30results about How to "Keep alive" patented technology

This utility model discloses a staged purification device for electrolytic hydrogen production, including a purification tank. The purification tank contains a first cylinder and a second cylinder. Several dehydration units are arranged sequentially from bottom to top within the internal region of the first cylinder. A catalytic deoxygenation unit is arranged between two adjacent dehydration units in the region between the first and second cylinders. A heating device is arranged in the region between the second cylinder and the purification tank. An air inlet is located at the bottom of the purification tank. Several first connecting ports and several second connecting ports are provided on the wall of the first cylinder. The first connecting ports connect the catalytic deoxygenation unit to the dehydration unit below it, and the second connecting ports connect the catalytic deoxygenation unit to the dehydration unit above it. A dual-outlet air pipe is located at the top of the purification tank. This utility model can perform multi-stage continuous deoxygenation and dehydration treatment on hydrogen, effectively removing oxygen and water vapor mixed in with the hydrogen, thereby ensuring the purity of the final output hydrogen.

The invention discloses a silicon negative electrode active material which sequentially comprises a silicon-based material inner core, a flexible solid electrolyte or gel electrolyte middle layer and a carbon-coated outer layer from inside to outside, the flexible solid electrolyte or gel electrolyte middle layer comprises a conductive agent, and the conductive agent comprises a carbon nanotube. According to the silicon negative electrode active material, the surface of the silicon-based material is coated with the flexible solid-state or gel-state electrolyte, so that the volume change of the negative electrode active material in the charging and discharging process is effectively relieved, the electrolyte is isolated, the stability of the negative electrode active material is improved, and the negative electrode active material has relatively high reversible specific capacity and relatively high specific surface area; and excellent long cycle performance is shown.

This application discloses a trough fermentation system for lignite fermentation, including a fermentation trough and a heating device for heating the fermentation trough. A floor heating coil is installed at the bottom of the fermentation trough. The heating device supplies heat to the fermentation trough through the floor heating coil, providing different amounts of heat to the fermentation trough in the early, middle, and late stages of fermentation, respectively, so that the fermentation trough is in the first, second, and third stages. The gradient temperature control of this application can accurately meet the temperature requirements of different stages in the fermentation process, significantly improving fermentation efficiency, accelerating the fermentation process, significantly shortening the fermentation cycle, and reducing greenhouse gas emissions, thus offering environmental advantages.

The utility model provides an emulsifier adding device for emulsion explosive production, and belongs to the technical field of emulsion explosives. Comprising a base, an adding barrel is fixed to the base, a feeding pipe and a discharging pipe are installed at one end of the adding barrel, an air cylinder is fixed to the other end of the adding barrel, and a crankshaft of the air cylinder extends into the adding barrel and is connected with a piston; the feeding pipe and the discharging pipe extend into the base, the outer side of a port, extending into the base, of the feeding pipe is movably connected with a first membrane flap, the first membrane flap only allows a medium to be output from the port of the feeding pipe, the inner side of a port, extending into the base, of the discharging pipe is movably connected with a second membrane flap, and the second membrane flap only allows the medium to be output from the port of the discharging pipe. And the second membrane flap only allows the medium to be input into the port of the discharge pipe. According to the utility model, the emulsifier can be quantitatively added, the molecular chain of the emulsifier can be prevented from being damaged, the activity of the emulsifier is ensured, and the quality of the final emulsion matrix is further ensured.

The application discloses a kind of for sweat glucose concentration monitoring method, it is related to sweat monitoring field, comprising the following steps: step 1, enzyme-fixed chain conjugate synthesis: glucose dehydrogenase is reacted with bilirubin oxidase respectively with bifunctional crosslinking agent and is purified, obtain enzyme-crosslinking agent intermediate;It is clicked with azide modified DNA fixed chain chemistry reaction again, and after purification, obtain GDH-fixed chain and BOx-fixed chain conjugate;Step 2, preparation of circular DNA template: after annealing hybridization of phosphorylated template chain and primer chain, it is connected into ring by T4 DNA ligase;Step 3, rolling circle amplification self-assembly package enzyme DNA hydrogel;The present application uses super-flexible DNA hydrogel as flexible electrode material, realizes the efficient fixation and continuous stable catalysis of GDH and BOx, and constructs flexible sweat-based EBFC self-powered sensor as flexible bioelectrode, to realize continuous non-invasive blood glucose monitoring.

