Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
Full Text
Peer Reviewed
See detailEarthquakes, Landslides, Dams and Reservoirs in the Tien Shan, Central Asia
Havenith, Hans-Balder ULg; Abdrakhmatov, Kanatbek; Torgoev, Isakbek et al

in Margottini, Claudio; Sassa, Kyoji (Eds.) Landslide Science and Practice (2013)

Detailed reference viewed: 51 (4 ULg)
Full Text
See detailEarthworm production to improve aquaculture
Andres, Ludovic ULg

Learning material (2014)

Detailed reference viewed: 25 (9 ULg)
Full Text
Peer Reviewed
See detailEarthworms Eisenia fetida affect the uptake of heavy metals by plants Vicia faba and Zea mays in metal-contaminated soils
Lemtiri, Aboulkacem ULg; Liénard, Amandine ULg; Alabi, Taofic ULg et al

in Applied Soil Ecology (2016), 104

Earthworms increase the availability of heavy metals in some situations and aid in maintaining the structure and quality of soil. The introduction of earthworms into metal-contaminated soils has been ... [more ▼]

Earthworms increase the availability of heavy metals in some situations and aid in maintaining the structure and quality of soil. The introduction of earthworms into metal-contaminated soils has been suggested as an aid for phytoremediation processes. In Wallonia, Belgium, a century of industrial metallurgic activities has led to the substantial pollution of soils by heavy metals, including copper (Cu), zinc (Zn), lead (Pb) and cadmium (Cd), due to atmospheric dusts. Two plant species, Vicia faba and Zea mays, and earthworms (Eisenia fetida) (Savigny, 1826) were exposed to different concentrations of long-term-contaminated soils for 42 days. The soil samples, which were collected from the land surrounding a former Zn-Pb ore-treatment plant, exhibited different levels of heavy metals. Our aim was to evaluate the role of earthworms E. fetida on the availability of metals in soils and their effects on metal uptake by V. faba and Z. mays plants at different soil concentrations. The results suggest that earthworms and plants modified the availability of metals in contaminated soils after 42 days of exposure. Earthworm life-cycle parameters were affected by metal contamination and/or the addition of plants; cocoon production and weight were more responsive to adverse conditions than earthworm survival or weight change. The concentrations of Pb and Cd in earthworm tissues decreased in the presence of plants. Results showed that metal accumulation in plants depended on the metal element considered and the presence of earthworms. However, the presence of earthworms did not change the concentrations of metals in plants, except for Cd. In the presence or absence of earthworms, V. faba accumulated higher concentrations of Cu and Zn compared with Z. mays, which accumulated higher concentrations of Cd. These findings have revealed that earthworm activities can modify the availability of heavy metals for uptake by plants in contaminated soils. Moreover, the study results show that the ecological context of phytoremediation should be broadened by considering earthworm-plant-soil interaction, which influence both the health of the plant and the uptake of heavy metals by plants. [less ▲]

Detailed reference viewed: 45 (11 ULg)
Full Text
Peer Reviewed
See detailEarthworms smell microorganisms in soil
Zirbes, Lara ULg; Verheggen, François ULg; Mescher, Mark et al

Poster (2011)

Detailed reference viewed: 42 (3 ULg)
Full Text
Peer Reviewed
See detailEarthworms use odor cues to locate and feed on microorganisms in soil
Zirbes, Lara ULg; Mark, Mescher; Vrancken, Véronique ULg et al

in PLoS ONE (2011), 6(7), 21927

Detailed reference viewed: 60 (13 ULg)
See detailThe EASE Scenario: A New Origin for Metal-Poor Stars?
Jehin, Emmanuel ULg; Magain, Pierre ULg; Noels-Grötsch, Arlette ULg et al

in Weiss, A.; Abell, T.; Hill, V. (Eds.) The First Stars (2000)

We have analysed high resolution and high signal-to-noise spectra of 21 mildly metal-poor stars. The correlations between the relative abundances of 16 elements have been studied, with a special emphasis ... [more ▼]

