22results about How to "Reduce burst" patented technology

The invention provides antibacterial ceramic and a preparation method thereof. The antibacterial ceramic comprises a blank body and a glaze layer, the blank body is prepared from the following raw materials: kaolin, diatomite, montmorillonite, soapstone, bamboo charcoal powder, a first antibacterial agent, a fluxing agent, a pore forming agent, an adhesive and a reinforcing agent; the glaze layer comprises the following raw materials: kaolin, diatomite, dolomite, tourmaline, sodium oxide, a second antibacterial agent, a binder, a stabilizer and a dispersant. The method comprises the following steps: firing a molded green body by adopting stepped segmented heating, and carrying out glaze firing by adopting stepped segmented heating after glazing, thereby obtaining the antibacterial ceramic. According to the antibacterial ceramic disclosed by the invention, the antibacterial agent is added into the green body and the glaze layer, so that the influence on the antibacterial property of the green body in the firing process of the green body is avoided, the antibacterial durability is further improved, the antibacterial effect is enhanced, and the antibacterial rate on pathogenic bacteria such as escherichia coli and staphylococcus aureus reaches 99.99%.

The invention discloses a pH-sensitive coaxial nanofiber membrane loaded with enoxacin as well as a preparation method and application of the pH-sensitive coaxial nanofiber membrane. The electrostatic spinning nanofiber membrane is composed of a shell layer and a core layer, the shell layer comprises ethyl cellulose and Eudragit L100, the core layer comprises ethyl cellulose and enoxacin, and the electrostatic spinning nanofiber membrane is prepared through the electrostatic spinning technology. Results show that the coaxial nanofiber has a good core-shell structure, is good in water absorption, can keep a wound surface wet, has certain tensile strength, is obvious in in-vitro bacteriostasis, and can effectively promote healing of the wound surface and revascularization. The research hot spot in the field of materials is creatively applied to a pharmaceutical preparation delivery system, the prepared pH-sensitive electrostatic spinning nanofiber membrane is used for tissue regeneration and repair, and a good effect is achieved in animal experiments. The defect that an existing wound field depends on a traditional treatment means is overcome, and a basis is provided for existing industrial production.

The invention discloses an antibacterial gel composite material as well as a preparation method and application thereof. The antibacterial gel composite material comprises photo-crosslinking hydrogel, and the photo-crosslinking hydrogel is coated with a drug-loaded mesoporous material; the drug-loaded mesoporous material comprises polydopamine, mesoporous biological ceramic and a growth factor which are arranged in sequence; the surface of the mesoporous biological ceramic is coated with polydopamine; growth factors are encapsulated in the mesoporous biological ceramic; the mesoporous biological ceramic is doped with metal ions with an antibacterial effect. According to the antibacterial gel composite material provided by the invention, in the composite material, mesoporous biological ceramic is coated with polydopamine, so that ionic products and doped antibacterial ions in drugs and biological ceramic can be slowly released, the burst release is relatively small, and stable release is realized; in addition, by regulating and controlling the doping amount of the antibacterial ions in the porous biological ceramic and the mass of the medicine loaded in the doped mesoporous biological ceramic, the release curve of the medicine and the ions can be effectively regulated and controlled.

The invention relates to the technical field of traditional Chinese medicine, in particular to a traditional Chinese medicine compound extract for improving oral environment and a preparation method and application thereof, and the traditional Chinese medicine compound extract comprises the following components in parts by weight: 10-15 parts of radix puerariae, 6-10 parts of coptis chinensis, 10-15 parts of honeysuckle, 10-15 parts of gallnut, 10-15 parts of scutellaria baicalensis, 10-15 parts of dandelion, 10-15 parts of wild chrysanthemum flower, 6-10 parts of raw liquorice, 10-15 parts of radix angelicae and 15-20 parts of asarum. The traditional Chinese medicine compound extract disclosed by the invention is green, natural and free of any chemical product, and by adopting a compound decoction extraction mode, the traditional Chinese medicine compound extract disclosed by the invention can more effectively enable medicines to exert the effects of monarch, minister, assistant and guide in a compound so as to achieve the effect of enhancing the effect.

