140s membrane microstructure (such as crystal orientation, membrane thickness, intercrystalline defect, etc.), thereby changing MIL-140s membrane separation channel size and corresponding separation system.The above research results are expected to realize the directional design and controllable optimization of MOF membrane microtopography and separation performance, and have good industrial application prospect.

The invention discloses a resistance heating type electric furnace for growing a large-area single crystal ingot and a system thereof, and the resistance heating type electric furnace for growing the large-area single crystal ingot according to the embodiment of the invention comprises a closed cavity; the crucible is positioned in the cavity and is used for accommodating semiconductor raw materials; the cover body is positioned at the upper part of the opening of the crucible, a seed crystal is formed on the inner side of the cover body, and the crucible and the cover body jointly form a growth furnace; and a heating unit that is provided at a distance from the growth furnace and that heats the growth furnace in a plurality of heating regions by resistance heating so as to grow a single crystal ingot on the seed crystal.

The present invention belongs to the field of preparation of oral liquid containing ginseng stem cells, and in particular to an oral liquid preparation containing ginseng stem cells and a preparation method thereof. The present invention adopts ultrasonic crushing after cultivation of growth-promoting bacteria, and cooperates with nutrient slurry and calcium chloride to promote the rapid formation of cell walls of pure ginseng stem cell protoplasts, and the cells have high growth vitality. The plant extract obtained by extraction improves the synthesis and accumulation of ginsenosides in pure ginseng stem cell groups; the nutrient absorption-promoting nanoemulsion obtained by high-pressure homogenization can improve the solubility of each component, and adhere to the surface of small intestinal epithelial cells, and play a long-term absorption-promoting role; the ginseng stem cell mixture is mixed with a flavor-correcting and stabilizing solvent, and the prepared oral liquid preparation containing ginseng stem cells contains rich ginsenosides, is easy to be absorbed by the small intestine, has strong stability, and will not precipitate and stratify after long-term storage.

The invention discloses a lactic acid bacteria high-density culture method based on a pH control system, and relates to the technical field of lactic acid bacteria culture.The lactic acid bacteria culture stage is monitored in real time, a pH sensor and a PID control algorithm are adopted, the pH value in the fermentation process is maintained within the range of 6.7 + / -0.1, excessive accumulation of lactic acid is avoided, and large fluctuation of the pH value is avoided; the lactic acid bacteria efficiently grow in a stable acid-base environment, the fermentation efficiency and the thallus yield are greatly improved, more effective pH control is provided, the growth speed of the lactic acid bacteria is increased, high-density thallus culture is maintained, automatic adjustment is carried out in the fermentation process, continuity and stability are provided for the fermentation environment, the fermentation time is shortened, and the production cost is reduced. In the same fermentation period, the biomass of lactic acid bacteria is remarkably increased, the yield is improved, the overall production efficiency and economic benefits are improved, an automatic pH control system can continuously monitor the environment in the fermentation tank, automatic adjustment is conducted when the pH value changes, and the risk of personal errors is reduced.

The present invention provides a device and method for liquid phase growth of silicon carbide crystals, belonging to the field of crystal growth technology, the device includes a crucible assembly, a seed crystal rod assembly, a heating assembly located outside the crucible assembly, and a heat preservation assembly wrapping the crucible assembly, the seed crystal rod assembly and the heating assembly; the crucible assembly includes a first crucible and a second crucible arranged in sequence from outside to inside; the first crucible is provided with a detachable crucible cover, and the crucible cover is provided with a fixing component for fixing the seed crystal rod assembly; the inner bottom surface of the first crucible is provided with a boss; the outer bottom of the second crucible is provided with a groove matching the shape of the boss, and the middle of the groove is provided with a pushing assembly for pushing, pulling and rotating the second crucible; the pushing assembly passes through the bottom of the first crucible, the heating assembly and the heat preservation assembly in sequence. The device provided by the present invention can ensure the temperature stability of the silicon carbide crystal growth process, while avoiding the problem of excessive jitter during the seed crystal pulling and rotation process.