A kind of low-carbon cold region natural air admission aerobic fermentation tank device, including air inlet, fermentation tank, the upper portion of the fermentation tank is connected air inlet, air inlet outside has air inlet lip, air inlet inside has air guide pipeline, air guide pipeline inside is connected dust screen, air guide pipeline lower portion is connected air supplement pump, by preheating, the temperature of air admission is promoted to the suitable range of microorganism, improves the decomposition rate of organic matter;Preheating reduces the relative humidity of air, avoids material to be blocked due to excessive wet, and dry hot air promotes material loose, maintains porosity, ensures oxygen diffusion efficiency;By using tank heat preheating, energy self-sufficiency is realized, and operating cost is reduced;Heat production peak is preheated sufficiently, avoid overheating when heat production trough, reduce manual intervention, and carbon footprint is reduced.

The utility model discloses a kind of high-concentration hemicellulose wastewater treatment systems, it is related to high-concentration hemicellulose wastewater treatment technical field, including the adjusting pool, fenton reaction pool, fenton sedimentation tank, multistage hydrolysis acidification pool and lifting pool connected in order, the adjusting pool water inlet is connected with high-concentration hemicellulose wastewater pipeline, non-ferrous wastewater pipeline and acidic wastewater pipeline, adjusting pool and fenton reaction pool between being provided with dispensing room, and ferrous sulfate storage tank, hydrogen peroxide storage tank and PAM storage tank are provided in dispensing room, ferrous sulfate storage tank and hydrogen peroxide storage tank are connected with fenton reaction pool water inlet respectively, and PAM storage tank is connected with fenton reaction pool, fenton reaction pool is also connected with alkali tank, the fenton sedimentation tank bottom is provided with sludge pump, and the lifting pool water outlet is connected with polymeric ferric sulfate storage tank. Through pre-fenton system combination multistage anaerobic treatment unit realizes the efficient decomposition of hemicellulose, lignin and other refractory substances, and cooperates subsequent advanced treatment to ensure that effluent COD is stable and up to standard.

This invention discloses a bone repair scaffold material, its preparation method, and its application. The preparation method includes the following steps: preparation of a mineralized collagen core spinning solution; adding mangiferin to a PLGA electrospinning solution and stirring to obtain a shell spinning solution; and using the core spinning solution and the shell spinning solution, obtaining the bone repair scaffold material through coaxial electrospinning. In this invention, PLGA and mangiferin together form the shell of the scaffold structure, and the sustained release of mangiferin provides a guarantee for the anti-inflammatory and angiogenic effects of the scaffold material. Simultaneously, it simulates the fibrous structure of the bone matrix, achieving slow degradation of the core and achieving the goal of long-term promotion of bone repair.

The invention relates to the technical field of chemical catalysts, in particular to a catalyst for preparing 2-tert-butylhydroquinone and a preparation method and application thereof.The catalyst comprises a hierarchical pore H beta molecular sieve, active metal is loaded in a framework of the hierarchical pore H beta molecular sieve, and the active metal is one or more of La, Ce and Zn. The catalyst adopts the hierarchical pore H beta molecular sieve as a skeleton, so that the diffusion limitation of the traditional microporous molecular sieve can be effectively broken through, and the occurrence of side reactions is reduced while the intrinsic rate of the reaction is greatly improved. La, Ce and Zn active metals are introduced into a hierarchical pore H beta molecular sieve framework to form a high-activity catalytic center synergistic system, and the reaction process is enhanced. Compared with the traditional liquid acid catalyst and ion exchange resin, the catalyst has the characteristics of simple process, easiness in recovery, no pollution, good high-temperature stability, high catalytic activity, good selectivity and low cost, and solves the core problems of low activity, heavy pollution and high cost of the traditional catalyst.

