Abstract: An apparatus and method for preparing high-purity spherical magnesium and/or high-purity magnesium powder are provided. The apparatus includes a vertical furnace body, a heating zone, and a condensing zone, where a periphery of the condensing zone is provided with a first thermal insulation device and a second thermal insulation device sequentially from bottom to top, and each of the first thermal insulation device and the second thermal insulation device is removably arranged; the periphery of the condensing zone is further provided with a liquid cooling device; a gas inlet and a gas outlet are formed in the condensing zone; and an inner wall of the condensing zone is provided with an arrangement structure configured to arrange a collection device. A heating temperature of a material and condensation conditions in the condensing zone are controlled to make an evaporated magnesium vapor condensed on the collection device in the condensing zone.

Abstract: A central tube assembly for a battery, a battery, and a manufacturing method of a central tube assembly for a battery is provided. The central tube assembly for a battery comprises: a central tube and at least one battery center pin; the battery center pins are provided on the outer periphery of the central tube, each battery center pin is sleeved on the central tube to form the central tube assembly, and the battery center pins are electrically insulated from the central tube. The central tube assembly for a battery of the present disclosure overcomes the situation in the related art that the central tube is separated from the battery center pins, reduces a welding process during battery manufacturing, and greatly enhances the sealing performance of the battery.

Abstract: A method for preparing a tumor-derived microparticle by a microwave includes the following steps: step 1, Lewis lung carcinoma (LLC) of a lung adenocarcinoma cell line is taken and then the LCC is cultured in a culture dish for more than 24 hours (h) to obtain cultured cells; step 2, microwave heating treatment is performed on the cultured cells obtained in step 1 to obtain treated cells; step 3, the treated cells obtained in step 2 are placed into a constant temperature incubator for cultivation for 24 h; and step 4, a supernatant of cells is collected from the culture dish cultured in step 3, and multiple centrifugation treatments is performed on the supernatant by using a density gradient centrifugation method to obtain a precipitate which is the tumor-derived microparticle TMPMW.

Abstract: A mechanism for processing video data implemented by a video coding apparatus is disclosed. The mechanism determines to apply a prediction splitting tree to a prediction tree unit (PTU). The prediction splitting tree includes a leaf prediction unit (PU). A prediction mode is selected for the leaf PU based on whether the leaf PU is split from the PTU. The method performs a conversion between a visual media data and a bitstream based on the leaf PU.

Abstract: A power decentralized electric locomotive apparatus includes an electric locomotive and a plurality of muck trucks. The electric locomotive and the plurality of muck trucks are connected in sequence, and a mater drive motor is fixedly mounted on the electric locomotive. A slave drive motor is fixedly mounted on at least one of the muck trucks; a torque of the slave drive motor is smaller than a torque of the mater drive motor; and the slave drive motor cooperates with the mater drive motor, to enable the muck truck to travel on rails and reduce drive power and self-weight of the electric locomotive.

Abstract: A mechanism for processing video data implemented by a video coding apparatus is disclosed. The mechanism determines to split a coding tree unit (CTU) into one or more coding units (CUs). One or more of the CUs may be one or more prediction tree units (PTUs). The mechanism further determines to recursively split the CUs into prediction units (PUs). The method performs a conversion between a visual media data and a bitstream based on the PUs.

Abstract: Embodiments of the present disclosure provide a method for video processing. The method comprises: determining, during a conversion between a current video block of a video and a bitstream of the video, at least one target intra prediction mode for the current video block based on neighboring reconstructed samples of the current video block; determining a prediction or a reconstruction of the current video block based on a combination of the at least one target intra prediction mode and one of an inter coding tool or a candidate coding tool, the candidate coding tool being used for determining a reference block for the current video block with samples in a current picture associated with the current video block; and performing the conversion based on the prediction or the reconstruction of the current video. Compare with conventional solutions, the proposed method can advantageously improve coding efficiency and coding quality.

Abstract: A quantitative evaluation method for integrity and damage evolution of a cement sheath in an oil-gas well is provided based on a fractal theory, an image processing technology, structural features and failure mechanisms of a casing-cement sheath-formation combination. The method uses correlations among fractal dimensions of casing-cement sheath interface morphology, cement sheath microscopic pore morphology, particle morphology of an initial blank group, and macroscopic mechanical properties including a radial cementing strength of the cement sheath interface, a tensile strength, and a compressive strength to quantitatively evaluate the integrity of the cement sheath of the blank group.

Abstract: A sweep voltage generator and a display panel are provided. The sweep voltage generator includes an output node, a current generating block and a voltage regulating block. The output node is used to provide a sweep signal. The current generating block is coupled to the output node, includes a detection path for detecting an output load variation on the output node, and adjusts the sweep signal provided by the output node based on the output load variation. The voltage regulating block is coupled to the output node for regulating a voltage of the output node.

Abstract: The present disclosure discloses a medical material and a product and preparation method thereof. The medical material comprises a ferroelectric polymer, and optionally further comprises an inorganic ferroelectric particle. The composite membrane is prepared by experiencing at least one of annealing treatment, corona poling treatment, acid treatment, and ultrasonic treatment, and the acid treatment is conducted after the annealing treatment. The present disclosure further relates to a method for treating a composite membrane to regulate an antibacterial activity.

Abstract: Provided is an apparatus for fabricating a flexible display screen. The apparatus for the flexible display screen includes a roller mechanism and a jig, wherein the jig includes a bearing surface configured to bear a flexible display panel, the bearing surface being a curved surface; and the roller mechanism includes a roller, an axis of the roller being parallel to an element line of the bearing surface, and the roller being configured to roll on the bearing surface along a directrix of the bearing surface.

