Abstract: A method for purification of a styrene-containing feedstock includes steps of introducing the styrene-containing feedstock into the middle of an extractive distillation column, and a solvent for the extractive distillation into the upper part of the column; discharging a raffinate oil from the top of the column, and a rich solvent rich in styrene from the bottom of the column. The rich solvent is then introduced into the middle of the solvent recovery column for vacuum distillation to obtain a crude styrene from the top of the solvent recovery column, and a lean solvent is discharged from the bottom of the solvent recovery column and recycled to the upper part of the extractive distillation column. A portion of the rich solvent is sent to a solvent purification zone for a liquid-liquid extraction using water to obtain a mixture of a styrene polymer and styrene.

Abstract: A heat dissipation system for a high-speed train running in a low-vacuum tube is provided. Component groups that provide power and resistance for the movement and stop of a train are provided at a periphery, close to the train, in a low-vacuum tube. The component group is provided with a group A cooling assembly. The group A cooling assembly includes a group A cooling-type heat exchanger and/or a group A nozzle assembly attached to the back of the component group. Since the friction between the train running at high speed and the air in the low-vacuum tube and the operation of the key equipment in the low-vacuum tube will generate a lot of heat, the group A cooling assembly in the component group in the low-vacuum tube exchanges the heat with the air in the low-vacuum tube.

Abstract: The present application relates to the field of display technologies, and provides a display panel including a base substrate; a plurality of pixel structures arranged in an array on the base substrate including a main light-emitting portion and an auxiliary light-emitting portion independently driven and having a same light-emitting color, as well as a microstructure covering the main light-emitting portion and the auxiliary light-emitting portion, light emitted by the main light-emitting portion and the auxiliary light-emitting portion of the same organic light-emitting sub-pixel is emitted through the microstructure; and wherein the initial brightness of the organic light-emitting sub-pixel is the initial brightness of the main light-emitting portion; and a control structure configured to control brightness of the auxiliary light-emitting portion according to brightness of the main light-emitting portion to compensate the brightness of the main light-emitting portion, so that brightness of the organic ligh

Abstract: In an approach, a processor extracts an audio signal from a video clip. A processor converts the audio signal into a text sequence. A processor selects a first set of keywords from the text sequence, the first set of keywords corresponding to a first audio segment of the audio signal. A processor tags a target video segment of the video clip with the first set of keywords, the target video segment corresponding to the first audio segment.

Abstract: In exemplary embodiments, methods, systems, and vehicles are provided that include: one or more sensors that are configured to at least facilitate obtaining sensor data with one or more indications pertaining to a target vehicle that is travelling ahead of the vehicle along a roadway; and a processor that is coupled to the one or more sensors and that is configured to at least facilitate: determining an initial estimated value of acceleration for the target vehicle, based on the one or more indications pertaining to the target vehicle; and controlling a vehicle action for the vehicle based at least in part on the initial estimated value of the acceleration based on the one or more indications pertaining to the target vehicle.

Abstract: The present disclosure provides compositions comprising artemisinin-derived trimers and tetramers; methods of preparing these compositions; and methods for their use as medicaments.

Abstract: A system, a method and a device for developing a smart contract are provided. A particular embodiment of the system comprises a specification acquisition module configured to acquire specification of a target smart contract interface, a client development module configured to generate, on the basis of the specification of the target smart contract interface, a smart contract client side interface and a smart contract client side agent, the smart contract client side interface and the smart contract client side agent being used to construct a client smart contract application, and a server development module configured to generate, on the basis of the interface specification of the target smart contract, a smart contract server interface and a smart contract server skeleton, the smart contract server interface and the smart contract server skeleton being used to construct a server smart contract.

Abstract: The present disclosure provides a corn position of artesunate, a process of preparing the same, and a method of treatment.

Abstract: A device control system, method, and apparatus are provided. The system includes a control device and at least two battle game devices. The control device is configured to: establish a connection to a first battle game device, and send a control instruction to the first battle game device during a battle game according to a received external control operation. The first battle game device is configured to battle according to the control instruction. The second battle game device is configured to: obtain a relative position of the first battle game device during the battle game, and automatically battle according to the relative position.

Abstract: A system is described for scaling display content on a computing device based on user-to-device distance. A measurement is taken of the distance between the user and the device and a scaling setting is determined using a predefined rule based on the measured distance. The scaling setting is applied to scale content on the display based on the user-to-device distance by changing settings in the operating system or changing scaling in an application. Embodiments include virtual desktop/application and localized implementations.

