Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolar-Type Rust InhibitorsH. R. Baker and W. A. ZismanCite this: Ind. Eng. Chem. 1948, 40, 12, 2338–2347Publication Date (Print):December 1, 1948Publication History Published online1 May 2002Published inissue 1 December 1948https://pubs.acs.org/doi/10.1021/ie50468a024https:/…
In order to explain the properties of a barium titanate single domain crystal, a previous theory of the ferroelectric effect in rochelle salt has been extended to the three-dimensional structure of barium titanate. This involves six equilibrium positions and results in significant differences from the single bond type…
The crystal structure of hexagonal barium titanate has been determined by X-ray methods. The unit cell, which contains six units of BaTiO3, has a0 = 5.735 A. and c0 = 14.05 A. In the space group C63/mmc all the ions occur at special positions: 2 Ba at (b), 4 Ba at (f), 2 Ti at (a), 4 Ti at (f), 6 O at (h), and 12 O at…
Abstract Polyvinyl alcohol prepared by hydrolyzing polymerized vinyl acetate is partially degraded within a few minutes by reagents known to attack 1,2‐glycol structures. The degree of degradation is limited, however, the final molecular weights of the degraded products being in the range of 3700 to 6500 (viscosity av…
In spherical photo-tubes with interchangeable emitters, energy distributions of external photoelectrons from the semiconductors, Te, Ge, and B, were compared with those of several metals. Contact potentials were determined from the saturation points of current-voltage characteristics. For the semiconductors, as contra…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDetermination of Tensile Strength of Natural Rubber and GR-STakeru. Higuchi, H. M. Leeper, and D. S. DavisCite this: Anal. Chem. 1948, 20, 11, 1029–1033Publication Date (Print):November 13, 1948Publication History Published online1 May 2002Published inissue 13 November 1948h…
A technique is described for the preparation of `single' crystals of BaTiO3. At room temperature the crystals are complexes of habit appropriate to cubic symmetry, but consisting of multiply-twinned tetragonal components with orientation very sensitive to externally applied pressure or electric fields. Optical and X-r…
Abstract An einem Rechenbeispiel wird gezeigt, wie sich Elektronenlinsen durch eine für Elektronen durchlässige ebene Metallfolie chromatisch korrigieren lassen. Die benachbarten Elektroden influenzieren auf der Folie negative Ladungen, die die langsameren Strahl-elektronen verhältnismäßig stark nach außen drängen und…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of the Thermal Decomposition of Isopropyl ChlorocarbonateArthur R. Choppin and Edgar L. CompereCite this: J. Am. Chem. Soc. 1948, 70, 11, 3797–3801Publication Date (Print):November 1, 1948Publication History Published online1 May 2002Published inissue 1 November 194…
(1948). 30—THE HEAT OF ABSORPTION OF WATER BY CELLULOSE. Journal of the Textile Institute Transactions: Vol. 39, No. 11, pp. T351-T367.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Vapor Pressures of Inorganic Substances. I. Beryllium1Robert B. Holden, Rudolph Speiser, and Herrick L. JohnstonCite this: J. Am. Chem. Soc. 1948, 70, 11, 3897–3899Publication Date (Print):November 1, 1948Publication History Published online1 May 2002Published inissue 1…
Tharty-second Guthrzc Lecture, delzvwed ow 4 %ne 1948N choosing a subject for the Guthrie Lecture it seems important to consider.the use to which such a lecture can be put.There is so much published now
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrganosilicon Polymers. IV. Infrared Studies on Cyclic Disubstituted Siloxanes1C. W. Young, P. C. Servais, C. C. Currie, and M. J. HunterCite this: J. Am. Chem. Soc. 1948, 70, 11, 3758–3764Publication Date (Print):November 1, 1948Publication History Published online1 May 200…
The vapor pressures of six alkali halides, NaBr, NaI, KI, CsCl, CsBr, and CsI, have been measured in the range from about 10−4-mm to 0.1-mm pressure. The measurements were made by the diffusion method, using an oxygen-coated tungsten filament as detector.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemorheology of Polysulfide RubbersMarcos Mochulsky and Arthur V. TobolskyCite this: Ind. Eng. Chem. 1948, 40, 11, 2155–2163Publication Date (Print):November 1, 1948Publication History Published online1 May 2002Published inissue 1 November 1948https://pubs.acs.org/doi/10.10…
This is the first in a series of papers to be issued by the Quartermaster Corps discussing the importance of fabric geometry in the development of more utilitarian and serviceable textile materials. It is a literature review which shows the relationship between the structural char acteristics of fabrics and various fu…
When a direct current bias is applied to a multicrystalline barium titanate ceramic, an alternating voltage can excite resonances in the ceramic. Four modes of motion have been excited---a longitudinal mode at right angles to the applied field, a radial mode of a circular plate at right angles to the applied field, a…
1. The structure of the collagen fibrils of normal human skin corium has been investigated with the electron microscope. 2. Under the conditions of observation the fibrils ranged in width from about 700 to 1,400 A with 1,000 A as the value occurring most frequently. They showed little tendency to fray longitudinally a…
Abstract Observations on pure cultures of diatoms and the results of centrifuge experiments showed that under optimal conditions the vegetative cells have the same specific gravity as sea water. The specific gravity of resting spores is significantly higher than that of sea water. Hence the specific gravity of the cel…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSome Systems of Carbon Halides with Dioxane, Pyridine and CyclohexaneS. M. Scholastica Kennard and P. A. McCuskerCite this: J. Am. Chem. Soc. 1948, 70, 10, 3375–3377Publication Date (Print):October 1, 1948Publication History Published online1 May 2002Published inissue 1 Octo…