Abstract: The present disclosure provides a two-stage cavitation generator for organic wastewater treatment, including a shrouded impeller, a stator, and a rotor. The shrouded impeller includes a front cover plate, blades, and a rear cover plate. Several blades are evenly distributed between the front cover plate and the rear cover plate. A working surface of the blade is an arc surface, and a back of the blade protrudes locally, so that a flow channel between the back of the blade and a working surface of its adjacent blade is narrowed locally, forming a throat structure. An outlet of the shrouded impeller is provided with the stator and the rotor, and the stator is located at an outer edge of the front cover plate and fixed on an inner wall of a volute. The rotor is mounted on the rear cover plate.

Abstract: A circuit wiring determining method includes: obtaining information used to describe a port and a pin; determining a plurality of candidate connection paths based on the information about the port and the pin; obtaining a cost value of each candidate connection path by using a machine learning model, where the cost value indicates impact of the candidate connection path on a total quantity of connection paths between a plurality of ports and a plurality of pins; and determining at least one target connection path from the plurality of candidate connection paths based on the cost value. In this application, the cost value of the candidate connection path is effectively evaluated by using the machine learning model, and a preferred target connection path is determined based on the cost value, to increase a quantity of connections between the ports and the pins of an entire circuit.

Abstract: A virus lysis and nucleic acid preservation solution is disclosed, including the following components: isopropanol or ethyl alcohol, guanidinium chloride, tri (hydroxymethyl) aminomethane hydrochloride, and ethylenediaminetetraacetic acid. Furthermore, a kit including the virus lysis and nucleic acid preservation solution, a method for preserving viral nucleic acid, and a method for extracting a viral nucleic acid are also provided. The virus lysis and nucleic acid preservation solution of the present invention has the functions of lysing virus and preserving nucleic acid in the lysed virus samples, and it is compatible with lysis buffers, wash buffers, elution buffers, etc. in all kinds of viral nucleic acid extraction kit commonly available in the market.

Abstract: The present invention relates to a method for controlling an air conditioning outlet of a vehicle, including: collecting an ambient temperature and a user set temperature; determining a target value according to the ambient temperature and the user set temperature; determining a target working mode from a plurality of preset working modes of an air conditioning outlet according to the target value, the working mode including a preset air outlet direction; and enabling the air conditioning outlet to work in the target working mode.

Abstract: The present invention relates to an in-vehicle air conditioning outlet state indicator and a vehicle, including: an air conditioning outlet of which an air outlet direction is changeable; and an interior trim panel provided with an indication unit displaying, in a working state, an indication mark used for indicating a current air outlet direction of the air conditioning outlet, in which when the air outlet direction of the air conditioning outlet changes, the indication unit also changes, or when the indication mark changes, the air outlet direction of the air conditioning outlet also changes.

Abstract: A Bluetooth communication method, a Bluetooth communication device, and a Bluetooth communication system are provided. The Bluetooth communication method comprises: segmenting a first signal data and performing a compression-encoding to construct a plurality of first signal data packets; constructing a plurality of first-standard Bluetooth packets, and detecting whether one of the plurality of first-standard Bluetooth packets is a command Bluetooth packet. If the first-standard Bluetooth packet is the command Bluetooth packet, transmitting the first-standard Bluetooth packet directly, and if not, replacing a valid information in the first-standard Bluetooth packet with one corresponding first signal data packet which is in the same data transmitting window as the first-standard Bluetooth packet for transmitting. A second terminal of the point-to-point link obtains the corresponding first signal data by decoding the first-standard Bluetooth packet.

Abstract: A thin film transistor includes a semiconductor layer, a gate insulating layer, a gate, a source and a drain. The semiconductor layer has a first heavily doped region, a second heavily doped region, a third heavily doped region, an intrinsic region and a lightly doped region. The gate shields the intrinsic region and a first portion of the first heavily doped region. A second portion of the first heavily doped region is located outside an area of the gate. The source and the drain are electrically connected to the second heavily doped region and the third heavily doped region respectively. The source and the drain are arranged in a first direction. The first portion of the first heavily doped region and the gate have an overlapping region. A length of the overlapping region in the first direction is greater than a length of the intrinsic region in the first direction.

Abstract: Exemplary power semiconductor devices configured with one or more conductivity-controlled device regions and structures that can actively modulate, via an additional conductivity-controlled terminal, the conductivity characteristics of the power device. Through this active modulation and device structure, the conductivity and thus resistance of the power semiconductor device can be altered to substantially reduce losses (switching and conduction) of the device during operations. The exemplary conductivity-controlled power semiconductor devices (also referred to herein as “CCBT”) can provide a substantial energy saving as well as reduce the thermal regulation requirements for any power application using additional conductivity-controlled circuitries. The conductivity-controlled device regions and structures can be applied to silicon-based power electronics, wide-bandgap power electronics, and any other classes of materials for power electronic devices.

Abstract: Highly selective targeting moieties and compositions comprising the targeting moieties are described herein to efficiently transduce endothelial cell of the central nervous system vasculature. Embodiments include use and delivery of the targeting moieties and compositions to selectively direct delivery of cargo.

Abstract: A thin film transistor includes a semiconductor layer, a gate, a source and a drain. The semiconductor layer includes a first heavily doped region, a second heavily doped region, a bridge region, a first channel region, a second channel region, a first lightly doped region and a second lightly doped region. The first lightly doped region connects the bridge region and the first channel region. The second lightly doped region connects the bridge region and the second channel region. The doping concentration of the bridge region is greater than that of the first lightly doped region and the second lightly doped region. The gate overlaps the bridge region, the first channel region, the second channel region, the first lightly doped region and the second lightly doped region. The source and the drain are electrically connected to the first heavily doped region and the second heavily doped region respectively.

