Abstract: A folding wave-energy-harvesting mechanism for an underwater vehicle includes an underwater-vehicle main body and a wave-energy-harvesting-device main body. The wave-energy-harvesting-device main body includes a hydrofoil assembly and a yaw assembly. The first state of the hydrofoil assembly is a folding state, and the second state is an unfolding state. The first state of the yaw assembly is the folding state, and the second state is the unfolding state. The wave-energy-harvesting-device main body further includes a driving assembly and an energy-storage assembly. The driving assembly is configured to switch the hydrofoil assembly and the yaw assembly in the first state and the second state to each other. The energy-storage assembly is configured to store the wave energy harvested by the hydrofoil assembly. When the hydrofoil assembly and the yaw assembly unfold, the hydrofoil assembly increases the efficient area for wave-energy harvesting.

Abstract: This invention relates to a surfactant composition, production and use thereof in tertiary oil recovery. The present surfactant composition comprises a cationic surfactant and an anionic-nonionic surfactant, and exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present surfactant composition, a flooding fluid composition for tertiary oil recovery with improved oil displacement efficiency and oil washing capability as compared with the prior art could be produced.

Abstract: A heteroatom-containing alkoxy polyether based anionic-nonionic surfactant has the following molecular formula (I): R1—O-(Poly)n-X—Ya?.a/bMb+??(I). In formula (I), R1 is any one of C1-C50 aliphatic group and aromatic group; each occurrence of group Poly, equal to or different from each other, is independently selected from the group represented by formula (Ru—O)m; n is a number from greater than 0 to 300; for each type of group (Ru—O), m is independently a number from greater than 0 to 100; X is any one of alkylene, alkenylene and arylene containing 1-10 carbon atoms; Y is an anionic group; and M is a cation or a cationic group.

Abstract: A terminal position assurance device and a corresponding connector assembly are disclosed. The terminal position assurance device includes a main body having a main board, an upper board, and a lower board. The upper board and the lower board are arranged perpendicularly to the main board and are located on the same side of the main board. The upper board and the lower board have distal ends away from the main board. The terminal position assurance device further includes an extension arm extending from the distal end of the upper board in a direction substantially perpendicular to the main board and a stopper extending from an outer edge of the extension arm and thus going beyond the main body.

Abstract: The present invention relates to a biological and chemical composite blockage removing agent and preparation process and use thereof, and mainly solves the problems that the existing blockage removing agents have poor blockage removal effect on organic blockages, cause damage to formations and oil-wells, produce serious environmental pollution, and corrode the equipment, pipelines, and the like. The problems can be well solved by using a technical solution of a biological and chemical composite blockage removing agent, which contains the following components in parts by mass: A. 10-50 parts of a biosurfactant; B. 5-20 parts of a chemical surfactant; wherein the chemical surfactant is an anionic-nonionic surfactant, and said technical solution can be used in the industrial production for removing the blockage in the oilfield, and reducing the injection pressure and increasing the injection.

Abstract: A ternary water control and gas recovery method suitable for an unconsolidated siltstone gas reservoir is provided. It includes the following steps: first, running a silt control screen pipe manufactured by an interface hydrophobic modification into a wellbore to realize wellbore water control and silt control; second, filling a surface hydrophobic modified gravel in an annular space between the silt control screen pipe and the wellbore to form a hydrophobic gravel packing layer for water control and silt control; third, injecting a wetting agent aqueous solution into a stratum, and performing a hydrophobic modification on a gas reservoir seepage channel surface to realize in-situ waterblocking and silt migration of the unconsolidated siltstone gas reservoir, and then closing a well for a preset time before exploitation.

Abstract: The present invention relates to a system and method for image processing. An image data processing system is disclosed comprising an image cutting engine for image cutting based on image data; a region of interest processing engine for selecting at least a rendering method for a region of interest; a processing engine for adjusting sampling rate; and rendering engine for rendering the image, with the rendering method selected by the region of interest processing engine. More particularly, the present invention relates to image processing techniques that perform image manipulation, volume rendering, displaying targeted regions of interest and other related functions.

Abstract: System and method for simultaneous object detection and semantic segmentation. The system includes a computing device. The computing device has a processor and a non-volatile memory storing computer executable code. The computer executable code, when executed at the processor, is configured to: receive an image of a scene; process the image using a neural network backbone to obtain a feature map; process the feature map using an object detection module to obtain object detection result of the image; and process the feature map using a semantic segmentation module to obtain semantic segmentation result of the image. The object detection module and the semantic segmentation module are trained using a same loss function comprising an object detection component and a semantic segmentation component.

Abstract: A ternary water control and gas recovery method suitable for an unconsolidated siltstone gas reservoir is provided. It includes the following steps: first, running a silt control screen pipe manufactured by an interface hydrophobic modification into a wellbore to realize wellbore water control and silt control; second, filling a surface hydrophobic modified gravel in an annular space between the silt control screen pipe and the wellbore to form a hydrophobic gravel packing layer for water control and silt control; third, injecting a wetting agent aqueous solution into a stratum, and performing a hydrophobic modification on a gas reservoir seepage channel surface to realize in-situ water blocking and silt migration of the unconsolidated siltstone gas reservoir, and then closing a well for a preset time before exploitation.