We have analysed high resolution and high signal-to-noise spectra of 21 mildly metal-poor stars. The correlations between the relative abundances of 16 elements have been studied, with a special emphasis on the neutron-capture ones. This analysis reveals the existence of two sub-populations of field metal-poor stars which differ by the behaviour of the s-process elements versus the alpha and r-process elements. We suggest a scenario for the formation of metal-poor stars, which closely relates the origin of these stars to the evolution of globular clusters. [less ▲]

Detailed reference viewed: 15 (1 ULg)
See detailThe EASE Scenario: Dynamical Study of the Supernova Phase
Parmentier, Geneviève ULg; Jehin, Emannuel; Magain, Pierre ULg et al

in Weiss, A.; Abell, T.; Hill, V. (Eds.) The First Stars (2000)

We revisit the most often encountered argument against self-enrichment in globular clusters, namely the ability of a few number of supernovae to disrupt the proto-globular cloud. We show that, within the ... [more ▼]

We revisit the most often encountered argument against self-enrichment in globular clusters, namely the ability of a few number of supernovae to disrupt the proto-globular cloud. We show that, within the context of the Fall and Rees theory, primordial proto-globular cluster clouds may sustain several hundreds of Type II supernovae. Furthermore, the corresponding self-enrichment level is in agreement with galactic halo globular cluster metallicities. [less ▲]

Detailed reference viewed: 22 (0 ULg)
Full Text
See detailEast African Great Lake Ecosystem Sensitivity to changes final report
Descy, J.-P.; André, L.; Delvaux, C. et al

Report (2015)

Detailed reference viewed: 65 (10 ULg)
See detailEast and West. Identity, Tradition and Modernity : Case of Japan
Goto, Kanako ULg

Scientific conference (2015, November)

Detailed reference viewed: 10 (1 ULg)
Full Text
See detailThe East Asian Financial Crisis 1997-1998
Artige, Lionel ULg

Learning material (2014)

Detailed reference viewed: 34 (3 ULg)
Peer Reviewed
See detailEast Asian Social Enterprises in a Worldwide Perspective
Defourny, Jacques ULg

Conference (2011, April 07)

Detailed reference viewed: 37 (6 ULg)
Full Text
See detailThe East-West Gradient. Differences in Social Capital between Walloon Provinces
Jacquemain, Marc ULg

in Hooghe, Marc (Ed.) Contemporary theoretical perspectives on the study of social cohesion and social capital (2011)

Lorsqu'on étudie les principaux indicateurs de capital social à travers la Wallonie au moyen d'enquêtes quantitatives, il apparaît clairement une différence entre le hainaut et les autres provinces. Le ... [more ▼]

Lorsqu'on étudie les principaux indicateurs de capital social à travers la Wallonie au moyen d'enquêtes quantitatives, il apparaît clairement une différence entre le hainaut et les autres provinces. Le Hainaut semble avoir subi une forte perte de capital social liée à la crise structurelle de ses vieilles industries. C'est aussi le cas pour la province de Liège, mais à une échelle sensiblement moindre. [less ▲]

Detailed reference viewed: 33 (6 ULg)
Full Text
Peer Reviewed
See detailThe eastern dimension of the European neighbourhood policy: practices, instruments and social structures
Korosteleva, Elena A.; Natorski, Michal ULg; Simão, Licínia

in East European Politics (2013), 29(3), 257-272

The European Union (EU) continuingly searches for more effective policy towards its eastern neighbours, which is reflected in the ongoing adaptation of its existing approaches, discourses and policy ... [more ▼]

The European Union (EU) continuingly searches for more effective policy towards its eastern neighbours, which is reflected in the ongoing adaptation of its existing approaches, discourses and policy strategies to the new challenges of its external environment. In order to understand the complexity and limitations of the EU framework under the European neighbourhood policy and the eastern partnership initiative – that is, to consider the interface between policy instruments, institutional structures and multiple agents – one needs to adopt an original analytical perspective of practices to comprehensively assess the policies' outcomes. With this in mind, this issue sets to discern patterns of social practices between the EU and its eastern neighbours, and examine how these relations guide agents' interactions in various policy areas. This introduction outlines the theoretical framework synergising the three fundamental concepts – of practices, policy instruments and social structures – that have predicated research for this issue. It also outlines the structure and main arguments of the individual case-studies which inform the issue's conceptual framework. [less ▲]

Detailed reference viewed: 16 (0 ULg)
Full Text
Peer Reviewed
See detailAn easy and economically viable route for the decoration of carbon nanotubes by magnetite nanoparticles, and their orientation in a magnetic field
Stoffelbach, François; Aqil, Abdelhafid ULg; Jérôme, Christine ULg et al

in Chemical Communications (2005), (36), 4532-4533

A simple, cheap and tunable approach for the decoration of carbon nanotubes by magnetite nanoparticles and their orientation in a magnetic field is reported.

