Abstract:
A system for evaluating cutting efficiency of root canal rotary instruments is provided. The system includes a root canal rotary instrument, a driving unit, a cutting object, a prestressing force providing unit and a feeding unit. The root canal rotary instrument is attached on the driving unit, and driven thereby. The cutting object is pressed by the prestressing force providing unit to contact the root canal rotary instrument. The feeding unit feeds the cutting object to the root canal rotary instrument, and the root canal rotary instrument cuts an uncut surface of the cutting object.
Abstract:
A conveying device for testing heat dissipating fans, which is suitable for testing multiple heat dissipating fans at the same time, includes a base, a conveying unit, a plurality of movable loading tables, which are placed on the conveying unit, and a first and second conductor rail units, which are disposed under the respective movable loading table. The conveying unit further includes a conveying element and an actuating element, which actuates the conveying element to move. Each movable loading table further includes a support plate, a test circuit on the support plate and a first and second conductive plates, which are disposed at the bottom of the support plate and spaced apart from each other. The first and second conductor rail units have a locating plate and a plurality of micro conductor rails, which are provided on the locating plates and space from each other. The first and second conductor rail units in company with the conveying unit to allow the heat dissipating fans on the movable loading tables being delivered along with being performed operation test.
Abstract:
A method for manufacturing the DP-bioglass to use in dental fracture repair via the carbon dioxide laser, the method comprises the steps: mixing and co-dissolving silicon and phosphoric acid raw material into ethanol; sequentially adding nitric acid, calcium and sodium raw material and stirring; standing, drying, triturating and heating the composition to obtain a glass powder material consisting of Na2O—CaO—SiO2—P2O5 and drying the oxide material mixing with a phosphoric acid to react the DP-bioglass.
Abstract:
A test device for a heat dissipating fan, which is suitable for testing if the fan wheel is secured to the housing firmly, includes a support post, a transverse slide unit, which is disposed at the top of the support post and provides a transverse slide seat, a vertical slide unit, which is disposed at the transverse slide seat and provides a vertical slide seat. Further, the test device provides a clamping unit, a suction unit and a sensing element, which are moved with the vertical slide seat. The clamping unit clamps the housing and the suction unit absorbs the fan wheel. The heat dissipating fan is admitted in case of the sensing unit sensing the fan wheel being incapable of moving upward under the suction force and is carried away by the transverse slide unit in case of the sensing unit sensing the fan wheel being capable of moving upward under the suction force.