Results 211 to 220 of about 108,208 (269)
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Journal of Toxicology: Clinical Toxicology, 1999
Chromium occurs primarily in the trivalent state (III), which is the most stable form, or in the hexavalent state (VI), which is a strong oxidizing agent. Elemental chromium (0) does not occur naturally on earth. Trivalent chromium (III) is an essential trace metal necessary for the formation of glucose tolerance factor and for the metabolism of ...
Donald G. Barceloux, Donald Barceloux
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Chromium occurs primarily in the trivalent state (III), which is the most stable form, or in the hexavalent state (VI), which is a strong oxidizing agent. Elemental chromium (0) does not occur naturally on earth. Trivalent chromium (III) is an essential trace metal necessary for the formation of glucose tolerance factor and for the metabolism of ...
Donald G. Barceloux, Donald Barceloux
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Speciation of chromium in chromium yeast
World Journal of Microbiology and Biotechnology, 2014High-performance liquid chromatography was used to separate Cr(III) and Cr(VI) in samples with detection by inductively coupled plasma mass spectrometry(ICP-MS). The separation was achieved on a weak anion exchange column. The mobile phase was pH 7.0 ammonium nitrate solution.
Xuena, Guo +4 more
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The American Journal of Clinical Nutrition, 1993
Chromium metabolism of lactating women was evaluated by measuring diet, breast milk, urine, and serum chromium in 17 subjects 60 d postpartum. Breast milk chromium concentration was similar for the 3 d of collection with a mean +/- SE concentration of 3.54 +/- 0.40 nmol/L (0.18 ng/mL).
R A, Anderson +5 more
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Chromium metabolism of lactating women was evaluated by measuring diet, breast milk, urine, and serum chromium in 17 subjects 60 d postpartum. Breast milk chromium concentration was similar for the 3 d of collection with a mean +/- SE concentration of 3.54 +/- 0.40 nmol/L (0.18 ng/mL).
R A, Anderson +5 more
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Physical Review B, 1986
The thermal-expansion data of White, Roberts, and Fawcett for Cr and antiferromagnetic CrV alloys measured relative to paramagnetic ${\mathrm{Cr}}_{95}$${\mathrm{V}}_{5}$ up to temperature 700 K are analyzed. The magnetovolume in the ordered state is found to be proportional to the mean-square magnetic moment and their ratio, being proportional to the ...
, Fawcett, , Kaiser, , White
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The thermal-expansion data of White, Roberts, and Fawcett for Cr and antiferromagnetic CrV alloys measured relative to paramagnetic ${\mathrm{Cr}}_{95}$${\mathrm{V}}_{5}$ up to temperature 700 K are analyzed. The magnetovolume in the ordered state is found to be proportional to the mean-square magnetic moment and their ratio, being proportional to the ...
, Fawcett, , Kaiser, , White
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2012
Nickel (Ni) and chromium (Cr) are elements naturally present in all rock types and present in the pedosphere in a range from trace amounts to relatively high concentrations, as compared to other trace elements. Particularly high Ni and Cr concentrations are found in serpentine rocks and soils, originating from this rock type and colonized by a ...
GONNELLI, CRISTINA, RENELLA, GIANCARLO
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Nickel (Ni) and chromium (Cr) are elements naturally present in all rock types and present in the pedosphere in a range from trace amounts to relatively high concentrations, as compared to other trace elements. Particularly high Ni and Cr concentrations are found in serpentine rocks and soils, originating from this rock type and colonized by a ...
GONNELLI, CRISTINA, RENELLA, GIANCARLO
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Dislocation structure in chromium, chromium-rhenium, and chromium-iron alloys
Journal of the Less Common Metals, 1966Abstract Electron-transmission microscopy experiments were performed on chromium, chromium-rhenium, and chromium-iron alloys to investigate the effect of alloying on dislocation multiplication and configuration. It was found that the increase of dislocation density with strain was largely independent of composition, but that large alloying additions ...
C.N. Reid, A. Gilbert
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Chromium–Chromium Bonding in Binuclear Azulene Chromium Carbonyl Complexes
European Journal of Inorganic Chemistry, 2010AbstractThe experimentally known cis‐[(η5,η5‐C10H8)Cr2(CO)6] structure with a rather long formal Cr–Cr single bond of about 3.3 Å is predicted by density functional theory to be the lowest energy C10H8Cr2(CO)6 structure. However, a trans‐[(η7,η5‐C10H8)Cr2(CO)6] structure lies in energy within ca. 4 kcal/mol of this global minimum.
Hongyan Wang +4 more
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The exchange of chromium between chromium (II) and chromium (III) ions
Recueil des Travaux Chimiques des Pays-Bas, 1954AbstractA rapid exchange of radioactive chromium has been observed between Cr+++ and Cr++ ions.
H. van der Straaten, A. H. W. Aten
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Relative chromium response as an indicator of chromium status
The American Journal of Clinical Nutrition, 1978Twenty-seven women ages 40 to 75 were divided into normal (n = 15) and hyperglycemic (n = 12) groups on the basis of 3-hr glucose tolerance tests. Each subject received 5 g of brewer's yeast extract containing 4 microgram of chromium daily for 3 months.
V J, Liu, J S, Morris
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Removal and recovery of chromium and chromium speciation with MINTEQA2
Talanta, 2002Chromium(III) is commonly found in large quantities in tannery wastewaters. For this reason, the recovery of the chromium content of these wastewaters is necessary for environmental protection and economic reasons. Removal and recovery of chromium were carried out by using ion exchange resins.
Kocaoba, Sevgi, Akçin, Göksel
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