Abstract: A method for setting a permission for an application executing on an electronic device includes: detecting a first operation on a first display control; controlling a permission of a predetermined application to be invalid, in response to detecting the first operation; in which, the permission includes a permission capable of using the predetermined application or a permission incapable of using the predetermined application; and disabling launching the predetermined application in response to the invalid permission.

Abstract: The present disclosure provides a rhythm point detection method and apparatus and an electronic device, and relates to the technical field of music analysis. The method includes that: an audio signal to be detected is acquired, and an audio feature curve is generated according to the audio signal to be detected; a music style of the audio signal to be detected is determined; a detection peak threshold and a detection frame width threshold are determined according to the music style of the audio signal to be detected; and a rhythm point of the audio feature curve is determined according to the detection peak threshold and the detection frame width threshold.

Abstract: An air-conditioning indoor unit and an air conditioner are provided. The indoor unit has a frame, a chassis and a sealing member. The frame has an accommodating cavity. The frame is provided on the chassis, and the chassis is located in the accommodating cavity. The chassis and the frame cooperate to form an outlet communicating with the accommodating cavity. The chassis is provided with an accommodating slot adjacent to the outlet. The accommodating slot contains a driving device. The sealing member can seal the accommodating slot.

Abstract: A process of microcellular foam molding an article includes using a modifier to modify properties of amorphous PLA, pouring the modified amorphous PLA into a high pressure vessel, dissolving an SCF in the high pressure vessel to impregnate the modified amorphous PLA in the high pressure vessel which is configured to allow the SCF to effuse through, forming foamed pellets, conveying the foamed pellets to a mold in a second vessel filled with water or oil, heating the second vessel, and cooling the second vessel until a foamed article is finished in the mold.

Abstract: The present invention relates to a system and method for image processing. An image data processing system is disclosed comprising an image cutting engine for image cutting based on image data; a region of interest processing engine for selecting at least a rendering method for a region of interest; a processing engine for adjusting sampling rate; and rendering engine for rendering the image, with the rendering method selected by the region of interest processing engine. More particularly, the present invention relates to image processing techniques that perform image manipulation, volume rendering, displaying targeted regions of interest and other related functions.

Abstract: The present application provides a charging terminal applied in a charging socket and provides a charging socket, the charging terminal includes a main body, a first engagement part and a second engagement part; the first engagement part is configured to pluggably connect with a first mating terminal; and the second engagement part is configured to engage with a second mating terminal of an external charging device. In the charging terminal and the charging socket provided by the present application, when the charging terminal needs to be repaired due to damage, the first engagement part of the charging terminal may be detached from the first mating terminal to complete disassembly, and a first engagement part of an undamaged charging terminal is engaged and fixed in the first mating terminal, the process of which is simple in term of maintenance and reduces the maintenance cost.

Abstract: A method for reading and writing clipboard information, applied to a terminal, includes: acquiring a request for reading and writing clipboard information; determining a read permission for clipboard information, in response to the request for reading and writing clipboard information including a request for reading clipboard information, and allowing to read the clipboard information or refusing to read the clipboard information based on the read permission; and determining a write permission for the clipboard information, in response to the request for reading and writing clipboard information including a request for writing clipboard information, and allowing or refusing to write the clipboard information based on the write permission. The read and write permission of the clipboard can be divided into the read permission and the write permission, thereby facilitating preventing leakage of the clipboard information in the clipboard and improving the security of the clipboard information.

Abstract: The present application provides a terminal body, a connection terminal and a sheet material for manufacturing a terminal body. The terminal body has an insertion portion including a first insertion plate and a second insertion plate. A gap is formed between the first insertion plate and the second insertion plate, which are commonly enclosed to form an insertion slot configured for a mating terminal to be inserted therein. The terminal body has a mounting structure, respectively arranged at the first insertion plate and the second insertion plate, and configured for fixing a limiting member; and a wiring portion, configured for connecting a core of a wire, and comprising a first wiring plate and a second wiring plate. At least a part of the first wiring plate and at least a part of the second wiring plate are stacked and in contact with each other.

Abstract: The present application provides a terminal body for high-voltage connection, a cable assembly and a connector.

Abstract: The invention provides a series of halogenated tetracyclic triterpene derivatives and their preparation and application. It is represented by the following general structural formula: R1 is halogen, R2 is H, and the halogen is selected from fluorine, chlorine, bromine or iodine; or R1 and R2 are each fluorine, and R3 is an amine, alcohol, amino acid, peptide or phosphate linked to oxygen through an acyl group. The derivatives are relatively stable in rat whole blood through pharmacokinetic studies. The absolute bioavailability after a single intragastric administration for male and female rats was 15.6% and 28.4% respectively. The mean bioavailability was 22%. The derivatives showed better in vivo activities compared with the existing standard drugs enalapril and sacubitril valsartan sodium. Meanwhile, hydrophilic prodrugs of the tetracyclic triterpenoid derivatives in the present invention were prepared. The derivatives of the present invention can be used for preparing cardiovascular medicines.

Abstract: Gallium nitride based devices and, more particularly to the generation of holes in gallium nitride based devices lacking p-type doping, and their use in light emitting diodes and lasers, both edge emitting and vertical emitting. By tailoring the intrinsic design, a wide range of wavelengths can be emitted from near-infrared to mid ultraviolet, depending upon the design of the adjacent cross-gap recombination zone. The innovation also provides for novel circuits and unique applications, particularly for water sterilization.