منابع مشابه
Electron transfer at the mineral/water interface: Selenium reduction by ferrous iron sorbed on clay
1 Environmental Geochemistry Group, LGIT-OSUG, Grenoble University, 38041 Grenoble, Cedex 9, France 2 Rossendorf Beamline at ESRF, Grenoble, France, and Institute of Radiochemistry, FZR, Dresden, Germany 3 BRGM, Environment and Process Division, 3 avenue Claude Guillemin, F-45060 Orléans Cedex 2, France 4 Laboratoire de Physique de l’Etat Condensé UMR CNRS 6087, Université du Maine, F-72085 Le ...
متن کاملOlfactory ferric and ferrous iron absorption in iron-deficient rats.
The absorption of metals from the nasal cavity to the blood and the brain initiates an important route of occupational exposures leading to health risks. Divalent metal transporter-1 (DMT1) plays a significant role in the absorption of intranasally instilled manganese, but whether iron uptake would be mediated by the same pathway is unknown. In iron-deficient rats, blood (59)Fe levels after int...
متن کاملComplexes of Ferrous Iron With Tannic Acid
Solutions of tannic (digallic) acid at concentrations of 5 or 50 parts per million reduce dissolved ferric iron to the ferrous state when the pH is less than 4. In solutions with a pH of 4 or more, a black material containing ferric iron and tannic acid is precipitated. In a solution containing 500 parts per million of tannic acid, a ferrous complex forms at a pH of more than 5. This complex is...
متن کاملdetermination of maximal singularity free zones in the workspace of parallel manipulator
due to the limiting workspace of parallel manipulator and regarding to finding the trajectory planning of singularity free at workspace is difficult, so finding a best solution that can develop a technique to determine the singularity-free zones in the workspace of parallel manipulators is highly important. in this thesis a simple and new technique are presented to determine the maximal singula...
15 صفحه اولBacterial ferrous iron transport: the Feo system.
To maintain iron homeostasis within the cell, bacteria have evolved various types of iron acquisition systems. Ferric iron (Fe(3+)) is the dominant species in an oxygenated environment, while ferrous iron (Fe(2+)) is more abundant under anaerobic conditions or at low pH. For organisms that must combat oxygen limitation for their everyday survival, pathways for the uptake of ferrous iron are ess...
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ژورنال
عنوان ژورنال: NIPPON KAGAKU KAISHI
سال: 1947
ISSN: 0369-4208,2185-0909
DOI: 10.1246/nikkashi1921.68.94