Abstract: A large-scale fabrication technique for PIM-1 asymmetric membranes doped with low-molecular-weight polyethylene glycol for gas separation. Based on the membrane fabrication technique of dry/wet phase inversion, firstly, the coagulation process of casting solution is regulated by low-molecular-weight polyethylene glycol to thin the dense functional layer, to improve the hydrophilicity of the membrane structure, and to form mass transfer channels for the diffusion of polyethylene glycol into the dense functional layer. Then, directional migration and enrichment of polyethylene glycol are realized through capillary action induced by directional water evaporation for large-scale fabrication of PIM-1 asymmetric membranes doped with low-molecular-weight polyethylene glycol in the dense functional layer for gas separation, and thereafter high permeation ability and high selectivity are achieved simultaneously.

Abstract: A utility vehicle for power emergency repair includes a cab, a carriage and a lighting device, including mounting bases, a wire pole, a rotary base and a lamp assembly. A rotary shaft is bridged between the mounting bases, and the rotary base is fixedly connected to the rotary shaft. First and second positioning units are provided on the top of the carriage. The rotary base has first and second positioning surfaces, the first positioning unit includes a first limiting platform, and the second positioning unit includes a rotation limiting plate and positioning plates. The positioning plates is supported on a lower end surface of the rotation limiting plate. The utility vehicle further includes a driving assembly and first and second contacts. A trigger signal is generated and the driving assembly is controlled to release braking on the rotary shaft when the first and second contacts contact each other.

Abstract: The present application relates to a silicon-carbon composite material in the form of particles comprising a porous carbon skeleton, a silicon-containing deposition layer, and a carbon-containing coating layer, wherein the silicon-containing deposition layer is in pores of the porous carbon skeleton, the carbon-containing coating layer is on the silicon-containing deposition layer and/or on the surface of the particles, and the silicon-carbon composite material has an oil absorption number of 35 mL/100 g to 80 mL/100 g. The silicon-carbon composite material of the present application has a high energy density and an improved cycle life. In addition, the present application further relates to a negative electrode plate comprising the material, a secondary battery, a battery module, a battery pack, and a power consuming device.

Abstract: The utility model discloses a small-sized connector convenient for dismounting and mounting, the connector being inserted and received in a female socket of a PCB board, comprising: a connector housing inserted and received in the female socket; two elastic clamping plates, wherein the two elastic clamping plates are symmetrically mounted on both sides of the connector housing, first ends of the two elastic clamping plates are each provided with a clamping hole, and the female socket is provided with a clamping boss clamped with the clamping hole; and a pull strap, wherein both ends of the pull strap are respectively connected to second ends of the two elastic clamping plates, and the pull strap is used to pull the second ends of the two elastic clamping plates to separate the clamping holes at the first ends of the two elastic clamping plates from the clamping bosses of the female socket.

Abstract: Disclosed is a ground wire spacer structure of a connector, comprising two groups of connector monoblocks that are symmetrical and spliced, wherein any group of the connector monoblocks comprise a housing provided with: a plurality of groups of elastic pieces, wherein one end of the elastic piece is connected to a female socket of the connector, and the other end of the elastic piece is connected to a wire group of the connector; a plurality of metal spacers distributed between two adjacent groups of the elastic pieces and used to separate the elastic pieces; and a conductive sheet mounted on the housing, wherein the conductive sheet is abutted against the plurality of spacers, the conductive sheet is connected to a ground wire in the wire group, and the metal spacers and the conductive sheet form a plurality of independent spaces for accommodating the elastic pieces respectively.

Abstract: A multiple gate transistor and method of its manufacture are described. The transistor comprises a common substrate, a source, a drain, a body, a first gate electrode and a second gate electrode. The first gate electrode and the second gate electrode are colinearly aligned along a horizontal plane of the common substrate and are separated by a dielectric wall. The dielectric wall provides electrical isolation between the first gate electrode and the second gate electrode.

