Hitachi, Ltd.

Hitachi Tokyo Electronics Co., Ltd.

Takeshi Tajima

Minoru Yoshida

Noriyuki Kumasaka

Yasuhiro Mitsui

Shigekazu Otomo

Hiroshi Takeuchi

Kensuke Sekihara

Fumio Kawaguchi

Takeo Yamashita

Kuninori Imai

Takashi Irie

Michimasa Funabashi

Katsuhiko Itoh

Keiji Hasumi

Kazuo Nakano

Yasuaki Horiuchi

Sadao Matsuoka

Kazuaki Mizokami

An atmospheric pressure, elevated temperature gas desorption apparatus which enables quanitiative analysis of impurities absorbed in or on the surface of a solid sample (semiconductor wafer, optical disc, etc.) is disclosed. The atmospheric pressure, elevated temperature gas desorption apparatus for desorbing impurities absorbed in or on the surface of a plate-like solid sample 18 into a carrier gas 19 in a chamber 6 under an atmospheric pressure while increasing the temperature of the solid sample 18 includes a desorption room 7A provided in the chamber 6 and connected through to a first gas supply system 1 for supplying the carrier gas 19, for desorbing impurities absorbed in or on the surface of the solid sample 18 into the carrier gas 19. A sample support room 7B is provided in the chamber 6 and is separated from the desorption room 7A by a partition member 6A. The solid sample 18 is in close contact with the partition member 6A. A heater 8 for heating the solid sample 18 is in close contact with the partition member 6A. A reserve room 9 is connected to the sample support room 7B and to a second gas supply system 13 for supplying a purge gas.

Atmospheric pressure, elevated temperature gas desorption apparatus

An X-ray tomography scanner and an optical tomography scanner are combined to obtain an optical image indicting metabolism in the body. Optical projection data indicating light pulse transmissions in the body are compensated by using a light scattering coefficient distribution determined by an X-ray tomogram image discriminated into individual internal organs or tissues. The compensated projection are back-projected.

Method and apparatus for obtaining an image indicating metabolism in a

A rotating drum for use in a magnetic recording system. A magnetic head is mounted on the rotating drum, and a magnetic recording medium is wound on the rotating drum, and the rotating drum is rotated so as to read and write signals. Alternatively, the magnetic recording medium is mounted on the rotating drum, and signals are read and written by a magnetic head fixed exteriorly of the rotating drum. The rotating drum has at least one opening or notch in a magnetic recording medium-winding surface thereof. In order to restrain the deformation of the rotating drum during the rotation thereof, the center of gravity of the drum is disposed substantially in registry with the axis of rotation of the drum.

Rotating drum having a center of gravity in registry with an axis of

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Tokyo, Japan

Takeshi Tajima