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See detailDiversity, phylogenetic relationship and antibacterial potential of Bifidobacterium species isolated from raw milk production chain in Abidjan (Côte d'Ivoire)
Kouamé-Sina, Sylvie Mireille; Dadié, Adjéhi; Makita, Kohei et al

in African Journal of Microbiology Research [=AJMR] (2011), 5(21), 3394-3403

The local dairy commodity, from farm to retail point, is informal and often escapes safety surveillance and results in high contamination of local milk by pathogens. The objective of this study was to ... [more ▼]

The local dairy commodity, from farm to retail point, is informal and often escapes safety surveillance and results in high contamination of local milk by pathogens. The objective of this study was to determine the biodiversity of Bifidobacterium species in the informal dairy production chain in Abidjan and evaluate their potential antibacterial activity against pathogens. Bifidobacterium species were identified after sequencing of hsp60 genes. Results showed that Bifidobacterium were present in 9% of samples. Milkers' hands (14%) and cows’s udders (14%) were the most contaminated with Bifidobacterium. These isolates belong to five different species. Most Bifidobacterium isolated are Bifidobacterium minimum (53%) and Bifidobacterium pseudolongum subsp. Globosum (24.4%). The other strains are composed of one strain of Bifidobacterium thermophilum, Bifidobacterium thermacidophilum subsp. suis and Bifidobacterium magnum. The isolated Bifidobacterium species have antibacterial activities that are not related to bacteriocins production, but to organic acids production (65%), which exert in vitro inhibitory action against Listeria monocytogenes, Salmonella hadar and Salmonella typhimurium, Staphylococcus aureus, Escherichia coli O27 and Escherichia coli O157H7. However, ensuring milk safety along the local milk production chain requires implementation of good hygiene practices together with adapted technology, such as fermentation. [less ▲]

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See detailThe diversity, structure and regulation of beta-lactamases.
Philippon, A; Dusart, Jean; Joris, Bernard ULg et al

in Cellular and Molecular Life Sciences : CMLS (1998), 54(4), 341-6

beta-Lactamase production is responsible for the appearance of a large number of pathogenic bacterial strains exhibiting a high degree of resistance to beta-lactam antibiotics. A large number of enzymes ... [more ▼]

beta-Lactamase production is responsible for the appearance of a large number of pathogenic bacterial strains exhibiting a high degree of resistance to beta-lactam antibiotics. A large number of enzymes have been described with very diverse primary structures and catalytic profiles. Nevertheless, all known three-dimensional structures of active-site serine beta-lactamases exhibit a high degree of similarity with apparently equivalent chemical functionalities in the same strategic positions. These groups might not, however, play identical roles in the various classes of enzymes. Structural data have also been recently obtained for the zinc metallo-beta-lactamases, but the detailed catalytic mechanisms might also differ widely, depending on the enzyme studied. Similarly, the induction of the synthesis of beta-lactamases is now better understood, but many questions remain to be answered. [less ▲]

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See detailDiversity-function relationship of ammonia-oxidizing bacteria in soils among functional groups of grassland species under climate warming
Malchair, Sandrine ULg; De Boeck, H. J.; Lemmens, CMHM et al

in Applied Soil Ecology (2010), 44

Although warming and plant diversity losses have important effects on aboveground ecosystem functioning, their belowground effects remain largely unknown. We studied the impact of a 3 °C warming and of ... [more ▼]

Although warming and plant diversity losses have important effects on aboveground ecosystem functioning, their belowground effects remain largely unknown. We studied the impact of a 3 °C warming and of three plant functional groups (forbs, grasses, legumes) on ammonia-oxidizing bacteria (AOB) diversity (polymerase chain reaction-denaturing gradient gel electrophoresis, PCR-DGGE) and their function (potential nitrification) in artificial grasslands. Warming did not influence AOB diversity and function. Sequencing of 16S rRNA gene fragments retrieved from DGGE gel revealed that they were all related to Nitrosospira-like sequences. Clustering analysis of DGGE profiles resulted in two nodes, separating AOB community structure under legumes from all other samples. Decreased AOB richness (number of DGGE bands) and concurrent increased potential nitrification were also observed under legumes. We hypothesized that ammonium availability was the driving force regulating the link between aboveground and belowground communities, as well as the AOB diversity and function link. The results document that the physiology of AOB might be an important regulator of AOB community structure and function under plant functional groups. This study highlights the major role of the microbial community composition in soil process responses to changes in the functional composition of plant communities. [less ▲]

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See detailDiverticulosis and Diverticulitis in the Immunocompromised Patients
Detry, Olivier ULg; Honore, Pierre ULg; Meurisse, Michel ULg et al

in Acta Chirurgica Belgica (1999), 99(3, May-Jun), 100-2

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See detail"Divided families, fractured schooling, in Mexico: educational consequences of children exposition to international migration”
Zuniga, Victor; Vivas Romero, Maria ULg

Report (in press)

This cahier aims to identify and analyze the consequences of international migration movements on the school itineraries and aspirations of children who have been exposed to international migration ... [more ▼]

