Materials Literature
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Phase formation in the system Ca(OH) 2 —Al 2 O 3 —Ca(NO 3 ) 2 —H 2 O was investigated at 25° and 80°e. The formation of an AFt phase was not observed. Three AFm phase were observed: one is the AFm phase previously reported by Kuzel; the remaining two appear not to have been previously identified. The compatibility rel…
Abstract Results are presented of a diagenetic study from the 1300 m thick Oligocene Molasse deposits penetrated by the Thônex geothermal exploration well (Geneva, Switzerland). The x-ray diffraction (XRD) studies of fine-grained rocks indicate the following diagenetic changes: a decrease of illite/smectite (US) expan…
Abstract The effects of yttrium additions on the oxidation behaviour of Fe‐20Cr‐5Al(wt%) alloys have been investigated in oxidation tests and cyclic heating‐element tests at temperatures ranging from 1100 to 1400°C in air. Experimental results showed that the oxidation resistance of the alloys depends sensitively on t…
The Isothermal Dendritic Growth Experiment (IDGE) is an orbital space flight experiment, launched by NASA, in March, 1994, as part of the United States Microgravity Payload (USMP-2). The IDGE provided accurately measured dendritic growth rates, tip radii of curvature, and morphological observations of ultra-pure succi…
Rayleigh hysteresis, as defined by the well-known Rayleigh relations, has been observed not only when magnetization of pyrrhotite-bearing KTB-samples is measured in parallel to a weak dc magnetic field, but also in experiments where field and measuring directions have been adjusted strictly perpendicularly to each oth…
The origin of second harmonic generation (SHG) of Li3VO4 was investigated from the viewpoint of the band structure by using the tight-binding method. The tight-binding parameters were optimized to reproduce the density of states (DOS) obtained from x ray photoelectron spectroscopy and the optical band gap. Although Li…
Abstract A series of α‐methylene‐ N ‐alkyl‐2‐pyrrolidone monomers with varying length of the alkyl chain from C 1 to C 8 were synthesised. The monomers were subjected to free radical polymerisation to yield a range of polymers each with a different balance in hydrophobic/hydrophilic properties originating from the pyr…
<div class="htmlview paragraph">In a joint research project between industrial companies and a number of research institutes, nitrogen oxide conversion in oxygen containing exhaust gas has been investigated according to the following procedure</div> <div class="htmlview paragraph"> <ul class="list…
The effect of oxygen ion implantation on the electrical and optical properties of Sn-doped In2O3 (ITO) thin films, sputter deposited from a planar magnetron source on glass substrates, is described. The films were characterized as a function of the implanted dose (3×1013–1×1016 O+ cm−2) by Hall effect, resistivity, an…
The reaction of an aqueous solution of formaldehyde with gelatin dispersed in a potassium bromide pellet is monitored in real time by FT-IR spectroscopy. Principal component regression analysis of the spectra recorded at different times is carried out. On the whole, the latter results and the observed spectral changes…
The cold rolling texture development of two α/γ duplex stainless steels (DSS) with similar volume fractions of both phases but with totally different microstructures were investigated. Due to the limited number of available pole figures using X-rays, for the calculation of the ODFs both a direct method and a recent it…
The thickness stability of the film between air bubble/oil drop and oil/oil drops in an induced air flotation process in the presence of flocculent was analyzed. A cationic, high molecular weight, polymeric flocculeni was used in the demulsification of a crude oil-in-water emulsion. A novel capillary force balance tec…
Abstract New amphiphiles with reactive tosylate groups and ionic sulfuric acid half esters based on the rod‐like polysaccharide cellulose were designed via homogeneous tosylation followed by sulfation with the SO 3 ‐pyridine complex in N,N ‐dimethylacetamide. At appropriate degrees of functionalization the polymers ar…
Abstract Phosphorescence energy transfer within ligand bridged diruthenium(II) compounds of the form [(bpy)2Ru(II)(B)Ru(II)(becbpy)2]4+, where bpy, becbpy, and B are 2,2′-bipyridine, 4,4′-bis(ethoxycarbonyl)-2,2′-bipyridine, and a bridging ligand, respectively, was investigated in butyronitrile solution in the tempera…
Some effects of material degradation on failure mechanisms of brittle damage materials are investigated. Conditions for the localization of deformation within a shear band are established for rate independent damage materials. In contrast with previous work on shear band initiation that relied on plasticity and flow t…
The proton ENDOR spectra of ${\mathrm{BP}}_{0.15}$${\mathrm{BPI}}_{0.85}$ taken between 90 and 290 K allow a direct determination of the local polarization distribution W(p) of the protons in the hydrogen bonds linking the phosphate and phosphite groups to chains. The temperature dependence of the Edwards-Anderson gla…
Flow was created in freely suspended liquid crystal films (FSLCFs) in the smectic-C phase using gradients in the surface tension to drive the motion. The director field was distorted into a pattern of vortices which wind upon themselves while a temperature gradient was applied. A dependence of the pattern in the direc…
Equilibrium two-body correlations in liquids composed of deformable molecules are formulated with use of the density-functional theory and the interaction site formalism. As applications, we study two model systems, liquid nitrogen and simplified liquid n butane, in which each molecule has two stable bond lengths. The…
Abstract This paper discusses theory and experiments on nonisothermal foam growth during foam sheet formation in an extrusion process. The extruded foam sheet expands and cools simultaneously when exposed to ambient temperature. A viscoelastic cell model in the literature was modified to include heat transfer and gas…
The dynamical behavior of microemulsion and sponge phases is studied with a time-dependent Ginzburg-Landau model. The model has been shown previously to capture many of the essential static properties of these systems. Using a field-theoretic perturbation theory, we calculate the frequency-dependent (complex) viscosit…