Abstract: The present disclosure belongs to the technical field of heat exchangers, and provides a heat exchanger based on a Gyroid/Diamond (GD-type) hybrid minimal surface-based disturbance structure. The heat exchanger includes a core, headers, and flanges. The core includes a cold fluid channel and a hot fluid channel, the cold fluid channel and the hot fluid channel are separated by a parting sheet. An inlet and an outlet of the cold fluid channel are separated from an inlet and an outlet of the hot fluid channel by sealing bars. A GD-type hybrid minimal surface-based disturbance structure is inserted into the hot fluid channel. A cold fluid and a hot fluid are distributed in a cross-flow manner.

Abstract: A catheter system may include a catheter adapter, which may include a distal end, a proximal end, and a lumen extending through the distal end of the catheter adapter and the proximal end of the catheter adapter. The catheter system may include a catheter extending distally from the distal end of the catheter adapter. The catheter system may include a connector coupled to the catheter adapter and comprising a septum. The catheter system may include a blood collection adapter coupled to the connector. The blood collection adapter may be configured to create a fluid path through the connector. The catheter system may include a blood collection set coupled to the blood collection adapter. The blood collection set may include a needle assembly configured to receive a blood collection container.

Abstract: Described herein is a technique for mapping the raw text of a job title of an online job posting to an entity embedding, associated with an entity or entry of a title taxonomy. The raw text of the job title is first encoded to generate a multilingual word embedding in a multilingual word embedding space. Then, the vector representation of the job title, as represented in the multilingual word embedding space is translated, using a neural network, to a vector representation of the job title in the entity embedding space. Finally, a nearest neighbor search is performed to identify an entity embedding associated with an entity or entry in the title taxonomy that has a vector representation that is closest in distance to the vector output by the neural network.

Abstract: A refrigerator includes a housing, a discharge device, a cold finger device, and at least two compression devices. A disassembly and assembly hole is provided on the housing located between the at least two third accommodating cavities arranged at intervals, and the disassembly and assembly hole is communicated with the first accommodating cavity and is configured for the disassembly and assembly of the discharge device. By arranging the disassembly and assembly hole, the disassembly and assembly steps of the discharge device are simplified, meeting the need of rapid testing of the compression device. By arranging the discharge device with a stepped piston, the service life of the discharge device is increased and the discharge device has higher reliability and consistency. By arranging a tree topology or net topology, the flow resistance of gas may be reduced and the refrigeration efficiency may be improved, achieving multi-stage refrigeration.

Abstract: The present disclosure relates to a method and apparatus for association detection for a human face and a human hand, an electronic apparatus and a storage medium. The method comprises: acquiring a first image, the first image being an image of a human object; performing feature extraction on the first image to obtain a first feature map of multiple dimensions; performing a feature fusion processing on the first feature map of multiple dimensions to obtain a second feature map of multiple dimensions, the dimensions of the second feature map corresponding to the dimensions of the first feature map in a one-to-one manner; detecting, on the basis of the obtained second feature map of multiple dimensions, a human face position and a human hand position associated with the same human object in the first image. The embodiment of the present disclosure enables easy and convenient association detection for human face and human hand.

Abstract: Some embodiments of the present disclosure provides a dual-power hydraulic roof bolter, which includes an electric vehicle chassis, a machine base part, a drill boom mechanism, a bolting machine, a working platform set, an operating platform and a hydraulic system, and the hydraulic system is connected with the electric vehicle chassis, the drill boom mechanism, the bolting machine, the working platform set and the operating platform to control accordingly actions, the electric vehicle chassis is provided with the machine base part, the machine base part is provided with the drill boom mechanism, and the drill boom mechanism is provided with the bolting machine, the working platform set and the operating platform; the hydraulic system is independently driven by two sets of power sources respectively, and the two sets of power sources are an electric vehicle chassis transfer case driving hydraulic pump and a wind motor driving hydraulic pump respectively.

Abstract: The present invention discloses a spatial posture adjusting device for an optical axis of a microscopic monitoring system for a cellular fermentation tank. The adjusting device includes a base frame, where the base frame is fixedly provided with an up/down adjustment table; the up/down adjustment table is slidably connected to a load plate; the load plate is fixedly provided with a microscope adjustment mechanism and an illumination rotation adjustment mechanism in sequence; the illumination rotation adjustment mechanism includes a base; the base is fixedly connected to a first support frame; the first support frame is fixedly provided with an illuminator; the microscope adjustment mechanism includes a second support frame; the second support frame is fixedly provided with a clamping device; the clamping device is fixedly provided with a microscope device; the illumination rotation adjustment mechanism is fixedly connected with a mobile platform.

Abstract: The disclosure discloses an array substrate, a method for manufacturing the same, a display panel and a display device. The array substrate includes a base substrate; a plurality of data lines and a plurality of dummy leads, wherein the plurality of data lines and the plurality of dummy leads are in the same layer on the base substrate, and the plurality of data lines and the plurality of dummy leads extend along the first direction; and at least one dummy lead includes a plurality of wires which extend in the first direction and are disconnected with one another.

