Abstract: The disclosure relates to a process for continuously producing polyoxymethylene dimethyl ethers at low temperature, pertains to the technical field of polyoxymethylene dimethyl ether preparation processes, and solves the technical problem of continuous production of polyoxymethylene dimethyl ether. A membrane separation element with precisely controlled pores in membrane is used to realize a direct separation of the feedstocks from the catalyst within the reactor, and effectively reduce the permeation resistance of the separation membrane tube. By oppositely switching the flowing direction of liquid reaction materials, the adhesion of the catalyst to the separation membrane tube is inhibited, and some particles stuck in separation membrane tube are removed, which ensures the continuous operation of the reaction process and allows a molecular sieve catalyst to exhibit its advantage of long catalytic life.

Abstract: The present disclosure relates to a field-effect transistor and a method of fabricating the same. A field-effect transistor includes a semiconductor substrate including a first semiconductor material having a first lattice constant, and a fin structure on the semiconductor substrate. The fin structure includes a second semiconductor material having a second lattice constant that is different from the first lattice constant. The fin structure further includes a lower portion that is elongated in a first direction, a plurality of upper portions protruding from the lower portion and elongated in a second direction that is different from the first direction, and a gate structure crossing the plurality of upper portions.

Abstract: The present disclosure provides a display panel and device, an image processing method and device, and a virtual reality system. The display panel includes: a first display area; and at least one second display area surrounding the first display area, a number of sub-pixels per unit area in the first display area being greater than a number of sub-pixels per unit area in the at least one second display area.

Abstract: A shower head structure comprises a handle with a channel passage. A head portion is arranged at one end of the handle, and the head portion is internally provided with an accommodating cavity. The accommodating cavity is in communication with the passage. First water through holes and bumps made of elastic materials are arranged on one face of the head portion. The first water through holes are in communication with the accommodating cavity. A reinforcing plate is arranged on the face where the bumps are arranged of the head portion. The reinforcing plate is provided with spray holes and reinforcing holes for the bumps to pass through. Side walls of the reinforcing holes are closely attached to roots of the bumps. The spray holes are in communication with the first water through holes.

Abstract: The present disclosure discloses a safe smart toilet, which includes a toilet seat, a rear seat, a seat ring, a toilet cover, a steam generating mechanism with a fumigating and sterilizing function, an automatic opening and closing mechanism and a main control circuit board. The steam generating mechanism includes a steam generator and a radar sensor. The steam generator is arranged in the toilet seat through a slide rail mechanism, and the steam generator is provided with a water inlet and a sewage outlet for cleaning a heater. The automatic opening and closing mechanism includes a turning motor, a flip motor, a turning sensor, and a flip sensor. The smart toilet of the present disclosure uses steam to perform high-temperature sterilization on the toilet seat and the seat ring to improve the cleanliness thereof.

Abstract: The present disclosure discloses a pixel driving circuit, a pixel circuit, a display panel and a display apparatus, wherein the pixel driving circuit is used for driving a light-emitting element to emit light, and includes: a plurality of switching transistors, wherein each of the switching transistors is an oxide thin film transistor.

Abstract: An energy storage power supply is provided and includes a shell and a plurality of compartments, including a mainboard compartment for installing a circuit mainboard of the power supply, a battery compartment for installing a battery, a lighting compartment for installing a lamp panel, and a pair of heat dissipation air ducts. The lighting compartment, battery compartment and mainboard compartment are arranged from one end of the shell to the shell's other end sequentially. The pair of heat dissipation air ducts are arranged on two sides of one or more of the mainboard compartment and/or lighting compartment to prevent heat generated in the mainboard compartment and/or the lighting compartment from being dissipated into the battery compartment.

Abstract: Disclosed are threading device and threading method, including a turning step for threading a rotating workpiece with a predetermined cutting depth, by relatively moving a tool in the axial direction of the workpiece and then rounding-up the workpiece obliquely by relatively moving the tool in the axial direction and radially outward. The workpiece is subjected to the threading process by repeatedly carrying out the turning step while sequentially shifting the axial position for starting the rounding-up of the workpiece relative to an axial position where the rounding-up of the workpiece has been started in a previous turning step.

