Materials Literature
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The status of aluminum and iron in 18 Ando soil samples was analyzed by selective dissolution analyses using 0.1 M Na4P2O7, dithionite-citrate, and 0.15 M oxalate-oxalic acid as reagents. The results were correlated with the phosphorus adsorption from NaH2PO4 and Na2HPO4 solutions (<0.2 M). A linear multiple regressio…
Summary EDTA extracts (pH 7.5–10.5) from a Danish sandy loam showed no significant (95% level) increase in amounts of aluminium, calcium, iron, and magnesium between three and nine months' shaking. The amounts were independent of the soil: solution ratio (1:10–1:50), the EDTA concentration (0.01 M–0.2 M), and crushing…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInvestigation of zeolite frameworks by vibrational properties. 2. The double-six-ring in group 4 zeolitesC. S. BlackwellCite this: J. Phys. Chem. 1979, 83, 25, 3257–3261Publication Date (Print):December 1, 1979Publication History Published online1 May 2002Published inissue 1…
Following a major shortage of 99Mo in the 2009–2010 period, concern grew that the aging reactor production facilities needed to be replaced. Most producers were using highly enriched 235U (HEU) as the target material. The Organisation for Economic Co-...Read More
Abstract The amino‐terminal telopeptide of the collagen α1(I) chain has a highly conserved sequence. This sequence was analyzed by the Chou‐Fasman criteria, and a folded β‐sheet conformation, including a β‐turn, was predicted. This folded “hairpin” region favors both ionic and hydrophobic intermolecular interactions w…
Novel neutral monomeric five-coordinate manganese and iron dinitrosyl compounds incorporating asymmetric tridentate anionic gallate ligands are described. The crystal structure of the formally "19-electron" iron complex [Me 2 Ga(N 2 C 5 H 7 )(OCH 2 CH 2 NMe 2 )]Fe(NO) 2 has been determined. Crystals of [dimethyl(N,N-d…
Ca8[Al12O24](WO4)2, formerly believed to be cubic, is tetragonal. It forms a superstructure with the usual 9 A unit cell of sodalites.
Previously published chemical and physical data for the Urrbrae loam, and the conclusions drawn from these data concerning profile development, have been appraised. Translocation of clay seems likely to have played a significant role in the development of the Urrbrat: loam, a red-brown earth (calcic rhodoxeralf). Both…
An empirical rigid-projectile analysis has been developed for non- normal impact and penetration into soil and rock. The soil penetration analysis uses Young's S-number as the penetrability index. The rock penetration analysis calculates resistance-to-penetration using density, strength, and Rock Quality Designation.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGroup 3A and 4A substituted AB5 hydridesM. Mendelsohn, D. Gruen, and A. DwightCite this: Inorg. Chem. 1979, 18, 12, 3343–3345Publication Date (Print):December 1, 1979Publication History Published online1 May 2002Published inissue 1 December 1979https://pubs.acs.org/doi/10.10…
The inception of ac treeing has been investigated in various cast epoxy resins, using a needle-plane test configuration. Mechanical stress due to shrinkage in the curing process is present at the needle tip, and in some cases causes micro-cracks. Lower tree inception voltages were observed in mechanically stressed spe…
The effect of heating on the substructure of heavily rolled 70:30 brass is described. Colonies of very fine ‘recovery’ twins (0.002–0.01 μm thick) develop in the shear bands at an early stage of heating and subsequently grow lengthwise in the matrix. Dislocation loss from the matrix regions associated with the recover…
Electrical conductivities and thermoelectric power of the complexes of phthalocyanine with halogen (iodine or bromine) have been studied. The electrical conductivity of phthalocyanines exposed to halogen vapor increases drastically up to 10 to 11 orders of magnitude, and its activation energies of the complexes with h…
Absorption and magnetic circular dichroism spectroscopy have been used to study the cubic crystal Cs2NaTmCl6. Transitions between the Oh crystal field levels in 3 H 6 and 3 H 4, 3 F 3, 3 F 2, 1 G 4 and 1 D 2 have been observed and assigned. Rich vibrational structure was observed in all transitions and the vibrations…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymer-bound sulfonylhydrazine functionality. Preparation, characterization, and reactions of copoly(styrene-divinylbenzenesulfonylhydrazine)David W. Emerson, Richard R. Emerson, Surendra C. Joshi, Elizabeth M. Sorensen, and James E. TurekCite this: J. Org. Chem. 1979, 44,…
A bstract The VLF response of laterally inhomogeneous and anisotropic models is calculated numerically using the finite element method. Some results are presented for a slab model in terms both of the polarization parameters, i.e., the tilt angle and ellipticity of the magnetic polarization ellipse, and the amplitude…
Magnetoelectric effect of the low temperature phase of magnetite was measured at 77 K. It was confirmed that the magnetic crystal symmetry at 77 K is triclinic but the breaking of the mirror symmetry parallel to the (1\bar10) plane is very small. Dispersion of the magnetoelectric effect was observed with the relaxatio…
Small bore Inconel Alloy 600(1) tubing exhibits classical crevice behavior in an appropriate high temperature aqueous environment and is therefore useful for studying the crevice chemistry of this alloy in systems which are not readily amenable to crevice simulation by external electrochemical control. Experiments in…
The magnetic structure of Mn 4 N is shown to be not exactly of ferrimagnetic collinear type. Experiments using, separately, non-polarised and polarised neutrons reveal the existence of a small triangular magnetic component on each of the Mn atoms that are at the centres of the faces of the cubes.
The effect of pronounced pairing of oppositely charged defect centres on a.c. conduction in chalcogenide glasses is discussed. It is concluded that for this non-random case, the conductivity should be fairly accurately linear with no temperature dependence for some typical chalcogenide glasses. However, for certain co…