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Amélioration du filage des pâtes céramiques par addition de carbonate de soude

L. Alviset1955-05-01Materiales de Construccion

Este articulo resume los trabajos sistemáticos de investigación, realizados por la. "Société Profeasionnelle des Produits Francais de Terre Cuite” y del "Service des Recherches Teohniques de la Sooiété Francaise de Céramique”. Tenían como finalidad el mejoramiento de las calidades de las arcillas utilizadas en la fabr…

Compaction and flow of concrete

M.P. Poucher1955-05-01Materiales de Construccion

La finalidad de las investigaciones era la preparación de un hormigón de alta calidad, con empleo de árido lo más grueso posible (lo que determina una economía en el consumo de cemento), y con una relación agua cemento lo más bajo posible, presentando, al mismo tiempo, la máxima docilidad y movilidad.

LV. The optical and electrical properties of single crystals of sodium niobate

L. E. Cross、B. Nicholson1955-05-01The London Edinburgh and Dublin Philosophical Magazine and Journal of Science

The optical strains and dielectric constants of small single crystals of sodium niobate have been measured over the temperature range -190°c to +650°c. At room temperature the properties are consistent with an antiferroelectric structure, and for high fields applied perpendicular to the orthorhombic c axis, double hys…

Solid-state spectroscopy and crystallographyAcoustic Wave Resonator TechnologiesGlass properties and applications

Etch Patterns and Ferroelectric Domains in BaTiO3Single Crystals

John A. Hooton、Walter J. Merz1955-04-15Physical Review

It has been found that ferroelectric BaTi${\mathrm{O}}_{3}$ single crystals show a differential etch rate when etched in hydrochloric acid. The positive end of the electric polarization etches much faster than the negative one. Thus this phenomenon affords a valuable new tool for the investigation of the ferroelectric…

Acoustic Wave Resonator TechnologiesLiquid Crystal Research AdvancementsFerroelectric and Piezoelectric Materials

Theory of Ionic Ordering, Crystal Distortion, and Magnetic Exchange Due to Covalent Forces in Spinels

John B. Goodenough、Arthur L. Loeb1955-04-15OpenAlex

Elastic- and electrostatic-energy considerations are insufficient for an explanation of cation ordering between tetrahedral and octahedral sites in spinels. Tetrahedral, octahedral, and square covalent bonds are also important when cations are to be accommodated in these sites. The square bonds in octahedral sites can…

Magnetic Properties and Synthesis of FerritesAdvanced Condensed Matter PhysicsMultiferroics and related materials

The crystal structure of Mn2Sb

L. Heaton、N. S. Gingrich1955-04-10Acta Crystallographica

The crystal structure of Mn2Sb has been re-examined. Rotation and Laue patterns from small fragments and patterns using powdered samples confirmed the published tetragonal structure with a ----4.08, c -----6.56 A. Large single crystals were grown to make possible a study of reflections from 00/, h00 and hhO planes. Re…

Heusler alloys: electronic and magnetic propertiesInorganic Chemistry and MaterialsIntermetallics and Advanced Alloy Properties

Anwendung der Halbleiter‐Theorie auf Probleme der heterogenen Katalyse

Karl Häuffe1955-04-07Angewandte Chemie

Abstract Es wird der Stand der heutigen Katalyse‐Forschung aufgezeigt und die gegenseitige Beziehung zu der Halbleiter‐Theorie herausgestellt. Nach Behandlung der Grundlagen der Randschicht‐Theorie der Chemisorption wird vor allem am Beispiel des N 2 O‐Zerfalls und der CO‐Oxydation der Mechanismus des wechselseitigen…

Catalysts for Methane ReformingCatalytic Processes in Materials ScienceCatalysis and Oxidation Reactions

The Reactions of Two Diaryl Diselenides with Mercury(II) Chloride

Edwin S. Gould、Albert Amendola1955-04-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Reactions of Two Diaryl Diselenides with Mercury(II) ChlorideEdwin S. Gould and Albert AmendolaCite this: J. Am. Chem. Soc. 1955, 77, 8, 2103–2104Publication Date (Print):April 1, 1955Publication History Published online1 May 2002Published inissue 1 April 1955https://pub…

Organometallic Compounds Synthesis and CharacterizationOrganoselenium and organotellurium chemistryOrganic and Molecular Conductors Research

Zur Komplexchemie der 2‐ und 3 wertigen Seltenen Erden Polarographische Untersuchungen an Europiumkomplexen

Dietrich Eckardt、L. Holleck1955-04-01Zeitschrift für Elektrochemie Berichte der Bunsengesellschaft für physikalische Chemie

Abstract Unter Hinzuziehung spektroskopischer Ergebnisse werden für Äthylendiaminotetraessigsäure und o‐Cyclohexandiaminotetraessigsäure als Komplexbildner die Bildungskonstanten sowohl der Eu (III)‐ als auch der Eu (II)‐Komplexe aus polarographischen Messungen ermittelt und damit die Existenzbereiche der einzelnen Ko…

Lanthanide and Transition Metal ComplexesMagnetism in coordination complexesCrystal Structures and Properties

Low Temperature Heat Capacity and Entropy at 298.16°K. of Analcite

E. G. King1955-04-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLow Temperature Heat Capacity and Entropy at 298.16°K. of AnalciteE. G. KingCite this: J. Am. Chem. Soc. 1955, 77, 8, 2192–2193Publication Date (Print):April 1, 1955Publication History Published online1 May 2002Published inissue 1 April 1955https://pubs.acs.org/doi/10.1021/j…

Thermal and Kinetic AnalysisChemical Thermodynamics and Molecular Structurenanoparticles nucleation surface interactions

High Temperature Heat Contents of Some Titanates of Aluminum, Iron and Zinc

K. R. Bonnickson1955-04-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHigh Temperature Heat Contents of Some Titanates of Aluminum, Iron and ZincK. R. BonnicksonCite this: J. Am. Chem. Soc. 1955, 77, 8, 2152–2154Publication Date (Print):April 1, 1955Publication History Published online1 May 2002Published inissue 1 April 1955https://pubs.acs.or…

Catalysis and Oxidation ReactionsThermal and Kinetic AnalysisChemical Thermodynamics and Molecular Structure