Seiichiro Ishijima

Learn More
We have used the technique of fluorescence recovery after photobleaching to measure the diffusibility of the fluorescent lipid analogue, 1,1'-dihexadecyl 3,3,3',3'-tetramethylindocarbocyanine perchlorate on the morphologically distinct regions of the plasma membranes of mouse spermatozoa, and the changes in lipid diffusibility that result from in vitro(More)
Control of body position is important in skiing. During turn, novice skiers often lean back and lose their control. Leaning back is natural reaction for people. They arc afraid of the slope or speed. We develop a device to provide realtime sonification feedback of the center of gravity of the skier. The device guides the position of skier. A preliminary(More)
The flagellar movement of intact ejaculated ram sperm, and of demembranated models reactivated with ATP, has been studied using high-speed, high-resolution video microscopy. Intact sperm attached to the coverslip by their heads had an average beat frequency of 20.9 Hz and an average wave amplitude of 20.2 micron. There was little difference in the beat(More)
A circuit in which the clock is assumed to be distributed periodically to each individual register though not necessarily to all registers simultaneously, called a semisynchronous circuit, is expected to achieve higher frequency or a smaller clock tree compared with an ordinary synchronous circuit, called a complete-synchronous circuit. In this paper, we(More)
  • 1