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。
Ultrasonic techniques are useful for the detection and location of partial discharge or corona sources associated with HV power apparatus, particularly oil-filled power transformers. Measurements are commonly made using narrow-band transducers operating in the frequency range from ~20kHz to ~300 kHz, and occasionally…
Abstract Theoretical calculations based on a mathematical model of cellulose acetate dry spinning were compared with experimental data. Both experiment and theory indicate that the velocity in the spin line becomes essentially constant and equal to the take‐up speed at relatively short distances from the jet. Spin lin…
Tissues fixed in osmium tetroxide or in combined osmium and glutaraldehyde (Hinde), embedded in Spurr's medium, cut at 0-5-I mum and mounted in Farrants' gum medium containing ethyl gallate, show good staining of lipid-contaning structures (droplets of triglyceride, membranes, mitochondria, etc.) in the light microsco…
Article A Coupling between Charge Transfer and Mass Transport Leading to Multi-Steady-States. Application to Localized Corrosion was published on December 1, 1975 in the journal Zeitschrift für Physikalische Chemie (volume 98, issue 1-6).
The results of an extensive investigation of the optical response of thirteen common optical materials to 2.5-MeV electron irradiation is reported. Radiation-induced absorption and absolute radioluminescence yields were measured in the wavelength range 0.14 to 0.9 μm for dose rates between 5 × 102 and 5 × 105 rad/sec…
Tensile experiments on polystyrene (PS) in various pressure-transmitting fluids were performed up to 4.0 kbar to study the effects of test media on the mechanical behavior of amorphous polymers under pressure. The fracture stress of PS in silicon oil environment was found to depend strongly on the viscosity of oil and…
(1975). THE STRUCTURES AND PROPERTIES OF FIBRES. Textile Progress: Vol. 7, No. 4, pp. 1-74.
The polarized Raman spectra of divalent cobalt ions at concentrations ranging from 2.5 to 10 wt% in cadmium chloride, cadmium bromide, manganese chloride, and cobalt chloride from 15 to 300\ifmmode^\circ\else\textdegree\fi{}K are reported. All five electronic transitions between the spin-orbit and trigonal crystal-fie…
A technique based on potentiokinetic anodic polarization in fused Na2SO4 has been developed for the purpose of estimating the hot corrosion resistance of Ni- and Co-base superalloys. Because it is relatively fast, this technique has been used to preliminarily identify promising candidate alloys, which may then be furt…
Abstract The known method of surface treatment of poly(tetrafluoroethylene) (Teflon) by alkali metals was studied quantitatively. It was shown that the reaction proceeds by an electrochemical mechanism in solid phase. The alkali metal acts as anode and Teflon as a cathodic active material of a typical galvanic corrosi…
Abstract. According to well‐known formulae for the mechanics of flexure stresses, the force required to snap a test specimen of uniform rectangular cross‐section is inversely proportional to its length and directly proportional to the width and the square of the thickness. For a specimen of circular cross‐section, the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectronic spectral study of some iron(II) magnetic isomers in solution and a spectral-structural correlation with their nickel(II) analogsLon J. Wilson, Danae. Georges, and Mitchell A. HoseltonCite this: Inorg. Chem. 1975, 14, 12, 2968–2975Publication Date (Print):December…
Abstract In the initial stage of the development of transcrystallinity, nuclei appear sporadically on the substrate. The growth rate and melting temperature of the transcrystalline region are found to be the same as those of spherulites nucleated in the bulk of the polymer. Nucleation densities n s at the interface, a…
Abstract The dynamic mechanical properties of thermoplastic urethane elastomers have been compared for materials based on different diisocyanate structures, either 4,4′‐diphenylmethane diisocyanate (MDI) or an isomeric ratio of tolylene diisocyanate (TDI). Two comparable series of polymers were prepared with a polycap…
Type material of Skeletonema subsalsum has been examined by light and electron microscopy. The species belongs to Skeletonema and is not conspecific with Stephanodiscus subsalsus. Skeletonema subsalsum is distinguished from S. costatum morphologically mainly by structure of connecting processes, those of S. subsalsum…
The dielectric constants and two elastic constants were measured for a series of mixtures of two nematic liquid crystals, MBBA and PEBAB. The materials covered the range from 0 to 10% PEBAB. The parameters were calculated from the measured voltage dependence of capacitance. The dielectric constants vary linearly with…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCarbon-13 and proton nuclear magnetic resonance spectra of some pentacyanoferrate(II) complexesJohn M. Malin, Charles F. Schmidt, and Henrique E. TomaCite this: Inorg. Chem. 1975, 14, 12, 2924–2928Publication Date (Print):December 1, 1975Publication History Published online1…
The valve morphology of the brackish-water plankton diatom Skeletonema subsalsum is dependent on salinity. In cells grown at salinities of 3‰ or less, the valve faces were flat and the connecting processes much reduced in length. Cells grown at salinities of 5‰ or higher had dome-shaped valves and extended connecting…
The field dependence of the proton NMR second moment ${M}_{2}(H, T)$ of powder N-methylphenazinium-tetracyanoquinodimethane (NMP-TCNQ) and (DMP-TCNQ), the analogous material with a deuterated methyl, shows that at 4.2\ifmmode^\circ\else\textdegree\fi{}K there are unpaired electrons localized on \ensuremath{\sim} 6% of…
The corrosion of copper in oxygenated sulfuric acid solutions was studied by means of weight‐loss and polarization curves. At a given potential, the rate of copper dissolution is greater in the presence than in the absence of oxygen reduction, which is contrary to the conventional theory of mixed potentials. An explan…