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Displaying records 321 to 330 of 401 records.
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321. ON LINE MONITORING SYSTEM - AN APPLICATION FOR MONITORING KEY WELDING PARAMETERS OF DIFFERENT WELDING PROCESSES
Topic: Materials Science
Published: 11/16/2007
Authors: Thomas Allen Siewert, Ivan Samard¿i¿,, Zvonimir Kolumbi
Abstract: This paper describes the application of an on-line monitoring system for the monitoring, aquisition and processing of key welding parameters. The on-line monitoring system has been successfully applied in practice to measure key welding parameters fo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50624

322. Chemical Bonding and Many-Body Effects in Site-Specific X-ray Photoelectron Spectra of Corundum V2O3
Topic: Materials Science
Published: 10/1/2007
Authors: Joseph C Woicik, M Yekutiel, E J. Nelson, N Jacobson, P Pfalzer, L Kronik
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854384

323. Raman Spectroscopy of n-Type and p-Type GaSb with Multiple Excitation Wavelengths
Topic: Materials Science
Published: 10/1/2007
Authors: James E Maslar, Wilbur Scott Hurst, C Wang
Abstract: The interpretation of Raman spectra of GaSb can be complicated by the presence of a so-called surface space-charge region (SSCR), resulting in an inhomogeneous near-surface Raman scattering environment. To fully interpret Raman spectra, it is i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902678

324. Tunable Ionic-Conductivity of Collapsed Sandia Octahedral Molecular Sieves (SOMS)
Topic: Materials Science
Published: 9/12/2007
Authors: Jason D Pless, Terry J Garino, James E Maslar, Tina M Nenoff
Abstract: The structure-property relationship between atomic cation substitution and bulk scale conductivity in perovskites has been studied systematically. A series of Na-Nb perovskites has been synthesized via two methods (1) ion-exchange or (2) synthetic me ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830985

325. Benefit-Cost Analysis of Residential Fire Sprinkler Systems
Series: NIST Interagency/Internal Report (NISTIR)
Topic: Materials Science
Published: 9/2/2007
Authors: David T Butry, M H. Brown, S Fuller
Abstract: This report documents a benefit-cost analysis performed to measure the expected present value of net benefits resulting from the installation of a multipurpose network fire sprinkler system in a newly-constructed, single-family house. The benefits an ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860105

326. Effects of Solution pH and Surface Chemistry on the Post-deposition Growth of Chemical Bath Deposited PbSe Nanocrystalline
Topic: Materials Science
Published: 9/1/2007
Authors: Shaibai K Sarkar, Shifi Kababya, Shimon Vega, Hagal Cohen, Joseph C Woicik, A I Frenkel, Gary Hodes
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854229

327. Analysis of Welding Parameter Distribution in Stud Arc Welding
Topic: Materials Science
Published: 7/15/2007
Authors: Ivan Samardzic, Stefanija Klaric, Thomas Allen Siewert
Abstract: This paper describes the application of on-line monitoring system for recording welding current and voltage during stud arc welding with a ceramic ferrule. Recorded values of welding current and voltage are analyzed off-line for the weld process wi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50536

328. Tuning Polymer Melt Fragility With Antiplasticizer Additives
Topic: Materials Science
Published: 6/19/2007
Authors: Robert A Riggleman, Jack F Douglas, J J de Pablo
Abstract: A polymer-diluent model exhibiting antiplasticization has beendeveloped and characterized by molecular dynamics simulations. Antiplasticizer molecules are shown to decrease the glass transition temperature Tg, but to increase the elastic moduli o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852717

329. The Recovery of Elastic Properties at 35 C in Trip 700 Steel Following Deformation
Topic: Materials Science
Published: 6/1/2007
Authors: David J Pitchure, Richard E Ricker
Abstract: The influence of plastic deformation on the elastic properties that determine the magnitude of springback following forming was investigated using dynamic modulus analysis. For this study, the elastic modulus of TRIP 700 steel was measured continuou ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853488

330. Fracture Toughness through a Welded Pipeline Section - Crack Tip Opening Angle Criterion
Topic: Materials Science
Published: 4/23/2007
Authors: Philippe P. Darcis, Christopher N McCowan, Elizabeth S Drexler, Joseph David McColskey, Avigdor Shtechman, Thomas Allen Siewert
Abstract: The increasing demand for natural gas as an alternative energy source implies continued growth of gas pipeline installations. This trend compels the natural gas transmission industry to consider the construction of larger-diameter, higher-pressure pi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50531



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