14results about How to "Formation effect is good" patented technology

The invention provides a target gene PEX3 which plays a role in preventing and treating the pyricularia oryzae by utilizing an SIGS technology, and an RNA molecule which can be used for preventing and treating the pyricularia oryzae is designed according to the target gene and is used for inhibiting spore germination and appressorium formation of the pyricularia oryzae, so that the pathogenicity of the pyricularia oryzae is inhibited, and a novel method for preventing and treating the pyricularia oryzae is further provided. The RNA molecule comprises siRNA and dsRNA (double-stranded ribonucleic acid). The invention proves that the siRNA molecule can coexist with the magnaporthe oryzae for more than 48 hours, effectively inhibits the germination and growth of the magnaporthe oryzae, and ensures that the siRNA can effectively prevent and control the magnaporthe oryzae within a certain time; when the dsRNA and the magnaporthe oryzae spores are simultaneously inoculated to barley in-vitro leaves, the pathogenicity of magnaporthe oryzae can be inhibited, so that the purpose of preventing and treating the magnaporthe oryzae is achieved. In conclusion, a series of siRNA and dsRNA targeting the magnaporthe oryzae PEX3 gene provided by the invention can be prepared into nucleic acid pesticides, so that the magnaporthe oryzae can be efficiently prevented and treated without pollution.

The invention relates to the technical field of skin care products, in particular to an acne removal composition capable of acting on a biological membrane as well as a preparation method and application of the acne removal composition. The caesalpinia spinosa gum and the compound fermentation liquor are compounded according to a certain proportion, so that the synergistic interaction effect can be achieved, on one hand, the effect of inhibiting the formation of a propionibacterium acnes biological membrane can be better, and on the other hand, the generated propionibacterium acnes biological membrane can be disintegrated; on the other hand, the effects of removing acnes, relieving and controlling oil can be achieved; preferably, lactobacillus plantarum, lactobacillus acidophilus and lactobacillus reuteri are specifically selected for compound fermentation, so that the activity of the obtained composition is better, and the effect of inhibiting repeated acnes is more remarkable; according to the invention, reasonable active ingredient matching and a special preparation process are adopted, the effect of comprehensively inhibiting acne recurrence can be achieved through combined action of disintegration of the biological membrane dimension of generated propionibacterium acnes, relieving and oil control and adjustment of skin micro-ecological balance dimension, and the effect is more remarkable.

The invention discloses a rare earth lubricated high-speed train brake pad and a preparation method thereof. The train brake pad comprises iron and copper mixed powder, flake graphite and granular graphite mixed powder, molybdenum disulfide, alumina fibers, high-carbon ferrochrome powder, chromium powder and rare earth element powder. The prepared high-speed train brake pad is prepared through the processes of powder mixing, cold pressing forming and hot pressing sintering. The high-speed train brake pad has the outstanding advantages that the cost of raw material powder is low; the problem of dispersity caused by nano powder is avoided, the sintering densification process is also promoted by adding rare earth elements, the whole preparation process of the brake pad material is relatively simple, and large-scale production is easy; through the collaborative design of chromium and rare earth elements, the brake lining material has the capacity of self-adaptive adjustment along with the change of braking conditions. The iron-copper-based brake pad prepared through the method can be well matched with a carbon-ceramic brake disc at the speed of 400 km / h or above, and stable and high friction coefficient and wear resistance are achieved.

The invention relates to an amorphous alloy shaped charge liner and a preparation method thereof, the chemical formula of the amorphous alloy shaped charge liner is (Cu47Zr45Al8) aMb, a and b are molar ratios, and M is a rare earth element; the preparation method comprises the following steps of burdening, smelting, material ball acid pickling, die casting, cooling treatment and computer digital control processing. Compared with the prior art, the amorphous alloy shaped charge liner has both thermal stability and forming ability.

