Abstract: A medical stent includes a covered segment and a naked segment. The covered segment includes a cut stent body and a film material arranged on the cut stent body. At least one end of the covered segment is connected with the naked segment, and at least one of the naked segments includes a braided stent body. The covered segment includes a first section, and the medical stent is configured such that an inner diameter of the first section in a first expansion state is smaller than an inner diameter of the cut stent body in a free state, and when the first section is subjected to a radially outward force, the first section expands radially outward. The medical stent has good flexibility and support, is easy to push, and can adjust the inner diameter of the first section according to actual needs, and has good universal applicability.

Abstract: A transistor comprising a first drain region split into first and second drain sub-regions aligned lengthwise and separated by a first low conductivity region, a first source region disposed on a first side of the first drain region split into first and second source sub-regions aligned lengthwise and separated by a second low conductivity region, a second source region disposed on a second side of the first drain region opposite the first side, the second source region split into third and fourth source sub-regions aligned lengthwise and separated by a third low conductivity region, a first gate electrode finger disposed over first and second active regions between the first drain region and first source region, and a second gate electrode finger disposed over third and fourth active regions between the first drain region and second source region.

Abstract: An example apparatus for detecting objects in video frames includes a receiver to receive a plurality of video frames from a video camera. The apparatus also includes a first still image object detector to receive a first frame of the plurality of video frames and calculate localization information and confidence information for each potential object patch in the first frame. The apparatus further includes a second still image object detector to receive an adjacent frame of the plurality of video frames adjacent to the first frame and calculate localization information and confidence information for each potential object patch in the adjacent frame. The apparatus includes a similarity detector trained to detect paired patches between the first frame and the adjacent frame based on a comparison of the detected potential object patches.

Abstract: Disclosed is a cleaning robot. The cleaning robot includes a body, a traveling assembly, a rolling brush assembly, a dust suction assembly, a mopping assembly, and a universal wheel. The traveling assembly, the rolling brush assembly, the dust suction assembly, the mopping assembly, and the universal wheel are all arranged on the body. The dust suction assembly includes a dust box. The rolling brush assembly is configured for sweeping garbage on a ground. The dust box is configured for receiving garbage swept by the rolling brush assembly. In an advancing direction of the cleaning robot, the dust box is arranged in front of the rolling brush assembly, and the mopping assembly and/or the universal wheel is arranged behind the rolling brush assembly.

Abstract: Described herein is a weft-knitted spacer fabric and a preparation method thereof, a polyurethane foam composite material including the fabric, a preparation method of the composite material and its use in shoe materials. The weft-knitted spacer fabric consists of an upper surface layer, intermediate spacer yarns, and a lower surface layer, and the upper surface and the lower surface layer are connected by the tuck of the spacer yarns in the upper surface and the lower surface layer to form a three-dimensional structure in an integrated manner. The different selected tuck needle changes the connecting distance and the number of connections of the tuck, and the thickness of the spacer fabric and the arrangement density of the spacer yarns are changed by the action of the upper and lower surface layers of elastic yarns.

Abstract: A series-parallel monorail hoist based on an oil-electric hybrid power and a controlling method thereof. The monorail hoist includes a cabin, a hydraulic driving system, a lifting beam, a gear track driving and energy storage system, and a speed adaptive control system connected in series with each other and travelling on a track. The monorail hoist is capable of implementing an independent drive by an electric motor or a diesel engine in an endurance mode, a hybrid drive of the electric motor and the diesel engine in a transportation mode, and a hybrid drive of the diesel engine and a flywheel energy storage system in a climbing mode, according to different operating conditions that include conditions of an upslope, a downslope and a load. Power requirements for the monorail hoist under various operating conditions are satisfied, and the excess energy is recovered during the process of travelling.

Abstract: The present disclosure relates to the technical field of fiber-optic gas sensing and laser photoacoustic spectroscopy, and reliability of a gas detection system is improved by actively selecting a working frequency of low noise interference combined with an optical fiber photoacoustic sensing probe capable of isolating high-frequency noise. A gas enters a photoacoustic microcavity through gaps on a sound-sensitive diaphragm after diffusing into a miniature air chamber through a plurality of micropores. Photoacoustic excitation light is incident into the photoacoustic microcavity through a fiber-optic collimator and then excited to generate a photoacoustic pressure wave to cause the sound-sensitive diaphragm to vibrate periodically. An end face of a single-mode optical fiber and the sound-sensitive diaphragm constitutes a fiber-optic Fabry-Perot interferometer. The interferometer measures a deflection of the diaphragm and inverts a concentration of the to-be-measured gas.

Abstract: Disclosed is a plane grating calibration system, comprising an optical subsystem, a frame, first vibration isolator, a vacuum chuck, a workpiece stage, second vibration isolator, a base platform and a controller; the optical subsystem is mounted on the frame, and the frame is isolated from vibration by the first vibration isolator; the vacuum chuck is rotatably mounted on the workpiece stage, the workpiece stage is positioned on the base platform, and the base platform is isolated from vibration by the second vibration isolator. A displacement interferometer is integrated into the optical subsystem, and the entire optical subsystem adopts a method of sharing a light source, thereby avoiding the problems of low wavelength precision and poor coherence of separate light sources.

Abstract: Embodiments of this application disclose a packet transmission method and a related apparatus. An access network device receives a first packet from an Internet-of-things (IoT) function network element; the access network device obtains first information, where the first information indicates that the first packet includes a passive or semi-active IoT instruction; and the access network device performs a passive or semi-active IoT operation based on the first packet. According to the foregoing method, the access network device learns that the packet from the IoT function network element is related to a passive or semi-active internet of things, and the access network device performs the passive or semi-active IoT operation based on the first packet. This resolves a packet transmission problem in a scenario in which a passive or semi-active IoT system is converged with a cellular network.

