Results 241 to 250 of about 653,448 (286)
The Detection of Trace Metal Contaminants in Organic Products Using Ion Current Rectifying Quartz Nanopipettes. [PDF]
Anal ChemFarrell EB +5 more
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Trace Metal Bioaccumulation in Feral Pigeons (Columba livia f. domestica) and Rooks (Corvus frugilegus) Residing in the Urban Environment of Iasi City, Romania. [PDF]
ToxicsIacob D +8 more
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American Journal of Hematology, 1981
AbstractThe trace metals represent an extremely small part of the total mass of the organism. In spite of this, these elements appear to play major roles in metabolism. At the level of the hematopoietic system, specific roles can be identified for iron, copper, zinc, and cobalt.
C J, Deur, M J, Stone, E P, Frenkel
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AbstractThe trace metals represent an extremely small part of the total mass of the organism. In spite of this, these elements appear to play major roles in metabolism. At the level of the hematopoietic system, specific roles can be identified for iron, copper, zinc, and cobalt.
C J, Deur, M J, Stone, E P, Frenkel
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Trace metals and melanogenesis
Experientia, 1983Emission spectroscopic analysis of amphibian and mammalian skin ash for the study of trace metals shows that nickel, lead and tin may play some role in the pigmentation-depigmentation process.
D P, Chakraborty +3 more
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Philosophical Transactions of the Royal Society of London. B, Biological Sciences, 1979
The topic of this paper is extremely broad, and to allow more useful discussion, emphasis is placed on trace (less than 1 mg/1) metals in fresh surface waters and in drinking waters. An attempt is made to give a broad overview of current knowledge, problems and research with particular reference to the following: (1) metals of interest, current ...
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The topic of this paper is extremely broad, and to allow more useful discussion, emphasis is placed on trace (less than 1 mg/1) metals in fresh surface waters and in drinking waters. An attempt is made to give a broad overview of current knowledge, problems and research with particular reference to the following: (1) metals of interest, current ...
openaire +2 more sources
Trace Metals in Neuropsychiatry
British Journal of Psychiatry, 1983Naylor's recent hypothesis that vanadium ‘poisoning’ could be a factor in the severity of manic-depressive illness drew attention to the normal and even essential presence of vanadium in the diet, and in human living tissues. The whole brain may contain only about 45 micrograms of vanadium (Underwood, 1977; 1979), as against 500 micrograms of manganese,
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1992
Publisher Summary Metals and other elements of economic interest are deposited when geochemical conditions reduce their mobility. Deposits range in quality from the nearly pure element, such as native copper, to highly disseminated deposits of marginal economic value. In addition, there are natural background levels of nearly all the elements in what
Mark M. Benjamin, Bruce D. Honeyman
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Publisher Summary Metals and other elements of economic interest are deposited when geochemical conditions reduce their mobility. Deposits range in quality from the nearly pure element, such as native copper, to highly disseminated deposits of marginal economic value. In addition, there are natural background levels of nearly all the elements in what
Mark M. Benjamin, Bruce D. Honeyman
openaire +1 more source
Chemical & Engineering News Archive, 2013
In 1905, the U.S. Pharmacopeial Convention, the nonprofit standards-setting organization known as USP, introduced a method to check for heavy metals in U.S. pharmaceuticals. More than 100 years later, drug manufacturers still use the same chemistry to determine whether the level of 10 metal impurities is acceptable in their products. Exposure to metals
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In 1905, the U.S. Pharmacopeial Convention, the nonprofit standards-setting organization known as USP, introduced a method to check for heavy metals in U.S. pharmaceuticals. More than 100 years later, drug manufacturers still use the same chemistry to determine whether the level of 10 metal impurities is acceptable in their products. Exposure to metals
openaire +1 more source