140results about How to "Effective reflection" patented technology

The invention provides a petrochemical pipeline corrosion defect detection device and method, and relates to the field of pipeline defect detection. The detection device comprises a mounting plate, and further comprises a battery box mounted on one side of the mounting plate, and the extension structure comprises a transmission assembly arranged on one side of the mounting plate, a rotating frame rotationally connected to the outer side of the transmission assembly and a push arm rotationally connected to the outer side of the transmission assembly and rotationally connected with the rotating frame; a connecting wire connected with the controller is mounted on one side of the electromagnetic ultrasonic thickness measuring probe; the servo motor drives the lead screw to rotate, the moving frame drives the rotating frame to turn over, meanwhile, the auxiliary wheels and the moving wheels are tightly attached to the interior of the pipeline, the size adjusting function is achieved, the device can easily adapt to pipelines with different inner diameters so as to deal with various complex working conditions, the universality and flexibility of the detection device are enhanced, and the detection efficiency is improved. The problem that the size of a pipeline corrosion detection device in the prior art is inconvenient to adjust is solved.

The invention provides a preparation method of an ETFE fluorofilm plate with excellent comprehensive performance, and belongs to the technical field of manufacturing of high-performance building materials. According to the preparation method, a metal plate plated with an aluminum-zinc alloy film layer serves as a substrate, and the upper surface and the lower surface of the substrate are each provided with a composite plating layer. The composite coating comprises a silicon dioxide-carbon tube coating, an indium tin oxide coating, a wear-resistant layer, an ETFE fluorine film layer and a wear-resistant hydrophobic layer. The ETFE fluorine diaphragm plate prepared by the method not only has excellent corrosion resistance and excellent heat insulation performance, but also has good scratch-resistant protection and weather resistance, and particularly, the coated wear-resistant hydrophobic layer effectively reduces the adhesion of moisture on the surface of the diaphragm plate, improves the self-cleaning performance of the diaphragm plate, reduces the maintenance cost, and is suitable for large-scale popularization and application. The introduction of the layer not only protects the surface of the film, but also enhances the stability of the film in the long-term use process. The ETFE fluorine film plate prepared by the method is suitable for various high-performance building requirements, and shows a wide application prospect.

The invention discloses a low-smoke-density high-temperature-resistant halogen-free special flame-retardant optical cable, which comprises a cable core, an inner sheath and a fireproof layer from inside to outside, and is characterized in that the fireproof layer comprises a fireproof layer made of a ceramic silicone rubber material; the cable core comprises optical fibers, a loose tube, a reinforcing piece and an internal flame-retardant thermal insulation layer, the reinforcing piece is located in the center of the cable core, the optical fibers are arranged in the loose tube to form an optical fiber unit and surround the reinforcing piece, the internal flame-retardant thermal insulation layer comprises water-blocking yarn and a calcined mica tape, and the space between the optical fiber unit and the reinforcing piece is filled with the water-blocking yarn. And the optical fiber units, the reinforcers and the water-blocking yarns are wound by the calcined mica tape in a multi-layer and multi-pitch manner. According to the invention, the ceramic silicone rubber material is adopted and is ceramized in a flame state or at a high temperature of more than 500 DEG C to form an oxygen barrier layer, so that a flashover phenomenon in the cable is prevented; ointment is removed from the structure, and the water-blocking yarn and the calcined mica tape are used for blocking water, so that smoke in the combustion process is reduced, and the harm to personnel is less under the condition of fire hazard.

The invention relates to the technical field of data processing, in particular to a data asset sharing method and system for multi-source heterogeneous data sources. The method comprises the following steps: firstly, clustering all displayed advertisements according to a difference condition of user characteristic indexes of all displayed advertisements and a difference condition of advertisement query durations to obtain each cluster; according to the numerical value distribution condition of each to-be-dimensionally-reduced index in all the clustering clusters, obtaining the retention metric of each to-be-dimensionally-reduced index; and according to the retention metric of each index to be subjected to dimensionality reduction, performing dimensionality reduction on the data set to be subjected to dimensionality reduction, obtaining a dimensionality-reduced data set of the advertisement category, and performing data resource sharing. According to the method, reasonable dimension reduction is carried out on the data set to be subjected to dimension reduction by fully considering the user preference condition influencing the advertisement effect, so that the data set after dimension reduction can effectively reflect the advertisement effect, and the value of data resource sharing is guaranteed.

