Abstract: A mop bucket with clean and dirty water separation, comprising an outer bucket. A partition is arranged inside the outer bucket, and a clean water area and a dirty water area are respectively located on both sides of the partition in the outer bucket; a tub and a reciprocating pump driven by the tub capable of delivering water into the tub are arranged in the outer bucket, a valve assembly is arranged at a bottom of the tub to discharge water in the tub to the dirty water area, and the valve assembly has a movable water outlet end; only when the tub is located at an upper limit position and the water outlet end moves above the dirty water area, the valve assembly switches from the closed state to an open state. With the mop bucket, the mop can be conveniently operated for cleaning.

Abstract: The invention discloses a method for cutting a substrate wafer from an indium phosphide crystal, and belongs to the field of semiconductor substrate preparation, comprises the following steps of: 1) orientating, cutting the head and the tail of a crystal bar, adjusting the orientation and trying to cut the crystal bar until a wafer with a required crystal orientation cut, wherein the cutting end face is an orientation end face; 2) multi-wire cutting, on a multi-wire cutting apparatus, dividing a crystal bar parallel to an orientation end face into wafers; 3) cleaning, cleaning the wafer until no residue and no dirt existing on the surface; 4) circle cutting, performing circle cutting on the wafer to cut the desired crystal orientation area.

Abstract: The present disclosure relates to a technical field of coal mining, in particular to a surrounding rock stability control method adapted for a coal mining area main roadway. The method comprises the following steps: reinforcing support on a roof and two sides of the mining area main roadway on a basis of an original support form; digging a safety roadway along a stop line of a present working face required by coal mine design, and supporting the safety roadway, wherein a protective coal pillar is formed between the safety roadway and the mining area main roadway; performing slitting blasting on the roof in the safety roadway, wherein blast holes are arranged on a roadway corner line on one side of the present working face to form a pre-splitting slit; and performing stoping at a next working face after completing coal mining at the present working face when stoping at the present working face advances to the safety roadway.

Abstract: The invention discloses a device and a method for continuous VGF crystal growth through reverse injection synthesis, relating to a device for preparing a semiconductor crystal and growing a single crystal, in particular to a method and a device for continuously growing the crystal in situ by using a VGF method and reverse injection synthesis. The device includes a furnace body, a crucible, a heat preservation system, a heating system, a temperature control system and a gas pressure regulation system, wherein the crucible is arranged in the furnace body, has a synthesis unit at its upper part, and has a crystal growth unit and a seed crystal unit at its lower part, and the synthesis unit is communicated with the crystal growth unit through capillary pores.

Abstract: The disclosed embodiments relate to a content-recommendation method and apparatus, an electronic device, and a system. The method comprises: searching, by a recommendation system according to a determined tag, a content database for content matching the tag; and recommending, by the recommendation system, the matching content to a user corresponding to the tag. Content in the content database is determined according to first-type content acquired by an internal-operation system by means of matching and second-type content acquired by an external-operation system by means of matching.

Abstract: Disclosed is an apparatus for preparing a large-size single crystal, which relates to the field of semiconductor material preparation, and more particularly, to an apparatus for preparing a large-size single crystal from a plurality of small-size single crystals by connecting them in solid states. The apparatus includes a hydrocooling furnace, a solid connection chamber hermetically disposed in the hydrocooling furnace, and combined fixtures provided in the solid connection chamber, wherein a plurality of crystal pieces are fixed by the combined fixtures, a top column or a stress block is used for pressing the crystal piece through the combined fixtures, a heating wire surrounding the solid connection chamber is provided in the hydrocooling furnace, a vacuum tube is communicated with the solid connection chamber, and a thermocouple is disposed close to the combined fixtures.

Abstract: Embodiments of the present disclosure provide a method for updating an alarm status of a device, performed by a device alarm status presentation apparatus, including: parsing a received alarm status change message to obtain a device identifier set, wherein the device identifier set contains a device identifier of each device whose alarm status has changed; updating a globally unique flag according to the alarm status change message; sending a query request carrying the device identifier set to a query executer; and determining whether to update the alarm status of the device according to the current globally unique flag and a query response returned by the query executer.

Abstract: A purification apparatus and purification method of a non-metallic semiconductor material relate to the field of preparation of high-purity materials, and are especially applicable to preparation of high-purity non-metal materials, in particular to an apparatus and method for purifying a non-metallic semiconductor material by means of a metal melt. The apparatus includes a furnace body, a pressure balance valve, a crucible disposed in the middle of the lower part of the furnace body, a heating and supporting structure for the crucible, a liftable injection mechanism disposed right above the crucible, and a liftable and rotatable recovery mechanism disposed next to the liftable injection mechanism. The method is completed based on the purification apparatus, and includes: injecting the gasified non-metal material into the metal melt under a high pressure environment; reducing the ambient pressure, and collecting the bubbles volatilized from the metal melt to obtain the purified non-metal material.

