Abstract: Provided are an interaction method and apparatus in a live streaming room, a device, and a storage medium. The method comprises: in response to a trigger operation for a preset drawing entry on a live streaming room page, jumping to a graphic drawing page from the live streaming room page, a drawing trajectory set for a preset object being displayed on the graphical drawing page; when a drawing stroke on the graphic drawing page is received, matching the drawing stroke with the drawing trajectory; and if it is determined that the drawing stroke is successfully matched with the drawing trajectory, displaying prompt information about successful participation in a preset activity, the preset activity and the preset drawing entry having a correspondence.

Abstract: An artificial chordae system can comprise a surgical pad configured to be externally positioned over an opening formed in a portion of a heart wall adjacent to a heart ventricle, and a tether comprising a cord and a tissue ingrowth promoting coating over at least a portion of the cord, the tether comprising a distal portion being configured to couple a heart valve leaflet and a proximal portion being coupled to the surgical pad. The tether can be dimensioned to extend from the heart valve leaflet through the heart ventricle to the opening in the heart wall, and through the opening in the heart wall to the surgical pad. The tissue ingrowth promoting coating can comprise a protein and be configured to promote native tissue growth over the cord to provide regenerated native tissue over the tether for coupling the heart valve leaflet to the heart wall.

Abstract: The present application discloses a ceiling-mount air disinfector, i.e., an air disinfection troffer, including: a housing; a first air outlet and a first air inlet respectively near two opposing ends of a side of the housing; a filter covering the first air inlet; a cross flow fan located near the first air outlet, and an air disinfection apparatus disposed in the housing including an ultraviolet disinfection mechanism and an air rectifying chamber, said air rectifying chamber including a plurality of air ducts configured in parallel. In operation, ultraviolet light and air flow are introduced into the air ducts, traveling toward each other along a long side of the air ducts so that maximized air-light interaction time is achieved for the best disinfection efficacy.

Abstract: The disclosure relates to a method, apparatus, readable medium, and electronic device for live stream interaction. The method includes: in accordance with displaying of a first control at a first target position of a live stream interface, obtaining a first duration during which a user watches the live stream interface; in accordance with a determination that the first duration is greater than or equal to a first predetermined duration threshold, switching the first control to a second control, and displaying the second control at a second target position of the live stream interface; and in response to a first operation command performed by the user on the second control, allocating a virtual resource to the user. In this way, interaction modes of a live stream room are enriched, and an activity level of the live stream room can be improved.

Abstract: A multi-tag concurrent identification method and a system for a query tree based on feature groups are provided in this disclosure. In the disclosure, a whole data string space is divided into a plurality of disjoint subsets according to features of data strings returned by tags, where each of the subsets contains several different data strings, each of the data strings in the each of the subsets is regarded as a complete tag ID or a partial ID, and the each of the subsets corresponds to a unique query prefix, a length of the prefix is fixed and does not dynamically increase with an actual location of a collision, and when multiple data strings from a same subset return at a same time, a reader is capable of identifying them at a same time in a slot.

Abstract: Provided are a preparation method for a CTL cell and an application thereof. The preparation method comprises the following steps of: inducing a CTL cell by using a tumor antigen PAP-GM-CSF sensitized DC cell; and knocking out a PD-1 gene of the CTL cell to obtain a PD-1 knock-out CTL cell. The CTL cell obtained by the preparation method can be used for preparing drugs for treatment of prostate cancer, especially for treating PAP-positive prostate cancer. The CTL cell does not cause CTL cell failure and anergy due to the tumor-expressed PD-L1 after being transfused into the body, thereby producing efficient specific cytotoxic effect on a tumor cell and improving the curative effect and reducing the side effect.

Abstract: An apparatus has a current spreading base with an n-contact. The current spreading base has a small n-type resistivity to promote lateral electron flow. A current spreading cap is on top of the current spreading base. The current spreading cap has a large n-type resistivity to suppress vertical electron flow and promote lateral electron flow. An active region is on top of the current spreading cap. A p-type structure is on top of the active region with a p-contact. Sheet resistance of the current spreading base is experimentally established, the half width xF of a mesa is selected and the current spreading cap thickness hc is selected to collectively promote uniform current injection into the active region.

Abstract: The invention provides 3D-knitted spacer fabrics of high breathability and moisture management and methods of making the 3D-knitted spacer fabrics. The middle layer of the fabric is made of hydrophilic material, comprising two yarns, a blended thermo-fuse wicking yarn comprising hydrophilic fiber and thermo-fuse fiber, and a non-supportive hydrophilic functional wicking yarn. The top layer of the fabric comprises a hydrophilic yarn, and the third layer of the fabric comprises a hydrophobic yarn. The 3D-knitted spacer fabrics are useful in clothing and equipment for wear in high temperature environments.

Abstract: A substrate structure includes an AlN template layer formed on a substrate. Depressions sealed by the AlN template layer are formed on a surface of the substrate at an interface between the substrate and the AlN template layer, the sealed depressions contain discrete depressions and depression networks and have a lateral size in the range of 20-100 nm, a vertical dimension in the range of 20-100 nm, and a density in the range of 1.0×109-2.0×1010 cm?2. The substrate structure is used for light-emitting diodes with improved optical output power efficiency.

