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Topic Area: Materials Science
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Displaying records 321 to 330 of 542 records.
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321. Ground Truth Data Using 3D Imaging for Urban Search and Rescue Robots
Topic: Materials Science
Published: 10/14/2009
Authors: Nicholas A. Scott, Alan M. (Alan M.) Lytle
Abstract: The National Institute of Standards and Technology (NIST) is leading an effort to develop performance standards for ur- ban search and rescue robots (US&R). An important com- ponent of developing performance standards for these robots is capturing ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903811

322. Mathematical Metrology for Evaluating a 6DOF Visual Servoing System
Topic: Materials Science
Published: 10/8/2009
Authors: Tommy Chang, Tsai Hong Hong, Milli Shah, Roger D Eastman
Abstract: In this paper we develop the best homogeneous matrix trans- formation to fit two streams of dynamic six-degree-of-freedom (6DOF) data for evaluating perception systems using ground truth. In particular, we compare object position and orien- tation re ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903632

323. A Combined Fit of Total Scattering and Extended X-ray Absorption Fine Structure Data for Local-Structure Determination in Crystalline Materials
Topic: Materials Science
Published: 10/5/2009
Authors: Igor Levin, Victor Lvovich Krayzman, Joseph C Woicik, Terrell A Vanderah, M. G. Tucker, Thomas Proffen
Abstract: Reverse Monte Carlo (RMC) refinements of local structure using a simultaneous fit of x-ray/neutron total scattering and EXAFS data were developed to incorporate an explicit treatment of both single- and multiple-scattering contributions to EXAFS. T ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902352

324. A Novel Method to Covalently Functionalize Carbon Nanotubes with Isocyanates
Topic: Materials Science
Published: 9/30/2009
Authors: Tinh Nguyen, Aline Granier, Kristen L Steffens, Hajin Lee, Naomi Eidelman, Jonathan W. Martin
Abstract: We have developed a novel method to covalently functionalize carbon nanotubes (CNTs) that carry free isocyanate (N=C=O) groups. NCO-functionalized CNTs (NCO-fCNTs) are very desirable, because the NCO group is highly reactive with hydrogen-active grou ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903766

325. Development of Soft Armor Conditioning Protocols for NIJ 0101.06: Analytical Results
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7627
Topic: Materials Science
Published: 9/24/2009
Authors: Amanda Lattam Forster, Kirk D Rice, Michael A Riley, Guillaume Messin, Sylvain H. Petit, Cyril Clerici, Gale Antrus Holmes, Joannie W Chin
Abstract: This publication details the four major phases of analytical development work, coupled with several additional side studies, undertaken by the Office of Law Enforcement Standards in writing the Flexible Armor Conditioning Protocol in NIJ 0101.06. Th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902601

326. A Coherent Approach for Interrogating Polybenzoxazole Fibers for Residual Phosphoric Acid
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7573
Topic: Materials Science
Published: 9/17/2009
Authors: Gale Antrus Holmes, Eun S. Park, Charles Martin Guttman, Kathleen M. Flynn, John R Sieber, Stephanie S Watson, Kirk D Rice
Abstract: Because of the premature failure of soft-body armor that contains the active fiber poly [(benzo-[1,2-d:5,4-d‰]-benzoxazole-2,6-diyl)-1,4-phenylene] (PBO), the Office of Law Enforcement Standards (OLES) at the National Institute of Standards and Techn ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902057

327. MORPHOLOGY AND FRACTURE OF ENAMEL
Topic: Materials Science
Published: 9/16/2009
Authors: Sang-Won Myoung, James J. Lee, Paul Constantino, Peter Lucas, Brian Ronald Lawn
Abstract: Teeth are remarkable biological structures, brittle but resilient. Here we examine the inter-relation between enamel morphology and crack resistance by sectioning human molar teeth after loading to fracture. The sections reveal that many cracks s ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901535

328. An electrical pulse-heated Kosky bar technique for high strain rate flow stress measurements of rapidly heated metals
Topic: Materials Science
Published: 9/13/2009
Authors: Steven P Mates, Stephen W Banovic, Richard L. Rhorer, Timothy J Burns, Eric Paul Whitenton, D Basak
Abstract: We have developed a unique electrical pulse-heated Kolsky Bar technique for measuring the flow stress of metals at heating rates of up to 6000 °C per second and strain rates up to 10^4 per second. Under these conditions, which are approaching those f ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901787

329. A Practical and Systematic Review of Weibull Statistics for Reporting Strengths of Dental Materials
Topic: Materials Science
Published: 9/11/2009
Authors: Janet Quinn, George David Quinn
Abstract: Objective: To review the history, theory and current applications of Weibull analysis sufficient to make informed decisions regarding practical use of the analysis in dental material strength testing. Data: References are made to examples in the eng ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901550

330. Condensed Matter Astrophysics A Prescription for Determining the Species-Specific Composition and Quantity of Interstellar Dust using X-rays
Topic: Materials Science
Published: 9/10/2009
Authors: Bruce D Ravel, Julia C. Lee, Jingen Xiang, Jeffrey Kortright, Kathryn Flanagan
Abstract: We present a new technique for determining the quantity and composition of dust in astrophysical environments using < 6 keV X-rays. We argue that high resolution X-ray spectra as enabled by the Chandra and XMM-Newton gratings should be considered ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903572



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