Keiko Natori

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The empirical pseudopotential band-structure of Ge, Si, and GaAs is used to compute the impact ionization (pair production) rate for electrons and holes. The constant-matrix-element and Kane's random-k approximations are also employed, to assess the importance of the energy-dependence of the Coulomb matrix element, of momentum conservation, and of the joint(More)
A 56-year-old man visited a doctor because of arrhythmia and a diagnosis of hypertrophic cardiomyopathy was made in 1990. On January 9th, 1997, when aged 63 years old, he visited another doctor because of paroxysmal atrial fibrillation tachycardia. Since his clinical symptoms did not ameliorate, he visited our hospital on April 14th, and Holter(More)
A 29-year-old man was admitted with abdominal pain. Peritonitis symptoms appeared on the day after of hospitalization and emeregency surgery was performed. A Meckel diverticulum adhered to the mesenterium of the sigmoid colon which was strangulated for a length of 30cm. Additionally, a second Meckel diverticulum was present on the oral side of the first(More)
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