Abstract: The invention discloses a high impermeability and low thermal conductivity inorganic lightweight foam concrete and its preparation method, including the following mass fraction of raw materials: 1260˜1540 parts of ordinary silicate cement, 20˜60 parts of nano-silica, 460˜740 parts of fly ash, 360˜440 parts of aggregate, 9˜11 parts of redispersible latex powder, 7.2˜8.8 parts of polypropylene fiber, 27˜33 parts of quick-setting agent, 500 parts of fluorine-free foam, 900˜1100 parts of water. 33 parts, 500 parts of fluorine-free foam, 900˜1100 parts of water. The high impermeability and low thermal conductivity inorganic lightweight foam concrete prepared by the present invention has a simple formulation, good workability, light weight and low thermal conductivity, and is suitable for the construction of thermal insulation system for building exterior walls.

Abstract: A method for protecting a power system having inverter-interfaced renewable energy sources is provided. The power system includes an inverter and a control system. The control system includes a current controller including a saturation limiter and a proportional and integral (PI) controller, a phase-locked system, and a low-voltage ride-through (LVRT)control unit. The method includes: by using a Park transformation matrix, determining an output voltage of the inverter; determining a modulated voltage of the output voltage; upon detecting a grid fault, obtaining current references by the LVRT control unit; determining a fault current in a first stage of a transient phase of the grid fault; determining a fault current in a second stage of the transient phase; determining a fault current in a third stage of the transient phase; and switching the control system to a fault control mode by tracking the fault currents in the first, second and third stages, to the current references.

Abstract: A light-emitting device, a light-emitting substrate, and a method for manufacturing the light-emitting device. The light-emitting device includes at least one light-emitting structure. The light-emitting structure includes: a first semiconductor layer; a light-emitting layer; a second semiconductor layer, doping ions of the second semiconductor layer and a first semiconductor layer being oppositely charged; a barrier structure provided with an opening for exposing the second semiconductor layer, the orthographic projection of the opening on the base substrate being located in the orthographic projection of the light-emitting layer on the base substrate, and the area of the opening being smaller than that of the light-emitting layer; and a landing electrode located on the side of the barrier structure facing away from the second semiconductor layer, the landing electrode being in contact with the second semiconductor layer by means of the opening.

Abstract: The present disclosure discloses a method for realizing macroscopic super-lubrication by a matching pair of nano metal-coated steel balls and hydrogen-containing carbon films, which is based on the use of nano metal-coated steel balls and diamond-like films with a hydrogen content of 25-30% as the matching pair. Further, a tribochemical reaction occurs through the catalytic action of nano metal during the friction process to form a nano graphene transfer film with incommensurate contact at the contact interface to achieve macroscopic super-lubrication.

Abstract: A method for preparing an ammonium thiomolybdate-porous amorphous carbon composite superlubricity film is disclosed. First, a porous amorphous carbon film is prepared by an anode layer ion source assisted plasma chemical vapor deposition method and a reactive magnetron sputtering method on a substrate. The porous amorphous carbon film is then impregnated in an ammonium thiomolybdate solution, so that the ammonium thiomolybdate is adsorbed on the porous amorphous carbon film, and the impregnated porous amorphous carbon film is air dried.

Abstract: A liquid crystal display panel, including a liquid crystal cell, a liquid crystal, a light-transmitting cover plate and a light-transmitting support structure; where the liquid crystal is located in the liquid crystal cell, the cover plate covers a side where a target surface for emitting light is located of the liquid crystal cell, and the support structure is located between the cover plate and the liquid crystal cell; and an orthogonal projection region of the support structure on the target surface is a partial region of the target surface, and the partial region comprises at least part of an active display region of the target surface.

