Search for dissertations about: "cis trans"
Showing result 16 - 20 of 121 swedish dissertations containing the words cis trans.
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16. The molecular biology of retinoid metabolism : identification of an 11-cis retinol dehydrogenase in the retinal pigment epithelium
Abstract : Vitamin A derivatives (retinoids) are essential molecules in the course of embryonic development, postnatal growth and adult physiology. The physiological functions of retinoids are thought to be mediated mainly by retinoic acid which regulates the expression of various genes, and 11-cis retinaldehyde, which is the common chromophore of visual pigments. READ MORE
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17. Organic photochemistry : diabatic and adiabatic cis-trans isomerizations and energy transfer processes in compounds having two carbon-carbon double bonds
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18. The thermal cis-trans isomerization of azobenzene, stilbene, N-benzylideneaniline and some of their derivatives in the vapour phase at elevated temperatures studied by flash photolysis
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19. Content and In Vitro Accessibility of Provitamin. A Carotenoids in Some Tanzanian Vegetables and Fruits Effects of Traditional Processing and Preparation, and Influence on Vitamin A Status
Abstract : Vitamin A deficiency is among the major nutritional problems in Tanzania as in many developing countries. It mainly affects children and pregnant and lactating women. The basic cause of this problem is related to the diet, which contains little preformed vitamin A and plant foods with a low content and bioavailability of provitamin A carotenoids. READ MORE
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20. Retinoids and vitamin D in skin and parathyroid glands
Abstract : Vitamin D3 (VitD3) and retinoids are important factors involved in differentiation and proliferation in many cell systems. Their effects in skin, where retinoids and vitamin D are known to be crucially involved in keratinocyte differentiation and function,, and in the parathyroid, the overall regulatory organ in calcium homeostasis were studied. READ MORE