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See detailL’envers du décor. Espionnage, complot, trahison, vengeance et violence en pays bourguignons et liégeois
Marchandisse, Alain ULg; Cauchies, Jean-Marie

Book published by Centre européen d'Études bourguignonnes (2008)

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Peer Reviewed
See detailEnvironment and forced migration: a policy-relevant research approach
Gemenne, François ULg

Conference (2008, October 28)

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See detailEnvironment factors affecting racing performances of Thoroughbred horses in Algeria
Tennah, Safia ULg; Kafidi, Nacereddine; Antoine-Moussiaux, Nicolas ULg et al

Poster (2013, October 11)

The results of the flat races organized in Algeria from 1995 to 2007 by the Algerian Horse Racing Society were used to estimate non-genetic parameters of racing performances of Thoroughbred horses ... [more ▼]

The results of the flat races organized in Algeria from 1995 to 2007 by the Algerian Horse Racing Society were used to estimate non-genetic parameters of racing performances of Thoroughbred horses. Performances were assessed through two earnings traits (the logarithm of annual virtual earnings: LAEV and the logarithm of average annual virtual earnings per start: LAEV/S) and a normalized ranking (PERF). The phenotypic correlations between these traits were calculated, in order to deduce what is common and what is specific to each measure. The environment factors that were investigated are age (3 to 8 years and older), sex (male or female), year of race (1995 to 2007) and the interactions between these factors. The General Linear Model (GLM) procedure from SAS software was used to identify and quantify the non-genetic factors affecting racing performances. The results showed significantly high positive correlations (p<0.001) between the three traits, hence considered as accounting for similar aptitudes. The effects of age (with a plateau between 4 and 5 years) and year (with an increasing trend for more recent years) turned out to be significant (p<0.001) for the three traits, the sex effect was only significant for the PERF trait (with better performances for males than females) and an interaction between the age and year of the performance was the only significant interaction (p<0.05) for the LAEV trait. The significant effects of these non-genetic factors indicate the need to adjust the earnings and ranks in the context of a program for genetic improvement of Thoroughbred horses in Algeria. [less ▲]

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See detailEnvironmental and endocrine control of barbel (Barbus barbus L.) reproduction.
Poncin, Pascal ULg

in Scott, A. P.; Sumpter, J. P.; Kime, D. E. (Eds.) et al Reproductive Physiology of Fish. (1991)

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See detailEnvironmental and genetic sources of variability of stearoyl Coenzyme-A desaturase 9 activity during and across lactations
Arnould, Valérie ULg; Gengler, Nicolas ULg; Soyeurt, Hélène ULg

Conference (2009, September 23)

Milk fatty acid (FA) profile is far from the optimal fat composition in regards to human health. Different natural sources of variation such as feeding or genetics could be used to modify the contents of ... [more ▼]

Milk fatty acid (FA) profile is far from the optimal fat composition in regards to human health. Different natural sources of variation such as feeding or genetics could be used to modify the contents of unsaturated fatty acids. The impact of feeding is well described; however, genetics effects on the milk FA composition are not well studied. Increasing the unsaturated fatty acids contents of bovine milk could have the potential to raise the nutritive and therapeutic values of dairy products. The stearoyl Coenzyme-A desaturase 9 (delta-9) gene was identified as a potential functional candidate gene affecting milk fat composition in dairy cattle. The objective of this research was to study the genetic variability on this enzyme activity across lactations. A total of 199,977 test-day records were obtained from 29,603 Holstein cows in first lactation, 154,267 records from 23,453 Holstein cows in second lactation, and 173,244 records from 75,887 Holstein cows in third and later lactations. The used model was a multiple-trait random regressions test-day model. Fixed effects were: herd x date of test, and class of age. Random effects were: herd x year of calving, permanent environmental, additive genetic, and residual effects. The studied traits were milk yield, protein content, percentage of fat, monounsaturated fatty acids estimated by mid-infrared spectrometry, and the ratios reflecting the delta-9 activity. Obtained heritability estimates of delta-9 as well as the genetic and phenotypic correlations varied across lactations. These results suggest potential improvements of milk fat composition based on delta-9 activity using animal selection and appropriate management practices. [less ▲]

