Abstract: The disclosure relates an Al—Mg series aluminum alloy sheet, a preparation method and use thereof. The preparation method includes: step S1, melting and casting the alloy raw materials in sequence to obtain an aluminum alloy ingot; step S2, subjecting the aluminum alloy ingot to a two-stage homogenization treatment so as to obtain a homogenized aluminum alloy ingot; and step S3, subjecting the homogenized aluminum alloy ingot to hot rolling, primary cold rolling, intermediate annealing, final cold rolling, and finished product annealing in sequence to obtain the aluminum alloy sheet.

Abstract: Disclosed are a photovoltaic shutdown circuit and a photovoltaic system. The photovoltaic shutdown circuit comprises a shutdown power line, a signal receiving module, a signal processing module, and a controllable switch module. The signal processing module comprises a signal modulation unit and a threshold comparison unit. A switch end of the controllable switch module is connected in series to the shutdown power line. The signal receiving module is connected to the shutdown power line for receiving a first signal with a controlling signal; the signal modulation unit is for reverting the controlling signal; the threshold comparison unit is connected to the signal modulation unit to receive the reverted controlling signal and compare the reverted controlling signal with a set threshold to output a driving signal. The controllable switch module is connected to the threshold comparison unit to receive the driving signal and control an on/off of the controllable switch module.

Abstract: A semiconductor device is provided. The semiconductor device incudes: a first sub-semiconductor structure including a dielectric layer; and a second sub-semiconductor structure, at least including a carrier substrate, and being bonded to the first sub-semiconductor structure. The first sub-semiconductor structure or the second sub-semiconductor structure includes a charge accumulation preventing layer, and the charge accumulation preventing layer is disposed between the carrier substrate and the dielectric layer, and is configured to avoid an undesired conductive channel from being generated due to charge accumulation on a surface of the carrier substrate.

Abstract: An automatic righting system includes a discrimination calibration module, a righting module, and a controller. The discrimination calibration module includes a distance sensing unit. The distance sensing unit is located at the front end of the glasses and configured to acquire the distance between the distance sensing unit and a first feature position. The righting module includes a push-up air cushion. The push-up air cushion is mounted at the front end of the glasses. The push-up air cushion is configured to be inflated to push the glasses to move upward. The controller is electrically connected to the distance sensing unit and the push-up air cushion. The controller is configured to control the push-up air cushion to start or stop to right the glasses according to a distance signal of the distance sensing unit.

Abstract: The present invention discloses a device and a method for large-scale flow solidification treatment of dredged sediment in a pipeline without a yard. The device includes a dredger, a treatment unit and a use terminal that are communicated in sequence, where the dredger is connected with the treatment unit by adopting transportation units, a mud pump is arranged between the transportation units and the dredger to provide power, a plurality of transportation units are communicated in sequence by adopting relay pumps, the treatment unit includes a mixing system, a monitoring system and a data processing and control system, and the device is also provided with an air pump.

Abstract: An LED human centric lighting device includes a substrate, an LED light emitting chipset and at least two blue light chipsets with different color temperatures arranged on the substrate, a fluorescent colloid and an enclosure. The LED light emitting chipset includes multiple LED light emitting chips, and each of the blue light chipsets includes multiple blue light emitting chips with same color temperature. Each of the blue light chipsets forms a color temperature light emitting area, and the different color temperature light emitting areas are separated by the enclosure. The substrate is provided with a control circuit for controlling light emission of the corresponding color temperature light emitting area, and the fluorescent colloid is arranged in the enclosure. The LED light emitting chip and at least two blue light emitting chips with different color temperatures are assembled in the device, which can reduce a volume of the device.

Abstract: An in-situ tensile device for X-ray tests is provided, including: a frame including a connecting structure, where the connecting structure is configured to fixedly connect to a testing bench of a testing device; a stretching mechanism, disposed on the frame; a clamping mechanism, including two clamping assemblies arranged opposite to each other in a length direction; where the two clamping assemblies are configured to clamp two ends of a testing piece, the testing piece is provided with a testing surface, and the testing surface is disposed on surfaces of the two clamping assemblies; the stretching mechanism is drivingly connected to the two clamping assemblies to enable the two clamping assemblies to move synchronously in one of a direction approaching each other and a direction far away from each other; and the two clamping assemblies are detachably connected to the stretching mechanism. The device can improve the accuracy of test results.

Abstract: An in-situ tensile device for X-ray tests is provided, including: a frame including a connecting structure, where the connecting structure is configured to fixedly connect to a testing bench of a testing device; a stretching mechanism, disposed on the frame; a clamping mechanism, including two clamping assemblies arranged opposite to each other in a length direction; where the two clamping assemblies are configured to clamp two ends of a testing piece, the testing piece is provided with a testing surface, and the testing surface is disposed on surfaces of the two clamping assemblies; the stretching mechanism is drivingly connected to the two clamping assemblies to enable the two clamping assemblies to move synchronously in one of a direction approaching each other and a direction far away from each other; and the two clamping assemblies are detachably connected to the stretching mechanism. The device can improve the accuracy of test results.

