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See detailSur la dialectique, Derrida
Caeymaex, Florence ULg

Conference (2015, December 17)

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See detailNovel organocobalt based on acetylacetonate ligands for the precision synthesis of telechelic polymers
Demarteau, Jérémy ULg; Cordella, Daniela ULg; Kermagoret, Anthony et al

Conference (2015, December 17)

Organocobalt(III) with acetylacetonate ligands is the most representative example of R-Co bearing a weak C-Co bond that can release alkyl radicals under mild experimental conditions without requiring a ... [more ▼]

Organocobalt(III) with acetylacetonate ligands is the most representative example of R-Co bearing a weak C-Co bond that can release alkyl radicals under mild experimental conditions without requiring a photoactivation. The unique isolated specimen is a short oligo(vinyl acetate) end-capped by Co(acac)2. The high lability of the C-Co bond of this R-Co combined to the unique capacity of Co(acac)2 to reversibly trap alkyl radicals make this organocobalt unique for the precision synthesis of unprecedented polymers by the so-called Cobalt-Mediated Radical Polymerization (CMRP) technique. The growth of unstabilized and highly reactive growing radicals formed by the addition of R· to unconjugated olefins (vinyl esters, vinyl amides, vinyl imidazolium, vinyl chloride, ethylene) is controlled by the reversible formation of a weak C-Co bond at the polymer chain end. The lack of alternatives to this R-Co, especially to the structure of the alkyl group, has placed limitations on further innovation in (macro)molecular design. Other functional variants that would enable attractive chain-end derivatizations are unfortunately not available. In this communication, we will address this important challenge by describing an innovative synthetic route towards the preparation of a new functional R-Co(acac)2 that are characterized by a weak C-Co bond. We will report the conditions required for initiating and controlling the radical polymerization of various monomers from these R-Co. We will also demonstrate their utility for the production of novel telechelic polymers under mild experimental conditions, syntheses that can be carried out in water. [less ▲]

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See detailSteam Explosion Process
Jacquet, Nicolas ULg; Haubruge, Eric ULg; Richel, Aurore ULg

Scientific conference (2015, December 17)

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See detailUnderwater silence world: the end of the dogma
Parmentier, Eric ULg

Conference (2015, December 17)

Passive acoustics can offer inexpensive, non-invasive and no-destructive means of assessing temporal and spatial patterns in the distribution of individuals engaging in calling. In marine environments ... [more ▼]

Passive acoustics can offer inexpensive, non-invasive and no-destructive means of assessing temporal and spatial patterns in the distribution of individuals engaging in calling. In marine environments, passive acoustic recording methods can be used at depths not accessible to humans, independent of weather conditions, and for a long term. However, these studies have often restricted their investigations to the monitoring of one or two aquatic species. One reason of this loss of information is quite easy to explain: most of the sounds can be detected but cannot be identified. In many families, calling abilities are described in one or two species only although the descriptions of sound producing mechanisms have highlighted other members should be able to make sounds. Since 50 years, sounds were for example described in more or less 40 pomacentrid species but all the 392 species should be able to make sounds. This situation can be more complicated since some species are able to make different kinds of sounds according to the behavioural context. Some call characteristics can also be modulated according to the size in some species only. It shows an important amount of work has to be done to be able to understand the reef soundscape and to develop call recognition software system. [less ▲]

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See detailIndiana Jones sur Mars
Stiepen, Arnaud ULg

Scientific conference (2015, December 17)

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See detailLa Province de Luxembourg : particularité, histoire et avenir
Grandjean, Geoffrey ULg; Nothomb, Charles-Ferdinand

Conference given outside the academic context (2015)

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See detailToits potagers, bonus immobilier
Jijakli, Haissam ULg

Article for general public (2015)

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See detailTranscriptomic analysis of pancreatic cells in zebrafish
Tarifeño Saldivia, Estefanía ULg

Doctoral thesis (2015)

