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Displaying records 51 to 60 of 788 records.
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51. Hydrated phases and pore solution composition in cement-solidified saltstone waste forms
Topic: Chemistry
Published: 3/8/2013
Authors: Kenneth Alan Snyder, Paul E Stutzman, Jacob Philip, David W. Esh
Abstract: The mineral phases and pore solution composition of hydrated cement-solidified saltstone waste forms are quantified using thermogravimetric analysis, quantitative X-ray diffraction, and inductively-coupled plasma. The results suggest that, after 6 m ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912681

52. Towards Discrete Axial p-n Junction Nanowire LEDs Grown by Plasma-Assisted MBE
Topic: Chemistry
Published: 3/6/2013
Author: Matthew David Brubaker
Abstract: In this paper we investigate axial p-n junction GaN nanowires grown by plasma-assisted MBE, with particular attention to the effect of Mg doping on the device characteristics of individual nanowire LEDs. We observe that single-nanowire LEDs produce ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911884

53. Use of the Grand Canonical Transition-Matrix Monte Carlo Method to Model Gas Adsorption in Porous Materials
Topic: Chemistry
Published: 2/21/2013
Authors: Daniel W Siderius, Vincent K Shen
Abstract: We present grand canonical transition-matrix Monte Carlo (GC-TMMC) as an efficient method for simulating gas adsorption processes, with particular emphasis on subcritical gas adsorption in which capillary phase transitions are present. As in other a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912491

54. To Predict Vibrational Spectra, Are Anharmonic Calculations Worthwhile?
Topic: Chemistry
Published: 1/22/2013
Authors: Ruth Lafuente Jacobsen, Karl K Irikura, Russell D Johnson III, Raghu N Kacker
Abstract: Anharmonic calculations using vibrational perturbation theory are known to provide near-spectroscopic accuracy when combined with high-level ab initio potential energy functions. However, performance with economical, popular electronic structure meth ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911024

55. ELUCIDATING THE SURFACE COMPOSITION OF MECHANICALLY MODULATED COLLAGEN FIBRIL FILMS WITH TOF-SIMS
Topic: Chemistry
Published: 1/17/2013
Authors: Christopher R Anderton, Kiran Bhadriraju, Frank W DelRio, Anne L Plant
Abstract: The extracellular matrix (ECM) environment plays a critical role in organism development and disease. Consequently, developing complementary analytical techniques to study bioactive scaffolds can assist in understanding cell-ECM processes. We have ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910931

56. Weathering Patterns of Ignitable Liquids with the Advanced Distillation Curve Method
Series: Journal of Research (NIST JRES)
Report Number: 118.003
Topic: Chemistry
Published: 1/17/2013
Authors: Samuel Allen, Thomas J Bruno
Abstract: One can take advantage of the striking similarity of ignitable liquid vaporization (or weathering) patterns and the separation observed during distillation to predict the composition of residual compounds in fire debris. This is done with the ad ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907398

57. Gallium Nitride Nanowires for On-Chip Optical Interconnects on Ex-Situ Substrates
Topic: Chemistry
Published: 1/16/2013
Authors: Matthew David Brubaker, Paul Timothy Blanchard, John B Schlager, Aric Warner Sanders, Alexana Roshko, Shannon M.M. Duff, Jason Gray, Victor M. Bright, Norman A Sanford, Kristine A Bertness
Abstract: In this letter we report on the fabrication, device characteristics, and optical coupling of a two-nanowire device comprising light-emitting diode and photoconductive GaN nanowires. Axial p-n junction GaN nanowires were grown by molecular beam epita ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912280

58. Protective performance of environmentally stressed fabrics containing melamine fiber blends
Topic: Chemistry
Published: 1/12/2013
Authors: Shonali Nazare, Shaun M. Flynn, Rick D Davis, Joannie W Chin
Abstract: In this study, environmentally stressed OS fabrics containing melamine fiber blends were evaluated for thermal and mechanical properties that are critical to the protective performance of firefighter turnout gear. Environmental stress factors that a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911977

59. Characterizing Vaccinium berry Standard Reference Materials using NIST Mass Spectral Libraries
Topic: Chemistry
Published: 1/6/2013
Authors: Mark S Lowenthal, Nirina Rabe Andriamaharavo, Stephen E Stein, Karen W Phinney
Abstract: A gas chromatography-mass spectrometry-based (GC-MS) method was developed for qualitative characterization of metabolites found in Vaccinium-fruit (berry) dietary supplement Standard Reference Materials (SRMs). Definitive identifications are pro ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912593

60. NIST/NIH Vitamin D Metabolites Quality Assurance Program Report of Participant Results: Winter 2010 Compatibility Study (Exercise 1)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7890
Topic: Chemistry
Published: 12/21/2012
Authors: Mary Bedner, Katrice A Lippa
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911152



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