Searched for: author:"Cohen, L.H."
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van Binsbergen, S.A. (author), Grossmann, P. (author), Cohen, L.H. (author), van Eijk, A.M.J. (author), Stein, K.U. (author)
This paper compares in-situ and path-averaged measurements of the electro-optical transmission, with emphasis on aerosol effects. The in-situ sensors consisted of optical particle counters (OPC) and a visibility meter, the path-averaged data was provided by a 7-wavelength transmissometer (MSRT) and a scintillometer (BLS). Data was collected at a...
conference paper 2017
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van Binsbergen, S.A. (author), Grossmann, P. (author), February, F.J. (author), Cohen, L.H. (author), van Eijk, A.M.J. (author), Stein, K.U. (author)
This paper compares in-situ and path-averaged measurements of the electro-optical transmission, with emphasis on aerosol effects. The in-situ sensors consisted of optical particle counters (OPC), the path-averaged data was provided by a 7-wavelength transmissometer (MSRT) and scintillometers (BLS). Data were collected at two sites: a homogeneous...
conference paper 2017
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Vogelbacher, S. (author), van Eijk, A.M.J. (author), Sprung, D. (author), Cohen, L.H. (author), Sucher, E. (author), Stein, K. (author)
A transmission experiment has been performed over an optical path of 1.53 km at a rural test site in Meppen, Northwest Germany. Direct transmission measurements were made by a 7-wavelength transmissometer. Transmission was further estimated from the average voltage received by a BLS2000 scintillometer, and evaluated with Mie theory from in-situ...
conference paper 2016
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Eisele, C. (author), Seiffer, D.P. (author), Stein, K. (author), Sucher, E. (author), Gunter, W.H. (author), February, F. (author), Vrahimis, G. (author), Wainman, C. (author), Maritz, B. (author), Koago, M.S. (author), van Eijk, A.M.J. (author), van Iersel, M. (author), Cohen, L.H. (author), van Binsbergen, S.A. (author), Heemskerk, H.J.M.E. (author), Sternberg, A. (author), Schulte, H. (author), van Rheenen, A.D. (author), Brenthagen, E. (author), Thomassen, J.B. (author), Griffith, D. (author)
A long term field trial called FESTER (First European South African Transmission Experiment) has been conducted by an international collaboration of research organizations during the course of almost one year at False Bay, South Africa. Main objectives of the experiment are a better insight into atmospherical effects on propagation of optical...
conference paper 2016
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van Iersel, M. (author), Veerman, H.E.T. (author), Cohen, L.H. (author), Benoist, K.W. (author), van Binsbergen, S.A. (author), van Riggelen, F. (author), Peet, B.J.A. (author)
Most models that predict the infrared signature of an object are based on steady-state equilibrium conditions and do not model the dynamic nature of the real world. To gain more understanding of the dynamic infrared signatures of an object, several outdoor experiments were performed, using a CUBI and a small vessel as an object. Dynamic changes...
conference paper 2016
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van Eijk, A.M.J. (author), Gunter, W.H. (author), February, F.J. (author), Maritz, B. (author), Vrahimis, G. (author), Koago, M.S. (author), Wainman, C. (author), Eisele, C. (author), Seiffer, D. (author), Sucher, E. (author), Stein, K. (author), van Iersel, M. (author), Cohen, L.H. (author), van Binsbergen, S.A. (author), Heemskerk, H.J.M. (author), Sternberg, A. (author), Schulte, H. (author), van Rheenen, A.D. (author), Brenthagen, E. (author), Thomassen, J.B. (author), Griffith, D. (author)
An overview is given of the First European - South African Transmission ExpeRiment (FESTER), which took place in South Africa, over the False Bay area, centered around Simon's Town. The experiment lasted from April 2015 through February 2016 and involved continuous observations as well as periodic observations that took place during four...
conference paper 2016
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Sugimoto-Kawabata, K. (author), Shimada, H. (author), Sakai, K. (author), Suzuki, K. (author), Kelder, T. (author), Pieterman, E.J. (author), Cohen, L.H. (author), Havekes, L.M. (author), Princen, H.M. (author), van den Hoek, A.M. (author)
Bile acid sequestrants (BASs) are cholesterollowering drugs that also affect hyperglycemia. The mechanism by which BASs exert these and other metabolic effects beyond cholesterol lowering remains poorly understood. The present study aimed to investigate the effects of a BAS, colestilan, on body weight, energy expenditure, and glucose and lipid...
article 2013
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de Jong, A.N. (author), van Eijk, A.M.J. (author), Cohen, L.H. (author), Fritz, P.J. (author), Gunter, W.H. (author), Vrahimisb, G. (author), Faith, J. (author)
The FATMOSE trial (False Bay Atmospheric Experiment) is a continuation of the cooperative work between TNO and IMT on atmospheric propagation and point target detection and identification in a maritime environment (South Africa). The atmospheric transmission, being of major importance for target detection, was measured with the MSRT multiband...
