Abstract: The present invention provides a novel and highly stereoselective process for preparing gemcitabine, which is suitable for industrial production, wherein, it includes the following reactions. Additionally, the invention discloses the key intermediates. The definition for the groups of G1, G2, G3, G4, and G5 are described in the specification.

Abstract: The present invention provides a novel and highly stereoselective process for preparing gemcitabine, which is suitable for industrial production, wherein, it includes the following reactions. Additionally, the invention discloses the key intermediates. The definition for the groups of G1, G2, G3, G4, and G5 are described in the specification.

Abstract: A tire pressure gauge includes a holder, an air intake seat, and a detection device coupled with the air intake seat. The holder and air intake seat have respectively a first positioning ring and a second positioning ring. A fastening and unfastening tool of the tire pressure gauge includes an outer barrel and an inner barrel held in the outer barrel. The outer barrel has a first anchor portion to latch the first positioning ring. The inner barrel has a second anchor portion to latch the second positioning ring. The outer barrel and inner barrel respectively drive the holder and air intake seat to be fastened to an air nozzle of a vehicle tire, and the holder and air intake seat are butted tightly to allow the tire pressure gauge to be securely installed on the air nozzle of any type of vehicles through the fastening and unfastening tool.

Abstract: An integrated circuit for driving high-voltage LED lamps is applied to a rectified alternative current (AC) power and a plurality of LED stacks. The integrated circuit includes a control unit, a plurality of current-clamping units which electrically connect to the control unit and the LED stacks respectively, and a plurality of current-sensing units which electrically connect to the current-clamping units and the control unit. When the rectified power is switched on, the current-sensing unit constantly monitors the electrical current flowing through the respective current-clamping unit and feeds back the monitored data to the control unit. The control unit sequentially switches on or off the current-clamping units according to the combinatorial logic state of the monitored data.

Abstract: A method to reduce vehicular sensitivity to torsional smooth road shake (SRS) at the steering wheel provided by selectively increasing reverse driven-impedance of the steering system via an effective dynamic tuned vibration absorber comprising the existing power steering motor inertia supported on the torsional stiffness of the gearing to the rack in the case of a REPS system, or of the column rotary shaft in the case of a CEPS system.

Abstract: An integrated circuit for driving high-voltage LED lamps is applied to a rectified alternative current (AC) power and a plurality of LED stacks. The integrated circuit includes a control unit, a plurality of current-clamping units which electrically connect to the control unit and the LED stacks respectively, and a plurality of current-sensing units which electrically connect to the current-clamping units and the control unit. When the rectified power is switched on, the current-sensing unit constantly monitors the electrical current flowing through the respective current-clamping unit and feeds back the monitored data to the control unit. The control unit sequentially switches on or off the current-clamping units according to the combinatorial logic state of the monitored data.

Abstract: A method to reduce vehicular sensitivity to torsional smooth road shake (SRS) at the steering wheel provided by selectively increasing reverse driven-impedance of the steering system via an effective dynamic tuned vibration absorber comprising the existing power steering motor inertia supported on the torsional stiffness of the gearing to the rack in the case of a REPS system, or of the column rotary shaft in the case of a CEPS system.

Abstract: An electric steering lock for a motorcycle includes a housing, a transmission assembly, a spindle, and a circuit board. The transmission assembly has an actuator, a first gear, a second gear and a sliding block each arranged within the housing in transmissive engagement with each other. The spindle is assembled with the sliding block and acts in the second space. The circuit board is arranged on the bottom of the housing. The primary control chip of the motorcycle controls the circuit board to make the transmission assembly to drive the spindle to move accordingly. The sliding block touches an inner wall of the casing to make it unable to move forwards or backwards any more. The current of the actuator at this time is larger than that in its normal operation. The rotation of the actuator is ceased by the circuit board when a variation in current of the actuator is detected by the circuit board.

Abstract: An electric steering lock for a motorcycle includes a housing, a transmission assembly, a spindle, a set of sensors and a circuit board. The transmission assembly has an actuator, a first gear, a second gear and a sliding block each arranged within the housing in transmissive engagement with each other. The spindle is assembled with the sliding block and acts in the housing. A primary control chip of the motorcycle controls the circuit board to make the transmission assembly to drive the spindle to move accordingly. The circuit board determines that the spindle is locked and reaches a predetermined position if the sliding block presses the front sensor, and the circuit board determined that the spindle is unlocked and reaches a predetermined position if the sliding block presses the rear sensor.

Abstract: The present invention provides a novel and highly stereoselective process for preparing gemcitabine, which is suitable for industrial production, wherein, it includes the following reactions. Additionally, the invention discloses the key intermediates. The definition for the groups of G1, G2, G3, G4, and G5 are described in the specification.

