Comportamiento de un horno vertical para cocer cal
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A dynamical model of a crystal structure. III
Abstract A calculation of the maximum shear strain under which a two-dimensional close-packed lattice is stable has been carried out in terms of the forces between the lattice components. Two types of force were used; those between floating bubbles, which enabled a comparison with experiments on actual rafts of bubble…
A dynamical model of a crystal structure. II
Abstract A quantitative study of the mechanical properties of two-dimensional bubble rafts has been made. The elastic properties have been used to check the theory of the interaction of the bubbles, and reasonable agreement is obtained. The plastic properties are the main subject of this paper. Plastic deformation pro…
Interpretation of the Thermal Conductivity of Glasses
The thermal conductivity of glasses decreases with decreasing temperature, while the conductivity of crystalline substances increases with decreasing temperature. The behavior of glasses is interpreted in terms of an approximately constant free path for the lattice phonons, so that the conductivity decreases roughly w…
Crystal chemical studies of the 5f-series of elements. VI. The Ce2S3–Ce3S4 type of structure
The compounds Ce2S3, La2S3, Pu2S3, Ac2S3 and Am2S3 are shown to be iso-structural. The structure is cubic with sixteen sulfur atoms and 10⅔ metal atoms per unit cube. The unit-cell constant for the prototypic compound Ce2S3 is a = 8.6173 ± 0.0005 kX. The metal atoms are randomly distributed over twelve-fold positions…
The decomposition of silver oxide—An autocatalytic reaction.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe decomposition of silver oxide—An autocatalytic reaction.George C. Hood and George W. Murphy Cite this: J. Chem. Educ. 1949, 26, 3, 169Publication Date (Print):March 1, 1949Publication History Received3 August 2009Published online1 March 1949Published inissue 1 March 1949…
On the Effect of the Field Reactions on the Interaction of Mesotrons and Nuclear Particles, I
Progress of Theoretical Physics Vol. 1 No. 4 (1946) pp. 109–124 On the Effect of the Field Reactions on the Interaction of Mesotrons and Nuclear Particles, II Shin-ichirô Tomonaga Progress of Theoretical Physics Vol. 2 No. 1 (1947) pp. 6–24 On the Effect of the Field Reactions on the Interaction of Mesotrons and Nucle…
Compounding Rubber with Petroleum Products - Correlation of Chemical Characteristics with Compounding Properties and Analysis of Petroleum Products Used as Compounding Ingredients in Rubber
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCompounding Rubber with Petroleum Products - Correlation of Chemical Characteristics with Compounding Properties and Analysis of Petroleum Products Used as Compounding Ingredients in RubberFritz S. Rostler and Heinz W. SternbergCite this: Ind. Eng. Chem. 1949, 41, 3, 598–608…
Dielectric Properties and Ultraviolet Absorption Spectra of Addition Compounds of Sulfur Dioxide and Sulfur Trioxide with Tertiary Amines
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDielectric Properties and Ultraviolet Absorption Spectra of Addition Compounds of Sulfur Dioxide and Sulfur Trioxide with Tertiary AminesJ. A. Moede and Columba. CurranCite this: J. Am. Chem. Soc. 1949, 71, 3, 852–858Publication Date (Print):March 1, 1949Publication History…
CONDENSATION OF AROMATIC ALDEHYDES WITH γ-PICOLINE METHIODIDE
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCONDENSATION OF AROMATIC ALDEHYDES WITH γ-PICOLINE METHIODIDEARTHUR P. PHILLIPSCite this: J. Org. Chem. 1949, 14, 2, 302–305Publication Date (Print):March 1, 1949Publication History Published online1 May 2002Published inissue 1 March 1949https://pubs.acs.org/doi/10.1021/jo01…
A Grain Boundary Model and the Mechanism of Viscous Intercrystalline Slip
A study of the activation energy associated with the viscous intercrystalline slip shows that the conventional theories of grain boundary, e.g., the intercrystalline amorphous cement theory and the abrupt transitional theory, are both untenable. A grain boundary model is described in which the transition region at the…
THE SYSTEM BaO–B 2 O 3 *
A bstract A phase‐equilibrium diagram of the system BaO–B 2 O 3 has been constructed from data obtained essentially by the quenching method. Four congruently melting compounds were identified: BaO·4B 2 O 3 , melting at 879 ± 5°C.; BaO·2B 2 O 3 , melting at 900 · 5°C.; BaO·B 2 O 3 , melting at 1095 ± 5°C.; and 3BaO·B 2…
The Photochemistry of Cellulose. Effects of Water Vapor and Oxygen in the Far and Near Ultraviolet Regions
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Photochemistry of Cellulose. Effects of Water Vapor and Oxygen in the Far and Near Ultraviolet RegionsHerbert F. Launer and William K. WilsonCite this: J. Am. Chem. Soc. 1949, 71, 3, 958–962Publication Date (Print):March 1, 1949Publication History Published online1 May 2…
Water Sorption and the Poly-Phase Structure of Cellulose Fibers
Many of the methods used to study the fine structure of cellulose are tedious and not suitable for routine use. In the present work, an equilibrium moisture regain method which can be carried out on a large scale with a high degree of accuracy has been developed. The method is illustrated by a wide variety of cellulos…
Three-Dimensional Solution for the Stress Concentration Around a Circular Hole in a Plate of Arbitrary Thickness
Abstract This paper contains an approximate three-dimensional solution for the stress distribution around a circular cylindrical hole in an infinite plate of arbitrary thickness, which is otherwise in a uniform state of plane stress parallel to the bounding planes. The approach used rests on a modification of the Ritz…
An Improved Laboratory Preparation of Copper-Chromium Oxide Catalyst
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn Improved Laboratory Preparation of Copper-Chromium Oxide CatalystThomas W. RienerCite this: J. Am. Chem. Soc. 1949, 71, 3, 1130Publication Date (Print):March 1, 1949Publication History Published online1 May 2002Published inissue 1 March 1949https://pubs.acs.org/doi/10.102…
Aditivo suizo que mejora la calidad de morteros y hormigones
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Fabricación simultánea de cemento y fundición de hierro
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El cemento de los romanos
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El cemento blanco
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