34results about How to "Play an inhibitory effect" patented technology

The invention belongs to the technical field of laying of submarine pipeline facilities and relates to a submarine pipeline buckle arrestor with guide plates. The submarine pipeline buckle arrestor is used for fixing a submarine pipeline and comprises a pair of upper and lower valve shells, at least two groups of brackets and four guide plates, wherein the two groups of brackets are used for supporting the buckle arrestor and the submarine pipeline; the inner diameters of the two valve shells are the same with the outer diameter of the submarine pipeline; a lateral wing eye plate used for fixing the upper and lower valve shells at the outer part of the submarine pipeline is respectively arranged at two sides of each valve shell; the four guide plates are arranged at the outer side of the buckle arrestor; and one end of each guide plate is fixed on the upper valve shell or the lower valve shell, and the other end of each guide plate is fixed on the lateral wing eye plate. In the invention, two-in-one design is utilized, therefore, the construction process is simplified, the cost is lowered, buckle propagation and vortex induced vibration of the submarine pipeline are effectively controlled, and the integration purposes of economy and safety are achieved.

The invention discloses a novel sliding mode prediction fault tolerant control method for actuator failure of a variable time delay control system. A sliding mode prediction fault tolerant control method based on whale optimization algorithm is designed for the problem of fault tolerant control of four-rotor systems with discrete time delay uncertainties. The whole-process sliding mode surface isused as a prediction model to ensure the global robustness, and a power function reference trajectory with failure compensation is designed to suppress the uncertainty and failure while reducing the influence of buffeting. In the process of rolling optimization, considering the requirement of high-precision and fast response of the optimization process, the whale optimization algorithm is adoptedto have strong optimization performance, less parameter setting, fast convergence and high precision. The novel fault tolerant control method provided by the invention is applied to robust fault tolerant control of a class of uncertain discrete systems with time-varying delays.

The invention relates to a composite metal lithium negative electrode, a preparation method thereof and a lithium battery. The preparation method of the composite metal lithium negative electrode comprises the following steps: preparing a porous film-shaped carbon layer; carrying out lithiation treatment on the porous film-shaped carbon layer; compounding lithium metal with the porous film-shapedcarbon layer subjected to lithiation treatment to obtain a composite lithium metal negative electrode, wherein in the composite metal lithium negative electrode, the porous film-shaped carbon layer subjected to lithiation treatment forms a lithiation carbon skeleton, and metal lithium precipitates are attached to the carbon skeleton to form a lithium ion interconnection and intercommunication network channel in the charging and discharging process. According to the composite metal lithium negative electrode, a negative electrode current collector is not used, so the content of negative electrode metal lithium is increased, the volume change of the metal lithium negative electrode in the charging and discharging process can be greatly relieved due to the existence of the carbon skeleton, the mass/volume energy density of a lithium battery can be increased, and the cycle performance and safety performance of the battery are improved; meanwhile, the electrode has a high specific surface area, so the rate capability of the battery can be improved.

The invention discloses an LED screen test power supply control circuit and method based on a precise quantized power-on sequence. The control circuit includes an MCU of which the output end is connected with a DC/DC power supply module and a DAC (Digital-to-Analog Converter). The output end of the DAC is connected with the negative input end of an operational amplifier AMP1. The positive input end of the operational amplifier AMP1 is connected with a voltage divider circuit. The output end of the operational amplifier AMP1 is connected with one input end of an MOS tube. The output end of the DC/DC power supply module is connected with the other input end of the MOS tube. A third end of the MOS tube is an output end which outputs a voltage Vout. The DAC inputs a voltage control waveform to the operational amplifier AMP1 under the control of the MCU, and the voltage control waveform includes the voltage value and the power-on time Tset required by an LED screen power supply. The operational amplifier AMP1 linearly amplifies the received voltage control waveform, and outputs the amplified voltage control waveform to the MOS tube. The DC/DC power supply module outputs a voltage Vdc to the MOS tube under the control of the MCU.

