Searched for: subject%3A%22Particle%255C%2Bsize%255C%2Banalysis%22
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Durán Jiménez, D. (author), de Bruin-Hoegee, J.M. (author), Alkema, D.P.W. (author), Noort, D. (author), Busker, R.W. (author), van Wuijckhuijse, A.L. (author)
conference paper 2022
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van Groenestijn, G.J.A. (author), Meulendiiks, N.M.M. (author), Volker, A.W.F. (author), van Neer, P.L.M.J. (author), Buskens, P.J.P. (author)
Nanoparticles are applied in an increasing number of products (e.g. medicine, food and cosmetics). There is a need to real-time monitor the growth of nanoparticles during production inside the chemical reactor. However, standard particle sizing methods such as dynamic light scattering (DLS) and transmission electron microscopy (TEM) cannot do...
conference paper 2018
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Fransman, W. (author), Bekker, C. (author), Tromp, P. (author), Duis, W.B. (author)
Increasing production and applications of manufactured nano objects (MNOs) have become a source for human exposure and therefore raise concerns and questions about the possible health effects. In this study, the potential release of nano objects, their agglomerates, and aggregates (NOAA) as a result of sanding of hardwood treated with MNOs...
article 2016
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Carton, E.P. (author), Roebroeks, G.H.J.J. (author), Weerheijm, J. (author), Diederen, A.M. (author), Kwint, M.E. (author)
Several specially designed experimental techniques including an alternative test method have been developed for the evaluation of ceramic based armor. Armor grade ceramics and a range of combined materials have been tested using 7.62 AP rounds. Using the energy method [12] the dwell-time and total energy absorbed from the AP core were determined...
conference paper 2016
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Bekker, C. (author), Kuijpers, E. (author), Brouwer, D.H. (author), Vermeulen, R. (author), Fransman, W. (author)
article 2015
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Hulsbosch-Dam, C.E.C. (author), Spruijt, M.P.N. (author), Necci, A. (author), Cozzani, V. (author)
A model was developed to calculate the particle size distribution following the release of pressurised supercritical CO 2. The model combines several sub-models for the different stages of jet break-up and specifically addresses the possible formation of solid particles, which is important for CO 2 releases. The model was validated using...
article 2012
document
Beurskens-Comuth, P.A.W.V. (author), Verbist, K. (author), Brouwer, D. (author), TNO Kwaliteit van Leven (author)
Objectives: There is a growing awareness of the potential risks for human health of exposure to ultrafine particles or nanoparticles. In that context, workplace air measurements become important, and various strategies have been developed to monitor exposure. In addition, observations and time/activity registrations are part of the exposure...
article 2011
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Volkov, V.V. (author), Lebedeva, V.I. (author), Petrova, I.V. (author), Bobyl, A.V. (author), Konnikov, S.G. (author), Roldughin, V.I. (author), van Erkel, J. (author), Tereshchenko, G.F. (author)
Principal approaches for the preparation of catalytic membrane reactors based on polymer membranes containing palladium nanoparticles and for the description of their characteristics are presented. The method for the development of adlayers composed of palladium nanoparticles and their aggregates on the surface of hydrophobic polypropylene...
article 2011
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de Jong, A.N. (author), van Eijk, A.M.J. (author), Fritz, P.J. (author), Cohen, L.H. (author), Moerman, M.M. (author), TNO Defensie en Veiligheid (author)
The knowledge of the atmospheric aerosol characteristics is of great importance for the range performance of Infrared and Electro-Optical sensor systems. The composition, the concentration and the size distribution of aerosols determine their scattering behavior as function of wavelength and thus their attenuation of light beams. When studies...
conference paper 2007
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TNO Defensie en Veiligheid (author), Kuśmierczyk-Michulec, J.T. (author), van Eijk, A.M.J. (author)
The variation of the extinction coefficient with wavelength can be presented as a power law function with a constant (related to the power factor) known as the Ångström coefficient. When the particle size distribution is dominated by small particles, usually associated with pollution, the Ångström coefficients are high; in clear conditions they...
conference paper 2007
document
TNO Defensie en Veiligheid (author), de Jong, A.N. (author), van Eijk, A.M.J. (author), Moerman, M.M. (author), Cohen, L.H. (author)
The presence of atmospheric aerosols along the line of sight of infrared and electro-optical sensors greatly determines the range performance of these devices. On the one hand the aerosol particles scatter background (including sun) radiance into the field of view of the sensor, on the other hand they contribute to the atmospheric contrast...
