Abstract: A material decomposition apparatus for performing decomposition of a material in an object. The apparatus includes a data storage section for storing correction data preliminarily generated by decomposing one of three or more materials into the other two materials, a data input section to which radiation data of the object is inputted, the radiation data being divided into a plurality of energy levels, and a decomposition processing section for repeatedly performing two-material decomposition for decomposition of the other two materials of the three or more materials using the radiation data at different energy levels and the correction data to perform decomposition of the inside of the object into the three or more materials.

Abstract: An on-vehicle DC-DC converter prevents radio disturbance in a car radio, while simplifying the filters on the input side and the output side of the DC-DC converter. The on-vehicle DC-DC converter, which converts the voltage of a first DC power supply to the voltage of a second power supply, provides a switching frequency that is obtained by reducing the oscillation frequency of a quartz oscillator and can be set at 135 kHz for use with AM broadcasts having the frequency interval of 10 kHz or set at (n+0.5) times as high as the frequency interval of 9 kHz for use with AM broadcasts having the frequency interval of 9 kHz, between the adjacent AM broadcast waves receivable by a car radio mounted on a vehicle, n being a positive integer.

Abstract: A control apparatus controlling a DC/DC converter. The control apparatus switches on and off switching devices to transfer the electric power from a main storage battery to an auxiliary battery. The control apparatus includes a control circuit controlling the switching on and off, a voltage monitor detecting the over and under voltage of the main storage battery, and a gate drive circuit, including a driving transformer, driving the switching devices. The control apparatus utilizes the large current, which flows on the control circuit side of the driving transformer by short-circuiting the output side of the transformer in response to the detected over or under voltage, to transfer the isolated signal indicating the main storage battery voltage to the control circuit side. The control apparatus is more reliable than conventional control apparatuses, which employ a photo-coupler to transfer the isolated signal to the control circuit side.

Abstract: An oral composition containing (i) fumed silica and polyethylene glycol having an average molecular weight of 2000 to 6000.

Abstract: A proximity switch including a high-frequency oscillation device, including a detection coil, for generating an output signal which represents the detection of the approach of an object. A rectification device is included for rectifying and smoothing the output signal from the high-frequency oscillation device to generate an output signal. A feedback device feeds back the output signal from the rectification device to the high-frequency oscillation device. An output device generates a signal when the quantity of the feedback by the feedback device has exceeded a predetermined value. The signal generated by the output device representing the approach of the object.