31results about How to "Guaranteed release" patented technology

The invention discloses semiconductor process equipment, and relates to the field of photovoltaics and semiconductors. The semiconductor process equipment comprises a bearing boat and a radio frequency isolation device, the bearing boat comprises a plurality of heating plates which are respectively used as radio frequency electrode plates or grounding electrode plates, each heating plate is provided with a heating piece, one end of each heating piece is led out relative to the corresponding heating plate, and each heating piece comprises a metal sleeve; the radio frequency isolation device comprises a first isolation assembly, the first isolation assembly comprises an isolation ring, and the isolation ring is connected to the metal sleeve and used for preventing radio frequency signals in the heating plate from being transmitted out through the metal sleeve. The problems of radio frequency leakage and the like can be solved.

The invention provides a pressurization environment simulation experiment device and method for a metal pipe in a hydrogen-doped environment. The invention relates to a pressurization environment simulation experiment device for a metal pipe in a hydrogen-doped environment, which comprises a gas source, pressurization equipment, a high-pressure hydrogen-doped environment mixing cabin, an environment humidity control system and a test cabin, the supercharging equipment and the environment humidity control system are respectively connected with the high-pressure hydrogen-doped environment mixing cabin through pipelines, and the high-pressure hydrogen-doped environment mixing cabin is connected with the test cabin through a pipeline.

The invention discloses cefixime granules and a preparation method thereof, the granules comprise cefixime, a filler, an adhesive, a wetting agent, a flavoring agent and pharmaceutically acceptable auxiliary materials, and the filler is a calcium hydrophosphate-hydroxyethyl cellulose compound. The cefixime granules prepared by the invention are simple in preparation method, stable in quality, non-degradable, not easy to generate impurities, better in suspension performance, better in dissolution performance, qualified and stable in quality after long-term storage, simple in preparation process and suitable for industrial mass production under damp and hot conditions.

The invention discloses an ultralow-temperature liquid intrusive pressure sensor calibration system and method and a sensor. The system comprises a vacuum heat insulation cavity, a temperature control cavity assembly, a pressure control cavity assembly, a pressure control gas assembly, a standard differential pressure gauge and a test cavity assembly. Wherein the temperature control cavity assembly comprises a temperature control cavity; the pressure control cavity assembly comprises a pressure control cavity, a pressure control cavity liquid inlet pipeline and a pressure control cavity exhaust pipeline; the pressure control cavity comprises an upper cavity body, a long neck tube and a lower cavity body; two ends of the long-neck tube are respectively communicated with the upper cavity and the lower cavity; the temperature control cavity and the pressure control cavity are located in the vacuum heat insulation cavity, the temperature control cavity wraps the lower cavity, and the test cavity assembly is connected with the lower cavity; a pressure control cavity liquid inlet pipeline, a pressure control cavity exhaust pipeline and a pressure control gas assembly penetrate through the vacuum heat insulation cavity and then are communicated with the upper cavity; the standard differential pressure gauge is connected with the upper cavity, a pressure control cavity pressure sensor is arranged on the pressure control cavity liquid inlet pipeline, the gas pressure intensity and the liquid pressure intensity of the gas space in the upper cavity are respectively tested according to the standard differential pressure gauge and the pressure control cavity pressure sensor, and the sum of the gas pressure intensity and the liquid pressure intensity serves as calibration comparison pressure; according to the invention, the influence of gas-liquid mixing relative output pressure can be avoided, and different pressure calibration tests of fixed-point temperature maintenance can be realized so as to meet the research and calibration requirements of the ultralow-temperature liquid intrusive pressure sensor.

