Abstract: A device for preparing ultra-high purity zinc based on intelligently-controlled zone melting, including a slide platform connected with a screw through a servo control system to control movement of a heating-cooling device. A quartz tube is provided inside an induction heater to protect a melting zone. An infrared thermometer is connected to the heater, and configured to monitor temperature within the melting zone, and control power of the heater. A ring magnetic stirrer with non-contact circumferential rotation cooperates with coil to stir zinc melt. A water-cooling copper jacket is connected to two ends of the heater to cool a zinc bar, and its water inlet and outlet are connected with a water chiller. The infrared thermometer monitors temperature of the zinc bar and controls water flow of the cooling system. A lifting device is connected with a base cabinet to change inclined angle of the zinc bar.

Abstract: The present disclosure relates to a gripper, a clamping device having the same and a mobile robot. The gripper includes a gripper arm which is configured to be connected with a driving mechanism of the clamping device, and a gripper finger which is floatably connected to the gripper arm. The gripper finger has a clamping surface. The gripper arm is driven by the driving mechanism to move so as to drive the gripper finger to clamp or release an object to be clamped. Some solutions provided in the present disclosure can solve the problem that the tray cannot be clamped up or is easy to slip off.

Abstract: A high-thermal conductivity composite material is AlNp/ZA27 composite material, including 2%, 4%, 6%, or 8% by volume of aluminum nitride (AlN) ceramic particles and zinc-aluminium-27 (ZA27) alloy. The ZA27 alloy includes 70.52-71.08% by weight of Zn, 25.58˜27.65% by weight of Al, 1.27˜3.45% by weight of Cu, and 0.50% or less by weight of Mg. In the preparation of the high-thermal conductivity composite material, an as-cast AlNp/ZA27 composite material is subjected to homogenizing annealing and reciprocating extrusion.

Abstract: An innovative equipment system comprises a tap water reservoir system, a disinfectant reactor system, a pump system, a disinfection and safety door spraying system, a sewage recycling system and a sewage treatment system, wherein the tap water reservoir system is mainly configured to store tap water in advance according to actual cargo volumes and disinfection requirements, and generally in tons; and the disinfectant reactor system comprises boron-doped diamond electrode modules, a reactor indicating lamp module, a visible reactor, a smart control screen, at least one water tank and a structure protection module. The Innovative disinfection and sterilization equipment system can easily kill bacteria and viruses such as Escherichia coli, Staphylococcus aureus, Salmonella typhimurium, and new coronavirus in a short time and enhance disinfection efficiency.

Abstract: A transmitting apparatus includes a signal generation circuit and an adjustment circuit. The signal generation circuit is configured to send, to a receiving apparatus, a serial data signal that carries a training sequence and valid data, where the training sequence is used to train a skew or an equalization of the serial data signal, and the valid data is used to detect an amplitude of the serial data signal. The adjustment circuit is configured to receive indication information from the receiving apparatus, and adjust a transmission parameter of the serial data signal based on the indication information, where the transmission parameter includes at least one of the skew, the equalization, or the amplitude.

Abstract: The present invention discloses a spirooxazine photochromic exterior wall coating, comprising the following components by mass percent: 0.6%-1.5% of spirooxazine photochromic compound, 40%-45% of resin, 0.3%-1% of dispersant, 0.2%-0.3% of antifoamer, 1%-3% of additive, 22%-24% of pigment and 30%-32% of solvent. The additive comprises 0.9 wt %-2 wt % of NaCl or KCl solution. The present invention further provides a preparation method for the spirooxazine photochromic exterior wall coating, comprising measuring, grinding, dispersing, mixing, adjusting pH and filtering. Experiments prove that the spirooxazine photochromic exterior wall coating provided by the present invention has good light fatigue resistance effect and can meet the needs of long-term use of building exterior walls.

Abstract: Disclosed are a display apparatus, a drive chip, and an electronic device. When determining that a disconnected signal line exists, the drive chip sends a control signal to a signal line repair module, so that when a shift output end of the first shift unit corresponding to the disconnected signal line outputs an enable signal, a selector switch corresponding to the shift output end is turned on, and then a connection control unit keeps outputting a turn-on signal to a control end of a corresponding connection switch.