This invention provides the application of lecithin in the preparation of drugs for the prevention and / or treatment of infertility, belonging to the field of biomedical preparation technology. Specifically, it relates to the application of lecithin in the preparation of drugs for the prevention and / or treatment of infertility, recurrent miscarriage, and / or uterine decidualization disorders. The lecithin can effectively reduce TNF-α levels in early pregnancy, improve uterine decidualization disorders, and increase endometrial receptivity, thereby increasing pregnancy rates and providing a new approach for the treatment of infertility and recurrent miscarriage.

The utility model discloses a kind of Chinese herbal medicine probiotic compound liquor for dispelling alcohol preparation device, belong to Chinese herbal medicine probiotic compound liquor for dispelling alcohol preparation device technical field, its technical scheme main points include storage component, the top of storage component is fixedly connected with filter component, the top of filter component is connected with stirring component, the top of storage component is fixedly connected with controller;The filter component includes frame, the left side and the right side of the inner wall of frame are all set with alignment slot, the inner wall of two alignment slots is all clamped with alignment block, can solve the mixing of most Chinese herbal medicine probiotic compound liquor for dispelling alcohol under existing condition, it can be necessary to add granular traditional chinese medicine inside preparation equipment, make it mix with liquid inside tank, after mixing is completed, liquid in tank inner wall needs to be moved to the inside of storage barrel, under the condition of movement, granular Chinese herbal medicine in liquid interior needs to be removed, thus lead to the problem of low efficiency.

This invention relates to a whitening and stain-removing toothpaste that effectively reduces attached pigments and its preparation method. The toothpaste comprises sorbitol, hydrated silica, polyethylene glycol-400, glycerin, niacinamide, sodium lauryl sulfate, sodium hexametaphosphate, sodium benzoate, cellulose gum, sodium phytate, flavoring, olaflu, xanthan gum, sodium saccharin, menthol, sodium bicarbonate, and water. This invention utilizes the temperature-sensitive thickening properties of cellulose gum and xanthan gum, combined with a staged, precise temperature-controlled feeding process. Sodium hexametaphosphate and sodium phytate are pre-dissolved in a high-temperature stage; xanthan gum and cellulose gum are added in a medium-temperature stage to form a colloidal thickening network; and finally, niacinamide and olaflu are added in a low-temperature stage, along with a post-curing treatment. This effectively solves the antagonistic problem between niacinamide, olaflu, sodium hexametaphosphate, and sodium phytate, achieving stable coexistence and synergistic effects of the various active ingredients. The resulting toothpaste effectively reduces pigment adhesion to the tooth surface, exhibiting good whitening and stain-removing effects and excellent stability during use.

This invention relates to the field of biodetection technology, disclosing a preservation solution, an adiponectin detection kit, its preparation method, and its application. The preservation solution comprises Tris, trehalose, Tween 20, sodium caseinate, PVP-10, Proclin-300, TX-100, surfactant S13, and glycine. This specific formulation effectively prevents quantum dot aggregation and maintains protein activity for a long time. The adiponectin detection kit is based on quantum dot immunofluorescence chromatography technology and includes components such as a sample pad, a release pad, and a nitrocellulose membrane. The release pad is simultaneously coated with quantum dot-labeled antibodies and unlabeled detection line antibodies, and the quantum dot-labeled antibodies are coupled in a cascade manner of "quantum dot-streptavidin-biotinylated antibody". This invention, through liquid dialysis linking technology and a unique release pad antibody premixing process, utilizes the signal amplification effect of the biotin system and the principle of homogeneous reaction, significantly improving the sensitivity, accuracy, and reagent stability of the detection.