Abstract: The process converts ethylene in a dilute ethylene (dry gas) stream that may be derived from an FCC product to propylene. The process includes an oligomerization step to convert ethylene in the dilute ethylene stream to heavier olefins, and a second reaction step to convert the heavier olefins to propylene. The oligomerization catalyst may be an amorphous silica-alumina base with a Group VIII and/or VIB metal. The catalyst is resistant to feed impurities such as hydrogen sulfide, carbon oxides, hydrogen and ammonia. At least 50 wt-% of the ethylene in the dilute ethylene stream can be converted to C4+ olefins and recycled to the FCC for cracking to propylene.

Abstract: Disclosed are a Nested Named Entity Recognition method based on part-of-speech awareness, system, device and storage medium therefor. The method uses a BiLSTM model to extract a feature of text word data in order to obtain a text word depth feature, and each text word of text to be recognized is initialized into a corresponding graph node, and a text heterogeneous graph of the text to be recognized is constructed according to a preset part-of-speech path, the text word data of the graph nodes is updated by an attention mechanism, and the features of all graph nodes of the text heterogeneous graph are extracted using the BiLSTM model, and a nested named entity recognition result is obtained after decoding and annotating. The present disclosure can recognize ordinary entities and nested entities accurately and effectively, and enhance the performance and advantages of the nested named entity recognition model.

Abstract: A display substrate and a display device are provided. Sub-pixels in the display substrate include a first electrode, a light emitting layer and a second electrode which are sequentially stacked; each second electrode includes a main body electrode and a connecting electrode. The sub-pixels include first color sub-pixels and second color sub-pixels, the main body electrode of a same first color sub-pixel is a continuous electrode. The sub-pixels include sub-pixel pairs, each sub-pixel pair includes a first pixel block and a second pixel block, a shape of the second electrode of the second pixel block is different from that of the second electrode of the first pixel block.

Abstract: Disclosed is a prosthetic heart valve, wherein the prosthetic heart valve comprises: a ring-shaped stent, comprising: a mesh structure which allows the stent to be contracted or expanded in a radial direction; and a leaflet structure, comprising a plurality of leaflets, each leaflet is attached to the stent and has a first portion disposed within the stent and a second portion being wrapped to an outer circumferential side of the proximal end of the stent. With a growth of the heart, the stent can be expanded after the prosthetic heart valve is anchored, to allow the prosthetic heart valve to operate in different states, and under at least one of the different states, each leaflet has an excessive portion freely sagging to a position away from the stent along a direction from the distal end to the proximal end, to allow the stent to form a more functional valve.

Abstract: An UV or DUV light-emitting diode package includes: a foundation; a first metal layer, a second metal layer, and third metal layer formed on a top surface of the foundation, wherein the first metal layer and the second metal layer are electrically isolated by a first gap, the third metal layer surrounds the first and second metal layers and is electrically isolated from the first and second metal layers by a second gap; a lens attached to the top surface of the foundation, wherein a cavity is formed between the foundation and the lens; a chip disposed in the cavity, wherein an anode of the chip is electrically connected to the first metal layer and a cathode of the chip is electrically connected to the second metal layer; and a fluid encapsulate, wherein the cavity is fully or partially filled with the fluid encapsulate.

Abstract: A reasonable millisecond time control method for excavation blasting of a tunnel is provided, and includes: acquiring physical mechanical parameters to establish a millisecond blasting model, and designing four dimensions blasting parameters of explosive quantity, hole number, inter-hole millisecond and inter-row millisecond; simulating, based on the millisecond blasting model, a blasting process of an explosive package using blasting parameters to obtain a blasting vibration curve; obtaining single-hole blasting vibration waveforms, solving a vibration synthesis curve through a vibration synthesis theory; comparing the vibration synthesis curve with the blasting vibration curve to obtain a coupling relationship of blasting parameters; determining a target group of explosive quantity and hole numbers, determining a target millisecond through the coupling relationship of blasting parameters, and relating a millisecond blasting control strategy to control, and it is used for tunneling project to reduce cut blas

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may perform a physical layer measurement on a non-serving cell of the UE. The UE may report a measurement value of the physical layer measurement to a serving cell of the UE based at least in part on the physical layer measurement satisfying a threshold. The UE may receive, based at least in part on reporting the physical layer measurement, a physical layer reference signal measurement configuration for the non-serving cell. The UE may transmit a measurement report based at least in part on the physical layer reference signal measurement configuration. Numerous other aspects are provided.

Abstract: An impeller wake vortex dissipation device under stall condition of a mixed flow pump includes a guide vane and a wake vortex dissipation device. The pump is evenly divided into n guide vane channels by N evenly distributed guide vanes. A wake vortex dissipation device is set in each guide vane channel, and one end of the wake vortex dissipation device is fixedly connected to the inner wall of the pump body. Therefore, each wake vortex dissipation device is located in the middle and upper part of the guide vane channel and does not occupy the lower guide vane channel; the wake vortex dissipation device is provided with a dissipative hole pair, which are used to dissipate the energy of the wake vortex of the impeller.