Thiourea, a New Ferroelectric
Received 19 September 1956DOI:https://doi.org/10.1103/PhysRev.104.1191©1956 American Physical Society
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Magnetic Structures of the Polymorphic Forms of Manganous Sulfide
Manganous sulfide exists in three polymorphic forms. There are two cubic modifications, $\ensuremath{\alpha}$-MnS having the rock salt structure and $\ensuremath{\beta}$-MnS with the zinc blende structure. The third form is hexagonal $\ensuremath{\beta}$-MnS with the wurtzite structure. The magnetic susceptibilities o…
Magnesium Polymetaphosphate
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnesium PolymetaphosphateR. Pfanstiel and R. K. IlerCite this: J. Am. Chem. Soc. 1956, 78, 21, 5510–5511Publication Date (Print):November 1, 1956Publication History Published online1 May 2002Published inissue 1 November 1956https://pubs.acs.org/doi/10.1021/ja01602a014https…
Crystallographic Data. 139. 2-Amino-2-methyl-1,3-propanediol
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystallographic Data. 139. 2-Amino-2-methyl-1,3-propanediolH. A. Rose and Ann. Van CampCite this: Anal. Chem. 1956, 28, 11, 1790–1791Publication Date (Print):November 1, 1956Publication History Published online1 May 2002Published inissue 1 November 1956https://pubs.acs.org/…
Studies on the Chemistry of Halogens and of Polyhalides. IX. Electrical Conductance Study of Higher Polyiodide Complex Ions in Acetonitrile Solutions1,2
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudies on the Chemistry of Halogens and of Polyhalides. IX. Electrical Conductance Study of Higher Polyiodide Complex Ions in Acetonitrile Solutions1,2Alexander I. Popov, Ralph H. Rygg, and Norman E. SkellyCite this: J. Am. Chem. Soc. 1956, 78, 22, 5740–5744Publication Date…
Beiträge zur Chemie des Schwefels. XXIX. Über die Darstellung von Rohsulfanen
Abstract Das Verfahren zur Darstellung des als Rohsulfan bezeichneten, aus Na 2 S x −Lösungen mit Salzsäure zu erhaltenden Sulfangemisches wurde weiter entwickelt mit dem Ziele, laufend größere Mengen des Öles im Laboratorium zu gewinnen. Der Einfluß verschiedener Faktoren auf die Ausbeute und auf die Zusammensetzung…
The tensile strengths of viscous liquids under dynamic loading
Under similar conditions of transient loading the cavitation thresholds of syrup and olive oil are 130 × 10 6 dyne/cm 2 and 29 × 10 6 dyne/cm 2 respectively. For fluids with a viscosity (η) in the range 0.01 to 400 P the cavitation threshold pressure P c is given by the empirical relation P c = κη 0.2 . This result ca…
Die gewellte Struktur des Antigorits, I
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…
Bemerkungen zur Systematik der Kristallstrukturen von Silikaten mit hochkondensierten Anionen
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).
Preparation and Properties of Thin Film MgO Secondary Emitters
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…
Pyrolysis of crosslinked styrene polymers
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…
Theoretical Investigation of Foam Drainage
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…
CLAY MINERALS AS INFLUENCED BY ENVIRONMENTS OF THEIR FORMATION
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…
Infrared Spectra of Polymers. I. Effect of Crystallinity on the Infrared Spectrum of Polyethylene and on the Infrared Spectra of Nylon 6 and Nylon 11
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…
Synthesis and Properties of Porphyrin Vanadium Complexes1
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…
Molecular Composition of Alkali Halide Vapors
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…
Simple 60-cps Hysteresis Loop Tracer for Magnetic Materials of High or Low Permeability
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…
Solubilities in the system CaSO4‐NaCl‐H2O at 25° and 35°
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…
Phase Changes in Pile-Irradiated Uranium-Base Alloys
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 theory of the method of isomorphous replacement for protein crystals. I
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…