Other

Hitachi, Ltd.

Mitsuo Sekiguchi

Yoshikazu Sato

Daizo Tokinaga

Yoshiteru Furuta

Isao Matsuda

Hiroya Kakimoto

A condition of a recording pulse comprising a top pulse and a following pulse is determined in a predetermined order. In some embodiments, an mT pulse condition is first determined by test recordings with various power and pulse conditions, involving an inspection of recording quality; then an m'T/(n&#x2212;m)T ratio is determined by test recording under the mT pulse condition fixed; and finally an nT pulse is configured based on the ratio. A phase shift can be corrected by test recording with the nT pulse.

Optical information recording apparatus and method and processing circuit

A body fluid sample is diluted with a diluent which comprises an aqueous solution containing bis(2-hydroxyethyl)-iminotris(hydroxymethyl)methane and boric acid to obtain a diluted body fluid sample, and the ion concentration in the diluted body fluid sample is determined with ion-selective electrodes, whereby the variation width of pH in the diluted body fluid sample can be held down to a narrow range. As a result the determination can be made without exerting adverse effects on the ion-selective electrodes, and errors in determination can be markedly reduced as compared with cases where the conventional diluents are used.

Sample diluent for measurement with ion-selective electrodes and method

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Sakadoshi, Japan

Mitsuo Sekiguchi