This invention discloses a low-temperature sludge drying device and its application. The device includes a processing chamber, a heating assembly located on one side of the processing chamber, and several staggered sludge conveyor belts inside the processing chamber. Air channels are formed between two sludge conveyor belts. Several semi-circular air guide hoods are located on the side wall of the processing chamber, with openings at both ends corresponding to two adjacent air channels. A drying module is located at the bottom air inlet of the air guide hood. This invention utilizes the circulating airflow formed by the staggered conveyor belts and air guide hoods to achieve uniform low-temperature drying of sludge. The drying module further removes moisture, allowing sludge of different types and moisture contents to be processed to a moisture content of 30-40%, meeting the requirements for direct aerobic fermentation while maintaining the activity of microorganisms in the sludge. Compared with traditional condensation drying methods, this device has a simplified structure, low operating energy consumption, and is suitable for continuous industrial operation.

This utility model discloses a cranial flap resuscitation and perfusion device, including a workbench with a platform plate fixedly connected to the top of the workbench; a perfusion mechanism is provided on the top of the platform plate, and a sealing component is provided inside the perfusion mechanism; wherein, the perfusion mechanism includes an insulated box fixedly installed on one side of the top of the platform plate, and an inner liner is embedded in the inner side of the insulated box, and a liquid addition pipe is fixedly connected between the top of the insulated box and the inner liner, thereby enabling precise control of the temperature, flow rate and pressure of the perfusion fluid, simulating the human physiological environment, providing good resuscitation conditions for the isolated cranial flap, effectively maintaining the activity of cranial flap bone cells, improving the survival rate of cranial flap after reimplantation, reducing the incidence of postoperative complications such as bone flap necrosis and infection, greatly improving the efficiency of cranial flap repair and cleaning, and reducing the workload of staff.

The utility model belongs to the technical field of grinding equipment discloses a kind of stick type grinding device including grinding assembly driven by motor, the grinding assembly is located in funnel, the funnel is fixed in the lateral wall of machine case, the motor is located in machine case, screen above the discharge port of funnel;Wherein:The grinding assembly includes two circular support plates, the outer wall of the two support plates is evenly distributed with at least three grinding rods, the cross section of the grinding rod is rectangle, the grinding rod has hollow inner chamber, and the inner chamber is filled with coolant.The utility model due to the structure, effectively guarantee grinding product activity, facilitate to replace grinding assembly and be conducive to cleaning.

This disclosure relates to the field of cryopreservation technology for biological samples, and in particular to a cryopreservation tube assembly, comprising a cap, a tube body, and a carrier. The cap is detachably connected to the tube body, and the carrier is connected to the cap. The carrier has a bearing surface for holding a target sample, and the bearing surface is provided with a through hole for positioning the target sample. The bearing surface can extend into the tube body to place the target sample inside the tube. In use, the target sample is placed at the position of the through hole, allowing the target sample to fully contact the freezing medium, thus improving the freezing rate. Furthermore, it also improves the thawing rate during thawing, making the target sample easier to detach, which is beneficial for maintaining the sample's recovery rate and viability.

The invention discloses a traditional Chinese medicine compound cell culture fluid and application thereof. The traditional Chinese medicine compound cell culture fluid comprises a basic culture medium, and 1 L of the basic culture medium contains 2-10 mg of notoginsenoside R1, 1-5 mg of notoginsenoside Rb1, 1-5 mg of notoginsenoside Rg1, 0.1-1 mg of notoginsenoside Rg3, 0.5-2 mg of notoginsenoside Re, 1-6 [mu] g of shikonin, 5-15 [mu] g of cordycepin and 1-20 mg of basil polysaccharide. In the traditional Chinese medicine compound cell culture fluid, notoginsenoside Rg3 can be combined with shikonin, so that the cytotoxicity can be enhanced, cord blood NK cells are promoted to be differentiated to mature functional phenotypes with high cytotoxic activity, and the killing efficiency of the NK cells on various tumor target cells is remarkably improved; the notoginsenoside Rb1 is combined with the basil polysaccharide, so that the NK cells can be driven to expand and grow, the activity of the NK cells can be maintained, and the cell purity can be improved, so that the persistence of the cell activity can be enhanced, and the tumor killing rate of the NK cells can be improved.

