Abstract: A method produces tantalum powder. The method includes: (1) uniformly mixing a tantalum powder raw material, metal magnesium and at least one alkali metal and/or alkaline earth metal halide, loading the mixture into a container, and putting the container in a furnace; (2) raising the temperature of the furnace to 600-1200° C. in the presence of inert gas, and soaking; (3) at the end of soaking, lowering the temperature of the furnace to 600-800° C., vacuumizing the interior of the furnace to 10 Pa or less, soaking under the negative pressure so that the excessive metal is separated; (4) thereafter, raising the temperature of the furnace to 750-1200° C. in the presence of inert gas, and soaking so that the tantalum powder is sintered in the molten salt after oxygen reduction; (5) then cooling to room temperature and passivating to obtain a mixed material containing halide and tantalum powder; and (6) separating the tantalum powder from the resulting mixture.

Abstract: A method of reconstructing transcranial images using a dual-mode ultrasonic phased array includes steps of: controlling channels to emit energy toward an intracranial target point of a patient; respectively generating backscattered radiofrequency (RF) data by using the channels to receive backscattered energy reflected from the intracranial target; and reconstructing an acoustic distribution image based on those backscattered RF data in real-time. Compared with Pre-Treatment Ray Tracing Method, the present invention can display intracranial pressure distribution in real-time; compared with MR Thermometry, the present invention can be applied to low-energy applications without temperature change; and compared with Passive Cavitation Imaging, the present invention can stably present acoustic distribution images without relying on microbubbles.

Abstract: A method for preparing quartz glass with low content of hydroxyl and high purity, includes providing silica powders including hydroxyl groups. The silica powders are dehydroxylated, which includes drying the silica powders at a first temperature, heating the silica powders up to a second temperature and introducing a first oxidizing gas including halogen gas, thereby obtaining first dehydroxylated powders, and heating the first dehydroxylated powders up to a third temperature and introducing a second oxidizing gas including oxygen or ozone, thereby obtaining second dehydroxylated powders. The second dehydroxylated powders are heated up to a fourth temperature to obtain a vitrified body. The vitrified body is cooled to obtain the quartz glass with low content of hydroxyl and high purity. The quartz glass prepared by the above method has low content of hydroxyl and high purity. A quartz glass with low content of hydroxyl and high purity is also provided.

Abstract: The present invention discloses a three-dimensional model and material merging method, device, terminal, storage medium, and rendering method, which belongs to the technical field of graphic rendering. The method comprises obtaining three-dimensional model files, material files and texture maps; determining the layout of the texture map; de-duplicating the material, merging the texture map of each channel according to the determined texture layout to obtain the texture map puzzle of each channel; optimizing the storage size of the three-dimensional models and texture map puzzles of each channel to generate and store the configuration file. The present method improves the speed of three-dimensional model and material merging, reduces the amount of data storage, thereby reduces the amount of data loading of the rendering CPU, and thus improves the rendering efficiency.

Abstract: A modified immune effector cell may be one in which the functions of a T cell antigen receptor (TCR) and major histocompatibility complexes (MHCI, MHCII) in the modified immune effector cell are inhibited in a T cell. Such a modified immune effector cell may include a chimeric antigen receptor (CAR) targeting GD2. Such a modified immune effector cell may knock out TCR and HLA-A genes expressed by the cell while recognizing surface antigens of tumor cells, so that multiple effects of improving the anti-tumor effect of CAR-T cells, prolonging the survival time of the cells, and reducing the immune rejection response caused by allogeneic cell therapy may be reduced.

Abstract: A method for detecting and compensating CNC tools being implemented in an electronic device, receives from a detector first parameters and second parameters in respect of a first tool. Such first parameters include at least one of service life, blade break information, and blade chipping information of the first tool, and such second parameters include at least one of length extension information, length wear information, radial wear information, and blade thickness wear information of the first tool. Based on the first parameters, instructions to process the workpiece are transmitted or not. Upon receiving the second parameters, instructions to adjust operation of the first tool are transmitted, to compensate for deterioration in normal use.

Abstract: Disclosed are a target LED chip with a reflective layer and a manufacturing method. The method comprises providing a target substrate to a bottom of an initial LED chip, to obtain a first LED chip; depositing a first target liquid onto a top surface of the first LED chip to form a target protective layer, so as to obtain a second LED chip; etching the second LED chip from the target protective layer, to obtain a third LED chip; treating the third LED chip according to a first target method to form reflective layers, so as to obtain a fourth LED chip; and removing top reflective layers, second side wall reflective layers and first sub-protective layers of the plurality of second LED sub-units, to obtain the target LED chip comprising the plurality of target LED sub-units and the target substrate.

Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of processing video data includes determining, for a conversion between a video block of a video and a bitstream of the video, a gradient of a prediction vector at a sub-block level for the video block according to a rule, wherein the rule specifies to use a same gradient value is assigned for all samples within a sub-block of the video block; and performing the conversion based on the determining.

Abstract: A negative electrode composition includes a silicon containing material and a crosslinked polymer containing coating surrounding at least a portion of the silicon containing material. The crosslinked polymer containing coating comprises a (co)polymer derived from polymerization of one or more vinylic monomers comprising a carboxyl or carboxylate group.

Abstract: Method of inhibiting a protein-protein interaction between Von Hippel-Lindau tumor-suppressor protein and hypoxia-inducible factor 1-alpha useful in the treatment of angiogenesis-related diseases and promoting wound healing.