The invention discloses application of dioscin in preparing a drug-resistant osteosarcoma medicine. Drug-resistant osteosarcoma refers to an osteosarcoma cell line which has drug resistance to commonanti-tumor medicines, particularly U2OS tumor cells with drug resistance to methotrexate, doxorubicin and cis-platinum. Moreover, as a natural plant extract medicine, dioscin has wide application prospects in the field of anti-tumor medicine treatment.

The invention discloses thermal insulation mortar with long service life. The thermal insulation mortar is prepared from, by weight, 1-2 parts of melamine, 0.3-1.8 parts of sulfamic acid, 2-3 parts of sodium fluosilicate, 10-16 parts of calcium carbonate, 1-2 parts of polyvinyl alcohol, 10-15 parts of carborundum, 10-15 parts of coal cinder powder, 4-6 parts of ground pumice, 45-55 parts of cement, 10-12 parts of microcapsule thermal storage and insulation materials, 3-5 parts of ramie, 0.2-0.4 part of calcium formate, 0.5-1 part of hydroxypropyl methyl cellulose, 1-3 parts of glass fiber, 2-4 parts of wood flour and an appropriate amount of water.

The invention discloses an antibacterial wound dressing based on a visible light up-conversion material and a preparation method of the antibacterial wound dressing. The dressing takes a chitosan filmas a carrier, a large number of Y2SiO5: Pr < 3 + > and Li < + > particles are embedded in the chitosan film. The dressing utilizes a large number of amino groups on a natural polymer material chitosan (CTS) to kill bacteria, and a rare earth up-conversion material is added on the basis. As a unique optical material, the rare earth up-conversion material can realize anti-Stokes luminescence, continuously absorb two or more low-energy photons to transition to a higher energy level, and when the photons return to the ground state, they can emit short-wavelength visible or ultraviolet light.

The invention discloses an embedded airborne infrared image visual navigation positioning method, which comprises the following steps of: 1, reading an infrared original image f (x, y) acquired by a camera, and processing the image by using a background suppression algorithm to obtain a corrected image f1 (x, y); 2, carrying out single-frame target detection and inter-frame target detection on thecorrected image f1 (x, y) respectively, and judging detection results comprehensively to obtain a final detection result image f2 (x, y); obtaining coordinates (xc, yc, zc) of the target point in thecamera system according to the mapping relation between the camera system and the image system and the millimeter wave radar ranging result; according to the default coordinate transformation matrixT existing between the machine system and the camera system, obtaining the coordinates (xb, yb, zb) of the target in the machine system. The method has the advantages that the image quality is improved, later positioning is facilitated, the influence of high-frequency noise is avoided, and target positioning is more accurate.

The invention discloses herbal emulsion for repairing sensitive skin and a preparation method thereof. The aloe gel is prepared from the following raw materials in percentage by weight: 20-30 percent of functional components taking aloe as a main material, 2-10 percent of tannic acid modifier, 2-5 percent of dipropylene glycol, 2-5 percent of polyglycerol-10, 1.2-2.0 percent of sodium hyaluronate, 0.05-0.1 percent of tremella polysaccharide, 0.025- 0.075 percent of xanthan gum, 0.5-2 percent of hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer, 0.5-3 percent of camellia-seed oil, 0.5-3 percent of litsea cubeba oil, 0.05-0.1 percent of 1, 2-hexanediol and the balance of thermal spring water. The functional component taking aloe as a main component is obtained from extracts prepared from aloe, trehalose, radix ophiopogonis roots, opuntia streptacantha, radix sophorae flavescentis and lotus flowers; and the herbal emulsion for repairing the sensitive skin prepared by the invention has good allergy-relieving and repairing effects on the skin, is free of additives, safe and non-irritating, can attract the eyeballs of consumers, and is good in repairing effect, simple in preparation process and relatively low in preparation cost, and no herbal emulsion for repairing the sensitive skin exists in the current market.