Abstract: The disclosure discloses an array substrate, a method for manufacturing the same, a display panel and a display device. The array substrate includes a base substrate; a plurality of data lines and a plurality of dummy leads, wherein the plurality of data lines and the plurality of dummy leads are in the same layer on the base substrate, and the plurality of data lines and the plurality of dummy leads extend along the first direction; and at least one dummy lead includes a plurality of wires which extend in the first direction and are disconnected with one another.

Abstract: A discrete element method for modelling fracture evolution of roadway surrounding rock is provided, which includes: taking rock cores from a coal seam in the field and recording RQD values, observing roadway deformation, and making a statistical analysis on distribution characteristics of fractures in the coal seam; testing mechanical parameters of coal-rock samples indoors, and calculating strength of a rock mass according to the RQD values; creating a numerical model by using a UDEC-Trigon module to adjust the parameters to match the strength of the rock mass, and correcting model parameters; and creating a numerical model of an engineering scale to adjust the parameters to match field deformation characteristics, and finally simulating fracture evolution of the roadway surrounding rock. The present invention provides accurate and basic mechanical parameters for discrete-element numerical simulation of roadway deformation, guaranteeing realistic and reliable simulation results.

Abstract: A discrete element method for modelling fracture evolution of roadway surrounding rock is provided, which includes: taking rock cores from a coal seam in the field and recording RQD values, observing roadway deformation, and making a statistical analysis on distribution characteristics of fractures in the coal seam; testing mechanical parameters of coal-rock samples indoors, and calculating strength of a rock mass according to the RQD values; creating a numerical model by using a UDEC-Trigon module to adjust the parameters to match the strength of the rock mass, and correcting model parameters; and creating a numerical model of an engineering scale to adjust the parameters to match field deformation characteristics, and finally simulating fracture evolution of the roadway surrounding rock. The present invention provides accurate and basic mechanical parameters for discrete-element numerical simulation of roadway deformation, guaranteeing realistic and reliable simulation results.

Abstract: The present invention discloses a spatial posture adjusting device for an optical axis of a microscopic monitoring system for a cellular fermentation tank. The adjusting device includes a base frame, where the base frame is fixedly provided with an up/down adjustment table; the up/down adjustment table is slidably connected to a load plate; the load plate is fixedly provided with a microscope adjustment mechanism and an illumination rotation adjustment mechanism in sequence; the illumination rotation adjustment mechanism includes a base; the base is fixedly connected to a first support frame; the first support frame is fixedly provided with an illuminator; the microscope adjustment mechanism includes a second support frame; the second support frame is fixedly provided with a clamping device; the clamping device is fixedly provided with a microscope device; the illumination rotation adjustment mechanism is fixedly connected with a mobile platform.

Abstract: An apparatus for protecting a roof tray when a gob-side entry retaining end support migrates is provided. The apparatus is mounted at a top end position of a hydraulic support, and includes a movable bearing mechanism, an automatic expansion/contraction connecting groove mechanism, and an active reset mechanism. The movable bearing mechanism includes two parallel belts and a plurality of rollers supporting the belts, and the rollers are mounted on and supported by a bearing mechanism. The automatic expansion/contraction connecting groove mechanism is two concave base plates fixed between the two belts, and the two concave base plates are spaced by a distance. The active reset mechanism includes two telescopic rods and reset springs sleeved on the telescopic rods, and the telescopic rod is connected to an end portion of the reset spring to form a synchronous mechanism.

Abstract: The present disclosure provides an array substrate, a display panel and a display device. The array substrate includes a base substrate and a thin film transistor. An orthographic projection of a drain of the thin film transistor on the base substrate does not go beyond an orthographic projection of a gate of the thin film transistor on the base substrate.

Abstract: The present disclosure provides an array substrate, a display panel and a display device. The array substrate includes a base substrate and a thin film transistor. An orthographic projection of a drain of the thin film transistor on the base substrate does not go beyond an orthographic projection of a gate of the thin film transistor on the base substrate.

Abstract: A method for a communication device for securely accessing a device includes obtaining accessing authentication information via an out-band channel, the accessing authentication information being used for accessing authentication between a service request device and a service providing device, the service request device and the service providing device sharing the same management device, and forming the out-band channel with the management device respectively (11); and authenticating the accessing authentication information, and providing, by the service providing device, when an authentication result indicates that the authentication of the accessing authentication information is passed, service for the service request device via an in-band data channel, the service providing device and the service request device forming the in-band data channel via a service network (12).

Abstract: A method for a communication device for securely accessing a device includes obtaining accessing authentication information via an out-band channel, the accessing authentication information being used for accessing authentication between a service request device and a service providing device, the service request device and the service providing device sharing the same management device, and forming the out-band channel with the management device respectively (11); and authenticating the accessing authentication information, and providing, by the service providing device, when an authentication result indicates that the authentication of the accessing authentication information is passed, service for the service request device via an in-band data channel, the service providing device and the service request device forming the in-band data channel via a service network (12).