Materials Literature
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The oxidation of iron was investigated by Rutherford backscattering spectroscopy at 573 K under the oxygen partial pressure from 10−1 to 105 Pa for 3~24 h. In the first stage of oxidation, thickness of the oxide film reached the maximum around 1 Pa. In the second stage the oxidation obeyed the parabolic rate law. From…
Abstract Crystal absorption spectra of the two modifications of the perylene-TCNQ (7,7,8,8-tetracyanoquinodimethan) complex were derived from reflection spectra by the Kramers-Kronig transformation and are discussed in relation to the differences in the crystal structures. The spectral response of photoconduction does…
Abstract The optical absorption and emission spectra of Tb 3+ in TbPO 4 in its tetragonal structure above 2.3 K are studied to obtain the energies, symmetry types, and wave functions of mainly the lowest crystal field components of the ground term 7 F 6 . Crystal field parameters are evaluated and used to calculate th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolyurethane interpenetrating polymer networks (IPN's) synthesized under high pressure. 3. Morphology and Tg behavior of polyurethane-polystyrene semi-IPN's and linear blendsDoo Sung Lee and Sung Chul KimCite this: Macromolecules 1984, 17, 11, 2222–2227Publication Date (Prin…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanism of electrochemical reduction of the (5,10,15,20-tetraphenylporphinato)dihydroxophosphorus(V)cationCarl A. Marrese and Carl J. CarranoCite this: Inorg. Chem. 1984, 23, 24, 3961–3968Publication Date (Print):November 1, 1984Publication History Published online1 May 20…
An Al-6 wt-%Ni alloy containing a volume fraction of 0.1 of 1.1 μm dia. particles was deformed 95% by cold rolling and annealed. Recrystallization was nucleated in the vicinity of the particles, and the orientation of the new grains was investigated by X-ray and electron diffraction. The orientation of the recrystalli…
Bisphthalonitrile monomers were cured neat, with nucleophilic and redox coreactants, or in combination with a monofunctional model compound. Dynamic mechanical measurements on the resulting polymers from −150°C to +300°C turn up several differences attributable to differences in network structure. Rheovibron results w…
Fundamental operating parameters and column performance have been measured on the interlinked, four-column cryogenic distillation system at the Tritium Systems Test Assembly. Using mixtures of hydrogen and deuterium, data have been gathered and are given here on liquid holdup in the column packing and liquid level in…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTemperature dependence of the quantum yields for the photoanation of Ru(bpy)2L22+ complexesDavid V. Pinnick and Bill DurhamCite this: Inorg. Chem. 1984, 23, 24, 3841–3842Publication Date (Print):November 1, 1984Publication History Published online1 May 2002Published inissue…
We devised a positive selection procedure for bacterial mutants incapable of producing acid from sugars by fermentation. The method relied on the production of elemental bromine from a mixture of bromide and bromate under acidic conditions. When wild-type Escherichia coli cells were plated on media containing a fermen…
Anodic films on iron formed in a forced convection system in the transpassive potential region in nitrate electrolytes at current densities up to 40 A/cm 2 have been studied by in situ coulometry and ex situ Auger electron spectroscopy (AES) and angle‐resolved x‐ray photoelectron spectroscopy (XPS). Qualitatively simi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDynamics of spin-state interconversion and cooperativity for ferric spin-crossover complexes in the solid state. 2. Perturbations of the fast spin-flipping N4O2 complex [Fe(SalAPA)2]ClO4Wayne D. Federer and David N. HendricksonCite this: Inorg. Chem. 1984, 23, 24, 3870–3877P…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhytochemical and Biological Screening of Saudi Medicinal Plants, Part 6. Isolation of 2α-Hydroxyalantolactone the Antileukemic Principle of Francoeuria crispaMohammed A. Al-Yahya, Saad Khafagy, Amir Shihata, John F. Kozlowski, Mikhail D. Antoun, and John M. CassadyCite this…
Abstract Implications for cord adhesion from this study are as follows: 1) In the low-adhesion compounds containing low cobalt naphthenate and sulfur levels, adhesion increases with decreasing cobalt naphthenate:sulfur ratio, at a given amount of cobalt naphthenate. 2) Under mild curing condition (160°C, 20 min), high…
A theoretical model is developed to describe the velocity of fragments generated when a gas-pressurized vessel disintegrates. The predictions are compared with new and existing experimental data for spherical and cylindrical vessels and are shown to be an improvement over the widely used empirical correlation develope…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNew organoiron synthons. cis- and trans-Vinylene dication equivalentsMarianne Marsi and Myron RosenblumCite this: J. Am. Chem. Soc. 1984, 106, 23, 7264–7266Publication Date (Print):November 1, 1984Publication History Published online1 May 2002Published inissue 1 November 198…
Boron films of 0.1–1.5 μm thickness have been prepared on sapphire, silicon, and tantalum as substrates by the pyrolysis of decaborane in the molecular flow region (≦10 −4 torr) and in a temperature range of 350°–1200°C. It is found that the deposition rate of the boron films is proportional to the decaborane partial…
A method for analyzing a magnetic damper (eddy current brake) consisting of a cylindrical magnet and a plate conductor of arbitrary shape is considered. Since the magnetic flux is a function of the position, the analytical solution to obtain the eddy current, braking force, and damping coefficient is obtained by divid…
Abstract Photocrosslinkable poly(2‐vinyloxyethyl cinnamate)'s with substituents in para position of cinnamoyl moieties were prepared cationically. Polymerizability of the monomers was markedly governed by the substituent and the glass transition temperatures of the polymers varied in the range of about 0 to 72°C. The…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular stereochemistry of low-spin five-coordinate phenyl(meso-tetraphenylporphyrinato)iron(III)Pascal DoppeltCite this: Inorg. Chem. 1984, 23, 24, 4009–4011Publication Date (Print):November 1, 1984Publication History Published online1 May 2002Published inissue 1 November…