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See detailPolitologie africaine: quelle spécificité pour l'avenir?
Kabamba, Bob ULg

in Revue de la Faculté de Droit de l'Université de Liège (2009)

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See detailLes politologues dans le débat public
Jacquemain, Marc ULg

Conference (2009, September)

The paper shows how political analysts not only have the right to participate in public debates but also have a duty to do so. It also examines what are the conditions of separation between expert ... [more ▼]

The paper shows how political analysts not only have the right to participate in public debates but also have a duty to do so. It also examines what are the conditions of separation between expert attitude and commitment so that this freedom of speech does not degenerate into propaganda. [less ▲]

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See detailPOLLEN DISPERSAL ABILITIES OF ALS TARGET-SITE RESISTANT BLACK-GRASS (ALOPECURUS MYOSUROIDES HUDS.)
Maréchal, Pierre-Yves ULg; Henriet, François; Vancutsem, Françoise ULg et al

Poster (2011, September 05)

Target-Site Resistant (TSR) black-grass individuals were introduced in a field, at different growing stages to be synchronised with autochthonous population. Patches of susceptible black-grass were ... [more ▼]

Target-Site Resistant (TSR) black-grass individuals were introduced in a field, at different growing stages to be synchronised with autochthonous population. Patches of susceptible black-grass were created by setting protective canvas on few areas (from 0,5 up to 32m²), during herbicide spraying and they were removed afterwards. Those patches were disposed along rays starting from the introduction point at distances from 2 to 128 meters. In those patches, local black-grass grew regularly and was able to receive some pollen from the resistant individuals, located in the centered emitting area. The herbicide field treatment (mesosulfuron+iodosulfuron : 15+3 g.a.i.ha-1) was efficient, confirming that the local population is susceptible to ALS inhibitors, was preceded by another herbicide treatment targeting only broad-leaves weeds, performed on the entire field, including patches, such as the rest of cultural practices such as fertilization, and fungicide and insecticide treatment. All seeds were harvested in each patches separately and tested in glasshouse. Seed samples were sprayed with sulfometuron, herbicide active ingredient known not to be affected by non-target site resistance, in a way to detect the percentage of resistant black-grass that can be engendered after the introduction of TSR individuals and to determine the distance resistant pollen can cover. DNA analyses were performed on surviving plants to confirm the presence of the mutation. [less ▲]

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Peer Reviewed
See detailPollen grain viability in accessions of Crotalaria juncea L. (Fabaceae)
Coelho, APD; Morais, K; Laughinghouse IV, Haywood ULg et al

in Agrociencia (2012), 46

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See detailPollen viability of genotypes of Eragrostis plana from different geographic populations in Rio Grande do Sul, Brazil
Piccini, F; Frescura, VDS; Laughinghouse IV, Haywood ULg et al

in Enciclopédia Biosfera (2012), 8(15), 1316-1324

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See detailPollen viability of Polygala paniculata L. (Polygalaceae) using different methods of staining
Frescura, VDS; Laughinghouse IV, Haywood ULg; Canto-Dorow, TS et al

in Biocell (2012), 36(3), 143-145

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See detailA pollen-based record of late glacial-Holocene climatic variability in the southern lake district, Chile.
Vargas-Ramirez, Lourdes; Roche, Emile ULg; Gerrienne, Philippe ULg et al

in Journal of Paleolimnology (2008), 39

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See detailPollutant Cycling and Removal Processes within a subsurface Flow Constructed Wetland.
Fonder, N.; Xanthoulis, Dimitri ULg

in Wetland Pollutant Dynamics and Control. (2007, September)

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See detailPollution and Siltation of Rivers in the Western Highlands of Cameroon: a Consequence of Farmland Erosion by Runoff
Djoukeng, Henri Grisseur ULg; Tankou, Christopher Mubeteneh; Degré, Aurore ULg

Conference (2014, November 05)

In the western highlands agro-ecological zone of Cameroon, rivers are constantly silted and polluted with waste from cultivated plots. This study investigated on the characterization and quantification of ... [more ▼]

In the western highlands agro-ecological zone of Cameroon, rivers are constantly silted and polluted with waste from cultivated plots. This study investigated on the characterization and quantification of sediment from plots cultivated in the watershed Méloh; among these sediment we highlighted soil, plant residues, chemical packages and plastic casing used for irrigation. In a natural rocky bottom wells, we performed for a period of three years the collection, differentiation and measurement of trapped sediment in the cultivated part of river that runs through the watershed. The total cultivated area is about 7.5 ha; slopes are operated between 14% and 17%. During the years 2012 and 2013 where farmers practiced both flatbed and ridging along the steepest slope, two methods of land preparation that do not contribute positively to water conservation, we collected an average of 10.429 t.ha-1. During the 2013 crop year, with the participation of curious farmers we experimented tied ridging in a potato; this technique was adopted on 75% of plots in 2014 and we collected 3.586 t.ha-1, a decrease of 65.61% compared to the average of previous years. This study showed that traditional agricultural practices are a cause of siltation and pollution of the Méloh river, thus almost all rivers in the study area by what the topography is similar and agriculture the main activity. Tied ridging significantly reduced siltation of rivers; it is thus an effective technique to fight against water pollution in mountain agriculture. [less ▲]

