22results about How to "Reduce oxidation rate" patented technology

The invention discloses an oligopeptide from undaria pinnatifida and application thereof. The amino acid sequence of the oligopeptide is YRKD, and the molecular weight is 580.63 g / mol. The polypeptide is identified from undaria pinnatifida through a high performance liquid chromatography technology for the first time, and an unreported oligopeptide capable of inhibiting tyrosinase and cooperating with vitamin C to synergistically inhibit tyrosinase is screened out. The oligopeptide derived from undaria pinnatifida is synthesized by a solid phase method, has the characteristics of safety, no toxicity, good water solubility and good stability, and is combined with vitamin C to generate a synergistic effect and synergistically increase the inhibition effect on tyrosinase, so that the oligopeptide can achieve a better tyrosinase inhibition effect at a lower and more stable concentration; the use concentration of the oligopeptide can be greatly reduced, the stability is enhanced, and the oligopeptide can be widely applied to preparation of cosmetics, medicines, health-care products or food additives, and has important economic value and social significance.

This invention relates to the field of polymer material synthesis technology, specifically to a modified PVB resin and its preparation method. The invention introduces a fluorinated acetal monoaldehyde derivative containing fluorine into the PVB resin. This derivative is mixed with n-butyraldehyde and glyoxal, thereby undergoing an acetalization reaction with the 1,3-o-diol structure of the PVB molecular chain, incorporating the fluorinated side link into the PVB molecular chain. Utilizing the high electronegativity and high C-F bond energy of fluorine atoms, it shields against the intrusion of external corrosive media, inhibits oxidative yellowing, and improves weather resistance. Furthermore, the invention introduces glyoxal as a crosslinking agent, containing dialdehyde groups, which can react between adjacent polyvinyl alcohol segments, causing slight crosslinking between the originally linear PVB resin segments, improving the resin's shielding performance, further reducing the intrusion of external corrosive media, and enhancing the stability of the PVB resin.

The application provides a wine aging method, and belongs to the technical field of wine brewing, which comprises the following steps: adjusting the sulfur content of separated base wine to obtain base wine with adjusted sulfur content; sterilizing oak barrels by steam fumigation; filling the base wine with adjusted sulfur content into the sterilized oak barrels to obtain full oak barrels; aging the full oak barrels, the humidity of the aging environment is 65RH%-75RH%, and the temperature of the aging is adjusted according to the season, and the full oak barrels are regularly adjusted in sulfur content during the aging process. The wine aging method provided by the application can regularly adjust the sulfur content of the wine liquid once every 28 days during the aging process, accurately supplement the content of key components in the wine liquid which is reduced due to natural consumption, and avoid the concentration of the components being lower than the appropriate interval of aging.

This invention discloses a method for preparing an edible king oyster mushroom fiber matrix based on polypeptide cross-linking, belonging to the field of food processing technology. The invention uses soybean polypeptides and king oyster mushroom dietary fiber as the main raw materials, and generates a fiber mesh matrix through bio-enzymatic cross-linking. The matrix is ​​further adsorbed with one or more of the high-freezing-point natural plant oils such as cocoa butter, shea butter, and red palm oil, and further shaped after the addition of food additives, thereby preparing an artificial fat with the morphology and taste of natural meat fat layer.

The utility model discloses a kind of self-adapting caliber adjustment oil carbon detector, including oil tank interface pedestal, sliding arc piece set, movable arc piece, positioning member, sensor and electronic information transmission module;More than three groups of sliding arc piece set are evenly distributed in oil tank interface pedestal along the circumference of oil tank interface pedestal, and sliding arc piece set slides along the radial direction of oil tank interface pedestal;Movable arc piece is inserted in the gap between adjacent sliding arc piece set, movable arc piece can slide along the gap between sliding arc piece set, cooperate with sliding arc piece set to realize caliber adjustment, and realize locking positioning by the positioning member located in the inboard of sliding arc piece set;Sensor is located in oil tank, and is electrically connected with the electronic information transmission module outside oil tank interface pedestal by wire.This utility model can adjust caliber, solve the problem that existing fixed caliber oil carbon table is poor in adaptability and high in procurement cost.