The invention provides a preparation method of a nano microemulsion loaded with rare saponin in red ginseng extract and American ginseng extract, which comprises the following specific steps: extracting the rare saponin in the red ginseng extract and American ginseng extract, preparing a nano liposome loaded with the rare saponin, modifying with modified sesbania gum and preparing the nano microemulsion loaded with the rare saponin. Hydrophilic and hydrophobic rare ginsenoside are simultaneously embedded in the nano-liposome, in addition, the nano-liposome is modified by adopting modified sesbania gum, and the nano-liposome is endowed with an outer membrane structure by adopting the sesbania gum modified by genipin and feruloyl oligosaccharide, so that the stability of the nano-liposome can be improved, the biological activity of the rare ginsenoside is ensured, and the bioavailability of the rare ginsenoside is improved. In addition, the rare ginsenoside can be released in an organism in a targeted mode, genipin and feruloyl in the modified sesbania gum interact with phospholipid molecules in the nano-liposome in the intestinal environment, decomposition of the nano-liposome is further accelerated, rapid release of the rare ginsenoside is achieved, and a new method is provided for research and utilization of the rare ginsenoside.

According to the oral care solution composition disclosed by the invention, glucanase is encapsulated by using a pH sensitive microcapsule, so that the stability and activity of enzyme in a complex oral environment are maintained. The pH-sensitive microcapsule is prepared from boric acid modified poly (2-hydroxyethyl methacrylate) (PHEMA), a boric acid group serves as a lactic acid specific ligand and is covalently bound and polymerized with a monomer of HEMA to form a pH-sensitive polymer, and in an oral acidic environment, disintegration of the polymer promotes release of glucanase, it is ensured that enzyme is released at a needed place and time, and the pH-sensitive microcapsule has the advantages that the pH-sensitive microcapsule can be used for preparing the oral cavity. Therefore, glucan in the oral cavity is accurately decomposed, bacterial adhesion and biofilm formation are reduced, and improvement of oral cavity microorganism balance and improvement of user experience are facilitated.

The invention discloses a miniature bending-resistant low-loss high-temperature-resistant optical fiber and a preparation method thereof. The optical fiber comprises a fiber core, an inner cladding layer, a sunken layer, a first outer cladding layer, a second outer cladding layer, an inner coating layer and an outer coating layer, the relative refractive index difference delta 1 of the fiber core ranges from 0.30% to 0.89%, the relative refractive index difference delta 2 of the inner cladding ranges from-0.002% to-0.08%, the relative refractive index difference delta 3 of the sunken layer ranges from-0.3% to-0.015%, the relative refractive index difference delta 4 of the first outer cladding ranges from-0.1% to 0.02%, and the second outer cladding is a pure silicon dioxide glass layer. The optical fiber has high bending resistance, high temperature resistance and hydrogen loss resistance, and can solve the problems of narrow wiring space, stress concentration after aging and hydrogen loss increase of the traditional optical fiber in high temperature and other environments.

The application discloses a multifunctional injectable hydrogel and a preparation method and application thereof, and relates to the technical field of multifunctional hydrogel preparation and application. In the preparation, CMC-AGE and OD-SH are prepared respectively, and DSPE-se-se-PEG@AC NPs nanoparticles are prepared, then the multifunctional injectable hydrogel is prepared by forming a hydrogel through CMC-AGE and OD-SH and adding DSPE-se-se-PEG@AC NPs nanoparticles and / or beta nerve growth factor. The application also includes the multifunctional injectable hydrogel prepared by the above method and the application thereof. The application constructs an in-situ hydrogel delivery platform with good biocompatibility, is used for co-delivery of DSPE-se-se-PEG@AC NPs and NGF, is used in ischemic stroke treatment, and reshapes the pathological microenvironment of a cerebral infarction area, so that cerebral ischemic injury is reduced.

The invention discloses a preparation method of a balanced polyunsaturated fatty acid pumpkin seed oil-multi-element probiotic composite microcapsule, and relates to the technical field of biological materials. Comprising a composite microcapsule, and the composite microcapsule takes mixed pressed oil and probiotics as a core material and takes a whey protein and Arabic gum mixture as a wall material; the core material is embedded in the wall material; the mixed pressed oil comprises pumpkin seed oil and linseed oil; the preparation method comprises the following steps: S1, preparing balanced polyunsaturated fatty acid mixed pressed oil; s2, preparing a microcapsule wall material; s3, activating and preparing the probiotics; and S4, preparing the microcapsule. According to the preparation method of the microcapsule, probiotics are delivered to a target position, and the microcapsule is helpful for establishing a stable bacterial colony of an intestinal tract.

