Ichiro Matsui

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Aerosol optical properties were continuously measured with the National Institute for Environmental Studies (NIES) compact Raman lidar over Beijing, China, from 15 to 31 December 2007. The results indicated that in a moderate pollution episode, the averaged aerosol extinction below 1 km height was 0.39+/-0.15 km(-1) and the lidar ratio was 60.8+/-13.5 sr;(More)
We developed a 1 MV field-emission transmission electron microscope. This paper reports details and specifications of the instrument. The microscope was designed to obtain a bright and coherent electron beam by using the field emission gun equipped with a pre-accelerating magnetic lens and the high-voltage power supply with high stability (0.5 ppm min(-1)).(More)
Recently, a data processing and retrieval algorithm (version 2) for ozone, aerosol, and temperature lidar measurements was developed for an ozone lidar system at the National Institute for Environmental Studies (NIES) in Tsukuba (36 degrees N,140 degrees E), Japan. A method for obtaining the aerosol boundary altitude and the aerosol(More)
We examined the physical constitution, serum lipids, fasting serum insulin (IRI), food intake, and physical activity in 1,330 children in three age groups (6-7, 9-10, and 12-13) in Nagao village for the period 1994-1996. Serum total cholesterol (TC) and high-density lipoprotein-cholesterol (HDL-C) levels were positively correlated, and HDL-C and TG were(More)
The paper presents results from differential absorption lidar (DIAL) observations of time series of ozone concentration and temperature at the National Institute for Environmental Studies (NIES) in Tsukuba (36 N, 140 E), Japan. Currently, the lidar system uses 308/355 nm (DIAL) for stratospheric ozone measurements. The 355 nm is also used for aerosols(More)
Rates of glucose oxidation were measured with the use of a fluidized-bed column placed in a magnetic field and magnetite-containing beads of immobilized glucose oxidase and catalase. Its performance was predicted from the volumetric coefficient for liquid-phase mass transfer and the kinetic constants for glucose oxidation. Effusion of beads was negligible(More)
This paper presents a lidar method that enables the determination of quartz concentration in mineral aerosols from simultaneously measured, high-spectral-resolution lidar and quartz Raman lidar signals. The method and experimental results are presented. The mineral aerosol injected into the atmosphere over desert areas has significant effects on the Earth's(More)