Materials Literature
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The first-order Raman spectra of vitreous Si${\mathrm{O}}_{2}$ have been studied as a function of sample fictive temperature ${T}_{F}$ for $900\ifmmode^\circ\else\textdegree\fi{}\mathrm{C}\ensuremath{\le}{T}_{F}\ensuremath{\le}1550\ifmmode^\circ\else\textdegree\fi{}\mathrm{C}$. Three observations were made: (1) The br…
The interaction of Ti${\mathrm{O}}_{2}$(110) with ${\mathrm{O}}_{2}$, ${\mathrm{H}}_{2}$, CO, and C${\mathrm{O}}_{2}$ was studied by means of low-energy electron diffraction, x-ray photoelectron spectroscopy, electron energy-loss spectroscopy, thermal desorption, electron paramagnetic resonance, and measurements of ch…
The trap distribution analysis of CaSO 4 :Dy has been carried out using a fractional-glow technique. It shows that the TL process in CaSO 4 :Dy involves quasi-continuous distribution of traps with activation energies ranging from 1.15 to 2.39 eV in the 340-370K glow-temperature range. The trap spectrum of CaSO 4 :Dy r…
A method of obtaining polymeric materials showing high anisotropy of electrical conductivity (up to 10 8 ) is reported. Electrical properties of polycarbonate films doped with TTT-TCNQ crystalline CT complex obtained using this method are discussed.
A stochastic mixture model is proposed for the dielectric formed by the powder of an isotropic polycrystalline material included in an embedding medium of air or a non-polar substance. The relevant expression of the complex dielectric constant of the mixture is obtained in terms of the dielectric parameters of the mix…
The salt bridge between Lys-13 (epsilon-NH3+) and Leu-129 (alpha-COO-) in lysozyme was converted to an amide bond by 1-ethyl-3-[3-(dimethylamino)propyl]carbodiimide hydrochloride (EDC) reaction in the presence of imidazole (0.3-1 M) at pH 5 and room temperature, followed by dialysis at pH 10. Absence of imidazole unde…
<div class="htmlview paragraph">In this paper the strength of material based on the stressing in rolling contact is described. The investigations result in a guideline according to which the case depth of slewing bearing rings can be determined, if the load on the rolling elements, their size, and the number of…
The static critical behaviour at the normal to incommensurate phase transition in Rb2ZnCl4 has been investigated by means of diffuse X-ray scattering. The measured values of the critical exponents gamma and nu are in good agreement with theoretical estimates for the d=3XY model. Measurements of the diffuse scattering…
The critical opalescence of a binary polymer mixture consisting of polyvinyl methyl ether and deuterated polystyrene was measured by small-angle neutron scattering. In accordance with a mean-field treatment, it was found that the critical exponents $\ensuremath{\nu}$ and $\ensuremath{\gamma}$ are 0.5 and 1, respective…
The alkali metal thermoelectric converter (AMTEC) is a device for the direct conversion of heat to electrical energy. The sodium ion conductor beta"- alumina is used to form a high-temperature regenerative concentration cell for elemental sodium. An AMTEC of mature design should have an efficiency of 20 to 40 percent,…
(1983). Geochemical role of micas in mineral associations: classification, chemistry, and genesis of micas. International Geology Review: Vol. 25, No. 9, pp. 993-1003.
The temperature dependence of the spin Hamiltonian parameters of Eu2+ in orthorhombic sites of KCl crystals has been measured in the range 87–573 K using EPR techniques. In this work, we fit an analytical expression for the predominant parameter b02 as a function of temperature, b02=a0+a1 T+a2 coth θ/2T. With eight ex…
Abstract Below T c = 1.5 K TbAsO 4 is an Ising ferromagnet with induced magnetic moments. A superstructure of the magnetic moments found by Schäfer and Will may be explained by very small ferromagnetic domains. A simple estimation of the free energy at T = 0 yields 0.05 μm for the thickness of these domains. In the or…
Various techniques for tritium removal from the liquid eutectic Li17Pb83 under vacuum are considered as candidates for the tritium removal system (TRS) for the Mirror Advanced Reactor Study (MARS). The TRS baseline parameters require the removal of 60% of the tritium contained in the liquid metal at a tritium partial…
The paper deals with full scale laboratory investigations on a circuit composed of three single phase voltage transformers (10/\sqrt{3}kV, 50 VA) connected to an ungrounded source supply with a zero sequence capacitance. About a hundred energizing operations were performed. Some records of transient states obtained by…
The TRIO-01 experiment is a comprehensive test of in-situ tritium recovery from a miniaturized solid breeder blanket assembly. Other solid breeder blanket performance factors such as thermal hydraulics, tritium permeation, and gas phase chemistry will be tested as well. The capsule assembly is irradiated in the A2 cor…
Effect of manganese on magnetic properties of an Fe-24Cr-12Co-1.5Si alloy (weight fraction) has been systematically studied by electron microscopy and magnetic measurements, in order to estimate the availability of certain grades of ferro-chromium as raw material for manufacturing Fe-Cr-Co magnet alloys. It has been f…
Vibrational assignments are proposed for solid NaNH 2 SO 3 on the basis of room temperature polarized Raman spectra of single crystals. Infrared data for the region 4000–50 cm −1 of the polycrystalline sample are also presented. The results indicate that (1) there is no water of crystallization, (2) the hydrogen bondi…
This study was designed to examine the intranight evolution of spontaneous electrodermal activity (EDA). Eight paid volunteer male students were recorded for 3 complete nights (after a habituation night). The results show that: during the first sleep cycle, EDA is significantly lower than during the rest of the night;…
In a previous paper by the first author, a three-dimensional analysis for the calculation of the leakage magnetic field in power transformers was presented. The experimental verification of this analysis is the subject of this paper. Extensive comparisons between calculated and measured values of flux densities in the…