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。
An experimental study on the thermal glow luminescence in plastically deformed KCl crystals has been carried out. The thermal glow curves of plastically deformed crystals become simple and similar irrespective of the origin of crystals, in contrast with the case of “as-cleaved” crystals. In the case of ultra violet il…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal Analysis of Phosphor Raw Materials.R. C. Ropp and M. A. AiaCite this: Anal. Chem. 1962, 34, 10, 1288–1291Publication Date (Print):September 1, 1962Publication History Published online1 May 2002Published inissue 1 September 1962https://pubs.acs.org/doi/10.1021/ac60190…
The nuclear quadrupole coupling constant of Na 23 in sodium nitrite. NaNO 2 . has been investigated between 18 °C and 215 °C. Below the transition temperature (163 ± 2)°C the asymmetry parameter η= (φ xx — φ yy )/φ zz decreases with increasing temperature and goes to zero at the transition point. Above 163 °C η is neg…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFerrosiloxanes and Ferrosiliconate AnionsHubert. Schmidbaur and Max. SchmidtCite this: J. Am. Chem. Soc. 1962, 84, 18, 3600–3601Publication Date (Print):September 1, 1962Publication History Published online1 May 2002Published inissue 1 September 1962https://pubs.acs.org/doi/…
An instrument is described which permits measurement of all three vector components of the magnetic moment of a specimen at high temperatures. The associated experimental technique is also given, along with references to typical experimental results.
Abstract An apparatus is described for studying the fatigue of rubber strips under repeated simple extensions in different atmospheres. The fatigue life is shown to be greatly increased in vacuo for vulcanizates of natural rubber and SBR. The effect of oxidation inhibitors and radical acceptors has been examined; they…
While the moisture permeability index and insulation value define the heat transfer characteristics of fabric systems under equilibrium conditions, such conditions do not always occur. Moisture may accttmulate in clothing during periods of activity due to unevaporated sweat or sweat which has evaporated from the skin…
A study was made of t he thermal behavior in a vac uum of polystyrcne, polytetra fluoroethvlcne, poly (a-m et h y 1 s tyrcne), polypropylene, polyisobutylen(', and poly (meth yl methacrylate), when pyrolized at 500, 800, and 1,200 .0C. The v olatile products of degradation were collected and fractionated, and the frac…
The internal friction peak for nitrogen in dilute solutions in very pure chromium occurs at 160°C for ∼1 cps but is unstable due to partial precipitation of nitrogen. Interpretation of internal friction data at low frequencies and elastic aftereffect measurements in terms of the theory of Snoek gives the lattice diffu…
ABSTRACT Creep of narcotized Metridium and Calliactis body-wall at constant tensile stress has been studied quantitatively. It was found to be reversible, and seemed to be controlled by the mesogloea. Its course could be represented by equations of the form where the retardation time τ was about 1 hr. for Metridium an…
An experimental investigation of the interdiffusion behavior of gases in a low permeability graphite was performed by sweeping the opposite faces of a graphite septum with helium and argon at uniform pressure and measuring the diffusive flux of both gases. The objectives were to ascertain the diffusion mechanism, to v…
Triple-layer antireflection coatings on glass (n≈1.5) can provide a broader region of low reflectance than single- or double-layer coatings. Of the possible triple-layer combinations, the quarter-half-quarter construction has been found to be most suitable for the visible and near infrared. Calculations of reflectance…
Investigations during the last few years have shown that a number of phases, especially borides, of the seventh and eighth group metals are isomorphous with cementite or crystallize in structures closely related to that of cementite. In this paper the recently obtained structural data are summarized and discussed. The…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation M. G. Holland; Thermal Conductivity of Several Optical Maser Materials. Journal of Applied Physic…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNuclear Magnetic Resonance Spectra of Porphyrins*Winslow S. Caughey and W. S. KoskiCite this: Biochemistry 1962, 1, 5, 923–931Publication Date (Print):September 1, 1962Publication History Published online1 May 2002Published inissue 1 September 1962https://doi.org/10.1021/bi00911…
Abstract Data are reported for the temperature coefficient of the retractive force for a natural rubber sample which had been crosslinked by irradiation. These measurements differ from those previously reported in allowing a longer interval for the attainment of equilibrium, in covering a wider range of elongations, a…
Interactions between identical or nonidentical rare-earth ions that result in the quenching of fluorescence of Eu3+ or Tb3+ have been studied. Comparison of the intensities of emission of Eu3+ as a function of its concentration in various oxides indicates that interactions that result in the quenching of emission from…
Based on the theory of anisotropic elasticity, the stress field of a single dislocation, the force between two parallel dislocations, and the stress field of various types of infinite dislocation walls and arrays are fully analyzed for a hexagonal crystal. The attraction sector of an edge dislocation with respect to a…
Phase relations at liquidus temperatures in the system La 2 O 3 ‐TiO 2 were studied in air. The existence of two previously unreported compounds, La 2 O 3 . TiO 2 and 2La 2 O 3 ‐TiO 2 , is postulated on the basis of X‐ray and microscopic examination of crystalline samples, and in the case of La 2 O 3 .‐TiO 2 , on a ma…
Article Untersuchungen über die gleichmä§ige Auflösung und den Lochfra§ von Aluminiumelektroden* was published on September 1, 1962 in the journal Zeitschrift für Physikalische Chemie (volume 34, issue 1_4).