The invention relates to a remote sensing satellite earth observation effectiveness evaluation method, belongs to the field of engineering technology, solves the problem of how to accurately evaluate the remote sensing satellite earth observation effectiveness, and includes: constructing a remote sensing satellite earth observation effectiveness evaluation index system, obtaining target data composed of original data, meteorological condition correction coefficients and space environment correction coefficients; obtaining the target data secondary evaluation index score according to the secondary evaluation index scoring requirements of the remote sensing satellite earth observation effectiveness evaluation index system; inputting the target data secondary evaluation index score and the secondary evaluation index weighting coefficient into the secondary evaluation index aggregation model, and aggregating to form the target data primary evaluation index score; inputting the target data primary evaluation index score and the primary evaluation index weighting coefficient into the primary evaluation index aggregation model, and aggregating to form the remote sensing satellite earth observation effectiveness evaluation result. The invention improves the scientificity, accuracy and practicality of the remote sensing satellite earth observation effectiveness evaluation.

The utility model discloses a fluoroplastic insulating high-temperature-resistant fireproof cable, which comprises a cable core, the cable core comprises eight wire cores which are annularly distributed at equal intervals, each wire core is composed of an inner sheath and a conductor, a composite insulating outer layer is wrapped outside the cable core, the composite insulating outer layer is composed of a contact layer, a buffer layer and a reinforcing layer, and the contact layer is wrapped outside the buffer layer. A composite high-temperature-resistant layer is arranged outside the composite insulating outer layer, the composite high-temperature-resistant layer is composed of a high-temperature-resistant base material, a heat reflecting layer and a heat-resistant protective layer, and the composite high-temperature-resistant layer is wrapped with an outer sheath. The problems of cable stability, flame-retardant and fireproof performance, electrical performance, chemical corrosion resistance and large-current transmission capability in a high-temperature environment are solved.

The invention relates to a quick-dry cooling textile integrating flame retardance, antibiosis, radiation cooling and evaporative cooling as well as preparation and application of the quick-dry cooling textile, and belongs to the technical field of functional finishing of textiles. The preparation process is simple, the cost is low, and the prepared textile has good flame retardance, antibiosis, one-way moisture conduction and cooling performance and can be applied to the fields of personal heat management, fire protection, building cooling, antibiosis and the like.

The invention relates to a model construction method, system and device for flood forecasting of a small water conservancy facility, and the method comprises the steps: obtaining original water conservancy data of a target drainage basin of the small water conservancy facility, and carrying out the analysis of the drainage basin, and obtaining the corresponding hydrometeorological data; obtaining geographic data, and carrying out feature parameter analysis to obtain a corresponding drainage basin feature parameter set; acquiring facility information, and performing parameter setting on a preset WRF-Hydro model in combination with the drainage basin feature parameter set to obtain an initial flood model; performing multi-target parameter calibration processing on the initial flood model according to the hydro-meteorological data to obtain a flood forecasting model; performing scene simulation on the flood forecasting model to obtain a scene simulation result; and optimizing the flood forecasting model according to the model optimization parameters to obtain an optimized flood forecasting model. According to the method, the flood forecasting precision can be improved, and a more reliable basis is provided for disaster prevention and reduction.

The invention belongs to the technical field of textiles and garments, relates to a texture rating technology, is used for solving the problem that an accurate texture prediction model cannot be established only by depending on factor analysis in the prior art, and particularly relates to a fabric texture evaluation analysis system and method and a storage medium. The evaluation analysis platform is in communication connection with an attribute test module, a perception analysis module, a factor analysis extraction module, a model training module and a texture rating module; the attribute testing module is used for carrying out comprehensive physical attribute testing on the sample fabric and obtaining corresponding attribute parameters; the factor analysis and extraction module is used for extracting common factors according to physical attributes; according to the method, the multi-dimensional objective attribute data is simplified into a small number of common factors by adopting a factor analysis method, and the common factors can effectively reflect the main characteristics of the texture of the fabric by utilizing a regression equation, so that individual differences and evaluation deviations caused by purely relying on subjective scoring are avoided.