The invention belongs to the technical field of pharmaceutical preparations, and particularly relates to a preparation method and application of a nepafenac and quercetin sustained-release gel preparation, and the nepafenac and quercetin sustained-release gel preparation comprises the following components in parts by mass: 5-75 parts of nepafenac; 3 to 60 parts of quercetin; 100 to 500 parts of a biological carrier; 15 to 350 parts of a viscosity reducing agent; and 50 to 200 parts of a non-aqueous solvent. The composition can relieve pain and resist inflammation, can promote tissue repair and growth, can effectively realize a slow release effect, and is convenient and long-acting in administration. The invention also provides a preparation method and application thereof.

The present invention proposes an acid-reducing and fertilizing improver for red soil rice fields, a preparation method and an improvement method thereof, and belongs to the technical field of soil improvement. After the straw is carbonized, it is added to a urea solution, sodium alginate and carboxymethyl chitosan are added, and an injection pump is dripped into a calcium chloride solution drop by drop to obtain a gel ball, the surface of which is modified by a silane coupling agent, hydrolyzed, added to a solution containing microorganisms and biological enzymes, and freeze-dried to obtain an acid-reducing and fertilizing improver for red soil rice fields. The acid-reducing and fertilizing improver for red soil rice fields prepared by the present invention can not only effectively increase the soil pH value, improve soil fertility, improve soil structure, and promote the downward leaching of salt-damaging ions, but the straw powder can also improve the soil CO2 bias, soil air, and soil quality, and has a good slow-release effect and broad application prospects.

The invention discloses a pH / GSH dual-responsive targeting nanoparticle based on MOF-199, the nanoparticle contains doxorubicin, MOF-199, polydopamine and hyaluronic acid, the doxorubicin is encapsulated in a pore structure of the MOF-199, the surface of the MOF-199 is coated with the polydopamine, and the polydopamine and the hyaluronic acid are grafted through a metal coordination effect. The invention also discloses a preparation method of the nanoparticle, the prepared nanoparticle has tumor targeting property, slow release property and pH / GSH responsive intelligent drug release ability, and also has high biocompatibility and stability, realizes organic combination of chemotherapy / chemical kinetic therapy (CDT) / photo-thermal therapy (PTT), makes up for the deficiency of traditional single therapy, and has broad application prospects. The compound has a great application prospect in preparation of anti-tumor drugs.

The utility model discloses a fracturing truck high pressure manifold protection device relates to petroleum pipeline machinery technical field, this high pressure manifold protection device, including pipeline and clamping ring, the clamping ring is half circular ring structure setting, and two groups are symmetrically set to clamping ring, and two groups of clamping ring splicing form annular structure and are covered in the outside of pipeline, the connecting end of pipeline is provided with flange, and after butt joint of clamping ring, the sleeve ring is moved to the outside of half round board, utilizes the internal thread of sleeve ring and the external thread of half round board surface and carries out the screw thread connection, utilizes the sleeve ring and clamps in the outside of half round board, and the limiting fixing of two groups of clamping ring and two groups of half round board is carried out, so that half round board and clamping ring can be firmly clamped in the connecting place between two high pressure manifold, can provide the effect of pressing and protection while carrying out the connection between pipeline.

The invention relates to a carrier for realizing long-acting controlled release of cinnamyl aldehyde based on synergism of bacterial cellulose and polylactic acid, a preparation method of the carrier and application of the carrier in fresh keeping of fruits and vegetables, and the preparation method comprises the following steps: firstly, placing the bacterial cellulose in a deep eutectic solvent system containing citric acid, glycerol and choline chloride, and heating for reaction to obtain CABC; then, the CABC is placed in an activation system containing the 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide and the N-hydroxysuccinimide, and CABC-ONH2 is obtained; then, the CABC-ONH2 and cinnamyl aldehyde are subjected to an oximation reaction, and CABC / CIN is obtained; and finally, mixing CABC / CIN with polylactic acid to form a film, so as to obtain the bacterial cellulose / polylactic acid synergistic cinnamyl aldehyde long-acting controlled release carrier. Compared with the prior art, initial burst release of CIN in the degradable carrier is effectively reduced, and the release stability and activity retention rate in the middle and later periods are improved; the cooperative processing suitability with PLA is improved; the antibacterial and antioxidant effects are simultaneously realized in the fruit and vegetable fresh-keeping application.