The utility model relates to a novel tobacco product field, concretely is a kind of heating cigarette tobacco core section structure, its characterized in that: including from inside to outside arrangement's cylindrical hollow support, tobacco sheet and cigarette paper composition, tobacco sheet is wound several rounds around cylindrical hollow support, forms a tobacco core with hollow, and cigarette paper is wrapped outside tobacco core.The utility model has the beneficial effect that:1, use hollow support to support the hole produced in the process of sheet rolling, prevent collapse in the process of cutting.2, support adopts large-area hollow design, while supporting the hole, maximum limit guarantees the release of smoke.3, support can be sprayed or impregnated essence spice, and different flavors are added to cigarette.

The invention discloses an aerosol generating product with a segmented aerosol generating matrix rod, characterized in that it comprises a smoking core material segment (1), a breathable hollow segment (2) and a filter segment (3); the smoking core material segment (1) comprises a segmented aerosol generating matrix rod and an anti-seepage / heat-conducting cigarette paper wrapping the segmented aerosol generating matrix rod, the two ends of the segmented aerosol generating matrix rod are short rod segments (11) formed by gluing tobacco particles, and the middle is a scattered particle segment (12) formed by unglued tobacco particles; the breathable hollow segment (2) and the filter segment (3) are wrapped by forming paper (5) to form a mouthpiece, and the smoking core material segment (1) and the mouthpiece are connected by a plugging paper (4). The short rod segments (11) at the two ends of the invention can ensure that the unglued tobacco particles in the middle do not fall and scatter, and there is no adhesive on the surface and gap of the unglued tobacco particles in the middle, and the axial ventilation volume, porosity and smoke release of the aerosol generating matrix rod are guaranteed. A cigarette core with high porosity can not only increase the amount of smoke generated, but also simplify the structure of aerosol generating products.

The invention relates to the technical field of metal prostheses, in particular to a composite porous biological ceramic metal prosthesis and a preparation method thereof.The composite porous biological ceramic metal prosthesis comprises a metal matrix, the metal matrix is made of Ti6Al4V alloy and has a 30-70% gradient porosity structure, and the aperture range is 200-600 micrometers; the surface of the metal matrix is covered with the biological ceramic coating, and the biological ceramic coating is composed of the following components in parts by weight: 60-80 parts of hydroxyapatite HA; according to the present invention, the excellent mechanical property and the biocompatibility of the Ti6Al4V alloy are utilized, and the structural characteristics of the natural bone tissue are simulated through the design of the gradient porous structure; on the nanoscale, the synergistic effect of the HA and the beta-TCP crystals creates a dynamically changing biological activity interface. The stable structure of the HA provides a good adhesion matrix for cells, and the moderate degradation of the beta-TCP continuously releases calcium and phosphorus ions.

This application discloses a soluble microneedle composition of a GLP-1R agonist and its preparation method, belonging to the field of biomedical technology. It includes a needle body material and a base material. The needle body material contains a small molecule GLP-1R agonist, a penetration enhancer, and a soluble polymeric backbone material, and may further include pH adjusters, humectants, and stabilizers. The base material is composed of polylactic acid, polylactic acid-glycolic acid copolymer, cross-linked polyhyaluronic acid, cross-linked gelatin, polyvinyl alcohol, polyvinylpyrrolidone, polyvinylpyrrolidone-vinyl acetate copolymer, N-(2-hydroxypropyl)methacrylamide polymer, or combinations thereof. Through injection, centrifugation, and drying, an integrated microneedle structure with mechanical strength and rapid dissolution is formed. It can pierce the stratum corneum of the skin to form microchannels and rapidly dissolve and release oxaliplatin subcutaneously, achieving transdermal delivery, effectively reducing gastrointestinal exposure and first-pass metabolism, and improving drug utilization and medication adherence.