The invention provides a mycoplasma high-density culture medium and a preparation method and application thereof, and relates to the technical field of biology, the mycoplasma high-density culture medium comprises the following components: 3-8 g / L of PPLO broth powder, 3-8 g / L of BHI broth powder, 3-8 g / L of yeast extract powder, 1.5-4 g / L of lactose, 0.3-0.7 g / L of aspartic acid, 0.03-0.08 g / L of serine, 3-6 g / L of a buffer agent, 1.5-4 g / L of DNA, 100-200 ml / L of pig serum, 0.01-0.03 g / L of phenol red, and water as a solvent. By adding aspartic acid, serine and DNA, precursor substances are provided for synthesis of mycoplasma purine and pyrimidine, and the titer of the viable count can be greatly improved. By using the mycoplasma high-density culture medium, the efficient growth of mycoplasma is ensured, and the sensitivity and the detection line of the detection method are improved.

The utility model discloses a living cell culture cabinet for biological medicine, which relates to the technical field of cell culture cabinets and comprises a cabinet body, a dynamic culture component is rotatably connected between the upper surface and the lower surface of an inner cavity of the cabinet body, a humidifying component is fixedly mounted on the rear side of the cabinet body, and a partition plate is fixedly mounted on the inner surface of the cabinet body. A temperature and humidity sensor is fixedly installed at the upper portion of the left side of the cabinet body, the detection end of the temperature and humidity sensor is located in an inner cavity of the cabinet body, a heat dissipation groove is formed in the left side of the upper surface of the cabinet body, and a heat dissipation fan is fixedly installed on the lower surface of the bottom of the heat dissipation groove through screws. The motor drives the incomplete gear and the full gear to rotate intermittently, so that the connecting column and the culture tray are driven to rotate, living cells are driven to rotate and stir, the density and the state of the living cells are improved, the requirement for dynamic culture of the living cells is met, and the living cells grow more quickly and efficiently.

The invention relates to the technical field of biological products, in particular to a preparation method of a culture medium for efficiently culturing mycoplasma gallisepticum at low cost, which comprises the following steps: step 1, dissolving and blending: a, preliminary dissolving: adding NaCl, K2HPO4 and MgSO4. 7H2O into 1000mL of distilled water, heating to 40 DEG C, and slightly stirring until the NaCl, K2HPO4 and MgSO4. 7H2O are completely dissolved to form a basic inorganic salt solution; b, adding a carbon and nitrogen source: adding glucose, soy peptone, tryptone and a yeast extract, and stirring until the materials are completely dissolved; c, pH regulation: regulating the pH value of the solution to 7.4 by using sterile 0.5 M HCl and NaOH; step 2, adding growth factors and nutritional ingredients: a, adding special growth factors: adding L-cysteine and cholesterol under a stirring condition, and continuously stirring until the L-cysteine and the cholesterol are completely dissolved; the cost is low: animal serum and protein raw materials are replaced by using the plant-derived protein hydrolysate, and meanwhile, auxiliary components such as vitamins and growth factors are added, so that the cost of the raw materials is reduced.

The invention provides a Fe-ZnO (at) Au-DTNB nano-label with an electronic structure regulated and controlled as well as a preparation method and application of the Fe-ZnO (at) Au-DTNB nano-label, and relates to the technical field of lateral flow immunoassay. The nano-label comprises iron-doped zinc oxide, and the iron-doped zinc oxide is loaded with gold nano-particles. The nano-label further comprises a Raman reporter molecule DNTB, one end of the Raman reporter molecule DNTB is connected with the gold nano-particles through an Au-S bond, and the other end of the Raman reporter molecule DNTB is coupled with the A-influenza-resistant labeled antibody through modified carboxyl. According to the preparation method, the electronic structure of ZnO is adjusted through iron doping, so that surface charges of Fe-ZnO (at) Au-DTNB are enriched; the surface hot spots and the SERS activity are enhanced, so that the excellent performance is given to the LFIA detection system based on the Fe-ZnO (at) Au-DTNB.