Abstract: This application provides a service processing method and apparatus, a terminal device, and a chip, and relates to the field of communication technologies. When the terminal device carries a primary card and a secondary card, the secondary card uses one or more antennas by default to process an uplink/downlink transmission service. When the primary card is triggered to perform neighboring cell measurement (e.g., inter-frequency inter-RAT measurement), and a measurement band is the same as an operating band of the secondary card, the primary card may select an antenna different from an antenna used by the secondary card to perform neighboring cell measurement.

Abstract: Embodiments of this application disclose a channel arbitration method and an apparatus. After receiving an uplink grant for a first SIM card, a physical layer scheduler of a terminal device configures a transmission service priority of the first SIM card in a front-end arbiter as a first predicted priority, and configures PUSCH transmission information for the front-end arbiter based on the uplink grant, where if packeting for uplink scheduling is completed before an arbitration time point, the transmission service priority of the first SIM card is updated to a service priority of a MAC layer; the front-end arbiter arbitrates a transmission service of the first SIM card based on the PUSCH transmission information and the transmission service priority; and further, if the first SIM card is performing a voice service and the arbitration continuously fails, fallback to a DSDS 2.0 mode is triggered.

Abstract: There is provided a method comprising receiving, at an apparatus from a base station, data information comprising network coded blocks, decoding the network coded blocks, storing the decoded blocks in a memory, determining, based on an attribute, at least one of the decoded blocks in the memory to be sent to a user equipment and causing the determined at least one of the decoded blocks to be sent to the user equipment from the apparatus using network coding.

Abstract: A precharge system and method are provided. The precharge system comprises a load circuit, a precharge circuit and a control circuit. The load circuit comprises an input terminal, an input switch and a bus capacitor. The precharge circuit comprises a precharge resistor and a precharge switch. The precharge method comprises: during the load circuit being in a precharge mode, controlling the input switch to be in an off state, and controlling the precharge switch to switch between the on and off state for multiple times; and during the load circuit being in a work mode, controlling the input switch to be in an on state. During the load circuit being in the precharge mode, when the precharge switch is in the on state, a consuming power of the precharge resistor is larger than a threshold power and is smaller than or equal to a limit power of the precharge resistor.

Abstract: A power switch device driver with energy recovery is discussed. The power switch device adopts four switches and one inductor with appropriate control to insure the switching speed and save the power loss.

Abstract: A gate driver is configured to drive a normally-on device and a normally-off device coupled in series. The gate driver controls the normally-on device in response to a PWM signal, and to control a normally-off device to maintain ON in normal operations. If an under voltage condition of a negative power supply of a first driver used to drive the normally-on device, or a positive power supply of a second driver used to drive the normally-off device, or an input supply voltage is detected, the normally-off device is controlled to be OFF.

Abstract: A control circuit for controlling a multi-level buck converter having N pairs of switches serially connected between an input terminal and a logic ground, wherein N is an integer equal to or greater than 2. The control circuit has a comparing circuit, a selecting circuit and a delay circuit. The comparing circuit compares a voltage feedback signal indicative of an output voltage signal of the multi-level buck converter with a reference signal to generate a comparing signal. The selecting circuit generates N set signals based on the comparing signal. The delay circuit delays the N set signals to provide N delay set signals to control the N pairs of switches when the output voltage signal falls in ( 1 ± k ? % ) ? 1 N of an input voltage signal of the multi-level buck converter, ( 1 ± k ? % ) ? 2 N of the input voltage signal, . . . , or ( 1 ± k ? % ) ? N - 1 N of the input voltage signal, wherein k is a proportional coefficient.

Abstract: The present disclosure relates to methods and devices for graphics processing including an apparatus, e.g., a GPU. The apparatus may generate a table including a plurality of entries to store data associated with at least one of a constant value or an immediate value. The apparatus may also process, upon generating the table, first data including at least one of a constant value or an immediate value. Further, the apparatus may store, in the generated table, at least one of the constant value or the immediate value of the first data. The apparatus may also transmit, upon storing at least one of the constant value or the immediate value in the table, the table including the stored at least one of the constant value or the immediate value of the first data.

Abstract: A multi-dimensional space load and fire test system for a tunnel structure, which includes a multi-point loading self-balancing reaction force system having a rigid platform, two furnace body side-sealing apparatuses (22) and a model assembly and transport apparatus (23) for transporting and situating a tunnel model are on a track on the rigid platform (9), the two furnace body side-sealing apparatuses (22) are respectively used for sealing two end openings of the tunnel model, a tower-type combustion vehicle can be placed within an inner cavity of the tunnel model, a plurality of sets of evenly distributed self-adaptive loading apparatuses (3) used for exerting loading forces on an outer wall of the tunnel model are connected between two reaction force frames (1) of the multi-point loading self-balancing reaction force system.

Abstract: A 3-D package structure for isolated power module is discussed. The package structure has metal trace in a support layer (e.g. a substrate board), which is covered by two magnetic films from both sides, thus an effective transformer is formed. An IC die which contains a voltage regulator is stacked above the support layer, which significantly reduces the package size.