Pancreas is a mixed gland composed of endocrine and exocrine tissues and plays a crucial role in the metabolism of all vertebrates. The endocrine cells are mainly grouped into the islets of Langerhans and ... [more ▼]

Pancreas is a mixed gland composed of endocrine and exocrine tissues and plays a crucial role in the metabolism of all vertebrates. The endocrine cells are mainly grouped into the islets of Langerhans and secrete distinct hormones, such as glucagon (α-cell), insulin (β-cell), somatostatin (δ-cell) and ghrelin (ε-cell). Diabetes occurs when insulin production by the β-cells is unable to counteract increase of glycemia. The goal of the first part of my thesis was to determine the transcriptomic signatures of each pancreatic cell type in zebrafish in order to identify novel cell type-specific regulatory genes that might be crucial for their differentiation and/or physiology. Pancreatic acinar cells, ductal cells as well as the endocrine α-, β- and δ-cells were isolated from different transgenic adult zebrafish using FACS and RNA-seq was performed from these highly purified cell types. Comparison between the RNA-seq datasets allowed us to highlight all genes (protein coding and non-coding genes) with enriched expression in each cell type and to identify new markers of the mature pancreatic cells in zebrafish. In order to establish the expression blueprint of pancreatic endocrine and exocrine cells conserved from fish to mammals, we compared the pancreatic transcriptomes from zebrafish, mouse and human. Using pancreatic RNA-seq data available in databases, we determined the set of genes displaying enriched expression in endocrine and exocrine cells of human and mouse. Comparison of these data with the zebrafish pancreatic endocrine and exocrine data revealed the genes with conserved expression among vertebrates. Most of the transcription factors previously known to be important for pancreatic cell differentiation are included in this set of conserved genes. This interspecies comparative analysis highlighted genes with evolutionary conserved expression whose pancreatic function is still unknown, but also revealed striking differences in gene expression patterns between species. The goal of the second part of my thesis was to understand the global transcriptional change produced by the loss-of-function of pax6b in pancreatic endocrine cells during pancreas development in zebrafish. We performed RNA-seq from purified pancreatic endocrine cells from wild-type and mutant (pax6b sa0086 null allele) zebrafish embryos at 27 hpf. By comparing the transcriptome of wild-type and mutant endocrine cells, we identified thousands of genes differentially expressed. Notably, we observed that the expression level of the pancreatic hormones was affected as it was reported in murine models. These analyses have revealed the transcriptional network regulated by pax6b in endocrine cells during differentiation. These analyses highlighted many unknown pax6b targets and novel regulators possibly involved in pancreatic function. Future functional analyses will be needed to further investigate the function of the novel regulators identified by this study. [less ▲]

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See detailEcologie et connaissances ethnozoologiques de quelques espèces d'oiseaux gibiers menaces des ecosytèmes du Sud du Bénin
Lougbegnon, Olou Toussaint ULg

Doctoral thesis (2015)

The natural areas of the south of Benin under subequatorial climate are diversified in resident birds’ species as well as migratory one. Some of them are hunted for food and therapeutic purposes by ... [more ▼]

