Abstract: An internal blowout-prevention gas-retaining connector has a body mounted at the bottom of a drill pipe. The body includes a valve pipe section and a connecting pipe section arranged from top to bottom. The bottom of the valve pipe section is inserted into the top of the connecting pipe section. The blowout-prevention valve seat is provided at a bottom end of the valve pipe section while a blowout-prevention valve bonnet is provided on a bottom surface of the valve pipe section. The edge of the blowout-prevention valve bonnet is rotatably connected to a bottom surface edge of the valve pipe section. A torsion spring is provided on a bottom surface of the blowout-prevention valve bonnet. One end of the torsion spring is connected to the bottom surface of the blowout-prevention valve bonnet while the other end is connected to the inner wall of the connecting pipe section.

Abstract: A method of creating a high-definition (HD) map of a roadway includes receiving a multi-layer probability density bitmap. The multi-layer probability density bitmap represents a plurality of lane lines of the roadway sensed by a plurality of sensors of a plurality of vehicles. The multi-layer probability density bitmap includes a plurality of points. The method further includes recursively conducting a hill climbing search using the multi-layer probability density bitmap to create a plurality of lines. In addition, the method includes creating the HD map of the roadway using the plurality of lines determined by the hill climbing search.

Abstract: A method for merging lane line maps includes determining a road topology of a road segment. The method also includes identifying a plurality of fused points based at least in part on the road topology and based at least in part on a first lane line map of the road segment and a second lane line map of the road segment. The method also includes forming a fused lane line map based at least in part on the plurality of fused points. The method also includes performing a first action based at least in part on the fused lane line map.

Abstract: Provided are variant B-cell maturation antigen (BCMA) cysteine-rich domain (CRD) molecules capable of binding to ligands B-cell Activating Factor of the TNF family (BAFF) and A Proliferation Inducing Ligand (APRIL) with higher affinity compared to wild-type BCMA. In some aspects, also provided are variant BCMA fusion proteins or constructs comprising an immunoglobulin Fc domain, dimers, conjugates, methods for producing the molecules, and related methods and uses thereof.

Abstract: The present disclosure provides a cleaning and recovery method and device for a heterogeneous executor in a mimic switch, and a mimic switch, the method includes: a mimic scheduler determining a designated heterogeneous executor that needs to be cleaned, marking the designated heterogeneous executor that needs to be cleaned as in a cleaning state, and sending a cleaning instruction to the designated heterogeneous executor; the designated heterogeneous executor sending a normal protocol negotiation message to the mimic scheduler to try to interact with the mimic scheduler; the mimic scheduler receiving the protocol negotiation message and detecting whether the designated heterogeneous executor is in the cleaning state; if in the cleaning state, the mimic scheduler constructing a training message, and sending the training message to the designated heterogeneous executor for protocol training; repeating sending and processing the protocol negotiation message until the designated heterogeneous executor is in a no

Abstract: A simulation device for magnetic closing of flap valve is disclosed, which includes a worktable, a driving mechanism for driving the worktable to rotate, a valve seat, a magnetic valve cover movably connected with the valve seat, a first magnet for repelling the magnetic valve cover, a cylinder, a lifting equipment for driving the cylinder to rise and fall. When the cylinder is inserted into the valve seat driven by the lifting equipment, the cylinder prevents the closure of the magnetic valve cover. When the cylinder is out of contact with the magnetic valve cover driven by the lifting equipment, the magnetic valve cover is closed, and the worktable in the simulation device can rotate and turn over, so that the closing process of flap valve (valve seat and valve cover) in any direction of deep drilling coring under the action of magnetic force is simulated.

Abstract: A semiconductor device includes source/drain regions, a gate structure, a first gate spacer, and a dielectric material. The source/drain regions are over a substrate. The gate structure is laterally between the source/drain regions. The first gate spacer is on a first sidewall of the gate structure, and spaced apart from a first one of the source/drain regions at least in part by a void region. The dielectric material is between the first one of the source/drain regions and the void region. The dielectric material has a gradient ratio of a first chemical element to a second chemical element.

Abstract: A semiconductor device includes a first metal-oxide-semiconductor (MOS) transistor and a second MOS transistor on a substrate. The second MOS transistor is electrically connected to the first MOS transistor. The first MOS transistor includes a first gate dielectric layer and a first gate electrode on the first gate dielectric layer. The second MOS transistor includes a second gate dielectric layer and a second gate electrode on the second gate dielectric layer. The second gate electrode includes a first portion of a first conductivity type and second portions of a second conductivity type on opposite sides of the first portion. The width of the first portion is less than half of the total width of the second gate electrode.

Abstract: A method for crowd-sourcing lane line map data for a vehicle includes receiving a plurality of observations. The method also includes classifying the plurality of observations into a plurality of observation categories. Each of the plurality of observation categories includes at least one of the plurality of observations. The method also includes determining a plurality of aligned point clouds based at least in part on the plurality of observations. One of the plurality of aligned point clouds corresponds to each of the plurality of observation categories. The method also includes determining a plurality of lane line maps based at least in part on the plurality of aligned point clouds. One of the plurality of lane line maps corresponds to each of the plurality of aligned point clouds. The method also includes updating a map database based at least in part on the plurality of lane line maps.

