Abstract: A line protection method and system for wind farm connected to flexible DC system involves: obtaining high frequency components of voltage and current at protection installations on both sides of a transmission line, when a fault of the transmission line of a direct drive wind field connected to a flexible DC system is monitored; obtaining 1-mode transient action impedance difference of the transmission line, based on the high-frequency components of voltage and current at the protection installations on both sides of the transmission line; determining whether a fault inside the area of the transmission line occurs, based on the 1-mode transient action impedance difference and fault identification criterion of the transmission line, and starting the protection action of the transmission line if it is determined that the fault inside the area of the transmission line occurs.

Abstract: This application describes a motor that includes a housing, an output shaft, a conductive bearing, and a conductive component. The output shaft is disposed in the housing. A positioning hole is disposed on an end face of a first end of the output shaft, and the positioning hole is disposed coaxially with the output shaft. The conductive bearing is disposed in the positioning hole, and includes an inner ring, and an outer ring that is fixedly connected to the output shaft. One end of the conductive component is fixedly connected to the inner ring of the conductive bearing, and the other end is connected to the housing. In this application, the motor can output, by using the conductive bearing and the conductive component, charges accumulated in the output shaft, to eliminate a generated common-mode voltage.

Abstract: A portable oropharyngeal swab smart collection device, which includes a collection device body, a remote control module, and a visual display unit, where a main control unit and an execution unit and a visual unit which are electrically connected with the main control unit respectively are arranged on the collection device body; a detachable oropharyngeal swab collector is arranged on the execution unit; the remote control module includes remote operation equipment which is in communication connection with the main control unit; and the visual display unit is in communication connection with the main control unit and the visual unit. The portable oropharyngeal swab smart collection device of the present disclosure can implement a collection by a oropharyngeal swab through remote control, rather than a face-to-face artificial collection by the oropharyngeal swab by a medical staff to a suspected patient with an infectious disease.

Abstract: This application describes a motor that includes a housing, an output shaft, a conductive bearing, and a conductive component. The output shaft is disposed in the housing. A positioning hole is disposed on an end face of a first end of the output shaft, and the positioning hole is disposed coaxially with the output shaft. The conductive bearing is disposed in the positioning hole, and includes an inner ring, and an outer ring that is fixedly connected to the output shaft. One end of the conductive component is fixedly connected to the inner ring of the conductive bearing, and the other end is connected to the housing. In this application, the motor can output, by using the conductive bearing and the conductive component, charges accumulated in the output shaft, to eliminate a generated common-mode voltage.

Abstract: A method of treating neurodegeneration in a subject that includes administering a non-invasive tactile stimulus having a stimulus frequency of about 30 Hz to about 50 Hz to a subject to induce synchronized gamma oscillations in at least one portion of the peripheral nervous system of the subject, of the spinal cord of the subject, or both.

Abstract: A transmission operating mechanism includes an operating housing, wherein an inner shifting shaft is provided in the operating housing, and the operating housing is provided with, from left to right, a first position-limiting structure installation hole, a shifting block installation cavity, a second position-limiting structure installation hole and a balancing spring installation cavity; and a shifting block is installed in the shifting block installation cavity and is connected to the inner shifting shaft via a shifting block positioning pin. The spatial position of the operating housing is fully utilized to effectively arrange each functional component, and the requirement for modification is fully considered within the limited dimensional range. Therefore, various operation modes may be achieved by simply providing several modified parts without changing the operating housing.

Abstract: A transmission operating mechanism includes an operating housing, wherein an inner shifting shaft is provided in the operating housing, and the operating housing is provided with, from left to right, a first position-limiting structure installation hole, a shifting block installation cavity, a second position-limiting structure installation hole and a balancing spring installation cavity; and a shifting block is installed in the shifting block installation cavity and is connected to the inner shifting shaft via a shifting block positioning pin. According to the present application, the spatial position of the operating housing is fully utilized to effectively arrange each functional component, and the requirement for modification is fully considered within the limited dimensional range, therefore, various operation modes may be achieved by simply providing several modified parts without changing the operating housing.