Abstract: A Bluetooth communication method, a Bluetooth communication device, and a Bluetooth communication system are provided. The Bluetooth communication method comprises: segmenting a first signal data based on a length of a first time slice, performing a compression-encoding to construct a plurality of first private-chain packets; constructing and transmitting a plurality of first-standard Bluetooth packets, and transmitting one of the plurality of first private-chain packets to a second terminal of a device of the link in an idle time of a transmission slot in which one corresponding first-standard Bluetooth packet is transmitted, so that the second terminal of the device obtains the first signal data by decoding the corresponding first private-chain packet. The above method transmits the signal data in the idle time, thereby improving the efficiency of signal transmission and reducing communication latency.

Abstract: A Bluetooth communication method, a Bluetooth communication device, and a Bluetooth communication system are provided. The Bluetooth communication method comprises: segmenting a first signal data and performing a compression-encoding to construct a plurality of first signal data packets; constructing a plurality of first-standard Bluetooth packets, and detecting whether one of the plurality of first-standard Bluetooth packets is a command Bluetooth packet. If the first-standard Bluetooth packet is the command Bluetooth packet, transmitting the first-standard Bluetooth packet directly, and if not, replacing a valid information in the first-standard Bluetooth packet with one corresponding first signal data packet which is in the same data transmitting window as the first-standard Bluetooth packet for transmitting. A second terminal of the point-to-point link obtains the corresponding first signal data by decoding the first-standard Bluetooth packet.

Abstract: A data transmission method and a related apparatus. A sending device performs binary phase shift keying BPSK mapping on a to-be-transmitted bit sequence to obtain a first sequence. The sending device performs coding modulation on the first sequence based on a generator matrix or a first sub-matrix including some rows of the generator matrix, to obtain a symbol sequence. The sending device sends the symbol sequence to a receiving device through a channel.

Abstract: A data processing method includes: generating a service serial number for a target service according to a preset naming rule; obtaining service data of the target service; obtaining a target data table from a plurality of pre-configured data tables, according to the service serial number; and storing the service data to the target data table.

Abstract: Embodiments of the present disclosure provide a method and system for positioning a robot and adjusting a posture. The method may include obtaining a first image and a second image of a target object. The first image may be captured using an image capturing apparatus, and the second image may be captured using a medical imaging device. The method may also include determining at least one target region corresponding to at least one target portion of the target object from the first image. The at least one target portion may be less affected by physiological motions than other portions. The method may further include determining positioning information of the robot based on the at least one target region and the second image.

Abstract: This application provides a surgical robot control method, a computer device, and a surgical robot system. The surgical robot control method includes: receiving a user demand, and generating an interactive control command; generating a motion control command according to the interactive control command; and controlling a terminal of a mechanical arm to perform the motion control command. The motion control command includes controlling the terminal of the mechanical arm to act in accordance with a plurality of motion modes. The surgical robot control method may control the terminal of the mechanical arm to act in accordance with the plurality of motion modes through the motion control command, realize different motion schemes in various clinical application scenarios, and realize controlling the terminal of the mechanical arm to be flexibly switched between the plurality of motion modes in any application scenario through the interactive control command.

Abstract: Various examples are provided related to direct current circuit breakers and their control methods. In one example, among others, a hybrid direct current circuit breaker (DCCB) includes an ultrafast mechanical switch (UFMS) connected in series with a commutating switch (CS) or auxiliary circuit breaker (ACB); a main breaker (MB) including a series of ? semiconductor switching stages in parallel with the UFMS and CS or ACB; and control circuitry that can turn off individual switching stages in a defined order in response to opening contacts of the UFMS. The switching stages can be turned off based upon a dielectric strength across the contacts as they open. In another example, a method includes opening contacts of an UFMS connected in series with a CS or ACB; and turning off individual switching stages of a series of ? semiconductor switching stages connected across the UFMS and the CS or ACB.

Abstract: Method and apparatus include a first stage converter configured to generate a half sine wave, and a second stage converter in electrical communication with the first stage converter and configured to transform the half sine wave into a power signal. The second stage converter may further supply the power signal to an electrical grid. In one example, the second stage converter may include an isolated, unregulated, resonant direct current/alternating current (DC/AC) converter.

Abstract: A method and apparatus include a primary transformer coil, a secondary transformer coil, and a center tapped inductor coupled to the secondary transformer coil. A first switch may be in electrical communication with the center tapped inductor and may be configured to affect the first output voltage. A second switch may be in electrical communication with the center tapped inductor and may be configured to affect the second output voltage. In a particular example with an analog current (AC) output voltage, the two output voltages are out of phase to each other. In a direct current (DC) implementation, the transformer may be operated to output a positive and a negative output voltage. The apparatus may function as a resonant converter, or may operate in non-resonant mode. In one implementation, an H bridge may provide reactive power support. An inductor filter may be in electrical communication with the secondary transformer coil.

Abstract: Method and apparatus include a circuit having a duty cycle and interleaving modulation configured to realize high density and efficient energy transfer. The circuit may efficiently achieve higher step-down voltage ratios with fewer electrical components. For example, as few as seven electrical devices, such as switches and diodes, may be used to realize at least a four-to-one conversion ratio. The high density of the circuit is advantageous to meet shrinking space demands A modulator may interleave signals sent to the electrical components (e.g., switching devices via driver circuitry). The driver signals may include a duty cycle of 1/(nc+1), where nc is (n?1)/3, and n is the number of devices.