Abstract: A method, electronic device, and a computer readable medium for managing backup data that includes determining an expiration time of backup data in a data set to be backed up in a source storage device, and determines a priority of the backup data to be migrated in a migration operation to be performed based on the expiration time. The method may also include migrating backup data with the same priority in the data set to be backed up to a target storage device to reduce a write amplification factor of a storage device, and prolong the service life of the storage device.

Abstract: A production line for producing components to a high standard of cleanliness and sealed and protected in that state includes a loading device, a cleaning device, a detecting device, a pasting device, a heat-sealing device, a packing device, and transfer devices of the production line. The production line automatically processes the components for obtaining components with the high cleanliness. By the processes of protective film pasting, heat-sealing, and packing, the components may be further protected from subsequent pollution. A method for producing components with a high cleanliness applied to the production line is also disclosed.

Abstract: A battery cover plate assembly, a cell, a battery module, a power battery and an electric vehicle are provided. The battery cover plate assembly includes a cover plate, a first pole, a second pole, a flipping member, a scored member, a first conductive member and a telescopic assembly. The second pole includes an upper pole and a lower pole spaced apart from each other. The flipping member is configured to turn over under the action of gas pressure inside the battery and push, by means of the telescopic assembly, the first conductive member to move to break a score, so as to electrically disconnect the upper pole from the lower pole.

Abstract: A securing mechanism for retaining a daughter board upon the primary board includes a base, which is moveably assembled upon the main board, and a latch assembled upon the base and moveable between a locking position and an unlocking position. The base forms a support platform upwardly abutting against the underside of the daughter board and equipped with an arc protrusion for receipt within a notch of the daughter board, and a grounding piece with one end mechanically and electrically connecting a grounding pad of the daughter board and the other end mechanically and electrically connecting a grounding pad on the main board. The base forms a horizontal slot to receive the main body so as to retain the base to the main body in position in the vertical direction. The latch forms a pressing face downwardly pressing an upper side of the daughter board.

Abstract: A grinding device for raised joints of rivets on sheet metal is provided, including a lateral plate, legs, a moving plate, first springs, a first bearing seat, a sleeve, a grinding wheel, a moving bar, a 7-shaped plate, a vertical bar, a second spring, an oscillating plate, etc. The legs are fixedly connected, in a symmetric manner, to left and right sides of the bottom of the lateral plate. A through hole, which has a function of guiding, is formed on a left side of the lateral plate. The moving bar is located in the through hole. In the present disclosure, a driving motor is started to rotate the grinding wheel, the grinding device is moved to enable the grinding wheel to be located above a raised joint, and then the oscillating plate is pulled so that the grinding wheel can move downward to grind the raised joint.

Abstract: Assembling method of flattening-realizable file rack, comprising following steps: gluing; grey board pasting; folding; opening-burying; and forming.

Abstract: A card edge connector includes an insulative housing and two rows of terminals. The insulative housing includes two side walls. The terminals include signal terminals and grounding terminals each having a retaining portion, a contact portion, and a soldering portion. Two adjacent terminals in each row constitutes a terminal pair. The soldering portions of each terminal pair are aligned with each other in a longitudinal direction and the soldering portions of an adjacent terminal pair are deviate from each other in the longitudinal direction so that the soldering portions of the two rows of the terminals are arranged in four rows. The terminal pairs include three types of arrangement and in each arrangement the soldering portions of the ground terminals are placed next to the soldering portions of the signal terminals in the closest way in order to reduce interference during transmission.

Abstract: The present disclosure is directed to freestanding films for a lithium-metal-anode comprising a 2D arrays of nanocrystals of a transition metal nitride, carbide, or mixture and optionally a MXene as a conductive binder, and methods of making and using the same.

Abstract: This disclosure is directed to composites comprising a polymeric film coated on one or both sides with a MXene material, as well as lithium metal electrodes and components thereof, including MXene-polymer composite separators.

Abstract: Embodiments of the present disclosure relate to a method for managing backup data, an electronic device, and a computer program product. This method comprises: determining a number of times of space recycling operations that have been executed on a backup data block; determining, based on the number of times, a current popularity of the backup data block, the current popularity at least indicating a probability that the backup data block will be recycled in a to-be-executed space recycling operation; and moving, based on a determination that a former storage area where the backup data block is located does not correspond to the current popularity, the backup data block to a target storage area corresponding to the popularity. In this way, data with similar popularity can be managed in a more centralized manner, thereby reducing data rewriting caused by subsequent space recycling.

