Materials Literature
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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…
Summary Pore size distributions in the 10/10 4 nm e.c.d. range in aggregates from three New Zealand soils with largely monomineralic clay fractions, were determined by mercury porosimetry after oven drying and also after critical point drying following methanol and then CO 2 exchange from a range of water contents. A…
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetal-nitroxyl interactions. 31. Single-crystal EPR spectra of a spin-labeled vanadyl porphyrinReddy Damoder, Kundalika M. More, Gareth R. Eaton, and Sandra S. EatonCite this: Inorg. Chem. 1983, 22, 20, 2836–2841Publication Date (Print):September 1, 1983Publication History P…
Abstract Einkristalle von AlTaO 4 wurden zwischen 1310–1360°C dargestellt und mit röntgenographischen Methoden die Kristallstruktur bestimmt. Diese Verbindung kristallisiert tetragonal mit a = 460,6 5 und c = 298,5 pm in der Raumgruppe D –P4 2 /mnm. AlTaO 4 besitzt eine ungeordnete Metallverteilung mit Rutilstruktur u…
The equilibrium pH index is proposed as a replacement for the Langelier Saturation Index (LSI) and the Ryzner's Stability Index (RSI) as a method for utility power stations to predict whether their cooling water will form calcium carbonate scale in their condensers. Both the LSI and RSI are explained, and it is seen t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHighly reduced organometallics. 15. Coordinatively unsaturated tetranuclear hydrido carbonyl clusters of molybdenum and tungsten. Structural characterization of tetrakis(tetrapropylammonium) tetrakis(tricarbonylhydromolybdate) ([(n-C3H7)4N]4[HMo(CO)3]4)Jiann T'suen Lin and J…
Diffuse interfaces are observed in the interconnected structure of a phase‐separated K 2 O‐Al 2 O 3 ‐CaO‐SiO 2 glass. With continued electron irradiation in the scanning transmission electron microscope, the interfaces are observed to sharpen with little attendant change in phase morphology, indicating that the as‐coo…