Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTX-Ray Studies of Reactions of Cellulose in Non-Aqueous Systems. II. Interaction of Cellulose and Primary Amines1W. E. Davis, A. J. Barry, F. C. Peterson, and A. J. KingCite this: J. Am. Chem. Soc. 1943, 65, 7, 1294–1299Publication Date (Print):July 1, 1943Publication History…
Abstract Measurements of specific heat were made on a sample of Hycar-OR synthetic rubber from 15° to 340° K by means of an adiabatic vacuum-type calorimeter. The experimental values of the specific heat between 15° and 22° K were well represented by the Debye specific-heat equation, using a βν value of 80 and, accord…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIntermolecular Forces and Chain Configuration in Linear Polymers—The Effect of N-Methylation on the X-Ray Structures and Properties of Linear PolyamidesW. O. Baker and C. S. FullerCite this: J. Am. Chem. Soc. 1943, 65, 6, 1120–1130Publication Date (Print):June 1, 1943Publica…
A bstract Evidence for the existence of a “transformation region” rather than a “transformation point” in the 10 14 poise range of glasses has been produced by a variety of experiments, both static and dynamic. Refractive index was measured (1) on small specimens quenched in air and (2) directly in the furnace by the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Thermal Diagram of the System Iron—Tin1,2W. F. Ehret and D. H. GurinskyCite this: J. Am. Chem. Soc. 1943, 65, 6, 1226–1230Publication Date (Print):June 1, 1943Publication History Published online1 May 2002Published inissue 1 June 1943https://pubs.acs.org/doi/10.1021/ja01…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Crystal Structure of Pb3O4S. T. GrossCite this: J. Am. Chem. Soc. 1943, 65, 6, 1107–1110Publication Date (Print):June 1, 1943Publication History Published online1 May 2002Published inissue 1 June 1943https://pubs.acs.org/doi/10.1021/ja01246a029https://doi.org/10.1021/ja0…
This paper summarizes the results obtained thus far in an intensive study of the manganese oxide minerals. X-ray powder photographs, supplemented by chemical tests, have proved to be the best means for identifying these minerals. Formulas are suggested. Physical properties and X-ray data are listed for the commoner mi…
If a rod is twisted while subjected to longitudinal compression it will support without fracture angles of twist many-fold greater and maximum torques somewhat greater than is possible in the absence of load. Under compressional load the curve of shearing stress against shearing strain rises to a maximum and then sink…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Polymerization of Styrene in the Presence of Nitrobenzene, 2,4-Dinitrochlorobenzene and NitromethaneCharles C. Price and Dorothy Ann DurhamCite this: J. Am. Chem. Soc. 1943, 65, 5, 757–759Publication Date (Print):May 1, 1943Publication History Published online1 May 2002P…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDonor-Acceptor Bonding. I. Etherates of Boron Trifluoride1A. W. Laubengayer and G. R. FinlayCite this: J. Am. Chem. Soc. 1943, 65, 5, 884–889Publication Date (Print):May 1, 1943Publication History Published online1 May 2002Published inissue 1 May 1943https://pubs.acs.org/doi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRed Zinc Oxide1William Ehret and Arthur GreenstoneCite this: J. Am. Chem. Soc. 1943, 65, 5, 872–877Publication Date (Print):May 1, 1943Publication History Published online1 May 2002Published inissue 1 May 1943https://doi.org/10.1021/ja01245a030RIGHTS & PERMISSIONSArticle Vie…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE PORPHYRIN-LIKE PRODUCTS OF THE REACTION OF PYRROLE WITH BENZALDEHYDE1S. ARONOFF and M. CALVINCite this: J. Org. Chem. 1943, 08, 3, 205–223Publication Date (Print):May 1, 1943Publication History Published online1 May 2002Published inissue 1 May 1943https://pubs.acs.org/do…
Metallic films prepared by evaporation show characteristic irreversible changes, especially if prepared at low temperatures. The changes can be explained by a decay of lattice distortions. To allow of a mathematical treatment, a set of simplifying assumptions is formulated. To initiate a decomposition of a distortion,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRaman Spectrum and Molecular Vibrations of Nitric and Deuteronitric AcidsO. Redlich and L. E. NielsenCite this: J. Am. Chem. Soc. 1943, 65, 4, 654–660Publication Date (Print):April 1, 1943Publication History Published online1 May 2002Published inissue 1 April 1943https://pub…
The theory of dielectric polarization of polar liquids is used to calculate the dielectric constants of water and some alcohols. Quasi-rigid coordination models, based upon x-ray structural investigations, are employed in the calculation of a function g which measures the orientational correlation between neighbors in…
Gramicidin has been subjected to acid hydrolysis, and the presence in the hydrolysate of d-leucine, 1-tryptophan, dl-valine, I-alanine and glycine has been established.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChlorophyll Fluorescence and Energy Transfer in the Diatom Nitzschia Closterium.Herbert J. Dutton, Winston M. Manning, and B. M. DuggarCite this: J. Phys. Chem. 1943, 47, 4, 308–313Publication Date (Print):April 1, 1943Publication History Published online1 May 2002Published…
For more than twenty years, investigations have been conducted at the Scripps Institution of Oceanography on the distribution and abundance of marine plankton diatoms at several stations along the Pacific coast from Scotch Cap, Alaska, to La Jolla, California. Besides these regular series of collections, numerous shor…
The crystal structure of gadolinium formate has been studied by means of Laue, rotation, and powder x-ray patterns. It has a rhombohedral lattice. The unit cell, a0=6.17A, a=115° 30′, contains one molecule, Gd(OOCH)3. Density—(calculated) 3.85, (Berman balance) 3.77. By taking into consideration the symmetry of specia…
Absorption coefficients of all elements may be calculated, from short wave-lengths up to the K critical absorption wave-length by the expression: μ/ρ=αλ3Z2(2Z/A)−βλ4Z5(2Z/A)+σeN0(Z/A). This formula holds for all elements when suitable values for α and β are chosen. Factors α and β are related to the atomic number, Z,…