Abstract: A wireless power transmitter can include a wireless power transfer coil designed to magnetically couple with a corresponding coil in a wireless power receiver to facilitate wireless power transfer from the wireless power transmitter to the wireless power receiver, a power converter configured to drive the wireless power transfer coil, and control and communications circuitry coupled to the wireless power transfer coil and the power converter. The control and communications circuitry can be configured to operate the power converter to drive the wireless power transfer coil so as to transfer power to the wireless power receiver in accordance with a negotiated power transfer. Simultaneously during power transfer, the control and communications circuitry can send a polling signal to detect a foreign object including a wireless transponder and reduce or stop wireless power transfer upon receiving a response to the polling signal from a foreign object including a wireless transponder.

Abstract: The disclosure belongs to the technical field of support structures, and in particular relates to a detachable five-star base. In the disclosure, the clamping plate, the arc-shaped groove plate and the support block are arranged on the center block, and the connecting groove, the arc-shaped connecting plate and the jacking block are arranged on the detachable foot to achieve the effective disassembly and assembly of the five-star foot. The disclosure has a reasonable and effective detachable structure of the five-star foot, the detachable feet are easy to be engaged and positioned before disassembly and assembly, the resistance is moderate, the operation is convenient, the support strength after installation is large. The friction and fixing effect between the detachable feet and the center block is good, the detachable feet are not easy to rotate and fall apart, and the number of detachable feet can be adjustable.

Abstract: The disclosure belongs to the technical field of support structures, and in particular relates to a detachable five-star base. In the disclosure, the clamping plate, the arc-shaped groove plate and the support block are arranged on the center block, and the connecting groove, the arc-shaped connecting plate and the jacking block are arranged on the detachable foot to achieve the effective disassembly and assembly of the five-star foot. The disclosure has a reasonable and effective detachable structure of the five-star foot, the detachable feet are easy to be engaged and positioned before disassembly and assembly, the resistance is moderate, the operation is convenient, the support strength after installation is large. The friction and fixing effect between the detachable feet and the center block is good, the detachable feet are not easy to rotate and fall apart, and the number of detachable feet can be adjustable.

Abstract: The present invention discloses a high-speed counter-current chromatograph unreeled by a gear ring, including an upper disc, a middle disc and a lower disc, wherein an unreeling gear ring coaxial with the middle disc is fixed above the middle disc, the lower disc is driven by a driving shaft to rotate, the unreeling gear ring is fixed, gear teeth of the unreeling gear ring are distributed on the inner ring thereof, multiple groups of gears engaged with the unreeling gear ring are arranged along the circumferential direction of the inner ring of the unreeling gear ring, gears between the adjacent groups are not engaged with each other, each group of gears includes two gears that are engaged with each other, wherein one gear drives a separation column, the other gear drives an unreeling shaft, the separation column is installed on a separation shaft, the upper ends of the unreeling shaft and the separation shaft are connected with the upper disc, and the lower ends are connected with the middle disc; meanwhile,

Abstract: Disclosed is a foldable five-star foot, comprising a center body and five legs; each one of the legs is provided with a first mounting block and a second mounting block; each one of the first mounting blocks corresponds to a first mounting groove; each one of the second mounting blocks corresponds to a second mounting groove; and the first and second mounting grooves are formed on the center body. The first mounting groove and the second mounting groove are internally provided with a pair of a first connecting block and a second connecting block; each one of the first connecting blocks is connected with each corresponding one of the first mounting blocks, and each one of the second connecting blocks is connected with each corresponding one of the second mounting blocks. The five-star foot is advantaged in simple and reliable structure, convenient folding, large application scope and easy popularization.

Abstract: Disclosed is a foldable five-star foot, comprising a center body and five legs; each one of the legs is provided with a first mounting block and a second mounting block; each one of the first mounting blocks corresponds to a first mounting groove; each one of the second mounting blocks corresponds to a second mounting groove; and the first and second mounting grooves are formed on the center body. The first mounting groove and the second mounting groove are internally provided with a pair of a first connecting block and a second connecting block; each one of the first connecting blocks is connected with each corresponding one of the first mounting blocks, and each one of the second connecting blocks is connected with each corresponding one of the second mounting blocks. The five-star foot is advantaged in simple and reliable structure, convenient folding, large application scope and easy popularization.

Abstract: The present invention discloses a high-speed counter-current chromatograph unreeled by a gear ring, including an upper disc, a middle disc and a lower disc, wherein an unreeling gear ring coaxial with the middle disc is fixed above the middle disc, the lower disc is driven by a driving shaft to rotate, the unreeling gear ring is fixed, gear teeth of the unreeling gear ring are distributed on the inner ring thereof, multiple groups of gears engaged with the unreeling gear ring are arranged along the circumferential direction of the inner ring of the unreeling gear ring, gears between the adjacent groups are not engaged with each other, each group of gears includes two gears that are engaged with each other, wherein one gear drives a separation column, the other gear drives an unreeling shaft, the separation column is installed on a separation shaft, the upper ends of the unreeling shaft and the separation shaft are connected with the upper disc, and the lower ends are connected with the middle disc; meanwhile,

Abstract: Disclosed are derivatives of protoberberine biological alkaloids or physiologically acceptable salts thereof produced by means of a derivative reaction of a source material of biological alkaline quaternary ammonium salts of protoberberine alkaloids, a preparation method for same and pharmaceutical uses thereof. The derivatives of protoberberine biological alkaloids or the physiologically acceptable salts thereof show activity inhibiting ulcerative colitis and can be used in the preparation of drugs for same.

Abstract: Disclosed are derivatives of protoberberine biological alkaloids or physiologically acceptable salts thereof produced by means of a derivative reaction of a source material of biological alkaline quaternary ammonium salts of protoberberine alkaloids, a preparation method for same and pharmaceutical uses thereof. The derivatives of protoberberine biological alkaloids or the physiologically acceptable salts thereof show activity inhibiting ulcerative colitis and can be used in the preparation of drugs for same.