43results about How to "Guarantee against loss" patented technology

The invention discloses an experimental device for fine mechanical flow field measurement for fluid and relates to an experimental device for fluid. The experimental device for the fine mechanical flow field measurement for the fluid solves the problems of difficulty in fluid storage, complexity in component change and difficulty in mechanical distortion flow field measurement for complex fluid of an existing testing system and provides the comprehensive experimental device capable of realizing fine measurement. According to the experimental device for the fine mechanical flow field measurement for the fluid, a tail water tank (1), a water pump set (2), a flow rate monitoring device, a steady flow flange grid (6), a telescopic joint (10) and a model device (9) to be measured are connected in sequence to form a closed circulating detection passage, a trace particle adding mechanism (12) is arranged between the water pump set (2) and the flow rate monitoring device, the fluid storage system (8) is connected with the flow rate monitoring device, a fine flow field testing system (11) is arranged at the lateral surface of the model device (9) to be measured, and a dynamometer (14) is co-axially arranged above the model device (9) to be measured. The experimental device for the fine mechanical flow field measurement for the fluid is used for fluid experiment.

The invention relates to a kelp extractive nutrition enhancer and a preparation method thereof, which belong to the science and technology field of food. The kelp extractive nutrition enhancer is stable in product quality and rich in nutrition; and the preparation method of the kelp extractive nutrition enhancer is simple in production technology, high in yield and low in cost. The kelp extractive nutrition enhancer provided by the invention comprises the following components in percentage by weight: 25.0%-35.0% of kelp extractives, 45.0%-59.5% of protein powder, 10.0%-15.0% of maltodextrin, 2.0%-5.0% of nutrition yeast powder and 0.5%-1.0% of an antioxidant. The kelp extractive nutrition enhancer provided by the invention is reasonable in component compatibility, low in production cost, rich in nutrition ingredient, less prone to moisture absorption and caking and good in stability, and can be taken as a favorable food nutrition enhancer.

The invention discloses a pressure bearing pipe damage repair process. The process is performed by the following steps: a carbon fiber fabric (4), a repair agent, adhesive, a torque spanner (15) and a tensioning device (1) are prepared; the damage positioning is performed for a pressure bearing pipe (5), and an obstacle is removed; a foreign matter at a damage part is removed, and an area to be repaired is determined; after the repair agent is coated on the area to be repaired, the adhesive is coated; the carbon fiber fabric (4) is bonded on the adhesive, and the left and right ends of the carbon fiber fabric (4) are tightened by the tensioning device (1); the torque spanner (15) is clamped on a shaft head (10), and is wrenched to enable a finger of a dial (16) to reach preset torsion; all locking screws (3) are tightened, and the prestress of the carbon fiber fabric (4) is constant; the adhesive is uniformly coated on the surface of the carbon fiber fabric (4); and after the adhesive reaches the stated condensation period, the tensioning device (1) is disassembled to finish one-time repair process.

The invention relates to a compressed sensing theory based broadband DOA estimation algorithm of an RSS algorithm, and belongs to the fields relates to array signal processing and radar detection. Under the condition that there is no information loss, signals are sampled at the speed much lower than that is required by a Nyquist sampling theorem, and the signals can be recovered completely. Data in different frequency points and reference frequency points can be shared, pre-estimation of orientation is avoided, and the estimation precision is improved. The compressed sensing theory is combinedwith DOA estimation, a focusing ideal is used to divide a broadband signal equally to narrowband signals, a narrowband ideal is used for solving, and thus, the large computational complexity of original broadband estimation is greatly reduced. The estimation precision is improved on the premise of same sampling.

The invention discloses a measurement and control system capable of isolating strong impulse interference. The measurement and control system comprises a pressure transmitter, an isolating circuit and a collecting system. The pressure transmitter is connected with a discharging cavity, and is used for measuring the pressure of the gas inside the discharging cavity when a discharging circuit discharges for the gas inside the cavity. The isolating circuit is connected with the output end of the pressure transmitter, and is used for sampling output electrical signals to electrically isolate input signals from the output signals and to achieve linear conversion between the input signals and the output signals. The collecting system is connected with the output end of the isolating circuit, and is used for collecting clear signals output by the isolating circuit to a computer system, and the clear signals are displayed through measurement and control software. According to the measurement and control system, interference signals coupled to a testing signal transmission line are isolated in the period of discharging to high-power impulses, and therefore the amplitude of the interference of strong impulses is effectively reduced, the damage to a testing system from the strong impulse interference signals is prevented, and the signals cannot lose. The measurement and control system has the advantages of being compact and ingenious in structure, safe, reliable, convenient and fast to use and the like.

