Materials Literature
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An amorphous thin plate of vanadium pentoxide, V2O5, prepared by ultrafast quenching from the melt (splat-cooling) has been examined by large-angle X-ray scattering (LAXS) and its structure thereby investigated. The intensities at 450 points within the θ range 2° < θ < 70° were measured at room temperature (22°C). The…
Starting from a N-particle diffusion equation, the effective particle (self-) and concentration diffusion coefficients of interacting Brownian particles are studied theoretically. These two diffusion coefficients defined by distinct ways are different for interacting systems. By taking into account both potential and…
Abstract A general criterion for craze formation is presented. Crazes are deformation zones that are common to both glassy and semicrystalline polymers. Crazes are composed primarily of fibrils. This paper attempts to describe the process that transforms unoriented glassy and semicrystalline polymeric solids into a fi…
Abstract Mikrokristallines Cs 2 Te 5 entsteht aus stöchiometrischen Ansätzen der reinen Elemente in überkritischem Ammoniak. Cs 2 Te 5 kristallisiert orthorhombisch in der Raumgruppe Cmcm mit Z 4 und hat folgende Gitterkonstanten: a 9,37 9 Å, b 12,28 2 Å, c 10,12 8 Å. In der Struktur liegt ein eindimensional‐u…
New aspects of molecular interactions in corrosion inhibition are reported in this first investigation of benzotriazole on copper using surface enhanced Raman scattering (SERS). The observation of hysteresis in the Raman intensity of concentrated solutions as a function of applied voltage is attributed to a conformati…
Abstract The pressure‐volume‐temperature (PVT) properties of blends of poly(2,6‐dimethyl‐1,4‐phenylene ether) (PPO) with polystyrene (PS) have been studied experimentally in both the glassy and melt states at 0, 20, 40, 50, 60, 80, and 100% PPO content. In all compositions a strong glass transition was observed varyin…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfluence of copper and zinc on the growth of a freshwater alga, Scenedesmus quadricauda: the significance of chemical speciationRichard. PetersenCite this: Environ. Sci. Technol. 1982, 16, 8, 443–447Publication Date (Print):August 1, 1982Publication History Published online…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic interactions in metal complexes of pentadentate binucleating ligands. 1. Synthesis and properties of binuclear copper(II) compounds containing single-atom-bridging ligands. Crystal and molecular structure of a binuclear .mu.-hydroxo-bridged copper(II) complex of 1,5…
Electron-irradiation induced amorphization of NiTi alloys has been investigated in a temperature range from 50 to 393 K by high voltage electron microscopy with the following results: A crystalline-amorphous transition occurs when the total dose of electrons reaches a certain value. The critical value decreases with d…
Abstract The lysis of phosphatidylcholine (PC) liposomes was sensitized to visible light (>500nm) by hematoporphyrin (HP) incorporated in the liposomes (0.09‐1.5%, wt/wt) or in the external buffer (1‐15 μM). The lytic mechanism changed from the Type II pathway mediated by singlet oxygen ( 1 O 2 ) at low HP concentr…
Summary Cardenolides (cardiac glycosides) are reported for the first time from wild‐collected material of Erysimum native to North America. For two seed samples of wild origin and for 24 leaf samples from greenhouse‐grown plants, total cardenolide content was determined by spectrophotometric assay in reactions with 2,…
Very precise electrical conductivity data on a series of six glasses (molar composition 25[xNa 2 O+(l−x)K 2 O]‐5Al 2 O 3 −70SiO 2 with 0.95 ≤x≤l) have been obtained over a large temperature range (∼310°C). Analysis of these data suggests that the preexponential term in the Arrhenius conductivity equation is temperatur…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTheoretical study of o-quinone complexes of ironDouglas J. Gordon and Richard F. FenskeCite this: Inorg. Chem. 1982, 21, 8, 2916–2923Publication Date (Print):August 1, 1982Publication History Published online1 May 2002Published inissue 1 August 1982https://pubs.acs.org/doi/1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrochemical characterization of a novel rhodium(II) dimer, Rh2(ONHCCF3)4Karl M. Kadish, D. Lancon, A. M. Dennis, and J. L. BearCite this: Inorg. Chem. 1982, 21, 8, 2987–2992Publication Date (Print):August 1, 1982Publication History Published online1 May 2002Published ini…
Abstract An evaluation of the physical properties of iron, cobalt, nickel, and copper high oxidation states in oxides shows the influence of chemical bonding and structural factors on the electronic configuration. Such correlations are illustrated by the synthesis of the first six‐coordinated iron(V) oxide: La 2 LiFeO…
In fine-grained polycrystalline solids both lattice and grain-boundary diffusion contribute to the effective volume diffusivity. In tracer diffusion experiments the concentration–penetration profiles can be suitably analysed to distinguish between these two components. This paper presents new data on 59Fe diffusion in…
Abstract Clayey sediments of marine origin having sensitivities (ratio of undisturbed to remolded shear strength) as high as 1000 at a reduced salt concentration are found around Ariake Bay, Kyushu, Japan. The clay fraction of the sediments contains smectite as a principal mineral (33–42%) in contrast to the illitic c…
Based on a tunneling pair recombination concept, rigorous expressions of thermostimulated luminescence (TSL), phosphorescence (PP), and photostimulated luminescence (PSL) are derived. A novel method of examining the ratio of PSL and PP at fixed temperatures and fixed times is shown to be useful for the determination o…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNew trinuclear, oxo-centered, basic carboxylate compounds of transition metals. 2. Synthesis and x-ray structure of V3(O)3(THF)(C6H5CO2)6, a compound with a deviant structureF. Albert Cotton, Gregg E. Lewis, and Graham N. MottCite this: Inorg. Chem. 1982, 21, 8, 3127–3130Pub…
The thermoluminescence properties of three different preparations of lithium borate have been studied with specific reference to their use in medical dosimetry. The properties of lithium borate powder doped with copper make it more attractive for low dose measurements than the more conventional phosphor doped with man…