|
|
|
|
|
| Pronk, W.; Zuleeg, S.; Lienert, J.; Escher, B.; Koller, M.; Berner, A.; Koch, G.; Boller, M.. |
| Pilot tests were performed with a process combination of electrodialysis and ozonation for the removal of micropollutants and the concentration of nutrients in urine. In continuous and batch experiments, maximum concentration factors up to 3.5 and 4.1 were obtained, respectively. The desalination capacity did not decrease significantly during continuous operation periods of several weeks. Membrane cleaning after 195 days resulted in approximately 35% increase in desalination rate. The Yeast Estrogen Screen (YES), a bioassay that selectively detects oestrogenic compounds, confirmed that about 90% of the oestrogenic activity was removed by electrodialysis. HPLC analysis showed that ibuprofen was removed to a high extent, while other micropollutants were... |
| Tipo: Journal paper |
Palavras-chave: Crop husbandry; Soil quality; Air and water emissions. |
| Ano: 2007 |
URL: http://orgprints.org/13159/1/Pronk%2Detal%2D2007%2Dwater_sciene_technology_56_5.pdf |
| |
|
| |
|
|
| Stegeman, J.A.; Bouma, A.; Elbers, A.R.W.; Van Boven, M.; De Jong, M.C.M.; Koch, G.. |
| On 28 February 2003 an epidemic of fowl plague started in The Netherlands, caused by a highly pathogenic avian influenza virus (HPAIV) of type H7N7. The epidemic started in the ‘Gelderse Vallei’, spread to adjacent areas and to the province of Limburg. During the epidemic, 255 flocks were diagnosed as infected. The epidemic was combated by stamping out infected flocks and pre-emptive culling of flocks within a 1-km radius. Moreover, screening and tracing activities were implemented to enhance the detection of infected flocks. In addition, a transportation ban was enforced. In a further stage of the epidemic, poultry-free buffer zones were created, contacts between different parts of the country were reduced by compartmentalization and large areas were... |
| Tipo: Conference proceedings |
|
| Ano: 2005 |
URL: http://library.wur.nl/ojs/index.php/frontis/article/view/1023 |
| |
|
| |
|
|
| Van Boven, M.; Van der Goot, J.; Elbers, A.R.W.; Koch, G.; Nodelijk, G.; De Jong, M.C.M.; De Vries, T.S.; Bouma, A.; Stegeman, J.A.. |
| In The Netherlands a large outbreak of highly pathogenic avian influenza in poultry occurred in 2003. The outbreak has had devastating consequences, from both economic and animal-health perspective. Vaccination of poultry offers a potentially attractive measure to control and prevent outbreaks of highly pathogenic avian influenza. In this paper we discuss, from an epidemiological perspective, the values and limitations of vaccination as a control measure during an outbreak and as a preventive measure in an area at risk. In particular, we will discuss (i) the epidemiological prerequisites that have to be met for a vaccine and vaccination campaign to be effective, and (ii) experimental data that have helped quantifying the effect of vaccination on the... |
| Tipo: Conference proceedings |
|
| Ano: 2005 |
URL: http://library.wur.nl/ojs/index.php/frontis/article/view/1026 |
| |
|
|
|
