Ryosuke Saito

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This paper proposes an application of piezoelectric elements as inductors for a resonant electrostatic induction motor. The stator and the slider of the motor are made of plastic films with fine pitched electrodes patterned onto them. The stator electrodes are connected to the three-phase voltage source, whereas the slider electrodes are connected to three(More)
The mass extinction of life 66 million years ago at the Cretaceous/Paleogene boundary, marked by the extinctions of dinosaurs and shallow marine organisms, is important because it led to the macroevolution of mammals and appearance of humans. The current hypothesis for the extinction is that an asteroid impact in present-day Mexico formed condensed aerosols(More)
A detailed exploration of the synthesis of (-)-morphine based on sequential [3,3]-sigmatropic rearrangements is described. The sequential Claisen/Claisen rearrangements of an allylic vicinal diol resulted in the stereoselective formation of the two contiguous carbon centers, including a sterically encumbered quaternary carbon, in a single operation. The two(More)
The largest mass extinction of biota in the Earth's history occurred during the Permian-Triassic transition and included two extinctions, one each at the latest Permian (first phase) and earliest Triassic (second phase). High seawater temperature in the surface water accompanied by euxinic deep-intermediate water, intrusion of the euxinic water to the(More)
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