This application provides a quenched and tempered steel plate and its production method. The quenched and tempered steel plate comprises the following components by mass percentage: C: 0.15–0.20%; Si: 0.20–0.40%; Mn: 1.20–1.50%; Cr: 0.20–0.50%; Ni: 0.10–0.20%; Nb: 0.020–0.040%; Ti: 0.010–0.040%; Mo: 0.30–0.50%; B: 0.0010–0.0025%; P≤0.015%, S≤0.004%; N≤0.004%, Als: 0.010–0.060%, with the remainder being Fe and unavoidable impurities. This application manufactures a thick, high-strength quenched and tempered steel plate with high surface quality by adjusting the elemental composition and content of the quenched and tempered steel plate, specifically by adding certain amounts of Ni, Cr, and B.

This invention belongs to the fields of powder metallurgy and materials science and technology, specifically disclosing a preparation process for a high-wear-resistant WC-based composite material. The process involves preparing WC powder, second-phase powder, and graphene material; adding the graphene material to a dispersion medium and performing ultrasonic dispersion; mixing the graphene dispersion with the WC powder and second-phase powder and ball milling; drying the mixture using a vacuum rotary evaporation drying process; and densifying it using a hot-pressing sintering process. This invention enables the WC-based composite material to simultaneously achieve high hardness and high fracture toughness; effectively inhibits oxidative wear of the WC-based composite material at high temperatures, improving its high-temperature wear resistance; and achieves uniform and stable dispersion of the graphene reinforcing phase in the WC matrix, avoiding agglomeration, thereby fully utilizing its strengthening and lubrication effects. The composite material prepared by this invention is particularly suitable for use as high-speed cutting tools, high-temperature molds, and high-temperature moving parts in aerospace applications, and has broad application prospects.

This invention provides a tidal flow constructed wetland for treating rural domestic sewage, comprising a concrete impermeable layer disposed at the bottom and around the perimeter of the pool. Within the concrete impermeable layer, from bottom to top, are a uniformly distributed water pipe layer, a first filler layer, a second filler layer, a third filler layer, and a covering layer. One end of the uniformly distributed water pipe layer has an inlet pipe, and the bottom of the third filler layer has an outlet pipe. An aeration pipe is also located within the third filler layer. Wetland plants, preferably local dominant wetland plant species, are planted on the covering layer. The first filler layer is a mixture of slow-release carbon source and alkali source, the second filler layer is a mixture of sulfur and iron, the third filler layer is a filter adsorption filler, and the covering layer is gravel filler. This invention offers advantages in treating rural domestic sewage, including good purification effect, simultaneous nitrogen and phosphorus removal, siphon self-control, low infrastructure and operating costs, and convenient maintenance.

The utility model relates to the technical field of plastic molds, in particular to a quick connector mold for producing a vehicle-mounted charging plastic shell. The plastic mold comprises a first plastic mold body, a second plastic mold body, four guide columns, four guide grooves and two mold grooves, the guide columns are connected with the inner walls of the guide grooves in a sliding mode, lubricating devices are arranged on the two sides of the first plastic mold body, and each lubricating device comprises two supporting plates. And the two supporting plates are fixedly connected with the two sides of a first plastic mold correspondingly, a storage box is fixedly connected to the surfaces of the supporting plates, two hollow pipes are connected into the storage box in a communicating mode, and sponge rings are fixedly connected to the arc surfaces of the guide columns. The problems that the production efficiency is affected, abrasion is aggravated and the precision of the mold is affected due to the fact that the mold opening and closing actions and the like of the mold cannot be smoothly carried out due to clamping stagnation caused by overlarge friction force when the mold is used for a long time and the relative movement of the guide column and the guide groove are solved.

