Abstract: This application discloses a charging control apparatus and method, and an electric vehicle. The charging control apparatus includes: a signal processing module, configured to: receive a first control pilot signal sent by power sourcing equipment, and send a high-level signal of target duration to a wake-up module based on the first control pilot signal; and the wake-up module, configured to: wake up a battery management system after duration in which the high-level signal is received reaches the target duration. With the use of the charging control apparatus, even if power is on again after a power failure in a charging process, there is no need to remove a charging connector from and re-insert the charging connector into a charging socket or restart an electric vehicle/a charging pile.

Abstract: Embodiments of this application provide a semiconductor device, an electronic device, and a semiconductor device preparation method, and relate to the field of chip manufacturing and packaging technologies, to improve heat dissipation efficiency of the semiconductor device without increasing a size. The semiconductor device includes: a substrate, a source, a drain, a gate, and a groove. The source, the drain, and the gate are all formed on the substrate, and an active region is formed between the source and the drain on the substrate. The groove is disposed in the substrate, and a spacing is formed between the groove and the active region. A heat dissipation layer is formed in the groove, and a coefficient of thermal conductivity of the heat dissipation layer is greater than that of the substrate.

Abstract: An optical probe assembly as a confocal endomicroscope includes an optical focusing stage that focuses an output beam onto a sample and a mirror scanning stage that is movable for scanning the output beam in both a lateral two dimensional plane and an axial direction, using a side-view configuration. The side-view configuration allows for output beam illumination and fluorescent imaging of the sample with greater imaging resolution and improved access to hard to reach tissue within a subject.

Abstract: The technology of this application relates to a high electron mobility transistor including a GaN substrate layer, a barrier layer, a circuit layer, and a field plate that are sequentially stacked. The GaN substrate layer includes a main body layer and a channel layer that are stacked, the channel layer is adjacent to the barrier layer, the circuit layer includes a source, a drain, and a dielectric layer, the dielectric layer is disposed between the source and the drain, the field plate is disposed on a side that is of the dielectric layer and that is away from the barrier layer, an orthographic projection of the field plate on the channel layer is a field plate projection, the channel layer includes a modulation region and a non-modulation region, the non-modulation region surrounds the modulation region, the modulation region and the field plate projection at least partially overlap.

Abstract: A semiconductor device includes a substrate, a gate, a second dielectric layer, and a field plate. The substrate has a first dielectric layer, and a thickness of the first dielectric layer in a first area is greater than a thickness of the first dielectric layer in a second area outside the first area. The gate is located on the substrate and in the first area, the gate includes a first gate structure and a second gate structure, and the second gate structure is formed on a side of the first dielectric layer that is away from the substrate and covers a part of the first dielectric layer. The second dielectric layer covers the gate and the first dielectric layer. The field plate is located on the second dielectric layer and is disposed in both the first area and the second area.

Abstract: The present invention belongs to the technical field of preparing isocyanate derivatives, and particularly relates to a storage-stable polyisocyanate composition and a preparation method therefor. The method comprises: in the presence of a catalyst system, subjecting an isocyanate monomer to a polymerization reaction; terminating the reaction after a suitable conversion rate is reached, so as to obtain a polyisocyanate reaction solution; and then performing heat treatment on the obtained polyisocyanate reaction solution to obtain a heat-treated polyisocyanate mixture, wherein the heat treatment temperature is 10-30° C. higher than the heat-sensitive temperature of the obtained polyisocyanate product, and the heat treatment time is 5-30 min; and then performing separation treatment on the heat-treated polyisocyanate mixture. When the polyisocyanate composition of the present invention is stored at 50° C.

Abstract: The present application provides a screw compressor that comprises a first male rotor and a second male rotor, each of the first male rotor and the second male rotor having convex-helical teeth, the first male rotor and the second male rotor being rigidly connected together; a first female rotor and a second female rotor, each of the first female rotor and the second female rotor having concave-helical teeth, the first female rotor being arranged separately from and opposite to each other; wherein the convex-helical teeth of the first male rotor are engaged with the concave-helical teeth of the first female rotor, and the convex-helical teeth of the second male rotor are engaged with the concave-helical teeth of the second female rotor. The male rotors in the screw compressor are symmetrically so that the axial force exerted on the first male rotor counteract with the axial force exerted on the second male rotor.

Abstract: The present application discloses a pipeline radar and television inspection robot which includes a robot body, a directional drilling lifting device, a directional drilling rotary device, a directional drilling swing device, a radar, cameras and a driving apparatus; wherein the directional drilling lifting device is on a front part of the robot body; the directional drilling rotary device is on the directional drilling lifting device; the directional drilling swing device is on the directional drilling rotary device; the radar and the cameras are on the directional drilling swing device; the driving apparatus are on a bottom of the robot body. The directional drilling lifting device, the radar and the cameras are plugged in the robot body. The robot body electrically connects to cables which electrically connect to a control system. The cameras and the radar are able to be adjusted and the components are connected as modules.

Abstract: The utility model relates to a noise reduction device for an outlet side of a fan, and a heat exchange system including the noise reduction device. The noise reduction device includes: a connecting portion configured to be connected with at least a part of the air duct cover, and form an accommodation space communicating with an airflow on the outlet side via at least one of the through holes; and at least one first chamber and/or at least one second chamber, the first chamber being located in the accommodation space and filled with a sound-absorbing material, and the second chamber being located in the accommodation space and configured as a resonant noise-reduction cavity. The utility model is easy to manufacture, install and maintain, the noise reduction effect is obvious, and therefore the utility model has significant practicability.

