Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The minimum amounts of lanthana and neodymia required to stabilize zirconia into a cubic form are 30 and 20 mole %, respectively, at 980°C. X‐ray diffraction studies have established the upper limit of the two cubic solid solution regions as approximately 40 mole %. This stabilized region of the phase diagrams broaden…
Joyce C. Lewin; Silicon Metabolism in Diatoms. II. Sources of Silicon for Growth of Navicula Pelliculosa. 123, Plant Physiology, Volume 30, Issue 2, 1 March 195
A study is made of the various factors governing the flow of air through plugs of textile fibres. The magnitude of the porosity effect differs from that predicted by various hydrodynamical theories. The nature of the fibre surface is also found to affect the flow. An empirical relation between flow and the various plu…
There are two extreme types of activated carbon and carbon black although structures intermediate between these two extremes are more usual. This work has established that in one extreme, the oxidized form (" H " carbon), the carbon has a pronounced quinonoid structure which creates a number of fixed olefinic bonds. I…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of the Polymerization of a Cyclic Dimethylsiloxane1W. T. Grubb and Robert C. OsthoffCite this: J. Am. Chem. Soc. 1955, 77, 6, 1405–1411Publication Date (Print):March 1, 1955Publication History Published online1 May 2002Published inissue 1 March 1955https://pubs.acs.…
Commonwealth Scientific and Industrial Research Organization, Australia1 1 The work described in this paper was carried out as part of the research program of the Division of Soils, of this Organization, at the Plant and Soils Laboratory, George Street, Brisbane, Queensland. Acknowledgment is made to C. S. Piper, chem…
The relation between self-diffusion coefficient and viscosity is examined in terms of the early hydrodynamic theory and Eyring's kinetic theory. They differ by a factor of about 6. A detailed consideration of the kinetic theory shows that this factor should have been included in Eyring's derivation of viscosity if a p…
During normal spontaneous inspiration pulmonary blood flow increases in spite of an increase in resistance to flow in the pulmonary bed. The enhancement of pulmonary flow is caused by an augmentation of venous return due to thoracic aspiration. The right heart acts as a moderator for the pulmonary flow by temporarily…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIntroduction to Nuclear Engineering.W. R. KanneCite this: J. Am. Chem. Soc. 1955, 77, 5, 1394Publication Date (Print):March 1, 1955Publication History Published online1 May 2002Published inissue 1 March 1955https://pubs.acs.org/doi/10.1021/ja01610a108https://doi.org/10.1021/…
The system BaO‐TiO 2 was investigated using quenching, strip‐furnace, and thermal techniques. Five compounds were found to exist in the system: Ba 2 TiO 4 , BaTiO 3 , BaTi 2 O 5 , BaTi 3 O 7 , and BaTi 4 O 9 . Of these, only barium metatitanate (BaTiO 3 ) melts congruently (at 1618°C.). The dititanate melts incongruen…
Los autores presntan los resultados do sus estudios sobro las dimensiones apropiadas que se han de dar a los hornos rotatorios, en relación al transporte del material y a las condiciones de transmisión del calor; dichos resultados prueban la existencia de una regularidad perfecta. Estudian, especielmente, la influenci…
No disponible
El propósito fundamental de asta investigación ha sido el determinar cómo influyen sobre el color de los productos cocidos los constituyentes de la arcilla, y, si es posible, determinar la naturaleza de loa compuestos y soluciones sólidas que dan lugar a las diversas coloraciones. También se realizaron ensayos con el…
No disponible
ADVERTISEMENT RETURN TO ISSUEPREVArticleDielectric Materials and Applications.Charles P. SmythCite this: J. Am. Chem. Soc. 1955, 77, 6, 1714Publication Date (Print):March 1, 1955Publication History Published online1 May 2002Published inissue 1 March 1955https://pubs.acs.org/doi/10.1021/ja01611a117https://doi.org/10.10…
The dielectric and thermal properties and lattice dimensions of lead·strontium titanate were investigated, the solid solution being realized in the whole range of molar percentage. It was found that, lead·strontium titanate is also ferroelectric as lead·barium titanate and barium·strontium titanate. As the content of…
The techniques and results of a previous paper are applied to the calculation of the second Born approximation of the one-photon radiative corrections to the scattering of electrons by nuclei. Nonrelativistic and high-energy approximations are calculated explicitly for pure Coulomb scattering. Modifications due to the…
Abstract Man hat eine Anzahl von Daten zur Verfügung, die sowohl auf Laboratoriumsmessungen als auch auf praktischer Erfahrung beruhen und die eine grobe Materialauswahl für eine mit Schwefelsäure arbeitende Apparatur ermöglichen. Was die Laboratoriumsmessungen anbetrifft, so wurden diese früher meistens mit Schwefels…
Abstract While investigating the absorption of carbon dioxide in sodium carbonate–bicarbonate solutions, apparently erratic variations of absorption coefficients were observed in earlier work. In an attempt to find an explanation for these variations, density, relative viscosity, pH and relative surface tension were d…
Ceramic coatings were prepared from materials having low absorption coefficients for thermal neutrons. They were specifically designed for application to typical high‐temperature alloy parts for use in nuclear reactors. Best results were obtained with boron‐free coatings of the frit‐refractory type, in which a high‐ba…