Abstract: A large-tonnage coal dropping buffer skip for a mine is disclosed. A loading skip box (14) is installed at the top of a large-tonnage skip (12), a coal dropping buffer device (13) is arranged on the inner sidewall of the large-tonnage skip (12), and the coal dropping buffer device (13) includes: a frame (1) fixedly connected with the inner sidewall of the large-tonnage skip (12); a lining plate guide frame (6) connected with the frame (1) through shock absorbers (2), guide sliding grooves being formed in the lining plate guide frame (6); a lining plate support (4) slidably nested in the guide sliding grooves in the lining plate guide frame (6), hoisting lugs (9) for hoisting being arranged at the top end of the lining plate support (4); and a lining plate (5) detachably connected with the lining plate support (4) through fasteners (7).

Abstract: This invention relates to the field of lithography and particularly to a lithographic method, a lithographic product and a lithographic material. The invention provides a lithographic method including the steps of: 1) providing first light and second light to the lithographic material, wherein at least part of molecules for generating effector molecules controllable by a molecular switch in a turned-on state generate effector molecules, thereby changing physical and/or chemical properties of the lithographic material in an area where the molecular switch is turned on; and 2) removing either the lithographic material that has changed in physical or chemical properties or the lithographic material that has not changed. The novel lithographic method provided by the invention can effectively break through the diffraction limit of light, thereby further improving lithography precision.

Abstract: A novel memory device is provided. A first cell array including a plurality of memory cells and a second cell array including a plurality of memory cells are stacked. One of two bit lines of a first bit line pair is electrically connected to A memory cells of the first cell array, and the other of the two bit lines of the first bit line pair is electrically connected to D memory cells of the second cell array. One of two bit lines of a second bit line pair is electrically connected to B memory cells of the first cell array and F memory cells of the second cell array, and the other of the two bit lines of the second bit line pair is electrically connected to C memory cells of the first cell array and E memory cells of the second cell array. The first bit line pairs and the second bit line pairs are alternately provided.

Abstract: A static random access memory (SRAM) cell includes a semiconductor fin, a first gate structure, a second gate structure, an epitaxy structure, and a first fin sidewall structure. The first gate structure crosses the semiconductor fin to form a pull-down (PD) transistor. The second gate structure crosses the semiconductor fin to form a pull-gate (PG) transistor. The epitaxy structure is on the semiconductor fin and between the first and second gate structures. The first fin sidewall structure is on a first side of the epitaxy structure and between the first and second gate structures. A method for manufacturing the semiconductor device is also disclosed.

Abstract: The present invention provides compounds of formulae (1) (2) wherein R1 and R2 are C1-30alkyl, C2-3O-alkenyl, C2-30-alkynyl, C5-7-cycloalkyl, C6-14-aryl or 5 to 14 membered heteroaryl, wherein C1-30-alkyl, C2-3O-alkenyl and C2-3O-alkynyl can be substituted with one or more substituents selected from the group consisting of halogen, phenyl, O—C1-20-alkyl, O—C2-20-alkenyl and O—C2-2O-alkynyl, and wherein C5-7-cycloalkyl, C6-14-aryl and 5 to 14 membered heteroaryl can be substituted with one or more substituents selected from the group consisting of halogen, C1-20alkyl, C2-2O-alkenyl, C2-2O-alkynyl, O—C1-20-alkyl, O—C2-2o-alkenyl and O—C2-2o-alkynyl, Ra, Rb, Rc and Rd are independently and at each occurrence selected from the group consisting of C1-30alkyl, C2-30-alkenyl, C2-30-alkynyl, C6-14-aryl and 5 to 14 membered heteroaryl, wherein C1-30-alkyl, C2-3o-alkenyl and C2-3o-alkynyl can be substituted with one or more substituents selected from the group consisting of halogen, phenyl, O—C1-20-alkyl, O—C2-20-alken

