Searched for:
(61 - 67 of 67)

Pages

document
De Jong, S. (author), Maddox, E. (author), Vollmuller, G.J. (author), Schuurbiers, C.A.H. (author), Van Swaaij, R.A.C.M.M. (author), Ubbels, W.J. (author), Hamann, R.J. (author)
The Delfi-C3 nanosatellite successor, Delfi-n3Xt, is currently under development at Delft University of Technology and scheduled for launch in the first half of 2010. This improved three-unit CubeSat platform allows novel technology qualification for future small satellites and innovative scientific research. The platform is improved by...
conference paper 2008
document
De Lange, G. (author), Jackson, B.D. (author), Jochemsen, M. (author), Laauwen, W.M. (author), De Jong, L. (author), Kroug, M. (author), Zijlstra, T. (author), Klapwijk, T.M. (author)
We describe the performance of the Band 3 and Band 4 Flight Model mixer units for Herschel/HIFI Instrument. These units are part of the Focal Plane Unit of HIFI. The band 3 and 4 mixer units cover the 800-960 GHz and 960-1120 GHz frequency range and have a 4-8 GHz IF frequency band. The sensitivities of the mixers within the HIFI setting are...
conference paper 2006
document
De Jong, T.P.R. (author)
In the Netherlands several billion tonnes of mineable coal remained after closure of all mines in 1974. Mining activities in Dutch Limburg were suspended relatively early in comparison to surrounding basins, of which only DSK’s Ruhr mines are still producing. In retrospective this saved the costs of uneconomic exploitation and limited further...
conference paper 2004
document
De Lange, G. (author), Jackson, B.D. (author), Eggens, M. (author), Golstein, H. (author), Jochemsen, M. (author), Laauwen, W.M. (author), De Jong, L. (author), Kikken, S. (author), Kroug, M. (author), Zijlstra, T. (author)
We describe the current status of the HIFI mixer units for Band 3 and Band 4. The mixer units cover the 800-960 GHz and 960-1120 GHz frequency range and have a 4-8 GHz IF frequency band. The major requirements and the design strategy are described. Functional tests of the magnet, the de-flux heater, IF-circuit, and the corrugated horn were...
conference paper 2004
document
De Jong, W. (author), Verhagen, H.J. (author), Olthof, J. (author)
Physical model tests were done on an armour of Tetrapods, placed in a single layer. The objective of the investigations was to study the stability of the secondary layer, and to see if the material of this secondary layer could be washed out through the single layer of Tetrapods. It was concluded that secondary armour is not washed out through...
conference paper 2004
document
Tillema, T. (author), Van Wee, B. (author), De Jong, T. (author)
conference paper 2003
document
Loman, G.J.A. (author), De Jong, J.J.A. (author), Moir, J.R. (author), Burgers, A. (author), Verhagen, H.J. (author)
Man-made islands in the Mackenzie river (Canada) for oil exploitation may obstruct the free flow of ice during spring break up. These ice dams may cause considerable rise of the water level in the rivers, resulting in floods. A numerical model is presented to simulate ice dam formation an river floods.
conference paper 1983
Searched for:
(61 - 67 of 67)

Pages