Abstract: Disclosed are a display apparatus, a drive chip, and an electronic device. When determining that a disconnected signal line (DL) exists, a drive chip sends a control signal to a signal line repair module, so that shift output ends (OUT) of a plurality of shift units sequentially output enable signals, and the shift unit corresponding to a connection switch electrically connected to the disconnected signal line (DL) continuously outputs enable signals, so that the connection switch electrically connected to the disconnected signal line (DL) is continuously turned on. The display apparatus may repair a disconnected signal line without being returned to a factory and a manual operation.

Abstract: Disclosed are a display apparatus, a drive chip, and an electronic device. When determining that a disconnected signal line exists, a drive chip sends a control signal to a signal line repair module, so that a shift output end of a first shift unit corresponding to the disconnected signal line outputs an enable signal, so as to control a corresponding connection switch in a connection switch group to be turned on, to enable the disconnected signal line to be electrically connected to a repair line. The display apparatus may repair a disconnected signal line without being returned to a factory and a manual operation.

Abstract: The present disclosure provides an automatic test system for actual stress of a bridge based on DIC technology, where the system includes a camera, a phosphor spraying device, a computer, and a sliding rail; the sliding rail is arranged on both sides of an upper wing of a box-shaped concrete beam; the phosphor spraying device is used to spray phosphor on a web of the box-shaped concrete beam to form speckles of varying light and shade; the camera is slidably connected to the sliding rail through a bracket, and is used to photograph the speckles and transmit a speckle image to the computer; and the computer is used to analyze and process the speckle image taken by the camera and generate a time history diagram of stress.

Abstract: Disclosed is a method for improving the immunogenicity of a protein/peptide antigen, the method comprising conjugating a protein/peptide antigen with a sugar to form a sugar-protein/peptide antigen conjugate, which has improved immunogenicity compared to an unconjugated protein/peptide antigen. In particular, the method involves conjugating a pathogen, such as a viral surface protein antigen or a fragment thereof, with a polysaccharide, in particular a capsular polysaccharide of Streptococcus pneumonia. The conjugate with improved immunogenicity can be used to prevent or treat diseases caused by pathogens, in particular diseases caused by coronaviruses.

Abstract: The invention discloses an intelligent mobile patrol method, which comprises the following steps: an intelligent mobile device bound with NFC is used to identify the patrol task process; a patrol display point calls and displays the progress of the patrol task and the items inspected; according to the patrol items of the patrol display point, a mobile terminal is used to collect on-site photos, recordings, videos and other information to accumulate on-site visual data; the visual data obtained are uploaded for intelligent processing and analysis, and the historical patrol records are queried in real time to analyze the maintenance rate, missing inspection rate and equipment availability rate; and the patrol records of WIFI or network real-time record points are used to automatically import equipment exceptions into the missing library.

Abstract: The present invention discloses a ternary polymer solar cell. A photoactive layer of the ternary polymer solar cell includes two non-fullerene electron acceptors with large planarity. The weight percentage composition of the photoactive layer in the ternary polymer solar cell is: 41.6-50% of polymer electron donor, 0-50% of polymer electron acceptor, and 0-50% of non-fullerene perylene diimide (PDI) electron acceptor. The non-fullerene PDI electron acceptor is added into the photoactive layer to broaden the spectral absorption of the photoactive layer, improve the phase separation of the photoactive layer and inhibit the recombination of bimolecular charges, resulting in more efficient generation and transport of charges, thereby increasing a short-circuit current density of the ternary polymer solar cell device, and finally improving the power conversion efficiency of the ternary polymer solar cell device. Moreover, a new direction is provided for the selection of the all-polymer non-fullerene acceptor.