The composite tooling of the hollow glass of the present invention comprises a rectangular frame, and a positioning device and a multi-directional linkage mechanism installed on the frame. A plurality of positioning devices are used. The positioning devices on the left and right sides of the frame are respectively connected to the first driving device and driven by the first driving device. The first driving device is also connected to the multi-directional linkage mechanism. The multi-directional linkage mechanism is connected to the positioning devices on the front and rear sides of the frame via the second driving device, thereby driving the movement of the positioning devices on the front and rear sides of the frame; the positioning device is used for positioning and aligning the outer edges of each layer of glass and the keel. The present invention has a simple structure, convenient operation, and high cost performance. It improves the relative position dimensional accuracy of the composite hollow glass, increases the overall strength of the hollow glass, reduces cracking, and facilitates the modular assembly installation of the hollow glass. The present invention changes the traditional composite method of hollow windows, and can realize the rapid positioning of the lower glass, the rapid installation of the middle keel, and the rapid composite of the upper glass.

The present application relates to a method for preventing sticky sludge from expanding and blocking a denitrification system, characterized in that a plate-and-frame tank is arranged between a secondary sedimentation tank and a filter tank to intercept sticky sludge in an expanded state; the plate-and-frame filler adhering to the sticky expanded sludge is collected for air flushing and chemical micro-stimulation, growth factors generated by promoting the expansion of the sticky sludge are returned to a biochemical tank, the hydraulic retention time of the biochemical tank is shortened, the expansion of the sticky sludge is promoted, and then physical separation of the sticky sludge is performed, so that the treatment cycle of the sticky sludge expansion is reduced, and a simple, energy-saving, economical and easy-to-control water treatment process is provided for relieving the sticky sludge expansion.

The invention relates to the technical field of traditional Chinese medicine, in particular to a traditional Chinese medicine compound extract for improving swelling and aching of gum as well as a preparation method and application thereof, and the traditional Chinese medicine compound extract comprises the following components in parts by weight: 15-20 parts of kudzuvine root, 10-15 parts of coptis chinensis, 15-20 parts of honeysuckle, 10-15 parts of gallnut, 10-15 parts of scutellaria baicalensis, 10-15 parts of dandelion, 10-15 parts of wild chrysanthemum flower, 6-10 parts of raw liquorice and 10-15 parts of pollen typhae. The traditional Chinese medicine compound extract disclosed by the invention is green, natural and free of any chemical product, and by adopting a compound decoction extraction mode, the traditional Chinese medicine compound extract disclosed by the invention can more effectively enable medicines to exert the effects of monarch, minister, assistant and guide in a compound so as to achieve the effect of enhancing the effect.

The invention provides a spliced silicon rod processing method and a silicon wafer processing method, and the method comprises the steps: bonding at least two short round silicon rods in the axial direction of the short round silicon rods through a first glue layer, and forming a spliced round silicon rod; squaring the spliced round silicon rod to form a spliced silicon rod; and before the wire cutting process is carried out, at least part of the first adhesive layer in the spliced silicon rod is removed to form a spacer region. Before the wafer cutting procedure is carried out, at least part of the first adhesive layer in the spliced silicon rod is removed to form the interval area, the interval area can provide an expansion space for the first adhesive layer which absorbs water to expand due to cutting heat, wafer spalling caused by the fact that the first adhesive layer is heated and absorbs water to expand when the spliced silicon rod is cut is reduced, and the yield of wafer cutting is improved.

The invention discloses a cable capable of delaying burst and combustion under overload and short circuit conditions and a production method, and relates to the technical field of cables, the cable takes an annealed annealed copper wire as a conductor, takes halogen-free low-smoke flame-retardant cross-linked polyolefin as an insulating layer, and takes a nylon cable material as a protective layer; wherein the nylon cable material is prepared from the following components in percentage by mass: 90% of PA11, 9% of PA66, 0.5% of an antioxidant and 0.5% of an anti-hydrolysis agent; the insulating layer and the protective layer form a double-layer co-extrusion covering layer which is wrapped outside the conductor; according to the invention, through the cooperation of the halogen-free low-smoke flame-retardant cross-linked polyolefin of the insulating layer and the nylon cable material of the protective layer, after the conductor is overloaded and short-circuited to cause high temperature, the cable is delayed to burst, and the contact time of external oxygen in the insulating layer is prolonged, so that the effect of delayed combustion is realized; the problem that an existing explosion-delay flame-retardant cable does not have long-time explosion-delay and combustion-delay performance under the overload short circuit condition is solved.

