Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTransformations of Quinic Acid. Asymmetric Synthesis and Absolute Configuration of Mycosporin I and Mycosporin-glyJames D. White, Janice H. Cammack, Kazuhiko Sakuma, Gordon W. Rewcastle, and Rexford K. WidenerCite this: J. Org. Chem. 1995, 60, 12, 3600–3611Publication Date (…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemical Metal-to-Oxo Migrations of Aryl and Alkyl LigandsSeth N. Brown and James M. MayerCite this: Organometallics 1995, 14, 6, 2951–2960Publication Date (Print):June 1, 1995Publication History Published online1 May 2002Published inissue 1 June 1995https://pubs.acs.or…
Transient test data and posttest measurements from recent in-pile overpower transient experiments are used for an in situ determination of metallic fuel thermal conductivity. For test pins that undergo melting but remain intact, a technique is described that relates fuel thermal conductivity to peak pin power during t…
Stress corrosion cracking (SCC) test specimens of Al-Li- Cu alloy that were subjected to fixed-displacement loading and exposed to aerated 35 wt% sodium chloride (NaCl) solution for 1 week failed < 24 h after removal into ambient atmospheres. Anodic dissolution-based mechanisms proposed previously for this phen…
Abstract Scanning electron microscopy has revealed the presence of spherical, lath and platy kaolinite in gels with Si/Al atomic ratio ranging from 1.84 to 0.76 that are hydrothermally treated under different temperature and time conditions. Hemispherical structures and excavated zones, at different stages of evolutio…
Measurement of the activation energy for electromigration in polycrystalline copper films under clean surface, ultra-high vacuum (<10su−10Torr) conditions has been carried out. An isothermal electrical resistance method was used and a value of 0.47 ± 0.03 eV was obtained. This result suggests that under clean surface…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHyperpolarizabilities of Organic Molecules: Ab Initio Time-Dependent Coupled Perturbed Hartree-Fock-Roothaan Studies of Basic Heterocyclic StructuresVijaya Keshari, Wijekoon M. K. P. Wijekoon, Paras N. Prasad, and Shashi P. KarnaCite this: J. Phys. Chem. 1995, 99, 22, 9045–9…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolution Conformations of Patellamides B and C, Cytotoxic Cyclic Hexapeptides from Marine Tunicate, Determined by NMR Spectroscopy and Molecular DynamicsToshimasa Ishida, Yasuko In, Fumiyoshi Shinozaki, Mitsunobu Doi, Daisuke Yamamoto, Yasumasa Hamada, Takayuki Shioiri, Miyo…
We made a high-efficiency ref lection grating by coating a nine-layer quarter-wave system of ZnS/Na(3)AlF(6) directly onto a surface-relief grating in photoresist. Eff iciencies of 70% and 84% were measured at the firstorder Littrow mount with the laser beam incident from the air side and from the substrate side, resp…
The bioenergetic response of the extremely thermoacidophilic archaeon Metallosphaera sedula to thermal and nutritional stresses was examined. Continuous cultures (pH 2.0, 70(deg)C, and dilution rate of 0.05 h(sup-1)) in which the levels of Casamino Acids and ferrous iron in growth media were reduced by a step change o…
Duplex stainless steels have become important competitors to austenitic stainless steels in many applications and a great deal of attention has focused on the welding aspects. The introduction of modern grades with improved properties and a competitive price level have increased their use in the offshore, petrochemica…
Adjuvants were evaluated to determine the effect on increasing spray droplet size and reducing the amount of spray dispensed in small driftable size particles when applying water and paraffinic oil at ultralow volume. Spray solutions were applied with an air-assist system at liquid flow rates of 28 and 56 ml/min and a…
Modified double-loop electrochemical potentiokinetic reactivation (DL-EPR) tests were applied to evaluate the degree of sensitization (DOS) for alloy 600 (UNS N06600) aged at 700°C. Results of the modified DL-EPR test were compared to intergranular stress corrosion cracking (IGSCC) susceptibilities determined in deaer…
Pyroelectric coefficients were measured from a series of natural tourmaline crystals between -170 and - 500 K to quantify the variation of the pyroelectric effect with chemical composition. The amount of Fe in tourmaline has a prominent influence on the pyroelectricity. Fe content linearly decreases the pyroelectric c…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and Characterization of Poly(thiophenes) Functionalized by Photochromic Spironaphthoxazine GroupsA. Yassar, C. Moustrou, H. Korri Youssoufi, A. Samat, R. Guglielmetti, and F. GarnierCite this: Macromolecules 1995, 28, 13, 4548–4553Publication Date (Print):June 1, 1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProcessing-Induced Changes in the Local Structure of Amorphous Polyaniline by Radial Distribution Function Analysis of X-ray Scattering DataJ. Maron, M. J. Winokur, and B. R. MattesCite this: Macromolecules 1995, 28, 13, 4475–4486Publication Date (Print):June 1, 1995Publicat…
This is the first of a two-part molecular dynamics (MD) study that examines the effects of temperature, pressure, and composition on the structure and properties of ten compositions in the system NaAISiO.-Si02. Results were obtained for collections of at least 1300 atoms at temperatures between 2500 and 4500 K, pressu…
Abstract Selective non‐catalytic reduction of nitric oxide (NO) using ammonia was studied with up to 15% (by volume) oxygen at 102 kPa. The experiments were conducted in an electrically heated laminar‐flow, quartz reactor using mixtures of N 2 , O 2 , NO, and CO to simulate exhaust gas. The base case condition include…
One approach to tissue-engineering combines isolated cells with polymer scaffolds for the purpose of generating new tissue or tissue equivalents. It has met with much success when applied to the formation of new cartilage (neo-cartilage). In this review, we will examine the development of polyglycolic acid fiber meshe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDipole Moments, Energetic Disorder, and Charge Transport in Molecularly Doped PolymersRalph H. Young, John A. Sinicropi, and John J. FitzgeraldCite this: J. Phys. Chem. 1995, 99, 23, 9497–9506Publication Date (Print):June 1, 1995Publication History Published online1 May 2002…