The invention provides a sterilization method and application of sporoderm-broken ganoderma lucidum spore powder, and belongs to the technical field of health food and medicine processing. The sterilization method comprises the following steps: pretreating wall-broken ganoderma lucidum spore powder through drying and low-temperature ultrasound; after sealing and packaging, carrying out two-section type hot-pressing sterilization treatment; and after sterilization, supercritical CO2 treatment is adopted for post-treatment. According to the invention, low-temperature vacuum drying is matched with low-temperature ultrasonic treatment to realize moisture control and uniform distribution; after sealed packaging, two-section gradient hot-pressing sterilization is adopted, and sterilization thoroughness and thermosensitive component protection are both considered; and finally, residual microorganisms are complementarily killed through supercritical CO2 aftertreatment, oxidized grease is dissolved and removed to reduce the acid value and the peroxide value, meanwhile, oxygen is replaced to delay subsequent oxidation, and no solvent is left. The method is simple and convenient to operate, feasible in industrialization and suitable for processing and production of high-quality health-care foods and medicines.

The application relates to an automobile battery intelligent charger, and belongs to the technical field of automobile battery chargers. The charger comprises a charging pile device, a charging pile shell is externally mounted on the charging pile device, a switch button is mounted on the front end outer wall of the charging pile shell, a ventilation opening is mounted on one side of the charging pile shell, a supporting rod is mounted on the inner wall of one side of the charging pile shell, a wire box is sleeved on the outer surface of the supporting rod, and an electric box is mounted on the bottom inner wall of the charging pile shell. The automobile battery intelligent charger is stored downwards through the charging gun, rainwater and dirt can be naturally dropped, no additional waterproof accessories are needed, maintenance cost is reduced, outdoor use is more stable and durable, double motors are synchronously linked, door opening, wire laying, cleaning and lifting are completed through one key, the wire cable is not prone to damage, an automatic cleaning and dust suction assembly is arranged inside, the gun head is cleaned when being homed, gap dust is completely removed, manual maintenance is reduced, and the service life of the equipment is prolonged.

This invention relates to a method for enhancing the stirring intensity during vanadium extraction, belonging to the field of steel pretreatment. The method includes the following three steps: first, vanadium-containing molten iron is added to a converter; then, a top-and-bottom blowing process is used for smelting; coolant is added according to the composition and temperature at the smelting endpoint; finally, semi-steel is removed from the lance at the smelting endpoint. The top-blown gas is an oxygen-nitrogen mixture, and the total flow rate of the oxygen-nitrogen mixture is 31,000~35,000 Nm³. 3 / h; the oxygen consumption per ton of iron, the top blowing lance position, and the nitrogen consumption per ton of iron are controlled in segments according to the blowing period; the bottom blowing gas is nitrogen, and the nitrogen supply intensity is controlled in segments according to the blowing period. This invention significantly enhances the stirring intensity of the molten pool without significantly increasing the temperature rise rate through the synergistic effect of the high-flow-rate oxygen-nitrogen mixed gas from the top and the variable-flow-rate nitrogen from the bottom, thereby shortening the mixing time and enhancing the slag-metal reaction, further increasing the vanadium oxidation amount and further reducing the TFe content in the vanadium slag.

The invention relates to the technical field of aluminum-based composite material preparation, in particular to a ceramic reinforced aluminum-based workpiece and a preparation method. The ceramic reinforced aluminum-based workpiece is prepared by the method. The method comprises the steps that a forming die is assembled and filled with aluminum-based composite powder; sintering the forming die filled with the aluminum-based composite powder in an inert atmosphere to obtain a sintered green body; performing die forging treatment on the sintered green body to obtain a prefabricated green body; and after the prefabricated blank is machined to the size of a finished product, the prefabricated blank is sequentially subjected to solution treatment and aging treatment, and the ceramic reinforced aluminum-based workpiece is obtained. By means of the method, the ceramic reinforced aluminum-based workpiece with the large length-diameter ratio can be prepared, and the problems that cracks are generated when a formed blank is not separated from the female die, and layering and fragmentation are generated in the demolding process are solved.

