Materials Literature
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Abstract Die Gitterkonstanten der C‐Formen der Sesquioxyde von Neodym, Samarium, Europium, Gadolinium, Terbium, Dysprosium, Erbium, Thulium, Ytterbium und Cassiopeium wurden neu bestimmt. Die Gitterkonstanten der Oxyde von Gadolinium bis Cassiopeium bilden eine stetige Kurve, die der Oxyde von Neodym bis Gadolinium ei…
Abstract 1. Es wird die Darstellung der Monosulfide, Selenide und Telluride vou Natrium, Kalium, Rubidium und Cäsium beschrieben.
Densities of single crystals of cupric acetate monohydrate have been determined by the pycnometer method for temperatures 21.0°C, 23.5°C and 25.0°C, and are 1.907±0.001, 1.891±0.004 and 1.880±0.003 g cm-3, respectively. The first one compares favorably with the value (1.906 g cm-3) calculated at about 21.0°C from accu…
A new method for the measurement of the ultra-high frequency, initial, inner permeability of ferromagnetic materials has been developed which gives much greater accuracy and is much faster than the older methods. The probable error is under one percent at a frequency of 197 megacycles per second, as contrasted with pr…
The diffraction of electrons by anthracene crystals gives results which are in agreement with the structure as previously determined with x rays. In addition to the normal type of multispot pattern characteristic of electron diffraction by thin single crystals, however, there appears superimposed another pattern consi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE ISOLATION OF VITAMINS K1 AND K2R. W. McKee, S. B. Binkley, D. W. MacCorquodale, S. A. Thayer, and E. A. DoisyCite this: J. Am. Chem. Soc. 1939, 61, 5, 1295Publication Date (Print):May 1, 1939Publication History Published online1 May 2002Published inissue 1 May 1939https:…
The author's previously published results for the thermal conductivity of Armco iron up to a temperature of 800° c. have been confirmed by two independent methods. The first was a comparative method involving longitudinal heat-flow, and the second an absolute method in which the heat flowed radially from the centre to…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Crystal Structure of GlycineGustav. Albrecht and Robert B. CoreyCite this: J. Am. Chem. Soc. 1939, 61, 5, 1087–1103Publication Date (Print):May 1, 1939Publication History Published online1 May 2002Published inissue 1 May 1939https://pubs.acs.org/doi/10.1021/ja01874a028ht…
The relation between true and brightness temperatures of tantalum was determined by means of pyrometric observations on the inside and outside of a long thin-walled tube heated electrically. The brightness temperature as a function of heating current was determined by sighting on an electrically heated wire of known d…
This is the first of a series of research progress reports by Prof. E. R. Schwarz on the "Technical Evaluation of Textile Finishing Treatments" that is being sponsored jointly through a co-operative research agree— ment between Massachusetts Institute of Technology and the American Association of Textile Chemists and…
A brief historical review of the development of the electron supermicroscope is given. This is followed by a theoretical discussion of the resolving power attainable with the instrument and a summary of the important results which have been obtained by other workers. A description is given of the supermicroscope which…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSuccessive Phases in the Transformation of Anhydrous Sodium Palmitate from Crystal to LiquidRobert D. Vold and Marjorie J. VoldCite this: J. Am. Chem. Soc. 1939, 61, 4, 808–816Publication Date (Print):April 1, 1939Publication History Published online1 May 2002Published iniss…
Abstract The first careful examination of the red pigment occurring in the wing feathers of certain turacos, African birds belonging to the family Musophagidae, N. O. Scansores, was made by Church in 1869, and he it was who proposed the name "Turacin" for this pigment. His observations were extended in 1892, and since…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrical Application Of PolystyreneL. A. Matheson and W. C. GogginCite this: Ind. Eng. Chem. 1939, 31, 3, 333–338Publication Date (Print):March 1, 1939Publication History Published online1 May 2002Published inissue 1 March 1939https://pubs.acs.org/doi/10.1021/ie50351a017ht…
This article outlines the reasons cotton fabrics shrink, and gives many numerical examples. The length of cotton fibers change less than 1 percent from 45 percent relative humidity to wet, but diameter swells 14 percent. Unlike wool or rayon, contraction of cotton fibers does not contribute to shrinkage. Yarns of ordi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Rate of Formation and the Dissociation of Calcium HydrideWarren C. Johnson, Morris F. Stubbs, Albert E. Sidwell, and Alphonse. PechukasCite this: J. Am. Chem. Soc. 1939, 61, 2, 318–329Publication Date (Print):February 1, 1939Publication History Published online1 May 2002…
From the equilibrium state of the whole system copper-nickel-silicon determined by the author, various sectional diagrams have been constructed. The following results are based on the experiments of the thermal and X-ray analyses as well as of the microscopic examination: Binary system as shown by M. G. Corson is not…
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Hydrogen peroxide was shown to be formed during the corrosion of aluminum and other metals in the presence of an excess of oxygen. The Russell effect of metals was found to be caused by the production of hydrogen peroxide and to provide a highly sensitive test for the formation of hydrogen peroxide at metal surfaces.…
R. Audubert, Trans. Faraday Soc., 1939, 35, 197 DOI: 10.1039/TF9393500197