Abstract: The invention provides a power distribution and drive system for a remotely underwater operated vehicle ROV, comprises: a high-voltage DC power supply device, located above the water surface to provide high-voltage DC voltage to the ROV; a DC buck conversion device, connected to the high-voltage DC power supply device through a cable for converting the high-voltage DC voltage to a low-voltage DC voltage to supply power to the ROV, wherein the DC buck conversion device comprises multiple parallel DC conversion modules, each DC conversion module bearing an average load current to supply power to the ROV; and at least one thruster, which comprises a propeller, a synchronous motor, and a driver.

Abstract: The disclosure relates to a field of electrical technology, and particularly discloses an electrical apparatus, a door opening and closing device and a control method of a clutch thereof. The door opening and closing device includes: a drive mechanism, a door ejection mechanism, a door rotation mechanism and an angle acquisition unit. a drive mechanism including a driver, a first transmission assembly, a second transmission assembly connected to the driver and simultaneously separably connected to the first transmission assembly, and a clutch-ejection-push assembly pushing the second transmission assembly to separate from or connect to the first transmission assembly; and a linkage gear connected to the first transmission assembly and simultaneously connected to the door ejection mechanism 00) and the door rotation mechanism. The angle acquisition unit is configured to acquire a rotation angle of the linkage gear.

Abstract: A task processing method includes displaying a user prompt according to flight data of a plurality of flight tasks, in response to a selection operation with respect to the user prompt, selecting a target flight task, and automatically controlling, according to the flight data of the target flight task, an operation of an aerial vehicle to reproduce the target flight task. The target flight task is one flight task of the plurality of flight tasks. The flight data of the target flight task includes a waypoint coordinate of a waypoint and a gimbal orientation at the waypoint associated with the target flight task. Automatically controlling the operation of the aerial vehicle to reproduce the target flight task includes controlling the aerial vehicle to fly to the waypoint, and controlling a gimbal of the aerial vehicle to face the gimbal orientation while the aerial vehicle is at the waypoint.

Abstract: This disclosure describes systems, methods, and devices related to video post-processing using a single local directional pattern (LDP) for multiple post-processing steps. A method may include identifying video received by a first device from a second device and decoded by the first device; generating a LDP of a video frame of the decoded video; detecting, based on the LDP and the video frame input to a blurred region detection algorithm, a blurred region and a non-blurred region of the video frame; applying, based on the LDP and the video frame input to a super resolution algorithm, super resolution on the non-blurred region of the video frame without applying the super resolution to the blurred region; and generating, based on the LDP and the video frame input to a blended image algorithm, a blended image of a low-resolution image of the video frame and a high-resolution image of the video frame.

Abstract: A display panel includes first sub-pixels, second sub-pixels, and first and second signal lines. The second sub-pixels at least partially surround the first sub-pixels. The first signal lines are electrically connected to the first sub-pixels and are configured to transmit at least one of a first positive voltage signal, first negative voltage signal, first initial voltage signal and a data signal to the first sub-pixels. The second signal lines are electrically connected to at least part of the second sub-pixels and are configured to transmit at least one of a second positive voltage signal, second negative voltage signal, second initial voltage signal and another data signal to the at least part of the second sub pixels. A first sub-pixel and a second sub-pixel display a same gray scale, and a luminance of the first sub-pixel is less than a luminance of the second sub-pixel.

Abstract: A method of enhancing the efficacy of a targeted protein degrader and its derivative therapeutics is provided. The mTOR inhibitor can significantly enhance the degradation of substrates by targeted protein degraders such as molecular glue degraders and PROTACs, thereby achieving therapeutic purposes. Moreover, the combination therapy is particularly suitable for myeloma patients who have developed resistance to immunomodulatory drugs (IMiDs), a kind of molecular glue degrader, of which the continuous use resulting in reduced treatment efficacy and myeloma relapse. Also provided is a pharmaceutical composition, which comprises a targeted protein degrader and its derivative therapeutics, and a mTOR inhibitor. By promoting the degradation of substrates by targeted protein degrader and its derivative therapeutics, the effectiveness of such drugs in treating disease can be increased.