This invention discloses a method for preparing N-doped β"-AlON solid electrolyte powder, which includes the following steps: (1) Slurry preparation: weigh anhydrous ethanol and dispersant, add the dispersant to anhydrous ethanol and stir evenly to obtain a mixed solution, then weigh aluminum source powder, lithium source powder, sodium source powder and nitrogen source powder to obtain a mixed powder, add the mixed powder to the mixed solution and stir thoroughly until the mixture is evenly mixed to obtain a mixed slurry; (2) Grinding to prepare precursor slurry: grind the mixed slurry thoroughly to obtain a precursor slurry; (3) Spray drying: spray dry the wet-ground precursor slurry to obtain spray-dried powder; (4) Calcination: calcine the spray-dried powder in a nitrogen atmosphere, and keep warm after calcination to obtain N-doped β"-AlON powder.

This invention relates to the field of garment care devices, specifically providing a trouser crease care device. It aims to solve the problem that existing clamp-type garment care cabinets often cannot accommodate trousers of different lengths, resulting in poor crease formation on trousers that are not properly compressed. To this end, the trouser crease care device of this invention includes a support frame, an upper hanging rod, and a lower hanging rod assembly. The upper hanging rod is connected to the upper end of the support frame and extends horizontally. The lower hanging rod assembly is movably connected to the lower end of the support frame and is configured to clamp the lower end of the trousers and pull it away from the upper hanging rod, thus tightening the trousers. Through this configuration, the trouser crease care device can accommodate trousers of different lengths and, through the upper and lower hanging rod assemblies, tightens folded trousers, thus forming a good crease.

The present invention relates to a refrigeration and freezing device and a drawer assembly thereof. The drawer assembly comprises: a sealed barrel with a front opening, comprising a barrel body and a barrel cover; a tray, configured to be inserted into the bottom of the sealed barrel through the front opening in a push-pull manner; and a drawer, carried on the tray and configured to be inserted into the sealed barrel in a push-pull manner together with the tray, the drawer having a drawer body and a front end plate arranged at the front side of the drawer body. The tray has a head located outside the sealed barrel when the drawer is in a fully closed state, and an airtight seal is formed between the head of the tray and the drawer, between the head of the tray and the front end of the bottom plate of the sealed barrel, between the front end plate and the front end of the barrel cover of the sealed barrel, and between the barrel body and the barrel cover by a sealing member, so as to form a closed storage space inside the drawer when the drawer is in a fully closed state, which is not only convenient for the manufacture, maintenance or replacement of various components, but also can form a better effect and a higher level of sealing inside the drawer.

The application belongs to the field of biomedical materials and biomedical engineering technology, and discloses a DFO@GMs-pDA / PN composite scaffold for promoting vascularization and osteogenesis, and a preparation method and application thereof. The DFO@GMs-pDA / PN composite scaffold for promoting vascularization and osteogenesis is constructed by using electrospinning, pDA modification and emulsification-extraction technology, and by wrapping DFO into GMs and loading the DFO into a pDA surface modified PN electrospinning film. The most superficial DFO@GMs begin to disintegrate and release DFO after implantation, and the maximum drug release rate is reached after 48 hours, so as to promote the ingrowth of new blood vessels, the recruitment of stem cells and the secretion and presentation of related factors in the early stage of bone regeneration, and to provide an important blood supply basis for bone regeneration.

The invention relates to the technical field of metformin hydrochloride tablet preparation, and discloses a metformin hydrochloride tablet and a preparation method thereof.The preparation method of the metformin hydrochloride tablet comprises the following specific steps of raw material preparation, auxiliary material selection, preparation, granulation, tabletting and quality detection. According to the metformin hydrochloride tablet and the preparation method thereof, the metformin hydrochloride raw material and the auxiliary materials are mixed in three times, and the results of the second time mixing and the third time mixing are evaluated, so that the mixing effect is effectively improved; according to the metformin hydrochloride tablet and the preparation method thereof, the metformin hydrochloride raw material and the auxiliary material are sieved to ensure that the particle size of the metformin hydrochloride raw material is close to that of the auxiliary material, so that the metformin hydrochloride raw material and the auxiliary material can be mixed more uniformly; therefore, the dissolution rate is improved in an auxiliary manner.