The natural areas of the south of Benin under subequatorial climate are diversified in resident birds’ species as well as migratory one. Some of them are hunted for food and therapeutic purposes by grassroots communities. The most used are Guttera pucherani, Dendrocygna viduata, Egretta alba, Egretta ardesiaca, Porphyrio alleni et Porphyrio porphyrio. In order to reduce pressure on biodiversity in this part of Benin and to implement the sustainable conservation of birds’ species, this study on ecology and ethno-zoological knowledge of hunted bird species was carried out in the forest areas and the Ramsar sites 1017 and 1018. Field prospections were conducted from 2009 to 2012. The birds’ inventory method used was based on listening point techniques of 15 minutes. Data analysis were analyzed through the computation of bird species abundances, the establishment of maps distribution of the species, the habitat description and the modeling of the climatic niche of these species under climatic models CCCMA (Canadian Centre for Climate Modeling and Analysis) and CSIRO (Commonwealth Scientific and Industrial Research Organization) using MAXENT3.3.2. The ethno-zoological knowledge of the birds species were assessed through individual and groups survey and allowed to calculate the use values of the different part of the birds’ species according to the socio-cultural groups, sex and age. Moreover a logistic binary regression was carried out to determine the socio-economic factors which affect bird species exploitation by the grassroots communities. Results of modeling showed that among the variables selected for the prediction of the climatic models, distance from river, altitude appeared as the environmental variable which more contributed to the prediction of the models (with an average of 74.32 % and 12.94%). Projection under CCCMA and CSIRO in 2050, showed a progression of the favorable areas to Dendrocygna viduata, Porphyrio alleni, Porphyrio alleni, Egretta ardesiaca while it showed a regression of the favorable areas to Egretta alba. The estimated uses values showed that the ethno-zoological knowledge on the bird species differed according to the ethnic groups. Birds are used for food, medicinal and magico-mystics purposes. The magico-mystics and food were the most frequent used categories. Homogeneity of knowledge was found among the informants regarding the ethnic group as well as for the sex with respectively 0.66 and 0.7 for the use diversity value (ID) and use equitability value (IE). No significant difference was found between the informant for the use diversity value (ID) and use equitability value (IE). This study helps to build a database on 6 birds’ species and can be used for bird game ranching and game farming in Benin. [less ▲]

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See detailLes débuts du Gravettien dans le Nord-Ouest de l'Europe (28.000 - 26.000 BP)
Touzé, Olivier ULg

Scientific conference (2015, December 16)

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See detailScène d'énonciation et posture d'auteur: la mise en scène de soi dans la critique littéraire de Baudelaire
Mogollon Zapata, Juan Manuel ULg

Doctoral thesis (2015)

Il y aurait un Baudelaire réaliste, un décadent, un classique, un catholique, un révolutionnaire, un réactionnaire et même un postmoderne. Les images attribuées à l’auteur se superposent selon l’époque ... [more ▼]

Il y aurait un Baudelaire réaliste, un décadent, un classique, un catholique, un révolutionnaire, un réactionnaire et même un postmoderne. Les images attribuées à l’auteur se superposent selon l’époque, le lieu et les courants esthétiques et politiques dans lesquels il a été lu. Mais quelle image Baudelaire construit-il de lui-même dans ses textes critiques ? Comment s’y présente-t-il à son public ? Pour mieux cerner le visage littéraire de cette figure changeante et paradoxale, l’étude proposée ici cherche à démontrer qu’il existe bel et bien dans la critique littéraire de Baudelaire un travail de mise en scène de soi qui ne peut se comprendre qu’à partir des diverses scènes d’énonciation que le poète-critique a capitalisées tout au long de sa carrière. Cela soulève la question de la relation entre, d’un côté, la présentation de soi et la scène de parole dans laquelle elle s’inscrit et qu’elle aide à construire, et de l’autre, entre cette mise en scène discursive de soi et les stratégies de positionnement de l’auteur à l’intérieur du champ littéraire. Dans quelle mesure ce travail de présentation de soi est-il redevable de la "situation de discours" dans laquelle il s’énonce ? Et, corollairement, dans quelle mesure relève-t-il d’une stratégie de positionnement littéraire ? Dès que l’on constate que le choix d’une posture, ou de diverses postures au fil du temps, est à la fois lié à une scène d’énonciation, à une étape socioprofessionnelle et à un répertoire de rôles et de modèles prêts à être investis, on entre dans la logique de construction d’une œuvre, mais aussi d’une identité littéraire. [less ▲]

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See detailHistoire et actualité de l'"irrédentisme" français en Belgique francophone
Lanneau, Catherine ULg

Conference (2015, December 16)

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See detailLe vécu des femmes magistrates en Belgique francophone. Analyse d'une profession sous l'angle des rapports sociaux de sexe. Représentativité, profils et pouvoir
Cornet, Adeline ULg

Doctoral thesis (2015)