Abstract: Provided are a high temperature-resistant composite nanofiltration membrane and a preparation method thereof. The high temperature-resistant composite nanofiltration membrane includes a base membrane and a polyamide membrane arranged on the base membrane; wherein the polyamide membrane is prepared from raw materials comprising: an amine, an inorganic salt, a silane additive, a polyacyl chloride, and an oil phase solvent; and the silane additive is at least one selected from the group consisting of 3-aminopropyltriethoxysilane, divinyltriaminopropyltrimethoxysilane, N-cyclohexyl-?-aminopropyltrimethoxysilane, and trimethoxy[3-(phenylamino)propyl]silane.

Abstract: The present disclosure provides a preparation method of a reverse osmosis composite membrane, including the following steps: coating a gelatin solution on a non-woven fabric layer and cooling to form a gelatin gel layer; coating a salt solution on a surface of the gelatin gel layer to obtain a gel/non-woven fabric composite membrane; placing the gel/non-woven fabric composite membrane in an aqueous phase solution, transferring into an oil phase solution, and conducting interfacial polymerization to obtain a non-woven fabric/gel/polyamide composite membrane; placing the non-woven fabric/gel/polyamide composite membrane in water, and heating to remove the gelatin gel layer to obtain a non-woven fabric/polyamide composite membrane; and introducing a trimesoyl chloride (TMC) gas from a side where the non-woven fabric layer is away from a polyamide layer in the non-woven fabric/polyamide composite membrane, conducting gas-liquid interfacial polymerization by chemical vapor deposition (CVD), and drying to obtain th

Abstract: A speaker includes a frame, a vibration system including a diaphragm and a voice coil driving the diaphragm to vibrate and emit sounds, and a magnetic circuit system. The diaphragm includes a dome and a suspension surrounding the dome, the dome includes a first dome and a second dome stacked on the first dome, the second dome is smaller than the first dome and a projection of the second dome along a vibration direction of the diaphragm is entirely located on the first dome, the first dome is a metal dome, or a plastic dome, or a composite dome comprising a metal layer and a foam layer, the second dome is a metal dome, or a plastic dome, or a composite dome with a metal layer and a foam layer. Compared with the related art, the speaker disclosed by the present disclosure has a high strength of the dome.

Abstract: The disclosure discloses a refrigerator, including: a main body formed with an accommodation space that has an opening; a door body rotatably disposed on the main body via a rotating shaft to enclose or open the opening, the door opening and closing device including a front connecting rod; and a sliding assembly which includes a connecting member and a sliding member. The connecting member is fixed to one of the front connecting rod and the door body, the sliding member is disposed on another of the front connecting rod and the door body, and the sliding member is slidably connected to the connecting member, and thus the front connecting rod can move along an axial direction of the rotating shaft relative to the door body.

Abstract: The present invention relates to the field of photonic integrated circuits and provides a semiconductor device and a manufacturing method thereof. The semiconductor device includes an EIC chip and a PIC chip arranged on a substrate, the EIC chip is located between the PIC chip and the substrate. In embodiments, at least one EIC chip is disposed on a surface of a single PIC chip facing the substrate, and the EIC chip is mounted on the substrate through a connection structure. Therefore, the wiring of the PIC chip in the semiconductor device of the present invention is optimized such that the voltage drop due to long wiring distance can be suppressed, and the package structure of the semiconductor device is also optimized.

Abstract: The door opening and closing device is used to open a door body disposed on a main body. The door opening and closing device includes: a base, a driving mechanism, a linkage gear and a door rotation mechanism. The linkage gear is rotatably disposed on the base and is in transmission connection with the driving mechanism. The door rotation mechanism is disposed between the linkage gear and the base. An end of the door rotation mechanism is connected to the linkage gear, and another end of the door rotation mechanism is connected to the door body. In a condition that the driving mechanism drives the linkage gear to rotate, the door rotation mechanism drives the door body to rotate relative to the main body to open or close the door body.

