نتایج جستجو برای: violet methyl colour
تعداد نتایج: 150635 فیلتر نتایج به سال:
Eurasian Jay (Garrulus glandarius) feathers display periodic variations in the reflected colour from white through light blue, dark blue and black. We find the structures responsible for the colour are continuous in their size and spatially controlled by the degree of spinodal phase separation in the corresponding region of the feather barb. Blue structures have a well-defined broadband ultra-v...
The “Colour Family Drawing Test” applied a classification of colours on an emotional basis leading to the distinction between “Alarming and Serious” (black, grey, violet, olive-green, dark blue, red, yellow) and “Reassuring and Playful” hues (pink, sky blue, orange and pastel colours). 120 participants (aged 7 10 years, both genders), attending Rome primary schools, were individually examined. ...
The sodium salt of gentisic acid has been used in the treatment of rheumatic fever (Meyer and Ragan, 1948). It has been reported that the substance is as active therapeutically as sodium salicylate and has the advantage that it produces few, if any, toxic effects even in doses up to 18 g. per day (Camelin, Accoyer, Pellerat, Lafuma, and Coirault, 1949). The concentrations of gentisate in plasma...
Copigmentation has been suggested as a main colour stabilising mechanism in plants protecting the coloured flavylium cation from the nucleophilic attack by the water molecule. In this study influence of phenolic compounds addition (catechol, 4-methyl catechol, (+)-catechin and gallic acid) on stability of red currant juice anthocyanins (copigment:pigment molar ratio 50:1 and 100:1) during 30 da...
The cation of methyl green carries two positive charges, that of malachite green only one; but the two dyes behave towards tissue-constituents in almost exactly the same way. These dyes are not specific for chromatin. They colour certain objects that are devoid of DNA, even when they are used in very dilute solution. The granules of cells called Kornchenzellen in the connective tissue of the co...
We demonstrate that the large scatter in the ultra-violet (UV) colours of intermediatemass early-type galaxies in the local Universe and the inferred low-level recent star formation in these objects can be reproduced by minor mergers in the standard ΛCDM cosmology. Numerical simulations of mergers with mass ratios ≤ 1:4, with reasonable assumptions for the ages, metallicities and dust propertie...
The Feulgen reaction is a cytochemical test for the detection of desoxyribonucleic (tliymonucleic) acid. After acid hydrolysis, desoxyribonucleic acid in the presence of sulphurous acid gives a characteristic red-purple colour with basic fuchsin, and the depth of the colour roughly reflects the concentration of the compound. The detailed chemistry of the reaction has been fully described by Bak...
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