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Dive into the research topics where Hideaki Nakayama is active.

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Featured researches published by Hideaki Nakayama.


Paleobiology | 1980

Implosion of living Nautilus under increased pressure

Yasumitsu Kanie; Yoshio Fukuda; Hideaki Nakayama; Kunihiro Seki; Mutsuo Hattori

In a hyperbaric chamber, a living mature specimen of Nautilus pompilius withstood a hydrostatic pressure of 8.05 MPa (80.5 kg/cm 2 ) equivalent to 785 m deep in the sea. Thereafter it was killed instantly by implosion of the shell. Before implosion, the animal reacted physiologically to increasing pressure. Therefore, the depth of 785 m can be assigned the depth limit of N. pompilius. The result bears on critical interpretations on the paleoecology and paleobiology of extinct nautiloids and ammonoids with similar shells.


The Annals of physiological anthropology | 1985

Power spectral analysis of intentional and postural tremor during a simulated heliox dive to 31ATA.

Masahiro Yamasaki; Takashi Sasaki; Kazuyoshi Sakamoto; Fumiro Shidara; Yasushi Taya; Masami Nakano; Kunihiro Seki; Hideaki Nakayama


The Annals of physiological anthropology | 1984

Modification of Circulatory Function during Apnoeic Divingin Jaques Mayol and Japanese Professional Ama

Yasuo MIZUSHlMA; Kunihiro Seki; Hideaki Nakayama; Seiji Tamaya


The Annals of physiological anthropology | 1990

[Evaluation of a semi-closed underwater breathing apparatus, the "eOBA"].

Naoshi Kakitsuba; Hideaki Nakayama


The Annals of physiological anthropology | 1986

Effect of a simulated saturation dive to 31 ATA on pulmonary function.

Masahiro YAMASAKl; Yasushi Taya; Kaoru Fujiie; Kunihiro Seki; Takashi SASAKl; Hideaki Nakayama


The Annals of physiological anthropology | 1985

Subjective Signs and Symptoms in Divers during Compression with Heliox to 300 Meters(31 ATA).

Yasushi Taya; Fumiro Shidara; Masami Nakano; Kunihiro Seki; Hideaki Nakayama


The Annals of physiological anthropology | 1985

[The review of the R & D of saturation diving experiment in Japan].

Hideaki Nakayama


The Annals of physiological anthropology | 1985

11 Influence of Hyperbaric Heliox Environment (31 ATA and He-0_2) on Microvibration and Electroencephalogram

Kazuyoshi Sakamoto; Masahiro Yamasaki; Toshitomo Usui; Kunihiro Seki; Fumiro Shidara; Mariko Iwasaki; Hideaki Nakayama


The Annals of physiological anthropology | 1985

14 Postural and Intentional Tremor during a Simulated Oxygen-helium Dive to 300m

Masahiro Yamasaki; Takashi Sasaki; Kazuyoshi Sakamoto; Kunihiro Seki; Hideaki Nakayama


The Annals of physiological anthropology | 1985

Influence of Hyperbaric Heliox Environment at 31ATA on Microvibration and Electroencephalogram in Four Divers

Kazuyoshi Sakamoto; Toshitomo Usui; Masashiro Yamasaki; Yoshinori Masuya; Kunihiro Seki; Hideaki Nakayama

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Kazuyoshi Sakamoto

University of Electro-Communications

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Toshitomo Usui

University of Electro-Communications

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Mutsuo Hattori

Japan Agency for Marine-Earth Science and Technology

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