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Displaying records 351 to 360 of 512 records.
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351. Phase Equilibria and Dielectric Behavior in the CaO:Al^d2^O^d3^:Nb^d2^O^d5^ System
Topic: Materials Science
Published: 11/1/2000
Authors: Terrell A Vanderah, W Febo, Julia Y. Chan, Robert S. Roth, J. M. Loezos, L D. Rotter, Richard G. Geyer, B A Reisner, Dennis Brooke Minor
Abstract: Subsolidus phase equilibria in the CaO:Al2O3:Nb2O5 system at 1325 C in air have been determined. One ternary phase forms, Ca2AlNbO6, which exhibits a perovskite-related structure with 1:1 or NaCl-type ordering of Al3+ and Nb5+ on the B-sites. Inde ...

352. Phase Equilibria of BaO-R^d2^O^d3^-CuO^dz^ Systems (R=Y and Lanthanides) Under CO^d2^-Free Conditions
Topic: Materials Science
Published: 3/13/2007
Authors: Winnie K Wong-Ng, Z Yang, Lawrence P. Cook, Julia Frank, Mario Loung, Qingzhen Huang
Abstract: For applications of phase equilibria to the processing of second-generation high Tc superconductor-coated-conductors, phase diagrams constructed under carbonate-free conditions are needed. Subsolidus phase equilibria of BaO-R2O3-CuOz (R=Ho) have bee ...

353. Phase Formation and Properties in the Magnetic Dielectric System Bi2O 3:2CoO 1+x::Nb2 O5
Topic: Materials Science
Published: 12/4/2006
Authors: Terrell A Vanderah, T Siegrist, M W. Lufaso, C Yeager, Juan C Nino, S Yates

354. Phase Formation and Properties in the System Bi2O 3:2CoO 1+x:Nb2O5
Topic: Materials Science
Published: 9/13/2006
Authors: Terrell A Vanderah, T Siegrist, M W Lufaso, C Yeager, Juan C Nino, S Yates, Robert S. Roth
Abstract: Subsolidus phase relations have been determined for the Bi-Co-Nb-O system in air (750 C to 925 C). Ternary compound formation was limited to pyrochlore (A2B 2O 6O ), which formed a substantial solid solution region at Bi-deficient stoichiometries ...

355. Phase Formation, Crystal Chemistry, and Properties in the Magnetic Dielectric System Bi^d2^O^d3-^Fe^d2^O^d3-^Nb^d2^O^d5^
Topic: Materials Science
Published: 6/22/2006
Authors: M W Lufaso, Terrell A Vanderah, I M Pazos, Igor Levin, Juan C Nino, Virgil Provenzano, Peter K. Schenck, Robert S. Roth
Abstract: Subsolidus phase relations have been determined for the Bi2O3-Fe2O3-Nb2O5 system in air (900-1075 C). Three new ternary phases were observed Bi3Fe0.5Nb1.5O9 with an Aurivillius-type structure, and two phases with approximate stoichiometries Bi17Fe2 ...

356. Phase Relations, Crystal Chemistry, and Dielectric Properties in Sections of the La^d2^O^d3^-CaO-MgO-TiO^d2^ System
Topic: Materials Science
Published: 6/1/2004
Authors: Terrell A Vanderah, Val R Miller, Igor Levin, S M Bell, T Negas
Abstract: Subsolidus phase equilibria, crystal chemistry, and dielectric behavior were studied for the La^d2^O^d3^ MgO TiO^d2^ system and for the ternary sections LaMg^d1/2^Ti^d1/2^O^d3^ CaTiO^d3^ La^d2^O^d3^ and LaMg^d1/2^Ti^d1/2^O^d3^ CaTiO^d3^ 0.5La^d2/3^Ti ...

357. Phonons and Static Dielectric Constant in CaTiO^d3^ From First Principles
Topic: Materials Science
Published: 8/1/2000
Authors: Eric J Cockayne, Benjamin P Burton
Abstract: CaTiO^d3^ has a static dielectric constant that extrapolates to a value greater than 300 at zero temperature. We investigate the origin of this large dielectric response on a microscopic level, using first-principles plane-wave pseudopotential densi ...

358. Photoresist latent and developer images as probed by neutron reflectivity methods
Topic: Materials Science
Published: 9/16/2010
Authors: Vivek M Prabhu, Shuhui Kang, David Lloyd VanderHart, Eric K Lin, Wen-Li Wu
Abstract: Photoresist materials enable the fabrication of advanced integrated circuits with ever decreasing feature sizes. As next-generation light sources are developed, using extreme ultraviolet light of wavelength 13.5 nm, these highly-tuned formulations m ...

359. Physicochemical characterization and in vitro hemolysis evaluation of silver nanoparticles
Topic: Materials Science
Published: 6/7/2011
Authors: Vytautas Reipa, Jonghoon Choi, Nam Sun Wang, Victoria M. Hitchins, Peter L. Goering, Robert Malinauskas
Abstract: In anticipation of the increased use of various forms of silver as an antimicrobial agent in medical devices, the objective of this study was to evaluate the in vitro hemolytic potential of silver nanoparticles in dilute human blood, and to relate pa ...

360. Polymerization Stress Development in Dental Composites: Effect of Cavity Design Factor
Topic: Materials Science
Published: 3/13/2009
Authors: Joseph M Antonucci, Anthony Albert Giuseppetti, Justin N.R. O'Donnell, Gary Edward Schumacher, Drago Skrtic
Abstract: Objective: To assess the effect of the cavity design factor (C-factor) on polymerization stress development (PSD) in resin composites. Methods: An experimental resin (BT resin) was prepared, which contained 2,2-bis[p-(2 hydroxy-3 -methacryloxypropoxy ...

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