منابع مشابه
Survey of Plant Pigments: Molecular and Environmental Determinants of Plant Colors
It is difficult to estimate the importance of plant pigments in plant biology. Chlorophylls are the most important pigments, as they are required for photosynthesis. Carotenoids are also necessary for their functions in photosynthesis. Other plant pigments such as flavonoids play a crucial role in the interaction between plants and animals as visual signals for pollination and seed scattering. ...
متن کاملCrystal structure prediction of organic pigments: quinacridone as an example
The structures of the alpha, beta and gamma polymorphs of quinacridone (Pigment Violet 19) were predicted using Polymorph Predictor software in combination with X-ray powder diffraction patterns of limited quality. After generation and energy minimization of the possible structures, their powder patterns were compared with the experimental ones. On this basis, candidate structures for the polym...
متن کاملThermodynamic Explanation for the Cosmic Ubiquity of Organic Pigments
There is solid evidence for the occurrence of large amounts of organic material in the cosmos, particularly in the form of aromatic compounds. These molecules can be found on the surface of Earth and Mars, in the atmospheres of the larger planets and on many of their satellites, on asteroids, comets, meteorites, the atmospheres of red giant stars, interstellar nebulae, and in the spiral arms of...
متن کاملIdentification of organic pigments in tattoo inks and permanent
Nowadays, about 12% of the European and 20% of the US population are tattooed. Rising concerns regarding consumer safety, led to legal restrictions on tattoo inks and permanent make-up (PMU) inks. Restrictions also include bans on certain hazardous colourants. Both ink types use organic pigments for colour-giving, plus inorganic pigments for white and black and colour tones. Pigments are only s...
متن کاملIdentification of organic pigments in tattoo inks and permanent
Nowadays, about 12% of the European and 20% of the US population are tattooed. Rising concerns regarding consumer safety, led to legal restrictions on tattoo inks and permanent make-up (PMU) inks. Restrictions also include bans on certain hazardous colourants. Both ink types use organic pigments for colour-giving, plus inorganic pigments for white and black and colour tones. Pigments are only s...
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ژورنال
عنوان ژورنال: Journal of the Japan Society of Colour Material
سال: 1985
ISSN: 0010-180X
DOI: 10.4011/shikizai1937.58.89