Abstract: The present invention provides a Ge adsorbent for a 68Ge—68Ga generator, which is a polysaccharide polymer having a glucamine group represented by the formula (1) or the formula (2), wherein R1 is a hydrogen atom or an alkyl group, and * is a bonding position.

Abstract: In an image reading apparatus used for a copying machine and a facsimile device, an image reading scanner is separated from a main device of the apparatus in order to increase the freedom of the scanning direction of the original and increase the operability of the scanner. The hand scanner is moved by a hand of an operator on the original and reads the image data line by line. The image data representing a dot pattern is transmitted to the main device as an on/off modulated optical signal through a modem. The main device receives the optical signal and demodulates the signal using a modem to reproduce the image data obtained by the hand scanner.

Abstract: A control system for a four wheel drive vehicle is disclosed which either prevents the transmitting of the power of an internal combustion engine incorrectly or gives a warning signal indicative of incorrect operation. The control system includes two sensors for separately detecting the rotational frequency of front and rear propeller shafts, a control circuit for determining the rotational frequency difference between the front and rear propeller shafts and for generating control signals relative to a predetermined set point. A contact or a switch is operated by the control circuit. In one embodiment, an alarm buzzer and an alarm lamp are also provided.