Abstract: An equipment for sealing-performance test includes a housing, a fixed mechanism and a detection part; the housing is configured to accommodate the fixed mechanism, and an abutting part is formed in the housing and is configured to abut against an outer side of a sealing ring; the fixed mechanism includes a central rod, a plurality of fixed blocks and a driving assembly, the central rod extends along a direction parallel to the axial direction of the central rod, the plurality of fixed blocks are evenly disposed along a circumferential direction of the central rod, and the driving assembly is configured to drive the plurality of fixed blocks to move along a radial direction of the central rod; a test cavity and a detection cavity are formed in the housing, the test cavity is filled with a test fluid, and is separated from the detection cavity by the sealing ring.

Abstract: A performance testing device for the piston rod sealing assembly includes a bracket, a support apparatus, a drive apparatus and a leakage detection apparatus, where the support apparatus includes a cylinder body that is internally provided with a movable channel, and the movable channel is configured to allow a piston rod equipped with a sealing component to pass therethrough; the drive apparatus is provided on the bracket and configured to be connected with the piston rod; the leakage detection apparatus includes a limit member and an oil receiver, the limit member is provided with a detection channel and an oil channel and connected to the cylinder body, the detection channel is communicated with the movable channel and configured to allow the piston rod to pass therethrough; one end of the oil channels is communicated with the detection channel and the other end thereof is communicated with the oil receiver.

Abstract: A full temperature range simulated rotated moving bed PSA process for extracting H2 and NH3 from GaN-MOCVD exhaust gas, includes a medium and high temperature PSA ammonia concentration system and an intermediate gas PSA hydrogen purification system, which include multiple axial flow fixed bed adsorption towers arranged in the center of upper and lower two multichannel rotary valves, mounted on the periphery of an annular rotary tray, and connected through pipelines. For the gas flowing through rotary valve channels, pipelines between inlet and outlet ends of the channels and inlet and outlet ends of the adsorption towers, and adsorption bed layers, mass transfer in respective adsorption and desorption steps is completed while the gas entering and exiting the inlets and outlets of the adsorption towers and adsorption bed layers while rotating. Thus, the simulated rotated moving bed PSA process is formed.

Abstract: An information transmission method, a terminal, and a non-transitory computer-readable storage medium are provided. The information transmission method includes: sending, by a first terminal, control information. The control information includes request information or coordination information.

Abstract: An embodiment of a semiconductor package apparatus may include technology to pre-process an image to simplify a background of the image, and perform object detection on the pre-processed image with the simplified background. For example, an embodiment of a semiconductor package may include technology to pre-process an image to subtract the background from the image and perform object detection on the pre-processed image with the background subtracted. Other embodiments are disclosed and claimed.

Abstract: This application describes systems and methods for facilitating memory access in flash drives. An example method performed by a memory controller may include receiving, from a host, a write command comprising data to be written into a flash memory; splitting the data into a first portion and a second portion; storing the first portion into a static random-access memory (SRAM) in the memory controller; storing the second portion into a dynamic random-access memory (DRAM) communicatively coupled with the memory controller; initiating a configuration operation corresponding to the write command; fetching the first portion from the SRAM and the second portion from the DRAM in response to the flash translation layer indicating a ready status to store the data into the flash memory; combining the fetched first portion and the fetched second portion; and storing the combined first portion and the second portion into the flash memory.

Abstract: A sidelink resource determining method and a terminal, belonging to the field of communication technologies. The sidelink resource determining method according to embodiments of this application includes: A first terminal determines a first physical sidelink feedback channel PSFCH resource and/or a first physical sidelink shared channel PSSCH resource; and/or the first terminal sends first information, where the first information is used to indicate the first PSFCH resource.

Abstract: A method for restoring a network topology and an apparatus are disclosed. A topology computing apparatus obtains MAC entries of a plurality of network devices; determines a port on which an uplink destination MAC address is learned as an uplink port of the plurality of network devices, where the uplink destination MAC address is a MAC address that appears most frequently in the MAC entries of the plurality of network devices; then determines a plurality of initial sets, and determines a connection relationship between the plurality of network devices based on the plurality of initial sets; and finally determines, based on the connection relationship between the plurality of network devices and the uplink port, a network topology corresponding to the plurality of network devices.

