Abstract: A charging/discharging circuit and an electronic device. A first end of a first branch is connected to a voltage supply end, a second end thereof is connected to a first battery, and a voltage provided by the voltage supply end charges the first battery through the first branch; a first end of a second branch is connected to the voltage supply end, a second end thereof is connected to a second battery, and the voltage provided by the voltage supply end charges the second battery through the second branch; the second branch includes a first control circuit that is configured to adjust impedance of the second branch; and a processing module is configured to obtain a first current of the first branch and a second current of the second branch, and indicate, based on the first and second currents, the first control circuit to adjust impedance of the second branch.

Abstract: Provided are a gas processing system, a control method thereof, and an electrical device. The gas processing system includes: a gas storage container, a controller, and a switch component. The gas storage container has a first gas flow branch configured for communicating with a battery box and supplies a dry gas to the battery box. The controller can acquire a state parameter of a gas in the battery box. The switch component is arranged on the first gas flow branch and can switched between a first state, in which the first gas flow branch is turned on, and a second state, in which the first gas flow branch is blocked. The controller is in communication connection with the switch component, and can control the switch component to be switched from the second state to the first state when the state parameter of the gas acquired satisfies a preset condition.

Abstract: The present invention provides a method for OSA (Obstructive Sleep Apnea) severity classification by using recording-based Peripheral Oxygen Saturation Signal. The major feature of the present invention emphasizes on using a recording-based Peripheral Oxygen Saturation Signal (SpO2 signal) as an input, which is different from the deep learning-based prior art of using segment-based signals as an input to a model, and the segment-based signals has only two classification results, i.e. normal or apnea.

Abstract: Provided are a series of polypeptides with antiviral activity. The present invention provides a new strategy for preventing and controlling Enterovirus such as EV71, CVA16, CVA6, CVB3, and CVB5 viruses and provides a new theoretical basis for accelerating the research and development of a polypeptide small molecule drug against Enterovirus such as EV71, CVA16, CVA6, CVB3, and CVB5 viruses.

Abstract: The present invention provides devices and methods for delivering a population of cells or a therapeutic agent to a subject in need thereof.

Abstract: The present disclosure relates to a method of generating energy. This method involves providing a fuel cell comprising anode and cathode electrodes; a separator positioned between the anode and cathode electrodes; and anode and cathode catalysts. The anode catalyst comprises (i) a low-loading of platinum group metals (PGMs) supported on a Group 4-6 transition metal carbide (TMC) or nitride (TMN); (ii) an alloy or physical mixture comprising a Group 10 transition metal selected from Pt, Pd, and Ni and one or more of the following elements: Pt, Pd, Ni, Ir, Rh, Ru, Fe, Re, Sn, W, Mo, Ta, and Nb; or (iii) mixtures thereof. According to the method, a liquid anode fuel comprising one or more hydrazide compounds is added to the fuel cell to generate energy from the liquid anode fuel. Also disclosed is a fuel cell for generating energy from a liquid anode fuel comprising one or more hydrazide compounds.

Abstract: Provided is a double-gene knockout vector system, a method for preparing porcine fibroblasts with both CD163 gene and CD13 gene being knocked-out, prepared porcine fibroblasts, and a method for preparing a gene-edited pig with both CD163 gene and CD13 gene being knocked-out. The vector system of the present disclosure comprises a CD163 gene knockout vector and a CD13 gene knockout vector. The CD163 gene knockout vector comprises a gene editing vector backbone and a DNA fragment ligated to the gene editing vector backbone, with a nucleotide sequence of the DNA fragment being shown in any one of SEQ ID NOs: 1-3. The CD13 gene knockout vector comprises a gene editing vector backbone and a DNA fragment ligated to the gene editing vector backbone, a nucleotide sequence of the DNA fragment being shown in any one of SEQ ID NOs: 4-6.

