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CONDENSATION OF AROMATIC ALDEHYDES WITH γ-PICOLINE METHIODIDE

Arthur P. Phillips1949-03-01The Journal of Organic Chemistry

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…

Synthesis and properties of polymers

A Grain Boundary Model and the Mechanism of Viscous Intercrystalline Slip

T’ing-Sui Kê1949-03-01Journal of Applied Physics

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…

Metallic Glasses and Amorphous AlloysMicrostructure and mechanical propertiesMicrostructure and Mechanical Properties of Steels

THE SYSTEM BaO–B 2 O 3 *

Ernest M. Levin、Howard F. McMurdie1949-03-01Journal of the American Ceramic Society

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…

Glass properties and applicationsCrystal Structures and PropertiesNuclear materials and radiation effects

The Photochemistry of Cellulose. Effects of Water Vapor and Oxygen in the Far and Near Ultraviolet Regions

Herbert F. Launer、William K. Wilson1949-03-01Journal of the American Chemical Society

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…

Advanced Cellulose Research StudiesLignin and Wood Chemistry

Water Sorption and the Poly-Phase Structure of Cellulose Fibers

J. A. Howsmon1949-03-01Textile Research Journal

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…

Advanced Cellulose Research StudiesLignin and Wood ChemistryMaterial Properties and Processing

Three-Dimensional Solution for the Stress Concentration Around a Circular Hole in a Plate of Arbitrary Thickness

Eli Sternberg、M. A. Sadowsky1949-03-01Journal of Applied Mechanics

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…

Elasticity and Wave PropagationStructural mechanics and materialsMaterial Properties and Failure Mechanisms

An Improved Laboratory Preparation of Copper-Chromium Oxide Catalyst

Thomas W. Riener1949-03-01Journal of the American Chemical Society

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…

Catalysis and Oxidation ReactionsIron oxide chemistry and applicationsCatalytic Processes in Materials Science