Abstract: A stage assembly (220) that moves a work piece (200) about a first axis and along a first axis includes a first stage (238), a second stage (240) that retains the work piece (200), a second mover assembly (244), a measurement system, and an initialization system (1081A). The second mover assembly (244) moves the second stage (240) relative to the first stage (238) about the first axis. The measurement system (22) monitors the position of the second stage (240) about the first axis when the second stage (240) is positioned within a working range about the first axis. The initialization system (1081A) facilitates movement of the second stage (240) about the first axis when the second stage (240) is rotated about the first axis outside the working range. The second mover assembly (244) can include a mover (255) and a dampener (410) that reduces the transmission of vibration from the first stage (238) to the second stage (240).

Abstract: A stage assembly (220) that moves a work piece (200) about a first axis and along a first axis includes a first stage (238), a second stage (240) that retains the work piece (200), a second mover assembly (244), a measurement system, and an initialization system (1081A). The second mover assembly (244) moves the second stage (240) relative to the first stage (238) about the first axis. The measurement system (22) monitors the position of the second stage (240) about the first axis when the second stage (240) is positioned within a working range about the first axis. The initialization system (1081A) facilitates movement of the second stage (240) about the first axis when the second stage (240) is rotated about the first axis outside the working range. The second mover assembly (244) can include a mover (255) and a dampener (410) that reduces the transmission of vibration from the first stage (238) to the second stage (240).

Abstract: “Hexapod” mountings are disclosed for use with optical elements. An exemplary mounting includes a base, a platform that is movable relative to the base, and six legs having nominally identical length. Three pairs of legs, having substantially equal stiffness, extend between the base and platform and support the platform relative to the base. In each pair of legs, respective first ends are coupled together in a ?-shaped manner forming a respective apex. Respective second ends are splayed relative to the apex, desirably forming an angle of substantially 109.5° at the apex. The apices are mounted equidistantly from each other on a circle on the platform. The respective second ends of the pairs of legs are mounted at respective locations on a circle on the base. The axes of each pair of legs define a respective leg plane substantially perpendicular to the base plane. Each leg has an actuator that, when energized, changes a length of the respective leg.

Abstract: A heat exchanger includes three plates disposed one above the other or superposed with each other, for forming one or more conduits between the upper and the middle plates and for forming one or more ducts between the middle and the lower plates, and for forming one or more channels below the lower plate, the plates include an opening communicating and coupled to the conduits and the ducts for receiving a medium, and the include an orifice communicating and coupled to the channel formed below the lower plate for receiving another medium and for separating the media from each other, and for allowing the media to have different flowing quantity.

Abstract: A heat exchanger includes a number of plate sets disposed one above the other or superposed with each other, and each plate sets includes an upper plate and a lower plate for forming one or more conduits between the upper and the lower plates, and for forming one or more ducts between the lower and the upper plates of different plates, the plates include an opening communicating and coupled to the conduits for receiving one heat medium, and an orifice communicating and coupled to the ducts for receiving a different heat medium and for separating the heat media from each other, and for allowing the heat media to have different flowing quantity from each other.

Abstract: A stage assembly (220) that moves a work piece (200) about a first axis and along a first axis includes a first stage (238), a second stage (240) that retains the work piece (200), a second mover assembly (244), a measurement system, and an initialization system (1081A). The second mover assembly (244) moves the second stage (240) relative to the first stage (238) about the first axis. The measurement system (22) monitors the position of the second stage (240) about the first axis when the second stage (240) is positioned within a working range about the first axis. The initialization system (1081A) facilitates movement of the second stage (240) about the first axis when the second stage (240) is rotated about the first axis outside the working range. The second mover assembly (244) can include a mover (255) and a dampener (410) that reduces the transmission of vibration from the first stage (238) to the second stage (240).

Abstract: A power tool includes a tool housing, a motor device, and a power module. The tool housing accommodates removably a rechargeable battery unit. The motor device is mounted in the tool housing. The power module is coupled to the motor device for supplying electric power thereto, is responsive to an external power signal for permitting charging of the rechargeable battery unit simultaneous with supply of the electric power to the motor device when the rechargeable battery unit is disposed in the tool housing, and permits supply of the electric power to the motor device through the rechargeable battery unit in the absence of the external power signal.

Abstract: A method of forming a non-oxidized WSix layer on a semiconductor wafer, including the following steps. A semiconductor wafer having a silicon substrate is provided within a CVD tool. A WSix layer is formed over the silicon substrate. An SiN layer is formed upon the WSix layer in absence of O2; whereby the WSix layer is non-oxidized.

Abstract: The target of a color CRT includes a plurality of color stripe triads which are oriented on a (111) surface parallel to the <112> crystallographic direction. The pattern of the stripe triads is etched using a SiO.sub.2 etch mask deposited directly on the YAG and an etchant comprising a hot mixture of sulfuric and phosphoric acids.