The invention discloses a screening treatment method of cigar tobacco leaves, which comprises the following steps: measuring the initial mould content of the cigar tobacco leaves, screening and grading according to the initial mould content, and marking the cigar tobacco leaves as normal raw materials when the initial mould content is 10-105 CFU / g; when the initial mould content is greater than 105 CFU / g, the cigar tobacco leaves are marked as high-risk raw materials; the normal raw materials or the high-risk raw materials are subjected to flexible moisture regaining treatment, the flexible moisture regaining treatment time is 20-25 min, 25-30 min, 30-40 min, 40-50 min or 50-60 min, and a flexible moisture regaining product is obtained; the temperature for carrying out the flexible moisture regaining treatment on the high-risk raw materials is 58-59 DEG C; the temperature for carrying out the flexible moisture regaining treatment on the normal raw materials is 62-65 DEG C; the flexible moisture regaining product is subjected to stacking fermentation treatment, the stacking fermentation treatment time is 10-35 days, the mold content in the stacking fermentation treatment process is lower than 10 < 6 > CFU / g, and a stacking fermentation product is obtained. And carrying out enhanced moisture regaining treatment on the stacked fermentation product to obtain an enhanced moisture regaining product. The purpose of reducing the mildew rate of finished cigarettes is achieved.

The invention relates to the technical field of electrical data processing, and discloses a mechanical performance optimization method and system for a fast vacuum switch, and the method comprises the steps: obtaining a vacuum state data set in the use process of the fast vacuum switch, and obtaining a vacuum state evaluation value based on the analysis of the vacuum state data set; acquiring a component state data set in the use process of the quick vacuum switch, and analyzing based on the component state data set to obtain a component state evaluation value; acquiring a mechanical motion data set in the use process of the rapid vacuum switch, and analyzing based on the mechanical motion data set to obtain a mechanical motion evaluation value; based on the vacuum state evaluation value, the component state evaluation value and the mechanical motion evaluation value, the optimization condition of the rapid vacuum switch is judged; optimizing the mechanical performance of the quick vacuum switch needing to be optimized based on the optimization condition judgment result of the quick vacuum switch; the problems that an existing vacuum switch mechanical performance optimization method is low in optimization result accuracy and optimization efficiency are solved.

The utility model discloses a grease extraction device and a rubber tree seed oil extraction device, which comprise composite drying equipment, shelling equipment and oil pressing equipment, materials to be pressed sequentially pass through the composite drying device, the shelling device and the oil pressing device. The composite drying equipment comprises a microwave drying unit and a constant-temperature negative-pressure drying unit which are communicated with each other, and a tempering channel is arranged between the microwave drying unit and the constant-temperature negative-pressure drying unit; the shelling equipment comprises a roller classifying screen and a rubbing and grinding crusher; the system further comprises raw material removing equipment, cleaning equipment and spectrum color sorting equipment. The utility model discloses a preparation device special for rubber tree seed oil, which reduces impurities in squeezed rubber tree seed oil by removing, cleaning and shelling mildewed seeds. And through composite drying, moisture in the seeds is reduced, and active ingredients in the seeds can be reserved to the maximum extent, so that the quality of the rubber tree seed oil is improved.

The application discloses a condenser and a clothes processing device. The condenser comprises a shell assembly and a pressure relief assembly. The shell assembly is provided with a liquid inlet cavity, a liquid outlet and a condensation channel. The liquid inlet cavity is communicated with the liquid outlet and the condensation channel. The condensate can enter the liquid inlet cavity and be sprayed into a water mist surface transversely across the condensation channel through the liquid outlet. The shell assembly is also provided with a pressure relief channel, two ends of which are communicated with the liquid inlet cavity and the outside of the liquid inlet cavity, respectively. At least part of the pressure relief assembly is arranged in the pressure relief channel and is used for selectively conducting or blocking the pressure relief channel. After the condenser of the application appears the problem of blockage at the liquid outlet, the pressure relief assembly can conduct the pressure relief channel, the condensate in the liquid inlet cavity is discharged through the pressure relief channel, and the pressure in the liquid inlet cavity can be released. Therefore, it is favorable to reduce the probability of the burst problem of the liquid supply pipeline communicated with the liquid inlet cavity, and further favorable to improve the reliability of the condenser.