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See detailEnvironmental and human impact of an old-timer incinerator in terms of dioxin and PCB level: A case study
Pirard, Catherine; Eppe, Gauthier ULg; Massart, Anne-Cécile ULg et al

in Environmental Science & Technology (2005), 39(13), 4721-4728

The impact of a recently closed old municipal solid waste incinerator (MSWI) on polychlorodibenzo-p-dioxin (POD), polychlorodibenzofuran (PCDF), and polychlorinated biphenyl (PCB) levels in the ... [more ▼]

The impact of a recently closed old municipal solid waste incinerator (MSWI) on polychlorodibenzo-p-dioxin (POD), polychlorodibenzofuran (PCDF), and polychlorinated biphenyl (PCB) levels in the surrounding environment and resident serum has been studied in a small rural area of France. Studied soils and eggs from chickens foraging on these soils were sampled in the vicinity of the MSWI under the prevailing wind stream, while comparison samples were collected outside the assumed impact zone. PCB levels observed in soils and eggs did not differ statistically from comparison sites. This confirmed the low impact of MSWI PCB emission on environmental media, compared to other well-known sources. PCDD/PCDF levels in soils and eggs were significantly higher than in comparison samples, pointing out the impact of MSWI emission on the surrounding environment. The high dioxin concentrations in eggs set aside for private consumption would increase the dioxin intake for the studied population. Blood specimens of 10 nonoccupationally exposed volunteers who had lived within a 2 km radius of the incinerator for at least 25 years have been analyzed. When adjusted for age, PCB and PCDD/F blood levels were higher than general European populations and comparable to a similarly exposed Belgian population. [less ▲]

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See detailEnvironmental and technical results of keeping fattening pigs on deep litters
Nicks, Baudouin ULg; Desiron, A.; Canart, B. et al

in Proceedings of the 14th International Pig Veterinary Society Congress (1996)

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See detailEnvironmental applications of isotope ratio - mass spectrometry
Dauby, Patrick ULg

Conference (1996, September)

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See detailEnvironmental aspects in plant protection practices of non-agricultural pesticide users : case study of communes and the ministry of public works and transport (MET) of the Walloon region (Belgium)
Godeaux, Denis; Schiffers, Bruno ULg; Culot, Marc ULg

in Communications in Agricultural and Applied Biological Sciences (vol. 73) (2008)

In order to gain a better understanding of non-agricultural pesticide use and to prepare the legislative and technical dossiers required under the Water Framework Directive, between October 2006 and March ... [more ▼]

In order to gain a better understanding of non-agricultural pesticide use and to prepare the legislative and technical dossiers required under the Water Framework Directive, between October 2006 and March 2007, two surveys were conducted of 97 Walloon communes and 65 districts of the Walloon Ministry of Public Works and Transport (MET) (General Directorates for Motorways and Roads and for Waterway Infrastructure). The questionnaire (26 questions on six topics) was sent by e-mail or fax, with a response rate of 60 out of 97 communes and 33 out of 65 districts. This article describes the environmental aspects of the surveys (health-related aspects are the subject of separate article). The surveys have brought to light a number of good practices (including zero pesticides) and a growing awareness of environmental issues among non-agricultural users. However, bad habits, legislation infringements and a failure to follow good plant protection practice are still a problem and pose major environmental risks (in the form of water pollution from pesticides). Information, awareness-raising and training therefore remain a priority for nonagricultural users. [less ▲]

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See detailENVIRONMENTAL ASPECTS OF CLAY EXPLOITATION FOR FIRED CLAY BRICKS IN CAMEROON
Njoya, A.; Bastin, D.; Melo, U. et al

Poster (2009)

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See detailEnvironmental assessment of the farming enterprise
Debouche, Charles ULg; Lambin, Jean

in Ceuterick, D. (Ed.) International Conference on Application of Life Cycle Assessment in Agriculture, Food and Non-Food Agro-Industry and Forestry: Achievements and Prospects (1996)

The methodology proposed for conducting a llife cycle analysis is adapted to the environmental assessment of the agricultural enterprise by drawing up an eco-balance of the latter; this eco-balance must ... [more ▼]

The methodology proposed for conducting a llife cycle analysis is adapted to the environmental assessment of the agricultural enterprise by drawing up an eco-balance of the latter; this eco-balance must be considered as an energy and matter balance at the bounderies of the system being studied which is the farm enterprise. The eco-balance is achieved by distinguishing 1 the definition of aims and the scoop of the study 2 the inventory and 3 the incidence analysis. [less ▲]