conference paper 2011
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de Jong, A.N. (author), Kusmierczyk-Michulec, J.T. (author), Frits, P.F. (author), Cohen, L.H. (author), van Eijk, A.M.J. (author), van Iersel, M. (author)
public lecture 2009
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van den Heuvel, J.C. (author), van Putten, F.J.M. (author), Cohen, L.H. (author), Kemp, R.A.W. (author), Franssen, G.C. (author), TNO Defensie en Veiligheid (author)
Coastal surveillance and naval operations in the littoral both have to deal with the threat of small sea-surface targets. These targets have a low radar cross-section and a low velocity that makes them hard to detect by radar. Typical threats include jet skis, FIAC's, and speedboats. Previous lidar measurements at the coast of the Netherlands...
conference paper 2009
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Kusmierczyk-Michulec, J. (author), van Eijk, A.M.J. (author), Moerman, M.M. (author), Cohen, L.H. (author), de Jong, A.N. (author), Fritz, P. (author), TNO Defensie en Veiligheid (author)
Atmospheric aerosol particles affect the Earth's radiative balance both in the cloud-free and the cloudy atmosphere. The direct effect of aerosols is related with scattering and absorption of solar radiation, and as a consequence, reduction of the amount of radiation reaching the surface. The best parameter that quantifies this effect is the...
conference paper 2008
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TNO Defensie en Veiligheid (author), van den Heuvel, J.C. (author), Bekman, H.H.P.T. (author), van Putten, F.J.M. (author), Cohen, L.H. (author), Schleijpen, H.M.A. (author)
Coastal surveillance and naval operations in the littoral both have to deal with the threat of small sea-surface targets. These targets have a low radar cross-section and a low velocity that makes them hard to detect by radar. Typical threats include jet skis, FIAC’s, and speedboats. Lidar measurements at the coast of the Netherlands have shown...
conference paper 2008
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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), van den Heuvel, J.C. (author), Bekman, H.H.P.T. (author), van Putten, F.J.M. (author), Cohen, L.H. (author)
Naval operations in the littoral have to deal with threats at short range in cluttered environments with both neutral and hostile targets. On board naval vessels there is a need for fast identification, which is possible with a laser range profiler. Additionally, in a coast-surveillance scenario a laser range profiler can be used for...
conference paper 2007
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Kitayama, K. (author), Nakai, D. (author), Kono, K. (author), van der Hoop, A.G. (author), Kurata, H. (author), de Wit, E.C. (author), Cohen, L.H. (author), Inaba, T. (author), Kohama, T. (author), TNO Preventie en Gezondheid (author)
1-{7-[(1-(3,5-Diethoxyphenyl)-3-{[(3,5-difluorophenyl)(ethyl)amino]carbo nyl}-4-oxo-1,4-dihydroquinolin-7-yl)oxy]heptyl}-1-methylpiperidinium bromide, R-146224, is a potent, specific ileum apical sodium-dependent bile acid transporter (ASBT) inhibitor; concentrations required for 50% inhibition of [3H]taurocholate uptake in human ASBT-expressing...
article 2006
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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), de Jong, A.N. (author), van Eijk, A.M.J. (author), Moerman, M.M. (author), Cohen, L.H. (author)
In an earlier paper [1], data from our Multi-Band Radiometer Transmissometer (MSRT) were used to compare the ratio of extinction coefficients in different spectral bands during periods of changing visibility conditions. This ratio is an indication of the characteristics and origin (eg rural or maritime) of the haze- or fog particles, present in...
conference paper 2006
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TNO Defensie en Veiigheid (author), Kunz, G.J. (author), Bekman, H.H.P.T. (author), Benoist, K.W. (author), Cohen, L.H. (author), van den Heuvel, J.C. (author), Putten, F.J.M. (author)
Small maritime targets, e.g., periscope tubes, jet skies, swimmers and small boats, are potential threats for naval ships under many conditions, but are difficult to detect with current radar systems due to their limited radar cross section and the presence of sea clutter. On the other hand, applications of lidar systems have shown that the...
conference paper 2005
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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
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Leifer, I. (author), de Leeuw, G. (author), Kunz, G. (author), Cohen, L.H. (author)
Bubble sizing by optical means is very common, but requires calibration by non-optical means. This is particularly important since apparent bubble size increases with decreasing threshold intensity. A calibration experiment was conducted comparing the displaced water mass from captured bubbles with backlit optical bubble size. The results showed...
article 2003
Searched for: author:"Cohen, L.H."
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