A pneumatic landing gear retraction and extension system with mechanical sequence control and rapid unloading capability includes: a gas supply mechanism, an unloading valve, and a retraction and extension mechanism; the unloading valve has a left-position functional state and a right-position functional state; when the unloading valve is in the left-position functional state, the outlet of the unloading valve is connected to the inlet; when the unloading valve is in the right-position functional state, the outlet of the unloading valve is connected to the exhaust port; when the retraction and extension mechanism needs to be deployed, the unloading valve is in the left-position functional state; the gas supply mechanism supplies gas to the unloading valve, which enters the hatch retraction and extension mechanism and the positioning trigger valve of each retraction and extension mechanism; when the gas drives the hatch retraction and extension mechanism to deploy to the position, the positioning trigger valve switches to the conducting state, delivering gas to the landing gear retraction and extension mechanism to drive it to deploy to the position; when the retraction and extension mechanism is deployed to the position, the unloading valve is in the right-position functional state; the residual gas in the retraction and extension mechanism is discharged to the atmosphere through the exhaust port of the unloading valve, realizing rapid pneumatic unloading.

According to the automatic locking driving device for lithium battery foil production, automatic wind-up roller replacement is achieved, the wind-up roller can automatically enter a positioning block through a bearing seat under the action of the gravity of the wind-up roller, and use is convenient and efficient. The pressing assembly is installed on the supporting base and controlled through the push-pull air cylinder, and locking and releasing of the wind-up roller are effectively guaranteed. The rotating motor controls the shifting fork to move, meshing driving and disengaging of the wind-up roller are effectively guaranteed, automatic wind-up roller replacing is achieved, manpower and capital are saved, potential safety hazards are avoided, meanwhile, roller replacing efficiency is improved, and the device is suitable for industrial large-scale use and popularization.

The invention relates to the technical field of packaging containers of products, and provides a container sealing device capable of releasing materials in an internally transverse cutting mode, the container sealing device is formed by assembling an inner cover and a control cover together, the inner cover is provided with a first buckle, a first positioning stop blocking buckle, a sealing piece, a supporting and pressing structure and a convex chamber structure, and the inner wall of a surrounding structure of the inner cover is provided with a thread or a clamping and blocking structure; a sharp structure which is in a protruding shape and points to the inner wall of the side wall of the control moving cover is arranged in the control moving cover, and the control moving cover is provided with a second clamping buckle and a second positioning stopping blocking buckle; the container sealing device is mounted at the neck of a container, the sharp structure starts to slide from the convex chamber structure by controlling the mutual rotation between the moving cover and the inner cover, the thinning connecting structure is transversely cut from the interior of the cylindrical enclosure structure of the inner cover to a preset position, and the notch of the sealing piece is pushed to the exterior of the cylindrical enclosure structure, so that the container is sealed. And the materials in the container sealing device are released into the container. In addition, the invention further provides a component of the container sealing device and a packaging container.

The application discloses a kind of functionalized magnetic beads, which are magnetic microspheres formed by wrapping magnetic beads with bifunctional nucleic acid, and can specifically bind mRNA.A fungal mRNA extraction kit composed of functionalized magnetic beads includes grinding material, lysing solution I, lysing solution II, magnetic bead binding solution, washing solution I, washing solution II and eluent.A mRNA extraction method includes sequentially adding grinding material, lysing solution I, lysing solution II, magnetic bead binding solution, washing solution I, washing solution II and eluent after sample pretreatment to obtain mRNA product.The application breaks through the traditional mRNA extraction method, obtains high-quality mRNA, and has the advantages of simple operation, safety, high sensitivity, good reproducibility and low cost.The mRNA obtained by the application can provide high-quality templates for RT-PCR detection, improve the specificity and sensitivity of detection, and has wide application prospects in the fields of clinical diagnosis of diseases, judicial identification, food safety detection, microbial detection and molecular biology.