Abstract: An anode, a flow cell including the anode, and a method for electrocatalytic treatment of bio-oil and/or wastewater are disclosed. The anode comprises RuO2 particles on a titanium support. The method includes flowing a process stream through the flow cell in the absence of added hydrogen, at a temperature of 0° C. to 50° C. and atmospheric pressure, and applying a potential across the flow cell such that the anode is positive with respect to the cathode, thereby electrocatalytically oxidizing compounds in the process stream to produce a treated process stream at the anode and generating hydrogen gas as a byproduct at the cathode.

Abstract: The present disclosure relates to a method of generating energy. This method involves providing a fuel cell comprising anode and cathode electrodes; a separator positioned between the anode and cathode electrodes; and anode and cathode catalysts. The anode catalyst comprises (i) a low-loading of platinum group metals (PGMs) supported on a Group 4-6 transition metal carbide (TMC) or nitride (TMN); (ii) an alloy or physical mixture comprising a Group 10 transition metal selected from Pt, Pd, and Ni and one or more of the following elements: Pt, Pd, Ni, Ir, Rh, Ru, Fe, Re, Sn, W, Mo, Ta, and Nb; or (iii) mixtures thereof. According to the method, a liquid anode fuel comprising one or more hydrazide compounds is added to the fuel cell to generate energy from the liquid anode fuel. Also disclosed is a fuel cell for generating energy from a liquid anode fuel comprising one or more hydrazide compounds.

Abstract: Provided is a double-gene knockout vector system, a method for preparing porcine fibroblasts with both CD163 gene and CD13 gene being knocked-out, prepared porcine fibroblasts, and a method for preparing a gene-edited pig with both CD163 gene and CD13 gene being knocked-out. The vector system of the present disclosure comprises a CD163 gene knockout vector and a CD13 gene knockout vector. The CD163 gene knockout vector comprises a gene editing vector backbone and a DNA fragment ligated to the gene editing vector backbone, with a nucleotide sequence of the DNA fragment being shown in any one of SEQ ID NOs: 1-3. The CD13 gene knockout vector comprises a gene editing vector backbone and a DNA fragment ligated to the gene editing vector backbone, a nucleotide sequence of the DNA fragment being shown in any one of SEQ ID NOs: 4-6.

Abstract: A method and a device for synchronous high-speed photographing of microparticle rotation in a liquid cyclone field and for determining the rotation velocity of a microparticle in a liquid cyclone field by using a combination of a synchronous high-speed photographing system and a transparent microparticle containing two centrosymmetrically arranged inner cores having the same diameter. The method comprises: using a transparent microparticle comprising two inner cores having the same diameter and arranged centrosymmetrically as a rotation test particle; acquiring synchronously two groups of two dimensional image series of microparticle motion in a liquid cyclone field using two orthogonally arranged high-speed digital cameras; and reconstructing a three dimensional motion trajectory of the microparticle from the two groups of synchronous image series, and determining a rotation velocity of the microparticle in the cyclone field at the same time.

Abstract: A magnetic sensor for superconducting quantum interference device using single operational amplifier comprising SQUID, a feedback coil, feedback resistor and an operational amplifier. The voltage signal of SQUID is delivered to one input of the operational amplifier, a bias voltage is delivered to other input of the operational amplifier, and the output of the operational amplifier connects to one end of a feedback resistor, the other end of the feedback resistor connects to a feedback coil that is coupled through mutual inductance with the SQUID so as to generate feedback magnetic flux, the output voltage of the operational amplifier drives the feedback resistance to generate current, thereby forming a flux locking loop. The present invention uses an open loop operational amplifier to implement SQUID magnetic flux locking feedback circuit which simplifies the circuit configuration, decrease the loop delay and thereby achieving higher bandwidth of the flux locking loop.

Abstract: The present invention relates to a fuel-cell system. This system includes an anode electrode; a cathode electrode; a separator positioned between the anode electrode and the cathode electrode, wherein the separator is not an ion exchange membrane; an anode catalyst; and a cathode catalyst, wherein the cathode catalyst is a non-precious metal catalyst or metal-free catalyst. The present invention also relates to a method of generating energy from crude fuel. This method involves providing a fuel-cell system and contacting the fuel-cell system with a crude fuel under conditions effective to generate energy from the crude fuel.

