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See detailLe redoublement en Fédération Wallonie-Bruxelles
Baye, Ariane ULg

Conference given outside the academic context (2016)

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See detailEstimating carbon fluxes in a Posidonia oceanica system: Paradox of the bacterial carbon demand
Velimirov, Branko; Lejeune, Pierre; Kirschner, A. et al

in Estuarine Coastal & Shelf Science (2016), 171

A mass balance ecosystemic approach, based on bacterial carbon demands and primary production data, was used to investigate if the bacterial community (freewater bacterioplankton and benthic bacteria of ... [more ▼]

A mass balance ecosystemic approach, based on bacterial carbon demands and primary production data, was used to investigate if the bacterial community (freewater bacterioplankton and benthic bacteria of the oxygenated sediment layer) could be sustained by the main primary producers (Posidonia oceanica and its epiphytes, adjacent macroalgae and phytoplankton communities; hereafter called the P. oceanica system) of a non-eutrophic Mediterranean bay. Unexpectedly, the findings of this study differed from previous works that used benthic incubation chamber and O2 optode methods. In this study, data were grouped in two categories, corresponding to two time periods, according to the seawater temperature regime (<18 °C or >18 °C): from May to October and from November to April. Between May and October, the produced benthic macrophyte tissues could not provide the carbon required by the bacteria of the oxygenated sediment layer, showing that the balance production of the investigated bay was clearly heterotrophic (i.e. negative) during this time period. In contrast, between November and April, benthic bacteria respiration nearly equated to carbon production. When integrating the open water carbon dynamics above the meadow in the model, a negative carbon balance was still observed between May and October, while a slight carbon excess was noticed between November and April. In the light of these findings, the carbon balance being negative on an annual basis, alternative carbon sources are required for the maintenance of the bacterial carbon production. [less ▲]

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See detail“Rhythm and Repetition in Caryl Phillips’s Dancing in the Dark”
Mascoli, Giulia ULg

Conference (2016, March 20)

My proposal is to deal with Dancing in the Dark (London: Vintage, 2005), a novel by Caryl Phillips, a contemporary British author of Caribbean descent. This narrative is devoted to the Caribbean American ... [more ▼]

My proposal is to deal with Dancing in the Dark (London: Vintage, 2005), a novel by Caryl Phillips, a contemporary British author of Caribbean descent. This narrative is devoted to the Caribbean American entertainer Bert Williams (1874–1922) who was the first black performer in the Ziegfield Follies and it traces his frustrating life as a black performer who had to blackface. Like most of Phillips’s literary production, Dancing in the Dark is shaped by music, both thematically –there are scenes involving musical performances, lyrics interspersed throughout the novel– and formally through the recurrent and creative use of repetitions and meaningful variations in rhythm, and sonic effects. Indeed, various elements of sound are present through poetic language and forms to emphasize elements of rhythm: repetitive devices such as rhymes, meters and alliterations. My contention is that these rhythmic devices partake in the emotional impact of Phillips’s writing; sonic elements emphasize the musical properties of language, strike the reader and prevent them from forgetting the traumatic experience of Bert. Through repetition, they transfer the character’s traumatic experience into the writing and create a sense of sympathy with the reader which privileges immediate empathy. If Bert Williams has been largely forgotten until recently, I believe that Phillips’s rhythmic prose will enable Bert’s story to resonate in the reader’s mind long after closing the book. [less ▲]

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See detailThérapeutiques conservatrices des tendinopathies : quoi de neuf ?
Kaux, Jean-François ULg

in 11ème Congrès d'actualités diagnostiques, éthiques et thérapeutiques de l'arrondissement de Dinant (2016, March 19)

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See detailGoro Gheri as the "perfect secretary"?
Miesse, Hélène ULg

Conference (2016, March 19)

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See detailClinical and molecular classification of glioblastoma patients
Lambert, Jérémy ULg; Kaoma, Tony; Van Dyck, Eric et al

Poster (2016, March 19)

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See detailLes PCSK9 : la mort des statines ?
RADERMECKER, Régis ULg

Conference (2016, March 19)

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See detailThe Islamic coinage of Barqa from the conquest up to the advent of the Fatimids
Bauden, Frédéric ULg

Conference (2016, March 19)

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See detailUnderstanding Usage Behaviour in a Peer-to-Peer Task Community
Deliège, Fanny ULg; Ates, Zelal ULg; Benoit, Sabine et al

Scientific conference (2016, March 18)

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See detailProcedural learning as a measure of functional impairment in a mouse model of ischemic stroke
Linden, Jérôme ULg; Van de Beek, Lise; Plumier, Jean-Christophe ULg et al

in Behavioural Brain Research (2016), 307

Basal ganglia stroke is often associated with functional deficits in patients, including difficulties to learn and execute new motor skills (procedural learning). To measure procedural learning in a ... [more ▼]

Basal ganglia stroke is often associated with functional deficits in patients, including difficulties to learn and execute new motor skills (procedural learning). To measure procedural learning in a murine model of stroke (30min. right MCAO), we submitted C57Bl/6J mice to various sensorimotor tests, then to an operant procedure (Serial Order Learning) specifically assessing the ability to learn a simple motor sequence. Results showed that MCAO affected the performance in some of the sensorimotor tests (accelerated rotating rod and amphetamine rotation test) and the way animals learned a motor sequence. The later finding seems to be caused by difficulties regarding the chunking of operant actions into a coherent motor sequence; the appeal for food rewards and ability to press levers appeared unaffected by MCAO. We conclude that assessment of motor learning in rodent models of stroke might improve the translational value of such models. [less ▲]

