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Displaying records 11 to 20 of 50 records.
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11. 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 ...

12. Effects of Polyethyleneimine-Mediated Functionalization of Multi-Walled Carbon Nanotubes on Earthworm Bioaccumulation and Sorption by Soils
Topic: Nanotech/Environment, Health & Safety
Published: 3/24/2011
Authors: Elijah J Petersen, Roger A Pinto, Liwen Zheng, Qingguo Huang, Peter E Landrum, Walter J. Weber
Abstract: Carbon nanotubes (CNTs) are often modified for their different intended application potentials to enhance their aqueous stability or change properties such as their surface charge. Such changes may also profoundly impact their environmental behavior ...

13. 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% ...

Topic: Nanotech/Environment, Health & Safety
Published: 3/25/2013
Authors: Ronald G Dixson, Craig Dyer McGray, Boon Ping Ng, Ndubuisi George Orji, Jon C Geist
Abstract: The National Institute of Standards and Technology (NIST) has been developing methods and standards to enable the traceable calibration of critical dimension atomic force microscopy (CD AFM). This technique involves flared tips and two-dimensional s ...

15. First approaches to standard protocols and reference materials for the assessment of potential hazards associated with nanomaterials
Topic: Nanotech/Environment, Health & Safety
Published: 9/19/2009
Authors: Iseult Lynch, Hans Bouwmeester, Hans Marvin, Alan Casey, Gordon Chambers, Markus Berges, Martin Clift, Teresa Fernandes, Lise Fjellsbo, Lucienne Juillerat, Gert Roebben, Christoph Klein, Qinglan Wu, Vincent A Hackley, Jean-Pierre Kaiser, Wolfgang Kreyling, C. Michael Garner, Peter Hatto, Kenneth Dawson, Michael Riediker
Abstract: This report presents the outcome of the discussions of 60 experts in the field of safety assessment of manufactured NMs from academia, industry, government and non-profit organizations on some of the critical issues pertaining to the development of s ...

16. Functionalization-Dependent Induction of Cellular Survival Pathways by CdSe Quantum Dots in Primary Normal Human Bronchial Epithelial Cells
Topic: Nanotech/Environment, Health & Safety
Published: 9/5/2013
Authors: Amber Nagy, Jennifer A Hollingsworth, Bin Hu, Andrea Steinbruck, Peter C. Stark, Cristina Rios Valdez, Momchilo Vuyisich, Michael H. Stewart, Donald H Atha, Bryant C Nelson, Rashi Iyer
Abstract: Quantum dots (QDs) are semiconductor nanocrystals exhibiting unique optical properties which can be exploited for many practical applications ranging from photovoltaics to biomedical imaging and drug delivery. They are increasingly manufactured in la ...

17. Highly selective GaN-nanowire/TiO2-nanocluster hybrid sensors for detection of benzene and related environment pollutants
Topic: Nanotech/Environment, Health & Safety
Published: 6/15/2011
Author: Norman A Sanford
Abstract: Nanowire‹nanocluster hybrid chemical sensors were realized by functionalizing gallium nitride (GaN) nanowires (NWs) with titanium dioxide (TiO2) nanoclusters for selectively sensing benzene and other related aromatic compounds. Hybrid sensor device ...

18. Humic Acid-Mediated Silver Nanoparticle Formation Under Environmentally Relevant Conditions
Topic: Nanotech/Environment, Health & Safety
Published: 4/1/2011
Authors: Nelson Akaighe, Robert I. MacCuspie, Divina A Navarro, Diana S Aga, Sarbajit Banerjee, Mary Sohn, Virender K Sharma
Abstract: The formation of silver nanoparticles (AgNPs) via reduction of silver ions (Ag+) in the presence of humic acids (HAs) under various environmentally relevant conditions is described. HAs tested were from Suwannee River (SUW), and samples of three se ...

19. 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 ...

20. Influence of Polyethyleneimine Graftings of Multi-Walled Carbon Nanotubes on Their Accumulation and Elimination by and Toxicity to Daphnia magna
Topic: Nanotech/Environment, Health & Safety
Published: 12/23/2010
Authors: Elijah J Petersen, Roger A Pinto, Danielle J Mai, Peter E Landrum, Walter J. Weber
Abstract: Carbon nanotubes (CNTs) are often modified for different intended applications which often changes the nanotubes‰ physicochemical properties, such as surface charge. Assessing the extent to which such modifications to carbon nanotubes influence thei ...

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