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See detailAn Eco-friendly Soft Template Synthesis of Mesostructured Silica-Carbon Nanocomposites for Acid Catalysis
Zhong, Ruyi; Peng, Li; de Clippel, P et al

in ChemCatChem (2015), 7

The synthesis of ordered mesoporous silica-carbon composites was explored by employing TEOS and sucrose as the silica and carbon precursor respectively, and the triblock copolymer F127 as a structure ... [more ▼]

The synthesis of ordered mesoporous silica-carbon composites was explored by employing TEOS and sucrose as the silica and carbon precursor respectively, and the triblock copolymer F127 as a structure-directing agent via an evaporation-induced self assembly (EISA) process. It is demonstrated that the synthesis procedures allow for control of the textural properties and final composition of these silica-carbon nano composites via adjustment of the effective SiO2/C weight ratio. Characterization by SAXS, N2 physisorption, HRTEM, TGA, and 13C and 29Si solid-state MAS NMR show a 2D hexagonal mesostructure with uniform large pore size ranging from 5.2 to 7.6 nm, comprising of separate carbon phases in a continuous silica phase. Ordered mesoporous silica and non-ordered porous carbon can be obtained by combustion of the pyrolyzed nano composites in air or etching with HF solution, respectively. Sulfonic acid groups can be readily introduced to such kind of silica-carbon nanocomposites by a standard sulfonation procedure with concentrated sulfuric acid. Excellent acid-catalytic activities and selectivities for the dimerization of styrene to produce 1,3-diphenyl-1-butene and dimerization of a-methylstyrene to unsaturated dimers were demonstrated with the sulfonated materials. [less ▲]

Detailed reference viewed: 263 (7 ULg)
See detailThe eco-neighborhoods, an alternative to urban sprawl?
Halleux, Jean-Marie ULg

Conference (2012, May 10)

Detailed reference viewed: 19 (2 ULg)
See detailEco-quartiers : avec la ville ou contre la ville ?
Ruelle, Christine ULg; Marique, Anne-Françoise ULg

Conference given outside the academic context (2014)

Detailed reference viewed: 27 (2 ULg)
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See detailLes éco-quartiers : vers la généralisation d'une alternative à l'étalement urbain ?
Halleux, Jean-Marie ULg; Strée, Julie ULg

in Harismendy, P.; Gaudin, S. (Eds.) Habitat social, habitat durable ? (2012)

Il existe de nombreuses formes de blocages susceptibles de limiter la reproductibilité des expériences d’éco-quartiers, par exemple en termes de maîtrise foncière ou par la nécessité pour des acteurs de ... [more ▼]

Il existe de nombreuses formes de blocages susceptibles de limiter la reproductibilité des expériences d’éco-quartiers, par exemple en termes de maîtrise foncière ou par la nécessité pour des acteurs de la construction de sortir de leurs démarches traditionnelles. Notre recherche s’est focalisée sur un aspect à la fois partiel et essentiel de la problématique, en l’occurrence les préférences résidentielles. Nous avons, pour ce faire, réalisé une enquête sur le potentiel commercial de la formule de l’éco-quartier. Cette enquête, conduite par la méthode de l’évaluation contingente, s’est focalisée sur les ménages qui alimentent le peuplement des banlieues périurbaines. Pour le contexte investigué - la Wallonie - et pour le proche futur, il ressort de l'enquête que l’éco-quartier ne va pas conduire à des effets significatifs sur l’endiguement de la périurbanisation. Répondre par la négative quant à la possibilité d’endiguer l’étalement urbain par la multiplication des projets d’éco-quartiers ne signifie pas pour autant que cette formule ne puisse pas jouer un rôle significatif dans la production immobilière future. Si l’on cherche à donner une estimation crédible quant à la demande susceptible de choisir la formule de l’éco-quartier plutôt que la formule du lotissement périurbain, nos résultats poussent à avancer l’ordre de grandeur des 10 %. [less ▲]

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See detailEco-toxicological analysis of free-ranging cetaceans from the North-western Mediterranean Sea
Pinzone, Marianna ULg; Ody, Denis; Lepoint, Gilles ULg et al

Conference (2015, March 25)