Abstract: An electrical connector includes an insulative elongated housing with an elongate central slot for receiving a daughter card, a plurality of contacts disposed in the housing by two sides of the central slot, and a mounting section located at one end of the housing with a unitary ejector pivotally mounted therein. The ejector forms a receiving slot for receiving the daughter board, and a pair of engagement arms located by two opposite sides of the receiving slot with corresponding hook at front ends to be engaged within corresponding engagement slots formed in the mounting section. Each deflectable engagement arms includes a metal piece associated therewith not only preventing breaking of the deflectable engagement arm during rotation of the ejector but also enhancing engagement between the ejector and the housing.

Abstract: The present disclosure relates to a method, device and computer program product for managing a storage system. The storage system comprises a first storage device and a second storage device. In the method, a data object specified by a write request is searched for in the first storage device, the write request specifying the data object that is to be written to the storage system. According to determining that the data object is not present in the first storage device, the second storage device is notified to search for the data object in the second storage device. The data object is written to the storage system according to a search result of searching for the data object in the second storage device. An address mapping of the data object is determined based on an address to which the data object is written in the storage system, where the address mapping indicates an address of the data object in the storage system, and the method is implemented at the first storage device.

Abstract: A card edge connector includes an insulative elongated housing with two opposite end towers in the longitudinal direction, two rows of contacts disposed in the housing and opposite to each other in the transverse direction perpendicular to the longitudinal direction, and a pair of ejectors rotatably retained to the corresponding end towers, respectively. Each end tower unitarily forms a U-shaped structure for receiving a side edge region of the daughter card. A metallic U-shaped reinforcing piece is assembled upon each U-shaped structure in a compliance manner to directly confront the corresponding side edge of the daughter card in the longitudinal direction while being unexposed from the side edge region of the daughter card in the transverse direction.

Abstract: A system for simultaneously and microscopically measuring vapor cell coating film energy transfer and relaxation characteristics at nanometer scales includes a space relaxation characteristic detection unit which includes a laser, an optical isolator, a spatial light filter, a reflector, a Glan-Taylor polarizer, a first quarter-wave plate, a spatial light modulator, a focusing lens, a second quarter-wave plate, a polarizing film, a PD detection unit, an I/V amplification unit, a data acquisition unit, a spectroscope and an optical chopper, an atomic force microscope detection unit for energy transfer micro-areas, a shielding cylinder, a coated alkali metal atomic vapor cell, a data processing unit and a magnetic field controlled coil.

Abstract: A card edge connector includes: an elongated insulative housing comprising two longitudinal walls, a center slot defined between the longitudinal walls, and plural terminal receiving passageways arranged along the longitudinal walls; and plural terminals fixed in the terminal receiving passageways, wherein each of the longitudinal walls defines a first recessed portion extending along a longitudinal direction and plural second recessed portions extending upwardly from the first recessed portion at an outer surface thereof, the second recessed portions are arranged at intervals along the longitudinal direction, the first recessed portion goes through a bottom face of the longitudinal wall, and the second recessed portions does not go through a top of the longitudinal wall.

Abstract: Embodiments of the present disclosure provide a method, a device and a computer program product for transmitting data between different types of storage systems. In one embodiment, for example, the method comprises recovering data from a file to be transmitted in a first backup system. The method also comprises sending the recovered data to a backup client corresponding to a second backup system. In one embodiment, the backup client is installed in a container of the first backup system and the first and the second backup systems belong to different types. The method further comprises transmitting the recovered data from the backup client installed in the first backup system to the second backup system.

Abstract: Some embodiments of the disclosure provide a semiconductor device. The semiconductor device comprises: a substrate; a first nitride semiconductor layer on the substrate; a second nitride semiconductor layer on the first nitride semiconductor layer and having a band gap larger than a band gap of the first nitride semiconductor layer; an intermediate layer disposed on the second nitride semiconductor layer; and a conductive structure disposed on the intermediate layer, wherein a first even interface is formed between the intermediate layer and the second nitride semiconductor layer.

Abstract: The invention relates to compounds of Formula (I), (Ia), (Ib), (II) or (III), salts thereof, pharmaceutical compositions thereof, as well as therapeutic methods of treatment and prevention.

Abstract: A receptacle connector includes an insulative housing having an upper wall and a lower wall with a plurality of vertical walls linked therebetween to form corresponding passageways alternately arranged with the vertical walls. A plurality of contacts are disposed in the corresponding passageways, respectively. A plurality of upper apertures are formed in the upper wall to communicate with the corresponding passageways. A plug connector is adapted to be mated with the receptacle connector and includes an insulative body with opposite top wall and bottom wall. A plurality of through openings are formed in the top wall. A plurality of grooves are formed in an interior face of the top wall to communicate the through openings of the plug connector with the corresponding apertures of the receptacle connector.