Abstract: A device and a method for determining a microvibration effect on a millisecond-level space optical sensor are provided. The device includes: a light source, a star simulator, an air flotation vibration isolation platform, a suspension system/air flotation system, a zero stiffness system, a supporting system, a six-degree-of-freedom microvibration simulator, a signal driving apparatus, and a data acquisition and processing system. In the device for determining a microvibration effect on a space pointing measurement apparatus, a free boundary condition and a zero gravity environment are simulated by using a suspension system and a zero stiffness system. A light source and a star simulator simulate a star at infinity. A six-degree-of-freedom microvibration simulator simulates an on-orbit microvibration mechanical environment which is used as an input of a test. Extremely high-precision sensors collect system response data.

Abstract: A deformation-driven solid-phase extrusion device and a one-step alloy bar preparation method by using the same are provided. The device includes a stir tool, an extrusion container and an ejector rod. The stir tool has an integral structure composed of an upper mounting part and a lower working part and having a hollow channel. The lower working part is disposed in a groove of the extrusion container, and the ejector rod is disposed in the hollow channel of the stir tool. The method includes adding alloy powder to the extrusion container, enabling the stir tool to exert a pressure and revolve at a high speed to cause large plastic deformation of the powder and generate heat by friction and deform among powder and the friction working surface of the working part, sintering the alloy powder and extruding the same through the hollow channel of the stir tool.

Abstract: This application discloses a signal receiving method and apparatus, an electronic device, and a storage medium. The method includes: obtaining a first signal strength and a second signal strength before a first signal is received; in a case that the second signal strength is greater than the first signal strength and that a difference between the second signal strength and the first signal strength is greater than or equal to a first threshold, determining that the first signal is an interference signal and determining not to receive the interference signal; and in a case that the second signal strength is less than or equal to the first signal strength, performing first receiving and processing on the first signal; where the second signal strength is signal strength from a corresponding access point, and the first signal strength is signal strength of the first signal.

Abstract: Embodiments of the present disclosure provide a control method and apparatus for hybrid process recipes, and a device and a medium. The control method includes: acquiring hybrid process recipe operation groups associated with process recipes operated by etching chambers of an etching machine, where different process recipes correspond to different hybrid process recipe operation groups; acquiring a switching rule of different hybrid process recipe operation groups; and controlling, based on a reserved process recipe for a real-time reserved demand of a target etching chamber and a requirement of the switching rule, the etching machine to automatically switch to a target hybrid process recipe operation group associated with the reserved process recipe.

Abstract: An equipment for sealing-performance test includes a housing, a fixed mechanism and a detection part; the housing is configured to accommodate the fixed mechanism, and an abutting part is formed in the housing and is configured to abut against an outer side of a sealing ring; the fixed mechanism includes a central rod, a plurality of fixed blocks and a driving assembly, the central rod extends along a direction parallel to the axial direction of the central rod, the plurality of fixed blocks are evenly disposed along a circumferential direction of the central rod, and the driving assembly is configured to drive the plurality of fixed blocks to move along a radial direction of the central rod; a test cavity and a detection cavity are formed in the housing, the test cavity is filled with a test fluid, and is separated from the detection cavity by the sealing ring.

Abstract: The present disclosure discloses a method for calculating a safe drilling fluid density in a fractured formation, including the following steps: S1, performing image processing to identify a downhole fracture; S2, establishing three-dimensional (3D) geological models based on parameters of the downhole fracture, and establishing a drilling wellbore model based on a size and length of a wellbore; S3, assigning the model with material parameters, boundary conditions, and upper and lower bounds of an initial drilling fluid density, and calculating accuracy; S4, solving the 3D geological models using a 3-dimension distinct element code (3DEC) and determining stability of a well wall; S5, determining upper and lower bounds of a drilling fluid density using dichotomy; S6, repeating steps S4 to S5; and S7, after set accuracy conditions are reached, saving and outputting the safe drilling fluid density.