Abstract: An electromagnetic separation type coating device is provided, and belongs to the technical field of vacuum coating. The device comprises a main vacuum cavity, the front side and the rear side of the main vacuum cavity are each provided with a vacuum cavity door, middle positions of the front vacuum cavity door and the rear vacuum cavity door are each provided with a set of magnetron sputtering targets, and the two sets of magnetron sputtering targets are symmetrically arranged; two sets of ion sources are symmetrically arranged on the outer walls of the left side and the right side of the main vacuum cavity, and two sets of magnetic induction coils are symmetrically arranged at two sides of each set of ion sources, respectively; a vacuum pump set is connected to the top of the main vacuum cavity, a workpiece rest is installed at the bottom in the main vacuum cavity, and is used for installing a to-be-deposited sample piece; and an auxiliary anode is further installed in the main vacuum cavity.

Abstract: The pH-responsive ultrasensitive fluorescent nanoprobe is composed of pH-responsive matrix materials and fluorescent organic small molecule dyes. The pH-responsive matrix materials are calcium phosphate, calcium hydroxyphosphate, fluorapatite, calcium carbonate or ZIF series; the fluorescent organic small molecule dyes are positively charged dyes or negatively charged dyes. The preparation method includes: coating a positively charged dye with a negatively charged matrix material; coating a negatively charged dye with a negatively charged matrix material; and coating a negatively charged dye with a positively charged matrix material.

Abstract: The present disclosure relates to a moire quantitative evaluation method. The method includes obtaining an image of a first pattern layer; obtaining coordinates of each of the first image units; according to the coordinates of each of the first image units and a thickness and a refractive index of a dielectric layer, determining coordinates of projection image units each of which corresponds to a corresponding one of the first image units along an oblique view light path; determining a pixel value of each of the projection image units according to pixel values of second image units in each of the surrounding regions to obtain an oblique view image; superimposing the image of the first pattern layer and the oblique view image to obtain a first superimposed image; converting the first superimposed image into a moire image; and performing a moire quantitative evaluation according to the moire image.

Abstract: A method for preparing an ammonium thiomolybdate-porous amorphous carbon composite superlubricity film is disclosed. First, a porous amorphous carbon film is prepared by an anode layer ion source assisted plasma chemical vapor deposition method and a reactive magnetron sputtering method on a substrate. The porous amorphous carbon film is then impregnated in an ammonium thiomolybdate solution, so that the ammonium thiomolybdate is adsorbed on the porous amorphous carbon film, and the impregnated porous amorphous carbon film is air dried.

Abstract: The present disclosure discloses a method for realizing macroscopic super-lubrication by a matching pair of nano metal-coated steel balls and hydrogen-containing carbon films, which is based on the use of nano metal-coated steel balls and diamond-like films with a hydrogen content of 25-30% as the matching pair. Further, a tribochemical reaction occurs through the catalytic action of nano metal during the friction process to form a nano graphene transfer film with incommensurate contact at the contact interface to achieve macroscopic super-lubrication.

Abstract: The present disclosure provides a total-environment full-scale cyclic accelerated loading experimental system, which pertains to a field of accelerated loading experimental systems. The total-environment full-scale cyclic accelerated loading experimental system includes a rack, and a power mechanism, a chain drive pair, a roller set, a guide rail, etc. installed on the rack. The power mechanism is connected to the roller set through the chain drive pair. The roller set is matched with an annular loading surface of the guide rail. In the present disclosure, in addition to an environmental unit being provided on the rack, modifications are made to structures of the guide rail, the roller set and the chain drive pair as well as connections thereof.

Abstract: Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for generating a pattern program using a genetic algorithm. The genetic algorithm operates on example data strings that represent the data categories to be recognized or extracted through named entity recognition. In the initialization stage, the initial pattern programs are generated based on example data strings that represent the data categories to be recognized or extracted through named entity recognition. Starting from the initial pattern programs, genetic operations are iteratively conducted to generate generations of offspring pattern programs. In each round of the genetic operation, offspring pattern programs are generated through the crossover operation and the mutation operation.

