Materials Literature
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Abstract Although the process of dolomitization is not well known at present, the requirement of conservation of mass of the chemical constituents of the rock and the interstitial solution places definite limits on the process. Most subsurface waters contain relatively small concentrations of bicarbonate compared to t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCatalyzed Hydrolysis of Sodium BorohydrideArthur. Levy, John B. Brown, and Carl J. LyonsCite this: Ind. Eng. Chem. 1960, 52, 3, 211–214Publication Date (Print):March 1, 1960Publication History Published online1 May 2002Published inissue 1 March 1960https://pubs.acs.org/doi/1…
Diffusion in a polycrystalline body is discussed under the assumption that two interrelated mechanisms consisting of diffusion through the grains and in the boundaries around the grains are dominant in different penetration regions. The general behavior of the average concentration-distribution of diffusant is describ…
Abstract The infrared spectra of doubly oriented films of mercerized ramie and Fortisan crystallites were observed over the 650–3600 cm. −1 frequency range. Polarization properties of the bands were determined. The CH 2 symmetric bending frequency was found to be parallel polarized, from which it was concluded that th…
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Abstract The polarized infrared spectra of crab chitin crystallites, blowfly larval cuticle, lobster tendon, and partially deacetylated lobster chitin have been studied. In addition, the spectra of amorphous deacetylated chitin, deuterated lobster chitin and crystalline N ‐acetylated chitohexaose were obtained and ana…
Fe+ + + and Fe+ + ions in glass have been studied by means of paramagnetic resonance. The correlation of the Fe+ + + concentration with an intense resonance at g=4.27 shows the resonance is due to Fe+ + +. A theory is proposed explaining the observed g value and the implications for the atomic surroundings of Fe+ + +…
Abstract The flow of lead of different purities under conditions of simple shear has been investigated over a wide range of strain, at different stresses, and mostly at a temperature in the neighbourhood of 27 °C. The phenomena have been studied both with unchanged direction of stress and with the direction of stress…
Abstract Type I aluminium films deposited at 0 °C were of relatively low area, ca. 1000 cm2, stable and with a certain porosity since CO uptake was proportional to film weight. Thus a film area could be determined from its weight, since at saturation CO molecules occupy 0·75 of the total surface area given by the B.E.…
It is shown that at least two of the three known peaks in the photoconductivity versus wavelength curve of ${\mathrm{Cu}}_{2}$O are strongly dependent on the oxygen content of the material. The peak near 600 m\ensuremath{\mu} can be shifted from shorter to longer wavelengths by exposing the sample to relatively low ox…
The literature on the mineralogy and petrology of the scapolite family is reviewed. The general formula was examined in the light of 126 analyses from the literature, together with 9 new analyses. Of these 135 analyses, refractive indices were available for 64. Sixty-four of the analyses were rejected as unsatisfactor…
Abstract Elektrochemische Laboruntersuchungen an einem einfachen Modellsystem ergaben, daß für das Verhalten des Kupfers und der Kupfer‐Legierungen im Erdreich zwei Einflüsse: Sättigungszustand und p H ‐Wert des Bodens maßgebend sind. Auf Grund der einfachen Darstellung des Verhaltens des Kupfers und der Kupfer‐Legier…