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Annerose E. van der Mijle, Petra J. Woestenberg, Leanne J. Kosse and Eugène P. van Puijenbroek
Paternal medication use around the time of conception is common, but information about its effects on pregnancy outcome and the health of the child is generally limited. The aim of this study is to examine the feasibility of studying paternal exposure in...
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A A Janse, I J van der Walt, P L Crouse
Pág. 124
Omdat voertuigbande ontwerp word om duursaam te wees, skep dit aan die einde van hul ekonomiese lewe ?n groot afvalprobleem. Bande is nie bio-afbreekbaar nie en berging veroorsaak gesondheids-, besoedelings- en brandgevaar. Wêreldwyd word jaarliks ongeve...
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J F Murray, G van der Horst, M Allsopp, R Kotze
Pág. 128
Apis mellifera-spesies (heuningbye) is noodsaaklike bestuiwers van gewasse. Voortplantingsukses, afhanklik van spermkwaliteit (bepaal deur strukturele en funksionele eienskappe), is dus belangrik vir hul voortbestaan. Literatuur oor die spermgehalte van ...
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Joost W. M. Kranenborg, Geert H. P. Campmans, Niels G. Jacobsen, Jebbe J. van der Werf, Ad J. H. M. Reniers and Suzanne J. M. H. Hulscher
We present a fully coupled 2DV morphodynamic model, implemented in OpenFOAM® that is capable of simulating swash-zone morphodynamics of sandy beaches. The hydrodynamics are described by the Reynolds-averaged Navier?Stokes (RANS) equations with a k&#x...
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Greg A. Ludvigson, Aaron F. Diefendorf, Marina B. Suarez, Luis A. González, Megan C. Corcoran, Kristen Schlanser, Peter P. Flaig, Paul J. McCarthy, Dolores van der Kolk, David Houseknecht and Margaret Sanders
We report estimated stable isotope compositions of depositional waters and paleoprecipitation from the Cretaceous Arctic to further elucidate the role of the global hydrologic cycle in sustaining polar warmth during that period. Estimates are based on ne...
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Renier Koen, Izak J Van der Walt, Arnold A Jansen, Philippus L Crouse
Pág. 1 - 6
Die fluoorradikale wat in ?n nie-termiese CF4-radiofrekwensieplasma (glimontladingsplasma) opgewek word, reageer geredelik met silikoonkarbied (SiC) met die vorming van vlugtige SiF4 en CF4. In ?n spuitbedopstelling wat hier gebruik word, bewer...
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Arnold A Jansen, Izak J Van der Walt, Philippus L Crouse
Pág. 14 - 31
Daar word na plasmas as die vierde toestand van materie verwys. In die natuur manifesteer plasmas as korona-ontladings, weerlig, aurora borealis en in sterre soos die son. Plasmas kan ook opgewek word met elektriese boogontladings, radiofrekwen...
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Leo Koop, Karin J. van der Reijden, Sebastiaan Mestdagh, Tom Ysebaert, Laura L. Govers, Han Olff, Peter M. J. Herman, Mirjam Snellen and Dick G. Simons
Backscatter data from multibeam echosounders are commonly used to classify seafloor sediment composition. Previously, it was found that the survey azimuth affects backscatter when small organized seafloor structures, such as sand ripples, are present. Th...
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Alireza R. Amiri-Simkooei, Leo Koop, Karin J. van der Reijden, Mirjam Snellen and Dick G. Simons
Seafloor characterization using multibeam echosounder (MBES) backscatter data is an active field of research. The observed backscatter curve (OBC) is used in an inversion algorithm with available physics-based models to determine the seafloor geoacoustic...
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Leo Koop, Alireza Amiri-Simkooei, Karin J. van der Reijden, Sarah O?Flynn, Mirjam Snellen and Dick G. Simons
High resolution maps of sandy seafloors are valuable to understand seafloor dynamics, plan engineering projects, and create detailed benthic habitat maps. This paper presents multibeam echosounder backscatter classification results of the Brown Bank area...
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