This cahier aims to identify and analyze the consequences of international migration movements on the school itineraries and aspirations of children who have been exposed to international migration between Mexico and the U. S. Some of these children are active actors of migratory flows because they moved from one country to another. Others are not active migrants; however, given the fact that they belong to divided families due to international migration, they are exposed to the impacts of their family members’ decisions. Consequently, two critical components of their migratory experiences will be the focus of our analysis. Firstly, we will analyze their school trajectory and secondly the family dispersion due to their migratory decisions. [less ▲]

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See detailDividends and Foreign Performance Signaling
Muller, Aline ULg; Joliet, Robert

Conference (2008, June 04)

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See detailDividends and foreign performance signaling
Muller, Aline ULg; Joliet, Robert

Conference (2008, February 07)

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See detailDividends and Foreign Performance Signaling
Muller, Aline ULg; Joliet, Robert

Conference (2009, June 29)

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See detailDividing the Traffic Matrix to Approach Optimal Traffic Engineering
Balon, Simon ULg; Leduc, Guy ULg

in 14th IEEE International Conference on Networks (2006, September)

In this paper we propose a new method to approach optimal Traffic Engineering routing. The method consists of dividing the traffic matrix into $N$ sub-matrices, called strata, and route each of these ... [more ▼]

In this paper we propose a new method to approach optimal Traffic Engineering routing. The method consists of dividing the traffic matrix into $N$ sub-matrices, called strata, and route each of these independently. We propose two different implementations of our method in routers. Our method can also be used to compute a very precise approximation of the optimal value of a given objective function for comparison to heuristic Traffic Engineering algorithms. For this application, our algorithm is very efficient on large topologies compared to an LP formulation. [less ▲]

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See detailLa Divine Comédie
Kurth, Godefroid ULg

Book published by Bulens (1902)

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See detailLes divinités canopes représentées par paires dans le monnayage alexandrin
Winand, Jean ULg

in Clarysse, Willy (Ed.) Egyptian Religion. The Last Thousand Years (1998)

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See detailLes divinités canopes
Winand, Jean ULg

Conference given outside the academic context (1992)

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See detail“Divinités incarnées et dauphins télépathes: Ethnographie de deux dispositifs d’enchantement
Halloy, Arnaud; Servais, Véronique ULg

in Colon, Paul-Louis (Ed.) Rencontres sensorielles : approches sociologiques et anthropologiques des sens (2013)

Drawing on first–hand accounts of possession experiences in an Afro–Brazilian cult and Dolphin encounters at sea, we compare the two settings in order to identify the common features in people’s ... [more ▼]

Drawing on first–hand accounts of possession experiences in an Afro–Brazilian cult and Dolphin encounters at sea, we compare the two settings in order to identify the common features in people’s experiences, but also in the technologies of enchantment that make them possible. By “technology of enchantment”, we mean a space of practice, neither totally material, nor totally subjective, that supports “revelation”–like encounters with real or imagined intentional entities. Our analysis suggests that both types of experiences share at least five common traits: the presence of a prolific imagination marked by ontological and epistemological uncertainty; uncanny feelings; attentional focus on inner bodily and mental states; trance–like states; and an intentional shift from active to passive. The immersion of the individual in a sensorily organized environment (sensescape), made of distributed perceptual saliences, is found to play a central role in the merging of unusual body states with the imagination, which in turn enables the production of “new” embodied meanings belonging to enchantment [less ▲]

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See detailLes divinités-canopes sur les monnaies impériales d'Alexandrie
Winand, Jean ULg

in Grimal, N. C. (Ed.) Hommages à J. Leclant (1994)

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See detailLa divinyl éther synthase de plantes
Hoyaux, P.; Fauconnier, Marie-Laure ULg; Delcarte, J. et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2001), 5(2), 79-84

Divinyl ether synthase, an enzyme of the lipoxygenase pathway transforms, in potato tubers, 9-hydroperoxides of fatty acids into colneleic and colnelenic acid, two divinyl ethers of fatty acids. The ... [more ▼]

Divinyl ether synthase, an enzyme of the lipoxygenase pathway transforms, in potato tubers, 9-hydroperoxides of fatty acids into colneleic and colnelenic acid, two divinyl ethers of fatty acids. The enzyme has been described in a limited number of quite different plants. The enzyme has also been detected in tomato roots, garlic bulbs, tobacco plants and in marine algae. The enzyme is bound to membranes and is located in the microsomal fraction. The molecular weight of the enzyme exceeds 100,000 Da, its optimal pH is around 9 and its high specificity for 9-hydroperoxides as substrate is described. The reactional mechanism has been elucidated using radio-labelled molecules. Colneleic and colnelenic acid can be degraded enzymatically or not into aldehydes and oxo-acids. Those last compounds are also formed by the action of hydroperoxide lyase on 9-hydroperoxides of fatty acids. As other enzymes of the lipoxygenase pathway, reaction products of divinyl ether synthase are involved in pathogenic resistance. Colneleic and colnelenic acid content in potato plants has been corelated with resistance to Phytophthora infestans. [less ