48 results about "Synthesis Phase" patented technology

The invention discloses a preparation method of large-particle-size and high-density spherical cobalt oxide. The preparation method aims at achieving the purposes that the median particle size D50 of the cobalt oxide is larger than or equal to 15 microns, particle size distribution is uniform, compacting density (TD) is larger than or equal to 2.2 g/cm<3>, and the large-particle-size and high-density spherical cobalt oxide can meet the development requirement of high-voltage lithium cobaltate. The preparation method of the cobalt oxide includes the cobalt carbonate synthesis stage and the spherical cobalt carbonate thermal decomposition stage. In the cobalt carbonate synthesis stage, a cobalt carbonate precursor prepared through many times of cyclic crystallization is compact and uniform in particle size distribution; due to the segmented thermal decomposition, cobalt carbonate is locally decomposed in the low-temperature pre-decomposing stage, a micro hole channel is formed, release of CO2 gas during subsequent decomposition is facilitated, and particles are prevented from crazing or being broken; in the high-temperature thermal decomposition stage, the particle surface is compact, and therefore the large-particle-size and high-density spherical cobalt oxide is prepared.

The invention relates to a process for preparing a polyurethane prepolymer having terminal isocyanate groups by reacting polyisocyanates with polyols. The process includes a first synthesis stage and a second synthesis stage. A component (A) is prepared in the first synthesis stage using as polyisocyanate (X) at least one asymmetric polyisocyanate and using as polyol at least one polyol having an average molecular weight (M_n) of 60 to 3000 g/mol, with the ratio of hydroxyl groups to isocyanate groups being less than 1. In the second synthesis stage, a further polyol is added to component (A), the reaction ratio of the hydroxyl groups of the further polyol to isocyanate groups of component A being set in the range from 1.1:1 to 2.0:1.

The invention relates to the technical field of lithium ion batteries, in particular to a preparation method of large-particle narrow-distribution aluminum doped tricobalt tetroxide. The method includes a stage of continuously synthesizing large-particle narrow-distribution aluminum doped cobalt carbonate, and a stage of calcining the large-particle narrow-distribution aluminum doped cobalt carbonate. A large-particle cobalt carbonate precursor prepared by continuous centrifugation to improve the solid content, the continuous synthesis method and a special aluminum salt method in the cobalt carbonate wet-process synthesis stage is dense, narrow in particle size distribution, good in sphericity and uniform in aluminum element distribution. Through a three-step calcination method, the temperature in the first step is 180-250 DEG C and the cobalt carbonate is partially decomposed to form a micropore channel; the cobalt carbonate is completely decomposed in the second step in which the temperature is 300-500 DEG C; in the third step, the temperature is 650-800 DEG C, particle surfaces are densified, the content of the cobaltous phase is lower, the crystal form is more complete, and thelarge-particle narrow-distribution aluminum doped tricobalt tetroxide is formed. .

The invention discloses a fermentation method for promoting mythic fungus acid or mythic fungus polysaccharide biology to synthesize. The invention investigates the condition which is needed in the growth phase of mythic fungus cell and product synthesis phase, which respectively investigates the influence of control strategies of pH two phases and oxygen dissolution two phases to mythic fungus acid or mythic fungus polysaccharide biology according to unconsistency of environmental conditions which are needed in the phases of mythic fungus cell growth and production synthesis, and the invention respectively investigates the influence to mythic fungus acid or mythic fungus polysaccharide biology synthesis after control strategies of pH two phases and oxygen dissolution two phases or the fed strategy are mutually coordinated together on the basis of combining with an intermediate fed strategy. The test result shows that mythic fungus cells are obviously prompted to grow no matter respectively adopting a pH value two phases control strategy, an oxygen dissolution concentration two phases control strategy, or coordinating the pH value two phases control strategy and the oxygen dissolution concentration two phases control strategy with the fed strategy together, and the content or yield of mythic fungus acid or mythic fungus polysaccharide are greatly improved.

The invention discloses an implementation method and device for a special effect synthesizing engine of a client side. The implementation method comprises the steps of creating special effect synthesis containing one or a plurality of special effect synthesizing stages according to a special effect synthesis logic, setting time axes corresponding to each special effect synthesizing stage and container nodes hung on the time axes, setting event conditions for triggering the next special effect synthesizing stage in the container nodes, and relating the created special effect synthesizing stages through the event conditions. According to the method and the device disclosed by the invention, editability of special effect synthesis can be expanded, and the need of variable special effect synthesizing representation can be met.