The invention discloses a traditional Chinese medicine composition with an antiviral effect. The traditional Chinese medicine composition is prepared from the following raw materials: herba pogostemonis, herba elsholtziae and rhizoma polygonati which serve as monarch drugs, folium perillae, amomum tsao-ko, poria cocos, pericarpium citri reticulatae and radix fici simplicissimae which serve as ministerial drugs, and radix platycodonis, ginger, fructus jujubae, flos lonicerae, folium eriobotryae, folium mori, semen raphani and radix glycyrrhizae which serve as adjuvant drugs. The invention further discloses a preparation method of the traditional Chinese medicine composition and application of the traditional Chinese medicine composition in resisting novel coronavirus or influenza virus. Theraw materials selected by the traditional Chinese medicine composition are common traditional Chinese medicines, so that the traditional Chinese medicine composition is high in safety and suitable for people with contact risk, epidemic risk or potential novel coronavirus (COVID-19) and influenza virus infection and healthy people to take in a preventive manner. The preparation process disclosed by the invention adopts a volatile oil inclusion technology, so that aromatic components are fully retained, and the method is simple and efficient and suitable for industrial production.

The invention discloses a strong-flavor type hot-pressing and refining small unit process which combines a hot-pressing process and a refining process together. An edible fat and oil raw material is conveyed to an oil press for pressing after high temperature modification, and after pressing, an oil cake is delivered to a leaching workshop for leaching and preparation of edible fat and oil or to a cake warehouse for storage and subsequent usage; pressed crude oil is sent to a special filter used for pressing for primary filtering, and filtered crude oil enters into an oil refining kettle for removal of colloid and other organic impurities; degummed oil enters into a drying tank; a vacuum environment is formed in the drying tank in virtue of a vacuum pump, and edible oil is subjected to low temperature vacuum dehydration in the drying tank, so it is guaranteed that strong flavor of the edible oil does not lose; volatile impurities are separated by using a separator; and dehydrated edible oil is conveyed to another special filter for secondary filtering. The process employs two special filters which carry out filtering alternately, so high-quality strong-flavor edible oil is obtained and continuous production of equipment is guaranteed.

The invention provides a rapid evaluation method for a shale oil saturation well site, and aims at the situation that a rock core is just taken out of a barrel on a drilling site but not limited to the site, and can also be realized in a laboratory. The method comprises the following steps: sequentially carrying out one-dimensional low-field high-frequency nuclear magnetic resonance measurement onblocky ground original, blocky self-absorption water saturation and freeze-crushing manganese saturation state samples to obtain a ground original oil-water total signal containing a substrate (solid-phase organic matter), a saturated water-state oil-water total signal and an oil signal; carrying out rapid oil washing, salt washing and drying treatment on the plurality of samples subjected to three times of nuclear magnetic measurement, and then carrying out one-dimensional nuclear magnetic resonance measurement one by one to obtain a substrate signal of each sample; combining the four nuclear magnetic resonance measurement signals to obtain the total porosity of the shale and the oil saturation of the ground; and finally, obtaining the shale oil saturation under the stratum condition through a stratum saturation recovery algorithm. Parameters such as physical properties and oiliness of shale oil can be rapidly and accurately obtained through four times of one-dimensional low-field high-frequency nuclear magnetic resonance measurement of an on-site rock core.

The present application discloses a surface wave suppression method for wide-azimuth seismic data. The method includes: step 101, in the detection point domain, adopt surface wave analysis, simulation and inversion to carry out surface wave suppression on seismic data; Surface wave suppression; step 103, in the shot domain, perform surface wave suppression on the result of step 102 by non-uniform coherent noise suppression, so as to suppress the remaining weak energy part of the surface wave, and obtain the processed seismic data. The application of the invention can well suppress the surface wave interference of wide-azimuth seismic data, improve the signal-to-noise ratio of the data, and at the same time ensure that low-frequency effective signals are basically not lost, laying a good foundation for subsequent processing and reservoir inversion.

The invention discloses a binary classification oriented factor screening method based on boosted regression trees. The method comprises the following steps that: (1) searching data, and establishinga target variable-predictive factor dataset; (2) on the basis of the target variable and all factors, utilizing the boosted regression trees to carry out modeling, and calculating and sorting factor importance; (3) carrying out correlation analysis on all factors, analyzing a Pearson correlation matrix, and carrying out screening; (4) on the basis of the target variable and the retained factor, utilizing the boosted regression trees to establish a new model, calculating a predictive deviation, calculating and sorting the factor importance, and removing the factor with the lowest importance until the amount of the retained factors is less than or equal to 2; and (5) comparing the predictive deviation of each boosted regression tree model in the (4), and taking all factors adopted by the boosted regression tree model with the smallest predictive deviation as an optimal factor combination. By use of the method, a quantitative factor selection system is established, results are reliable, and an application field is wide.

