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See detailCambiamenti climatici e gestione dei rischi naturali
Ozer, Pierre ULg

Scientific conference (2014, December)

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See detailI “cambiamenti climatici ” e la vulnerabilità: Il caso del Vietnam e del Benin
Ozer, Pierre ULg

Scientific conference (2013, December 03)

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See detailCambiamenti climatici, telerilevamento ed erosione littorale
Ozer, Pierre ULg

Scientific conference (2010, November 10)

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See detailCambio climatico en Ecuador
Perrin, Dominique ULg; Ozer, Pierre ULg

Scientific conference (2016, March 10)

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See detailCambios ambientales del último milenio en sedimentos lacustres del Lago Thompson, Patagonia Chilena Norte
Sacré, Vincent ULg; Fagel, Nathalie ULg; Leclercq, Louis ULg et al

Poster (2012, October 25)

Este estudio se enfoca en un análisis multiproxy de un testigo sedimentario del Lago Thompson (area 1 km2; 751 masl ; 45°38’S 72°47’W) obtenido en 2008 (LT08-E, 130 cm), con el objetivo de documentar la ... [more ▼]

Este estudio se enfoca en un análisis multiproxy de un testigo sedimentario del Lago Thompson (area 1 km2; 751 masl ; 45°38’S 72°47’W) obtenido en 2008 (LT08-E, 130 cm), con el objetivo de documentar la variabilidad climática durante el último milenio en la Patagonia Chilena Norte y su impacto sobre el ambiente. El modelo de datación se basó en cinco fechados de 14C. Los resultados de 210Pb y 137 Cs no permitieron estimar la tasa de sedimentación para la parte superficial del núcleo. El lago Thompson esta caracterizado por una pequeña cuenca de suaves pendientes y sus sedimentos están dominados por limo arcilloso y partículas amorfas (principalmente diatomeas). Esto último es sustentado por la relación atómica de carbono/nitrógeno (C/N) que indica el origen fitoplanctónico del sedimento (8-10). Los perfiles de rayos –X, susceptibilidad magnética y LOI 550ºC evidencian dos depósitos volcánicos en 1410-1440 y 1780-1790 AD. Los perfiles de C/N y sílice biogénica (SiB) sugieren una alta productividad durante un periodo equivalente a la Pequeña Edad del Hielo (1650-1850 AD), con una máxima intensidad durante ~1800 AD. Desde 1850 AD hasta la actualidad, los perfiles de LOI 550ºC y SiB evidencian una reciente eutrofización y aumento del nivel del lago (asociado con aumento de temperaturas y humedad). Además, los perfiles de SiB presentan una correlación inversa con las temperaturas reconstruidas por anillos de árboles en la Patagonia. El contenido de diatomeas es dominado por especies planctónicas (Aulacoseira sp. y Cyclotella sp.), mientras que taxa bentónicos no muestran una buena diversificación en comparación a otros lagos de la Patagonia. La abundancia de diatomeas muestra respuestas específicas a los depósitos volcánicos con una disminución de Aulacoseira sp.. La relación planctónica/bentónica permite identificar dos periodos de alto y bajo nivel del lago coincidiendo con fases húmedas y secas de la Pequeña Edad de Hielo (1200-1650 y 1650-1850 AD). La realización de análisis sedimentológicos, geoquímicos y de microfósiles permitiría una mejor caracterización de los modelos de depositación del sedimento (impregnación del núcleo sedimentario) y de la interacción entre depósitos volcánicos y diatomeas. Agradecimientos a Fondecyt Nº1070508, FNRS 1360 2007-2010 y ULg CFRA 1060 2009-2010. [less ▲]

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See detailCambios en la participación política de los inmigrantes en la región de Bruselas capital. Elecciones de octubre de 2000
Martiniello, Marco ULg; Jacobs, Dirk; Rea, Andrea

in Revista Migraciones (2002), 11

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See detailCambios y constantes en la narrativa del Subcomandante Marcos: De los relatos a la novela Muertos incómodos (falta lo que falta)
Vanden Berghe, Kristine ULg

in Mexican Studies (2007), 23(2), 387-408

An analysis of the discourse of Muertos incómodos (2005), written by Subcomandante Marcos and Paco Ignacio Taibo II, shows some outstanding differences between this novel and the stories that Marcos wrote ... [more ▼]

An analysis of the discourse of Muertos incómodos (2005), written by Subcomandante Marcos and Paco Ignacio Taibo II, shows some outstanding differences between this novel and the stories that Marcos wrote before, Don Durito and el Viejo Antonio. These differences seem to implicate a change of priorities in the political agenda of this guerrilla fighter. In the first place, the Ecological aspect in the discourse of Marcos is strengthen. Then, it is worth noting that the subaltern characters in the novel now are distinguished more in terms in gender rather than by their ethnicity. Finally, the self portrait of Marcos as the bearer of history is in the antithesis of his earlier portraits, which always emphasized his subordinate role in relation to Indigenous people. But the most radical change is that with his openly ideological discourse structure, Marcos seems to abandon his previous critical discourse which he emphasized as a sign of difference of EZLN [The Zapatista National Liberation [less ▲]