The invention relates to the field of high polymer materials, and discloses an antibacterial medical silica gel suction nozzle cover and a preparation method thereof, the antibacterial medical silica gel suction nozzle cover comprises silicone rubber, modified nano titanium dioxide, modified multi-walled carbon nanotubes, a vulcanizing agent and a lubricant; the modified nano titanium dioxide is prepared by the following steps: reacting 1H-benzimidazole-2-mercaptan with 2-chloro-N-(3, 4-dichlorophenyl) acetamide, then reacting with 3-chloropropyltriethoxysilane to prepare a functional silane coupling agent, and grafting the functional silane coupling agent on the surface of nano titanium dioxide. The modified multi-walled carbon nanotube is prepared by grafting a quaternized maleopimaric acid derivative on the surface of a functionalized multi-walled carbon nanotube subjected to acid treatment and polyethyleneimine surface modification; the quaternized maleopimaric acid derivative is prepared by sequentially reacting maleopimaric acid with N, N-dimethylethylenediamine and bromoethane, and the silica gel suction nozzle cover prepared by the preparation method disclosed by the invention has good mechanical properties, thermal oxidative aging resistance, antibacterial property and antibacterial long-acting property.

This invention relates to a chip manufacturing process for improving back-bearing during unidirectional product dicing, specifically in the field of semiconductor power device chip processing. The invention employs two different specially formulated etching acids to reduce the etching rate of the N-side while maintaining the normal etching rate of the P-side. This method not only avoids back-bearing during dicing but also releases the stress generated during wafer manufacturing. In today's increasingly competitive semiconductor market, possessing top-tier semiconductor manufacturing technology and ensuring product quality are essential tools for every semiconductor discrete device manufacturer. Therefore, researching a high-reliability power device manufacturing process is of great significance in ensuring the capabilities and reliability of semiconductor discrete devices.

The utility model relates to the technical field of modified atmosphere packaging preservation, and discloses a handled meat modified atmosphere packaging preservation device which comprises a workbench, the right side of the top of the workbench is rotationally connected with a cover plate, the left side of the bottom of the cover plate is fixedly connected with a first heat sealing piece, and the right side of the top of the workbench is fixedly connected with a second heat sealing piece. A packaging bag is arranged in the middle of the right side of the top end of the workbench, a sealing sticker is fixedly connected to the right side of the packaging bag, an air storage tank is fixedly connected to the front end of the bottom of the inner side of the workbench, the rear side of the air storage tank communicates with a vacuum pipeline, and a vacuum pump is fixedly connected to the middle of the vacuum pipeline. According to the utility model, sealing is carried out through the sealing paste, then the packaging bag is vacuumized through the vacuum pump, fresh-keeping gas is pumped into the packaging bag through the exhaust pump after vacuumizing, and finally, the heat sealing sheet I and the heat sealing sheet II are attached to each other, so that sealing treatment is realized, the oxidation speed of the stewed meat can be slowed down, and the breeding of aerobic microorganisms can be inhibited.

This utility model discloses a spherical elbow for use in heavy medium coal preparation pipelines. Belonging to the field of mechanical engineering technology, the elbow includes a spherical body. A main partition plate is welded to the inner surfaces of both sides of the spherical body. The main partition plate is inclined at 45 degrees to the lower outlet and side outlet. A buffer plate is welded to the inner surface of the lower side of the spherical body. A side guide plate is welded to the upper surface of the buffer plate. The side guide plate is inclined at 30 degrees to the buffer plate. Using a spherical shape as the main body shape of the elbow offers advantages over traditional tubular shapes. The arc-shaped inner wall effectively buffers the water flow, preventing direct impact on easily worn parts. The service life of the pipeline is generally 2-3 times that of a tubular elbow. Furthermore, by setting the main partition plate, buffer plate, and side guide plate in the middle, the main partition plate, with the assistance of the buffer plate and side guide plate, divides the water flow from the lower inlet into two spatial positions.

The utility model relates to a kind of oil discharge devices of tank-type oil transport vehicle, belong to tank-type oil transport vehicle oil discharge technical field, including oil discharge tank and mounting bracket, the oil discharge tank inside is provided with the oil discharge component for sufficient filtration oil product;The oil discharge component includes the oil pipe fixedly connected in the top of oil discharge tank, the inner top wall of oil discharge tank is fixedly connected with the oil collecting tank, the bottom of oil collecting tank is fixedly connected with the oil injection pipe, the inboard of oil discharge tank is fixedly connected with first filter frame and second filter frame, the inboard of first filter frame is fixedly connected with coarse filter screen, the inboard of second filter frame is fixedly connected with fine filter screen, the bottom of oil discharge tank is fixedly connected with oil outlet pipe.The oil discharge device of the tank-type oil transport vehicle, by setting oil discharge component, reaches the effect of sufficient filtration oil product, and then sufficiently removes the impurity in oil product, to reduce the oxidation and metamorphic speed of oil product, improve the performance of oil product.