Abstract: Disclosed is a use of G007-LK in promoting osteogenic differentiation of dental mesenchymal stem cells and bone tissue regeneration. In vitro experiments of the present application show that G007-LK has the ability to induce SHED to form mineralized nodules and promote osteogenic differentiation; in vivo experiments show that G007-LK pretreatment of SHED for 7 days combined with Geistlich Bio-Oss® collagen bone scaffold can enhance the in vivo osteogenic effect of SHED and promote the subcutaneous ectopic osteogenesis of nude mice, indicating that G007-LK has good osteoinductivity and is a potential osteogenic drug. Therefore, G007-LK can promote osteogenic differentiation of dental mesenchymal stem cells and be applied to bone tissue regeneration.

Abstract: A display device, a gamma voltage data group switching method and module. The display device includes a display-driver integrated circuit and a first storage unit. The display-driver integrated circuit includes a second storage unit, and the display device includes a gamma voltage data group switching module. The gamma voltage data group switching module is configured to pre-store, in the first storage unit, multiple groups of gamma voltage data groups respectively applied to various application scenarios; when switching of an application scenario of the display device, load a gamma voltage data group corresponding to the current application scenario and stored in the first storage unit into the second storage unit.

Abstract: The present disclosure relates to a field of photonic computing and provides a photonic computing system including: a photonic computing unit configured to receive a first plurality of optical signals, wherein the first plurality of the optical signals represent a first set of values respectively. The photonic computing unit includes a plurality of weight modules, the weight modules represent a plurality of predetermined values respectively, and each of the weight modules corresponds to one of the predetermined values. Each of the weight modules includes: an optical input part configured to receive one optical signal of the first plurality of the optical signals, and at least one directional coupler. The weight module corresponds to one of the predetermined values to achieve the multiplication operation.

Abstract: A method for implementing enhanced virtual digital representation in a metaverse includes monitoring attribute information of a virtual digital object and user information of at least one user in a scenario, obtaining, based on the attribute information, state decision data of the virtual digital object, determining, based on the state decision data and the user information, whether an interaction with a user in the scenario needs to be triggered, and notifying, based on determining that the interaction with the user needs to be triggered, the user of the state decision data of the virtual digital object by interacting with the user using a virtual avatar.

Abstract: A meta-searching method, including determining a target metaverse for a current search using intent classification based on an inquiry text included in a searching request of a user; extracting a searching clue and a clue type; selecting a current search engine for performing the current search using the target metaverse and the clue type by prioritizing a search engine associated with the target metaverse; performing identity authentication using the user account information of the user in the target metaverse prior to the search based on determining that user account information is required to search for the searching clue for performing a search using the current search engine, and performing the search using the current search engine based on the searching clue; and providing the search results to the user.

Abstract: An improved Paillier cryptosystem generates a product of ciphertext data and plaintext data by inverting ciphertext data using a square of a public encryption key to generate a modular multiplicative inverse of the ciphertext data; subtracting plaintext data from the public encryption key to generate negative plaintext data; and generating a modular exponentiation of the modular multiplicative inverse of the ciphertext data, the negative plaintext data and the square of the public encryption key.

Abstract: A computer-implemented method for performing an optimized spatial join operation between geospatial datasets is described. The method includes analyzing each geospatial dataset to extract spatial metadata by performing an one-pass scan of each geospatial dataset to collect spatial metadata. The method further includes applying a heuristic-based method to identify an optimal number of partitions for each geospatial dataset and a hybrid sampling strategy with Reservoir and Bernoulli sampling for each partition. The method also includes generating spatial partitions based on the extracted spatial metadata including shuffling collected samples, increasing the number of samples, and mixing samples from all geospatial datasets.