Abstract: The disclosure relates to an omni-directional horizontally oriented deflecting tool for a coiled tubing, which includes an inner central pipe, an outer central pipe, a conical outer cylinder, a piston outer cylinder, an anchoring mechanism, a sealing mechanism, a reversing mechanism and a steering mechanism. The anchoring mechanism includes a cone, an O-shaped sealing ring I, a cone spring, a slip, a slip spring, a slip seat, a claw I and a pin shaft I, and the sealing mechanism includes a piston, an O-shaped sealing ring II, a claw II, a pin shaft II, an upper rubber cylinder seat, a rubber cylinder, a connecting cylinder, a lower rubber cylinder seat and a gasket.

Abstract: The present invention relates to a method for preparing, activating and regenerating a metal supported catalyst, comprising: treating a Ma-Mb-Mc metal supported catalyst at 10-700° C. by using an ammonia or nitrogen-containing organic matter, wherein the Ma metal is an active metal selected from one or more of a noble metal atom or a transition metal, the support is a common industrial porous catalyst, and the Ma metal is dispersed on the support in a state of single atomic site. According to the Md-Mb-Mc metal supported noble metal/zinc catalyst treated by the method of the present invention, the direct dehydrogenation conversion rate and selectivity of catalyzing light alkanes are remarkably improved; the method for preparing the catalyst is simple in process, the catalytic activity after regeneration is still kept, and the catalyst can be industrially produced on a large scale.

Abstract: Core-shell particles have a hydrophobic core and a shell formed of o containing hyperbranched polymers (HP). The HP can be covalently bound to the one or more materials that form the core or coated thereon. The HP coating can be modified to adjust the properties of the particles. For example, unmodified HP coatings resist non-specific protein absorption. Alternatively, the hydroxyl groups on the HP coating can be chemically modified to form functional groups that react with functional groups on tissue to adhere the particles to the tissue, cells, or extracellular materials, such as proteins. Such functional groups include, but not limited to, aldehydes, amines, and O-substituted oximes. Topical formulation for application to the skin contain these HP coated nanoparticles. In some embodiments, the particles include cosmetic, therapeutic, diagnostic, nutraceutical, and/or prophylactic agents, such as those used as sunblock compositions.

Abstract: The present invention relates to a preparation method for a noble metal single atom three-way catalyst, a catalyst obtained by using the method, and a use of the catalyst for purifying motor vehicle exhaust gas. In the present invention, a nitrogen-containing compound is used for treating a noble metal single atom catalyst precursor, avoiding the agglomeration of noble metal single atoms into nanocrystalline particles. The catalyst obtained by the preparation method of the present invention is resistant to high temperature, is not prone to agglomerate, and is resistant to poisoning, and the amount of usage of noble metals is reduced while the purification efficiency of the catalyst for motor vehicle exhaust gas is effectively improved.

Abstract: Methods, apparatus and systems for processing video are described. One example method includes performing a conversion between a video comprising a video unit and a bitstream of the video, wherein the bitstream conforms to a format rule, and wherein the format rule specifies that a first syntax element indicating whether an in-loop filtering operation is performed across tile boundaries is selectively included in the bitstream responsive to whether or how the video unit is partitioned into tiles.

Abstract: Core-shell particles and methods of making and using thereof are described herein. The core is formed of or contains one or more hydrophobic materials or more hydrophobic materials. The shell is formed of or contains hyperbranched polyglycerol (HPG). The HPG coating can be modified to adjust the properties of the particles. Unmodified HPG coatings impart stealth properties to the particles which resist non-specific protein absorption and increase circulation in the blood. The hydroxyl groups on the HPG coating can be chemically modified to form functional groups that react with functional groups and adhere the particles to tissue, cells, or extracellular materials, such as proteins.

Abstract: A sweep voltage generator and a display panel are provided. The sweep voltage generator includes an output node, a current generating block and a voltage regulating block. The output node is used to provide a sweep signal. The current generating block is coupled to the output node, includes a detection path for detecting an output load variation on the output node, and adjusts the sweep signal provided by the output node based on the output load variation. The voltage regulating block is coupled to the output node for regulating a voltage of the output node.

Abstract: This application discloses a viewing angle adjustment method and device, a storage medium, and an electronic device. The method may include: detecting, by a terminal by using a sensor in the terminal, that the terminal changes from a first position to a second position, the terminal displaying a first image in a virtual scene at a first viewing angle when the terminal is located at the first position, and the first image displaying an object targeting identifier; determining a second viewing angle according to the first position, the second position, the first viewing angle, a second variation quantity from the first viewing angle to the second viewing angle corresponding to a first variation quantity from the first position to the second position; and displaying, by the terminal, a second image in the virtual scene at the second viewing angle when the terminal is located at the second position, the second image also displaying the object targeting identifier.

Abstract: Systems and methods for content selection and presentation are disclosed. Training data including indicating one or more interactions with one or more content elements and associated with one of a plurality of individual contexts is received. A selection model is trained by applying a reinforcement learning mechanism and an individual explore-exploit mechanism. A context for a user is selected by applying the selection model, which is configured to determine an expected future reward value of at least one of the plurality of individual contexts, determine an expected future reward value of a global context based on a past click-through rate, a reward value, and a future click-through rate, and, select the global context or one of the one or more individual contexts based on a comparison of the expected future reward values.