Abstract: An air cooling-type refrigeration device includes a device body, an air cooling system attached to the device body, and a drawer which may be pulled out relative to the device body, the drawer being capable of receiving cold air provided by the air cooling system, so as to cool an object stored in the drawer. The air cooling-type refrigeration device further comprises a magnetic field generating apparatus and a detection apparatus. When the magnetic field generating apparatus is powered on, a magnetic field acting on the object stored in the drawer is generated. The detection apparatus is used to detect whether the drawer is pulled out. The magnetic field generating apparatus and the detection apparatus are configured such that the magnetic field generating apparatus is powered off when the detection apparatus detects that the drawer is pulled out.

Abstract: Provided are a sample pretreatment device and method for nucleic acid sequencing. The sample pretreatment device for nucleic acid sequencing includes a carrier, a first electrode, a second electrode, and a controller. The carrier is provided with a pretreatment chamber. The carrier is provided with a fluid inlet and a fluid outlet that communicate with the pretreatment chamber. The first electrode is disposed on the top wall of the pretreatment chamber. The second electrode is disposed on the bottom wall of the pretreatment chamber. The first electrode and the second electrode are electrically connected to the controller.

Abstract: A magnetic field fresh-keeping apparatus and an air-cooled refrigeration device. The magnetic field fresh-keeping apparatus comprises a drawer container, a drawer, a magnet assembly, and a waterproof structure. The front side of the drawer container has an opening. The drawer is slidably mounted within the drawer container. The magnet assembly comprises a first magnet and a second magnet disposed on opposite sides of the drawer container. The magnet mounting cavity comprises a first mounting cavity for accommodating the first magnet and a second mounting cavity for accommodating the second magnet, and the first mounting cavity and the second mounting cavity are both configured to allow an airflow to pass through so as to cool the first magnet and the second magnet. The waterproof structure is configured to waterproof the magnet assembly.

Abstract: A refrigeration device having a magnetic field freshness-preserving apparatus, includes a cabinet defining a storage chamber, a back part of the storage chamber having a refrigeration air duct; and a magnetic field freshness-preserving apparatus having a magnetic field component used to apply a magnetic field to a freshness-preserving space inside the storage chamber. The magnetic field freshness-preserving apparatus includes a barrel body, an air intake port and an air return port in communication with the refrigeration air duct; and a drawer defining a freshness-preserving space. The magnetic field freshness-preserving unit is configured to form a surrounding air duct that allows airflow to flow from the air inlet port sequentially through a top wall of the barrel body, a front baffle of the drawer, and a space below a bottom plate of the drawer, and back to the air return port, so as to refrigerate the freshness-preserving space.

Abstract: A magnetic field fresh-keeping apparatus comprises a drawer container, a drawer, a magnetic field assembly, an air inlet duct assembly, and an air return opening. The magnetic field assembly is configured to provide a magnetic field to a stored item in the drawer; the air inlet duct assembly is configured to enable cold air to first cool the magnetic field assembly, and then enter the drawer container in a manner of not directly blowing the stored item; the air return opening is formed on the drawer container for discharging the air in the drawer container. The magnetic field assembly comprises a top coil and a bottom coil. The air inlet duct assembly comprises a top deflector plate covering the outside of the top coil, a top air duct formed between the top deflector plate and a top wall of the drawer container.

Abstract: A method for preparing a polarization volume holographic grating capable of achieving different diffraction efficiencies includes: coating a top surface of a substrate medium with a photo-alignment layer; covering a top surface of the photo-alignment layer with a mask, and performing interference exposure using two orthogonal circularly-polarized beams; removing the mask, and then coating the top surface of the photo-alignment layer with a layer of liquid crystal solution of a preset concentration; placing the liquid crystal solution into a nitrogen environment, and curing the liquid crystal solution under UV irradiation to obtain a liquid crystal film; removing a disordered liquid crystal film in a non-grating region on the substrate medium using a laser cleaning device, so as to obtain a PVG; and covering a surface of the PVG with a graded-UV-transmittance filter, and exposing the grating through the filter to UV light to obtain PVG regions.

Abstract: A magnetic field freshness-preserving storage container (200) includes a storage assembly (210), in which a storage space for holding a stored object is defined; and one or more magnetic field assemblies (201) respectively sleeved on the periphery of the storage assembly (210). Each magnetic field assembly (201) comprises: one or more magnetic components (220) arranged on an outer side of the storage assembly (210) and used to form a magnetic field in the storage space; and an annular magnetically conductive component (230), which comprises uniform magnetization plates (231) arranged corresponding to the magnetic components (220), and connecting straps (232) connected to the uniform magnetization plates (231) and arranged around the periphery of the storage assembly (210), the uniform magnetization plates (231) and the connecting straps (232) forming an annular magnetic conduction path outside the storage space.

Abstract: A redirecting rotating mirror arrangement includes a directional antenna subcomponent having a direction of maximum received or transmitted beam intensity. The redirecting rotating mirror arrangement also includes a rotatable mirror that reflects an electromagnetic beam to or from the directional antenna subcomponent. The rotatable mirror is inclined at an inclination angle with respect to a horizontal plane. The arrangement also includes a motor that rotates the rotatable mirror about the direction of maximum received or transmitted beam intensity such that the electromagnetic beam is either received from or transmitted to a range of angles as the rotatable mirror rotates.

