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A dihydroxyanthraquinone is any of several isomeric organic compounds with formula (C 12 H 6 (OH) 2)(CO) 2, formally derived from 9,10-anthraquinone by replacing two hydrogen atoms by hydroxyl groups. Dihyroxyantraquinones have been studied since the early 1900s, and include some compounds of historical and current importance.
1,4-Dihydroxyanthraquinone, also called quinizarin or Solvent Orange 86, is an organic compound derived from anthroquinone. Quinizarin is an orange or red-brown crystalline powder. It is formally derived from anthraquinone by replacement of two hydrogen atoms by hydroxyl (OH) groups.
1,5-Dihydroxyanthraquinone is an organic compound with the formula (C 6 H 3 OH) 2 (CO) 2. It is one of several isomers of dihydroxyanthraquinone . An orange solid, it is a component of traditional Chinese medications. [ 3 ]
Starvation response in animals (including humans) is a set of adaptive biochemical and physiological changes, triggered by lack of food or extreme weight loss, in which the body seeks to conserve energy by reducing metabolic rate and/or non-resting energy expenditure to prolong survival and preserve body fat and lean mass.
Schematic of energy levels involved in two photons absorption. In atomic physics, two-photon absorption (TPA or 2PA), also called two-photon excitation or non-linear absorption, is the simultaneous absorption of two photons of identical or different frequencies in order to excite an atom or a molecule from one state (usually the ground state), via a virtual energy level, to a higher energy ...
1,2,4-Trihydroxyanthraquinone, commonly called purpurin, is an anthraquinone.It is a naturally occurring red/yellow dye.It is formally derived from 9,10-anthraquinone by replacement of three hydrogen atoms by hydroxyl (OH) groups.
1,3-Dihydroxyanthraquinone, also called purpuroxanthin or xanthopurpurin, is an organic compound with formula C 14 H 8 O 4 that occurs in the plant Rubia cordifolia (Indian madder). [1] It is one of ten dihydroxyanthraquinone isomers.
Photostimulated luminescence (PSL) is the release of stored energy within a phosphor by stimulation with visible light, to produce a luminescent signal. X-rays may induce such an energy storage. A plate based on this mechanism is called a photostimulable phosphor (PSP) plate (or imaging plate ) and is one type of X-ray detector used in ...