Abstract: A hardened slip and a method of making the hardened slip are disclosed. A method of hard surfacing a slip component for a downhole tool is disclosed. The slip component may have a bearing surface and may be composed of a base material, the base material being metallic. The method may comprise steps of positioning at least the bearing surface of the slip component with a direct contact with a boron source; bonding an external layer at least on the bearing surface to form a metallurgical bond between boron from the boron source with the base material by boriding the base material; and maintaining a bulk temperature of the slip component below a melting point of the base material.

Abstract: The present disclosure discloses a speaker comprising a housing and a sound producing unit fixed to the housing; the sound producing unit comprises: a frame, a vibration system, a magnetic circuit system and a spring damping element; the spring damping element supports the magnetic circuit system in vibration in the holding space; a counterweight block housed in the rear cavity and fixed to a side of magnetic bowl away from the magnetic circuit system. The speaker of the present invention constitutes another vibration system by means of a magnet or a magnetic bowl and a spring damping element, which vibrates opposite to the vibration system consisting of a diaphragm-dome-voice coil, resulting in a reduction of the force on the cone frame; the addition of a counterweight block reduces the effect of air in the rear cavity on the magnet; the magnetic through-holes and leakage holes optimize vibration damping.

Abstract: The disclosure provides a method for establishing a hydrogen charging model for pipeline steel in an equivalent wet hydrogen sulfide environment and an application thereof, which belongs to the field of corrosion electrochemistry. The method includes the following steps: using a cathode hydrogen charging method and a wet hydrogen sulfide environment method respectively to perform hydrogen charging on each sample to be tested under different reaction conditions to obtain several first hydrogen charging samples and second hydrogen charging samples; measuring the hydrogen content of each of the first hydrogen charging sample and the second hydrogen charging sample; performing curve fitting on the variables in the two methods respectively according to the obtained hydrogen content, and the hydrogen charging model for pipeline steel in the equivalent wet hydrogen sulfide environment is obtained according to the fitting result.

Abstract: The disclosure relates to a rapid and comprehensive method for evaluating pitting resistance of stainless steel pipe welds. Weld samples are collected from different positions of one or more welds on the stainless steel pipe to obtain the surface oxide inclusion density and critical pitting temperature of each weld sample, the surface oxidation inclusion density is taken as an independent variable and the critical pitting temperature is taken as a dependent variable to obtain a fitting function formula between the surface oxidation inclusion density and the critical pitting temperature. The surface oxide inclusion density obtained by adopting the same welding process on the stainless steel pipe to be tested is substituted into the fitting function formula to obtain a standard critical pitting temperature of the weld to be tested. The pitting resistance of the weld of the stainless steel pipe to be tested can be evaluated rapidly, accurately, and comprehensively.

Abstract: The patent application discloses a plug useable for isolating sections of a wellbore. The in-situ dissolvable plug comprises a cylindrical body having a backup piece at least at one end of the cylindrical body, a tube and a cylindrical body. The tube may extend through the cylindrical body and backup piece. The cylindrical body may be made of dissolvable material comprising an external surface, and an inner bore surface formed around the tube. The cylindrical body is soft, moldable, and expandable vertical to the tube to form an in-situ plug at downhole.

Abstract: A dissolvable magnesium alloy can be used for components of a downhole tool. The dissolvable magnesium alloy can be dissolved completely and controlled at a dissolving rate so as to be compatible with downhole operations, including hydraulic fracturing operations. The alloy includes nickel at 0.04-0.4% by weight and the balance of magnesium. The alloy is dissolvable in KCl at 2.1% by weight and 95° C. with a dissolving rate in a range of 10-100 mg/cm2/hr, yield strength in a range of 18-37 ksi, ultimate tensile strength in a range of 29-47 ksi, and elongation in a range of 8-40%.

Abstract: The disclosure provides a method for establishing a hydrogen charging model for pipeline steel in an equivalent wet hydrogen sulfide environment and an application thereof, which belongs to the field of corrosion electrochemistry. The method includes the following steps: using a cathode hydrogen charging method and a wet hydrogen sulfide environment method respectively to perform hydrogen charging on each sample to be tested under different reaction conditions to obtain several first hydrogen charging samples and second hydrogen charging samples; measuring the hydrogen content of each of the first hydrogen charging sample and the second hydrogen charging sample; performing curve fitting on the variables in the two methods respectively according to the obtained hydrogen content, and the hydrogen charging model for pipeline steel in the equivalent wet hydrogen sulfide environment is obtained according to the fitting result.

Abstract: A novel outdoor camping cart, comprising a cart body, the cart body comprises a body frame and a cloth bag mounted on the body frame, and the body frame comprises frame flat tubes, which are connected by flat tube connectors. The support tube is pressed into the middle connector through the riveting shaft, so that the bottom support structure is easy to assemble and disassemble. The two side walls of the bump damping connector in contact with the wheel assembly are provided with bump structures, so that the bump damping connector has a damping effect when rotating on the wheel assembly, the bump damping connector is integrally formed with plastic, and the structure is simple. The bump damping connector is connected to the wheel assembly, and it is actively steered through the left and right pull rods during steering. Especially on soft ground and grass, the steering is more labor-saving.