The invention provides a porous radiation refrigeration flexible film as well as a preparation method and application thereof, the preparation method comprises the following steps: (1) mixing a NaCl saturated aqueous solution with ethanol, then carrying out ultrasonic treatment on the mixed solution, then centrifugally collecting NaCl to separate out crystals, and drying to obtain superfine NaCl particles; and (2) mixing a PDMS precursor with a curing agent to obtain a PDMS mixed solution, mixing the PDMS mixed solution with the superfine NaCl particles, pouring the mixture into a mold, curing, immersing in a water bath to remove NaCl, and drying to obtain the porous radiation refrigeration flexible film. NaCl particles with small particle size and narrower particle size distribution are prepared by adopting an ultrasonic precipitation method; the porous PDMS film prepared by taking the NaCl particles as a sacrificial template has a better radiation refrigeration effect.

The utility model discloses a box body and storage equipment, and belongs to the technical field of household appliances. The box body comprises: a housing; the inner container is installed in the shell, forms a chamber and is provided with first to fifth inner walls, the first to fourth inner walls are sequentially connected end to end and are all adjacent to the opening of the inner container, and the fifth inner wall is opposite to the opening of the inner container; the heat preservation layer is located between the shell and the inner container; the inner decoration plates are made of metal materials, and the first inner wall and the third inner wall are both provided with the inner decoration plates; the light source assembly comprises an area light source, is installed in the inner container and is located between the first inner wall and the third inner wall. The first inner wall and the third inner wall are each provided with a first protrusion for supporting the partition plate, a first installation space for installing the drawer is formed between the first protrusions and the fourth inner wall, and the interior trim panel is connected with the first protrusions. By means of the structure, interference of the interior trimming panel and the area light source in position layout is reduced, shadows and dark areas are reduced, and the interior of the storage equipment is brighter and clearer.

The invention provides an enhanced stress-resistant hollow-core anti-resonance optical fiber, and the optical fiber comprises a plurality of supporting bodies which are arranged between an outer cladding layer and an inner cladding layer in an annular array. The inner wrapping layer comprises a first hollow glass tube, the fiber core area is wrapped by the first hollow glass tube, and the outer side of the first hollow glass tube is tangent to the supporting body. According to the invention, the plurality of supporting bodies are designed, so that mechanical stress applied by the outside can be effectively dispersed, and structural deformation of the inner cladding due to stress concentration is avoided; meanwhile, the first hollow glass tube is designed, so that low-loss transmission of light waves within a specific wavelength range is realized; in combination with the high-strength outer cladding, the optical fiber structure can still keep stable optical performance and structural integrity in severe environments of bearing external pressure, bending, vibration and the like.

The invention discloses a novel anti-dazzle bionic honeycomb film layer lens which comprises a base layer, a first high-refractive-index layer arranged on the inner side of the base layer, a second low-refractive-index layer arranged on the outer side of the base layer, a first low-refractive-index layer arranged on the outer side of the first high-refractive-index layer, and a hardening layer arranged on the outer side of the first low-refractive-index layer. A second high-refractive-index layer is arranged on the outer side of the second low-refractive-index layer, an anti-reflection layer is arranged on the outer side of the second high-refractive-index layer, a honeycomb net-shaped film layer is arranged on the outer side of the anti-reflection layer, and a waterproof layer is arranged on the outer side of the honeycomb net-shaped film layer. According to the novel anti-dazzle bionic honeycomb-shaped film layer lens and the preparation method thereof, the lens can effectively reflect and filter strong light passing through the lens, the light intensity can be reduced, damage of the strong light to eyeballs is reduced, and it can be guaranteed that eyes are comfortable when people see things under the burning sun.

