Abstract: The present invention belongs to the technical field of stress detection and provides a method and device for testing stress of a high-temperature component of a power plant boiler. The adjusting assembly includes a plurality of bearing blocks, each bearing block is provided with an accommodating groove vertically, limiting blocks are disposed at two ends of the accommodating groove symmetrically, an elastic member, a first connecting rod, and a second connecting rod are disposed in the accommodating groove, and a limiting plate is fixedly connected to one end of each of the first connecting rod and the second connecting rod. According to the present invention, lengths of the first connecting rod and the second connecting rod extending out of the accommodating groove are adjusted, so that the device can be adjusted according to a caliber of a pipeline of the power plant boiler.

Abstract: A hydraulic system for a rotary implement, including an oil tank, a main pump, a control valve, and a rotary motor is provided. The oil tank is connected to an oil suction port of the main pump; an oil outlet of the main pump is connected to a P port of the control valve; a T port of the control valve is interconnected with the oil tank; and A and B ports of the control valve are connected to both ends of the rotary motor. The control valve includes a compensation valve connected to the P port and the T port, an electric proportional valve connected to the P port and the compensation valve, and an electromagnetic reversing valve connected to the compensation valve, the T port and the B port.

Abstract: A cleaning method and a cleaning tool for a negative-pressure component for battery formation are provided. The cleaning tool includes a liquid storage tank for storing a cleaning liquid, a power member connected with the liquid storage tank, a storage cup, and a liquid guide member. The storage cup is communicated with the negative-pressure component through the guide member. The cleaning tool has a first pipeline defining a flow from the liquid storage tank to the storage cup. The power member provides power for the flow of the cleaning liquid in the first pipeline to inject the cleaning liquid in the liquid storage tank into the storage cup. The cleaning liquid is sucked into the negative-pressure component from the storage cup by an existing negative-pressure power source of the negative-pressure component. Air sucked by the negative-pressure power source is mixed with the cleaning liquid in the negative-pressure component.

Abstract: An electrical system can include an isolated bidirectional converter (having an input couplable to a grid connection and an output couplable to a battery) and an isolated converter (having an input coupled to the input of the isolated bidirectional converter and couplable to the grid connection, with an AC output coupled to a convenience outlet). The electrical system can further include a controller that controls operation of the converters to operate in one of a plurality of modes including a charging mode in which the isolated bidirectional converter operates in a forward direction to charge the battery and the non-isolated converter powers the convenience outlet from the grid connection, and a non-charging mode in which the isolated bidirectional converter operates in a reverse direction to power the non-isolated converter from the battery and the non-isolated converter powers the convenience outlet.

Abstract: A mannose derivative is an isonitrile-containing mannose derivative of formula (I), including different linking groups X: A radioactive preparation is provided, including a radiolabeled compound formed by radiolabeling the mannose derivative with a radionuclide. An application of the radioactive preparation in the diagnosis and treatment of tumors is also provided.

Abstract: An isolated switching converter can include an inverting bridge, a transformer, a rectifying bridge, and control circuitry. The inverting bridge can receive an input voltage and deliver an output voltage to the transformer primary windings. The inverting bridge can include a plurality of half bridges cascaded across the input voltage. Each half bridge can include an input capacitor; upper and lower switches coupled across the input capacitor and connected at a switch node; and a DC blocking capacitor coupled between the switch node and a primary winding terminal. The rectifying bridge can have an input coupled to the secondary windings of the transformer and can deliver an output voltage of the isolated switching converter. The control circuitry can monitor inverter feedback signal(s) and generate phase staggered inverter drive signal(s). The control circuitry can also monitor rectifier feedback signal(s) and generate rectifier drive signals that operate the rectifying bridge.

Abstract: This disclosure describes, in part, systems and techniques for monitoring linkage joints of machines, such as earth-moving machines, using on-board sensors of the machines to identify linkage joints at risk of galling. The systems and techniques involve gathering sensor data and determining a galling risk score for each linkage joint. The galling risk score may then be used to alert an operator and/or maintenance system to determine when to take remedial action and/or perform maintenance while also avoiding costly downtime from galling failures.

Abstract: A system and method are provided for reconstructing 3-D point cloud. A light source generates light that is received by a polarization field generator, which generates a polarization field that illuminates the target object being imaged such that each outgoing ray has a unique polarization state. A camera captures images of the illuminated target object and the captured images are received by a processor that: (1) performs a polarization field decoding algorithm that decodes the polarization field to obtain a set of incident rays; (2) performs a camera ray decoding algorithm to obtain a set of camera rays; (3) performs a ray-ray intersection algorithm that determines intersection points where the incident rays and the camera rays intersect; and (4) performs a 3-D reconstruction algorithm that uses the set of incident rays, the set of camera rays and the intersection points to reconstruct a 3-D point cloud of the target object.

Abstract: The disclosure relates to the technical field of communications, and in particular, to a method for establishing a communication connection after a device is offline and a smart home system. The method for establishing the communication connection after the device is offline comprises: whether a first device is in an offline state in a Wi-Fi network under a wireless router is determined; when the first device is in the offline state, the first device is connected to at least one second device in Wi-Fi connection with the wireless router; and the first device establishes a communication connection with the wireless router by means of the second device. According to the method provided by the disclosure, an offline terminal can establish a communication connection with the wireless router by means of other terminals under the wireless router.

