Abstract: A sweeping assembly for a cleaning device, includes: a brush holder defining an accommodating cavity therein; a main brushroll accommodated in the accommodating cavity of the brush holder, the main brushroll including a cleaning part located at a middle portion of the main brushroll and a connecting part located at an end of the main brushroll, the connecting part being connected to the brush holder or a driver of the cleaning device; and an anti-winding structure arranged at the brush holder, and including a first end connected to the brush holder, and a second end abutting against the brushroll.

Abstract: A breathable, high-visibility garment comprising an apertured fabric and a non-occlusive, unsupported, retroreflective laminate that is adhesively bonded to an outer major surface of at least one region of the apertured fabric.

Abstract: An antenna that comprises a dielectric body and a feed arrangement. The dielectric body includes a first portion operable as a dielectric lens and a second portion operable as a dielectric resonator. The feed arrangement is operably coupled with the dielectric body for operating the antenna as a dielectric lens antenna and a dielectric resonator antenna.

Abstract: The present invention discloses glycopeptide compounds having activity of resisting drug-resistant bacteria, conforming to glycopeptide compounds represented by general formula (I), The present invention also provides a preparation method for and an application of the glycopeptide compounds. Upon testing, compared with a second-generation glycopeptide drug oritavancin, the glycopeptide antibiotic compounds have higher inhibition activity on drug-resistant bacterial strains, especially MRSA or VRE. Further testing shows that most of the glycopeptide compounds have safety higher than that of oritavancin and can be prepared into drugs for treating or preventing diseases caused by various bacterial infections, such as skin and soft tissue infections, meningitis, sepsis, pneumonia, arthritis, peritonitis, bronchitis, and empyema.

Abstract: The present invention provides a single-fed wideband circularly-polarized dielectric resonant antenna. The antenna includes a lower antenna portion configured as a twisted inverted-frustum having a twist angle ? between its top and bottom surfaces, wherein the twist angle ? is greater than zero degrees and less than 5 degrees. An upper antenna portion extends from the lower antenna portion top surface. The upper portion includes plural interleaved slabs of first and second dielectric materials having respective first and second dielectric constants, the interleaved slabs having a stepwise-varying height between adjacent slabs. The antenna may be mounted on a printed circuit substrate at a 45 degree angle to an excitation slot. The antenna may be compact and easily manufactured using 3-D printing techniques.

Abstract: A disc-type three-degree-of-freedom magnetic suspension switched reluctance motor includes a stator and a double-disc rotor. The stator includes an axial stator core, a permanent magnet ring, and a radial stator core coaxially connected to each other in sequence from outside to inside. Axial suspension teeth are distributed on two axial ends of the axial stator core, several axial torque teeth are evenly distributed between adjacent axial suspension teeth by axial magnetic isolation blocks, and axial suspension windings and axial torque windings are respectively wound on the axial suspension teeth and the axial torque teeth. Radial suspension teeth are distributed on the inner circumference of the radial stator core, radial torque teeth are evenly distributed between adjacent radial suspension teeth by a radial magnetic isolation block, and a radial suspension winding and a radial torque winding are respectively wound on the radial suspension teeth and the radial torque teeth.

Abstract: An external winding controlled two-degree-of-freedom bearing-free switched reluctance motor includes a stator and a rotor. An edge portion of the rotor includes rotor teeth. The stator includes an external winding and a stator core. The stator core includes four suspension teeth distributed in x and y directions on the same circumference of the radial outer side of the rotor and magnetism isolating bodies connected to two adjacent suspension teeth, each suspension tooth includes, along the axial direction of the rotor, a permanent magnet sheet and magnetically conductive sheets symmetrically connected to two sides of the permanent magnet sheet, torque teeth are connected to the inner walls of the magnetism isolating bodies, and torque windings are wound around the torque teeth. The external winding includes x-direction control cores connecting two suspension teeth in the x direction to form two x-direction symmetrical closed paths.

Abstract: A dielectric resonator antenna and a dielectric resonator antenna array. The dielectric resonator antenna includes a ground plane, a dielectric resonator element operably coupled with the ground plane, and a feed network operably coupled with the dielectric resonator element for exciting the dielectric resonator antenna. The dielectric resonator element includes a first portion with a first shape and a second portion with a second shape different from the first shape. The dielectric resonator antenna, when excited, is arranged to provide wide half-power beam-widths in both E-plane and H-plane.

Abstract: A dielectric resonator antenna and a dielectric resonator antenna array. The dielectric resonator antenna includes a ground plane, a dielectric resonator element operably coupled with the ground plane, and a feed network operably coupled with the dielectric resonator element for exciting the dielectric resonator antenna to provide a wideband omnidirectional response. The dielectric resonator element includes a plurality of portions, including, at least, an innermost portion and an outermost portion arranged around the innermost portion. The innermost portion has a first effective dielectric constant and outermost portion has a second, different effective dielectric constant.

Abstract: A dielectric resonator antenna and a dielectric resonator antenna array. The dielectric resonator antenna includes a ground plane, a dielectric resonator element operably coupled with the ground plane, and a feed network operably coupled with the dielectric resonator element for exciting the dielectric resonator antenna to provide a wideband omnidirectional response. The dielectric resonator element includes a plurality of portions, including, at least, an innermost portion and an outermost portion arranged around the innermost portion. The innermost portion has a first effective dielectric constant and outermost portion has a second, different effective dielectric constant.