Abstract: A material testing machine, including a machine body, a first fixing element, a second fixing element and a detection assembly; the first and the second fixing elements are mounted to the machine body, the first fixing element is configured to mount a first testing element, and the second fixing element is configured to mount a second testing element; in a first state, the first and the second testing elements are in sliding contact; in a second state, the first fixing element drives the first testing element to collide with the second testing element; the detection assembly is configured to detect a target parameter, and in the first state, the target parameter includes a friction force and/or, a friction sound between the first and the second testing elements; and in the second state, the target parameter includes a collision force received by the first or the second testing element.

Abstract: The present disclosure discloses a method for calculating a safe drilling fluid density in a fractured formation, including the following steps: S1, performing image processing to identify a downhole fracture; S2, establishing three-dimensional (3D) geological models based on parameters of the downhole fracture, and establishing a drilling wellbore model based on a size and length of a wellbore; S3, assigning the model with material parameters, boundary conditions, and upper and lower bounds of an initial drilling fluid density, and calculating accuracy; S4, solving the 3D geological models using a 3-dimension distinct element code (3DEC) and determining stability of a well wall; S5, determining upper and lower bounds of a drilling fluid density using dichotomy; S6, repeating steps S4 to S5; and S7, after set accuracy conditions are reached, saving and outputting the safe drilling fluid density.

Abstract: A pressure-adjustable auxiliary control system for high-pressure gas sealing detection includes: a high-pressure chamber environment monitoring unit configured to construct high-pressure test gas sealing environment and to test sealing performance of a sealing member; a first gas pipeline divided into two branches, of which one branch is connected to the high-pressure chamber environment monitoring unit as a first gas replacement path; a second gas pipeline which is connected to a test gas pressurization path together with the other branch of the first gas pipeline, where a first booster pump processing unit and a second booster pump processing unit are sequentially arranged in the test gas pressurization path for pressurizing the test gas, and are connected to the high-pressure chamber environment monitoring unit; a system air control module configured for control of respective air control valves; and a booster pump air control module and a driving air source preprocessing unit.

Abstract: A method for predicting and optimizing an ROP for oil and gas drilling based on Bayesian optimization includes: acquiring raw drilling data according to a preset sampling period, constructing an initial sample data set based on the raw drilling data, constructing an ROP prediction model based on the initial sample data set, and predicting an ROP at a next sample point through a Gaussian process regression based on the ROP prediction model. The present invention realizes rapid analysis of historical drilling data and accurate prediction of an ROP range at a sample point in a feasible domain. The method can obtain an optimized ROP and an optimized engineering parameter through Bayesian optimization, and obtain an engineering parameter corresponding to an optimal ROP. The method has few restrictions on the drilling engineering parameter and the raw formation parameter, improves prediction accuracy, and avoids the problem of blurred parameter value boundaries.

Abstract: A method a for controlling a distribution sequence for a semiconductor device includes: acquiring the quantity of all chambers and an actual working duration of each radio frequency device in the machines; providing an optimal working duration of the radio frequency device to calculate an average interval; sorting all the data to form a first queue data set, and obtaining a difference between adjacent data in the first queue data set; using a difference between adjacent consecutive data as a feature value corresponding to the former or latter data in the consecutive data, and using data that does not correspond to the difference as a feature value corresponding to the data; obtaining a second queue data set and a third queue data set; and obtaining a distribution sequence of distributing N batches of wafers to all the radio frequency devices.

Abstract: A method for predicting and optimizing an ROP for oil and gas drilling based on Bayesian optimization includes: acquiring raw drilling data according to a preset sampling period, constructing an initial sample data set based on the raw drilling data, constructing an ROP prediction model based on the initial sample data set, and predicting an ROP at a next sample point through a Gaussian process regression based on the ROP prediction model. The present invention realizes rapid analysis of historical drilling data and accurate prediction of an ROP range at a sample point in a feasible domain. The method can obtain an optimized ROP and an optimized engineering parameter through Bayesian optimization, and obtain an engineering parameter corresponding to an optimal ROP. The method has few restrictions on the drilling engineering parameter and the raw formation parameter, improves prediction accuracy, and avoids the problem of blurred parameter value boundaries.