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Topic Area: Nanotech/Environment, Health
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Displaying records 31 to 40 of 47 records.
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31. 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

32. Preparation of Nanoscale TiO2 Dispersions in an Environmental Matrix for Eco-Toxicological Assessment
Series: Special Publication (NIST SP)
Report Number: 1200-5r1
Topic: Nanotech/Environment, Health & Safety
Published: 6/3/2013
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=913712

33. 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

34. Pulmonary and Cardiovascular Responses of Rats to Inhalation of Silver Nanoparticles
Topic: Nanotech/Environment, Health & Safety
Published: 8/14/2013
Authors: Jenny R Roberts, Walt McKinney, Hong Kan, Kristine Krajnak, David G Frazer, Treye Thomas, Stacey Waugh, Allison Kenyon, Robert I. MacCuspie, Vincent A Hackley, Vincent Castranova
Abstract: Rats were exposed by inhalation to filtered air or to a low (100 ug/m3 using a commercial antimicrobial product [20 mg/L silver]) or high (1000 ug/m3 using a suspension [200 mg/L silver] synthesized to have a similar size distribution) concentrat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912947

35. Report on an Interlaboratory Study for the Measurement of BET-Specific Surface Area using an Industrially Relevant TiO2 Nanopowder
Topic: Nanotech/Environment, Health & Safety
Published: 8/3/2011
Author: Vincent A Hackley
Abstract: This report summarizes the findings of an interlaboratory study (ILS) conducted in 2009-2010 under the auspices of the Versailles Project on Advanced Materials and Standards (VAMAS) Technical Working Area (TWA) 34 (Nanoparticle Populations). The stat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908638

36. Reporting Guidelines for the Preparation of Nanoparticle Dispersions from Dry Materials
Topic: Nanotech/Environment, Health & Safety
Published: 7/8/2010
Authors: Julian S. Taurozzi, Vincent A Hackley, Mark R. Wiesner
Abstract: This document provides general guidelines for reporting relevant conditions and critical parameters relating to the dispersion of nanoparticles in liquid media, including the application of ultrasonic energy or other mechanical dispersion methods (se ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905966

37. Standard Guide for Size Measurement of Nanoparticles Using Atomic Force Microscopy
Topic: Nanotech/Environment, Health & Safety
Published: 1/1/2013
Authors: Vincent A Hackley, Frank W DelRio
Abstract: The purpose of this document is to provide guidance on the quantitative application of atomic force microscopy (AFM)to determine the size of nanoparticles2 deposited in dry form on flat substrates using height (z-displacement) measurement. Unlike ele ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912221

38. Storage Wars: How citrate capped silver nanoparticle suspensions are affected by not-so-trivial decisions
Topic: Nanotech/Environment, Health & Safety
Published: 3/21/2014
Authors: Justin M Gorham, Anne B Rohlfing, Katrice A Lippa, Robert I. MacCuspie, Amy Hemmati, Richard D Holbrook
Abstract: A critical but often overlooked component of silver nanoparticle (AgNPs) suspensions involves their behavior following short- and long-term storage. The current study investigates the integrity of citrate-capped AgNP suspensions, nominally 20 nm in ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913638

39. 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

40. Surface Chemical Transformations of UV irradiated Silica-Epoxy Nanocomposites
Topic: Nanotech/Environment, Health & Safety
Published: 5/15/2013
Authors: Justin M Gorham, Tinh Nguyen, Deborah L Stanley, Coralie Bernard, Richard D Holbrook
Abstract: Silica nanoparticles (SiNPs) incorporated into a polymeric matrix, or silica nanocomposites (SiNCs), are used in a wide variety of commercially available products in numerous natural and artificial environments. Environmental factors, such as light, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913534



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