Abstract: A charging unit guidance system includes a processor and a memory. The memory includes instructions that upon execution by the processor, cause the processor to receive a sequence of user states associated with a user of a first autonomous vehicle, each user state being one of a walking state and an at-charging-unit state and the sequence of user states being based on a sequence of observed user speeds associated with detected user position data associated with movement of the user from the first autonomous vehicle to a charging unit and at the charging unit, determine a charging unit location of the charging unit based on a correlation between the at-charging-unit states in the sequence of user states and the user position data, and upload the charging unit location associated with the charging unit to an edge computing system, the edge computing system being configured to provide guidance instructions to the charging unit to a second autonomous vehicle based at least in part on the charging unit location.

Abstract: The present disclosure relates to a multi-stage temporary plugging fracturing method based on a stress cage effect, a device thereof and a storage medium, which are applied to the technical field of oil and gas exploitation. The method includes: determining a plugging point by acquiring a weak stress position on a major fracture; determining the consumption of temporary plugging deflection fluid by calculating a net pressure in a fracture that needs to be increased to generate a branch deflection fracture at the position where a principal stress is minimum; plugging a weakest stress position in the major fracture to form an artificial shielding layer, preventing subsequent fluid pressure from passing forward, thereby changing a geostress field near this position, thus forming an additional induced stress field near the weak position, generating a stress cage effect, and realizing formation of a multi-stage temporary plugging branch fracture in vertical wells.

Abstract: A method includes forming a stack of channel layers and sacrificial layers on a substrate. The channel layers and the sacrificial layers have different material compositions and being alternatingly disposed in a vertical direction. The method further includes patterning the stack to form a semiconductor fin, forming an isolation feature on sidewalls of the semiconductor fin, recessing the semiconductor fin, thereby forming a source/drain recess, such that a recessed top surface of the semiconductor fin is below a top surface of the isolation feature, growing a base epitaxial layer from the recessed top surface of the semiconductor fin, depositing an insulation layer in the source/drain recess, and forming an epitaxial feature in the source/drain recess, wherein the epitaxial feature is above the insulation layer. The insulation layer is above the base epitaxial layer and above a bottommost channel layer.

Abstract: A method for extracting an oil storage tank based on a high-spatial-resolution remote sensing image is provided, including: acquiring an oil storage tank sample, and randomly dividing the oil storage tank sample into a training set and a testing set; building an oil storage tank extraction model based on a Res2-Unet model structure, wherein the Res2-Unet is a deep learning network based on a UNet semantic segmentation structure, and a Res2Net convolution block is configured to change a feature interlayer learning to a granular learning and is arranged in a residual mode; and performing a precision verification on the testing set.

Abstract: The present invention provides a method for producing a drug product comprising a combination of highly purified collagenase I and collagenase II from Clostridium histolyticum. The method utilizes an improved medium for the cultivation of Clostridium histolyticum which includes a non-meat-derived (i.e., non-mammalian) peptone or vegetable peptone. The method includes one or more of: (1) reducing glucose content in the meat-free or vegetable-derived media; and (2) increasing the salt concentration in the meat-free or vegetable-derived media. Also provided is a drug product which includes collagenase I and collagenase II at an optimized fixed mass ratio, and which has a purity of greater than at least 95%.

Abstract: A driver command interpreter system for a vehicle includes one or more controllers that execute instructions to receive a plurality of dynamic variables, vehicle configuration information, and driving environment conditions, and determine a target vehicle state during transient driving conditions based on the plurality of dynamic variables from the one or more sensors, the vehicle configuration information, and the driving environment conditions. The one or more controllers build a transient vehicle dynamic model based on the target vehicle state during transient driving conditions, the plurality of dynamic variables, the vehicle configuration information, and the driving environment conditions, and solve for desired zeros corresponding to the target vehicle state during transient conditions.

Abstract: A method for a memory system is disclosed. The memory system can include a memory controller and a memory device. The method can include receiving data that includes bits and is to be written into the memory device, counting a first bit number of the bits corresponding to a first state and a second bit number of the bits corresponding to the second state, and in response to the second bit number of the bits being larger than the first bit number of the bits, the flipping operation is performed.

Abstract: Device under test (DUT) simulation equipment includes: a first circuit board including a first field programmable gate array (FPGA); a second circuit board including a processor; and a power distribution board, wherein the first circuit board is connected to the power distribution board, and the power of the first circuit board is supplied by the power distribution board, wherein the second circuit board is connected to the power distribution board, and the power of the second circuit board is supplied by the power distribution board, wherein when the DUT simulation equipment is connected to a tester to perform testing, the DUT simulation equipment simulates the performance of a DUT providing a response signal after receiving a test signal from the tester, and wherein, in the DUT simulation equipment, only the first circuit board receives the test signal from the tester, and the second circuit board controls the first circuit board by means of a control signal.

Abstract: A method for a memory system is disclosed. The memory system can include a memory controller and a memory device. The method can include receiving data that includes bits and is to be written into the memory device, counting a first bit number of the bits corresponding to a first state and a second bit number of the bits corresponding to the second state, and in response to the second bit number of the bits being larger than the first bit number of the bits, the flipping operation is performed.

Abstract: A toolbox with a side hanging function is provided. The toolbox with a side hanging function includes a box body and a box cover, a side hanging groove being defined on a side wall of the box body; an elastic jamming tongue being provided on an inner side of the side hanging groove; and the elastic jamming tongue being matched to the side hanging groove; and wherein the elastic jamming tongue being connected to a side wall of the box body. The present use the side wall of the box body as a new space for storing items, and provides side hanging groove and elastic jamming tongue on the side wall, the side hanging groove is used to hang items, the elastic jamming tongue is used to fix and anti detachment. The toolbox with a side hanging function has multiple functions and has wide application prospects.