The invention provides a display device and a preparation method thereof, and belongs to the technical field of semiconductors. The display device comprises a driving back plate, an insulating reflecting layer, an electrode layer and a plurality of pixel units, the plurality of pixel units are respectively bonded on the driving backboard, the plurality of pixel units are arranged at intervals, each pixel unit comprises an epitaxial layer and a passivation layer, the epitaxial layer comprises a first semiconductor layer, an active layer and a second semiconductor layer which are stacked in sequence, and the passivation layer covers the side surface of the epitaxial layer; the insulating reflecting layer covers one side, far away from the epitaxial layer, of the passivation layer, and a groove is formed between every two adjacent pixel units; the electrode layer is located in the groove. According to the invention, the problem of low occupation ratio of small-angle light extraction efficiency of a single pixel unit can be effectively solved.

The utility model relates to the technical field of harvesters, and discloses a heat insulation device for a harvester ceiling, which comprises a machine room, the upper surface of the machine room is fixedly connected with a grid plate, the four corners of the upper surface of the grid plate are fixedly connected with supporting columns, the top ends of the four supporting columns are fixedly connected with heat insulation cotton, and the heat insulation cotton is fixedly connected with the machine room. The upper surface of the heat insulation cotton is fixedly connected with a ceiling, the upper surface of the ceiling is fixedly connected with a reflecting layer, through grooves are formed in the upper surface of the grid plate and the lower surface of the heat insulation cotton, and a plurality of micropores are formed in the grid plate. According to the ceiling, indoor and outdoor temperature can be effectively isolated through the heat insulation cotton, heat directly irradiated by sunlight can be effectively reflected through the reflecting layer, the heat insulation effect is further improved, the heat conduction effect of solar radiation is effectively reduced through the arrangement of the through grooves, heat preservation is conducted on the interior of the machine room, and the heat insulation effect of the ceiling is effectively improved; the health of the driver and the improvement of the working efficiency are facilitated.

The invention relates to a resistance network establishment method and device, computer equipment and a medium. The resistance network establishment method comprises the following steps: determining a first equivalent matrix of internal nodes of a first resistance network in an initial circuit, wherein the internal nodes are nodes for electrically connecting resistors; performing reduction processing on the first equivalent matrix to obtain feature information for reflecting a second equivalent matrix, the second equivalent matrix being the reduced first equivalent matrix; constructing a second resistance network comprising a plurality of internal nodes according to the feature information; wherein the first number of the internal nodes in the first resistance network is greater than the second number of the internal nodes in the second resistance network. The second resistance network is constructed through the feature information in the reduced second equivalent matrix, the number of internal nodes is reduced, and a plurality of internal nodes are reserved to effectively reflect the first resistance network, so that the precision of the resistance network is improved.

The utility model relates to the technical field of USB connectors, and discloses an anti-loosening USB connector, which comprises a main body mechanism, and a protection mechanism is arranged on the outer side of the main body mechanism. The main body mechanism comprises a connector, a connecting wire is fixedly connected to the left side of the connector, a connecting plug is fixedly connected to the left side of the connecting wire, springs are fixedly connected to the inner walls of the upper end and the lower end of the connecting plug, a locking block is fixedly connected to one end of each spring, and a receiver is movably connected to the interior of the connecting plug. According to the anti-loosening USB connector, the locking blocks are clamped into the grooves formed in the surfaces of the upper and lower sides of the receiver through stretching and retracting of the springs, the receiver is fixed by attaching the outer side surfaces of the locking blocks to the inner walls of the grooves formed in the surfaces of the upper and lower sides of the receiver, the anti-loosening effect is achieved, and shaking generated when the receiver is connected with the connecting plug is avoided; and the effects of being simple in structure, low in manufacturing cost and high in universality are achieved.

The present invention discloses a respiratory rate detection method, device, mobile terminal and storage medium provided by an embodiment of the present invention, the method comprising: obtaining first multi-axis acceleration data and first angular velocity data of an object to be detected; inputting the first multi-axis acceleration data and the first angular velocity data into a first model, so that the first model generates a one-dimensional respiratory decision signal after multi-axis fusion processing according to the first multi-axis acceleration data and the first angular velocity data; inputting the one-dimensional respiratory decision signal into the first model, so that the first model calculates the respiratory rate of the object to be detected according to the one-dimensional respiratory decision signal. The accuracy of respiratory rate detection can be improved by using the embodiment of the present invention.