Abstract: The present application provides a storage-stable polyisocyanate composition and a preparation method. The polyisocyanate composition is obtained by selecting one or more diisocyanate from aliphatic diisocyanates and alicyclic diisocyanates, and reacting same with an alcohol compound; the polyisocyanate composition contains an isocyanurate group, a uretdione group, a carbamate group, and an allophanate group; within the polyisocyanate composition, the molar ratio of the carbamate group/(uretdione group+isocyanurate group) is 0.01-0.2, and preferably 0.01-0.1. Compared to existing techniques, the present application has the advantage of a noticeable increase in system viscosity of uretdione polyisocyanate during storage. With the present application, by means of controlling the ratio of the carbamate group/(uretdione group+isocyanurate group) within the system, the increase in viscosity of a product during storage is inhibited, thereby improving the storage stability of the product.

Abstract: Provided are compounds of formula (I), or pharmaceutically acceptable salts thereof, which can be used for inhibiting the activity of Aurora A and treating cancer mediated by Aurora A.

Abstract: A lithium ion battery and an electric vehicle with the same are provided. The lithium ion battery includes a cover plate assembly and a battery cell assembly, the cover plate assembly includes a pole and a polarity connecting piece, the pole is connected with the polarity connecting piece, the battery cell assembly is provided with a battery cell tab assembly, and the pole is connected and conducted with the battery cell tab assembly through the polarity connecting piece. As a hard connection, the polarity connecting piece is directly or indirectly connected with the battery cell tab assembly. The polarity connecting piece is in interference fit with the pole for laser welding, so that the connection reliability is high, the overcurrent capability is strong, and electronic conduction is easy.

Abstract: The disclosure provides a cover plate assembly for a battery and a battery device. The cover plate assembly for the battery includes a top cover; a conductive structure arranged on the top cover, the conductive structures including at least one pole for conducting electricity; at least one connection structure, a first end of each connection structure being electrically connected to a corresponding pole, a second end of the each connection structure being electrically connected to a tab of a cell, and the second end of the each connection structure being provided with an installation hole; and a locking structure including at least one locking member, each locking member penetrating the tab to be fixedly connected to the installation hole, to lock the tab on the connection structure.

Abstract: An optical probe assembly as a confocal endomicroscope includes an optical focusing stage that focuses an output beam onto a sample and a mirror scanning stage that is movable for scanning the output beam in both a lateral two dimensional plane and an axial direction, using a side-view configuration. The side-view configuration allows for output beam illumination and fluorescent imaging of the sample with greater imaging resolution and improved access to hard to reach tissue within a subject.

Abstract: Provided are compounds of formula (I), or pharmaceutically acceptable salts thereof, which can be used for inhibiting the activity of Aurora A and treating cancer mediated by Aurora A.

Abstract: A compact single-axis confocal endomicroscope is provided, capable of complying within 2.8 mm diameter endoscope space requirements. The single-axis confocal endomicroscope uses a folded path design achieved between a fixed mirror and a lateral plane scanning mirror thereby producing a high numerical aperture that allows for diffraction-limited resolution with sub-surface depths. The scanning mirror is formed on a fixed-position, scanning MEMS assembly and has a central aperture that allows for illumination beam expansion in the folded path design. A series of spacers are used to retain beam focusing optical elements in fixed positioned relative to the scanning MEMS assembly for coupling with a single mode fiber.

Abstract: A compact single-axis confocal endomicroscope is provided, capable of complying with 2.8 mm diameter endoscope space requirements. The single-axis confocal endomicroscope uses a folded path design achieved between a fixed mirror and a lateral plane scanning mirror thereby producing high numerical apertures that allow for diffraction-limited resolution in sub-surface scanning. The scanning mirror has a central aperture that allows for illumination beam expansion in the folded path design.

Abstract: A scanning assembly for an optical instrument includes a reflector and a folded-beam spring assembly coupled to the reflector for deflecting the reflector for beam scanning. A lever suspension assembly is coupled to the folded-beam spring assembly and provides torsional movement of the reflector for beam scanning over a two-dimensional region, allowing for large total scan angles and large vertical displacements.

Abstract: The utility model relates to a noise reduction device for an outlet side of a fan, and a heat exchange system including the noise reduction device. The noise reduction device includes: a connecting portion configured to be connected with at least a part of the air duct cover, and form an accommodation space communicating with an airflow on the outlet side via at least one of the through holes; and at least one first chamber and/or at least one second chamber, the first chamber being located in the accommodation space and filled with a sound-absorbing material, and the second chamber being located in the accommodation space and configured as a resonant noise-reduction cavity. The utility model is easy to manufacture, install and maintain, the noise reduction effect is obvious, and therefore the utility model has significant practicability.

Abstract: An on-line solution heat treatment process for austenitic stainless steel plates is disclosed, which comprises continuous casting billet heating, high pressure water dephosphorization, rough rolling, finish rolling, softening process, ultra fast cooling, straightening, cutting to length, shot peening, pickling. The process of the present invention makes full use of the residual rolling temperature, without the need of reheating steel plates from the room temperature to the solid solution temperature. Compared with the conventional steel plate rolling process, the process needs to perform the softening process on the steel plates after rolling to ensure that the deformed austenite is fully softened before cooling. After the softening process, ultra fast cooling is performed to cool the steel plates from above 800° C. to below 430° C. so as to prevent intergranular chromium depletion caused by a large amount of precipitation of high chromium carbides from affecting the stain resistance of stainless steel.