Vitalism -- psychology : The early history of embodied cognition 1740-1920 : the Lebenskraft-debate and radical reality in German science, music, and literature / edited by John A. McCarthy, Stephanie M. Hilger, Heather I. Sullivan, Nicholas Saul
The metaphysical doctrine that the functions and processes of life are due to a vital principle distinct from physicochemical forces and that the laws of physics and chemistry alone cannot explain life functions and processes. Vitalism is opposed to mechanistic materialism. The belief was that matter was divided into two classes based on behavior with respect to heat: organic and inorganic. Inorganic material could be melted but could always be recovered by removing the heat source. Organic compounds changed form upon heating and could not be recovered by removing the heat source. The proposed explanation for the difference between organic and inorganic compounds was the Vitalism Theory, which stated that inorganic materials did not contain the "vital force" of life
A nutritional condition produced by a deficiency of VITAMIN A in the diet, characterized by NIGHT BLINDNESS and other ocular manifestations such as dryness of the conjunctiva and later of the cornea (XEROPHTHALMIA). Vitamin A deficiency is a very common problem worldwide, particularly in developing countries as a consequence of famine or shortages of vitamin A-rich foods. In the United States it is found among the urban poor, the elderly, alcoholics, and patients with malabsorption. (From Cecil Textbook of Medicine, 19th ed, p1179)
Vitamin A deficiency -- Complications. : Vitamin A deficiency : health, survival, and vision / Alfred Sommer, Keith P. West, Jr. ; with James A. Olson, A. Catharine Ross
1996
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Vitamin A Deficiency -- drug therapy : Carotenoids and vitamin A in translational medicine / edited by Olaf Sommerburg, Werner Siems, and Klaus Kraemer
Vitamin A deficiency in children. : Vitamin A deficiency : health, survival, and vision / Alfred Sommer, Keith P. West, Jr. ; with James A. Olson, A. Catharine Ross
Vitamin A -- supply & distribution : Carotenoids and vitamin A in translational medicine / edited by Olaf Sommerburg, Werner Siems, and Klaus Kraemer
2013
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Vitamin A -- Testing. : Retinoids, advances in basic research and therapy : proceedings of the International Dermatology Symposion (IDS), Berlin, October 13-15, 1980 / edited by C.E. Orfanos and O. Braun-Falco ... [and others]
1981
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Vitamin A -- Testing -- Congresses. : Retinoids, advances in basic research and therapy : proceedings of the International Dermatology Symposion (IDS), Berlin, October 13-15, 1980 / edited by C.E. Orfanos and O. Braun-Falco ... [and others]
Retinol and derivatives of retinol that play an essential role in metabolic functioning of the retina, the growth of and differentiation of epithelial tissue, the growth of bone, reproduction, and the immune response. Dietary vitamin A is derived from a variety of CAROTENOIDS found in plants. It is enriched in the liver, egg yolks, and the fat component of dairy products
