11results about How to "Reduce conversion" patented technology

The application provides a method for inducing poly-podophylli rhizoma by using clump buds, comprising the following steps: S1, cutting stem segments from a podophylli rhizoma mother plant, soaking and cleaning to obtain explants; S2, disinfecting and cleaning the explants, inoculating into a clump bud induction medium to obtain podophylli rhizoma clump buds; S3, inoculating the clump buds into doubling liquid I, washing with a liquid clump bud induction medium after culture, and then transferring into doubling liquid II; S4, taking out the clump buds, cleaning, inoculating into a clump bud induction medium, and then inoculating into a bud proliferation medium; S5, waiting until 1-2 cm, screening out potential mutant strains through phenotypes, inoculating into the bud proliferation medium for subculture, and obtaining mutant plants; and S6, rooting culture of the mutant plants, and after root systems grow, planting and raising seedlings, and then poly-podophylli rhizoma plants are obtained. In the research, suitable concentration of colchicine is used for induction treatment twice, and through stage concentration switching and intermittent recovery strategies, the poly-ploid induction efficiency and explant survival are effectively considered.

The utility model discloses a kind of drilling grouting integrated devices, including mobile chassis;Support frame, is fixed on mobile chassis;First guide rail, rotatably connected in one side of support frame, and first guide rail is connected with mounting seat by first lifting mechanism;Drilling mechanism, is installed on mounting seat;Angle adjusting mechanism, is arranged between support frame and first guide rail, for driving first guide rail rotation relative to support frame to adjust drilling angle;Second guide rail, is installed in one side of support frame, and at least one clamping mechanism is provided on second guide rail, and clamping mechanism is slidably connected with second guide rail by second lifting mechanism;Grouting pipe, can be clamped by clamping mechanism, clamping mechanism is driven along second guide rail to lift under second lifting mechanism, drives grouting pipe to carry out insertion or pull-out action;Advantage is to be able to greatly improve construction efficiency and construction effect, and grouting angle can be flexibly adjusted to adapt to complex geological conditions.

The utility model relates to the technical field of thin juice permeation, and particularly discloses a squeezer outlet thin juice permeation structure which comprises a motor, a centrifugal pump body, a juice inlet pipe, a discharging pipe, an overflow box feeding box body and an overflow box discharging box body, the motor is in driving connection with the centrifugal pump body, a juice inlet is formed in the side, away from the motor, of the centrifugal pump body, and a juice outlet is formed in the side, away from the motor, of the centrifugal pump body. The juice inlet is communicated with the juice inlet pipe, a juice outlet is formed in the upper end of the centrifugal pump body, and the juice outlet is connected with one end of the discharging pipe; a feeding port is formed in the upper end of the overflow box feeding box body, a feeding pipe is arranged in the overflow box feeding box body, the upper end of the feeding pipe is connected with the feeding port, and the lower end of the feeding pipe extends to the position away from the bottom of the overflow box feeding box body by a preset distance. A discharging port is formed in the side, away from the overflow box feeding box body, of the overflow box discharging box body, and the upper portion of the overflow box discharging box body is communicated with the upper portion of the overflow box feeding box body.

The invention discloses a bacillus licheniformis recombinant strain with high yield of L-cysteine, and belongs to the technical field of synthetic biology and microbial metabolism engineering. The cysteine synthesis flux is enhanced through multiple knockout and combined overexpression. An efficient engineering strain is constructed by knocking out a serine hydroxymethyltransferase coding gene glyA and an L-serine ammonolysis enzyme coding gene sdaAA of a serine catabolism key pathway, knocking out a cysteine catabolism gene metC and combining gene overexpression to introduce a feedback inhibition removal mutant cysEf and a transporter eamA, and the efficient engineering strain is used for preparing a recombinant strain. Finally, the yield of the L-cysteine reaches 1.075 g / L in shake flask fermentation (the conversion rate is 18.69%), and the application potential of the bacillus licheniformis in sulfur metabolism engineering is highlighted.

The utility model discloses an overlapped assembly type concrete anti-collision guardrail, and belongs to the field of road and bridge engineering. The guardrail is composed of two oppositely-arranged prefabricated anti-collision guardrail panels, a main beam bridge deck and the like, various steel bars are pre-embedded in the prefabricated panels, angle steel is pre-embedded on the outer side of the bottom and connected through snake-shaped connecting steel bars, vertical and bottom side stress main bars are welded to the angle steel, the angle steel is welded to a pre-embedded steel plate of the main beam bridge deck, and stiffening ribs are arranged. Compensation shrinkage concrete is poured in gaps between the panels, and reserved pipelines, waterproof steel bar reserved holes and rabbets are further arranged. According to the guardrail, a traditional formwork is replaced by the standardized prefabricated panel, the problems that the formwork is complex to install and prone to slurry leakage are solved, and standardized production of the prefabricated panel is achieved; rigid is enhanced through a reasonable connecting structure, all parts form a whole, meanwhile, it is guaranteed that new concrete and old concrete are tightly combined, water seepage is prevented, the construction efficiency and using performance of the bridge anti-collision guardrail are effectively improved, and the requirement for modern bridge industrial construction is met.