The numerous anthropogenic activities occurring nowadays in the North-western Mediterranean Sea strongly affect top predators such as marine mammals, especially through the bioaccumulation of lipophilic ... [more ▼]

The numerous anthropogenic activities occurring nowadays in the North-western Mediterranean Sea strongly affect top predators such as marine mammals, especially through the bioaccumulation of lipophilic contaminants. In order to assess the eco-toxicological status of local living cetaceans blubber biopsies were collected between 2006 and 2013. Selected persistent organic pollutants POPs (31PCBs, 15 organochlorine compounds, 9 PBDEs and 17 PCDD/Fs) were analyzed in 49 long-finned pilot whales Globicephala melas, 61 sperm whales Physeter macrocephalus and 70 fin whales Balaenoptera physalus. δ13C, δ15N values and POPs levels were assessed through IR-MS and GC-MS respectively. To assess the toxic potency of the dioxin-like compounds, the TEQ approach was applied. δ15N values were 12.2±1.3‰ for sperm whales, 10.5±0.7‰ for pilot whales and 7.7±0.8‰ in fin whales, positioning sperm whales at higher trophic levels. δ13C instead was similar and amounted to −17.3±0.4‰, −17.8±0.3‰ and −18.7±0.4‰ respectively. Pilot whales presented higher concentrations than sperm whales for ΣPCBs (38666±25731ng.g-1 lw and 22849±15566ng.g-1 lw respectively), ΣPBDEs (712±412ng.g-1 lw and 347±173ng.g-1 lw respectively) and ΣDDTs (46081±37506ng.g-1 lw and 37647±38518ng.g-1 lw respectively). Fin whales presented the lowest values, in accordance with its trophic position (ΣPCBs: 5721±5180ng.g-1 lw, ΣPBDEs: 177±208ng.g-1 lw and ΣDDTs: 6643±5549ng.g-1 lw). The PCA analysis confirmed how p,p’DDT and p,p’DDE were influential in differentiating the species, as a consequence of their migratory behavior and distribution. Pollutant concentrations were significantly higher than both their Southern Hemisphere and North Atlantic counterparts, possibly due to the particular Mediterranean geomorphology, which influences pollutants distribution and recycle. Dioxin-like  PCBs accounted for over 80% of the total TEQ. This study demonstrated (1) an important exposure to pollutants of Mediterranean toothed-whales, often surpassing the estimated threshold toxicity value of 17000ng.g−1 lw for blubber in marine mammals; and (2) how their geographical distribution can influence the pollutants profile and concentrations. [less ▲]

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See detailEco-zonings : compte-rendu de la recherche CPDT 2009-2010
Van Der Kaa, Claire ULg

Conference (2010, November 09)

Dans le cadre d'une recherche exploratoire, le concept d'éco-zoning est encadré par comparaison à des concepts similaires présents dans la littérature, des études de cas et des rencontres avec les parties ... [more ▼]

Dans le cadre d'une recherche exploratoire, le concept d'éco-zoning est encadré par comparaison à des concepts similaires présents dans la littérature, des études de cas et des rencontres avec les parties prenantes. puis une définition en est formulée. La mise en oeuvre coordonnée de mesures d'aménagement et d'urbanisme, de management environnemental et d'écologie industrielle est préconisée pour contribuer à une plus grande durabilité des zones d'activité économique. Une structure d'évaluation des zones d'activité économique est élaborée. [less ▲]

Detailed reference viewed: 81 (11 ULg)
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See detailEcobilan azoté et émission de vapeur d'eau lors d'élevage de porcelets sevrés sur litière accumulée de sciure
Nicks, Baudouin ULg; Vandenheede, Marc ULg; Desiron, Alain et al

in compte rendu du cinquième carrefour des productions animales "quels systèmes de productions animales pour le 21è siècle?" (2000)

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See detailL'écobilan de l'exploitation agricole
Debouche, Charles ULg; Lambin, Jean

Conference (2002, June)

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See detailL'écobilan de l'exploitation agricole
Debouche, Charles ULg

Scientific conference (2000, October 16)

Detailed reference viewed: 22 (0 ULg)
See detailEcobilan de l'exploitation agricole: Manuel d'utilisation
Debouche, Charles ULg; Lambin, Jean

