Materials Literature
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The beta phase of FeTiD is shown to be orthorhombic with lattice parameters a=2.956+or-0.004 AA, b=4.543+or-0.006 AA and c=4.388+or-0.006 AA. The deuterium atoms are ordered on certain octahedral interstitial sites with two nearest-neighbour iron atoms.
By applying a slip-line fields solution for general yielding, which includes the tup indenter for Charpy V-notch and precracked Charpy tests, estimates of high loading-rate yield stress values can be obtained. These values of yield stress are of particular interest for loading-rate sensitive materials such as low stre…
Density matrices defined with respect to a finite basis set are considered as elements in a vector space. A basis set is introduced in the space whose elements are Hermitian matrices. By a suitable transformation of the basis, one component only will contribute to the trace, so the space of unit trace matrices is a tr…
An energy method for calculations in fabric mechanics is described. The aim behind the development of this method was to find an approach that could be applied in a uniform manner to a variety of fabric structures and types of deformation. In the first part of the paper, the principle of the method is described for th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxygen binding to cobalt porphyrinsJames P. Collman, John I. Brauman, Kenneth M. Doxsee, Thomas R. Halbert, Susan E. Hayes, and Kenneth S. SuslickCite this: J. Am. Chem. Soc. 1978, 100, 9, 2761–2766Publication Date (Print):April 1, 1978Publication History Published online1 M…
ADVERTISEMENT RETURN TO ISSUEPREVArticlePhotochromism and electrochromism in amorphous transition metal oxide filmsRichard J. Colton, Alberto M. Guzman, and J. Wayne RabalaisCite this: Acc. Chem. Res. 1978, 11, 4, 170–176Publication Date (Print):April 1, 1978Publication History Published online1 May 2002Published inis…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfrared spectra of argon matrix-isolated alkali halide salt/water complexesBruce S. AultCite this: J. Am. Chem. Soc. 1978, 100, 8, 2426–2433Publication Date (Print):April 1, 1978Publication History Published online1 May 2002Published inissue 1 April 1978https://pubs.acs.org…
The Subcommittee on the Phototrophic Bacteria of the International Committee on Systematic Bacteriology (ICSB) of the International Association of Microbiological Societies (IAMS) proposes unanimously to the ICSB that the nomenclature of the cyanobacteria (cyanophytes, blue-green algae) shall be governed as of 1 Janua…
1. Four principal endoglucanase components of Trichoderma koningii cellulase were separated and purified by gel filtration on Sephadex G-75, ion-exchange chromatography on DEAE- and sulphoethyl-Sephadex and isoelectric focusing. 2. All four endoglucanases hydrolysed CM-cellulose, H3PO4-swollen cellulose, cellotetraose…
Abstract Under conditions of plasma polymerization, we are dealing with the “reactive” or “self‐exhausting” rather than the “nonreactive” or “non‐self‐exhausting” gas phase (plasma). Therefore, many parameters that define the gas phase, such as system pressure and monomer flow rate, which are measured in the nonplasma…
The diffusive growth rate of a grain boundary cavity is calculated under conditions where vacancies are created non-uniformly across the boundary. Away from the boundary, power-law creep relaxes the strain due to the diffusive atom plating which occurs preferentially near the cavity and allows increased growth rates.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTX-ray photoelectron spectroscopy of alkylaminesilanes bound to metal oxide electrodesP. R. Moses, Larry M. Wier, John C. Lennox, H. O. Finklea, J. R. Lenhard, and Royce W. MurrayCite this: Anal. Chem. 1978, 50, 4, 576–585Publication Date (Print):April 1, 1978Publication Hist…
In device-manufacturing technology, it is important to understand why dielectric films crack. With this objective in mind, we have constructed an apparatus for measurement of thermal stresses in thin films (25–500 °C), obtained results on various reactively plasma deposited (RPD) Si-N and CVD SiO2 films, and developed…
Abstract The core levels of a series of 83 homopolymers have been studied by electron spectroscopy for chemical analysis (ESCA). Comparisons of the experimentally determined core‐level binding energies with theoretical calculations using the ground‐state potential model in the complete neglect of differential overlap…
Abstract A stable porous system consisting of montmorillonite cross-linked by Al-hydroxide oligomers was synthesized by reacting at room temperature an aqueous solution of such oligomers with a unit-layer dispersion of montmorillonite. The resulting cross-linked montmorillonite (Al-CLM) is a nonswelling material, show…
Cell suspensions of Bacteroides fragilis were allowed to ferment glucose and lactate labeled with (14)C in different positions. The fermentation products, propionate and acetate, were isolated, and the distribution of radioactivity was determined. An analysis of key enzymes of possible pathways was also made. The resu…
Many crystals may be regarded as made of layer modules that are chemically distinct and that in different crystals may occur in different pioportions, giving rise to polysomatic series. The humites constitute a classic example, as do certain phyllosilicates and hydroxides. Amphiboles, in particular,_ may be factored b…
This paper surveys the characteristics of threshold switching systems and examines the evidence for threshold switching as an electronic process. A semiquantitative model is proposed for the nature of the ON---state. The OFF---ON transition is also discussed in the light of recent experimentation, as are the principal…
The hydrogen content of glow-discharge-deposited silicon nitride (SiN) films made at 330–350 °C has been determined. Preparation conditions were varied to produce a range of compositions of Si/N=0.7–1.4. Quantitative hydrogen profiling of the samples was carried out using the resonant nuclear reaction 15N+H→12C+4He+γ…
Existing knowledge about Scherrer constants is reviewed and a summary is given of the interpretation of the broadening arising from small crystallites. Early work involving the half-width as a measure of breadth has been completed and Scherrer constants of simple regular shapes have been determined for all low-angle r…