Abstract: The present application relates to a secondary battery, a battery, and a power consuming device, the secondary battery comprises an electrode assembly, and the electrode assembly comprises: at least one positive electrode sheet and at least one negative electrode sheet, a negative electrode film layer of the at least one negative electrode sheet having a nonreactive region thereon, the nonreactive region being not opposite a positive electrode film layer on the positive electrode sheet disposed adjacent to the negative electrode sheet where the nonreactive region is located, and the at least one nonreactive region being provided with a prelithiation layer; wherein total capacity of the secondary battery is Q, total capacity from prelithiation of all the prelithiation layers is QLi, and QLi meets the following condition: 0.5% Q?QLi?10% Q.

Abstract: A silicon-carbon composite material and a preparation method thereof, a negative electrode plate, and a secondary battery are disclosed. The silicon-carbon composite material includes a porous carbon matrix and silicon-based particles. The porous carbon matrix internally includes a plurality of pore channels with a width of 5 nm-50 nm. The silicon-based particles are distributed in the pore channels, and the porous carbon matrix meets: 1.0×10?7?Vtotal/Stotal?10.0×10?7, where Stotal is the total surface area occupied by the pore channels with the width of 5 nm-50 nm, and the measurement unit is: ×104 cm2/g; and Vtotal is the total pore volume occupied by the pore channels with the width of 5 nm-50 nm. The silicon-carbon composite material has high electrical conductivity. When being applied to a negative electrode of the secondary battery, the silicon-carbon composite material can effectively increase the volume capacity and energy density of the secondary battery.

Abstract: This application relates to a silicon-carbon composite material. The silicon-carbon composite material includes a carbon nanotube-and-porous carbon composite substrate and a silicon-based material. The porous carbon is connected to the carbon nanotube by a connecting unit in the carbon nanotube-and-porous carbon composite substrate. The high conductivity and strong mechanical properties of the carbon nanotubes can improve the overall conductivity, compression resistance, and expansion resistance of the silicon-carbon composite material, thereby improving cycle performance, electrode plate cycle expansion resistance, and rate performance of a secondary battery.

Abstract: A trench MOSFET device implements a trench source/body contact structure and includes a first MOSFET section and a second MOSFET section where the first MOSFET section has a body contact resistance lower than a body contact resistance of the second MOSFET section. In some embodiments, the first MOSFET section includes trench source/body contacts to make electrical contact with the source region and with a body contact doped region having a first doping level. In one embodiment, the second MOSFET section includes trench source/body contacts that contacts only the source region. In another embodiment, the second MOSFET section includes trench source/body contacts to make electrical contact with the source region and with a second body contact doped region having a second doping level lower than the first doping level. In some embodiments, the first MOSFET section has a transistor area much smaller than the transistor area of the second MOSFET section.

Abstract: A baculovirus vector and a use thereof in the preparation of a recombinant adeno-associated virus (rAAV) in an insect cell are provided. The baculovirus vector includes an exogenous gene expression cassette and a stable sequence. The stable sequence is located at a site 5 kb or less from the exogenous gene expression cassette, and the stable sequence is a conserved noncoding element (CNE) sequence or a nucleocapsid assembly-essential element (NAE) sequence. When an insect cell is infected with a recombinant baculovirus (rBV) constructed in this way, after multiple continuous passages, production levels of the rBV and the rAAV still remain relatively stable.

Abstract: The present disclosure discloses an optical imaging lens group. The optical imaging lens group comprises, sequentially along an optical axis from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens have refractive powers. At least one lens in the first lens to the eighth lens has a non-rotationally symmetric aspheric surface; a total effective focal length fy of the optical imaging lens group in a Y-axis direction and a total effective focal length fx of the optical imaging lens group in an X-axis direction satisfy: fy/fx<0.8; and an f-number Fnoy of the optical imaging lens group in the Y-axis direction satisfies: Fnoy<2.9.

