Abstract: A method and a smart gas Internet of Things system for management based on gas safety are provided. The method may comprise obtaining gas-related features of at least one area; determining alert vectors of the at least one area based on the gas-related features by manners for feature extraction; determining a count of on-call maintenance personnel in the at least one area based on the alert vectors; determining whether the count of on-call maintenance personnel meets a preset threshold; and in response to a determination that there is at least one area where the count of on-call maintenance personnel meets the preset threshold, performing, based on an area map, multiple rounds of iterative update on a scheduling capability value of the at least one area that meets the preset threshold; and determining a real-time scheduling policy based on the updated scheduling capability value.

Abstract: A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.

Abstract: The embodiments of the present disclosure provide methods for controlling natural gas efficiency enhancement of smart gas, smart gas Internet of Things (IoT) systems and mediums. The method may comprise obtaining at least one user need through a smart gas user platform based on a smart gas service platform, the user need including a gas usage target need; determining at least one optimization objective based on the at least one user need; determining a target proportioning feature of a synergist according to the at least one optimization objective, the target proportioning feature including a proportioning vector and an addition proportion of the synergist; and configuring a target synergist that satisfies the target proportioning feature to enhance efficiency of natural gas by sending the target proportioning feature to a smart gas object platform through a smart gas sensor network platform.

Abstract: A power device includes a substrate, a drift layer disposed on the substrate, a terminal region and an active region disposed in the drift layer, an electrode layer disposed on the active region, a Schottky contact layer disposed between the electrode layer and the active region, a passivation layer disposed on the drift layer, and an isolation layer disposed between the passivation layer and the electrode layer so that the passivation layer and the electrode layer are at least partially separated from each other. The isolation layer, the electrode layer, and the passivation layer each respectively has a thermal expansion coefficient a, b, c, and a>b>c.

Abstract: Disclosed is a low-expansion borosilicate transparent glaze, a preparation method thereof, and use thereof in preparation of a glaze product by secondary fusion-cast molding. The low-expansion borosilicate transparent glaze has raw material composition by mass percentage including: 72%-80% of SiO2, 4%-12% of B2O3, 4%-12% of Na2O, 0.1%-4% of CaO, 0.1%-6% of Al2O3, 0-0.05% of Fe2O3, 0-2% of MgO, 0-2% of K2O, 0-2% of ZnO, 0-2% of BaO, 0-2% of ZrO2, 0-0.5% of Li2O, and 0-0.5% of TiO2, wherein a sum of mass percentages of SiO2, B2O3 and Al2O3 is 85%-95%. The preparation method includes steps of: (1) after mixing dried raw materials, melting at 1400-1540° C. to obtain a high-temperature glass melt; (2) cooling the high-temperature glass melt to 1150-1230° C. to mold; and (3) annealing a molded glass at 530-600° C. to obtain the low-expansion borosilicate transparent glaze.

Abstract: A preparation method of a rare earth permanent magnetic material comprises one or more times of cryogenic treatment and tempering treatment. When the preparation method comprises one time of cryogenic treatment and tempering treatment, the cryogenic treatment is performed between sintering treatment and the tempering treatment, or is performed after the tempering treatment. When the preparation method comprises two or more times of cryogenic treatment and tempering treatment, at least one time of cryogenic treatment is performed between sintering treatment and the tempering treatment, and at least one time of cryogenic treatment is performed after the tempering treatment. The preparation method can refine and homogenize the structure and realize quick and convenient treatment, and can effectively improve the mechanical performance of the rare earth permanent magnetic material and maintain good magnetic performance.

Abstract: The present application relates to the field of electronic product heat dissipation component and in particular, relates to a graphene thermally conductive gasket edge-wrapped process and an edge-wrapped graphene thermally conductive gasket. The process steps are: coating a layer of adhesive on the first layer of graphene film, placing the second layer of graphene film on the first layer of graphene film, repeating stacking to the target height, obtaining a graphene film block, punching a plurality of through holes penetrating two surfaces of the graphene film block; threading the carbon fiber through the through holes after coating an adhesive on the surface thereof; slicing along the direction parallel to the thickness direction of the graphene film, to obtain the graphene thermally conductive gasket with a specified thickness; and coating a layer of glue on the peripheral sides of the graphene thermally conductive gasket to form an edge-wrapped layer.