A light guide member of a waveguide structure of an image display device for guiding image light incident from a display and emitting the image light toward an eye of a user, characterized by being formed of a single crystal composed of lithium niobate. According to the present invention, a light guide member having a high refractive index and a high internal transmittance can be provided.

The invention belongs to the technical field of building temperature control, and discloses a light reflection control device and method for a building, the light reflection control device comprises a base, the top of the base is rotationally sleeved with a rotary assembly component, and reflection components are distributed at the top of the rotary assembly component in an array mode. The transverse movement control mechanism and the direction control mechanism are used for controlling self-overturning of the reflection assembly and rotation in the horizontal plane, when the reflection assembly is assembled on the top of a building, the overturning angle and direction of the reflection assembly are regularly adjusted according to the all-day illumination route and angle measured in advance, and the reflection assembly adapts to light irradiated to the top of the building; effective reflection under the vertical effect is achieved, the situation that sunlight irradiates a building surface is reduced, the internal temperature of a building is reduced, the cooling and heat dissipation effects are improved, meanwhile, power consumption of refrigeration equipment in the building is reduced, damage of illumination to the top of the building is reduced, energy is saved, meanwhile, the service life of the building is prolonged, and the use effect is good.

The utility model discloses a damp proof effect is good and high use comfort degree's resident container, including the box, the inner wall fixedly connected with the baffle of box, one side of box inner chamber top is fixedly connected with fan through the mount, one side fixedly connected with the air inlet shell of box top, the right side of air inlet shell is provided with the dust screen, the top and bottom of air inlet shell inner chamber all are fixedly connected with the fixed frame, the inner chamber swing joint of fixed frame has the dehumidification filter layer. The utility model discloses a fan, air inlet shell, dust screen, fixed frame and dehumidification filter layer, and the inner chamber of air inlet shell produces negative pressure for fan operation, and the mesh of dust screen surface is entered the inner chamber of air inlet shell for the outside air, and dust screen and dehumidification filter layer carry out filtration and remove to dust particle and moisture in the air, and the air after purification is discharged into the box, and opens the sealed sliding window and makes the inner chamber of box produce air circulation, to reach the purpose of ventilation and drying.

The invention belongs to the technical field of active substance screening, and particularly relates to a method for high-throughput screening of a monoamine oxidase B inhibitor. The method comprises the following steps: incubating monoamine oxidase B and a drug-containing brain homogenate extracting solution, removing components which are not specifically bound by using an affinity ultrafiltration technology, eluting by using methanol to obtain a potential ligand, and identifying by using UPLC-Q-Exactive-MS (Ultra Performance Liquid Chromatography-Quantitative Exactive-Mass Spectrometry). Meanwhile, inactivated monoamine oxidase B is used as a control, interference of the control, false positive and non-specific binding is eliminated, the in-vitro monoamine oxidase B inhibition effect of the identification ligand is measured, and the result proves that the compound screened by using the affinity ultrafiltration-liquid chromatography-mass spectrometry technology has the monoamine oxidase B inhibition activity. The method disclosed by the invention is rapid, simple, convenient, stable, high in precision and good in reproducibility, and has a wide application prospect in the aspect of rapidly screening target compounds in natural medicines.

This invention discloses a UV-resistant touchscreen and touch display module, relating to the field of [technology / industry]. It comprises a touchscreen body and a UV-resistant coating applied to the surface of the touchscreen body. The UV-resistant coating is composed of the following components in the indicated mass ratios: a high-refractive-index material H layer made of tantalum oxide, 25-35 parts; a low-refractive-index material L layer made of magnesium fluoride, 20-30 parts; UV-resistant additives, 5-15 parts; a film-forming resin, 25-35 parts; and functional additives, 5-10 parts. The UV-resistant additives include ultraviolet absorbers and ultraviolet shielding agents. This invention exhibits excellent UV resistance: by incorporating titanium dioxide nanoparticles and ultraviolet absorbers, it effectively absorbs and reflects ultraviolet rays, protecting the substrate from UV damage, while also preventing the effects of ultraviolet penetration on the human body.

