Materials Literature
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Recent lifting of the security restrictions now permits publication of measurements of various effects of pressure on plutonium made during the war. Compressions on the alpha phase were measured at room temperature to 40 000 kg/cm2 in one apparatus and to 100 000 in another. The total volume compression under 100 000…
A systematic experimental study has been made of the effect of adding small amounts of gold to copper on the dislocation damping in copper measured at 37 kc in longitudinal resonance. The results have been classified in terms of the dependence of the damping on strain amplitude and time with temperature and compositio…
Abstract The effects of pH and concentration on foam separation of the protein bovine serum albumin (BSA) from solution has been studied. All results agree, at least qualitatively, with theory. BSA maximum enrichments were observed at the isoelectric pH and enrichment ratio was found to increase with decreasing protei…
Abstract On the basis of our experimental data and a detailed kinetic analysis, the following mechanism of hydrogen ion catalysis is proposed for polyesterification as well as for the simple esterification reactions: magnified image The kinetic equation in terms of [COOH] (= C ) is where C 0 = [COOH] and r = [COOH]/[O…
A new crystalline variety of B 2 O 3 has been prepared at pressures above 22,000 atmospheres and above 400°C. The properties are listed. These moderate pressures also are sufficient to catalyze the crystallization of the more common hexagonal form from B 2 O 3 glass. Pressures, however, of up to 50,000 atmospheres wil…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of Hydrothermal Quartz Crystallization1R. A. LaudiseCite this: J. Am. Chem. Soc. 1959, 81, 3, 562–566Publication Date (Print):February 1, 1959Publication History Published online1 May 2002Published inissue 1 February 1959https://pubs.acs.org/doi/10.1021/ja01512a013h…
From a single crystal of manganese ferrite, specimen cores have been cut which are capable of supporting single domain walls. These cores have been proportioned in two ways, one favoring a movable (110) wall, the other favoring a wall system perpendicular to the (110) plane. The basic experiment consists in applying r…
The room-temperature optical transmission spectra of pure and doped SrTi${\mathrm{O}}_{3}$ crystals have been studied after heating them in oxygen and vacuum; spectral measurements were made in the quantum energy range from 0.1 to 3.4 ev.A blue color, with strong attendant absorption in the infrared, can be induced in…
To furnish a greater choice of film materials for application in optical multilayer coatings, the optical properties of evaporated rare earth compounds such as Y2O3, La2O3, Pr6O11, Nd2O3, Sm2O3, Gd2O3, LaF3, NdF3, and CF3 were studied in the wavelength region from 0.22 micron to 2 microns. The materials were evaporate…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Structure of Dihydrogen Ethylenediaminetetraacetatoaquonickel(II)1Gordon S. Smith and J. L. HoardCite this: J. Am. Chem. Soc. 1959, 81, 3, 556–561Publication Date (Print):February 1, 1959Publication History Published online1 May 2002Published inissue 1 February 1959https…
Article Notizen: Über die Reaktion aluminiumorganischer Verbindungen mit Organo(poly)siloxanen. Alkylaluminiumsilanolate was published on February 1, 1959 in the journal Zeitschrift für Naturforschung B (volume 14, issue 2).
Abstract Previous work has demonstrated that the degree of crystal perfection in kaolinite can be correlated with many physical properties. In this paper some further relationships are shown, including surface area, base exchange capacity, total percentage of iron and titanium, and high-temperature mullitization. Surf…
The prediction, from dynamical considerations, that floating fibres may take up velocities intermediate between those of the back and front rollers is confirmed by high-speed photographic studies. The failure of Ichino and Kurosaki8 to observe such velocities is explained in terms of the experimental conditions select…
Further studies were made on the effect of the nature of the atmosphere on the wetting of gold and platinum by sodium disilicate at 1000°C. The gases were oxygen, nitrogen, carbon dioxide, helium, argon, water vapor, carbon monoxide, hydrogen, and several mixtures of some of these gases. Data reported were obtained in…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Presence of the SO2 Radical Ion in Aqueous Solutions of Sodium DithioniteR. G. Rinker, T. P. Gordon, D. M. Mason, and W. H. CorcoranCite this: J. Phys. Chem. 1959, 63, 2, 302Publication Date (Print):February 1, 1959Publication History Published online1 May 2002Published…
Abstract This paper reports on quantitative measurements of the small angle scattering of various rayons and ramie fibers as functions of moisture content using a three slit vacuum camera and monochromatic radiation. The scattered intensity was normalized on sample thickness and primary intensity through determination…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLinear Aromatic Polyesters of Carbonic AcidHermann. SchnellCite this: Ind. Eng. Chem. 1959, 51, 2, 157–160Publication Date (Print):February 1, 1959Publication History Published online1 May 2002Published inissue 1 February 1959https://pubs.acs.org/doi/10.1021/ie50590a038https…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCarbon Mixture over Iron Catalysts. II. Rates of Carbon FormationP. L. Walker Jr., J. F. Rakszawski, and G. R. ImperialCite this: J. Phys. Chem. 1959, 63, 2, 140–149Publication Date (Print):February 1, 1959Publication History Published online1 May 2002Published inissue 1 Feb…
Structural studies on (Ba-Pb)(Ti-Zr)O 3 system were performed, and the phase diagram of the whole system was determined. In the vicinity of BaTiO 3 , low temperature phases are brought to room temperature by adding Pb and Zr. Substituting some amount of Pb by Ba in Pb(Ti-Zr)O 3 , Curie point becomes lower, but the mor…
Single crystals of isotactic poly-4-methyl pentene-1 were prepared from solution. The crystals were mostly flat squares with more or leas regular shapes. They consisted of thin square layers forming spiral terraces centred on screw dislocations. The molecules were found to be perpendicular to these layers. The same po…