Abstract: A processing mechanism for machining a workpiece includes a fixing base, a driving member, a connecting member, a cutter and a spring. The driving member is positioned above the fixing base. The connecting member is coupled to the driving member. One end of the cutter is fixed to the connecting member, and the cutter can be driven to pass through the fixing base to machine the workpiece positioned under the fixing base. The spring is positioned between the connecting member and the fixing base. The spring is compressed when the driving member drives the cutter away from the fixing base to machine the workpiece, and the spring under compression biases the cutter back toward the fixing base. The disclosure also supplies a processing device using the processing mechanism.

Abstract: The present invention provides new protease resistant polypeptides, as well as compositions and methods for treating, ameliorating or preventing conditions related to joint damage, including acute joint injury and arthritis.

Abstract: Methods and apparatuses are provided for automatically controlling and stabilizing aspects of a scanning probe microscope (SPM), such as an atomic force microscope (AFM), using Peak Force Tapping (PFT) Mode. In an embodiment, a controller automatically controls periodic motion of a probe relative to a sample in response to a substantially instantaneous force determined and automatically controls a gain in a feedback loop. A gain control circuit automatically tunes a gain based on separation distances between a probe and a sample to facilitate stability. Accordingly, instability onset is quickly and accurately determined during scanning, thereby eliminating the need of expert user tuning of gains during operation.

Abstract: Methods and apparatuses are provided for automatically controlling and stabilizing aspects of a scanning probe microscope (SPM), such as an atomic force microscope (AFM), using Peak Force Tapping (PFT) Mode. In an embodiment, a controller automatically controls periodic motion of a probe relative to a sample in response to a substantially instantaneous force determined, and automatically controls a gain in a feedback loop. A gain control circuit automatically tunes a gain based on separation distances between a probe and a sample to facilitate stability. Accordingly, instability onset is quickly and accurately determined during scanning, thereby eliminating the need of expert user tuning of gains during operation.

Abstract: A clamping device comprises a driving cylinder, a buffering assembly, a first clamping member, and a second clamping member. The first clamping member and the second clamping member are mounted to the driving cylinder. The buffering assembly comprises a fixing member, a guiding rail, a guiding rod, and an elastic member. The fixing member comprises a first mounting portion and a second mounting portion. The first mounting portion defines a through hole. The guiding rail is mounted to the fixing member and located between the first mounting portion and the second mounting portion. The driving cylinder is mounted to the guiding rail. A first end of the guiding rod is movably received through the through hole, and a second end of the guiding rod is fixed to the driving cylinder. Opposite ends of the elastic member resist against the first mounting portion and the driving cylinder, respectively.

Abstract: A method for machining curved surface includes the flowing steps. A lathe is provided. The lathe includes a work table and a feeding device. The feeding device has a cutter. A workpiece is held on the work table. The work table rotates the workpiece. The feeding device controls the cutter to move backwards and forwards at a high speed to machine the workpiece circumferentially. The feeding device moves in a plane relative to the work table to machine the curved surface.

Abstract: A kind of filamentous turbine comprises a shell body and a rotor, the shell body is provided with a nozzle, the nozzle is used to eject gas into the shell body, the rotor which is arranged in the shell body comprises a rotor shaft, two fixing disks and a filamentous structure, the two fixing disks are mounted to the rotor shaft, the filamentous structure is mounted between the two fixing disk. The filamentous structure for this kind of filamentous turbine replaces the thin and circular disk of the traditional Tesla turbine, and the filamentous structure provides good integral rigidity and is not easy to deform, so that the rotor can be made larger in diameter, and the filamentous structure facilitates to reduce the machine noise.

Abstract: A machine tool includes a machine support, a work table positioned on the machine support, a moving device and a feeding device. The moving device is movably mounted on the machine support along a first direction above the work table. The feeding device is slidably positioned on the moving device along a second direction at ninety degrees from the first direction. The feeding device includes a feeding mechanism and a cutter. The feeding mechanism drives the tool holder and the cutter to move back and forth along a third orthogonal direction.

Abstract: A lathe includes a machine support, a work table, two cross beams and a feeding device. The work table is positioned on the machine support. The two cross beams are mounted on the machine support above the work table. The feeding device includes a cutter. The feeding device is slidably assembled between the two cross beams to obtain support from opposite sides of the two cross beams.

Abstract: A method of operating a metrology instrument includes generating relative motion between a probe and a sample at a scan frequency using an actuator. The method also includes detecting motion of the actuator using a position sensor that exhibits noise in the detected motion, and controlling the position of the actuator using a feedback loop and a feed forward algorithm. In this embodiment, the controlling step attenuates noise in the actuator position compared to noise exhibited by the position sensor in a bandwidth of about seven times the scan frequency. Scan frequencies up to a third of the first scanner resonance frequency or greater than 300 Hz are possible.