Report (1999)

Detailed reference viewed: 30 (0 ULg)
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See detailEcoFerme: un logiciel d'évaluation environnementale de l'exploitation agricole
Debouche, Charles ULg

in Les Nouvelles de l'été (2003), (3e trimetre), 14-15

Detailed reference viewed: 33 (2 ULg)
See detailEcofunctional biodiversity of benthic crustacean taxocoenoses in the Southern Ocean (Belgian Scientific Programme on the Antarctic, Phase IV)
De Broyer, Claude; Scailteur, Yves; Van Roozendael, Francoise et al

Report (1999)

Detailed reference viewed: 9 (0 ULg)
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See detailEcogeographical variation of body size in the newt Triturus carnifex: comparing the hypotheses using an information-theoretic approach
Ficetola, Gentile Francesco; Scali, Stefano; Denoël, Mathieu ULg et al

in Global Ecology & Biogeography (2010), 19(4), 485-495

Aim. Ecogeographical body size variation in vertebrates (e.g., Bergmann’s rule) has long been recognized. However, the patterns and causes of intraspecific ecogeographical body size variation in ... [more ▼]

Aim. Ecogeographical body size variation in vertebrates (e.g., Bergmann’s rule) has long been recognized. However, the patterns and causes of intraspecific ecogeographical body size variation in ectotherms, and in amphibians in particular, are strongly debated. We identified the relationship between bioclimatic variables and body size predicted a priori by alternative hypotheses (heat balance; endurance, seasonality, starvation resistance, water availability; primary productivity, parental investment) proposed to explain ecogeographical patterns of body size in ectotherms, and we evaluated the relative support of these hypotheses in explaining body size variation of the Italian crested newt, Triturus carnifex. Location Twenty-three populations covering the whole range of T. carnifex (Austria, Croatia, Italy and Slovenia) Methods. We obtained data on body size (SVL) of 2639 adult newts from direct measurements and the literature; we obtained high resolution environmental data for the sampled localities. We used an information-theoretic approach to evaluate the support of the different hypotheses, by the data. We also integrated information on population genetics in our models. Results. We observed strong geographic variation of body size. The best AIC models showed that populations with larger body size are associated with cold climates and secondarily with high primary productivity. Furthermore, sexual dimorphism increases in cold climates, as the increase in body size was stronger for females. When taking into account population genetics, we did not find support for relationships with the other variables. Main conclusion. Our results are consistent with three hypotheses proposed to explain ecogeographic variation in amphibians: heat balance, increased parental investment of females and productivity. Information theory provides the framework for comparing hypotheses rather than looking for patterns. We suggest that evaluating the support of mechanisms can provide better insights than simply assessing whether ecogeographical variation is in agreement with some ‘rule’. [less ▲]

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See detailEcogeography, demography, diversity and conservation of Phaseolus lunatus L. in the Central Valley of Costa Rica.
Baudoin, Jean-Pierre ULg; Rocha, O.; Degreef, J. et al

Book published by International Plant Genetic Resources Institute (IPGRI) (2004)

Detailed reference viewed: 29 (1 ULg)
See detailEcografia addominale del cane e del gatto
Busoni, Valeria ULg

Book published by Poletto Editore (2003)

The book is a short practical manual on abdominal ultrasound in the dog and cat. It is written in italian and it is addressed to veterinary practicionners and veterinary students. More than 150 images ... [more ▼]

The book is a short practical manual on abdominal ultrasound in the dog and cat. It is written in italian and it is addressed to veterinary practicionners and veterinary students. More than 150 images illustrates the book. Anatomical details, ultrasound technique, ultrasound anatomy and most common abnormal findings anre treated and illustrated for all the abdominal organs including big vessels and lymphnodes. A prectical table to be used in patients afffected by abdominal neoplasia describes lymphnode drainage of the main abdominal organs. Interventional ultrasound-guided procedures are also described and their main avdantages and complications are quoted. [less ▲]

Detailed reference viewed: 110 (1 ULg)
See detailEcografia del nodello: tecnica, immagini normali e patologiche.
Busoni, Valeria ULg

Conference (2000)

Detailed reference viewed: 51 (2 ULg)