Abstract: A method and a device for synchronous high-speed photographing of microparticle rotation in a liquid cyclone field and for determining the rotation velocity of a microparticle in a liquid cyclone field by using a combination of a synchronous high-speed photographing system and a transparent microparticle containing two centrosymmetrically arranged inner cores having the same diameter. The method comprises: using a transparent microparticle comprising two inner cores having the same diameter and arranged centrosymmetrically as a rotation test particle; acquiring synchronously two groups of two dimensional image series of microparticle motion in a liquid cyclone field using two orthogonally arranged high-speed digital cameras; and reconstructing a three dimensional motion trajectory of the microparticle from the two groups of synchronous image series, and determining a rotation velocity of the microparticle in the cyclone field at the same time.

Abstract: An optical semiconductor device comprises, on a substrate, a fin of diamond-cubic semiconductor material and, at the base of the fin, a slab of that semiconductor material, in a diamond-hexagonal structure, that extends over the full width of the fin, the slab being configured as an optically active material. This semiconductor material can contain silicon. A method for manufacturing the optical semiconductor device comprises annealing the sidewalls of the fin, thereby inducing a stress gradient along the width of the fin.

Abstract: A circuit board assembly includes a circuit board, at least one metal sheet, at least one bus and at least one fixed member. The circuit board has at least one electrical connecting area. The metal sheet is adapted to solder to the electrical connecting area and has at least one metal sheet hole. The bus has a connecting portion. The connecting portion is corresponding to the metal sheet. The bus has at least one fixed screwing hole. The fixed screwing hole is corresponding to the metal sheet hole. The circuit board and the bus is locked by the fixed member.

Abstract: A server adapted to a server rack. The server rack has a first and a second connectors at a rear end of the server rack. The server comprises a tray, a motherboard, an expansion board, an adaption board, a system board, a docking module and a first cable. The motherboard comprises a central processing unit. The motherboard, the expansion, the adaption board and the system board are disposed on the tray. The docking module comprises a third and a fourth connectors. The fourth connector is configured for electrically connected to the first connector, and the third connector is configured for electrically connected to the second connector. One end of the first cable is connected to one end of the third connector, and the other end of the first cable is connected to the adaption board. The first cable is electrically connected to the third connector and the adaption board.

Abstract: The present invention relates to a fuel-cell system. This system includes an anode electrode; a cathode electrode; a separator positioned between the anode electrode and the cathode electrode, wherein the separator is not an ion exchange membrane; an anode catalyst; and a cathode catalyst, wherein the cathode catalyst is a non-precious metal catalyst or metal-free catalyst. The present invention also relates to a method of generating energy from crude fuel. This method involves providing a fuel-cell system and contacting the fuel-cell system with a crude fuel under conditions effective to generate energy from the crude fuel.

Abstract: A circuit board assembly includes a circuit board, at least one metal sheet, at least one bus and at least one fixed member. The circuit board has at least one electrical connecting area. The metal sheet is adapted to solder to the electrical connecting area and has at least one metal sheet hole. The bus has a connecting portion. The connecting portion is corresponding to the metal sheet. The bus has at least one fixed screwing hole. The fixed screwing hole is corresponding to the metal sheet hole. The circuit board and the bus is locked by the fixed member.

Abstract: A magnetic sensor for superconducting quantum interference device using single operational amplifier comprising SQUID, a feedback coil, feedback resistor and an operational amplifier. The voltage signal of SQUID is delivered to one input of the operational amplifier, a bias voltage is delivered to other input of the operational amplifier, and the output of the operational amplifier connects to one end of a feedback resistor, the other end of the feedback resistor connects to a feedback, coil that is coupled through mutual inductance with the SQUID so as to generate feedback magnetic flux, the output voltage of the operational amplifier drives the feedback resistance to generate current, thereby forming a flux locking loop. The present Invention uses an open loop operational amplifier to implement SQUID magnetic flux locking feedback circuit which simplifies the circuit configuration, decrease the loop delay and thereby achieving higher bandwidth of the flux locking loop.