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See detailCambodian peasant’s contribution to rural development: a perspective from Kampong Thom Province
Diepart, Jean-Christophe ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2010), 14(2), 321-340

The paper aims to identify the rationality of peasant communities and their contribution to rural development in Kampong Thom province. To do so, an interdisciplinary analytical framework addresses the ... [more ▼]

The paper aims to identify the rationality of peasant communities and their contribution to rural development in Kampong Thom province. To do so, an interdisciplinary analytical framework addresses the dynamics of land use and land tenure, the strategies of labor force allocation as well as the determinants of land and labor agricultural productivities amongst peasant communities. It rests on details field surveys in two communes located in very distinct agro-ecological settings of Kampong Thom province. A land use change analysis based on time-series aerial photos is conducted with participatory inventories of natural resources. It shows that endogenous management of forest and fisheries resources generate significant incomes and, at the same time, contribute to maintaining biodiversity. The paper analyses how this contribution is challenged by the non-peasant actors involved in massive State land privatization. Aiming to full employment, peasant households enjoy a great flexibility in the way they allocate labor force, especially in line with the age of active labor and the fluctuation of labor opportunity costs. Principally due to an unequal land holding distribution, agricultural income is unfairly distributed but this inequality is actually balanced by the access to common-pool resources of crucial importance for the poorest and by the recourse to non farming activities, which is an important factor of socio-economic differentiation amongst households. The main economic indicators of rice production confirm that peasant households always try to maximize their income in step with the production factor they have in relatively less amount. A land market simulation stresses that, contrarily to theoretical assumptions, land access through sale (and purchase) does not result in a fairer land distribution. Nevertheless, land leases amongst peasant households seem more promising to ensure equitable access to land as they are embedded in collective security mechanisms activated by peasantry. The paper argues that peasant communities in the studied area constitute a solid basis for rural development as they offer a very good articulation between economic efficiency, social justice and environmental sustainability. Finally, recommendations are formulated to properly address peasant contribution to rural development in the new national agrarian policies. [less ▲]

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See detailCambron Jean-Luc
Tomasovic, Dick ULg

in Moins, Philippe (Ed.) Image par image, le cinéma d’animation en communauté Wallonie-Bruxelles (2001)

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See detailCamel Trekking for non motile bacteria
Rigali, Sébastien ULg

Conference (2011)

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See detailA camelid antibody fragment inhibits the formation of amyloid fibrils by human lysozyme
Dumoulin, Mireille ULg; Last, A. M.; Desmyter, A. et al

in Nature (2003), 424(6950), 783-788

Amyloid diseases are characterized by an aberrant assembly of a specific protein or protein fragment into fibrils and plaques that are deposited in various organs and tissues(1-3), often with serious ... [more ▼]

Amyloid diseases are characterized by an aberrant assembly of a specific protein or protein fragment into fibrils and plaques that are deposited in various organs and tissues(1-3), often with serious pathological consequences. Non-neuropathic systemic amyloidosis (4-6) is associated with single point mutations in the gene coding for human lysozyme. Here we report that a single-domain fragment of a camelid antibody(7-9) raised against wild-type human lysozyme inhibits the in vitro aggregation of its amyloidogenic variant, D67H. Our structural studies reveal that the epitope includes neither the site of mutation nor most residues in the region of the protein structure that is destabilized by the mutation. Instead, the binding of the antibody fragment achieves its effect by restoring the structural cooperativity characteristic of the wild-type protein. This appears to occur at least in part through the transmission of long-range conformational effects to the interface between the two structural domains of the protein. Thus, reducing the ability of an amyloidogenic protein to form partly unfolded species can be an effective method of preventing its aggregation, suggesting approaches to the rational design of therapeutic agents directed against protein deposition diseases. [less ▲]

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See detailCamelid single-domain antibody fragments as structural probes to study the mechanism of human lysozyme fibrils formation
Dumont, Janice ULg; Pardon, Els; Menzer, Linda ULg et al

Poster (2010)

Six variants of human lysozyme (single-point mutations I56T, F57I, W64R, D67H and double mutations F57I/T70N, W112R/T70N) are associated with a hereditary non-neuropathic systemic amyloidosis. These ... [more ▼]