The utility model provides a steam heater, and relates to the technical field of heaters. The steam heater comprises a shell and a heat exchange assembly arranged in the shell, and the heat exchange assembly is installed in the shell through a buffer assembly; the buffering assembly comprises a supporting column, one end of the supporting column is connected with the shell, and the other end of the supporting column faces the heat exchange assembly. The buffer spring is arranged between the supporting column and the heat exchange assembly; when a medium needing heat exchange enters the shell, the heat exchange medium makes contact with the medium needing heat exchange through the heat exchange assembly, and in the contact process, the heat exchange assembly eliminates thermal stress in the heat exchange process through the buffer spring. In order to ensure the stable operation of the heat exchange assembly, the lower end of the heat exchange assembly is supported by the buffer spring, so that the stress of the heat exchange assembly is released in the use process, and the deformation is eliminated.

The application discloses a semiconductor process equipment, and relates to the photovoltaic and semiconductor fields. The semiconductor process equipment comprises a bearing boat and a radio frequency isolation device. The bearing boat comprises a plurality of heating plates serving as radio frequency electrode plates or ground electrode plates respectively. The heating plates are provided with heating pieces. One end of the heating pieces is led out relative to the heating plates. The heating pieces comprise metal sleeves. The radio frequency isolation device comprises a first isolation component. The first isolation component comprises an isolation ring. The isolation ring is connected to the metal sleeves and is used for blocking radio frequency signals in the heating plates from being transmitted out through the metal sleeves. The application can solve the problems of radio frequency leakage and the like.

The utility model provides an auxiliary support for template processing, and relates to the technical field of template processing. According to the utility model, the auxiliary bracket assembly is arranged at the top of the bottom plate, the bracket is used for supporting a template or a workpiece, a plurality of insert cores and demolding insert cores are arranged on the bracket, the design of the insert cores and the demolding insert cores is mainly used for providing flexible adjusting and fixing functions, and the template or the workpiece is placed on the bracket; close combination of the template and the support is ensured through the insert cores, movement or deviation of the template in the machining process is prevented, the template can be conveniently separated from the support after machining is completed due to the arrangement of the demolding insert cores, the difficulty in manual demolding and the possible precision problem are avoided, and the machining efficiency is improved. The first demoulding insert core is used for preliminary loosening when the template is separated, and the second demoulding insert core and the third demoulding insert core provide a more accurate and stable demoulding function, so that demoulding is completed on the premise that the template is not damaged.

The invention belongs to the technical field of engine lubrication, and particularly relates to an assembly for replacing an engine oil filter element without shutdown of an engine, which comprises a filter element, an engine oil supply oil duct and an engine main oil duct, and is provided with an energy storage oil duct, a waste oil discharge oil duct and an exhaust oil duct. A reconfigurable oil way system is constructed, the reversing valves are all controlled by a filter PLC in a centralized mode according to signals of an engine ECU, and therefore the system can be automatically switched among the four modes of normal work, energy storage intervention, filter element replacement and system exhaust. Before the filter element is replaced, the energy storage oil way temporarily supplies oil to the main oil way of the engine through switching of the valve group, meanwhile, an old filter element oil way is isolated and emptied, pressure fluctuation of an engine oil way is reduced, it is guaranteed that the oil way of the main oil way is smooth, the filter element is replaced without shutdown of the engine, and the continuous operation capacity and maintenance efficiency of equipment are remarkably improved.

This invention relates to the field of biofertilizer technology, specifically disclosing a microalgae biofertilizer with soil remediation function and its preparation method. The preparation method includes: domesticating and culturing *Scenedesmus obliquus* liquid, *Cyanobacterium cyanobacteria* liquid, and *Monoflagellates* liquid with γ-aminobutyric acid-induced activation solution, and co-culturing them with *Bacillus polymyxa* and *Bacillus megaterium* to obtain a bioslurry; encapsulating the bioslurry with sodium alginate-carboxymethyl chitosan to obtain bioactive microspheres; impregnating corn straw with magnesium-iron salt precursors and pyrolyzing it under nitrogen to obtain modified biochar loaded with magnesium oxide and iron oxide, and compounding it with potassium humate to obtain a biochar suspension; and mixing the bioactive microspheres, biochar suspension, xanthan gum, zeolite, ammonium polyphosphate, potassium nitrate, zinc sulfate, potassium silicate, and deionized water evenly to obtain the microalgae biofertilizer with soil remediation function.