Abstract: A constant temperature circular accelerated loading test system includes: a chassis; a motor reducer and a circular loading wheel group in the middle of the chassis, wherein the motor reducer provides power for the circular loading wheel group, and the circular loading wheel group implements a rolling test on a ground during rotation; a thermally insulated assembly on the chassis, the circular loading wheel group is located in a thermally insulated inner cavity of the thermally insulated assembly; a constant temperature unit on the chassis; a control cabinet on the chassis, wherein the control cabinet is connected to and controls the constant temperature unit and the motor reducer, respectively.

Abstract: Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for generating a pattern program using a genetic algorithm. The genetic algorithm operates on example data strings that represent the data categories to be recognized or extracted through named entity recognition. In the initialization stage, the initial pattern programs are generated based on example data strings that represent the data categories to be recognized or extracted through named entity recognition. Starting from the initial pattern programs, genetic operations are iteratively conducted to generate generations of offspring pattern programs. In each round of the genetic operation, offspring pattern programs are generated through the crossover operation and the mutation operation.

Abstract: A liquid crystal display panel, including a liquid crystal cell, a liquid crystal, a light-transmitting cover plate and a light-transmitting support structure; where the liquid crystal is located in the liquid crystal cell, the cover plate covers a side where a target surface for emitting light is located of the liquid crystal cell, and the support structure is located between the cover plate and the liquid crystal cell; and an orthogonal projection region of the support structure on the target surface is a partial region of the target surface, and the partial region comprises at least part of an active display region of the target surface.

Abstract: A display panel, a display device, and a method for manufacturing a display panel are provided. The display panel includes first and second substrates, first and second alignment films and a liquid crystal layer extending along a first direction and a second direction and sequentially along a third direction perpendicular to the first direction and the second direction. The liquid crystal layer includes a column of liquid crystal molecules along the third direction, and includes a first liquid crystal molecule closest to the first alignment film and a second liquid crystal molecule closest to the second alignment film. The first liquid crystal molecule and the second liquid crystal molecule have different tilting tendencies with respect to the plane defined by the first direction and the second direction, and form a twist angle.

Abstract: The present disclosure relates to a moire quantitative evaluation method. The method includes obtaining an image of a first pattern layer; obtaining coordinates of each of the first image units; according to the coordinates of each of the first image units and a thickness and a refractive index of a dielectric layer, determining coordinates of projection image units each of which corresponds to a corresponding one of the first image units along an oblique view light path; determining a pixel value of each of the projection image units according to pixel values of second image units in each of the surrounding regions to obtain an oblique view image; superimposing the image of the first pattern layer and the oblique view image to obtain a first superimposed image; converting the first superimposed image into a moire image; and performing a moire quantitative evaluation according to the moire image.

Abstract: A display panel, a display device, and a method for manufacturing a display panel are provided. The display panel includes first and second substrates, first and second alignment films and a liquid crystal layer extending along a first direction and a second direction and sequentially along a third direction perpendicular to the first direction and the second direction. The liquid crystal layer includes a column of liquid crystal molecules along the third direction, and includes a first liquid crystal molecule closest to the first alignment film and a second liquid crystal molecule closest to the second alignment film. The first liquid crystal molecule and the second liquid crystal molecule have different tilting tendencies with respect to the plane defined by the first direction and the second direction, and form a twist angle.

Abstract: The pH-responsive ultrasensitive fluorescent nanoprobe is composed of pH-responsive matrix materials and fluorescent organic small molecule dyes. The pH-responsive matrix materials are calcium phosphate, calcium hydroxyphosphate, fluorapatite, calcium carbonate or ZIF series; the fluorescent organic small molecule dyes are positively charged dyes or negatively charged dyes. The preparation method includes: coating a positively charged dye with a negatively charged matrix material; coating a negatively charged dye with a negatively charged matrix material; and coating a negatively charged dye with a positively charged matrix material.