Grandes voladuras
Not available
Materials Literature
文献浏览
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。
Bibliography
Expansión en autoclave de los cementos españoles
Not available
Electrical and Thermal Properties ofBi2Te3
Samples of both $n$-type and $p$-type ${\mathrm{Bi}}_{2}$${\mathrm{Te}}_{3}$ containing from 3\ifmmode\times\else\texttimes\fi{}${10}^{17}$ to 5\ifmmode\times\else\texttimes\fi{}${10}^{19}$ extrinsic carriers were prepared and the phase diagram in the region about ${\mathrm{Bi}}_{2}$${\mathrm{Te}}_{3}$ has been clarif…
The thermal properties of alkali halide crystals II. Analysis of experimental results
Abstract The results reported in part I, together with similar results for sodium chloride, have been analyzed in terms of the spectrum of harmonic vibrations of the crystalline lattice; since the zero-point energy proves to be small, the analysis should conform fairly closely to that of a static lattice. ʘ0 and the c…
Electron Irradiation of Copper Near 10°K
The resistivity change induced by electron irradiation of zone-refined copper maintained at \ensuremath{\sim}10\ifmmode^\circ\else\textdegree\fi{}K has been measured over the range of bombarding electron energies from 0.70 to 1.37 Mev. The cross section for damage production is shown to be insensitive to the choice of…
MEASUREMENT OF THE FOAM STABILITY OF BEERS
The collapse of foams produced under controlled conditions by bubbling carbon dioxide through beer has been studied with particular reference to the rate at which liquid separates from them. If the volumes of the sample and of the foam produced from it are suitably adjusted, liquid is found to separate at a logarithmi…
Some Properties of Native Hemp, Jute, and Kapok Celluloses
The general chemical composition of untreated fibers of hemp, jute. and kapok has been studied, and the results have been compared to the composition of the corresponding α-celluloses and of the cellulose nitrates obtained by direct nitration of the original materials. After correction for nonglucose sugar residues, t…
ALLOYS OF MAGNESIUM
An alloy of high magnesium content, 0.008 to 0.1% beryllium and 0.25% alumninum, is reported. Calcium may aleo be present (0.02 to O.44%). The alloys could be melted in their oxide skin in air without taking fire, e.g., for aircraft landing mats. (auth)
Corrosion and Adsorption Studies Using Sulfonate Inhibitors
The existing literature pertaining to the use of sulfonates as corrosion inhibitors is reviewed briefly. An account is given of radiometric adsorption and desorption studies made of sodium and amine salts of sulfonic acids. Corrosion inhibitor studies also were made of these salts in H2S and CO2 environments; some of…
Some Experiences With Sodium Silicate As a Corrosion Inhibitor in Industrial Cooling Waters
The use of sodium silicate as a corrosion control agent for open-recirculating cooling water systems is discussed. Emphasis is placed on the results of tests made with low-carbon steel coupons in eight operating plants. The normal development of silica films, effect of prior corrosion and the influence of pH, water te…
Free Energy of Immersion of Compressed Powders with Different Liquids. II. Silica Powder
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFree Energy of Immersion of Compressed Powders with Different Liquids. II. Silica PowderJ. J. Van Voorhis, R. G. Craig, and F. E. BartellCite this: J. Phys. Chem. 1957, 61, 11, 1513–1519Publication Date (Print):November 1, 1957Publication History Published online1 May 2002Pu…
Curing Process in Phenolic Resins Electron-Microscopic Analysis
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCuring Process in Phenolic Resins Electron-Microscopic AnalysisRobert A. Spurr, Edward H. Erath, Howard. Myers, and Daniel C. PeaseCite this: Ind. Eng. Chem. 1957, 49, 11, 1839–1842Publication Date (Print):November 1, 1957Publication History Published online1 May 2002Publish…
The structure of the δ phase in the uranium–zirconium system
The delta phase of the U--Zr alloy was found to be primitive hexagonal with c = 3.0B and a = 5.03 A and with a composition UZr/sub 2/.(W.L.H.)
Buckling at High Temperature
Summary High temperatures affect buckling because the properties of the materials change and because thermal stresses and creep develop. A survey is given of the known solutions of problems arising in consequence of these phenomena and new theories of the creep buckling of columns and of thin circular cylindrical shel…
Study of Phase Transitions in WO3 with a High-Temperature X-Ray Diffractometer
WO3 undergoes a phase transformation from monoclinic to orthorhombic at approximately 320°C and from orthorhombic to tetragonal at 720°C. A detailed study of the variation of the unit cell dimensions over the range from room temperature to 1000°C has been carried out using high-temperature x-ray diffraction techniques…
Studies on Some Infrared Stimulable Phosphors
Physical properties of the two phosphor systems SrS: Ce,Sm, and SrS: Eu,Sm, as well as the base material SrS, have been studied. The optical studies concern spectra of transmission, excitation, fluorescence, phosphorescence, stimulation, and stimulated emission. Relative storage efficiencies of the major exciting wave…
Chelate Compounds of Nickel(II) with Picolinic Acid
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChelate Compounds of Nickel(II) with Picolinic AcidR. W. GreenCite this: J. Am. Chem. Soc. 1957, 79, 21, 5608–5611Publication Date (Print):November 1, 1957Publication History Published online1 May 2002Published inissue 1 November 1957https://pubs.acs.org/doi/10.1021/ja01578a…
The Vulcanization of Rubber with Sulfur
Abstract E. H. Farmer compiled a review of vulcanization which was published in 1946 as an important chapter in Volume II of “Advances in Colloid Science”. About two years later, Normann Bergem published a review under the same title. These authors dealt with the subject from rather fundamental points of view, but, be…
Investigation of Transport Phenomena in the Cryolite-Alumina System by Means of Radioactive Tracers
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInvestigation of Transport Phenomena in the Cryolite-Alumina System by Means of Radioactive TracersWilliam B. Frank and L. M. FosterCite this: J. Phys. Chem. 1957, 61, 11, 1531–1536Publication Date (Print):November 1, 1957Publication History Published online1 May 2002Publish…