The invention discloses a device and a method for manufacturing a polymer pipe hole. The device comprises a laser, a clamp and an air nozzle, the laser is used for ablating the polymer pipe to manufacture a polymer pipe hole; the clamp is used for fixing the polymer pipe; the gas nozzle is used for spraying protective gas in the process of ablating the polymer pipe by the laser; the clamp is of a symmetrical structure and comprises a fixing hole, a containing groove and a fixing pin. The fixing holes are formed in the two sides of the clamp and used for fixing the clamp to a using platform. The placing groove is formed in the direction from the upper surface of the clamp to the bottom surface of the clamp, the placing groove is in a V shape, and the included angle of the V shape is 60 degrees; the fixing pin is movably arranged on the upper surface of the clamp and used for fixing the macromolecule pipe. By means of the device and the method, combined holes or holes with gradients are machined, and the clinical effect is improved.

The present application relates to a kind of new type of wall protection mud material for ultra-deep underground continuous wall and its preparation method, comprising the following steps: pour mixing water into the first container, while adding bentonite, the first container is stirred to be uniformly dispersed;Sodium carbonate, sodium carboxymethyl cellulose, xanthan gum and silicone acrylic emulsion are mixed and added to mixing water and poured into the second container, and stirred to be fully hydrated;Mix the solution in the first container and the second container, stir to be fully mixed, complete mud preparation.The beneficial effects of the present application are: it can avoid the hidden troubles such as excessive lateral earth pressure, large amount of mud loss, thin and dense mud skin cannot be formed when the excavation depth of underground continuous wall is large, configure a new type of modified bentonite wall protection mud with suitable physical stability and chemical stability, appropriate relative density, good mud skin forming property, which can adapt to the working condition of ultra-deep underground continuous wall, avoid the occurrence of hole collapse and shrinkage phenomenon, so as to ensure the quality of slotting and construction safety.

The application discloses a preparation method of a barrier antibacterial TPU composite film. Graphene oxide is prepared by using an improved hummers method, fluorinated graphene is prepared by using hydrofluoric acid as a fluorine source, the fluorinated graphene is used as a carbon source, and fluorinated graphene quantum dots are prepared under the action of an oxidant and an alkaline condition. Chitosan is dissolved in an acetic acid solution and reacts with the FGQDs under the action of dodecanol to form a barrier antibacterial agent CS / FGQDs. The TPU composite film produced by using the barrier antibacterial agent not only has a certain improvement in antibacterial performance, but also has improved barrier performance, and can generate great social and economic benefits.

The application belongs to the technical field of laser glass and optical fiber, and discloses a neodymium-doped near-infrared broadband emission germanate glass as well as a preparation method and application thereof.The neodymium-doped near-infrared broadband emission germanate glass comprises, in terms of molar percentage, 20-40% of R2O / RO, 5-15% of Nb2O5, 60-75% of GeO2, and the total percentage of the above components is 100%, and 0.5-1.5% of Nd2O3 is doped outside; R is another metal element.The glass has the advantages of easy preparation, wide fluorescence half-height width, good anti-crystallization stability and the like, and can be used in a high-peak-power and high-energy-pulse laser medium.

The invention discloses a communication protocol information short-distance transmission method, which comprises the following steps of: constructing an antenna element array at a site to finish signal base station construction, capturing an electromagnetic wave band propagating in the air in an omnidirectional or directional manner through antenna element beam forming, preferably selecting an electromagnetic wave band suitable for enhancement, and responding to the electromagnetic wave band. The signal processing unit is used for processing the electromagnetic wave band to obtain the target signal, the signal processing unit is used for improving the quality of the electromagnetic wave band to obtain the target signal, and the target signal is output to the target equipment through the antenna element array, so that the problems that signal scattering and attenuation are easily intensified by increasing signal power in the prior art are solved; and the use of a specific frequency is limited by an on-site electromagnetic environment, so that a frequency band which is not interfered at all is difficult to find.