Materials Literature
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Abstract (1) Maleic anhydride is known to react ( a ) with conjugated compounds, e.g. , butadiene, usually producing simple cyclic systems, and ( b ) with unsaturated olefinic substances like styrene and vinyl acetate, producing long-chain heteropolymers. It is now demonstrated that maleic anhydride, under the influen…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Crystal Structure of Neodymium Bromate Enneahydrate, Nd(BrO3)3·9H2OLindsay. HelmholzCite this: J. Am. Chem. Soc. 1939, 61, 6, 1544–1550Publication Date (Print):June 1, 1939Publication History Published online1 May 2002Published inissue 1 June 1939https://doi.org/10.1021/…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTWarder's method for the titration of carbonatesA. A. Benedetti-Pichler and Michael CefolaCite this: Ind. Eng. Chem. Anal. Ed. 1939, 11, 6, 327–332Publication Date (Print):June 1, 1939Publication History Published online1 May 2002Published inissue 1 June 1939https://pubs.acs.…
An edge correction is often required in determining the dielectric constant of an insulating material by the capacitance method. Theoretical formulas by which the edge correction may be computed have been considered for a number of electrode arrangements. Some of these apply to circular electrodes and some to rectangu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDumas method for organic nitrogenFred Shea and C. E. WattsCite this: Ind. Eng. Chem. Anal. Ed. 1939, 11, 6, 333–334Publication Date (Print):June 1, 1939Publication History Published online1 May 2002Published inissue 1 June 1939https://pubs.acs.org/doi/10.1021/ac50134a013http…
Abstract The problem to be discussed, which arose in connexion with the uptake of moisture by cotton bales, is that of diffusion of one substance through another in the pores of a solid body which may absorb and immobilize some of the diffusing substance. Heat will be evolved by the absorption process, and this will i…
A relativistic treatment of the radiative correction of order $\frac{{e}^{2}}{\ensuremath{\hbar}c}$ to the elastic scattering cross section leads to the following results: (a) For the scattering in an electrostatic field of a particle described by the Pauli-Weisskopf theory, the correction is finite and is given by (3…
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…