Abstract: The present utility model discloses a connector for preventing signal interference, comprising: a connector housing; a plurality of groups of wires arranged in the connector housing, wherein any group of the wires comprise a signal wire and a ground wire, and the ground wires in the plurality of groups of the wires are connected in series; and a metal partition plate, wherein a plurality of spacers are arranged on the metal partition plate, the spacers are positioned on both sides of the wires to separate two adjacent groups of the wires, and the spacers are connected to the ground wires. The present utility model solves the problem of signal interference caused by the absence of an isolation structure between wires in the existing connector.

Abstract: This application discloses a secondary battery and an apparatus containing the secondary battery. The secondary battery secondary battery includes an electrode assembly including a cell and tabs extending from the cell, the cell includes a negative electrode plate, the negative electrode plate includes a negative current collector and a negative electrode film arranged on at least one surfaces of the negative current collector and including a negative active material, wherein the negative active material includes artificial graphite including secondary particles; and the cell satisfies 5 cm?0.5×?{square root over (a2+b2)}?15 cm, and a?15 cm, wherein a is the maximum size of the cell in the direction that the tabs extend, in cm; and b is the maximum size of the cell in a direction perpendicularly intersecting with the direction that the tabs extend, in cm.

Abstract: The invention discloses an integrated digital PCR instrument and a control method therefor.

Abstract: An expression cassette containing overlapping open reading frames and an application thereof are provided. The overlapping open reading frames are overlapping open reading frames of a first ORF and a second ORF and include in sequence from a 5? end to a 3? end: a first promoter at least used to drive gene transcription of the first ORF; a 5? part of a gene of the first ORF; an intron; and a 3? part of a gene of the second ORF, the intron including a second promoter used only to drive gene transcription of the second ORF. By arranging two promoters in a single expression cassette in the disclosure, the two promoters are used to drive the expression of proteins of the overlapping reading frames and regulate the relative expression time and expression intensity of different proteins.

Abstract: The present application provides a silicon-carbon composite, a method of preparing the same, and a secondary battery including the silicon-carbon composite. The silicon-carbon composite includes porous carbon-based matrix particles having a three-dimensional network interconnecting pore structure; and silicon-based nanoparticles, at least a portion of which is provided in the three-dimensional network interconnecting pore structure. The present application enables secondary batteries to have an improved cycle performance and energy density.

Abstract: The present disclosure relates to a cavity of a medical device. The cavity may include a bore and an accommodating cavity configured to provide an accommodating space for at least a portion of a couch in a radial direction of the bore. The accommodating cavity may be disposed on an inner wall of the bore and extend along an axial direction of the bore, and the accommodating cavity may be configured to form, with the bore, a connected space in which the at least a portion of the couch is allowed to move along an axial direction of the bore.

Abstract: A gate structure of flow guiding sediment bypass tunnel with self-adaptive inlet adjustment the gate structure comprises a sediment bypass tunnel main body, wherein: the sediment bypass tunnel main body comprises a second revolution wheel, a second braking rim, a top water stopper plate and a weir, a second regulator is provided at a front side of the sediment discharge tunnel, the second revolution wheel is provided at a top portion of the second regulator, a top portion of the second revolution wheel is welded with the second valve lever, the second valve lever is connected with the top portion of the second regulator, and by providing the flow guiding structure at the bottom portion bottom water flows with higher sediment concentrations can be guided into the tunnel; and the altitude of the flow guiding inlet at the bottom portion can be automatically controlled with the gate structure.

Abstract: A method for detecting a state of an energy storage device (e.g. lithium-ion battery) is provided, which includes acquiring at least one of a change signal of a temperature or a change signal of a pressure inside the energy storage device, and determining the state of the energy storage device based thereon. The method may further include triggering a warning when the state of the energy storage device meets a preset condition, such as when the energy storage device is determined to be in an irreversible state, an internal short circuit state, a safety valve opening state, or a thermal runaway state. A detection device implementing the detection method is also provided, which comprises a sensing module and an analyzing module. The sensing module is arranged at an interior position of the energy storage device, and can include an optical sensor and/or an electrical sensor.