Kyoto Daiichi Kagaku Co., Ltd.

Other

Arkray, Inc.

Kurashiki Boseki Kabushiki Kaisha

Emi Ashibe

Harumi Uenoyama

Naoki Yanai

Motonobu Shiomi

Eiichi Kimura

Hiroko Kubo

Yoshinori Yamaguchi

Masayuki Yagi

Yutaka Yamasaki

Toshihiro Imai

Takeshi Sakura

Nobuyoshi Yasuda

Xu Kexin

Dou Xiaoming

Kazuhiro Omiya

The present invention provides a reagent for measuring a degree of oxidative stress that includes a compound represented by the following general formula (I) or a salt thereof, and a method of measuring a degree of oxidative stress using the reagent for measuring a degree of oxidative stress. In the general formula (I), R, R, Rand Reach independently represent a hydrogen atom, an ethyl group, an isopropyl group, a hydroxyalkyl group that has 1 to 4 carbon atoms, or a phenyl group, and at least one of R, R, Ror Rrepresents an isopropyl group, a hydroxyalkyl group having 1 to 4 carbon atoms, or a phenyl group. 

Reagent for measuring degree of oxidative stress and method of measuring degree of oxidative stress

A photometer comprises a projecting mechanism irradiating a physical mass with infrared light within a wavelength region of 1.1 to 2.0 &mgr;m, a photoreceiving mechanism receiving output light from the physical mass and a spectroscope separating the light applied to the physical mass or the output light from the physical mass into its spectral components, for measuring absorbance by the physical mass at a specific wavelength. A compression mechanism can compress a measured region of the physical mass or a peripheral portion thereof, and difference absorbance calculator obtains difference absorbance from first absorbance obtained by the photometer under a state compressed by the compression mechanism with a first pressure and second absorbance obtained by the photometer under a state compressed with a second pressure lower than the first pressure or a non-compressed state. A storage part stores a relation between body fat and difference absorbance, and an operation part quantitatively determines and outputs body fat from the difference absorbance calculated by the difference absorbance calculator on the basis of the relation stored in the storage part.

Apparatus for and method of measuring body fat

A measurement condition setting fixture is secured to a measurement site of a living body prior to the measurement. At the time of measurement, a light irradiation section and a light receiving section of a measuring optical system are respectively attached and secured to a light irradiation section securing section and a light receiving section securing section of the measurement condition setting fixture . Thus, the measurement site and the measuring optical system are secured to each other, and desirable measurement conditions can be realized. Moreover, the measurement conditions can be maintained throughout the measurement. After the measurement is completed, the measurement site can be removed from the measuring optical system by detaching the light irradiation section and the light receiving section from the light irradiation section securing section and the light receiving section securing section . When the measurement is performed again, the desirable measurement conditions can be reproduced merely by attaching the light irradiation section and the light receiving section to the light irradiation section securing section and the light receiving section securing section

Measuring condition setting jig, measuring condition setting method and biological information measuring instrument

The apparatus for processing a spectrum in spectral measurement includes: a measurement section,for measuring an energy spectrum of light for measurement from an object to be measured; an addition section,for adding a predetermined value to the energy spectrum of the light for measurement; and a conversion section,for obtaining an absorbance spectrum with reduced noise by effecting absorbance conversion of the energy spectrum of the light for measurement with the addition of the predetermined value.

Method and apparatus for processing spectrum in spectral measurement

A sample solution is stored in a total reflection cell, and a measuring beam is introduced from an incident optical system to be totally reflected, for measuring a total reflection absorption spectrum. Hydrogen peroxide contained in the sample solution is determined on the basis of absorbance at the position of any absorption peak of the spectrum which is present at 1200 to 1500 cm.sup.-1 or 2600 to 3000 cm.sup.-1. Hydrogen peroxide contained in an aqueous solution can be simply quantitatively analyzed through optical analysis.

Method of and apparatus for determining hydrogen peroxide

A urinal is provided on its forward end with a cell, which internally communicates with the urinal to outwardly project from the same. A measuring part comprises a light source part for applying a measuring beam of the visible or near infrared wavelength region to the cell which is set in a cell setting part and a light receiving part for receiving and detecting the measuring beam transmitted through the cell, and measures absorbances of uric components to be measured at wavelengths selected therefor respectively. A sensor part is adapted to detect that the cell is set in the cell setting part, so that the measuring part starts a measuring operation on the basis of a signal indicating that the sensor detects the cell. It is possible to carry out a urine test on a person who lies on bed.

Method of and apparatus for measuring uric components

In an optical measuring apparatus of the present invention, a spectroscopic optical system emits a measuring light beam that contains a measure light component of a measure wavelength domain where a measured object absorbs part of the light and a reference light component of a reference wavelength domain where the measured object almost completely absorbs the light, and separates the beam into beams, a photometric unit measures the light incident on an integrating sphere when a reference sample is inserted in the light path and stores the measurements in a memory and also measures the light incident on an integrating sphere when a measured object is inserted in the light path, and an arithmetic circuit calculates a light intensity ratio of the compensation light component for the measured object to the compensation light component stored in memory and then estimates background intensities during the measurement by multiplying the measurements stored in the memory by the intensity ratio.

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Kyoto, Japan

Emi Ashibe