Abstract: A computer-implemented method for generating video representations utilizing a hierarchical video encoder includes obtaining a video, wherein the video includes a plurality of frames, processing each of the plurality of frames with a machine-learned frame-level encoder model to respectively generate a plurality of frame representations for the plurality of frames, the plurality of frame representations respective to the plurality of frames determining a plurality of segment representations representative of a plurality of video segments including one or more of the plurality of frames, the plurality of segment representations based at least in part on the plurality of frame representations, processing the plurality of segment representations with a machine-learned segment-level encoder model to generate a plurality of contextualized segment representations, determining a video representation based at least in part on the plurality of contextualized segment representations, and providing the video representati

Abstract: An approach to optimize performance for large scale inference models. Data in the form of images is received from sensors such as cameras. The data is processed to generate data tags associated with the context of the image and portion the images. Model tags are generated based on data characteristics or user input. The tags and their associated data are added to a time-based queue for delivery to the appropriate inference models. Based on the embedded delivery time and frequency, the portioned images are delivered to the appropriate inference models.

Abstract: The present disclosure provides compositions comprising artemisinin-derived trimers and tetramers; methods of preparing these compositions; and methods for their use as medicaments.

Abstract: Techniques for multistage process model training are described herein. Another aspect includes determining a first gray level histogram corresponding to a first input image. Another aspect includes determining a second gray level histogram corresponding to a second input image. Another aspect includes determining a set of change values, each change value corresponding to a change in a respective gray level from the first gray level histogram to the second gray level histogram. Another aspect includes comparing each change value of the set of change values to a threshold. Another aspect includes, based on determining that a first change value of the set of change values is higher than the threshold, adding a first gray level corresponding to the first change value to a hot zone of the second input image. Another aspect includes training a model using the hot zone of the second input image.

Abstract: A method for generating electric substation load transfer control parameters includes adjusting elements in a fundamental scale matrix according to a condition change of a power grid, wherein the fundamental scale matrix is constructed based on the topology structure of the power grid, and the elements in the fundamental scale matrix represent switch information and risk values of paths between nodes of the power grid, wherein the switch information represents number of switching times required for connecting two nodes of the power grid; and performing operations on the adjusted fundamental scale matrix to generate switch information and risk values of paths for electric substation load transfer control, as electric substation load transfer control parameters.

Abstract: A steel cord containing a core layer and an sheath layer, the core layer containing a plurality of core wires with a number of n and the sheath layer comprises a plurality of sheath wires with a number of m, and the steel cord has a flat cross-section with a major axis and a minor axis, the flat cross-section has a flat ratio being the ratio of the length of the major axis and the length of the minor axis, the flat ratio is more than 1.2, the steel cord has a breaking load being BLcord, the core wires and the sheath wires have a sum breaking load being Sum BLwires when the core wires and the sheath wires are un-twisted from the steel cord, BLcord and Sum BLwires satisfies the following formula: BLcord/Sum BLwires>96%. The steel cord has higher breaking load.

Abstract: The disclosed technology relates generally to the field of semiconductor devices, and more particularly to co-integration of GaN-based devices with Si-based devices. In one aspect, a method of forming a semiconductor device includes forming a first wafer including, on a front side thereof, a III-V semiconductor layer stack formed on a first substrate and a first bonding layer. The III-V semiconductor layer stack includes a GaN-based device layer structure formed on the first substrate. The method additionally includes, subsequent to forming the first wafer, bonding the first bonding layer to a second bonding layer of a second wafer. The second wafer includes a second silicon substrate supporting an active device layer, a back-end-of-line interconnect structure and the second bonding layer. The method further comprises, subsequent to bonding, thinning the first wafer from a backside, wherein thinning includes removing at least the first substrate.

Abstract: An electronic device is provided. The electronic device includes a device body including a plurality of sensor components arranged in a longitudinal line along a first direction; a flexible panel including a display region and a light transmitting region connected with the display region; and a drive mechanism configured to drive the flexible panel to move along a second direction.

Abstract: The disclosure provides a modified chitosan, a preparation method thereof, and an additive for a tile adhesive, and belongs to the technical field of building additives. In the disclosure, chitosan, an inorganic base, a dispersant having a hydroxyl group and an etherifying agent are added at one time, avoiding the tedious operation of adding inorganic alkali or etherifying agent multiple times. In addition, the etherification reaction is continuously performed under the conditions of gradual temperature increase and pressure increase.