Abstract: A feeding device includes a tool holder, a cutter, a feeding mechanism and a mounting seat. The cutter is positioned on the tool holder. The mounting seat has at least one guiding portion. The tool holder is slidably engaged with the at least one guiding portion. The feeding mechanism includes at least two drivers. Each driver includes a forcer and a stator. The forcers are mounted in the mounting seat, the stators are fixedly positioned on the tool holder. Interactions between alternating magnetic fields produced by the forcers and magnetic fields produced by the stators drive the tool holder and the cutter to backwards and forwards under precise control along the guiding portion.

Abstract: The present invention provides new protease resistant polypeptides, as well as compositions and methods for treating, ameliorating or preventing conditions related to joint damage, including acute joint injury and arthritis.

Abstract: Disclosed is a method for determining an indoor location which includes receiving signals including IDs and information on floors from a plurality of APs that is provided at floors of the multi-story building; measuring reception signal strengths of the received signals, and selecting candidate floors by using the measured reception signal strengths; predicting reception signal strengths of the other candidate floors by using the reception signal strengths of the APs provided at the respective candidate floors; and calculating variance values for the reception signal strengths of the candidate floors, and estimating a current location by using the variance values.

Abstract: A workpiece turning-over device includes a mounting wall, a gear driving mechanism, and a rotation mechanism. The gear driving mechanism comprises a toothed bar and a driving member. The driving member is able to drive the toothed bar to move. The rotation mechanism comprises a sleeve and a gear. The sleeve is rotatably attached to the mounting wall. A supporting portion extends from the sleeve to secure the workpiece thereon. The gear is fixedly coiled around the sleeve, engaged to the toothed bar, and is able to rotate to rotate the sleeve fixed thereto, thereby allowing the workpiece to rotate.

Abstract: A method of operating a metrology instrument includes generating relative motion between a probe and a sample at a scan frequency using an actuator. The method also includes detecting motion of the actuator using a position sensor that exhibits noise in the detected motion, and controlling the position of the actuator using a feedback loop and a feed forward algorithm. In this embodiment, the controlling step attenuates noise in the actuator position compared to noise exhibited by the position sensor in a bandwidth of about seven times the scan frequency. Scan frequencies up to a third of the first scanner resonance frequency or greater than 300 Hz are possible.

Abstract: A kind of filamentous turbine comprises a shell body and a rotor, the shell body is provided with a nozzle, the nozzle is used to eject gas into the shell body, the rotor which is arranged in the shell body comprises a rotor shaft, two fixing disks and a filamentous structure, the two fixing disks are mounted to the rotor shaft, the filamentous structure is mounted between the two fixing disk. The filamentous structure for this kind of filamentous turbine replaces the thin and circular disk of the traditional Tesla turbine, and the filamentous structure provides good integral rigidity and is not easy to deform, so that the rotor can be made larger in diameter, and the filamentous structure facilitates to reduce the machine noise.

Abstract: Provided is a wireless positioning method using a wireless sensor network, for estimating a position of an unknown node that is a positioning target by using a plurality of anchor nodes arranged at regular intervals, the wireless positioning method including: setting a plurality of test nodes at regular intervals on a space formed by some of the plurality of anchor nodes; obtaining a number and position information of anchor nodes within a predetermined distance from the unknown node; detecting at least one test node matching the obtained number and position information; and estimating a position of the unknown node by calculating an average coordinate value of the detected at least one test node.

Abstract: Provided are an indoor wireless positioning system and method capable of more accurately performing indoor wireless positioning by predicting signal attenuation due to a floor or wall within a multi-floor building. The indoor wireless positioning method includes calculating floor loss information of a floor on which the user terminal is located within the building, a higher floor, and a lower floor, calculating the floor on which the user terminal is located by comparing the calculated floor loss information to pre-stored previous floor loss information, calculating information about wall loss in the floor on which the user terminal is located, and acquiring position information on a horizontal plane of the user terminal according to received signal strength of the user terminal and the information about the wall loss. When the position of the user terminal is detected, detection accuracy is improved and more efficient wireless positioning is possible.

Abstract: Biomass is converted to a fluid hydrocarbon product comprising p-xylene by reaction over a zeolite catalyst. An iron-modified zeolite catalyst having a siliceous coating and methods of making the catalyst are also described.

Abstract: Disclosed is a method for determining an indoor location which includes receiving signals including IDs and information on floors from a plurality of APs that is provided at floors of the multi-story building; measuring reception signal strengths of the received signals, and selecting candidate floors by using the measured reception signal strengths; predicting reception signal strengths of the other candidate floors by using the reception signal strengths of the APs provided at the respective candidate floors; and calculating variance values for the reception signal strengths of the candidate floors, and estimating a current location by using the variance values.