Six variants of human lysozyme (single-point mutations I56T, F57I, W64R, D67H and double mutations F57I/T70N, W112R/T70N) are associated with a hereditary non-neuropathic systemic amyloidosis. These proteins form extracellular amyloid fibrils that deposit in a wide range of tissues and organs such as liver, spleen and kidneys where they cause damages [1]. It was shown that the D67H and I56T mutations cause a loss in stability and more particularly a loss of global cooperativity of protein [1]. Consequently, under physiologically relevant conditions, these variants can transiently populate a partially unfolded state in which the beta-domain and the C-helix are cooperatively unfolded while the rest of the protein remains native like [1]. The formation of intermolecular interactions between the regions that are unfolded in this intermediate state is likely to be a fundamental trigger of the aggregation process that ultimately leads to the formation and deposition of fibrils in tissues. The binding of three variable domain of camelid antibodies – also named nanobodies - (cAb-HuL 6 [2], cAb-HuL 5 and cAb-HuL 22 [3]) raised against the wild type human lysozyme inhibit in vitro the formation of amyloid fibrils by the lysozyme variants. These three nanobodies bind on different regions of lysozyme and act as amyloid fibrils inhibitor through different mechanisms. On one hand, cAb-HuL 6 and cAb-HuL 22 stabilize the native state of the lysozyme variants thus restoring the global cooperativity characteristic of the wild-type protein. On the other, cAb-HuL 5 probably acts by binding soluble prefibrillar aggregates. In the present work, sixteen other nanobodies specific of human lysozyme have been generated. Competition experiments have shown that they bind to five non overlapping epitopes. The effects of the binding of these nanobodies on the stability of the D67H variant of human lysozyme and on its aggregation into amyloid fibrils will be discussed. References [1] Dumoulin et al, (2006) Acc. Chem. Res, 39, 603-610. [2] Dumoulin et al, (2003) Nature, 424, 783-788. [3] Chan et al. (2008) Biochemistry, 47,11041-11054. [less ▲]

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See detailCamelpox virus encodes a schlafen-like protein that affects orthopoxvirus virulence.
Gubser, Caroline; Goodbody, Rory; Ecker, Andrea et al

in Journal of General Virology (The) (2007), 88(Pt 6), 1667-76

Camelpox virus (CMLV) gene 176R encodes a protein with sequence similarity to murine schlafen (m-slfn) proteins. In vivo, short and long members of the m-slfn family inhibited T-cell development, whereas ... [more ▼]

Camelpox virus (CMLV) gene 176R encodes a protein with sequence similarity to murine schlafen (m-slfn) proteins. In vivo, short and long members of the m-slfn family inhibited T-cell development, whereas in vitro, only short m-slfns caused arrest of fibroblast growth. CMLV 176 protein (v-slfn) is most closely related to short m-slfns; however, when expressed stably in mammalian cells, v-slfn did not inhibit cell growth. v-slfn is a predominantly cytoplasmic 57 kDa protein that is expressed throughout infection. Several other orthopoxviruses encode v-slfn proteins, but the v-slfn gene is fragmented in all sequenced variola virus and vaccinia virus (VACV) strains. Consistent with this, all 16 VACV strains tested do not express a v-slfn detected by polyclonal serum raised against the CMLV protein. In the absence of a small animal model to study CMLV pathogenesis, the contribution of CMLV v-slfn to orthopoxvirus virulence was studied via its expression in an attenuated strain of VACV. Recombinant viruses expressing wild-type v-slfn or v-slfn tagged at its C terminus with a haemagglutinin (HA) epitope were less virulent than control viruses. However, a virus expressing v-slfn tagged with the HA epitope at its N terminus had similar virulence to controls, implying that the N terminus has an important function. A greater recruitment of lymphocytes into infected lung tissue was observed in the presence of wild-type v-slfn but, interestingly, these cells were less activated. Thus, v-slfn is an orthopoxvirus virulence factor that affects the host immune response to infection. [less ▲]

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See detailLa caméra et l'ouvrier: des "Sorties d'usine" à "Oeil/Machine III"
Hamers, Jérémy ULg

Conference (2012, July 13)

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See detailCamera obscura : de Dantès à Monte-Cristo
Durand, Pascal ULg

Conference given outside the academic context (2011)

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See detailCamera-etc. L'abécédaire
Tomasovic, Dick ULg

Book published by Camera-etc / Vervinckt (2010)

Founded in Liege in 1979, Camera-etc holds a important place in the fields of education with the media and animation. This book draws up the portrait of this workshop pioneer and singular, opened and ... [more ▼]

Founded in Liege in 1979, Camera-etc holds a important place in the fields of education with the media and animation. This book draws up the portrait of this workshop pioneer and singular, opened and engaged and, in more than one way, experimental. [less ▲]

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See detailCaméras 3D et plantes numériques : vers une automatisation de l’agriculture
Bouvry, Arnaud ULg; Stalport, Benoît ULg; De Cock, Nicolas ULg et al

Diverse speeche and writing (2017)

En cours de développement à la Faculté de Gembloux Agro-Bio Tech, l’exploitation d’images en 3 dimensions de plantes permet de récolter une grande quantité de données. Cette technique, couplée à un ... [more ▼]

En cours de développement à la Faculté de Gembloux Agro-Bio Tech, l’exploitation d’images en 3 dimensions de plantes permet de récolter une grande quantité de données. Cette technique, couplée à un système mathématique de modélisation de plantes, utilisé notamment par Pixar, offre de nombreuses possibilités pour la recherche scientifique. [less ▲]