Sachant qu’historiquement l’exercice de la Justice a été réservé aux hommes, et que les femmes n'ont accès, en Belgique, que depuis un peu moins de 70 ans à la magistrature ; la question centrale de cette ... [more ▼]

Sachant qu’historiquement l’exercice de la Justice a été réservé aux hommes, et que les femmes n'ont accès, en Belgique, que depuis un peu moins de 70 ans à la magistrature ; la question centrale de cette recherche doctorale s’attache à étudier l’impact de l’arrivée des femmes dans la magistrature et de leur exercice de cette fonction régalienne et de pouvoir, ainsi que de leur vécu personnel et professionnel. Choix a été fait d’aborder cette question centrale suivant une méthodologie qualitative et l’utilisation de récits de vie ; et les résultats obtenus y répondent à travers trois grands axes analytiques pouvant être résumés en trois questions : 1/ Combien sont ces magistrates et « où sont-elles » ? Quelle a été l'évolution numérique des femmes dans la magistrature au cours du temps ? Quels postes et quelles fonctions occupent-elles ? 2/ Qui sont les magistrates et comment se définissent-elles ? Quels sont leurs profils et leurs trajectoires professionnelles ? Quel sens, quelles significations donnent les magistrates à leur profession et à la place qu'elle tient dans leur vie ? Quel est leur vécu ? 3/ Quelle vision ont les magistrates du pouvoir ? Et comment se positionnent-elles face à cet attribut central de leur profession ? Ces analyses, réalisées à travers la comparaison des parcours et vécus des quarante-neuf magistrates interrogées, se veulent être une première étude de genre de cette profession visant à connaître qui sont ces magistrates, la place qu'elles occupent dans la profession, la manière dont elles l'envisagent et lui donnent sens. [less ▲]

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See detailMigrations, minorités et super-diversité : les grands enjeux
Martiniello, Marco ULg

Conference given outside the academic context (2015)

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See detailLa croissance : stop ou encore ?
Artige, Lionel ULg

Conference given outside the academic context (2015)

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See detailLa construction d’un soft power chinois en Afrique et en Amérique latine
Wintgens, Sophie ULg

Scientific conference (2015, December 16)

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See detailLes enjeux diplomatiques de l’unification allemande de 1870-71
Brüll, Christoph ULg

Conference given outside the academic context (2015)

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See detailAnalysis of the adoption of the passion fruit (Passflora Edulis) in farming systems, Matongo Burundi
Bashangwa Mpozi, Bosco ULg; Musabanganji, Edouard ULg; Ndimanya, Patrice et al

in Poljoprivreda i Sumarstvo = Agriculture and Forestry (2015), 61(4), 117-124

The commercial potential of passion fruit is expanding as demand for both fresh fruit and processed juice is increasing in Burundi. Due to the current situation with an unstable market of traditional ... [more ▼]

The commercial potential of passion fruit is expanding as demand for both fresh fruit and processed juice is increasing in Burundi. Due to the current situation with an unstable market of traditional crops for export, farmers in Matongo have embraced passion fruit as a new source of household income. As the crop generates substantial revenues for farmers, wholesalers and processors, it is important to sustain this sector. The purpose of this research was to compare four variants of diffusionist arguments (age, sex, household size and level of education) and their expression into adoption. Comparative descriptive statistical analysis between adopters and non-adopters to test the essential factors, and participatory survey methods for gathering information were used. Our results showed a highly significant difference between the category of adopters and non-adopters at p < 0.01. However, no significant difference was found between adopters and non-adopters within level of education. Data on the level of education demonstrated that those with little or no education adopted more passion fruit [illiterates (48.9%) and primary level (45.9%)] than these with secondary level (5.2%). The heads of household adopters and non-adopters are mainly men at a rate of 83.7 and 88.3 %, and household size was not a discriminating factor. The factors that promote the adoption of passion fruit are high yield and continuous production, high market demand and permanent source of revenue. Defining only a few variables to analyse the adoption trend could mislead our findings. A participatory approach seems most appropriate for understanding adoption and non-adoption of innovation [less ▲]

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