Abstract: A high-speed nut rotation feed ball screw device includes a ball screw, a ball screw nut, a bearing unit, and a driving unit. The ball screw is fixed on a machine tool via a ball screw seat. The bearing unit includes an inner bearing fixing sleeve, an outer bearing fixing sleeve, and a bearing assembly. One end of the inner bearing fixing sleeve is fixedly connected to one end of the ball screw nut, and another end is fixedly connected to the driving unit. The ball screw nut is arranged on the ball screw. The driving unit includes a first pulley, a second pulley, a synchronous belt, and a driving motor. The first pulley is connected to the driving motor. The second pulley is sleeved on the ball screw and is connected to the inner bearing fixing sleeve. The first and second pulleys are connected via the synchronous belt.

Abstract: A method and apparatus for renaming a file system object and a storage medium are provided. The method includes: determining a renaming type for a file system object according to a received renaming request; determining, according to the renaming type, data processing operations respectively corresponding to multiple servers, wherein the multiple servers include a first server storing structure information of a directory, a second server storing attribute information and structure information of a file and attribute information of the directory, and a third server storing content data of the file; and executing, through the multiple servers, the data processing operations respectively corresponding to the multiple servers to rename the file system object.

Abstract: Disclosed are a liquid supramolecular self-recognition system of low-pH azelaic acid, and a preparation method therefor and application thereof. The preparation method for the ternary liquid supramolecular self-recognition system of low-pH azelaic acid/succinic acid/panthenol includes the following steps: mixing and heating azelaic acid, succinic acid, and panthenol in a molar ratio of 1:0.5:1-1:10:10 in a sealed container to obtain a mixture and heated at 60-120° C. for more than 1-24 hours, and cooling down the mixture to room temperature after the heating is completed to obtain the liquid supramolecular self-recognition system of low-pH azelaic acid. The preparation method is green and simple, and the resulting supramolecular self-recognition system can effectively improve the solubility of azelaic acid, and have excellent stability without precipitation.

Abstract: Disclosed are a visualization grouting device for coal and rock fissures and a test method, a test device including a visualization fissure grouting box body, a box body bracket, a grouting device and a monitoring device. A bottom plate is divided into four identical areas, rubber cushion blocks with different specifications are arranged to simulate different fissure widths and tortuosity, artificial protolith thin film is pasted inside, and a grouting hole and a plurality of pressure measuring holes are arranged in the center of the upper top plate. In the present disclosure, the grouting process of fissures under different grouting conditions, such as different fissure widths, roughness, grouting resistance and tortuosity of pore channels can be simulated, the grouting under different fissure conditions can be simultaneously simulated, and the differences of different grouting diffusion forms can be clearly and intuitively analyzed and compared through the visualization box body.

Abstract: Embodiments of this application relate to the field of power source control technologies, and disclose a control system and a charging and discharging control system. The control system includes a control circuit and an intermediate computer, where the control circuit includes a pressure sensor, a piezoelectric valve, and a controller; the pressure sensor is configured to collect pressure information; the controller is configured to receive the pressure information collected by the pressure sensor and transmit the pressure information to an intermediate computer; the intermediate computer is configured to transmit the pressure information to an upper computer, receive a preset pressure value generated by the upper computer based on the pressure information, and transmit the preset pressure value to the controller; and the controller is further configured to control the piezoelectric valve based on the preset pressure value.

Abstract: An electrode plate molding device is disclosed, including a conveying mechanism, a cutting mechanism, a first detection mechanism, and a deviation rectification mechanism. The conveying mechanism is configured to convey an electrode plate strip. The cutting mechanism is arranged downstream of the conveying mechanism along a conveying direction of the electrode plate strip. The cutting mechanism is configured to cut the electrode plate strip to form an electrode plate. The first detection mechanism is located upstream of the cutting mechanism along the conveying direction. The first detection mechanism is configured to detect a location of the electrode plate strip along a width direction of the electrode plate strip. The deviation rectification mechanism adjusts relative locations of the electrode plate strip and the cutting mechanism along the width direction in response to a detection result of the first detection mechanism.

Abstract: A sprayer for squaring crystal rod includes a first sprayer for wire guide wheel cleaning and a second sprayer for cutting, the first sprayer for wire guide wheel cleaning is disposed at a side of the wire guide wheel, and a liquid spray direction of the first sprayer for wire guide wheel cleaning corresponds to a wire guide groove of the wire guide wheel, so as to flush foreign matters in the wire guide groove in a process of squaring crystal rod; the second sprayer for cutting is disposed at a side of the crystal rod, and the second sprayer for cutting corresponds to a slit in the process of squaring crystal rod, and sprays the slit to discharge powder.

Abstract: The present disclosure provides a curvature determination method, a curved display panel, and a display device. The curvature determination method includes: establishing a first association relationship between deflection and a shear stress of the curved display panel in a first direction, the first direction being a bending direction of the curved display panel; determining a constraint condition for the shear stress in accordance with an influence of the shear stress on a light leakage of the curved display panel; and generating a curvature change relationship of the curved display panel in the first direction in accordance with the first association relationship when the constraint condition has been satisfied.

Abstract: A compound represented by a formula (A), W is and T is H, and R1-R8 are defined as defined above.

Abstract: A brivaracetam tablet and a preparation method therefor, relating to the field of pharmacy. The tablet includes a sustained-release layer and an immediate-release layer; the sustained-release layer includes an active ingredient, a sustained-release framework material, and optional other pharmaceutically acceptable excipients or carriers; the immediate-release layer includes an active ingredient and other excipients or carriers; and the active ingredient is brivaracetam or a pharmaceutically acceptable salt thereof. The tablet has the advantages of fast onset time, long sustained release time, low frequency of taking, and equivalent in-vivo pharmacokinetics to a brivaracetam immediate-release tablet (reference product), and the like. The preparation method is simple to operate and stable in process.