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See detailEnvironmental Changes and Migration Flows. Normative Frameworks and Policy Responses.
Gemenne, François ULg

Doctoral thesis (2009)

Depuis quelques années, d’importants déplacements de populations sont régulièrement annoncés comme l’une des conséquences les plus dramatiques du changement climatique. Plusieurs dizaines de ... [more ▼]

Depuis quelques années, d’importants déplacements de populations sont régulièrement annoncés comme l’une des conséquences les plus dramatiques du changement climatique. Plusieurs dizaines de millions de personnes pourraient ainsi être contraintes à l’exil en raison des impacts du réchauffement global, selon les estimations les plus alarmistes. Ces prédictions, pourtant, relèvent d’une logique largement déterministe, qui simplifie souvent la relation entre dégradation environnementale et migrations à une causalité directe, et néglige l’importance des cadres normatifs. Cette thèse prend le contre-pied de l’approche déterministe dominante, et soutient que l’ampleur et la nature de ces flux migratoires ne dépendent pas uniquement des impacts du changement climatique, mais également – et surtout – des politiques qui seront mises en place pour limiter ces impacts et encadrer ces migrations. Elle adopte une posture constructiviste, et s’interroge sur la manière dont les réponses politiques apportées jusqu’ici aux mouvements de population provoqués par des dégradations environnementales influencent la conceptualisation du phénomène de ‘migrations environnementales’. Afin d’analyser le processus politique de mise en place de cadres normatifs et de réponses politiques en place au niveau international, la thèse utilise le modèle théorique de l’Advocacy Coalition Framework (ACF), mis au point par Sabatier et Jenkins-Smith. Dans un premier temps, la thèse analyse l’émergence du concept de ‘migrations environnementales’ dans la littérature et à l’agenda politique. La littérature sur le sujet est traversée par une opposition entre deux courants de pensée, que j’ai qualifiés respectivement de ‘sceptique’ et d’ ‘alarmiste’. Le courant sceptique, composé essentiellement de spécialistes des migrations, soutient que toute migration est multi-causale, et que l’environnement n’est pas un facteur migratoire plus déterminant qu’un autre. Ainsi, les sceptiques estiment que le concept de ‘migration environnementale’, considéré comme un type spécifique de migration, n’a guère de sens. A l’inverse, les alarmistes, qui sont essentiellement des spécialistes de l’environnement, affirment que les dégradations de l’environnement constituent un facteur croissant de migrations forcées, qui ont déjà commencé. Ces deux courants de pensée, qui trouvent leur origine dans un fossé disciplinaire, peuvent être analysés comme de véritables coalitions, qui pénètrent le processus politique. Le rôle des chercheurs dans la définition des politiques publiques est dès lors mis en avant, et la thèse émet l’hypothèse que cette opposition entre ‘alarmistes’ et ‘sceptiques’ a dépassé le champ académique pour traverser également le champ politique. La thèse entreprend alors de décrire et d’analyser le développement de normes et de politiques s’appliquant aux déplacements de populations liés à des dégradations de l’environnement dans deux sphères politiques distinctes : les politiques environnementales d’une part, et migratoires d’autre part. Dans les politiques environnementales, la thèse examine en particulier la gestion des catastrophes naturelles au niveau international, et les questions d’adaptation dans les négociations sur un nouveau traité international sur le changement climatique. Le domaine de la gestion des catastrophes naturelles s’est considérablement transformé au cours des dernières, et les personnes déplacées par les catastrophes sont au centre de plusieurs débats, ateliers et recommandations. Pour autant, ce sont négociations sur le changement climatique qui sont devenues, au fil des ans, le réceptacle premier des discussions et revendications sur les ‘migrations climatiques’. Les politiques migratoires, par contre, ont évolué dans un sens très différent. Le régime international de l’asile n’a guère évolué depuis la Convention de Genève de 1951 et son Protocole additionnel de 1967, et n’a guère pris en charge les nouvelles configurations des migrations forcées dans le monde, comme l’importance croissante aux dégradations de l’environnement. Les politiques d’asile et de mobilité n’ont pas non plus véritablement intégré la question, se cantonnant à des formes de protection complémentaires et/ou non contraignantes, dont pourraient se prévaloir ceux qui sont déplacés par une catastrophe naturelle. La thèse cherche à expliquer cette évolution différente par les différentes coalitions qui dominent ces sphères politique : les politiques migratoires sont dominées par les sceptiques, tandis que les politiques environnementales sont dominées par les alarmistes. Depuis le milieu des années 2000, les alarmistes dominent les débats sur les migrations environnementales, et ces débats se sont dès lors déplacés dans la sphère des politiques environnementales, et plus particulièrement dans celles des négociations sur le futur régime climatique. L’apparente réconciliation récente entre les deux coalitions marquent en réalité un glissement vers le terrain des politiques environnementales. Ce glissement révèle que le phénomène de ‘migrations environnementales’ reste largement conceptualisé de manière déterministe, et comme une migration forcée, inéluctable conséquence de l’échec de l’adaptation. Or, des illustrations empiriques, provenant de terrains effectués à La Nouvelle-Orléans après l’ouragan Katrina et à l’archipel de Tuvalu menacé par la montée des eaux, démontrent que cette conceptualisation ne correspond pas à la réalité des flux migratoires liés à des changements de l’environnement. La thèse souligne donc le caractère socialement construit des migrations environnementales, et l’importance du rôle joué par les politiques publiques. [less ▲]