A blind rivet element for fastening to a workpiece which has a particularly preformed hole comprising a sleeve body and a bolt element guided through the sleeve body, the blind rivet element being insertable into the hole of the workpiece and the sleeve body being deformable in sections relative to the sleeve body by an axial movement of the bolt element to fasten the blind rivet member to the workpiece. The sleeve body has at least one contact portion which is arranged and configured such that the contact portion cuts into a wall of the hole and / or a region around the hole and / or a deformation of the wall of the hole and / or the area around the hole in particular in order to make an electrical contact between the workpiece and the blind rivet element.

The invention discloses an ultra-light C/C-SiC space reflector, which comprises a C/C composite material, a SiC gradient transition layer embedded in the surface of the C/C composite material, and a graphene SiCNWs multi-dimensional hybrid enhanced CVD-SiC coating arranged on the surface of the SiC gradient transition layer. The invention also discloses an application of the preparation method ofthe ultra-light C/C-SiC space reflector. According to the method, the PC-SiC transition coating is prepared on the surface of the ultralight C/C composite material, the thermal stress generated by thermal expansion mismatch of the mirror CVD-SiC coating and the C/C matrix is reduced; besides, the graphene-wound SiC nanowire reinforcement grows on the surface of the embedded SiC coating through a one-step CVD method, that is, the interface bonding between SiCNWs and the CVD-SiC matrix is improved, and further the effect of the single SiCNWs reinforced CVDSiC optical coating is improved by virtue of the excellent mechanical property of the graphene.

The invention provides a preparation method of an antibacterial peptide of cyclina sinensis. The preparation method of the antibacterial peptide of the cyclina sinensis comprises the following steps: pretreatment: decladding the cyclina sinensis to take cyclina sinensis flesh, chopping the flesh, putting the flesh into treatment liquid for soaking, then carrying out washing and homogenating, and adding deionized water and a hydrochloric acid solution to adjust the pH value; enzymolysis: adding 0.5 to 1 percent of compound enzyme by weight into the cyclina sinensis for hydrolysis and carrying out enzyme deactivation; centrifugation: centrifugating cyclina sinensis enzymatic hydrolysate, taking supernate, adding 0.1 to 0.3 percent of a precipitation agent by weight into the supernate, and carrying out stewing and filtering; cryopreservation: the compound enzyme is prepared from the following components in parts by weight: 5 to 10 parts of pepsase, 2 to 3 parts of neutral protease, 1 to 3 parts of papain and 0.5 to 2 parts of caspase. The extracting step is simple, and the extracting rate is high; the extracted antibacterial peptide is excellent in effect, has no immunogenicity, is good in absorption effect and has a wide use range.

The invention relates to the technical field of hot dipping, in particular to a hot dipping covering agent. The hot dipping covering agent comprises the following components in percentage by weight: 5-15 percent of KF, 15-25 percent of LiCl, 20-30 percent of KCl, 5-10 percent of ZnCl2 and 35-40 percent of NaAlF6. The covering agent is prepared by the following steps of: mixing the components according to percentage by mass and grinding the mixture with a mortar until the particle size of the covering agent is less than or equal to 2.0 millimeters; putting the mixture into a baking box; and drying the mixture at the temperature of 120 DEG C for 30 minutes. The particle size of the hot dipping covering agent is less than or equal to 2.0 millimeters, the melting point is between 440 DEG C and 460 DEG C, and the density is between 1.5765 g/cm<3> and 2.1207 g/cm<3>. The hot dipping covering agent is suitable for hot dipping of a zinc high-aluminum alloy, a zinc alloy or an aluminum alloy.

The invention discloses a chili sauce and a preparation method thereof. The chili sauce is prepared from the following raw materials: yellow radishes, chilies, melon seed oil, salt, vinegar and garlic. Compared with the prior art, the invention has the following advantages: the yellow radish has the functions of helping digestion, reducing phlegm and relieving asthma, clearing heat and guiding qi downward, and diminishing swelling and dissipating blood stasis, and can relieve the discomfort of spicy eating on the body, slow down excessive internal heat and increase appetite at the same time; and the melon seed oil is adopted to ensure that vitamins contained in the chilies are not lost and the chilies are rich in nutrition.