The invention discloses a heat storage-heat and power cogeneration device and method based on thermal electron and capacitor integrated energy storage and transduction, and the device comprises a heat storage body, and a thermal electron emission unit and a capacitor energy storage unit which are located at the inner periphery of the heat storage body. The thermionic emission unit comprises a thermionic positive electrode located on the inner circumferential wall of the heat storage body and a negative electrode located on the inner circumference of the thermionic positive electrode, the capacitive energy storage unit comprises a negative electrode and a capacitive positive electrode located on the inner circumference of the negative electrode, and the thermionic emission unit and the capacitive energy storage unit share the same negative electrode. The thermal electron emission effect and the capacitance electricity storage are designed to be of an integrated structure and share the same negative electrode, heat storage, thermoelectric conversion and electricity storage are coupled into the same physical process, the structure is simple and compact, and the purposes of long-time large-capacity storage-discharge / heat with high energy density, high power density and transient response are achieved.

This invention discloses a method for reducing the byproduct phenazine in RT-modified condensation solution. Tetramethylammonium hydroxide, aniline, nitrobenzene, and ammonia-modified activated carbon are introduced into a condensation reactor. Tetramethylammonium hydroxide catalyzes the condensation of aniline and nitrobenzene to obtain a condensation solution. The ammonia-modified activated carbon and the condensation solution are separated. The ammonia-modified activated carbon is then used in the condensation reaction. The condensation solution is then catalyzed by hydrogenation to prepare RT-modified condensation solution. This invention significantly reduces the formation of the byproduct phenazine in the condensation reaction by using ammonia-modified activated carbon, improves the selectivity of the condensation reaction, reduces the absorption of carbon dioxide from the air by the system materials, slows down the increase of tetramethyl carbonate, extends the catalytic life of tetramethylammonium hydroxide, saves raw material consumption, and reduces raw material costs, showing promising application prospects.

The present application relates to the chemical technology field, disclose a kind of recycling method and application of 4-acetyloxy butyric acid methyl ester material.The method comprises: (1) in the presence of sodium methoxide, the raw material containing γ-butyrolactone and 4-acetyloxy butyric acid methyl ester and methyl acetate are made to carry out acylation reaction, while azeotropic distillation is carried out, obtain the dry material containing α-acetyl-γ-butyrolactone sodium salt;(2) the dry material is extracted after being handled and separated, obtain α-acetyl-γ-butyrolactone crude product;(3) the crude product is subjected to vacuum rectification, separate out γ-butyrolactone and 4-acetyloxy butyric acid methyl ester mixture, obtain α-acetyl-γ-butyrolactone fine product.The method fully recycles 4-acetyloxy butyric acid methyl ester produced by α-acetyl-γ-butyrolactone, reduces waste liquid disposal amount;Avoid 4-acetyloxy butyric acid methyl ester and γ-butyrolactone separation, reduce energy loss;Prepared α-acetyl-γ-butyrolactone has higher yield and purity.

This invention provides a solid-phase chemical cleaner for oil-based drilling fluids, comprising a long-chain alkyl polyamine compound. The solid-phase chemical cleaner for oil-based drilling fluids provided by this invention exhibits high surface activity; its hydrophilic portion preferentially adsorbs onto the surface of drill cuttings, improving the oil wettability of the drill cuttings surface, thereby improving the drilling fluid flow pattern. This facilitates timely removal using high-mesh vibrating screens, reducing the conversion of coarse particles to fine particles and slowing the generation and accumulation of submicron solid phases. Furthermore, its long molecular chain and charge density provide a strong adsorption and aggregation effect on fine solid particles, causing small particles to agglomerate into larger particles, which is beneficial for removal by solids control equipment and helps improve the separation efficiency of solids control equipment. This invention also provides a method for preparing and applying the solid-phase chemical cleaner for oil-based drilling fluids.

The invention discloses a data transmission method. The method comprises the steps that first equipment sends a first message to a first terminal; wherein the first message is used for establishing one or more first sessions; the first session comprises one or more radio bearers used for transmitting artificial intelligence or machine learning data of any size; the radio bearer of the first session is identified by adopting an identifier of an artificial intelligence or machine learning model; and the first terminal directly accesses artificial intelligence or machine learning data training or reasoning corresponding to the first identifier in the first equipment side through the radio bearer corresponding to the first identifier. The first terminal receives the first message and sends a second message to the first device; wherein the second message is used for representing that the establishment of the first session is completed; the first device receives a second message. The invention further discloses a first device, a first terminal, a second device, a fourth device, a computer readable storage medium and a computer program product.

This invention relates to the field of secondary battery technology and discloses a wound battery. The negative electrode sheet contains silicon-based material with a silicon content of ≥3% by mass. The negative electrode sheet has multiple negative electrode tabs. The arc segment of the positive electrode sheet has a first groove. The arc segment of the negative electrode sheet has a first concave-convex structure including a first protrusion and a first recess, and the projection of the first protrusion is at least partially located within the first groove. This invention reduces internal resistance and uniforms current distribution through the multi-tab structure; mitigates heat generation from lithium desorption through the first groove; releases expansion stress through the first concave-convex structure; and effectively suppresses heat accumulation in the arc region by forming a heat dissipation space through the cooperation of the first protrusion and the first groove, thereby improving the rate performance and high-temperature cycle performance of the battery.