The oxidation kinetics of a grade 300 maraging steel in air at temperatures ranging from 300 to 600°C have been determined using Auger electron spectroscopy in conjunction with argon ion sputtering. A limited-thickness type of growth was observed up to the relatively high temperature of 480 OC. Above 480 "C, the kinetics were parabolic.A thin gold layer sputtered onto the surface before oxidation resulted in a change in the kinetics from limitedthickness to approximately parabolic growth at temperatures below 480"C, while it remained parabolic above 480 "C.The limited-thickness oxide growth is described in terms of space-charge effects, as outlined by the theory of Fromhold. Tbe insulating properties of a thin mixed spinel oxide present at the metaloxide interface is critical in bringing about the space charge in tbe oxide. A change in the electrical conductivity of the mixed spinel is associated with a change in the oxidation kinetics

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Despite the concerted efforts to develop targeted cancer treatments, these therapies are plagued by the rapid development of resistance and serious adverse drug reactions. Based on the wide clinical use...

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+ Cl-(M) and the hetero-association of M with fluoranthene (F) have been investigated by means of the significant concentration dependence of 1 H NMR chemical shifts as well as by diffusion coefficients obtained from DOSY NMR spectroscopy. The NMR spectroscopic data is only consistent with the formation of a "dimer" M···M aggregate according to 2M h M 2 in acetonitrile at several temperatures, with a calculated K D of ca. 46 Ϯ 7 M -1 at 273.5 K. In the presence of the aromatic molecule fluoranthene, relatively strong, presumably π-cation-type interactions between M and F according

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