The invention relates to a synthesizing method of high-molecular-weight poly(butylene adipate-co-terephthalate). According to the invention, polyol is added as a chain extender, and the high-molecular-weight poly(butylene adipate-co-terephthalate) (PBAT) is directly synthesized with a melt condensation process. According to the invention, polyol is directly added in a synthesis stage, and high-molecular-weight PBAT can be synthesized. With the method, molecular weight controllable synthesis can be realized, the molecular weight is uniform, and molecular chain structure is uniform. Also, the added polyol is easy to obtain. The addition amount is low, and product performance is not influenced. Through the control over the process and the optimization of reaction auxiliary agents, the reaction time is greatly shortened. The synthesized product has good color, good mechanical performances, and high elongation at break, such that the requirements of film blowing can be satisfied.

Apparatus comprising: an input amplitude and phase calculator configured to determine at least one amplitude value and phase value dependent on a first audio signal; a synthesis amplitude calculator configured to synthesize a further amplitude value associated with each amplitude value dependent on a determined harmonic shaping function; a synthesis phase calculator configured to synthesize a further phase value associated with each phase value; and a signal synthesizer configured to generate a bandwidth extension signal dependent the further amplitude value and the further phase values.

The invention relates to a method for carrying out heterogeneous catalytic exothermic gas phase reactions at a high temperature and high pressure, during which the synthesis gas comprised of a mixture of make-up gas and/or of recycle gas is fed through at least two synthesis stages that are connected in-series to form a synthesis system. The product gases from the synthesis stages, with the exception of the last stage, are separated into at least two partial flows. One partial flow is cooled until the product is condensated out, and the condensate containing the product is separated from the gaseous constituents. Afterwards, the gaseous constituents are combined with the warm portion of the product gas in order to reach the inlet temperature of the next synthesis stage. In addition, the partial flow from which the product was condensated out and removed, can be heated before being remixed with the warm portion of the product gas. After heating, the temperature is less than that of the warm portion of the product gas, and the heat used for heating the partial flow from which the product was condensated out, is extracted, at least in part, from this partial flow during its cooling.

The invention discloses an epsilon-polylysine fed batch fermentation method for enhancing the cell growth and the bioprocess efficiency. The method comprises the following steps: carrying out fermenting culture of epsilon-polylysine producing strains by a fermenting culture medium, supplementing 0.0.25g-0.5g of yeast powder or other organic nitrogen sources to each liter of the fermenting culture medium in a culture system each hour when the pH value of the culture system reduces to 3.6-4.1 until fermentation ending, maintaining the pH value of the culture system in a range of 3.6-4.1 by ammonia water until fermentation ending, supplementing a disinfected fed culture medium containing glucose and ammonium sulfate, and maintaining the content of glucose in the culture system in a range of 5g/L-30g/L until fermentation ending. The fast entrance of cells to the epsilon-polylysine synthesis phase avoids the cell activity loss before the cell synthesis phase and prolongs the cell epsilon-polylysine synthesis time, so the cell epsilon-polylysine synthesis capacity is substantially improved.

The invention discloses a novel bio-based PBAT (polybutylene terephthalate adipate) synthesis method and application. According to the method, polyhydric alcohol is directly added at the synthesis phase in the synthesis process, high-molecular-weight polybutylene terephthalate adipate (PBAT) can be synthesized, molecular weight can be controllably synthesized and is uniform, a molecular chain structure is uniform, added polyhydric alcohol is easily acquired, addition amount of the polyhydric alcohol is low, performance of a product cannot be affected, a technological process is controlled, reaction additives are preferentially selected, reaction time is greatly shortened, and a synthesized product is good in color and completely biodegradable, has excellent mechanical property and can be widely applied to the fields of consumer goods such as packaging materials and disposable tableware.

