Carotenoids inNiphargus casimiriensisSkalski (Amphipoda) from artesian wells
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Carotenoids in Niphargus casimiriensis Skalski (Amphipoda) from artesian wells
Carotenoids are some of the commonest pigments found in nature. They are produced only by plants, both autotrophic and heterotrophic, whereas animals obtain them through the food they eat. These pigments may, however, in the latter undergo further conversion as a result, for example, of oxidation. Various functions have been ascribed to carotenoids ranging from their participation in the photos...
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we report engineering experiences from the critical task of relief well installation under high artesian flow conditions at the downstream toe of the karkheh earth dam, iran. due to the establishment of excessive uplift pressure at the downstream toe of the karkheh dam, installation of a series of new relief wells was considered to permanently relieve part of these pressures. the mentioned upli...
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Ampithoidae is a family of marine Amphipoda with approximately 230 species, belonging to 16 genera. The family has a worldwide distribution as algal dwellers. So far only five species are known from New Zealand. Recent collections and examination of historic collection material added two new species, which are described herein. An overview of and a key to the New Zealand Ampithoidae is provided.
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Ampeliscidae has been recorded extensively from Icelandic waters by many detailed reports. Material collected from the IceAGE (Icelandic marine animals: Genetics and Ecology) 1 and 2 expeditions has resulted in a reasonably expected collection of ampeliscid amphipod species and distributions. However, as seems to be the trend in amphipod systematics, there are ever-present species complexes. Re...
متن کاملTransition from transient Theis wells to steady Thiem wells
Simple analytical calculations of groundwater flow around wells usually employ the Thiem well formula for steady calculations and the Theis formula for transient calculations. The superposition principle can be used with both formulas and even for combinations of both formulas. It is generally assumed that flow converges to a steady state when the boundary conditions remain constant for a long ...
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ژورنال
عنوان ژورنال: International Journal of Speleology
سال: 1978
ISSN: 0392-6672,1827-806X
DOI: 10.5038/1827-806x.9.2.6