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Displaying 1826 - 1850 of 2522

Certification of Three NIST Renewal Soil Standard Reference Materials(R) for Element Content: SRM 2709a San Joaquin Soil, SRM 2710a Montana Soil I, and SRM 2711a Montana Soil II

June 1, 2010
Author(s)
Elizabeth A. Mackey, Christopher S. Johnson, Richard M. Lindstrom, Stephen E. Long, Anthony F. Marlow, Karen E. Murphy, Rick L. Paul, Rachel S. Popelka-Filcoff, Savelas A. Rabb, John R. Sieber, Rabia Oflaz, Bryan E. Tomlin, Laura J. Wood, James H. Yen, Lee L. Yu, Rolf L. Zeisler, S. A. Wilson, M. G. Adams, Z. A. Brown, P. L. Lamothe, J. E. Taggart, C. Jones, J. Nebelsick
… For the past 20 y, the National Institute of Standards and Technology has …

Novel CaF2 Nanocomposite with High Strength and F Ion Release

May 3, 2010
Author(s)
Hockin D. Xu, Jennifer L. Moreau, Limin Sun, Laurence Chow
Secondary caries and restoration fracture remain the two most common problems. The objectives of this study were to develop stress-bearing, fluoride-releasing nanocomposites. Novel CaF2 nanoparticles (56-nm) were synthesized via spray-drying and

Automated Mapping of Explosives Particles in Composition C-4 Fingerprints

March 1, 2010
Author(s)
Jennifer R. Verkouteren, Jessica L. Staymates, Inho Cho
A method is described to perform automated mapping of RDX particles in C-4 fingerprints. The method employs polarized light microscopy and image analysis to map the entire fingerprint and the distribution of RDX particles. The approach is relatively quick

Photo-Assisted Tuning of Si Nano-Crystal Photoluminescence

February 2, 2007
Author(s)
Jonghoon Choi, Nam S. Wang, Vytas Reipa
Silicon is rather inefficient light emitter due to the indirect-band gap electronic structure, requiring a phonon to balance electron momentum during interband transition. Fortunately, momentum requirements are relaxed in 1-5 nm dia Si crystals as a result

LEAD-FREE SOLDER DATA: COLLECTION AND DEVELOPMENT

January 10, 2005
Author(s)
Thomas A. Siewert, David R. Smith, Yi-Wen Cheng, Juan C. Madeni, S X. Liu
… circuit board) were subjected to thermal aging tests for 20, 100, 200, and 500 hours at 70, 100, and 150 oC. The …
Displaying 1826 - 1850 of 2522
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