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Controlling chemical dosing for sulfide mitigation in sewer networks using a hybrid automata control strategy Ghent University

Yiqi Liu, Ramon Ganigué, Keshab Sharma, Zhiguo Yuan
Chemicals such as magnesium hydroxide (Mg(OH)(2)) and iron salts are widely used to control sulfideinduced corrosion in sewer networks composed of interconnected sewer pipe lines and pumping stations. Chemical dosing control is usually non-automatic and based on experience, thus often resulting in sewage reaching the discharge point receiving inadequate or even no chemical dosing. Moreover, intermittent operation of pumping stations makes ...

Impacts of herbicide sequences and vertical tuber distribution on the chemical control of yellow nutsedge (Cyperus esculentus L.) Ghent University

Sander De Ryck, Dirk Reheul, Benny De Cauwer
Cyperus esculentus is an invasive perennial sedge threatening agricultural production. In Belgium, best in-crop control options involve, amongst other methods, growing maize in monoculture which allows the sequential use of selective herbicides with activity against C. esculentus. Two pot experiments were carried out to investigate the effect of genetically different clones and chemical control strategy on C. esculentus control. Additionally, ...

A macro-quality field control of dual energy X-ray absorptiometry with anatomical, chemical and computed tomographical variables Vrije Universiteit Brussel

Aldo Scafoglieri, Steven Provyn, Olivia Louis, Joanne Wallace, Johan De Mey, J.p Clarys

Dual-energy X-ray absorptiometry (DXA) studies both in humans and animals one cannot avoid obtaining a controversial impression concerning its use. The pro's and contra's however are dictated by the model DXA was verified with. This study will cross-validate and compare fan beam data with both dissection and computed tomography (CT) scanning data. Twelve porcine carcasses, viscera included, were measured with DXA and CT before dissection into ...

Evaluation of the effectiveness of chemical control for Chagas disease vectors in Loja Province, Ecuador Institute of Tropical Medicine

Mario J. Grijalva, Anita G. Villacis, Sofia Ocana-Mayorga, Cesar A. Yumiseva, Claudia Nieto Sanchez, Esteban G. Baus, Ana L. Moncayo

The objective of this study was to evaluate the effectiveness of selective and community-wide house insecticide spraying in controlling triatomines in the subtropical areas of Loja Province, Ecuador. We designed a quasi-experimental pre-post-test without a control group to compare entomological levels before and after spraying. The baseline study was conducted in 2008. Second, third, and fourth visits were conducted in 2010, 2011, and 2012 in ...

Presence of the weakly pathogenic Fusarium poae in the Fusarium head blight disease complex hampers biocontrol and chemical control of the virulent Fusarium graminearum pathogen Ghent University

Jiang Tan, Noémie De Zutter, Sarah De Saeger, Marthe De Boevre, Trang Tran Minh, Theo van der Lee, Cees Waalwijk, Anne Willems, Peter Vandamme, Maarten Ameye, et al.
Fusarium head blight (FHB) in wheat (Triticum aestivum L.) is caused by a consortium of mutually interacting Fusarium species. In the field, the weakly pathogenic F. poae often thrives on the infection sites of the virulent F. graminearum. In this ecological context, we investigated the efficacy of chemical and biocontrol agents against F. graminearum in wheat ears. For this purpose, one fungicide comprising prothioconazole + spiroxamine and two ...