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Topic Area: Nanotech/Environment, Health
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Displaying records 21 to 30 of 50 records.
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21. Protective roles of single-wall carbon nanotubes in ultrasonication-induced DNA base damage
Topic: Nanotech/Environment, Health & Safety
Published: 8/27/2012
Authors: Elijah J Petersen, Xiaomin X. Tu, M Miral Dizdar, Ming Zheng, Bryant C Nelson
Abstract: Ultrasonication is a physical process known to generate abundant levels of oxygen-derived species such as hydroxyl radicals, hydrogen atoms, and hydrogen peroxide. Highly reactive hydroxyl radicals can react with DNA to generate strand breaks and a m ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911310

22. Effects of chlorine and other water quality parameters on the release of silver nanoparticles from a ceramic surface
Topic: Nanotech/Environment, Health & Safety
Published: 8/11/2012
Authors: Michael W Stewart, Angela Bielefeldt, Elisabeth Mansfield, R. Scott Summers, Joseph N Ryan
Abstract: A quartz crystal microbalance was used to determine the effects of different water quality parameters on the desorption of silver nanoparticles from surfaces representative of ceramic water filters (CWFs). Silver nanoparticles stabilized with 25-30% ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911517

23. Summary Report of Research on TiO2 Nanomaterial
Topic: Nanotech/Environment, Health & Safety
Published: 8/3/2012
Author: Vincent A Hackley
Abstract: Report summarizes study whose purpose was to optimize and validate a standardized and reproducible approach for the preparation of TiO2 nanoparticle dispersions in relevant biological and environmental test media, using an industrially relevant powde ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912219

24. Photo-induced Surface Transformation of Silica Nanocomposites
Topic: Nanotech/Environment, Health & Safety
Published: 6/22/2012
Authors: Justin M Gorham, Tinh Nguyen, Coralie Bernard, Deborah L Stanley, Richard D Holbrook
Abstract: The physicochemical, UV-induced surface modifications to silica nanoparticle (SiNP) - epoxy composites have been investigated. The silica nanocomposites (SiNCs) were prepared using a two-part epoxy system with 10 % mass fraction of SiNPs and expose ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910637

25. Uptake and Elimination Behaviors of Polyethyleneimine (PEI)-Coated Multi-Walled Carbon Nanotubes by Eisenia foetida and Daphnia magna
Topic: Nanotech/Environment, Health & Safety
Published: 6/20/2012
Author: Elijah J Petersen
Abstract: Determining the effects of various surface coatings on carbon nanotubes (CNTs) is critical given the numerous expected applications of CNTs and their inevitable release into ecosystems. To explore the potential ecotoxicological effects of CNT surface ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911108

26. CEINT/NIST PROTOCOL for the PREPARATION OF NANOSCALE TiO2 DISPERSIONS IN AN ENVIRONMENTAL MATRIX FOR ECO-TOXICOLOGICAL ASSESSMENT
Topic: Nanotech/Environment, Health & Safety
Published: 2/2/2012
Authors: Julian S. Taurozzi, Vincent A Hackley, Mark R Wiesner
Abstract: Toxicity and fate assessment are key elements in the evaluation of the environmental, health and safety risks of engineered nanomaterials (ENMs). While significant effort and resources have been devoted to the toxicological evaluation of many ENMs, i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910395

27. Anisotropic surface-state-mediated RKKY interaction between adatoms
Topic: Nanotech/Environment, Health & Safety
Published: 1/18/2012
Authors: Paul N. Patrone, T L Einstein
Abstract: Motivated by recent numerical studies of Ag on Pt(111), we derive a far-field expression for the RKKY interaction mediated by surface states on a (111) FCC surface. The main contribution to the interaction comes from electrons whose Fermi velocity ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909398

28. Does Shape Matter? Bioeffects of Gold Nanomaterials in a Human Skin Cell Model
Topic: Nanotech/Environment, Health & Safety
Published: 1/13/2012
Authors: Nicole M Schaeublin, Laura K Braydich-Stolle, Elizabeth I Maurer, Kyoungweon Park, Robert I. MacCuspie, A R M Nabiul Afrooz, Navid B Saleh, R.A. Vaia, Saber Hussain
Abstract: Gold nanomaterials (AuNMs) have distinctive electronic and optical properties, making them ideal candidates for biological, medical, and defense applications. Therefore, it is imperative to evaluate the potential biological impact of AuNMs before em ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909150

29. Ecotoxicity of Fullerenes and Carbon Nanotubes: A Critical Review of Evidence for Nano-Size Effects
Topic: Nanotech/Environment, Health & Safety
Published: 10/18/2011
Authors: Elijah J Petersen, Theodore B Henry
Abstract: The promise of nanotechnology is virtually unlimited with expected future applications in almost every field and widespread commercial products utilizing nanoparticles for enhanced capabilities. One important topic has been the extent to which the u ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905985

30. Impact of Porous Media Grain Size on the Transport of Multiwalled Carbon Nanotubes
Topic: Nanotech/Environment, Health & Safety
Published: 9/28/2011
Authors: Nikolai Mattison, Denis O'Carroll, R. Kerry Rowe, Elijah J Petersen
Abstract: Nanomaterials possess unique physical, electrical and chemical properties which make them attractive for use in a wide range of applications. Through their use and eventual disposal, nanomaterials may ultimately be released into the subsurface enviro ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907834



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