The application provides a kind of "antibacterial synergistic-mineralization regulation" bifunctional nanomaterial and its preparation method and application, belongs to the technical field of biomedical materials.The application first mixes sodium hydrogen phosphate solution and calcium chloride solution to obtain amorphous calcium phosphate suspension;Then amorphous calcium phosphate suspension and tannic acid solution are mixed to obtain ACP@TA suspension;Finally, ACP@TA suspension and hydroxypropyltrimethylammonium chloride chitosan solution are mixed to obtain bifunctional nanomaterial.Through the electrostatic adsorption of tannic acid and antibacterial layer hydroxypropyltrimethylammonium chloride chitosan to form a crosslinked shell, amorphous calcium phosphate is effectively wrapped, which can significantly delay the crystallization process of amorphous calcium phosphate, ensure long-term calcium and phosphorus ion release, and effectively exert antibacterial function, provide an ideal local microenvironment for the remineralization of dental hard tissue, and ultimately realize the biomimetic mineralization of dental enamel and the deep mineralization of dentin tubules.

The utility model discloses a mould with mobile phone screen lens shearing assembly, include: fixed mould unit and install on the core of movable mould unit, be provided with the cavity between fixed mould unit and the core, and the molten plastic liquid is injected into the cavity through the runner, and the lens workpiece is formed, the utility model discloses through the shearing in mould, completely solve the lens workpiece edge gate residual problem. Realize injection molding - shearing - demoulding integrated operation. Meanwhile, the shearing action is embedded in the injection molding cycle, and the single piece production rhythm is shortened by 4 seconds or more, and the yield is improved to 99.2%, and it is significantly adapted to the high -speed automatic production line. Compared with the prior art, not only avoids the yield loss of 8% to 12% and the efficiency bottleneck of offline shearing, but also reduces the comprehensive cost by 15% through in-situ treatment in the mould, ensures the optical performance of the lens and the reliability of the terminal product, and meets the stringent production demand of the intelligent mobile phone for the precision assembly.

The invention discloses an aerosol generating product with a particle-type aerosol generating matrix rod having a high porosity, comprising a smoking core material section (1), a breathable hollow section (2) and a filter section (3); the smoking core material section (1) comprises an aerosol generating matrix rod and an anti-seepage / heat-conducting cigarette paper wrapping the aerosol generating matrix rod, the aerosol generating matrix rod is formed by bonding scattered tobacco particles with a binder, and only part of the surface of some tobacco particles in the aerosol generating matrix rod has the binder; the internal porosity of the smoking core material section (1) is 40-80%; the breathable hollow section (2) and the filter section (3) are wrapped with forming paper (5) to form a mouthpiece, and the smoking core material section (1) and the mouthpiece are connected by a connecting paper (4). Before the scattered tobacco particles of the present invention are bonded, not all tobacco particle surfaces have adhesives, and the adhesives do not cover the entire surface of the tobacco particles. This ensures that after the tobacco particles are bonded, there will be no problem of pore clogging in the gaps formed between the two due to the adhesive cooling, thereby ensuring the axial air permeability and porosity of the aerosol generating matrix rod.

The application provides an injection molding machine for plastic part production and relates to the technical field of automotive interiors, and comprises a U-shaped base, a mounting table fixedly arranged at the top of the U-shaped base, four groups of supporting columns fixedly arranged at the top of the mounting table, and a top injection cavity fixedly arranged at the top of the supporting column; an injection channel is fixedly arranged in the middle of the top injection cavity; a sliding valve disc is fixedly arranged at the bottom of the injection channel; a sliding valve core is slidingly arranged in the sliding valve disc; a sealing plate is fixedly arranged at the bottom of the sliding valve disc; and an injection head is fixedly arranged at the bottom of the sealing plate; the sliding valve core is arranged to provide a valve control structure capable of being automatically opened, a driving lifting lead screw is rotated to make a movable injection port contact the injection head to be in abutment and docking, then a compound mold continues to rise, the top surface of the compound mold contacts a spring rod to push the spring rod upward, the sliding valve core is no longer blocked from the injection head, injection is performed, and the problem that existing equipment lacks an automatically opened and closed valve is solved.

