The surface morphology and chemistry of oxide scales formed on select chromia-forming alumina-forming ferritic steels have been studied after exposure to a dual atmosphere hydrogen air. Localized Fe-rich nodules with whiskers/platelets form at the onset corrosion. initiation growth localized breakdown passivation are attributed presence hydrogen, inclusion iron in passivating scale, subsequent ...

Upon entry into the host, Salmonella enterica strains are presumed to encounter an iron-restricted environment. Consequently, these bacteria have evolved a variety of often-redundant high-affinity acquisition systems to obtain iron in this restricted environment. We have identified an iron transport system that is encoded within the centisome 63 pathogenicity island of Salmonella typhimurium. T...

We discuss how a powerful iron line emission can be produced if ∼ 1− 5 iron rich solar masses are concentrated in the close vicinity of the burst. Recombination, thermal and fluorescent reflection are discussed. We find that recombination suffers the high Compton temperature of the plasma while the other two scenarios are not mutually exclusive and could account for the claimed iron line detect...

Iron deficiency remains a global health issue, and antinutritional factors, such as tannins, are often cited as contributors to the high prevalence of deficiency. Despite this, tannin-rich diets may have potential beneficial cardiovascular and cancer-fighting properties because of the antioxidant activity of tannins. Furthermore, epidemiologic studies and long-term trials involving participants...

The facile ability of iron to gain and lose electrons has made iron an important participant in a wide variety of biochemical reactions. Binding of ligands to iron modifies its redox potential, thereby permitting iron to transfer electrons with greater or lesser facility. The ability to transfer electrons, coupled with its abundance, as iron is the fourth most abundant mineral in the earth's cr...

OBJECTIVES This study was designed to identify macrophage-rich atherosclerotic plaque noninvasively by imaging the tissue uptake of long-circulating superparamagnetic nanoparticles with a positive contrast off-resonance imaging sequence (inversion recovery with ON-resonant water suppression [IRON]). BACKGROUND The sudden rupture of macrophage-rich atherosclerotic plaques can trigger the forma...

We have investigated the phase relations in the iron-rich portion of the iron-silicon (Fe-Si) alloys at high pressures and temperatures. Our study indicates that Si alloyed with Fe can stabilize the body-centered cubic (bcc) phase up to at least 84 gigapascals (compared to approximately 10 gigapascals for pure Fe) and 2400 kelvin. Earth's inner core may be composed of hexagonal close-packed (hc...

Objective: Investigate impact of community based programs for creating nutrition and health awareness of women of child bearing age for prevention of anemia. Design: Intervention comprising of informal meetings, live demonstrations of iron rich recipes from green leafy vegetables and kitchen garden activity. Women with Hb<11 g/dl had to be given iron folic acid tablets and formed the supplement...