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See detailEnvironmental changes in two lakes of Northern Patagonia (Chile): A 1000 yr reconstruction based on pollen and charcoal.
Vargas, N.; Torres, L.; Araneda, A. et al

Poster (2010)

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See detailEnvironmental control of respiratory disease
Art, Tatiana ULg; McGorum, B. C.; Lekeux, Pierre ULg

in Lekeux, Pierre (Ed.) Equine Respiratory Diseases (2002)

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See detailEnvironmental control to maintain stabled COPD horses in clinical remission: effects on pulmonary function
Vandenput, Sandrina ULg; Duvivier, D. H.; Votion, Dominique ULg et al

in Equine Veterinary Journal (1998), 30(2), 93-96

The objective of this study was to test the hypothesis that stabled COPD horses can be maintained in clinical remission by replacing hay by grass silage and bedding made of wood shavings (Period B) and of ... [more ▼]

The objective of this study was to test the hypothesis that stabled COPD horses can be maintained in clinical remission by replacing hay by grass silage and bedding made of wood shavings (Period B) and of wheat straw (Period C) during 6 weeks, respectively. At the end of these different periods, the pulmonary function of the horses was assessed by mechanics of breathing and arterial blood analyses. These results were compared to those measured in clinical remission obtained after 2 months in pasture (Period A). No significant difference was observed between these 3 periods neither to values obtained for healthy horses placed during 6 weeks in a hay environment. For all that, COPD horses placed in contact with hay in the same barn developed within mean +/- s.d. 8+/-3 days clinical signs of heaves and significant alterations of pulmonary function parameters. [less ▲]

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See detailEnvironmental Controls on the Distribution of Aquatic Macrophytes in Ugandan Crater-lakes
Lebrun, Julie ULg; Mahy, Grégory ULg

Poster (2009, March 27)

This research is part of an integrated paleoecological project which aims at coupling reconstructions of past vegetation and water-quality changes with climate variability. Crater-lakes from East Africa ... [more ▼]

This research is part of an integrated paleoecological project which aims at coupling reconstructions of past vegetation and water-quality changes with climate variability. Crater-lakes from East Africa are favourable to the conservation of proxy indicators such as plant macrofossils used to reconstruct the lake ecosystem. The study of modern macrophytic communities related to present environmental parameters was the first step of this research. Phytosociologic and environmental data were collected in 36 crater-lakes in South-western Uganda. Species abundance and habitat conditions were described in 216 relevés arranged along transects from the lakeshore to the depth limit of aquatic plant development. A cluster analysis identified 8 macrophytes communities and their indicator species were highlighted. Combining two levels of analysis (lake or relevé) with different kind of ordinations (CA and CCA), main parameters explaining community variability were conductivity, pH, Human Impact index, vegetation zonation and productivity (Chlorophyll-a and total nitrogen). Multiple species response curves to environmental parameters were performed to assess the ecological amplitude at the individual level and select species with a good proxy-indicator value. These results give some trends about the ecology of macrophytes communities and the ecological significations of macrofossils. [less ▲]

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