Materials Literature
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Minerals of the serpentine family are essentially divisible into two groups: chrysotile and antigorite types (the latter includes antigoritieal serpentines). Throughout, they are two-layer minerals. Their layers are formed by combining of a Si 2 O 5 layer and a brucite [ Mg ( OH ) 2 ]-like layer. The chemical formula…
Article Bemerkungen zur Systematik der Kristallstrukturen von Silikaten mit hochkondensierten Anionen was published on November 1, 1956 in the journal Zeitschrift für Physikalische Chemie (volume 206O, issue 1).
Some simple methods of preparing MgO thin films on Mg–Ag alloy with high secondary emission ratios are discussed. The oxidation procedure and a discussion of the underlying phenomena are presented. Films with a secondary yield of 12 at 600 v may be produced by oxidation in either oxygen or carbon dioxide. Results of a…
Abstract The effect of network density on pyrolysis of polymers and copolymers of styrene, divinylbenzene, and trivinylbenzene was studied over a wide range of temperature. Thermal stability of polymers and size of carbon residues increased with crosslink concentration as volatilization rates declined. Rate of gas evo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTheoretical Investigation of Foam DrainageW. M. Jacobi, K. E. Woodcock, and C. S. GroveCite this: Ind. Eng. Chem. 1956, 48, 11, 2046–2051Publication Date (Print):November 1, 1956Publication History Published online1 May 2002Published inissue 1 November 1956https://pubs.acs.o…
ABSTRACT The potentiality of clay minerals as useful indicators of the environment of their formation is summarized from the published literature on the origin of clay minerals. Caution must be observed when drawing geologic inferences from a rock or mineral concerning its origin because the rock or mineral may not ha…
The melt and polarization spectra of dotriacontane and polyethylene in the 750–1500 cm—1 region and of nylon 6 and nylon 11 in the 450–4000 cm—1 region are presented. In addition, the melt and crystal spectra of stearone are presented in the 650–3500 cm—1 region. The effect of crystallinity on the spectrum of polyethy…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and Properties of Porphyrin Vanadium Complexes1J. Gordon Erdman, Virginia G. Ramsey, Norman W. Kalenda, and William E. HansonCite this: J. Am. Chem. Soc. 1956, 78, 22, 5844–5847Publication Date (Print):November 1, 1956Publication History Published online1 May 2002P…
An analysis of the velocity distribution of the molecules which escape through an ideal aperture from an isothermal enclosure has been made for ten alkali halides (CsCl, CsBr, RbCl, KCl, KI, NaF, NaCl, NaI, LiCl, and LiBr). It is found that there is a significant abundance of dimers in all cases except those of the ce…
A simple form of 60-cps hysteresis loop tracer for materials of high and low permeability is described. By including a differential form of balance control, all 60-cps voltage present in the leads and pickup coils, prior to the insertion of a magnetic specimen into the field coils, may be completely balanced out. The…
Abstract Solubilities of both gypsum and anhydrite in solution with sodium chloride, varied in concentration up to saturation, have been determined at 25° and for gypsum only at 35°. Sodium chloride lowers the temperature (42°) at which both forms of calcium sulphate have the same solubility and the salt concentration…
Specimens of U-9, -10.5, -12, and -13.5 w/o (weight percent) Mo and U-10 w/o Nb, heat treated to retain the metastable gamma phase at room temperature and also to transform this phase to the room temperature stable phases, were irradiated in the Materials Testing Reactor (MTR) at maximum temperatures of less than 200°…
The average change of intensity due to adding a heavy atom to a protein crystal is calculated for both the centrie and the acentric reflections. The amount by which small shifts of the molecules change the intensities is obtained for the monoclinic and orthorhombie systems, and formulae are given for the changes cause…
A barium titanate transducer coupled to an exponential horn can produce large strains in metals. By using a final horn with a necked down section, it is possible to concentrate the strains in a small specimen. Measurements of the impressed voltage and a voltage from a pick up electrode on the titanate make it possible…
A theory of the birefringence produced in a substance perpendicular to a strong magnetic field (the Cotton-Mouton effect) is presented. Allowance is made for electrical anisotropy induced directly by the magnetic field, an effect which can occur even for isotropic molecules. The effect of molecular interaction on meas…
The present work was undertaken with the purpose of considering why and how reaction takes place in an ultrasonic field, rather than studying the chemical kinetics of such reactions. Experimental evidence is presented which supports the conclusions that chemical processes brought about by ultrasonics require cavitatio…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMass Transfer in FoamsA. B. Metzner and L. F. BrownCite this: Ind. Eng. Chem. 1956, 48, 11, 2040–2045Publication Date (Print):November 1, 1956Publication History Published online1 May 2002Published inissue 1 November 1956https://pubs.acs.org/doi/10.1021/ie50563a036https://do…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHistory and Development of Foam as a Fire Extinguishing MediumA. F. RatzerCite this: Ind. Eng. Chem. 1956, 48, 11, 2013–2016Publication Date (Print):November 1, 1956Publication History Published online1 May 2002Published inissue 1 November 1956https://pubs.acs.org/doi/10.102…
If a textile yarn segment, clamped at each end, is impacted transversely at the mid point, the stress-strain curve for this yarn can be obtained from measurements on a high speed photographic record of the yarn's motion. This paper describes the apparatus and procedure used. Stress-strain curves for high rates of stra…
The influence of differences in the Al / Si -distribution of feldspars on the infrared absorption in the region of 7 to 16 μ is shown. Relations between the low- and high-temperature modifications of feldspars in view of their absorption spectrae are discussed. The value of infrared absorption measurements for the dis…