Abstract: The present disclosure provides an automatic test system for actual stress of a bridge based on DIC technology, where the system includes a camera, a phosphor spraying device, a computer, and a sliding rail; the sliding rail is arranged on both sides of an upper wing of a box-shaped concrete beam; the phosphor spraying device is used to spray phosphor on a web of the box-shaped concrete beam to form speckles of varying light and shade; the camera is slidably connected to the sliding rail through a bracket, and is used to photograph the speckles and transmit a speckle image to the computer; and the computer is used to analyze and process the speckle image taken by the camera and generate a time history diagram of stress.

Abstract: A flyback converter is provided that compares a drain-to-source voltage of a synchronous rectifier switch transistor to a negative threshold voltage to detect whether the synchronous rectifier switch transistor has a partially-open or an open fault condition. The flyback converter also compares a gate terminal voltage of a gate driver to the synchronous rectifier switch transistor to a positive threshold voltage to detect whether the synchronous rectifier switch transistor has a gate open or a gate short-circuit fault condition.

Abstract: Disclosed is a system for determining a primary switching event in an isolated converter having a primary-side and a secondary-side. The system includes a primary-switch (PS) on the primary-side, a synchronous rectifier (SR) on the secondary-side, an integration circuit, and a SR controller. The integration circuit is in signal communication with the SR on the secondary-side and the SR controller is in signal communication with the SR and the integration circuit. The SR is configured to produce a drain-to-source voltage (VDS) and the integration circuit is configured to integrate a difference between the VDS and a output voltage (VOut) (produced by the secondary-side) over time to produce a VDS over time value (VTime). The SR controller is configured to determine if the VDS is greater than a first threshold voltage (VTH) and determine the primary switching event when the VTime is greater than a second threshold voltage (VSTH).

Abstract: A flyback converter is provided that compares a drain-to-source voltage of a synchronous rectifier switch transistor to a negative threshold voltage to detect whether the synchronous rectifier switch transistor has a partially-open or an open fault condition. The flyback converter also compares a gate terminal voltage of a gate driver to the synchronous rectifier switch transistor to a positive threshold voltage to detect whether the synchronous rectifier switch transistor has a gate open or a gate short-circuit fault condition.

Abstract: Disclosed is a system for determining a primary switching event in an isolated converter having a primary-side and a secondary-side. The system includes a primary-switch (PS) on the primary-side, a synchronous rectifier (SR) on the secondary-side, an integration circuit, and a SR controller. The integration circuit is in signal communication with the SR on the secondary-side and the SR controller is in signal communication with the SR and the integration circuit. The SR is configured to produce a drain-to-source voltage (VDS) and the integration circuit is configured to integrating a difference between the VDS and a output voltage (VOut) (produced by the secondary-side) over time to produce a VDS over time value (VTime). The SR controller is configured to determine if the VDS is greater than a first threshold voltage (VTH) and determine the primary switching event when the VTime is greater than a second threshold voltage (VSTH).

Abstract: The present invention discloses a ternary polymer solar cell. A photoactive layer of the ternary polymer solar cell includes two non-fullerene electron acceptors with large planarity. The weight percentage composition of the photoactive layer in the ternary polymer solar cell is: 41.6-50% of polymer electron donor, 0-50% of polymer electron acceptor, and 0-50% of non-fullerene perylene diimide (PDI) electron acceptor. The non-fullerene PDI electron acceptor is added into the photoactive layer to broaden the spectral absorption of the photoactive layer, improve the phase separation of the photoactive layer and inhibit the recombination of bimolecular charges, resulting in more efficient generation and transport of charges, thereby increasing a short-circuit current density of the ternary polymer solar cell device, and finally improving the power conversion efficiency of the ternary polymer solar cell device. Moreover, a new direction is provided for the selection of the all-polymer non-fullerene acceptor.

Abstract: A power system and related methods provide sense resistor fault detection and safe operation of switching power converters and connected devices such as portable electronic devices powered by the switching power converter. The power system detects an open circuit or short circuit condition of the sense resistor and controls output current of the switching power converter to ensure safe operating conditions of the power system and connected equipment. The power system can also detect initial inrush current of the connected equipment and detect a duty cycle of the switching power converter to positively detect a short circuit condition of the sense resistor.