Abstract: A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.

Abstract: The present disclosure provides a coordinated and optimized dispatching method for electric buses and belongs to the technical field of smart buses. The present disclosure allows for comprehensive optimization of an electric bus dispatching strategy in time and space dimensions, establishment of a bi-level programming model for bus dispatching with consideration of a bus capacity, a transfer problem, and characteristics of electric buses, and solving of the model by a genetic algorithm. The present disclosure enables generation of a dispatching strategy for electric buses encompassing time and space aspects. The dispatching strategy is closer to an actual passenger flow situation and has better actual benefits.

Abstract: The present disclosure discloses a tennis ball-picking robot, including a chassis assembly, a ball-entering control element group, and a ball-collecting mechanism, the ball-entering control element group being disposed on a front end of the chassis assembly and the ball-collecting mechanism being disposed on a rear side of the chassis assembly. The tennis ball-picking robot incorporates multiple AI technologies such as computer vision, simultaneous localization and mapping, and robotics kinematics, enabling intelligent following, mapping and localization, and path planning. The robot can efficiently collect the tennis balls dropped on the court, and the players can also select a ball-picking area and a ball-picking speed pattern of the robot through an APP, improving the ball-picking efficiency, avoiding consuming the physical power of the players due to manual picking, improving the training effect by ultimately ensuring their focus during training, and reducing the training cost.

Abstract: The present invention belongs to the technical field of preparation of light metal alloy materials, in particular to a method for producing a magnesium-lithium alloy by a gaseous co-condensation method. The method comprises the steps of: 1) mixing and briquetting a lithium salt, a refractory agent and a catalyst under pressure, and then thermally decomposing to form an unsaturated composite oxide; 2) respectively crushing and ball-milling, and then briquetting the unsaturated composite oxide, magnesium oxide, a reducing agent and a fluxing agent; 3) reducing briquettes in vacuum; 4) making a gas pass through a first condensing chamber of a temperature control device, and then purifying; 5) The purified metal gas is condensed into the condensing phase of the alloy through the second condensing chamber of a quenching device; 6) obtaining the magnesium-lithium alloy with a purity being 99.5% or above by virtue of smelting and flux-refining, and then purifying by distillation.

Abstract: The embodiment of the present disclosure provides a method for setting time of traffic lights in a smart city and an Internet of Things system. The method is implemented by an Internet of Things system for setting time of traffic lights in a smart city, which includes a user platform, a service platform, a management platform, a sensor network platform, and an object platform. The method includes: obtaining pedestrian information and intersection information of a target intersection, and the target intersection being an intersection provided with the traffic lights; determining, based on the pedestrian information and the intersection information, the scheme for setting time of the traffic lights at the target intersection; and sending a control instruction corresponding to the scheme for setting the time to the object platform, and in response to the received control instruction, controlling lighting duration of the traffic lights by the object platform.

Abstract: Disclosed is a method for predicting demand for maintenance materials of a smart gas pipeline network. The method comprises: obtaining a pipeline network feature of a gas pipeline network; predicting fault probabilities of one or more point positions of the gas pipeline network based on the pipeline network feature, the fault probabilities including probabilities of one or more preset fault types of faults occurring at the point positions; determining sub-demand for the maintenance materials of each point position based on the fault probability of each point position of the one or more point positions, the sub-demand being obtained based on historical maintenance data of the gas pipeline network; determining the demand for the maintenance materials based on the sub-demand of each point position of the gas pipeline network; and transmitting the demand for the maintenance materials to the smart gas user platform based on the smart gas service platform.

