Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Ruka Takama"'
Autor:
Kaori Saito, Katsushi Kuroda, Ruka Takama, Takashi Masumi, Kazuhiko Fukushima, Yasuyuki Matsushita, Dan Aoki
Publikováno v:
Applied Surface Science. 289:155-159
In this study, the adsorption behavior of poly(dimethyl-diallylammonium chloride) (PDADMAC), a retention agent used in papermaking, in a dual polymer system with anionic poly(acrylamide) (A-PAM) was investigated by time-of-flight secondary ion mass s
Autor:
Ruka Takama, Kazuhiko Fukushima, Katsushi Kuroda, Masato Yoshida, Yasuyuki Matsushita, Dan Aoki, Sachie Yagami, Takuya Akita, Yuto Hanaya
Publikováno v:
Scientific Reports
To clarify the role of coniferin in planta, semi-quantitative cellular distribution of coniferin in quick-frozen Ginkgo biloba L. (ginkgo) was visualized by cryo time-of-flight secondary ion mass spectrometry and scanning electron microscopy (cryo-TO
Publikováno v:
hfsg. 67:365-370
The experiments with model compounds revealed that time-of-flight secondary ion mass spectrometry (ToF-SIMS) is able to split the common interunit linkages of lignin, except the 5-5 linkage. In a previous study, ToF-SIMS produced characteristic secon
Autor:
Ruka Takama, Katsushi Kuroda, Yasuyuki Matsushita, Kazuhiko Fukushima, Takanori Imai, Kaori Saito, Takeshi Fujiwara
Publikováno v:
Surface and Interface Analysis. 45:215-219
Initially, we investigated the distribution of chemicals in dried wood samples using a standard TOF-SIMS and obtained two-dimensional images of chemical distribution in various wood samples. However, during drying as part of the sample preparation, s
Autor:
Kazuhiko Fukushima, Ruka Takama, Takanori Imai, Takashi Masumi, Kaori Saito, In-Cheol Jang, Seung-Cheol Lee, Yasuyuki Matsushita
Publikováno v:
hfsg. 66:705-709
The distribution of ethyl acetate extracts and 4,8-dihydroxy-5-methoxy-2-naphthaldehyde (compound I), which is a major constituent of the extracts obtained from the blackened heartwood of Diospyros kaki, was analyzed via gas chromatography-mass spect
Autor:
Ruka Takama, Akira Yano, Kazuhiko Fukushima, Seiichi Mochizuki, Katsushi Kuroda, Isao Kayano, Satoka Aoyagi
Publikováno v:
Surface and Interface Analysis. 45:264-267
Publikováno v:
Pure and Applied Geophysics. 167:1561-1575
The results of subsurface gas monitoring by application of gas chromatography (GC) to the gas composition of bubbles associated with groundwater for seismogeochemical studies are reported. An automated gas monitoring system was used to determine gas