The invention discloses a granisetron sustained-release microsphere and a preparation method thereof, the granisetron sustained-release microsphere comprises 3-12% of granisetron or its pharmaceutically acceptable salt, 1-25% of a stabilizer, and 65-96% of a biodegradable polymer according to 100% of the mass of the granisetron sustained-release microsphere, and the preparation method is characterized in that the granisetron or its pharmaceutically acceptable salt accounts for 3-12% of the mass of the granisetron sustained-release microsphere; the biodegradable polymer is a polylactic acid-glycolic acid copolymer, and the stabilizer is fatty acid; the granisetron sustained-release microspheres obtained by the invention are high in drug loading capacity, uniform in granularity, complete in form, free of adhesion, smooth in surface, free of obvious holes, free of risks of burst release and drug leakage, and capable of realizing in-vitro sustained release as long as 5-7 days.

The invention relates to the technical field of traditional Chinese medicines, in particular to a traditional Chinese medicine compound extract beneficial for freshening breath and a preparation method and application thereof. The traditional Chinese medicine compound extract is prepared from the following components in parts by weight: 10 to 15 parts of radix puerariae, 6 to 10 parts of rhizoma coptidis, 10 to 15 parts of flos lonicerae, 10 to 15 parts of gallnut, 10 to 15 parts of radix scutellariae, 10 to 15 parts of herba taraxaci, 10 to 15 parts of flos chrysanthemi indici, 6 to 10 parts of raw radix glycyrrhizae, 10 to 15 parts of lotus leaves, 10 to 15 parts of orange peel, 10 to 15 parts of barley and 5 to 10 parts of herba menthae. The traditional Chinese medicine compound extract disclosed by the invention is green, natural and free of any chemical product, and by adopting a compound decoction extraction mode, the traditional Chinese medicine compound extract disclosed by the invention can more effectively enable medicines to exert the effects of monarch, minister, assistant and guide in a compound so as to achieve the effect of enhancing the effect.

The telescopic water pipe with the changeable water pressure comprises a pipe body and a connector installed at the end of the pipe body, a valve body is arranged between the pipe body and the connector, the water pressure of water flow passing through is increased or reduced through the valve body, the valve body is detachably connected, and a user can install or detach the valve body for use; the valve body comprises a pressurization mode and a pressure reduction mode, the valve body is positively installed in the pressurization mode, the water pressure is increased when water flow passes through the valve body, and when the water pressure is too small, the valve body can be positively installed for increasing the water pressure of water outlet of the water pipe; in a pressure reduction mode, the valve body can be reversely mounted when the water pressure is too high; when the water pressure is enough, the valve body does not need to be used for pressurization or decompression, the valve body can be detached, different modes can be switched according to the use requirements of users for different water pressures, the multifunctional water pressure regulating valve has multiple functions, and the good use experience of the users is met.

The invention discloses a Chinese wolfberry fruit pest green prevention and control method based on functional plants. The invention discloses a green prevention and control method for Chinese wolfberry pests based on functional plants. The green prevention and control method comprises the following steps: 1) arranging functional plant planting belts on the edge of a Chinese wolfberry plantation or two sides of a working road; 2) selecting seeds of functional plants, and sowing the seeds on the functional plant planting belt to obtain a functional plant belt; the functional plant is selected from at least one of astragalus membranaceus, radices stellariae dichotomae and scutellaria baicalensis; 3) performing water and fertilizer integrated management on the functional plant zone and the wolfberry plantation; 4, a suspended sticky trap is arranged above the functional plant zone, the migratory flying amount of the winged aphids is monitored, the occurrence trend of the winged aphids on the Chinese wolfberry branches in the field is predicted on the basis of the winged aphid trapping amount, and accurate prevention and control of Chinese wolfberry pests are guided. The Chinese wolfberry aphid breeding and harm can be reduced, the plant type and ecological niche of Chinese wolfberry are complementary, the natural enemy diversity of Chinese wolfberry pests is improved, and the pests on the Chinese wolfberry are controlled.