Abstract: Embodiments of the present disclosure generally relate to methods and apparatus for backside stress engineering of substrates to combat film stresses and bowing issues. In one embodiment, a method of depositing a film layer on a backside of a substrate is provided. The method includes flipping a substrate at a factory interface so that the backside of the substrate is facing up, and transferring the flipped substrate from the factory interface to a physical vapor deposition chamber to deposit a film layer on the backside of the substrate. In another embodiment, an apparatus for depositing a backside film layer on a backside of a substrate, which includes a substrate supporting surface configured to support the substrate at or near the periphery of the substrate supporting surface without contacting an active region on a front side of the substrate.

Abstract: A lock and a method and a system for controlling the lock are provided. The lock includes an operation part, an action part, and a bolt. The action part is configured to drive the bolt to move. The operation part and the action part are connected to each other via a transmission connection. The transmission connection is blockable.

Abstract: Methods of forming devices comprise forming a dielectric material on a substrate, the dielectric layer comprising at least one feature defining a gap including sidewalls and a bottom. The methods include passivating a metal material at a bottom of the gap with an alkyl reactant to form a passivation layer on the metal material, the gap defined by the bottom and sidewalls comprising the dielectric material with having a barrier layer thereon. A metal liner is selectively deposited on the barrier layer on the sidewall over the passivation layer on the bottom.

Abstract: Methods of forming microelectronic devices comprise forming a dielectric layer on a substrate, the dielectric layer comprising at least one feature defining a gap including sidewalls and a bottom. The methods include forming a hardmask on the dielectric layer; selectively depositing a self-assembled monolayer (SAM) on the bottom of the gap and on the hardmask; treating the microelectronic device with a plasma to remove the self-assembled monolayer (SAM) from the hardmask; forming a barrier layer on the dielectric layer and on the hardmask; selectively depositing a metal liner on the barrier layer on the sidewall; and performing a gap fill process on the metal liner.

Abstract: Disclosed is a method for guaranteeing a smart gas demand based on a regulatory Internet of Things (IoT). The method is executed by a gas company management platform. The method includes: obtaining a plurality of grid regions by gridding a regulatory scope; predicting a gas demand degree of each of the plurality of grid regions in a future time period based on weather data, people flow data, historical gas data, and a gas consumption plan, and an authenticity degree of the gas consumption plan; determining a scheduling parameter based on the gas demand degree and schedulable resource data in the future time period; and generating a scheduling instruction based on the scheduling parameter, and sending the scheduling instruction to a terminal device corresponding to a schedulable resource device.

Abstract: The present invention discloses a 1,4-sulfur-bridged polycyclic compound containing dihydrobenzofuran structure which has a structural formula (I). A preparation method is also disclosed which includes the steps of: dissolving 2-nitrobenzofuran (II) and 5H-thiazolone (III) in an organic solvent; then adding molecular sieve and chiral catalyst, stirring and allowing reaction at room temperature under argon protection until the reaction is completed; and carrying out separation and purification to obtain a 1,4-sulfur-bridged polycyclic compound (I) containing dihydrobenzofuran structure. The polycyclic compounds of the present invention have a substructure of dihydrobenzofuran and 1,4-thiopiperidinone. The application of the compound for the preparation of antitumor drugs is also disclosed, which has a good potential value in antitumor drug research. The preparation method has the advantages of novelty, simplicity, simple operation, mild reaction conditions, high yield and high stereoselectivity, and etc.

Abstract: One example of a flexible battery includes an electrochemical cell layer and a wrapping layer that wraps the electrochemical cell layer. The flexible battery further includes an energy absorbing layer. The energy absorbing layer is located between the wrapping layer and upper and lower surfaces, which are opposite to each other, of the electrochemical cell layer. The energy absorbing layer includes a plurality of supporting parts that protrude outward from the upper or lower surface of the electrochemical cell layer. The plurality of supporting parts are mainly made of a foam material or rubber. For the energy absorbing layer, a lower-modulus buffering layer or an empty part may be further disposed between the electrochemical cell layer and the wrapping layer, to complement a wavy surface of the supporting part to form a flat surface, so as to meet diversified requirements of a wearable device.