The invention relates to a synthesis method of 4- hydroxybutyl vinyl ether polyoxyethylene ether, and belongs to the technical field of polyether compound synthesis in organic chemistry. The synthesis method comprises two phases, namely a primary synthesis phase and a final synthesis phase, and specifically comprises the following steps: subjecting a part of 4-hydroxybutyl vinyl ether to a pre-reaction with a primary synthesis catalyst, adding the pre-reaction product into the rest part of 4-hydroxybutyl vinyl ether, introducing ethylene oxide to carry out primary synthesis so as to obtain a primary product, adding a final synthesis catalyst into a part of the primary product to carry out a secondary pre-reaction, and subjecting the secondary pre-reaction product to final synthesis reactions with the rest part of the primary product and ethylene oxide so as to obtain the final product. The product obtained by the technical scheme provided by the invention has the advantages of low by-product content, narrow molecular weight distribution, and high double-bond protection rate.

The invention belongs to the field of battery material manufacturing and particularly relates to a rapid synthesis device for a ternary lithium battery cathode material precursor. The rapid synthesis device comprises a reaction kettle and a thickening device; an overflow hole is formed in the reaction kettle and is communicated with the thickening device; the bottom of the thickening device is connected with the reaction kettle through a circulation pump; a filter rod is arranged in the thickening device; mother liquor which passes through the filter rod passes through a flowmeter and a pneumatic valve and is connected with a vacuum buffer tank after gathering; the upper part of the vacuum buffer tank is connected with a vacuum pump; and the bottom of the vacuum buffer tank is connected with a mother liquor storage tank. The rapid synthesis device can have the thick strengthening effect, greatly increases the synthetic ternary flow rate, accelerates the reaction speed and improves the yield at a synthesis stage, and thus increasing the yield and lowering the cost.

The invention provides a deep learning-based fiber laser sub-aperture coherent synthesis phase control method. According to the method, firstly, a non-Fourier plane light spot image is acquired as a training sample, and an analysis model is trained by the training sample. Secondly, a non-Fourier plane light spot image corresponding to a to-be-controlled optical fiber laser emission surface array light beam containing phase noise is acquired in real time in an optical fiber laser sub-aperture coherent synthesis system. Thirdly, the obtained non-Fourier plane light spot image is input into the trained analysis model for analysis. Fourthly, the relative phase information of each light beam in the optical fiber laser emission surface array light beam corresponding to the non-Fourier plane light spot image is obtained. Fifthly, the preliminary compensation is performed on the piston phase error of the optical fiber laser emission surface array light beam. Fifthly, the secondary compensationis performed on the piston phase error after preliminary compensation by using a random parallel gradient descent algorithm to ensure that all light beams in the optical fiber laser emission surfacearray light beam are effectively controlled to be output in the same phase. The method has the advantages of high control precision, high convergence speed, high control bandwidth and the like.

The invention discloses a synthesis process of novel water-based polyurethane (PU) light-cured resin. The synthesis process comprises the following steps: 1) synthesizing a high-rigidity and water emulsifiable light-cured pre-polymer PU1 containing a multifunctional group; 2) synthesizing a water-based polyurethane light-cured pre-polymer PU2 containing carbamate; mixing the two pre-polymers PU1 and PU2 at different ratios to form a pre-polymer which takes the PU1 as a core and the PU2 as a shell, so as to realize molecule-graded fusion; adding triethylamine to neutralize ion groups; adding water and emulsifying to form water-based polyurethane light-cured resin with different rigidity. By adopting the synthesis process disclosed by the invention, the disadvantages of toxin, volatility and the like of a traditional light-cured paint active diluting agent are overcome; the problem that a lot of solvents need to be added into a synthesis phase of common water-based light-cured resin is solved. By adjusting the ratio of the PU1 to the PU2, the resin with relatively high rigidity is prepared and applied to floor paint, the resin with moderate rigidity is applied to furniture paint and the soft resin is applied to synthetic leather; the production efficiency is greatly improved.

The invention relates to a method for preparing an aqueous-phase semiconductor nanocrystalline by adding an ammonia compound, in particular to a method for fast and effectively preparing the aqueous-phase semiconductor nanocrystalline, which belongs to the technical field of semiconductor nanocrystalline preparation and comprises the following steps: preparing a water-soluble II-VI group semiconductor nanocrystalline precursor by using sulfydryl micromolecules as a stabilizing agent and adding the simple ammonia compound to grow the nanocrystalline precursor by heating or at room temperature to obtain the aqueous-phase semiconductor nanocrystalline. Raw materials used in a compounding stage of a water-soluble II-VI group semiconductor nanocrystalline precursor solution are cadmium salt, zinc salt, mercuric salt, an ionic type tellurium source, an ionic type selenium source, an ionic type sulfur source and the sulfydryl micromolecules; and after the ammonia compound is added, the nanocrystalline precursor solution can be heated for growth or can be placed away from sunlight at room temperature for growth, and the aqueous-phase semiconductor nanocrystalline with different light-emitting colors can be obtained at different growing time. The invention can fast prepare the clear and transparent II-VI group semiconductor nanocrystalline which has higher light-emitting efficiency withlow energy consumption.

