Summary. Synthetic mixtures of CaO and F%O 3 fired in air at temperatures in the range 1180 ~ C to 1240 ~ C in some cases lost oxygen and formed ferrous-iron-bearing compounds. Samples after firing were examined by incident light micro-scopy and X-ray diffraction; new powder data are presented

of diverse chemical libraries for combinatorial chemistry and compound selection for High Throughput Screening (HTS). DivCalc is a Windows TM based software that implements a previously published method of diversity calculation [1]. This facilitates sampling of a given data matrix to obtain the most diverse

Abstract The role of reactive oxygen species, with the subsequent oxidative deterioration of biological macromolecules in the toxicities associated with transition metal ions, is reviewed. Recent studies have shown that metals, including iron, copper, chromium, and vanadium undergo redox cycling

nitrogen, phosphorus and iron compounds in the

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The preparat ion of th in films of zirconium oxide and ha fn ium ox ide by decomposition of the diketonate complexes of these metals has been described in two earlier papers. The present paper deals with aspects of film growth. The rate of film growth (R) depends on the substrate temperature

Abstract.- Intermetallic compounds with low densities and high melting temperatures are prime structural material candidates for advanced heat engines. The close link between crystal structure and mechanical properties has led the search for new cubic pseudo-binary transition metal aluminides

along the chains leads to a substantial contribution of the low-spin Rh 4d 3z 2 −r 2 orbitals to the exchange coupling of the extended moments. Interestingly, this mechanism holds for both compounds, even though the coupling is ferromagnetic for the cobalt and antiferromagnetic for the iron compound

material in an amount equivalent to the number of moles of oxygen stored in sulfates or iron oxides accumulated, and a similar number of moles of carbonate minerals was converted to other compounds. As sediments.cycled, degraded organic matter was re-eroded and re-deposited; ferric oxides joined

Virtually all cells and organisms require iron to perform basic cellular processes. In respiration, iron proteins capture energy released from oxidation of food by synthesizing high-energy compounds, such as NADH, that Primers provide a concise introduction into an important aspect of biology