Abstract: The present invention discloses a method of producing potassium sorbate particles, comprising the steps of: (1) preparing a potassium sorbate solution; (2) spray drying; (3) spray forming; (4) indirectly drying with steam on a vibration fluidized bed; and (5) swing-type sifting; in step (3), a binder is obtained by spray drying after adding sorbitol to the potassium sorbate solution prepared in step (1), and the binder is mixed with the potassium sorbate powder obtained by spray drying in step (2) to undergo the spray forming process; based on weight ratio, the weight ratio of the sorbitol required to prepare the binder to the potassium sorbate solution required to prepare the binder is 0.05-0.1%:1. The beneficial effects of the present invention are: an appropriate binding effect of the powder particles, a good breaking effect and a good spheronization effect of the powder particles, and uniformity of granulation.

Abstract: The present invention discloses a method of producing potassium sorbate particles, comprising the steps of: (1) preparing a potassium sorbate solution; (2) spray drying; (3) spray forming; (4) indirectly drying with steam on a vibration fluidized bed; and (5) swing-type sifting; in step (3), a binder is obtained by spray drying after adding sorbitol to the potassium sorbate solution prepared in step (1), and the binder is mixed with the potassium sorbate powder obtained by spray drying in step (2) to undergo the spray forming process; based on weight ratio, the weight ratio of the sorbitol required to prepare the binder to the potassium sorbate solution required to prepare the binder is 0.05-0.1%:1. The beneficial effects of the present invention are: an appropriate binding effect of the powder particles, a good breaking effect and a good spheronization effect of the powder particles, and uniformity of granulation.

Abstract: The present invention provided with a power adapter comprises a housing and a power conversion circuit board mounted in the housing. The housing comprises a body, which is a generally cylindrical shell having an accommodating space, an open end and an opposite closed end, wherein the closed end and the cylindrical shell are formed into a one-pieced, integrated structure, The housing also comprises a side dead wall mounted at and adapted to the open end. The power conversion circuit board has a first end connected to the side dead wall and a second end connected to the closed end, wherein the power conversion circuit board is fixedly accommodated within a confined space enclosed by the side dead wall and the body of the housing.

Abstract: The present invention provided with a power adapter comprises a housing and a power conversion circuit board mounted in the housing. The housing comprises a body, which is a generally cylindrical shell having an accommodating space, an open end and an opposite closed end, wherein the closed end and the cylindrical shell are formed into a one-pieced, integrated structure, The housing also comprises a side dead wall mounted at and adapted to the open end. The power conversion circuit board has a first end connected to the side dead wall and a second end connected to the closed end, wherein the power conversion circuit board is fixedly accommodated within a confined space enclosed by the side dead wall and the body of the housing.

Abstract: A method and system for controlling stereoscopic menu display and a mobile communication terminal are provided. Wherein, the method includes: generating and displaying a stereoscopic menu including icons; obtaining a moving track inputted by a user; determining the corresponding rotation tangent planes, rotation directions and rotation speed of the icons in the stereoscopic menu according to coordinates of various points; controlling each icons in the stereoscopic menu to rotate in rotation direction at the rotation speed on the corresponding rotation tangent planes; detecting whether a recovery signal inputted by the user is received, if yes, controlling the stereoscopic menu recovery display according to the icon recovery signal.

Abstract: The present invention relates to a new fluidized-bed catalyst used in a process of propylene ammoxidation to acrylonitrile. The catalyst comprises a silica as carrier and a composition represented by the following general formulas: AaBbCcGedNaeFefBigMohOx Wherein A represents at least one element selected from a group consisting Li,K,Rb,Cs,Sm, In or Tl; B represents at least one element selected from a group consisting of P, Sb, Cr, W. Pr, Ce, As, B, Te, Ga, Al, Nb, Th, La or V; C represents one element selected from a group consisting of Ni, Co, Sr, Mn, Mg, Ca, Zn, Cd or Cu and the mixture thereof; a is a number of from 0.01 to 1.5; b is a number of from 0.01 to 3.0; c is a number of from 0.1 to 12.0; preferably from 2 to 10; d is a number of from 0.01 to 2.0; preferably from 0.01 to 1.0; e is a number of from 0.01 to 0.7; preferably from 0.05 to 0.5; f is a number of from 0.1 to 8; preferably from 1.0 to 3.0; g is a number of from 0.01 to 6; preferably from 0.1 to 2.