Injection-level dependent recombination lifetime measurements of iron-diffused, boron-doped silicon wafers of different resistivities are used to determine the electron and hole capture cross sections of the acceptor level of iron–boron pairs in silicon. The relative populations of iron–boron pairs and interstitial iron were varied by exposing the samples to different levels of illumination pri...

Modification of low density lipoproteins by human arterial smooth muscle cells was characterized by increased electrophoretic mobility and increased content of malondialdehyde-like oxidation products reactive with thiobarbituric acid. Lipoprotein modification was promoted by micromolar concentrations of iron or copper in the culture medium and was metal ion concentration- and time-dependent. Th...

The low/ultralow-velocity zones in the Earth's mantle can be explained by the presence of partial melting, critically depending on density contrast between the melt and surrounding solid mantle. Here, first-principles molecular dynamics simulations of (Mg, Fe) O ferropericlase in the solid and liquid states show that their densities increasingly approach each other as pressure increases. The is...

We investigated the effects of dietary iron deficiency on bone metabolism by measuring markers of bone turnover in rats. Twelve 3-week-old male Wistar-strain rats were fed a control diet or an iron-deficient diet for 4 weeks. Dietary iron deficiency decreased hemoglobin concentration and increased heart weight. Serum osteocalcin concentration, bone mineral content, bone mineral density, and mec...

In the article, " Impact of iron overload on interleukin-10 levels, biochemical parameters and oxidative stress in patients with sickle cell anemia " by Barbosa et al. , the authors measured the levels of several biochemical blood components as well as oxidative stress status and interleukin 10 (IL-10) of a cross-sectional population of 30 sickle cell anemia patients, randomly selected of both ...

INTRODUCTION .......................................................................................................... 123 MEASUREMENTS OF DIETARY BIOAVAILABILITY OF IRON ...................... 124 Earlier Methods .......................................................................................................... 124 Extrinsic Tag Method .....................................................

OBJECTIVE This study investigates the nutritional factors that determine the absence of anemia in infants from families with a low socioeconomic background submitted to a nutrition intervention program, as well as iron intake according to recommendations. METHODS The study included 369 children from a cohort of inhabitants of São Leopoldo, state of Rio Grande do Sul, Brazil, who were randomiz...

The electronic properties of an unusually redox-rich iron system, [PhBP3]FeONx (where [PhBP3] is [PhB(CH2PR2)3] ), are explored by Mössbauer, EPR, magnetization, and density-functional methods to gain a detailed picture regarding their oxidation states and electronic structures. The complexes of primary interest in this article are the two terminal iron(IV) nitride species, [PhBP3]Fe'N (3a) and...