Abstract: [Problem] To provide a moving body for which it is possible to change the movement direction without changing the orientation during travel. [Solution] With a moving body 1, an exterior case 2 and a drive part 3 are supported by a rotating shaft 4 so as to be able to rotate relative to each other. An upper support shaft 8 of the rotating shaft 4 and the exterior case 2 are connected at a position for which the center of gravity of the exterior case 2 is on the axis of a lower support shaft 10 of the rotating shaft 4. The weight of the exterior case 2 is such that a sufficiently high moment of inertia is provided so that no rotation occurs even when the drive part 3 rotates against the rotational resistance of a bearing 9.

Abstract: An air duct machine including a cabinet, an electric control box, a heat exchanger and a centrifugal fan; the electric control box, the heat exchanger and the centrifugal fan are all disposed inside the cabinet, one of side panels of the cabinet is provided with a return air vent and an air outlet, the electric control box is disposed close to the return air vent, the centrifugal fan is disposed close to the air outlet, and the heat exchanger is disposed between the electric control box and the centrifugal fan. This improves the selectivity and flexibility of installation of the air duct machine, and facilitates maintenance. The air duct machine can have an ultra-thin design when installed in the ceiling or wall, so that the installation space is reduced. Moreover, the airflow direction will not change due to the change of the installation method.

Abstract: A display device includes a display panel, a back plate disposed below the display panel, and a deformation prevention structure disposed below the back plate. The display panel, the back plate, and the deformation prevention structure ar bendable in at least one bendable area. The deformation prevention structure has higher modulus than either the display panel or the back plate in the at least one bendable area. The display device is not deformed even after being repeatedly bent.

Abstract: Embodiments of the disclosure provide systems and methods for enhancing audio signals. The system may include a communication interface configured to receive multi-channel audio signals acquired from a common signal source. The system may further include at least one processor. The at least one processor may be configured to separate the multi-channel audio signals into a first audio signal and a second audio signal in a time domain. The at least one processor may be further configured to decompose the first audio signal and the second audio signal in a frequency domain to obtain a first decomposition data and a second decomposition data, respectively. The at least one processor may be also configured to estimate a noise component in the frequency domain based on the first decomposition data and the second decomposition data. The at least one processor may be additionally configured to enhance the first audio signal based on the estimated noise component.

Abstract: A display device includes a display panel including a display surface on which an image is displayed, a film disposed above the display panel, a bottom chassis disposed under the display panel, a pole frame disposed under the bottom chassis, and a pole chassis. The pole frame includes a fixing portion and an elastic portion. The pole chassis is coupled with the elastic portion. The film includes a first portion disposed on the display panel and a second portion extending from the first portion and coupled to the pole chassis. The pole frame and the pole chassis cooperate to exert a force on the film, and thus the film may be extended to the bottom chassis from the display panel without being deformed.

Abstract: A cosmetic container that is suitable for being made compact and that does not leak when inverted, even when low-viscosity cosmetics are contained therein, and which allows the cosmetics to be reliably oozed when used. The cosmetic container includes a container body for containing a liquid cosmetic, the container body having an upwardly open opening therein, an outer lid for sealing the opening in the container body and a plate-shaped pad that vertically partitions the interior of the container body. The pad is made of felt. The maximum amount of the cosmetic in the container body is such that, when the container body is upright so that the opening in the container body faces vertically upward, the liquid level of the cosmetic is below the bottom surface of the pad.

Abstract: The present disclosure describes a method that includes forming a dielectric layer over a contact region on a substrate; etching the dielectric layer to form a contact opening to expose the contact region; and pre-cleaning the exposed contact region to remove a residual material formed by the etching. During the pre-cleaning, the contact region is exposed to an inductively coupled radio frequency (RF) plasma. Also, during the pre-cleaning, a direct current power supply unit (DC PSU) provides a bias voltage to the substrate and a magnetic field is applied to the inductively coupled RF plasma to collimate ions.