conference paper 2006
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TNO Defensie en Veiligheid (author), Reid, J.S. (author), Brooks, B. (author), Crahan, K.K. (author), de Leeuw, G. (author), Reid, E.A. (author), Anderson, F.D. (author), Hegg, D.A. (author), Eck, T.F. (author), O'Neill, N. (author)
In August/September of 2001, the R/P FLIP and CIRPAS Twin Otter research aircraft were deployed to the eastern coast of Oahu, Hawaii, as part of the Rough Evaporation Duct (RED) experiment. Goals included the study of the air/sea exchange, turbulence, and sea-salt aerosol particle characteristics at the subtropical marine Pacific site. Here we...
article 2006
document
TNO Defensie en Veiligheid (author), Kusmierczyk-Michulec, J.T. (author), van Eijk, A.M.J. (author)
The results of applying the empirical orthogonal functions (EOF) method to decomposition and approximation of aerosol size distributions are presented. A comparison was made for two aerosol data sets, representing coastal and oceanic environments. The first data set includes measurements collected at the Irish Atlantic coast in 1994 and 1995,...
conference paper 2006
document
TNO Defensie en Veiligheid (author), de Jong, A.N. (author), Fritz, P.J. (author)
The atmospheric conditions in the Persian Gulf region are significantly different from other places in the world. The particle size distribution may vary daily and during the day. The aerosols can contribute to the amount of rainfall over land, important for the nations around the Gulf. In 2004 NASA/GSFC and NRL (Naval Research Laboratory)...
conference paper 2005
document
de Jong, A.N. (author), Cohen, L.H. (author), Moerman, M.M. (author)
Scattering by atmospheric aerosols is one of the environmental parameters determining the range performance of optical and infrared sensors. Extinction of the target contrast along the path due to scattering is difficult to estimate in real operational conditions due to uncertainties in the size distribution of the particles, their constitution...
conference paper 2004
document
TNO Fysisch en Elektronisch Laboratorium (author), Piazzola, J. (author), Kaloshin, G. (author), de Leeuw, G. (author), van Eijk, A.M.J. (author)
The performance of electro-optical systems can be substantially affected by aerosol particles that scatter and absorb electromagnetic radiation. A few years ago, an empirical model was developed describing the aerosol size distributions in the Mediterranean coastal atmosphere near Toulon (France). This model has been coupled with Mie theory to...
conference paper 2004
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van Wuijckhuijse, A.L. (author), Stowers, M.A. (author), Kientz, Ch.E. (author), Marijnissen, J.C.M. (author), Scarlett, B. (author)
In previous publications the use of an aerosol time of flight mass spectrometer was reported for the on-line measurements of aerosols (Weiss 1997, Kievit 1995). The apparatus is capable of measuring the size as well as the chemical composition, by the use of Laser Desorption/Ionisation (LDI), of an aerosol particle. A drawback of LDI principle...
article 2000
document
O'Dowd, C.D. (author), Becker, E. (author), Hoell, C. (author), Mäkela, J.M. (author), Kulmala, M. (author), Hämeri, K. (author), Väkevä, M. (author), Pirjola, L. (author), Aalto, P. (author), Hansson, H-C. (author), Strom, J. (author), Jennings, S.G. (author), Geever, M. (author), de Leeuw, G. (author), Kunz, G.J. (author), Berresheim, H. (author), Hewitt, C.N. (author), Sartin, J. (author), Harrison, R.M. (author), Allen, A.G. (author), Viisanen, Y. (author), Korhonen, P. (author), Rapsomanikis, S. (author), Hoffman, T. (author), TNO Fysisch en Elektronisch Laboratorium (author)
article 2000
document
Janssen, L.H.J.M. (author), Buringh, E. (author), van der Meulen, A. (author), van den Hout, K.D. (author), Instituut voor Milieu- en Energietechnologie TNO (author)
Eight rules based on measurements, model calculations, additional deductions and expert judgement have been devised for use in estimating the distribution and sources of various fractions of PM10 in the Netherlands. As some of the underlying assumptions to these rules are debatable, they can be best characterized as 'rules of thumb'. A brief...
article 1999
document
de Leeuw, G. (author), Cohen, L. (author), Kunz, G.J. (author), Moerman, M. (author), Geernaert, G. (author), Hertel, O. (author), Jensen, B. (author), Pedersen, B. (author), Vignati, E. (author), Sorensen, L.L. (author), Lund, S. (author), Jickells, T. (author), Spokes, L. (author), Schlunzen, H. (author), TNO Fysisch en Elektronisch Laboratorium (author)
The Atmospheric Nitrogen Inputs into the Costal Ecosystem (ANICE) project was initiated to improve the accuracy and performance of model tools used to estimate the atmospheric nitrogen deposition to the sea. The experimental work includes the use of a ferry for long-term measurements of gaseous species, aerosols and rain water during one year,...
article 1999
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