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See detail"L'Afrique du Nord, relais d'influence pour la Turquie »
Bayramzadeh, Kamal ULg

Scientific conference (2016, March 18)

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See detailWill Big Data Deliver Its Promised Productivity Growth?
Artige, Lionel ULg

Conference (2016, March 18)

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See detailRegain of fitness through in vitro replication for a recombinant murine norovirus
de Oliveira-Filho, Edmilson; Ludwig, Louisa ULg; Toffoli, Barbara et al

Poster (2016, March 18)

INTRODUCTION Molecular mechanisms driving norovirus evolution are the accumulation of point mutations and recombination. Recombination can create considerable changes in viruses, allowing for complete ... [more ▼]

INTRODUCTION Molecular mechanisms driving norovirus evolution are the accumulation of point mutations and recombination. Recombination can create considerable changes in viruses, allowing for complete antigenic shifts, host jumps and fitness and pathogenesis modifications. Mathijs et al. recently isolated a viable recombinant murine norovirus (RecMNV) in vitro after coinfection of two parental MNV strains (MNV1-CW1 and -WU20) in a mouse leukaemic monocyte-macrophage cell line (RAW 264.7). The ensuing RecMNV possessed reduced in vitro fitness compared to its parental strains but has also been shown to have retained in vivo infectivity (Mathijs et al, submitted). The aim of this study was to follow the replicative and genetic adaptations of RecMNV over serial in vitro passages in order to characterise its capability of replicative fitness adaptation. MATERIALS AND METHODS: RecMNV was serially replicated in vitro in monolayers of RAW 264.7 cells over ten passages. Following a first initial infection at an MOI of 0.05, cell layers were consecutively infected with 100 μl neat supernatant of the preceding passage. Two independent lysis plaque assays were performed in triplicate with RecMNV progenies resulting from the first (early) and tenth (late) passage (RecE and RecL). Viral plaque sizes of RecE and RecL were measured with image processing program Image J and statistical analyses of plaque size diameters were subsequently performed. To obtain the complete genome sequences of RecE and RecL, a sequencing strategy was developed in which the MNV genome was divided into seven regions and amplification was performed using overlapping primers. Nucleotide sequences of RecE and RecL were analysed via BioEdit Sequence Editor. Growth curves of RecE and RecL progenies were established for high (10) or low MOI (0.01). RESULTS After ten in vitro passages, viral lysis plaque size diameters had increased significantly. Molecular analysis of RecMNV and both parental strains showed nine nucleotide mutations in the RecMNV genome, comprising three non-silent mutations. In addition, a mutation at position 7245 (A187G) introduced a stop codon, resulting in a 20 AA shorter VP2 in RecMNV (for both RecE and RecL). A comparison of RecE and RecL revealed four non-silent mutations in the NS1-2 and NS7 region of ORF1, two of which were present in the latter region (G1384D and S1393N). DISCUSSION This is the first study in which the fitness of a recombinant NoV strain was evaluated in vitro. Our data provides evidence of viral adaptation to a new environment (here a cell culture system) after a recombination event. Evidence of gain-of-function of RecMNV was demonstrated by differences in growth curves and viral lysis plaque size. In addition, non-silent mutations associated to the gain-of-function/in vitro adaptation were detected. It is noteworthy, that the mutation causing a shorter VP2 in RecE and RecL did not compromise its ability to infect and replicate either in vitro or in vivo (Mathijs et al, submitted). As a perspective we should like to characterise the precise mutation(s) responsible for the fitness regain via infectious clone assay. [less ▲]

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See detailLes libéraux belges et le national-socialisme (1933-1945)
Brüll, Christoph ULg

Conference (2016, March 18)

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See detailChecklist of Aphidiinae (Hymenoptera: Braconidae) and Aphelinus (Hymenoptera: Aphelinidae) species from Belgium with respectively four and three new records
Chevalier Mendes Lopes, Thomas ULg; Libert, Pierre-Nicolas; Starý, Petr et al

in Zootaxa (2016), 4092(4)

Aphid parasitoids have good potential for crop protection. However, they have been poorly studied in Belgium, especially in terms of species diversity. Therefore, the aim of this work was to establish the ... [more ▼]

Aphid parasitoids have good potential for crop protection. However, they have been poorly studied in Belgium, especially in terms of species diversity. Therefore, the aim of this work was to establish the first checklist for the country. To complete the list, aphid parasitoids were sampled in wheat and pea fields near Gembloux (Belgium), in 2013 and 2014. Among the identified species, Aphelinus asychis Walker, Aphelinus daucicola Kurdjumov, Aphelinus fusciscapus (Förster), Aphidius asteris Haliday, Aphidius eadyi Starý, Gonzalez & Hall, Praon barbatum Mackauer, and Trioxys auctus (Haliday) were recorded for the first time in Belgium. Thirty-two Aphidiinae and seven Aphelinus species were included in the checklist. It is hoped this study will stimulate further research, as species diversity is still low compared with neighbouring countries. [less ▲]

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