Abstract: This application provides a sealing device and a sealing system, which belongs to the field of machinery, the sealing device provided by this application comprises an inner core and at least two elastic components spaced apart on a side wall of the inner core; an end of the inner core is provided with a sealing component. The sealing system provided by this application comprises a sealing device, a sealed piece and a position limiting device that allows the sealing device to be inserted or pulled out. The sealing component provided by this application is easy to install and disassemble, can be employed to block the opening of the component to be sealed, and the arrangement of the elastic components can prevent the sealing device from being detached from the component to be sealed to a certain extent, the sealing performance is good, it is not easy to detach.

Abstract: A magnetic field fresh-keeping apparatus includes a drawer container, a drawer, a magnetic field assembly, an air inlet duct assembly, and an air return opening. An opening is provided at the front side of the drawer container; the drawer is slidably mounted in the drawer container; the magnetic field assembly is configured to provide a magnetic field to a stored item in the drawer; the air inlet duct assembly is configured to enable cold air to first cool the magnetic field assembly, and then enter the drawer container in a manner of not directly blowing the stored item; the air return opening is formed on the drawer container for discharging the air in the drawer container.

Abstract: A card clothing wire is disclosed, especially for a doffer or a worker of a carding machine, which provides a superior retention of fibers during a carding process and which can be universally used to produce nonwoven webs with an increased grammage or to produce nonwoven webs with a low grammage and an increased quality. In one form, the card clothing wire includes a tooth depth of less than 1.7 mm and an overhanging tip with an undercut.

Abstract: A display panel and a display device are disclosed. The display panel includes a plurality of scan lines, a plurality of data lines, and a plurality of sub-pixels. Each of the scan lines is electrically connected to a row of the sub-pixels. The plurality of sub-pixels include a first pixel column and a second pixel column. The first pixel column and the second pixel column are arranged adjacent to each other. The first pixel column includes a plurality of first pixel units. The second pixel column includes a plurality of second pixel units. Each of the first pixel unit and the second pixel unit includes three sub-pixels, and colors of the three sub-pixels are different. At least two adjacent first pixel units and at least two adjacent second pixel units are electrically connected to a same data line.

Abstract: A gas-liquid separator includes a housing having a first housing portion defining a first housing volume and a second housing portion defining a second housing volume. The gas-liquid separator includes a plate positioned at least partially within the first housing volume. The gas-liquid separator includes a first impaction media positioned against the plate. The first impaction media extends in a first direction. The gas-liquid separator includes a second impaction media positioned against the plate. The second impaction media extends in a second direction, different than the first direction.

Abstract: A card clothing wire is disclosed, especially for a doffer or a worker of a carding machine, which provides a superior retention of fibers during a carding process and which can be universally used to produce nonwoven webs with an increased grammage or to produce nonwoven webs with a low grammage and an increased quality. In one form, the card clothing wire includes a tooth depth of less than 1.7 mm and an overhanging tip with an undercut.

Abstract: A display panel driving method and a display device are provided. The display panel driving method includes: receiving a refresh rate switching instruction, where the refresh rate switching instruction is configured to control a display panel to switch from a first refresh rate to a second refresh rate; causing an input first video signal with a first image resolution and a first frame rate to be generated into a second video signal with a second image resolution and a second frame rate according to the refresh rate switching instruction; and outputting a scan driving signal corresponding to the second refresh rate and the second video signal to a plurality of pixels of the display panel.

Abstract: A driving method of a display panel includes: obtaining first initial voltage values respectively corresponding to N sub-pixels on a first data line and second initial voltage values respectively corresponding to the N sub-pixels on a second data line in a first initial picture, and third initial voltage values respectively corresponding to 1st to Mth sub-pixels of the N sub-pixels on the first data line and fourth initial voltage values respectively corresponding to the 1st to Mth sub-pixels on the second data line in a second initial picture following the first initial picture; calculating a voltage compensation value for the Mth sub-pixel based on the corresponding first, second, third, and fourth initial voltage value; calculating a target voltage value for the Mth sub-pixel based on the voltage compensation value; and displaying the second initial picture based on the target voltage value.

Abstract: A display panel driving method and a display device are provided. The display panel driving method includes: receiving a refresh rate switching instruction, where the refresh rate switching instruction is configured to control a display panel to switch from a first refresh rate to a second refresh rate; causing an input first video signal with a first image resolution and a first frame rate to be generated into a second video signal with a second image resolution and a second frame rate according to the refresh rate switching instruction; and outputting a scan driving signal corresponding to the second refresh rate and the second video signal to a plurality of pixels of the display panel.

Abstract: A driving method of a display panel includes: obtaining first initial voltage values respectively corresponding to N sub-pixels on a first data line and second initial voltage values respectively corresponding to the N sub-pixels on a second data line in a first initial picture, and third initial voltage values respectively corresponding to 1st to Mth sub-pixels of the N sub-pixels on the first data line and fourth initial voltage values respectively corresponding to the 1st to Mth sub-pixels on the second data line in a second initial picture following the first initial picture; calculating a voltage compensation value for the Mth sub-pixel based on the corresponding first, second, third, and fourth initial voltage value; calculating a target voltage value for the Mth sub-pixel based on the voltage compensation value; and displaying the second initial picture based on the target voltage value.