The invention relates to the technical field of organic synthesis, in particular to a N-(5-[1,3,4]diazole-2-yl-2H-pyrazole-3-yl)-carboxamide derivative and a microwave hydrothermal synthesis method thereof, and further relates to application of the compound. A series of basic raw materials such as amine, 2,3-dicyan-opropionate, alcohol, acyl halide and the like are used for synthetizing of pyrazolecarbonitrile, pyrazolecarbonitrile is subjected to esterification, hydrazide reaction and amidation and reacts with a cyclization agent by the microwave hydrothermal synthesis method so as to obtainN-(5-[1,3,4]diazole-2-yl-2H-pyrazole-3-yl)-carboxamide derivative (including thiadiazole and oxadiazole). The derivative has good biological activity, can inhibit various bacterial stains, and has high activity in terms of bacterial resistance and insect killing; in terms of chemical structure, the derivative, according with the general formula, is synthetized, has great variety of active groups and excellent photo-physical properties, has multiple functions in the fields such as photoelectricity, medicines, pesticides, bacteriostat, diminish inflammation and virus protection, and accordinglyhas high development and application value.

The invention relates to a coating for a bathroom and a preparation method thereof, and belongs to the field of a high polymer material. The coating comprises bacteriostatic agent, resin, lithopone, water and ingredients. The bacteriostatic agent comprises dihydromyricetin, catechinic acid and resveratrol. The resin comprises thermoset acrylic resin, epoxy resin, and methyl phenyl silicone resin. The ingredients comprise silane coupling agent, lignosulfonic acid, cuprous oxide, sodium silicate and ethylene-propylene-diene monomer. The coating has strong bacteriostatic action, and can effectively avoid germ and mould breeding for extreme humidity of the bathroom. The resin, the ingredients and water are mixed at the rotate speed of 300-500 r/min, and then mixed with lithopone at the rotate speed of 600-800 r/min, and mixed with the bacteriostatic agent, thus the coating is prepared. The preparation method is simple and the process is easy to control.

The invention belongs to the technical field of cell culture, and discloses a pinctada maxima mantle cell in-vitro culture solution, a preparation method and a use method. The cell in-vitro culture solution comprises the following components: a basic cell culture medium, an isatis root extracting solution, a honeysuckle extracting solution, fetal calf serum, pearl oyster body fluid, kanamycin, a balanced salt solution and glucose. According to the invention, Chinese herbal medicines such as isatis root and honeysuckle, pearl oyster body fluid and other components are added into a basic cell culture medium, and mantle cell culture and in-vitro culture are realized through optimal proportioning of the components. The added isatis root extracting solution and honeysuckle extracting solution play a role in inhibiting harmful bacteria in the external environment in the whole culture process, and meanwhile, the growth life of cells is prolonged.

The invention discloses a lithium ion battery, an electrolyte and an additive thereof, the additive comprises at least two metal fluorides, and the metal in the metal fluorides comprises any one of lithium, sodium, potassium, rubidium, cesium and francium. According to the invention, the metal fluoride is added into the electrolyte, and in the charging process of the lithium battery using the electrolyte, the proportion of the metal fluoride component in an SEI film is increased, so that the stability of the SEI film is enhanced, inhibition of lithium dendrites is realized, the rate charge-discharge performance is improved, and in the lithium deposition process, metal ions are absorbed on the surface of lithium, so that the surface of the SEI film is prevented from being damaged. The lithium ion battery has the advantages that the lithium ion battery is not reduced, the lithium deposition which is not reduced and irregular occurs, more metal ions can be attracted to the tip part by the accumulation of charges, so that electrostatic shielding is formed, the non-uniform deposition of the lithium ions is prevented, the propagation of lithium dendrites can be slowed down, and the growth of the lithium dendrites is inhibited to a certain extent.

The invention relates to the technical field of socks, in particular to an anti-microbial and anti-skid health care sock. The anti-microbial and anti-skid health care sock comprises a sock body, wherein the bottom of the sock body is coated with a layer of silica gel layer, and a plurality of anti-skid massage strips are arranged on the silica gel layer; and the anti-skid massage strips are bonded to the silica gel layer through an adhesive. According to the anti-microbial and anti-skid health care sock, the anti-skid massage strips are utilized to massage a foot sole and can perform skid resistance on the foot sole.