Materials Literature
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Structural analyses of the products formed in the base-catalysed alkylation of 2-naphthol with glyoxal were performed by IR, 1H and 13C NMR spectroscopy and mass spectrometry. The final product, 7a,14c-dihydrobenzo[e]benzo[4,5]benzofuro[2,3-b]benzofuran (4), was determined to be in the cis rather than the trans form.…
The effects of the imidization temperature of poly(imide-siloxane) on the adhesion strength of epoxy resin/poly(imide-siloxane) joints were studied. The effects of the content and molecular weight of polydimethylsiloxane in poly(imide-siloxane) on the adhesion strength were also examined with samples of pyromellitic d…
We investigated the structural and physical properties of spinel compounds ${\mathrm{Mg}}_{2\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Ti}}_{1+\mathit{x}}$${\mathrm{O}}_{4}$ in the Mg[${\mathrm{Ti}}_{2}$]${\mathrm{O}}_{4\mathrm{\ensuremath{-}}}$Mg[MgTi]${\mathrm{O}}_{4}$ system. Polycrystalline samples of ${\mathrm{…
Abstract Optical examination of as‐grown {100} surfaces of sodium chlorate crystals grown from aqueous solution revealed the presence of elliptical growth hillocks. The hillocks were present on both enantiomorphous forms and originated from dislocations, inclusions, and microcrystals attached to the growing surface. T…
A mathematical treatment to describe the movement of particles on the slide wall of a rotor-spinning machine is given. The general solution to the differential equations of motion of such a particle is derived and the special case pertaining when the particle movement begins at time t = 0 then examined. From the gener…
The magnetization curves of single crystal samples of metastable orthorhombic ferroelectric paramagnetic β′-phase of Tb2(MoO4)3 were measured at 4.2K and 78K by means of the induction method in a pulsed magnetic field up to 300 kOe along [001] axis and perpendicular to it. The pulse duration was 0.01 s. The magnetizat…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectron affinity of dicarbonylnitrosylcobalt (Co(CO)2NO) measured by negative-ion photoelectron spectroscopyN. J. Turner, A. A. Martel, and I. M. WallerCite this: J. Phys. Chem. 1994, 98, 2, 474–477Publication Date (Print):January 1, 1994Publication History Published online…
Abstract Gd 2 (SO 3 ) 3 • 3 H 2 0 is obtained by passing gaseous SO 2 through a suspension of Gd 2 O 3 in H 2 O at room temperature until a clear solution is formed. Single crystals are obtained by heating to 70(2) °C for 6 days. The compound crystallizes in the triclinic space group P 1 with a = 6.499(6), b = 6.621(3…
The effect of a variety of solvents on adhesion between polyethylene moldings and molten polyethylenes has been investigated. The adhesive strengths between the molten polyethylenes heated in the range of 250 to 300°C and the polyethylene moldings, on which organic solvents, such as xylene, decalin, tetralin and o-dic…
An investigation has been conducted into the deposition of Nb-Al alloy from ambient-temperature molten salt electrolytes of AlCl3-NbCl5-BPC and AlCl3-Nb3Cl8-BPC. The results obtained are as follows.(1) An Nb-Al alloy deposit was obtained from an AlCl3-NbCl5-BPC melt of low NbCl5 content.(2) The valence of the Nb (V) i…
Solid state electrochemistry is an interdisciplinary area, undergoing nowadays a fast development. It is related on the one hand to chemistry, and on the other hand to crystallography, solid state physics and materials science. In this paper structural and electrical properties of some families of new materials intere…
It has been known for many years that some shaped charge geometries produce a radially expanding jet, referred to as jet incoherence. Incoherence greatly reduces the penetration capability of a jet. Experimentally, incoherence has been related to the sound speed of the material. In this paper, it is shown that the rad…
The temperature dependence of the anisotropy field and anisotropy constants of Sm2Fe17N3 was evaluated from the calculated magnetization curves, using crystal field parameters obtained in a previous study. The anisotropy field of Sm2Fe17N3 at 0 K was estimated to be 750 kOe; this estimate was confirmed by pulsed-field…
Extended X-ray absorption fine structure (EXAFS) and X-ray absorption near-edge structure (XANES) studies on [octa(2-ethylhexyloxy)phthalocyaninato]platinum [PtL] as a film at room temperature suggest that the structure consists of non-planar, concave discotic molecules packed perpendicular to the stacking axis.
A study of the interface between the crystal phase and the fluid phase has been carried out using self-consistent-field theory calculations. The results are expressed in terms of two interfacial factors: the surface characteristic scaling factor ${\mathit{C}}_{\mathit{l}}^{\mathrm{*}}$ and the characteristic thickness…
We present dynamical theory of soliton excitations in nonlinear coupled incommensurate chains which consists of two deformable chains of different atomic species, each with its own chemical potential, on the same substrate. In the continuum approximation, the motion equations are a set of coupled Sine-Gordon equations…
The jet from a shaped charge is formed by the collapse of its typically conical liner under the high pressures resulting from a detonation front. Nominally the charge is axisymmetric and the jet travels along the axis of symmetry of the charge. However, when asymmetries are present in the shaped charge the velocities…
Deux aspects de la méthode de calcul élasto-plastique des soutènements sont abordés.
Effects of acteoside (ACT) on crescentic-type anti-GBM nephritis in rats were investigated. When rats were treated with ACT from the 1st day after i.v. injection of anti-GBM serum, ACT inhibited the elevation of protein excretion into urine. In the ACT-treated rats, cholesterol and creatinine contents and antibody pro…
The effects of single addition (C, B<0.02%, Al<0.1%, others<0.5%) of various minor alloying elements such as C, Si, Mn, Cr, Mo, Cu, Nb, Ti, V, Al, W and B in 36%Ni base alloy on thermal expansion and Curie temperature (Tc) were investigated.The results obtained are as follows :(1) Thermal expansion coefficient between…