The present application relates to the technical field of edible oil storage, in particular to a kind of edible oil nitrogen preservation equipment and method, the top center of oil tank is provided with gas injection pipe, the bottom of gas injection pipe is communicated with shunt pipe, shunt pipe and gas injection pipe are vertically distributed, a plurality of aeration heads are installed at the top of shunt pipe, and the nitrogen gas pumped in is cut into micron nitrogen bubbles;At least one ultrasonic probe is installed on the side wall of oil tank, and the ultrasonic probe is located above the aeration head, and micron nitrogen bubbles are decomposed into micro-nano nitrogen bubbles.The micron nitrogen bubbles are rotated upward, and most of the dissolved oxygen is brought out by cooperating with ultrasonic treatment to slow down the oxidation speed of edible oil;By the cooperation of L-ascorbic palmitate and phytic acid, and the strict limitation of the proportion of L-ascorbic palmitate, the storage time of edible oil can be greatly extended, and selective addition should be selected according to market demand.

The application provides a coil device for generating plasma in a semiconductor process equipment and the semiconductor process equipment, which comprises a coil structure and a fixing and cooling assembly for fixing and cooling the coil structure, wherein the fixing and cooling assembly comprises a fixing body made of an insulating material, a cooling space is formed in the fixing body, and the coil structure is fixedly arranged in the cooling space; an air inlet and an air outlet are arranged on the fixing body and are communicated with the cooling space, the air inlet is used for conveying cooling gas into the cooling space, the air outlet is used for discharging the cooling gas in the cooling space, and a turbulence structure is further arranged in the cooling space to change the flowing direction of the gas in the cooling space and improve the gas distribution uniformity in the cooling space. The coil device and the semiconductor process equipment provided by the application can improve the cooling efficiency and the cooling uniformity of the coil, reduce the oxidation speed of the coil, and thus prolong the service life of the coil.

The invention relates to the technical field of circuit connectors, and discloses a moisture-resistant circuit connector which comprises a plug and a socket, the outer wall of the plug is connected with a first shell, the outer wall of the socket is connected with a second shell, and the second shell can be inserted into the inner wall of the first shell to achieve butt joint of the plug and the socket; a sealing assembly is arranged in the first shell and comprises a liquid bag filled with filling liquid and two liquid boxes. And a protection assembly is arranged in the first shell. Through the arrangement of the protection assembly, the liquid box can convey the filling liquid into the liquid bag when the plug is in butt joint with the socket, the liquid bag can fill the gap between the first shell and the second shell after expansion, a good flexible sealing effect is further achieved, and in the subsequent operation process of the plug and the socket, moisture cannot enter the first shell, so that the safety of the plug and the socket is improved. Therefore, a good moisture-proof effect is achieved.

This invention discloses a core-shell Sm-Fe-N alloy and its preparation method, wherein the core of the core-shell Sm-Fe-N alloy is Sm2Fe. 17 N b The outer shell is Sm 2( Fe a M 1‑a ) 17 N b M is selected from at least one of Mn, Co, Cr, or Ti, where 0.5 ≤ a ≤ 0.95 and 2.5 ≤ b ≤ 3.5. This invention first prepares Sm₂Fe using physical or chemical methods. 17 The alloy is a mixture of M-O or Sm2Fe with a surface coating of M-O. 17 The alloy is further reduced and diffused to form Sm2Fe 17 A thin Sm-Fe-M layer is formed on the alloy surface, followed by nitriding. This invention yields a high-heat-resistant and high-oxidation-resistant samarium-iron-nitrogen core-shell alloy through surface modification. By introducing metallic M into the outer shell layer, it overcomes the problem of reduced saturation magnetization caused by overall doping with metallic M, and also improves the Sm2Fe... 17 Magnetic properties of N3 at high temperatures.