Abstract: Provided is a display substrate, including: a silicon-based substrate having a display area, a binding area located on one side of the display area, and a trace area located between the display area and the binding area; a trace protection structure is arranged on the silicon-based substrate in the trace area, and a pad assembly is integrated in the silicon-based substrate in the binding area; and a minimum distance between an edge of an orthographic projection of the trace protection structure on the silicon-based substrate and an edge of an orthographic projection of an opening of the pad assembly on the silicon-based substrate is smaller than a maximum size of one subpixel.

Abstract: This application relates to systems and methods for facilitating online search based on offline transaction data.

Abstract: A display panel includes a drive backplane, a transparent insulating layer and a light-emitting device layer. The drive backplane includes a driving circuit layer, a metal wiring layer, a first insulating layer and a reflective electrode layer. The first insulating layer has first via holes filled with first metal connectors. The reflective electrode layer includes first reflective electrodes respectively connected with the metal wiring layer through the first metal connectors. The light-emitting device layer includes a pixel electrode layer, an organic light-emitting layer and a common electrode layer. The pixel electrode layer includes first pixel electrodes respectively connected with the first reflective electrodes through the connection via holes. A distance between an orthographic projection of the connection via hole on the pixel electrode layer and an edge of the first pixel electrode is not less than a first threshold value.

Abstract: Provided herein are tuberculatin analogs that are useful as antivirals, such as anti-HIV, anti-coronaviral, anti-Ebola viral, and anti-influenza viral agents and methods of use thereof.

Abstract: Embodiments of this application disclose methods, systems, and apparatuses for information transmission. In an example method, a network device receives a first passive internet of things instruction, and sends the first passive internet of things instruction to a terminal. The first passive internet of things instruction is an instruction to be sent to a tag, and the terminal is a helper of the tag.

Abstract: Disclosed is a method for measuring gas pressure of a close-distance seam group simultaneously, including the following steps: constructing a pressure-measuring drill hole inclined downwards; lowering a first seam piezometer tube, lowering a baffle and a polyurethane blocking material after a tube head reaching a lowermost seam; and installing a gas pressure gauge; lowering a second seam piezometer tube, lowering the baffle and the polyurethane blocking material after the tube head reaching a second layer of seam; and installing the gas pressure gauge; lowering a nth seam piezometer tube, lowering the baffle and the polyurethane blocking material after the tube head reaching a nth layer of seam; and installing the gas pressure gauge; injecting a high-water and quick-solidifying material into the drill hole; and connecting the gas pressure gauges through optical fibers, and connecting the gas pressure gauges with a ground control system.

Abstract: An integrated optical component coupled to a circuit board of an aerosol sensor is provided. The integrated optical component comprising a medium including a first, second plane, third plane, wherein the first plane is adjacent to a detection area, the second plane is positioned about a photosensor, and the third plane is opposite an angle formed by an intersection of the first and second plane. The integrated optical component further comprising a first lens configured on the first sidewall, the first lens configured to receive incident light from the detection area and focus the incident light onto a reflector through the medium, the reflector configured on the third sidewall, the reflector configured to reflect the incident light towards a second lens, and the second lens configured on the second sidewall, the second lens configured to receive the incident light from the reflector and focus the incident light to the photosensor.

Abstract: An exposure light beam phase measurement method for laser interference photolithography comprises: separating a measurement light from an exposure light beam and inputting light into a laser phase measurement interferometer to carry out phase measurement on the exposure light beam; inputting a reference light beam homologous with the exposure light beam into the laser phase measurement interferometer; processing the reference light beam to form an interference measurement optical signal; calculating to obtain the phase of the exposure light beam. A laser interference photolithography system using the method comprises a laser phase measurement interferometer, a controller and phase modulators, the laser phase measurement interferometer measures whether the phase of an exposure light beam drifts, the controller controls phase modulators to carry out phase modulation, to achieve locking of exposure stripe phase drift and manufacturing of a high-precision variable-period optical grating.

Abstract: A laser interference photolithography system, comprising a laser device, a first reflector, a grating beam-splitter, a second reflector, a first universal reflector, a first lens, a second universal reflector, a second lens, a beam splitting prism, a control module, an angle measurement module, a third lens and a substrate. The control module comprises a signal processing terminal, a controller, and a driver. The signal processing terminal is connected to the angle measurement module, the controller is connected to both the signal processing terminal and the driver, and the driver is connected to both the first universal reflector and the second universal reflector. The laser emits a laser light that is split into two beams of light by the system, and the two beams of light are focused on the substrate for exposure.

Abstract: Apparatus and methods for amplifier linearization are disclosed. In certain embodiments, an RF amplifier includes an RF input terminal that receives an RF input signal, an RF output terminal that provides an RF output signal, a gallium nitride field-effect transistor (GaN FET) having a gate connected to the RF input terminal and a drain connected to the RF output terminal. The GaN FET amplifies the RF input signal. The RF amplifier further includes a gallium arsenide field-effect transistor (GaAs FET) having a gate connected to the RF input terminal and a drain connected to the RF output terminal. The GaAs FET is operable to linearize the GaN FET.

Abstract: A method for identifying a device comprising generating, by a control device, an identification identifier of a multimedia device according to device description information of the multimedia device, sending the identification identifier to the multimedia device, so that the multimedia device displays the identification identifier, acquiring, by the control device, the identification identifier displayed by the multimedia device and an appearance image of the multimedia device, and acquiring the device description information according to the identification identifier displayed by the multimedia device, and associating, by the control device, the device description information with the appearance image of the multimedia device, so that a user equipment identifies the multimedia device according to the appearance image.