High polymer solutions. Part 8.—The vapour pressure of solutions of polyisobutene in toluene and cyclohexane
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VII. A thermodynamic treatment of ferroelectricity and antiferroelectricity in pseudo-cubic dielectrics
The Kittel-Devonshire phenomenological treatment of antiferroelectricity is extended to the case of polarizations in three dimensions in a pseudo-cubic material. There are ten possible solutions of the proposed free energy equation, corresponding to non-polar, ferroelectric, antiferroelectric and ferrielectric states,…
The Stability of the Rare Earth Complexes with N-Hydroxyethylethylenediaminetriacetic Acid
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Stability of the Rare Earth Complexes with N-Hydroxyethylethylenediaminetriacetic AcidF. H. Spedding, J. E. Powell, and E. J. WheelwrightCite this: J. Am. Chem. Soc. 1956, 78, 1, 34–37Publication Date (Print):January 1, 1956Publication History Published online1 May 2002P…
POLYPEPTIDES. VI. POLY-α-L-GLUTAMIC ACID: PREPARATION AND HELIX-COIL CONVERSIONS1
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPOLYPEPTIDES. VI. POLY-α-L-GLUTAMIC ACID: PREPARATION AND HELIX-COIL CONVERSIONS1E. R. Blout and M. IdelsonCite this: J. Am. Chem. Soc. 1956, 78, 2, 497–498Publication Date (Print):January 1, 1956Publication History Published online1 May 2002Published inissue 1 January 1956h…
A Microstructure Study of Barium Titanate Ceramics
Polishing and etching techniques suitable for the metallographic examination of polycrystalline barium titanate ceramics are described. Interpretation of the photomicrographs reveals information which may be correlated with the electromechanical properties.
Diffused Emitter and Base Silicon Transistors*
Silicon n-p-n transistors have been made in which the base and emitter regions were produced by diffusing impurities from the vapor phase. Transistors with base layers 3.8 × 10−4-cm thick have been made. The diffusion techniques and the processes for making electrical contact to the structures are described. The elect…
The sorption and desorption kinetics of water in a regenerated cellulose
A. C. Newns, Trans. Faraday Soc., 1956, 52, 1533 DOI: 10.1039/TF9565201533
Oxygen-Containing Groups on the Surface of Carbon Black
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxygen-Containing Groups on the Surface of Carbon BlackMerton L. Studebaker, E. W. D. Huffman, A. C. Wolfe, and L. G. NaborsCite this: Ind. Eng. Chem. 1956, 48, 1, 162–166Publication Date (Print):January 1, 1956Publication History Published online1 May 2002Published inissue…
Synthesen in der Carotinoid‐Reihe. 1. Mitteilung. Die technische Synthese von β‐Carotin
Abstract The industrial β‐carotene manufacturing procedure based on Inhoffen's synthesis C 19 + C 2 + C 19 = C 40 is described. β‐Ionone is first lengthened to β‐C 14 ‐aldehyde as in our vitamin A‐synthesis. By acetalisation, condensation with vinyl ether and treatment with acid the new β‐C 16 ‐aldehyde is obtained. R…
THE EFFECT OF GROWTH CONDITIONS UPON THE SOLIDIFICATION OF A BINARY ALLOY
This investigation provides both a theoretical and an experimental analysis of the factors which affect the mode of solidification of a binary alloy. These factors are: (i) the concentration of solute in the melt (C 0 ); (ii) the rate of solidification (R); (iii) the temperature gradient in the melt at the solid–liqui…
Degree of Cure in Thermosetting Resins
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDegree of Cure in Thermosetting ResinsEugene BarrCite this: Ind. Eng. Chem. 1956, 48, 1, 72–74Publication Date (Print):January 1, 1956Publication History Published online1 May 2002Published inissue 1 January 1956https://pubs.acs.org/doi/10.1021/ie50553a024https://doi.org/10.…
The crystal structure of silk fibroins
J. O. Warwicker, Trans. Faraday Soc., 1956, 52, 554 DOI: 10.1039/TF9565200554
ELECTROLYTIC AND CHEMICAL POLISHING
Apart from two or three experiments at the beginning of the century, methods of polishing metallic surfaces by a process of anodic dissolution—electro-polishing or electrolytic polishing—have been known only for the last 25 years. Recently it has been discovered that electric current is not always indispensable, and a…
Thermal decomposition of polytetrafluoroethylene in various gaseous atmospheres
The effects of various gaseo us atmospheres on the thermal decompositi on of p oly tetrafiu oroet hy lene have been investigated in t he ran ge 450 0 to 500 0 C. Bot h cata ly sis a nd inhibit ion wer e obser ved . The inhibitor y su bstan ces, chlorine, hydrogen, carbon tetrachloride, and t oluen e, all produ ced m a…
2—Air Flow Through Plugs of Textile Fibres
A study is made of the various factors influencing the values obtained from Micronaire tests made on samples of cotton. It is shown that both fibre fineness and maturity affect the measurements and a calibration of the scale of the instrument is made in terms of a simple function of these two quantities. The interpret…
Relationships Between Calcium Silicates and Clay Minerals
The crystal-chemical basis of the relationship between hydrated calcium silicate and clay minerals is discussed, and a review is given of recent work on the tobermorite minerals, the group of hydrated calcium silicates which most nearly resembles the clay minerals. New data are presented for the specific gravities, re…
The dielectric relaxation spectrum of glass
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Further Studies on the Anodic Corrosion of Lead in H[sub 2]SO[sub 4] Solutions
Anodic corrosion of lead in sulfuric acid was studied in detail at potentials near the reversible potential. Results indicate that the first step in the corrosion process was reaction of lead with water to form lead dioxide. The solid‐phase reaction probably occurred below a certain potential, and this reaction plus t…
Improvement of bonding properties of polyethylene
Abstract If the surface of a polyethylene film is subjected to certain treatments, printing on the surface becomes possible, or, in other words, the bonding properties of the polyethylene film are improved. Two forms of treatment, involving the use of a Tesla coil discharge at atmospheric pressure and of a glow discha…
Experimental Test of the Theory of Penetration by Metallic Jets
Experimental measurements of jet velocity and of penetration velocity as functions of depth of penetration are described for lined cavity charges fired into several types of target material and under a variety of experimental conditions. The results show that the hydrodynamic theory of penetration of Pugh and of Hill,…