Search

Your search keyword '"HIDETOSHI YOSHIMURA"' showing total 2 results
Start Over Author "HIDETOSHI YOSHIMURA" Database Academic Search Index
2 results on '"HIDETOSHI YOSHIMURA"'

1. Preparation of Hydrophilic Nano-Carbon Particles and Their Applications (II).

Author

Shoichiro Ikeda, Akinari Nobumoto, Hidetoshi Yoshimura, Shosuke Kita, Shinji Ono, and Yoshimitsu Sakaguchi

Subjects
*MINERAL waters, *METAL ions, *NANOPARTICLES, *ELECTROLYTIC oxidation, *WATER use
Abstract

Hydrophilic nano-carbon particle solution has been prepared up to 1.2 wt%-C by anodic electro-oxidation of graphite in water. It is composed of mellitic acid and graphite. A new application to metal ion trapping has been tested using a mineral water. Ca ions have been well trapped by nano-carbon particles, however, Mg ions did not been so well. [ABSTRACT FROM AUTHOR]

Published
2019
Full Text
View/download PDF

2. Development of a stigmatic mass microscope using laser desorptionionization and a multi-turn time-of-flight mass spectrometer.

Author

Hisanao Hazama, Hidetoshi Yoshimura, Jun Aoki, Hirofumi Nagao, Michisato Toyoda, Katsuyoshi Masuda, Kenichi Fujii, Toshio Tashima, Yasuhide Naito, and Kunio Awazu

Subjects
*MICROSCOPICAL technique, *TIME-of-flight mass spectrometry, *LASERS, *DESORPTION, *METHYLENE blue, *GENTIAN violet
Abstract

A novel stigmatic mass microscope using laser desorptionionization and a multi-turn time-of-flight mass spectrometer, MULTUM-IMG, has been developed. Stigmatic ion images of crystal violet masked by a fine square mesh grid with a 12.7 m pitch as well as microdot patterns with a 5 m dot diameter and a 10 m pitch made with rhodamine B were clearly observed. The estimated spatial resolution was about 3 m in the linear mode with a 20-fold ion optical magnification. Separating stigmatic ion images according to the time-of-flight, i.e., the mass-to-charge ratio of the ions was successfully demonstrated by a microdot pattern made with two different dyes, crystal violet and methylene blue. Stigmatic ion images of a microdot pattern made with crystal violet were observed after circulation in MULTUM-IMG, and the pattern of the ion image was maintained after ten cycles in MULTUM-IMG. A section of a mouse brain stained with crystal violet and methylene blue was observed in the linear mode, and the stigmatic total ion image of crystal violet and methylene blue agreed well with the optical microphotograph of the hippocampus for the same section. [ABSTRACT FROM AUTHOR]

Published
2011
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results