Journal of electron microscopy technique, 18(2), 142-147 (1991-06-01)
The crystal structure of the odd-chain paraffin, n-tritriacontane, nC33H68, is determined directly by using low-dose electron microscope images and electron diffraction intensity data from epitaxially grown microcrystals. Phases of the most intense "polyethylene" reflections are determined from triplet structure-invariant relationships
Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials, 34(7), 1060-1062 (2011-11-10)
To study the chemical constituents of Pithecellobium clypearia. Silica gel column chromatography and Sephadex LH-20 were used to separate and purify compounds from the EtOAc soluble fraction of Pithecellobium clypearia. 9 compounds were elucidated on the basis of physicochemical properties
Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials, 33(4), 551-554 (2010-09-18)
To study the chemical constituents from Kalimeris indica. Compounds were isolated and purified with silica gel and Sephadex LH-20 column chromatography, their structures were determined by using spectroscopic analysis including MS and NMR. Nine compounds were isolated and identified as
About 50 years ago crystalline deposits of a substance representing approximately 7 per cent wet tissue weight and believed to be hentriacontane or a mixture of similar long-chain n-alkanes (30-34 carbon atoms) were detected in two discoloured and swollen cow
Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials, 30(1), 35-37 (2007-06-02)
To study the chemical constituents of the root of Inula cappa. The compounds were isolated and purified by recrystallization and chromatography with silica gel column and Sephadex LH-20 column. Their structures were identified by physico-chemical properties and spectral analysis. Seven
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Notre équipe de scientifiques dispose d'une expérience dans tous les secteurs de la recherche, notamment en sciences de la vie, science des matériaux, synthèse chimique, chromatographie, analyse et dans de nombreux autres domaines..