Detailed reference viewed: 38 (4 ULg)
Full Text
Peer Reviewed
See detailAn easy and low-cost method for preprocessing and matching small-scale amateur aerial photography for assessing agricultural land use in Burkina Faso
Wellens, Joost ULg; Midekor, Akoly; Traore, Farid ULg et al

in International Journal of Applied Earth Observation and Geoinformation (2013), 23

In recent decades, the Kou watershed in south-western Burkina Faso has suffered from poor water management. Despite the abundance of water, most water users regularly face water shortages because of the ... [more ▼]

In recent decades, the Kou watershed in south-western Burkina Faso has suffered from poor water management. Despite the abundance of water, most water users regularly face water shortages because of the increase in the amount of land under irrigation. To help them achieve a more equitable allocation of irrigated land, local stakeholders need an easily managed low-cost tool for monitoring and mapping these irrigated zones. The aim of this study was to develop a fast and low-cost procedure for mosaicing and georeferencing amateur small-scale aerial photographs for land-use surveys. Sets of tens (2009) and hundreds (2007) of low-altitude aerial photographs, with a resolution of 0.4 m and 0.8 m, respectively, were used to create a detailed land-cover map of typical African small-scale irrigated agriculture. A commercially available stitching tool and GIS allowed georeferenced ‘mono-images’ to be constructed; both mosaics were warped on a high-resolution SPOT image with a horizontal root mean square error (RMSE) of about 11 m. The RMSE between the two image datasets was 2 m. This approach is less sensitive to atmospheric conditions that are non-predictable in programming satellite imagery. [less ▲]

Detailed reference viewed: 65 (22 ULg)
Full Text
Peer Reviewed
See detailEasy functionalization of amphiphilic poly(ethylene oxide)-b-poly(ε-caprolactone) copolymer micelles with unprotected sugar: synthesis and recognition by lectins
Freichels, Hélène; Auzély-Velty, Rachel; Lecomte, Philippe ULg et al

in Polymer Chemistry (2012), 3(6), 1436-1145

This paper aims at reporting the end-functionalization of a PEO block of an amphiphilic α-acetal-PEO-b-PCL copolymer. The acetal end-group, which is the fragment of the initiator used in the EO ... [more ▼]

This paper aims at reporting the end-functionalization of a PEO block of an amphiphilic α-acetal-PEO-b-PCL copolymer. The acetal end-group, which is the fragment of the initiator used in the EO polymerization, was first hydrolyzed into an aldehyde that was then reacted with an amine by reductive amination reaction in water. This two-step derivatization was carried out in one pot. In a preliminary study a model amine, i.e. fluorescein amine, was used and the impact of the composition, thus of the Hydrophilic–Lipophilic Balance (HLB) of the amphiphilic copolymer, was studied. The experimental conditions were extended to the coupling of an aminated mannose to the diblock copolymer. The frozen micelles formed by the mannosylated copolymer proved to form complexes with various lectins as shown by Surface Plasmon Resonance (SPR) and Isothermal Titration Calorimetry (ITC). [less ▲]

Detailed reference viewed: 47 (11 ULg)
See detailEasy Riders & Raging Bulls : New Hollywood et nouvelles contestations
Tomasovic, Dick ULg

Scientific conference (2010, November 29)

Detailed reference viewed: 37 (8 ULg)
See detailEasy Scapegoats : undocumented immigrants in Europe. Belgina Report
Kagné, Bonaventure; Martiniello, Marco ULg

Report (2000)

Detailed reference viewed: 44 (0 ULg)