Results 281 to 290 of about 2,782,844 (314)

Dispersion of nanoparticles in media of biological interest

MRS Proceedings, 2011
ABSTRACTNanoparticles (NP) are introduced in a growing number of commercial products, including food and beverage, daily use hygiene products such as toothpaste, or orally-administered drugs. To study the possible toxicity of these nanoparticles, a model system is the in vitro response of eukaryotic cells to the presence of NP.
Carriere, M., Casanova, A., Herlin-Boime, Nathalie   +2 more
openaire   +2 more sources

Dispersion modelling for biological threat [PDF]

2015 12th International Bhurban Conference on Applied Sciences and Technology (IBCAST), 2015
Accidental release scenario related to chemical can be simulated through different software application available in market. CHARM ® is one of the software applications which handle movement of airborne particles in complex terrain. The aim of this paper is to explain how dispersion for Biological threat can be achieved by using same software package ...
openaire   +1 more source

Biological response to dissolved versus dispersed oil

Marine Pollution Bulletin, 2020
The water-soluble compounds of oil (e.g. low molecular weight PAHs) dissolve as a function of their physicochemical properties and environmental conditions, while the non-soluble compounds exist as dispersed droplets. Both the chemical and physical form of oil will affect the biological response.
Gerardo Gold, Jose L. Sericano, Terry L. Wade, Anthony H. Knap, Shawn M. Doyle, Jason B. Sylvan, Manoj Kamalanathan, Antonietta Quigg, Gopal Bera, Uta Passow   +9 more
openaire   +3 more sources

Gold nanoparticles: dispersibility in biological media and cell-biological effect

Journal of Materials Chemistry, 2010
Spherical gold nanoparticles with a hydrodynamic diameter between 25 and 37 nm were prepared and stabilised with poly(N-vinylpyrrolidone) (PVP) or tris(sodium-m-sulfonatophenyl)phosphine (TPPTS). They were subjected to different cell culture media, e.g.
Mahl, Dirk, Greulich, Christina, Meyer-Zaika, Wolfgang, Köller, Manfred, Epple, Matthias   +4 more
openaire   +2 more sources

Biological and Ecological Effects of Dispersants

1989
In the marine environment, commercial dispersants have been employed as part of the clean-up strategy following major oil spills since the late 1960’s and the Torrey Canyon disaster. However, considerable controversy has surrounded the use of these surfactant (“surface active agent”) formulations under such circumstances.
M. W. Trett, B. Frankland, D. H. Khan, S. Shales, B. A. Thake, J. D. Hutchinson, C. F. Mason   +6 more
openaire   +2 more sources

Resource‐Dependent Dispersal and the Speed of Biological Invasions

The American Naturalist, 2006
Many mobile organisms exhibit resource-dependent movement in which movement rates adjust to changes in local resource densities through changes in either the probability of moving or the distance moved. Such changes may have important consequences for invasions because reductions in resources behind an invasion front may cause higher dispersal while ...
Greg Dwyer, William F. Morris
openaire   +3 more sources

Effect of Biological and Chemical Dispersants on Oil Spills

Petroleum Science and Technology, 2005
Abstract The aim of this work is to study the effect of different types of chemical and biological dispersants used for crude oil spill treatment. The dispersing efficiency of the different dispersants on the crude oil was determined for selecting the most effective one.
S. Z. Mohamed, R. I. Abdallah, F. M. Ahmed   +2 more
openaire   +2 more sources

Absorption and dispersion of ultrasound in biological tissue

Ultrasound in Medicine & Biology, 1975
Abstract Absorption of ultrasound is the process of conversion of vibrational energy into heat. In biological soft tissues, the absorption coefficients are roughly proportional to the frequency; typically α = 1 dB cm −1 MHz −1 . The velocities in soft tissues are similar, being about 1,500 msec − .
openaire   +2 more sources

How river structure and biological traits influence gene flow: a population genetic study of two stream invertebrates with differing dispersal abilities

, 2012
Summary 1. Determined by landscape structure as well as dispersal-related traits of species, connectivity influences various key aspects of population biology, ranging from population persistence to genetic structure and diversity.
M. Alp, I. Keller, A. Westram, C. Robinson   +3 more
semanticscholar   +1 more source

Preparation of Boron Nitride Nanotubes Aqueous Dispersions for Biological Applications

Journal of Nanoscience and Nanotechnology, 2008
While in the last years applications of carbon nanotubes in the field of biotechnology have been largely proposed, biomedical applications of boron nitride nanotubes (BNNTs) are yet totally unexplored. BNNTs have very interesting physical properties that should be exploited in the biomedical field.
Ciofani G, RAFFA, VITTORIA, MENCIASSI, ARIANNA, DARIO, PAOLO   +3 more
openaire   +6 more sources