Activity of FeO in the FeO-MgO-SiO2 System Determined by High Temperature Mas Spectrometry.

Melting Behaviour of Model Lherzolite in the System CaO–MgO–Al2O3–SiO2–FeO at 0·7–2·8 GPa

Fe–Mg exchange is the most important solid solution involved in for Fe–Mg exchange between the coexisting crystalline phases and melt, KdFe–Mg, show a relatively simple and predictable behaviour partial melting of spinel lherzolite, and the system CaO– MgO–Al2O3–SiO2–FeO (CMASF) is ideally suited to explore with pressure and temperature: the coefficients for olivine and spinel do not show signi...

CONTENTS – T through V Distribution of FeO/(FeO+MgO) in Semarkona Chondrules: Implications for Chondrule Formation and Nebular Evolution

Bacterial 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...

Antimycotic Activity of Nanoparticles of MgO, FeO and ZnO on some Pathogenic Fungi

Fungi are important pathogens of vegetables, fruits, cereals, pulses, and other crops. Several management strategies have been used for the control of pathogenenic fungi. Each of these methods has one or other limitations. Due to hazardous effects caused by excessive use of pesticides, scientists in the agricultural field are searching for alternative measures against pesticides. As an alternat...

Possible polytypism in FeO at high pressures

Examination of X-ray diffraction intensities for FeO collected in situ at high pressure and high temperature reveals that the atomic arrangements of FeO in the hexagonal structure are not the same as those in the simple NiAs-type structure (B8) where Fe takes the place of Ni. The observed diffraction intensity can be explained by adding an anti-B8 component (where Fe takes the place of As). Sub...