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You searched on: Topic Area: Nanotech/Environment, Health Safety

Displaying records 11 to 20 of 21 records.
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11. Determination of Moisture Content of Single-Wall Carbon Nanotubes
Topic: Nanotech/Environment, Health & Safety
Published: 10/17/2011
Authors: Rolf Louis Zeisler, Rabia Oflaz, Ralph E. Sturgeon, Rick L Paul, Brian E Lang, Jeffrey A Fagan, Joseph W Lam, Anthony Windust, P Grinberg, Benoit Simard, Christopher T. Kingston
Abstract: Several techniques were evaluated for the establishment of reliable water/moisture content of single-wall carbon nanotubes. Karl Fischer titration (KF) provides for a direct measure of the water content and was used for benchmarking against results ...

12. Measuring agglomerate size distribution and dependence of localized surface plasmon resonance absorbance on gold nanoparticle agglomerate size using analytical ultracentrifugation
Topic: Nanotech/Environment, Health & Safety
Published: 9/3/2011
Authors: Justin M Zook, Vinayak Rastogi, Robert I. MacCuspie, Athena M Keene, Jeffrey A Fagan
Abstract: Nanoparticles frequently agglomerate when dispersed into relevant biological and environmental media, with the resulting change to the effective size distribution dramatically affecting the potential nanotoxicity and the absorbance for biosensor ...

13. Exposure and Fire Hazard Assessment of Nanoparticles in Fire Safe Consumer Products: Interagency Agreement Final Report
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7805
Topic: Nanotech/Environment, Health & Safety
Published: 8/4/2011
Authors: Rick D Davis, Yeon Seok Kim, Richard H. Harris Jr., Marc R. Nyden, Nasir M. Uddin, Treye Thomas
Abstract: An innovative technology was evaluated to generate fire and health safe soft furnishings. Nanoparticle-based thin coatings on a polyurethane foam and nonwoven barrier fabric were applied using Layer-by-layer (Lbl) assembly. This is the first report ...

14. Measuring silver nanoparticle dissolution in complex biological and environmental matrices using UV-Visible absorbance
Topic: Nanotech/Environment, Health & Safety
Published: 8/2/2011
Authors: Justin M Zook, Stephen E Long, Danielle Cleveland, Carly Lay Geronimo, Robert I. MacCuspie
Abstract: Distinguishing the toxic effects of nanoparticles (NPs) themselves from the well-studied toxic effects of their ions is a critical but challenging measurement for nanotoxicity studies and regulation. This measurement is especially difficult for silv ...

15. Characterization of Nanoparticle Release from Polymer Nanocomposites Due to Fire
Topic: Nanotech/Environment, Health & Safety
Published: 7/6/2011
Authors: Nasir M. Uddin, Marc R. Nyden, Rick D Davis
Abstract: Engineered nanoparticles, such as carbon nanotubes (CNTs) and nanofibers (CNFs) are increasingly being used as fire retardants and performance additives in polymeric materials. However, because of their small size and ability to interact with biologi ...

16. Interlaboratory Reproducibility of Size and Surface Charge Measurements on Nanoparticles prior to Biological Impact Assessment
Topic: Nanotech/Environment, Health & Safety
Published: 6/3/2011
Authors: Gert Roebben, Sonia Ramirez-Garcia, Vincent A Hackley, Matthias Roesslein, Fred Klaessig, Vikram Kestens, Iseult Lynch, C. Michael Garner, Alan Rawle, Allison Elder, Vicky Colvin, Wolfgang Kreyling, Harald Krug, Zuzanna Lewicka, Scott McNeil, Andre Nel, Anil K. Patri, Peter Wick, Tian Xia, Guenther Oberdoerster, Kenneth Dawson
Abstract: The International Alliance for NanoEHS Harmonization (IANH) organises interlaboratory comparisons of methods relevant for a better understanding of the biological impacts of nano-objects, to highlight and remove sources of irreproducibility in existi ...

17. Predicting Microstructure Development During Casting of Drug Eluting Coatings
Topic: Nanotech/Environment, Health & Safety
Published: 9/19/2010
Authors: David M. Saylor, Jonathan E Guyer, Daniel Wheeler, James A Warren
Abstract: We have devised a novel diffuse interface formulation to model the development of chem- ical and physical inhomogeneities, i.e. microstructure, during the process of casting drug eluting coatings. These inhomogeneities, which depend on the ...

18. 3D elemental and structural analysis of biological specimens using electrons and ions
Topic: Nanotech/Environment, Health & Safety
Published: 8/26/2010
Author: Keana C K Scott
Abstract: We demonstrate the utility of focused ion beam scanning electron microscopy (FIB SEM) combined with energy dispersive x-ray spectrometry (EDS) for 3-dimensional (3D) morphological and elemental correlative analysis of sub-cellular features. Althoug ...

19. Separation and Metrology of Nanoparticles by Nanofluidic Size Exclusion
Topic: Nanotech/Environment, Health & Safety
Published: 8/11/2010
Authors: Samuel M Stavis, Jon C Geist, Michael Gaitan
Abstract: A nanofluidic approach to the separation and metrology of nanoparticles is demonstrated. Advantages of this approach include nanometer-scale resolution, nanometer-scale to submicrometer-scale range, mitigation of hydrodynamic and diffusional limitat ...

Topic: Nanotech/Environment, Health & Safety
Published: 6/9/2010
Authors: Julian S. Taurozzi, Vincent A Hackley, Mark Wiesner
Abstract: This protocol is generic in nature and intended to provide relevant guidelines for the preparation of nanoparticle dispersions in liquid media by the application of ultrasonic energy. It applies specifically to source engineered nanomaterials (ENM) o ...

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