The application discloses a standardized sample library and heterogeneous test data platform interoperation processing method and system, the method comprising: mapping experimental event original data in each heterogeneous system into a standardized event primitive set containing event type, event timestamp, event object and event resource, and building a sample pedigree directed graph with sample entities and their intermediate forms as nodes and processing relationships as directed edges; then constructing each platform test result data into a heterogeneous observation graph, generating a candidate set of links under the constraint of feasibility, combining a consistency factor to establish a factor graph model and performing global solving through a constraint optimization algorithm to obtain the optimal link selection of the observation nodes; further detecting contradictory relationships and identifying uncertain subgraphs, implementing local freezing of the link relationships in the uncertain subgraphs, and generating standardized sample library records for other link relationships. The method can improve the accuracy and stability of cross-platform test result attribution.

The invention relates to the technical field of industrial torches, in particular to a self-operated lifting variable-sectional-area discharging device which comprises a torch cylinder, a gas inlet pipeline is fixedly connected to the side wall of the torch cylinder, a gas outlet inner cavity is formed in the torch cylinder, a gas collecting plate is arranged in the gas outlet inner cavity, and the gas collecting plate is fixedly mounted at the gas outlet end of the gas outlet inner cavity; a gas outlet is formed in the middle of the gas collecting plate, unorganized combustible gas needing to be discharged can enter the gas outlet inner cavity of the torch barrel through the gas inlet pipeline, then can rise to pass through a bundle of the gas collecting plate to be discharged from the gas outlet, and then is blown to the lifting gas blocking plate located on the gas outlet. The impact force of gas exhausted from the gas outlet can be increased, then the lifting gas blocking plate can be pushed to ascend, when the lifting gas blocking plate ascends, the fan-shaped moving plate can slide into the fan-shaped sliding groove, the circulation area is increased, the use requirement is met, on the contrary, the fan-shaped moving plate can be shrunk, flexibility and convenience are achieved, and automatic adjustment can be achieved according to the gas flow.

The present invention relates to the field of pharmaceutical preparations, and provides a vitamin D drop and a preparation method thereof, wherein the main components include vitamin D, an antioxidant, an oil phase, a surfactant, and a cosurfactant; wherein the content is a self-microemulsion system made of vitamin D, an oil phase, a surfactant, and a cosurfactant; and the soft capsule shell is made of gelatin, a plasticizer, and purified water. During the preparation, the oil phase, the surfactant, and the cosurfactant are first made into a blank self-microemulsion under stirring conditions, and then vitamin D and an antioxidant are added and stirred to obtain a drug-loaded self-microemulsion; and the drug-loaded self-microemulsion is then filled into a soft capsule as a content to obtain the target product. After the vitamin D drops disintegrate in water, they spontaneously form a microemulsion solution with a particle size not exceeding 100 nm, a clear and uniform appearance, and good stability, which significantly improves the solubility of vitamin D in water, and improves the in vitro dissolution and in vivo bioavailability of vitamin D.

This invention discloses a non-contact method for preserving pork using a composite essential oil emulsion combined with an electrostatic field and modified atmosphere packaging. The prepared composite essential oil nanoemulsion is packaged in polyethylene packaging, and the chilled pork is preserved using an electrostatic field synergistic with modified atmosphere packaging. A simple ultrasonic method is used to prepare a composite essential oil nanoemulsion composed of composite essential oils and Tween 80. This prepared emulsion and cooled, acid-removed pork are then placed in an O2 atmosphere. 2 CO 2 N 2 The product is stored in modified atmosphere packaging bags of polyethylene at 4±1℃. This invention can effectively control the increase in total bacterial count, volatile basic nitrogen, and pH of chilled pork during storage, better maintain the product's textural properties, color, and sensory quality, and extend the shelf life of chilled pork by 4-6 days.