Abstract: Provided is a flexible display structure, including a reinforcing strip, and a flexible display panel and a supporting layer that are laminated. The flexible display panel is provided with a first surface and a second surface opposite to each other, and a first side surface connecting the first surface and the second surface, and the reinforcing strip is disposed on the first side surface and configured to adhere the flexible display panel to the supporting layer.

Abstract: An evacuation bridge for bridging a horizontal gap between two elevator cars of an elevator system in an emergency situation includes: a support structure having a base plate and at least one side part, wherein the base plate is attachable at its ends to evacuation openings of the elevator cars to form a walkway between the evacuation openings; wherein the side part is mounted movably between a first position and a second position to the base plate so that an overall width of the support structure is adjustable to a first overall width by moving the side part in the first position and to a second overall width by moving the side part in the second position; and wherein the first overall width is smaller than an individual width of each evacuation opening and the second overall width is larger than the individual width of each evacuation opening.

Abstract: The present disclosure relates to the technical field of antennas, and discloses a control method, a control component and a control device.

Abstract: A seawater corrosion-resistant marine engineering steel and a preparation method thereof are provided. The seawater corrosion-resistant marine engineering steel consists of the following chemical compositions in percentage by mass: C: 0.011-0.069%, Si: 0.11-0.29%, Cr: 1.51-1.99%, Nb: 0.02-0.05%, Zr: 0.01-0.02%, RE: 0.0034-0.02%, and the balance of Fe and inevitable impurities. The mass percentages of Zr element and RE element also satisfy the following formulas: 0.01%<Zr+RE<0.02%, and Zr/RE=1-3. The marine engineering steel is designed with cheap chemical compositions of low carbon, low silicon and medium chromium, and is completely free of valuable corrosion-resistant metal elements such as Ni and Cu. Instead of the traditional Al deoxidization technology, Si deoxidization assisted by Zr?RE composite deoxidization is used to form a fine, dispersed and uniform composite oxysulfide.

Abstract: A device for cleaning a finished monocrystalline square rod may include a washer arranged on a side of the square rod for washing the square rod and a dryer arranged around the square rod for blow-drying the washed square rod.

Abstract: The present disclosure provides a silicon bar rinsing device comprising: a rinsing portion, wherein the rinsing portion is a cavity having a upper opening and is configured to rinse the silicon bar; an adjusting portion disposed in the rinsing portion; a compressed air pipeline disposed on a side of the rinsing portion and communicated with the rinsing portion; a reuse water pipeline disposed on an other side of the rinsing portion opposite to the compressed air pipeline and communicated with the rinsing portion; and a control unit disposed on a upper end of the rinsing portion and configured to control turning on or off of the silicon bar rinsing device.

Abstract: A method and device for separating and recovering heavy metal ions through membrane-forming mineralization fixation, applicable in the domain of acid wastewater treatment containing heavy metal ions. The process involves mixing composite mineral particles with heavy metal acidic wastewater, then conducting a first hydration reaction under static conditions. This leads to adsorption, precipitation, and crystallization of heavy metal ions in the wastewater via a colloidal liquid membrane, resulting in particles coated with a mineralized membrane. These particles exhibit a gap between the mineralized membrane and their core. The next step is to separate these coated particles and recover them. The preparation of composite mineral particles involves mixing sodium carbonate/sodium silicate, bentonite, carbide slag, and water, followed by a second hydration reaction and subsequent granulation, aging, and dehydration condensation. The particle sizes of both bentonite and carbide slag are maintained at ?74 m.

Abstract: A refrigeration appliance has a box body and a door arranged in the front of the box body, an accommodating cavity arranged at the top of the box body with a first inlet open upward to allow a control and/or power supply module to enter the accommodating cavity, and a top cap for closing the first inlet. The control and/or power supply module includes a first connector, and the accommodating cavity is arranged to open toward a rear side of the box body to allow a second connector to be engaged with the first connector from the rear side of the box body. This allows to increase a volume of the refrigeration appliance, and the control and/or power supply module is connected conveniently.

Abstract: Provided in the present invention is a high-throughput material simulation calculation optimization method based on time prediction, relating to the field of materials science. The method comprises: first constructing a prediction model of task configurations and corresponding time predictions, and using the prediction model to generate the execution time of all of the tasks in a high-throughput material simulation calculation under different conditions; then generating an optimal scheduling plan for each model in the high-throughput material simulation calculation by means of directed graphs; and, according to the optimal scheduling plan for each model, sequentially executing all of the tasks until all of the tasks are completed. Further, a high-throughput computing simulation optimization apparatus based on a time prediction and a storage medium are provided.

Abstract: Embodiments of this application relate to the field of power source control technologies, and disclose a control system and a charging and discharging control system. The control system includes a control circuit and an intermediate computer, where the control circuit includes a pressure sensor, a piezoelectric valve, and a controller; the pressure sensor is configured to collect pressure information; the controller is configured to receive the pressure information collected by the pressure sensor and transmit the pressure information to an intermediate computer; the intermediate computer is configured to transmit the pressure information to an upper computer, receive a preset pressure value generated by the upper computer based on the pressure information, and transmit the preset pressure value to the controller; and the controller is further configured to control the piezoelectric valve based on the preset pressure value.