Infrared absorption spectroscopy (Nakanishi, Koji)
نویسندگان
چکیده
منابع مشابه
assessing absorption coefficient of hemoglobin in the breast phantom using near-infrared spectroscopy
objectives in this study, the absorption coefficient of hemoglobin (hb) was used to distinguish between normal and abnormal breast tissue. materials and methods a near-infrared source (637 nm) was transmitted from major and minor vessels of a breast phantom containing 2×, 4× concentrations of oxy- and deoxy-hb. the absorption coefficients were determined from spectrometer (sm) and powermeter (p...
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Sulfur hexafluoride (SF₆) gas-insulated electrical equipment is widely used in high-voltage (HV) and extra-high-voltage (EHV) power systems. Partial discharge (PD) and local heating can occur in the electrical equipment because of insulation faults, which results in SF₆ decomposition and ultimately generates several types of decomposition products. These SF₆ decomposition products can be qualit...
متن کاملInfrared reflection absorption spectroscopy study of smectite clay monolayers
Infrared reflection absorption spectroscopy (IRRAS), also called infrared external reflection spectroscopy, is used for studying ultrathin hybrid clay films prepared by the Langmuir–Blodgett (LB) method. Infrared spectra of the hybrid films have been obtained at the air–water and air–solid (gold) interface. The presence of a smectite monolayer is observed when cationic surfactants are spread ov...
متن کاملMeasuring moisture in cheese by near infrared absorption spectroscopy.
Data in the literature indicate that the measurement of moisture in cheese by near infrared transmittance (NIT) is more accurate than by reflectance (NIR). The accuracy of the NIT measurement (SEP) was calculated for Edam, Gouda, Brie, Colby, and Cheddar. A range of SEP values (0.12-0.35) was obtained using different methods of calibration for different types of samples. There was close agreeme...
متن کاملNoninvasive Blood Glucose Analysis using Near Infrared Absorption Spectroscopy
A modular Fourier-transform spectrometer was designed and built for the noninvasive blood glucose measurement research using the near-infrared absorption technique. A series of experiments were performed to evaluate the spectrometer’s efficiency and its stability. The efficiency, which represents the photon loss through the spectrometer, is proportional to the achievable signal-to-noise ratio. ...
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1963
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed040p616.3