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See detailPollution au port pétrolier de Wandre : prospection préliminaire
Van Der Rest, Noëlle; Dassargues, Alain ULg; Monjoie, Albéric

Report (1992)

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See detailPollution chimique de l'environnement et risque toxique pour l'homme. Le rôle particulier des dérivés pesticides organochlorés
Charlier, Corinne ULg; Plomteux, Guy ULg

in Annales de Biologie Clinique (2002), 60(1, Jan-Feb), 37-46

There is an increasing concern about environmental exposure to multiple chemicals and adverse changes in reproductive development, function, or behaviour in wildlife. The major group of environmental ... [more ▼]

There is an increasing concern about environmental exposure to multiple chemicals and adverse changes in reproductive development, function, or behaviour in wildlife. The major group of environmental chemicals, such as organochlorine pesticides, polychlorinated biphenyls (PCBs) and other xenoestrogens are currently known to have estrogenic effects in vertebrates or fishes. Recent studies suggest that past exposure to such estrogenic compounds may affects the risk of developing breast cancer, precocious puberty, or impaired fertility in man. [less ▲]

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See detailLa pollution de la chaîne alimentaire par la dioxine
Maghuin-Rogister, Guy ULg; Delaunois, A.; De Pauwe, E. et al

in Annales de Médecine Vétérinaire (1999), 143

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See detailPollution des sols : interventions et responsabilités des pouvoirs publics
Delnoy, Michel ULg

in Sols contaminés, sols à décontaminer (1996)

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See detailPollution et contamination des sols due à l'industrie métallurgique à Lubumbashi (RDC): empreinte écologique, impact paysager, pistes de gestion
Vranken, Isabelle ULg

Master's dissertation (2010)

Depuis le début du siècle dernier à Lubumbashi (République démocratique du Congo), l’usine de traitement de minerai de cuivre de la société publique Gécamines, a longtemps pollué les sols avoisinants par ... [more ▼]

Depuis le début du siècle dernier à Lubumbashi (République démocratique du Congo), l’usine de traitement de minerai de cuivre de la société publique Gécamines, a longtemps pollué les sols avoisinants par ses fumées chargées en cuivre. Ces émissions ont un impact sanitaire et environnemental substantiel. Sous le vent de l’usine, la végétation est détruite, et l’érosion des sols nus en résultant disperse les polluants dans l’environnement. L’objet de ce mémoire est d’intégrer plusieurs recherches en cours sur cette pollution pour y formuler des pistes de gestion durable qui préservent l’environnement et la santé. Ce mémoire repose principalement sur deux travaux. Le premier est une analyse de la structure spatiale de la végétation, pour identifier l’empreinte écologique d’un cône de pollution issu de l’activité de l’usine Gécamines. Le second est une analyse de perception de l’impact paysager de l’activité minière et métallurgique par les habitants. Les pistes de gestion proposées préconisent le recours à la phytoremédiation, moins coûteuse que les techniques classiques de décontamination (enlèvement des terres, traitements chimiques). Cette technique consiste à revégétaliser les sols nus contaminés à l’aide de plantes tolérantes aux métaux lourds. Elle permet soit d’immobiliser les contaminants, soit de décontaminer les sols. L’applicabilité de cette technique à Lubumbashi est testée selon divers facteurs : relief, degré de contamination, proximité de la population. Ces recherches ont montré la nécessité de combiner les techniques où elles étaient les plus adaptées selon les critères précédemment mentionnés. Une typologie de zones à remédier a ainsi été élaborée, assortie d’un ensemble d’actions pour chaque zone, associant diverses formes de phytoremédiation à d’autres mesures décontaminatoires ou anti-érosives. Il a été tenté d’en maximiser la valorisabilité économique, par souci de viabilité : foresterie sur les zones les moins contaminées, vente de biomasse cupricole comme minerais, etc. En effet, la faisabilité technique de ces actions est conditionnée par la faisabilité économique et institutionnelle. Une prise en charge par l’Etat congolais d’un projet de gestion de l’ampleur attendue est peu probable, étant donné sa corruption et son manque de moyens. L’idée de valorisation pour les entreprises locales mais aussi les citoyens est alors avancée dans une optique de partenariat pour permettre l’application de la gestion. Beaucoup de données manquent pour concrétiser la gestion : pour caractériser la nature, l’intensité et la distribution spatiale de la pollution, ou évaluer le potentiel de remédiation des espèces métallicoles. Ce mémoire présente l’intérêt de cibler les données nécessaires, existantes ou non, à l’élaboration d’un plan de gestion, afin d’orienter les recherches ultérieures à Lubumbashi, pour pouvoir coordonner les recherches sur place. [less ▲]

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See detailPollution lumineuse et santé
JEDIDI, Haroun ULg

Scientific conference (2014, July 04)

Cet exposé détaille les effets néfastes de la pollution lumineuse sur l'environnement et la santé humaine.

Detailed reference viewed: 18 (7 ULg)