Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Shuji Ikoma"'
Autor:
Yasumasa Tomita, Yasuhisa Maeda, Ryoka Matsushima, Choji Fukuhara, Masashi Shibata, Mayu Inagawa, Yoshiumi Kohno, Shuji Ikoma, Kenkichiro Kobayashi
Publikováno v:
Applied Clay Science. 54(3-4):202-205
The stability of the naturally occurring annatto dye against irradiation with visible light was enhanced by intercalation into octyl trimethylammonium and dodecyl trimethylammonium montmorillonite. The intercalated dye exhibited improved light fastne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::412f1f3f05369975cb99de85748afb3d
http://hdl.handle.net/10297/7626
http://hdl.handle.net/10297/7626
Autor:
Mitsuru Kurata, Yoshiumi Kohno, Kenkichiro Kobayashi, Shuji Ikoma, Ryoka Matsushima, Maki Ito, Yasumasa Tomita, Masashi Shibata, Yasuhisa Maeda
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 218(1):87-92
2-Hydroxychalcones are known to be converted to the colored flavylium form under UV irradiation. In this study, the photochemical conversion of two 2-hydroxychalcone derivatives (4′-dimethylamino-2-hydroxychalcone and 4′-methoxy-2-hydroxychalcone
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::280e07cab09543e1181084511aa63b28
http://hdl.handle.net/10297/5615
http://hdl.handle.net/10297/5615
Autor:
Yasumasa Tomita, Ryoka Matsushima, Yoshiumi Kohno, Ryo Hoshino, Shuji Ikoma, Masashi Shibata, Yasuhisa Maeda, Kenkichiro Kobayashi
Publikováno v:
Shikizai Kyokaishi. 83:103-107
We have enhanced the stability of a flavylium dye, a model compound of a natural anthocyanin dye, by the incorporation into the interlayer of a natural clay, bentonite. The composite of the flavylium and the bentonite shows excellent stability under
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05a6864637a876e562d58b2dd3d6734a
https://doi.org/10.4011/shikizai.83.103
https://doi.org/10.4011/shikizai.83.103
Autor:
Yoshiumi Kohno, Kenkichiro Kobayashi, Masashi Shibata, Shuji Ikoma, Yasuhisa Maeda, Yasumasa Tomita, Ryoka Matsushima, Keiko Yoda, Koichi Totsuka
Publikováno v:
Journal of Colloid and Interface Science. 337(1):117-121
The aim of this study is the improvement of the photostability of several natural anionic dyes, carmine (CM), carthamus yellow (CY), and annatto dye (ANA), by complexation with hydrotalcite. The composite of the dyes and hydrotalcite is prepared by t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5fe4100a3aeb6a56fb72a522e0652176
http://hdl.handle.net/10297/4205
http://hdl.handle.net/10297/4205
Autor:
Kenkichiro Kobayashi, Yasuhisa Maeda, Reina Kinoshita, Yasumasa Tomita, Shuji Ikoma, Yoshiumi Kohno, Ryoka Matsushima, Keiko Yoda, Masashi Shibata
Publikováno v:
Applied Clay Science. 42(3-4):519-523
Because of its non-toxicity, naturally occurring anthocyanin has a potential for the utilization as a harmless coloring material. Its color instability under alkaline condition or light irradiation limits its practical use. Anthocyanin can be stabili
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::016cdcead7575a8112d552d920a485fc
http://hdl.handle.net/10297/3507
http://hdl.handle.net/10297/3507
Publikováno v:
Journal of Applied Chemistry and Biotechnology. 27:275-280
The thermal decomposition of uranyl chloride hydrate has been investigated by thermal analyses, X-ray diffraction and infrared spectroscopy. From the results it is concluded that uranyl chloride hydrate decomposes thermally as follows: .
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::deaa6eedc8db592c14faebb9ddbeeffe
https://doi.org/10.1002/jctb.5020270141
https://doi.org/10.1002/jctb.5020270141
Publikováno v:
Journal of Chemical Technology and Biotechnology. 30:384-389
The thermal decomposition of uranyl sulphate hydrate (UO2SO4-3H2O) has been investigated by thermogravimetry, differential thermal analysis, X-ray diffraction and infrared spectrophotometry. As a result, it is concluded that uranyl sulphate hydrate d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d52854ba19bf5a84d53fd2cab6626b06
https://doi.org/10.1002/jctb.503300146
https://doi.org/10.1002/jctb.503300146
Publikováno v:
Journal of Chemical Technology and Biotechnology. 30:225-232
The preparation of gelatinous aluminium hydroxide from aqueous solutions containing a mixture of the chloride, nitrate or sulphate of aluminium and urea by heating at 95°C has been investigated under different conditions. The pH value of aqueous sol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1360cfe9bea2f95d6a9f422789a34d47
https://doi.org/10.1002/jctb.503300128
https://doi.org/10.1002/jctb.503300128
Publikováno v:
Journal of Chemical Technology and Biotechnology. 31:745-750
The preparation of gelatinous aluminium hydroxide from aqueous solutions of the formate, citrate or tartrate of aluminium on addition of aqueous sodium hydroxide has been investigated under different conditions. The precipitates from aqueous solution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52bcacc3d40ffcdba7e6ba3126f5b9d8
https://doi.org/10.1002/jctb.5033101100
https://doi.org/10.1002/jctb.5033101100
Publikováno v:
Journal of Chemical Technology and Biotechnology. Chemical Technology. 33:415-420
The thermal transformation of anhydrous alumina obtained by the decomposition of the lactate, citrate and tartrate of aluminium has been examined by thermal analysis(TGA and DTA), infrared spectrophotometry and X-ray diffraction study. It is found th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1e33bec68e04b35916238f5a58c12c1
https://doi.org/10.1002/jctb.504330805
https://doi.org/10.1002/jctb.504330805