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See detailA regional travel model for predicting the number of visitors in forests: application to the Walloon region
Colson, Vincent ULg; Lejeune, Philippe ULg

in Raschi, A.; Trampetti, S. (Eds.) Management for protection and sustainable development (2008)

The Walloon forests are visited by local people and tourists but the importance of forest recreation is very different from one part of the Region to another. As it was particularly difficult to obtain ... [more ▼]

The Walloon forests are visited by local people and tourists but the importance of forest recreation is very different from one part of the Region to another. As it was particularly difficult to obtain quantified information by counting, a model has been built by GIS and taking results from different surveys (telephone survey and face-to-face interviews) into account. This model makes the distinction between local visitors and one-day tourists coming from the neighbouring regions (in a buffer zone of 50 km). A decay curve based on travel time is used for predicting the number of visits throughout all Walloon forests from each departure point. An attraction function is added to the model to attribute each visit to a woodland and different scenarios have been tested to obtain a distribution of people by regions of provenance as similar as the results of surveys. At a regional level, this model is a good alternative to counting and gives a good overview of the forests for which recreation activities are more relevant and have to be taken into account in forest management plans. [less ▲]

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See detailRegional urban groundwater body risk assessment of contaminants using remotely sensed multi-resolution land-cover data
Batelaan, Okke; Dujardin, Juliette; Jamin, Pierre ULg et al

Conference (2013, September 15)

Contaminated sites are often the result of past relatively anarchic economical and industrial development. The last decades stakeholders are more aware of the risks posed by these sites. Within the Frac ... [more ▼]

Contaminated sites are often the result of past relatively anarchic economical and industrial development. The last decades stakeholders are more aware of the risks posed by these sites. Within the Frac-Weco project an integrated framework for the assessment, at regional scale, of the risks posed by these contaminated sites on water resources and ecosystems has been developed. The methodology is based on the calculation of contaminant fluxes reaching the receptors providing a way of estimating the level of exposure/degradation of these receptors at the groundwater body scale. The most important contamination problems at regional scale are located around old urban and industrialized areas. The land-cover distribution in these zones is of prime importance because it determines the spatial variation of groundwater recharge, which is the main vector of contaminant leaching from soil surface to groundwater. To obtain detailed information about land cover for groundwater recharge modeling, a stratified satellite image classification approach was adopted combining land-cover mapping at pixel level for the studied area as a whole with sub-pixel estimation of imperviousness within built-up zones. The obtained land-cover data is used as an input in the WetSpass model to simulate groundwater recharge at high resolution in spatially complex urban areas. In the next step the simulated groundwater recharge is used as an input in a regional scale groundwater flow and transport model simulating contaminant dispersion through the aquifer. Modeling results are further used to calculate a quality index for the whole groundwater body based on threshold values defined specifically for each contaminant. The approach proposed has been applied on the RWM073 groundwater body corresponding to the alluvial deposits of the Meuse River, Liège (Belgium). The high-resolution groundwater recharge estimations obtained by integrating remote sensing in the modeling procedure allow a better identification of the potential sources of contaminants and enable a proper quantification of total fluxes of contaminants from brownfields into the groundwater. The developed framework for regional risk assessment results in a global quality indicator for the groundwater body which can be used as input for decision-making. [less ▲]

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See detailRegional variability in mottled subclinical melanoderma in the elderly.
Petit, Ludivine; Fogouang, L.; Uhoda, Isabelle et al

in Experimental Gerontology (2003), 38(3), 327-31

The density in melanin chromatophores becomes heterogeneous in the epidermis during the early events of photoaging. Little is known about the regional variability in the resulting mottled skin appearance ... [more ▼]

The density in melanin chromatophores becomes heterogeneous in the epidermis during the early events of photoaging. Little is known about the regional variability in the resulting mottled skin appearance on the sun-exposed parts of the body in the elderly. The relationship between these features and the dermal atrophy related to aging is also an area ripe for study. The aim of the present study was to objectively assess and compare such aspects of photoaging in older subjects. A computer-assisted video camera equipped with an internal ultraviolet-emitting unit (Visioscan) was used in combination with image analysis to quantify the infraclinical mottling of the skin on the forehead, neck and dorsal forearm. A Densi Score device served to assess the dermal atrophy by rating the skin folding capacity. A mottled subclinical melanoderma was disclosed on the three evaluation sites in all subjects irrespective of their phototypes. Three main patterns were identified corresponding to regular perifollicular dots, streaky macules along shallow wrinkles and unevenly shaped macules in the interfollicular area. The extent in melanoderma was larger on the forehead than on the neck and forearm. The age after 60 years did not influence the severity of mottled melanoderma, but clearly altered the skin folding capacity. The greatest inter-individual differences in mottled melanoderma were found in phototype II subjects. In conclusion, infraclinical mottled melanoderma is present in all individuals after 60 years of age. This type of epidermal photoaging does not appear to be influenced in older ages. By contrast, skin laxity due to dermal aging continues to progress beyond the age of 60 years. [less ▲]