Abstract: A dielectric resonator antenna and a dielectric resonator antenna array. The dielectric resonator antenna includes a ground plane, a dielectric resonator element operably coupled with the ground plane, and a feed network operably coupled with the dielectric resonator element for exciting the dielectric resonator antenna. The dielectric resonator element includes a first portion with a first shape and a second portion with a second shape different from the first shape. The dielectric resonator antenna, when excited, is arranged to provide wide half-power beam-widths in both E-plane and H-plane.

Abstract: An external winding controlled two-degree-of-freedom bearing-free switched reluctance motor includes a stator and a rotor. An edge portion of the rotor includes rotor teeth. The stator includes an external winding and a stator core. The stator core includes four suspension teeth distributed in x and y directions on the same circumference of the radial outer side of the rotor and magnetism isolating bodies connected to two adjacent suspension teeth, each suspension tooth includes, along the axial direction of the rotor, a permanent magnet sheet and magnetically conductive sheets symmetrically connected to two sides of the permanent magnet sheet, torque teeth are connected to the inner walls of the magnetism isolating bodies, and torque windings are wound around the torque teeth. The external winding includes x-direction control cores connecting two suspension teeth in the x direction to form two x-direction symmetrical closed paths.

Abstract: A disc-type three-degree-of-freedom magnetic suspension switched reluctance motor includes a stator and a double-disc rotor. The stator includes an axial stator core, a permanent magnet ring, and a radial stator core coaxially connected to each other in sequence from outside to inside. Axial suspension teeth are distributed on two axial ends of the axial stator core, several axial torque teeth are evenly distributed between adjacent axial suspension teeth by axial magnetic isolation blocks, and axial suspension windings and axial torque windings are respectively wound on the axial suspension teeth and the axial torque teeth. Radial suspension teeth are distributed on the inner circumference of the radial stator core, radial torque teeth are evenly distributed between adjacent radial suspension teeth by a radial magnetic isolation block, and a radial suspension winding and a radial torque winding are respectively wound on the radial suspension teeth and the radial torque teeth.

Abstract: The present invention discloses glycopeptide compounds having activity of resisting drug-resistant bacteria, conforming to glycopeptide compounds represented by general formula (I), The present invention also provides a preparation method for and an application of the glycopeptide compounds. Upon testing, compared with a second-generation glycopeptide drug oritavancin, the glycopeptide antibiotic compounds have higher inhibition activity on drug-resistant bacterial strains, especially MRSA or VRE. Further testing shows that most of the glycopeptide compounds have safety higher than that of oritavancin and can be prepared into drugs for treating or preventing diseases caused by various bacterial infections, such as skin and soft tissue infections, meningitis, sepsis, pneumonia, arthritis, peritonitis, bronchitis, and empyema.

Abstract: A fixture to enable correct positioning of components in surface mount technology (SMT) field includes a tray, a positioning mechanism, at least one first upper magnet, at least one second upper magnet, and at least one lower magnet. The tray has at least one positioning hole. The positioning mechanism includes a base member, at least one sliding assembly, and at least one positioning post. The sliding assembly is slidably mounted to the base member. The positioning post is mounted to the base member, and disposed in the positioning hole of the tray. The first upper magnet and the second upper magnet are attached to the tray. The lower magnet is attached to the sliding assembly. The tray and the positioning mechanism are repulsive when the lower magnet aligns with the first upper magnet but are attracted when the lower magnet aligns with the second upper magnet.

Abstract: A cart includes a frame body, a tray, a driving mechanism, and a transmission mechanism. The frame body includes a top portion, a bottom portion including a number of castors, and a number of connecting bars between the top portion and the bottom portion, which cooperatively defines a receiving space. The tray is configured to support a workpiece and to be slidably received in the receiving space. The transmission mechanism is connected between the tray and the driving mechanism to transmit the power of the driving mechanism to the tray to drive the tray to move in the receiving space.

Abstract: A latch assembly for securing two boards together includes a male section and a female section. The male section includes a base to be fixed to one board, a tab protruding from a first side surface of the base. The tab includes at least one latching portion protruding therefrom. The female section includes a support block fixed to the other one board and defining a chamber, a movable block slidably retained within the chamber of the support block, and the at least one elastic member is retained within the chamber. The movable block includes a stop portion capable of latching with the at least one latching portion when the movable block is retained in a securing position by the tab. The at least one elastic member applies a push force to the movable block to movably retain the movable block in the normal position.

Abstract: The present invention relates to a novel compound, 3-amino-2-hydroxy-4-phenylbutanoyl-valyl-isoleucine with structure showed below. The compound is prepared from fermentation culture Streptomyces parvus CGMCC No. 4027 and is active as inhibitor of aminopeptidase. It can be used for preparation of aminopeptidase inhibitor.

Abstract: A latch assembly for securing two boards together includes a male section and a female section. The male section includes a base to be fixed to one board, a tab protruding from a first side surface of the base. The tab includes at least one latching portion protruding therefrom. The female section includes a support block fixed to the other one board and defining a chamber, a movable block slidably retained within the chamber of the support block, and the at least one elastic member is retained within the chamber. The movable block includes a stop portion capable of latching with the at least one latching portion when the movable block is retained in a securing position by the tab. The at least one elastic member applies a push force to the movable block to movably retain the movable block in the normal position.