Abstract: Some aspects relate to techniques for calibrating a logging tool. In some implementations, the logging tool may estimate certain unknown properties of a signal based on distances between transmitters and receivers of the logging tool and based on frequencies used by the transmitters and receivers. The logging tool may estimate the unknown properties by interpolating values into a mathematical function related to the above-noted distances and frequencies. After estimating the unknown properties, the logging tool may be deployed into the wellbore, where it may use the estimated properties to process signals received through a subsurface formation.

Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of processing video data includes determining, for a conversion between a video block of a video and a bitstream of the video, a gradient of a prediction vector at a sub-block level for the video block according to a rule, wherein the rule specifies to use a same gradient value is assigned for all samples within a sub-block of the video block; and performing the conversion based on the determining.

Abstract: A device includes a voltage regulator circuit configured to pull up a voltage at an output terminal to equal to half of a supply voltage; multiple first transistors coupled between the output terminal and a voltage terminal providing the supply voltage; and a control circuit configured to pull down gate voltages of the first transistors from the supply voltage to a voltage level between the supply voltage and a ground voltage at a first time. The first transistors are configured to pull up the voltage at the output terminal to the supply voltage at a second time.

Abstract: The present disclosure provides a direct current (DC) transformer error detection apparatus for a pulsating harmonic signal, including a DC and pulsating harmonic current output module and an external detected input module, where the DC and pulsating harmonic current output module outputs a DC and a DC superimposed pulsating harmonic current to an internal sampling circuit and a self-calibrated standard resistor array; and the internal sampling circuit converts the input DC and the input DC superimposed pulsating harmonic current into a voltage signal, and sends the voltage signal to an analog-to-digital (AD) sampling and measurement component through a front-end conditioning circuit and a detected input channel. The DC transformer error detection apparatus can complete self-calibration for measurement of the DC and the pulsating harmonic signal on a test site.

Abstract: Systems and methods of the present disclosure relate to calibration of resistivity logging tool. A method to calibrate a resistivity logging tool comprises disposing the resistivity logging tool into a formation; acquiring a signal at each logging point with the resistivity logging tool; assuming a formation model for a first set of continuous logging points in the formation; inverting all of the signals for unknown model parameters of the formation model, wherein the formation model is the same for all of the continuous logging points in the first set; assigning at least one calibration coefficient to each type of signal, wherein the calibration coefficients are the same for the first set; and building an unknown vector that includes the unknown model parameters and the calibration coefficients, to calibrate the resistivity logging tool.

Abstract: The present application discloses a communication method, a terminal, a server, a communication system, a computer device and a medium. The communication method includes that a server establishes a connection and feeds back a display control in response to requests of a first terminal and a second terminal; then, the server feeds back function feedback information in response to a function request of the first terminal, and feeds back function feedback information in response to a menu request of the second terminal; and the servers presents multiple interface components and maintains and updates each interface component in response to management operation of a third user.

Abstract: Embodiments of the present disclosure relate to a method, system, and computer program product for dynamic update of a computer program in memory. According to the method, one or more processors obtain incremental information, the incremental information specifying an incremental update to at least one section of at least one target function in a computer program. One or more processors identify, based on the incremental information, the at least one target function to be updated from the computer program. One or more processors generate at least one updated copy of the at least one target function by updating the at least one section of the at least one target function based on the incremental information. One or more processors update the computer program based on the at least one updated copy of the at least one target function while the computer program is running.

Abstract: An electronic device may be provided with peripheral conductive housing structures, a first antenna, and a second antenna. A gap may divide the housing structures into a first segment forming an arm of the first antenna and a second segment forming an arm of the second antenna. A first feed terminal may be coupled to the first segment and a second feed terminal may be coupled to the second segment. Switchable components may be coupled in parallel between the first and second feed terminals across the gap. The switchable components may be adjusted to tune the frequency response of the first and/or second antenna. The switchable components may have a first state in which only the first feed terminal feeds the first antenna and may have a second state in which both the first and second feed terminals feed the first antenna.

Abstract: A system for refrigerant leakage detection includes one or more sensors configured to detect one or more parameters of a building system including a refrigerant. The system further includes one or more storage devices storing instructions thereon that, when executed by one or more processors, cause the one or more processors to receive sensor data from the one or more sensors; apply the sensor data to a long short-term memory (LSTM) model to generate predicted sensor data corresponding to the one or more sensors; receive subsequent sensor data from the one or more sensors; compare the predicted sensor data to the subsequent sensor data; determine that the building system has a refrigerant leakage based on the comparison of the predicted sensor data to the subsequent sensor data; and, responsive to determining that the building system has the refrigerant leakage, take an action to address the refrigerant leakage.

Abstract: A high-throughput microstructure characterization and reconstruction method of heterogeneous materials is provided. By extracting the features such as content, size and morphology of each constituent phase in the microscopic image of heterogeneous materials, and combining the principles of physical descriptor and texture synthesis method, the constituent phase with 10 microns scale, regular geometrical morphology and low content is characterized and reconstructed based on the physical descriptor, and the constituent phase with 100 microns scale, complex geometrical morphology and high content is characterized and reconstructed based on texture synthesis, and then the composition is adjusted to compensate for the overlapping pixels of each constituent phase to obtain batch reconstructed images.