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See detailRegional variability in stratum corneum reactivity to antiseptic formulations.
Quatresooz, Pascale ULg; Xhauflaire, Emmanuelle ULg; Pierard, Claudine ULg et al

in Contact Dermatitis (2007), 56(5), 271-3

Skin does not react in an identical way to the action of chemicals over all anatomic sites. Accordingly, distinct regional differences have been described in relation to irritancy. The present study ... [more ▼]

Skin does not react in an identical way to the action of chemicals over all anatomic sites. Accordingly, distinct regional differences have been described in relation to irritancy. The present study assesses the regional variations of stratum corneum (SC) reactivity to 3 proprietary antiseptic solutions (povidone iodine (PVP-I), 70 mg/ml and 100 mg/ml, and chlorhexidine digluconate 50 mg/ml) using the corneoxenometry (CXM) bioassay. SC was harvested from the volar forearm, the forehead and the back in 30 young adults. Each SC sample was covered by one of the neat test product or deionized water for 2 hr at 20 degrees C. The intrinsic staining property of each antiseptic on SC was assessed by reflectance colorimetry. For the CXM bioassay, samples were then stained by a toluidine blue-basic fuschin solution in order to show protein denaturation induced by the test products. The colorimetric index of mildness (CIM = L*- Chroma C*) was measured by colorimetry. Data show that PVP-I 100 mg/ml was the least reactive antiseptic to the SC. It was significantly milder than the 2 other antiseptics. [less ▲]

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See detailRegional variations of the otter (Lutra lutra) diet in western France
Libois, Roland ULg; Rosoux, René; Delooz, Etienne

Poster (1991, March)

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See detailRegional, aber standardkompatibel. Regionale Umgangssprache im Rheinland
Möller, Robert ULg

in Valentin, Jean-Marie (Ed.) Akten des XI. Internationalen Germanistenkongresses Paris 2005. "Germanistik im Konflikt der Kulturen.". Band 4: Empirische Grundlagen moderner Grammatikforschung [...]. (2008)

Detailed reference viewed: 21 (1 ULg)
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See detailRegional, Interregional and Global Arrangements and Multilateral Organizations
Santander, Sébastian ULg

in Telò, Mario (Ed.) Globalization, Multilateralism, Europe. Towards a Better Global Governance? (2014)

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See detailRegional, Interregional and Global Arrangements and Organizations
Santander, Sébastian ULg

in Telò, Mario (Ed.) International Relations: A European Perspective (2009)

Cet contribution trace un large panorama des accords régionaux et interrégionaux et revient aussi sur les organismes multilatéraux

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See detailRegional-based typology of the main fungal diseases affecting winter wheat in the Grand-Duchy of Luxembourg
El Jarroudi, Moussa ULg; Giraud, Frédéric; Delfosse, Philippe et al

in Phytopathology (2011), 101

Despite its small territory size, the Grand-Duchy of Luxembourg (GDL) has several microclimates that result in a variability of disease severity between the South (Gutland) and the North (Oesling ... [more ▼]

Despite its small territory size, the Grand-Duchy of Luxembourg (GDL) has several microclimates that result in a variability of disease severity between the South (Gutland) and the North (Oesling). Septoria leaf blotch disease of wheat is an important disease in the GDL. Over 2003–2009, the severity was strong in Gutland (51% on average over the last two upper leaves at the late milk growth stage) and low in the Oesling (16% for the same leaves). For the years 2006, 2008 and 2009, the disease severity was less than 6% in the Oesling while it exceeded 40% in the Gutland. The second fungal disease that has become economically important is the wheat leaf rust. Over the same period, the Gutland and the Oesling showed consistently the highest and lowest disease severity respectively. In 2003 and 2007, the Gutland showed the highest disease severity with 66% and 57% respectively, whereas the lowest severity (<1%) was observed in the Oesling. Another important disease is wheat powdery mildew. The 2003 and 2009 cropping seasons showed the highest disease severity with 15% and 40%, respectively, in the Oesling whereas less than 1% severity was registered in the Gutland. Fusarium head blight was also present in the eastern part of the Gutland showing the highest prevalence and severity in 2007 and 2008 (8.5% and 8.3% respectively). These prevalence and severity percentages were significantly higher compared to the Oesling (% prevalence % severity, p = 0.049 and p = 0.012, respectively, Tukey’s test). [less ▲]