This invention discloses a method and apparatus for recovering carbon sources from residual sludge through multi-stage ultrasonic treatment, relating to the field of wastewater treatment technology. The method for recovering carbon sources from residual sludge through multi-stage ultrasonic treatment includes the following steps: (1) subjecting the residual sludge to a first-stage ultrasonic treatment with an acoustic energy density of 0.8 W / mL to 1.2 W / mL and an ultrasonic treatment time of T1; (2) subjecting the sludge treated in step (1) to a second-stage ultrasonic treatment with an acoustic energy density of 0.4 W / mL to 0.7 W / mL and an ultrasonic treatment time of T2; (3) subjecting the sludge treated in step (2) to a third-stage ultrasonic treatment with an acoustic energy density of 0.1 W / mL to 0.3 W / mL and an ultrasonic treatment time of T3; wherein T1+T2+T3 < 10 min. Using this invention, carbon sources can be efficiently recovered while reducing the disruption of functional microorganisms and retaining some extracellular polymers to maintain the activity of functional microorganisms.

This utility model relates to the field of aquaculture, specifically disclosing an aquaculture circulating water purification device, including a circulating water tank mechanism, a waste discharge mechanism, and a water inlet mechanism. The circulating water tank mechanism includes a water tank, with a water pump fixed to the lower end of the outer side of the water tank, and a connecting water pipe fixed to the upper end of the water pump. The waste discharge mechanism includes a bend, with a waste discharge pipe fixed to the lower end of the bend, a valve installed on the waste discharge pipe, and several filter holes on the upper outer side of the bend. A fixing flange is also installed on the outer side of the bend. This utility model guides wastewater from the aquaculture tank into the bend through the water inlet mechanism. The several filter holes on the upper outer side of the bend perform fine filtration of the wastewater, and the valve installed on the waste discharge pipe allows the wastewater to be quickly discharged from the device by simply opening the valve when there is a large amount of impurities accumulated in the water tank due to filtration.

The application discloses injectable long-acting collagen and a preparation method and application thereof, and belongs to the technical field of collagen preparation. The application solves the problems of rapid degradation and insufficient mechanical property of collagen after injection into the body, and the problem of inability to have biological safety, good biological activity and injectability. The long-acting collagen is prepared by taking methoxypolyethylene glycol active ester and collagen as raw materials. Amide reaction is caused between the methoxypolyethylene glycol active ester and lysine residues on the collagen, hydrophilic PEG is introduced on the surface of the collagen, a hydration layer is formed, biological enzymes are hindered from contacting the collagen, collagen degradation is delayed, and the single-arm structure of the methoxypolyethylene glycol active ester can avoid product agglomeration and abnormal viscosity caused by excessive cross-linking. The long-acting collagen has a long retention time in the body, has no obvious cytotoxicity, has high biological safety, and maintains cell proliferation, migration and adhesion activity and biological repair functions.

The present application belongs to the technical field of microneedle dressings, and relates to a gradient-adapted ROS-responsive exosome self-adaptive release microneedle dressing and a preparation method thereof. The microneedle dressing comprises a substrate layer and a microneedle body array on the substrate layer. The substrate layer and the microneedle body array are both ROS-responsive broken crosslinking gelatin / carboxymethyl chitosan composite hydrogels. The gelatin and carboxymethyl chitosan on the microneedle body are also connected with exosomes through ROS-responsive broken bonds. The crosslinking degree of the microneedle dressing decreases in a gradient from the substrate layer to the tip of the microneedle body. In the preparation, the substrate layer precursor and the microneedle body array precursor are prepared first, then the microneedle body array precursor and the substrate layer precursor are sequentially injected into the microneedle dressing mold, and finally the pre-cooled ROS-responsive broken crosslinking agent solution is injected into the microneedle dressing mold. After the crosslinking reaction, drying and demolding, the microneedle dressing is obtained. The microneedle dressing can realize precise ROS-responsive exosome release, and the preparation method is simple.