Abstract: The Patent Application discloses an in-situ swellable composition suitable for use in subterranean wells. The swellable composition may comprise a composite material. The composite material swells on contact with water due to chemical reaction of the composite material.

Abstract: A visual dialogue method and system is provided. The method includes obtaining original input data, where the original input data includes current image data and a new question, and the new question is related to the current image data; preprocessing text data and image data in the original input data to obtain a text feature sequence and a visual feature sequence, respectively; using a VisDial dataset to construct a text corpus; obtaining text sequence knowledge by using a potential knowledge searcher based on the visual feature sequence and the text corpus; constructing a sparse scene graph based on the visual feature sequence; performing data fusion on the text feature sequence, the visual feature sequence, the text sequence knowledge, and the sparse scene graph to obtain a data fusion result; and obtaining dialogue content of the new question by using a decoder based on the data fusion result.

Abstract: The patent application discloses a plug useable for isolating sections of a wellbore. The in-situ dissolvable plug comprises a cylindrical body having a backup piece at least at one end of the cylindrical body, a tube and a cylindrical body. The tube may extend through the cylindrical body and backup piece. The cylindrical body may be made of dissolvable material comprising an external surface, and an inner bore surface formed around the tube. The cylindrical body is soft, moldable, and expandable vertical to the tube to form an in-situ plug at downhole.

Abstract: The present disclosure provides a random access method, a random access apparatus, a storage medium, and an electronic device. The random access method is implemented through the cooperation of terminal device and network device. The random access method applied to a terminal device includes: sending a random access request to a network device; obtaining downlink control information corresponding to the terminal device sent by the network device from a physical downlink control channel according to the random access request, where the downlink control information includes a random access response; decoding the downlink control information, extracting scheduling information of a random access instruction from the random access response; and sending the random access instruction to the network device according to the scheduling information.

Abstract: A display substrate is provided, the display substrate has a plurality of sub-pixels arranged in an array, and includes a driving circuit substrate, a plurality of first electrodes, a pixel definition layer and a light-emitting material layer. The pixel definition layer is at least on a side of the plurality of first electrodes away from the driving circuit substrate, and includes a plurality of sub-pixel openings respectively exposing the plurality of first electrodes and at least one partition structure on the pixel definition layer. The light-emitting material layer is on a side of the pixel definition layer away from the driving circuit substrate and at least in the plurality of sub-pixel openings, the pixel definition layer includes a first pixel definition sub-layer and a second pixel definition sub-layer, and a width of the second pixel definition sub-layer is greater than a width of the first pixel defining sub-layer.

Abstract: A high-strength, high-toughness, and corrosion-resistant welding method for TKY nodes in a deepwater jacket includes the following steps: preheating T/K/Y nodes at a predetermined temperature according to a wall thickness of a base material; setting different welding parameters for different welding processes; and performing rooting weld on the preheated T/K/Y nodes through an electrode arc welding process, then performing filling weld through a gas metal arc welding process, and finally performing capping weld through the gas metal arc welding process. A corresponding electrode is selected for the rooting weld, a welding wire is selected for the capping weld according to low-strength matching, a welding wire is selected for the filling weld according to an equal-strength matching principle, and diffusible hydrogen contents of any electrode and any of the welding wires are all less than or equal to a predetermined diffusible hydrogen content.

Abstract: The patent application discloses a degradable thermoset composite. The composite comprises a reaction product of an epoxy resin, a cross-linker, a catalyst. The epoxy resin mixture may comprise at least one cycloaliphatic epoxide. The reaction product may have a glass transition temperature greater than or equal to 140° C. as measured by DMA.

Abstract: A display apparatus and a display holding device thereof are provided. The display holding device includes a front frame and a rear plate. The front frame includes an edge portion, a top portion, a containing portion, an extending portion, and a holding portion. The top portion is connected to the edge portion. An end of the containing portion is connected to the edge portion, and the containing portion is adapted to contain an optical transceiver module. The extending portion adapted to contain a panel module is connected to an another end of the containing portion and extends toward a direction away from the edge portion. The holding portion adapted to contain a light-transmissive element is between the containing portion and the extending portion. The rear plate adapted to contain an optical film module is connected to the front frame. Therefore, a width of the front frame can be further reduced.

Abstract: A compensation method and system for exposure alignment are provided. The method includes: acquiring original data of an aligned pattern, performing first-order processing on the original data to obtain first-order derivative data, obtaining a compensation value based on the original data and the first-order derivative data when exposure alignment has deviation, and compensating the exposure alignment based on the compensation value. According to the compensation method for exposure alignment, the first-order derivative data is obtained by performing first-order processing on the original data, and then the compensation value is obtained based on the original data and the first-order derivative data to compensate the exposure alignment, so that the compensation accuracy is higher, and the accuracy of exposure alignment is optimized.