Materials Literature
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( CeO 2 ) 0.8 ( SmO 1.5 ) 0.2 (CSO) has been suggested for solid oxide fuel cell (SOFC) applications, because of its higher electrical conductivity and chemical stability, compared to other ceria‐based materials. However, CSO is difficult to densify under conditions compatible with other SOFC components. A thin film s…
Experiments are performed on axisymmetric spreading of viscous drops on glass plates. Two liquids are investigated: silicone oil (M-100), which spreads to ‘infinity’, and paraffin oil, which spreads to a finite-radius steady state. The experiments with silicone oil partly recover the behaviour of previous workers’ dat…
Thermoreflectance measurements performed for the first time on laser diode mirrors have supplied a vast amount of novel information. Heating efficiency has been found to depend sensitively on the mirror treatment, the mirror structure design, the geometry of a deposited heat spreader, the type of coupling of the laser…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIn situ Raman spectroscopy of peroxide ions on barium/magnesium oxide catalystsJack H. Lunsford, Xueming Yang, Kristjan Haller, Jaan Laane, Gerhard Mestl, and Helmut KnoezingerCite this: J. Phys. Chem. 1993, 97, 51, 13810–13813Publication Date (Print):December 1, 1993Publica…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUrethanes and polyurethanes bearing furan moieties. 4. Synthesis, kinetics and characterization of linear polymersSami Boufi, Mohamed Naceur Belgacem, Joel Quillerou, and Alessandro GandiniCite this: Macromolecules 1993, 26, 25, 6706–6717Publication Date (Print):December 1,…
Nitrogen (N) alloying was found to inhibit active dissolution and to introduce a secondary loop with fluctuating currents in the anodic polarization curve of type 316LN stainless steel (SS) (UNS S31653) in 1 N hydrochloric acid (HCl) solution. Potentiostatic tests in this potential range confirmed the occurrence of cu…
A systematic Raman-scattering investigation has been carried out on sol-gel alumina prepared by the hot-water hydrolysis and condensation of Al(${\mathrm{OC}}_{4}$${\mathrm{H}}_{9}$${)}_{3}$, the Yoldas process, as a function of process variables such as the time spent in the sol phase. Nanocrystalline boehmite, \ensu…
We present a new numerical method for the solution of the problem of diffraction of light by a doubly periodic surface. This method is based on a high-order rigorous perturbative technique, whose application to singly periodic gratings was treated in the first two papers of this series [ J. Opt. Soc. Am. A10, 1168, 23…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSequential protonation of meso-[p-(dimethylamino)phenyl]porphyrins: charge-transfer excited states producing hyperporphyrinsEmmanuel C. A. Ojadi, Henry Linschitz, Martin Gouterman, Robert I. Walter, Jonathan S. Lindsey, Richard W. Wagner, P. R. Droupadi, and Wending WangCite…
Raman scattering studies were carried out to investigate the effects of ion implantation on the structure of diamond, graphite, and polymers. Carbon phases produced by chemical vapor deposition (CVD diamond) and rf discharge (diamondlike carbon or DLC) were also analyzed. Two types of amorphous carbon phases were dist…
Abstract In the present work, we have tested the consistency and validity of the Tougaard, Shirley and straight‐line methods for determination of peak intensities in XPS. Intensities were determined from essentially all photoelectron peaks (with Mg Kα and Al Kα radiation) from seven polycrystalline elemental solids (C…
Abstract The ring‐opening polymerization of L‐lactide with stannous octoate was investigated in the presence of pentaerythritol. By this way it was possible to prepare higher molecular weight star‐shaped poly( L ‐lactide)s compared with the linear ones obtained by stannous octoate only. The weight‐average molecular we…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHydrolytically stable organic triester capped polyoxometalates with catalytic oxygenation activity of formula [RC(CH2O)3V3P2W15O59]6- (R = CH3, NO2, CH2OH)Yuqi Hou and Craig L. HillCite this: J. Am. Chem. Soc. 1993, 115, 25, 11823–11830Publication Date (Print):December 1, 19…
Light microscopy and transmission electron microscopy of thin sections and metal-shadowed specimens showed that the sheath of Leptothrix discophora SP-6 (ATCC 51168) is a tube-like extracellular polymeric structure consisting of a condensed fabric of 6.5-nm-diameter fibrils underlying a more diffuse outer capsular lay…
Several techniques exist to evaluate the water vapor transport characteristics of clothing materials. The most common techniques include guarded hot plate sweating skin simulants and cup-type moisture vapor transmission rate tests. Theoretically, all such tests measure an identical property, water vapor resistance, bu…
The essential oil of Bupleurum fruticescens was investigated qualitatively and quantitatively by GC and GC-MS analyses. The anti-inflammatory activity of the whole essential oil and its major components was also investigated in the rat hindpaw edema model induced by carrageenin or by PGE1. The anti-inflammatory activi…
The demand for energy savings in buildings will increase in the coming years, as the world's attention is drawn towards environmental aspects and energy economizing. Windows which are able to dynamically control the sun radiation through‐put will play an important role. In this respect we have studied two different el…
We report self-consistent, all-electron, local-spin-density calculations of energy bands of iron and cobalt pyrites (${\mathrm{FeS}}_{2}$ and ${\mathrm{CoS}}_{2}$). We find ${\mathrm{FeS}}_{2}$ to be a moderately small-band-gap semiconductor and ${\mathrm{CoS}}_{2}$ to be an almost half-metallic ferromagnet. The predi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTX-ray photoelectron spectroscopic studies on organic photoconductors: evaluation of atomic charges on chlorodiane blue and p-(diethylamino)benzaldehyde diphenylhydrazoneR. J. Waltman, J. Pacansky, and C. W. Bates, Jr.Cite this: Chem. Mater. 1993, 5, 12, 1799–1804Publication…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA weak antiferromagnetic interaction between manganese(2+) centers through a TCNQ column: crystal structures and magnetic properties of [MnII(tpa)(TCNQ)(CH3OH)](TCNQ)2.cntdot.CH3CN, [MnII(tpa)(.mu.-O2CCH3)]2(TCNQ)2.cntdot.2CH3CN, and [MnII(tpa)(NCS)2].cntdot.CH3CN (tpa = tri…