Abstract: A hydraulic system for a rotary implement, including an oil tank, a main pump, a control valve, and a rotary motor is provided. The oil tank is connected to an oil suction port of the main pump; an oil outlet of the main pump is connected to a P port of the control valve; a T port of the control valve is interconnected with the oil tank; and A and B ports of the control valve are connected to both ends of the rotary motor. The control valve includes a compensation valve connected to the P port and the T port, an electric proportional valve connected to the P port and the compensation valve, and an electromagnetic reversing valve connected to the compensation valve, the T port and the B port.

Abstract: Systems and methods for current sensing are described. For example, a system may include a transformer including a winding that connects a first tap and a second tap; a circuit board; a first trace on a layer of the circuit board, wherein the first trace connects the first tap to a rectifier; a coil including one or more turns of trace on the layer of the circuit board, adjacent to the first trace; and a measurement circuit configured to estimate current flowing in the first trace based on voltage across the coil.

Abstract: A walking power control system for wolfberry picking, including a frame, a turntable, rotating rods, first gears, second gear, gear racks, supporting rods, hydraulic motors, a front traveling wheel, a left traveling wheel and a right traveling wheel. Hydraulic motors rotate to drives three traveling wheels to rotate, thereby driving the frame to move, when it is necessary to turn, a turntable is rotated, the turntable rotates to drive two first gears to rotate, and the two first gears rotate to drive the supporting rods to rotate, thereby driving the left traveling wheel and the right traveling wheel to rotate, so that the traveling direction of the frame is changed.

Abstract: Operating a battery charger having an AC side stacked half bridge configuration coupled to a primary winding of a transformer and a DC side stacked half bridge configuration coupled to a secondary winding of the transformer to provide heating can include either operating the AC side stacked half bridges to provide a current path through the primary winding that does not include an AC source or operating the DC side stacked half bridges to provide a current path through the secondary winding that does not include a battery. In the former case, operation can include operating the DC side stacked half bridges to alternate between switching states that selectively couple a battery to the secondary winding of the transformer. In the latter case, operation can include operating the AC side stacked half bridges to alternate between switching states that selectively couple the AC source to the primary winding.

Abstract: A battery charging system can include a first charger module having a first AC side couplable to an AC source and a first DC side couplable to a battery and first control circuitry that operates the first charger to charge or discharge the battery; and a second charger module having a second AC side couplable to the AC source and a second DC side couplable to the battery and second control circuitry that operates the second charger to generate heat, wherein: if the first charger module is charging the battery from the AC source, the second control circuitry operates the second charger to generate heat without delivering charging current to the battery; and if the second charger is discharging the battery to the AC source, the second control circuitry operates the second charger to generate heat without delivering current to the AC source.

Abstract: A power conversion system can include at least one stacked half bridge converter that further includes a first half bridge further comprising two switching devices in a half bridge configuration and a first capacitor coupled thereacross and a second half bridge further comprising two switching devices in a half bridge configuration and a second capacitor coupled thereacross. The at least one stacked half bridge converter can be disposed between an input of the power conversion system and an output of the power conversion system. The power conversion system can further include a transformer coupled to the at least one stacked half bridge converter by a blocking capacitor and control circuitry that operates the switching devices of the at least one stacked half bridge converter as a switched capacitor converter using the blocking capacitor as a flying capacitor to equalize charge between the first and second capacitors.

Abstract: An electrical system can include a first bidirectional AC-DC converter having an input couplable to a grid connection and an output couplable to a battery and a second bidirectional AC-DC converter having an input couplable to the grid connection or a convenience outlet and an output couplable to the battery. The electrical system can further include a controller that controls the first and second converters to operate in a plurality of modes including a two-stage charging mode in which the first and second converters operate in a forward direction to charge the battery, a single-stage charging mode in which the first converter operates in a forward direction to charge the battery and the second converter operates in a reverse direction to power the convenience outlet, and a non-charging mode in which the first converter is idle and the second converter operates in a reverse direction to power the convenience outlet.

Abstract: This disclosure relates to a radiation-curable composition comprising (A) at least one water-soluble monofunctional ethylenically unsaturated monomer; (B) at least one water-soluble non-curable component, wherein the weighted average melting point of component (B) is more than 22° C. preferably more than 25° C.; and (C) at least one photoinitiator.

Abstract: An electrical system can include an isolated bidirectional converter (having an input couplable to a grid connection and an output couplable to a battery) and an isolated converter (having an input coupled to the input of the isolated bidirectional converter and couplable to the grid connection, with an AC output coupled to a convenience outlet). The electrical system can further include a controller that controls operation of the converters to operate in one of a plurality of modes including a charging mode in which the isolated bidirectional converter operates in a forward direction to charge the battery and the non-isolated converter powers the convenience outlet from the grid connection, and a non-charging mode in which the isolated bidirectional converter operates in a reverse direction to power the non-isolated converter from the battery and the non-isolated converter powers the convenience outlet.

Abstract: Described herein are packages for orienting and cooling polyesters during a sterilization process, and containers for storing, transporting, and cooling the package. Also described herein are methods of sterilizing polyesters.

Abstract: A mannose derivative is an isonitrile-containing mannose derivative of formula (I), including different linking groups X: A radioactive preparation is provided, including a radiolabeled compound formed by radiolabeling the mannose derivative with a radionuclide. An application of the radioactive preparation in the diagnosis and treatment of tumors is also provided.