The application discloses a method for hydrogen production by using metal-organic framework partition room immobilized multi-enzyme, and belongs to the technical field of immobilized oxygen enzyme. The metal-organic framework has the advantages of designability and controllability, the metal-organic framework partition room immobilizes multi-enzyme, and different electron transfer routes are assembled to prepare hydrogen from starch or maltodextrin bioelectrocatalysis. The metal-organic framework partition room immobilized multi-enzyme can enhance the stability of the enzyme under anaerobic high-temperature conditions, prolong the hydrogen production plateau, and improve the total hydrogen production, and therefore has good industrial application value.

The application provides a reading assistance method, device, equipment and storage medium, the application acquires user portrait data of a target user; determines a suitable reading book from a pre-set book library for recommendation to the target user according to the user portrait data; generates a reading plan related to suitable reading content in the suitable reading book, the reading plan is consistent with the reading ability and interest of the target user; the suitable reading content is displayed according to the reading plan, and after the suitable reading content is displayed, interesting training exercises related to the suitable reading content are acquired and displayed, the interesting training exercises are a plurality of types of exercises under a plurality of reading ability dimensions which are pre-generated. As can be seen, the application can accurately recommend a suitable reading book, improve the reading interest of the target user, generate a reading plan consistent with the reading ability and interest of the target user, help to maintain user activity and improve the reading interest and efficiency of the target user, and the interesting training exercises of multiple types and multiple dimensions make the question type not single and the detection standard more accurate.

The utility model discloses an organic water -soluble fertilizer stirring device, including the cylinder of the upper end with the liquid inlet pipe, set up in the support of the lower extreme of cylinder and the circulating pump, the lower extreme of cylinder is inverted cone platform shape, and the lower extreme middle part of cylinder is provided with the aggregate pipe, and the aggregate pipe lower extreme is provided with the liquid discharge valve, and the liquid discharge valve is connected with the liquid discharge pipe, the circulating pump entrance end is passed through the pipeline no.

This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater classification and treatment system. It solves the problem in existing wastewater filtration processes where uneven water flow distribution easily forms "preferred channels," affecting filtration efficiency. The wastewater classification and treatment system includes a filter box. Several support blocks are fixedly connected to the inner side of the filter box. A support plate is slidably connected between two support blocks at the same height. Conical filter blocks are fixedly connected inside the support plates. Filters are slidably connected inside the filter blocks. An L-shaped air jet pipe passes through the side of the filter box, with one end connected to an air jet generator. A water outlet pipe is connected to the side of the filter box, with a purification mechanism at one end. A water inlet pipe is connected to the side of the filter box. This utility model optimizes filtration efficiency, facilitates the replacement of the bottom filter, and ensures microbial activity, thereby guaranteeing the efficiency of wastewater biological purification.

This invention belongs to the field of microbial cell lysis and extraction technology, and discloses a highly permeable cationic surfactant microbial lysis buffer and its preparation method. The lysis buffer employs a novel branched alkyl quaternary ammonium salt ester structure, introducing an α-hydroxy ester bond specifically recognized by extracellular lipase at the β-position of the quaternary ammonium nitrogen and the alkyl chain, achieving biodegradability after lysis. The preparation method employs a two-stage sequential lysis process: the first stage utilizes chelating agent microcapsules for slow release in a specific pH environment to pretreat the bacterial cells; subsequently, a stepwise surfactant addition strategy is used to activate and enhance cell membrane permeability; finally, efficient lysis is completed through lipase-catalyzed hydrolysis. This lysis buffer exhibits rapid penetration, high efficiency, targeted and controllable processing, and is environmentally friendly, suitable for the efficient extraction and downstream purification of bacterial proteins, enzymes, polysaccharides, and other intracellular products.