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See detailRegional-based typology of the main fungal diseases affecting winter wheat.
El Jarroudi, Moussa ULg; Giraud, Frédéric; Delfosse, Philippe et al

Poster (2011, August 06)

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See detailLa régionalisation de l'impôt des personnes physiques
Bourgeois, Marc ULg

Scientific conference (2012, January 23)

Detailed reference viewed: 29 (3 ULg)
See detailLa régionalisation de l'impôt
Bourgeois, Marc ULg

Scientific conference (2011, November 15)

Detailed reference viewed: 12 (1 ULg)
See detailRégionalisation de la charge d'intérêts de la dette publique
Jurion, Bernard ULg; Ligot, C.; Mahy, B. et al

Report (1994)

Detailed reference viewed: 36 (3 ULg)
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See detailRégionalisation des débits d'étiage en Région wallonne
Gailliez, Sébastien ULg; Grandry, Maud ULg; Verstraete, Arnaud et al

Conference (2012, April 26)

Detailed reference viewed: 54 (19 ULg)
See detailLa régionalisation des débits en Région wallonne
Gailliez, Sebastien; Dautrebande, Sylvia; Degre, Aurore ULg

(2007)

Detailed reference viewed: 52 (19 ULg)
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See detailRégionalisation des paramètres du modèle maillé: impact de la déforestation sur le régime hydrologique de la Lokoho (Madagascar)
Randriamaherisoa, Alain; Binard, Marc ULg

in Acte des VIII Journées hydrologiques de l'ORSTOM: Régionalisation en hydrologie - Application au développement (1992)

The use of a regionalized hydrological model is very useful for the prediction of the impact of land cover changes on the volume of the runoff and its transfer. These models require a good description of ... [more ▼]

The use of a regionalized hydrological model is very useful for the prediction of the impact of land cover changes on the volume of the runoff and its transfer. These models require a good description of the phenomena and the hydrological parameters linked te the watershed physical characteristics. The spatial distribution of the physiographical and hydrological characteristics can be identitled either from remote sensing data or from numerical cartography in general. In the hydrological simulation and flooding prediction model, developed in our laboratory, the regionalization of parameters is based on a square gridding of the basin, considering the meshes of the discretized basin as the analysis unit of hydrological balance. Different metrical and cartographical data sources are used to characterize each mesh of the grid: aerial photography and satellite imagery for the land use, and Digital Terrain Model (DTM) for the topographical characteristics like crest lines, thalwegs, naturel drainage network, slope, orientation,... Other mapped data, like soit type, can be numerized to help in estimating the drainage condition of each mesh. Hydrological data (rainfail, evapotranspiration and runoff) are computed for each mesh by the Thiessen's polygons or in accordance with the associated sub-basin. Ail the data are handled by a GIS in order to classify the surface runoff potential of all meshes in the watershed. This procédure allow to consider the spatial variability of the physical characteristics at small scale and to study quickly their spatio-temporal evolutions. The model was used to study the case of one large rural watershed in Madagascar. Since the 1960's, several waterworks were achieved (e.g. detours rivers, ...) in order to struggle against the flooding of the upstream fertile plain (subject of various developments). Meanwhile, the forest of the basin hillslopes was and still strongly claimed for land cultivation (pluvial vice crops), which is necessary for the subsistence of a fast growing population due to immigration and exploding demography. It is interesting to study the impact of die basin physical characteristics changes, particularly of the land cover, on the rives flow régime in this basin. [less ▲]

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See detailLa régionalisation du droit pénal international
Flore, Daniel ULg; Thomas, F.

in Revue internationale de droit pénal (1994)

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See detailLa régionalisation du droit pénal international
Flore, Daniel ULg; Thomas, F.

in Revue de Droit Pénal et de Criminologie (1993)

Detailed reference viewed: 9 (0 ULg)