The utility model provides a reflective film capable of being embossed to form an edge. The reflective film comprises a film body, the film body is provided with a reflective surface layer, a waterproof layer, a polystyrene foam layer and a bottom glue layer which are laminated from top to bottom; the thickness of the polystyrene foam layer is greater than that of the waterproof layer, and the thickness of the polystyrene foam layer is greater than that of the bottom glue layer; the polystyrene foam layer is configured to be capable of correspondingly forming a whole circle of edge finding structure on the peripheral side of the film body in an overflow form after the reflective film is embossed and formed; the polystyrene foam layer is arranged in the film body, the thickness of the polystyrene foam layer is larger than the thickness of the waterproof layer and the thickness of the bottom glue layer, a continuous and uniform edge finding structure can be formed on the periphery of the reflective film at a time according to the principle that polystyrene foam overflows during imprinting forming, and continuous annular protrusions are formed on the periphery of the edge finding structure, so that the reflective area is enlarged, and the reflective effect is improved. Light rays can be reflected more effectively from the side direction and different angles, and the warning effect is remarkably improved.

The invention provides a wave-absorbing honeycomb material and a preparation method thereof. The wave-absorbing honeycomb material comprises an aramid paper honeycomb substrate, and a foam absorbing layer, an optional foam transition layer and a foam matching layer which are sequentially arranged in honeycomb holes of the aramid paper honeycomb substrate from outside to inside, wherein the dielectric constant of the foam matching layer is gt; the dielectric constant gt of the foam transition layer; the foam absorbs the dielectric constant of the layer. According to the wave-absorbing honeycomb material, the technical effects of improving the broadband absorbing effect and reducing the thickness are achieved.

The utility model discloses a drum-type shot blasting machine, relates to the technical field of shot blasting machines, and aims to solve the problems that noise is generated in the running process of the conventional shot blasting machine, and the physical health of operators and the working environment are influenced to a certain extent. The drum-type shot blasting machine device comprises a drum-type shot blasting machine body and a shot blasting lifting treatment device, and the noise reduction and sound insulation cover is fixedly connected to the outer side of the drum-type shot blasting machine body; the roller outer ring rail is fixedly connected to the outer side of a roller of the roller type shot blasting machine body; the guide roller wheel assembly is connected to the roller outer ring rail in a rolling manner; the drum cover is fixedly connected to one end of the drum of the drum-type shot blasting machine body through a connecting hinge; the mounting connecting frame assembly is fixedly connected to the rear end face of the drum-type shot blasting machine body; and the driving transmission structure is fixedly connected with the drum connecting shaft rod of the drum-type shot blasting machine body.

The invention discloses an electromagnetic shielding ventilation device. The electromagnetic shielding ventilation device comprises an upper bottom plate which is used for totally reflecting electromagnetic waves; the lower bottom plate is used for ventilation; the unequal-distance spiral structure is located between the upper bottom plate and the lower bottom plate, and the unequal-distance spiral structure is used for reflecting and consuming electromagnetic waves of different frequencies. Through the unique spiral shape design, electromagnetic waves can be effectively reflected and dissipated, high-frequency broadband electromagnetic shielding is achieved, meanwhile, a large ventilation caliber can be achieved through the spiral structure, and the good ventilation effect is achieved.

Provided are a heat reflective member, which is prevented from being broken even in a high-temperature environment at the time of its manufacturing and its use while maintaining a high reflectance, generates no dust at the time of its use, and can be washed with a chemical liquid, and a method of manufacturing a glass member with a heat reflective layer suitable as the heat reflective member. The heat reflective member is a heat reflective member having a laminated structure in which quartz glass layers are formed on an upper surface and a lower surface of a siliceous sintered powder layer, wherein the heat reflective member includes: an impermeable layer which is formed at a portion of the siliceous sintered powder layer at an end portion of the heat reflective member, which has a thickness at least larger than half of a thickness of the siliceous sintered powder layer, and through which a gas or a liquid is prevented from penetrating; and a buffer layer which is formed between the impermeable layer and the siliceous sintered powder layer, and which changes in density from the impermeable layer toward the sintered powder layer.