The invention discloses a high-efficient power amplifier for Internet of Vehicles communication. The high-efficient power amplifier comprises an input single-ended to differential power distribution phase shift network, a first self-biased three-stacked amplification network, a second self-biased three-stacked amplification network, a third self-biased three-stacked amplification network, a fourthself-biased three-stacked amplification network and an output differential to single-ended power synthesis phase shift network. According to the invention, the core architecture adopts the characteristics of high power and high gain of a self-biased three-stack amplification network formed by heterojunction bipolar transistors in a radio frequency microwave band; and meanwhile, the good parasiticparameter inhibition of the differential amplifier in the microwave frequency band is combined with the good power back-off efficiency characteristic of the Doherty amplification structure, so that the whole power amplifier obtains good high gain, high back-off efficiency and high power output capability.

The invention discloses a preparation method for butylated melamine-formaldehyde resin and relates to the technical field of resin synthesis. The preparation method comprises the first step of a reaction stage, the second step of a water removing stage, the third step of viscosity checking and the fourth step of a filtering stage. A one-step method is adopted, that is, at the synthesis stage, methanol, melamine, butyl alcohol and other raw materials are mixed and then put into a reaction kettle, reaction conditions are adjusted through magnesium carbonate and phthalic anhydride, hydroxymethylation reaction, condensation polymerization and etherification reaction are carried out at the same time, and the reaction technology is simplified; by carrying out water removing and distilling on reactants, side products and the raw materials are recycled, the side products can be used for methanol items of the same factory, and therefore the environment is protected, and the production cost is reduced.

The invention relates to a human mesenchymal stem cell in-vitro rapid proliferation adjuvant used to solve the problem of poor cell amplification efficiency of human mesenchymal stem cell culture. The human mesenchymal stem cell culture adjuvant comprises at least an antioxidant and a second type fibroblast growth factor (FGF-2). Thereby, after the adjuvant is added into a medium containing human mesenchymal stem cells for culture in normoxic environment (with the oxygen partial pressure being about 21%), phenomena such as rapid cell division, increase of cell cycle period synthesis phase proportion, reduction of aging, improvement of the differentiation potential, and the like, the human mesenchymal stem cell in-vitro rapid proliferation adjuvant can not only rapidly expand the human mesenchymal stem cells and obtain the growth factor, can still keep the more functional characteristic of the stem cells, and can be used for the purposes of human mesenchymal stem cell culture and amplification.

A nucleic amplifier is provided to reduce an amplification efficiency drop even with a short cycle time. In the nucleic amplifier, the denaturation phase of moving and retaining a liquid droplet in a first region of a container heated to a denaturation temperature of a target nucleic acid, and the synthesis phase of moving and retaining the liquid droplet in a second region of the container different from the first region are repeated in multiple cycles. The liquid droplet contains a fluorescently labeled probe. The fluorescently labeled probe contains a minor groove binder molecule.

The invention relates to gene synthesis in molecular biology, mainly relates to a bioluminescent reporter gene for monitoring a DNA (Deoxyribonucleic Acid) synthesis phase, and also relates to application of the gene to anti-tumor medicament screening. According to the invention, a plasmid PBS (pBluescript) containing a full-length human cyclinA2 gene is taken as a template, primers are designed on two ends of the cyclinA2 gene, cDNA (Complementary DNA) full length of the cyclinA2 is amplified and cloned to an end 5' of a Luc gene of a pGL3-control vector to form an eukaryon recombinant expression vector, namly pGL3-CYCA-Luc, which is capable of expressing fusion protein. The vector can express the fusion protein CYCA-Luc after being transfected into a tumor cell. In-vitro experiments show that after being degraded through an ubiquitination dependency pathway, the fusion protein changes in a cell cycle dependency manner and can be used for monitoring the action effect of a specific anti-tumor medicament of a phase S. The invention plays an important role in the fields of screening the anti-tumor medicaments specific to the phase S, and the like.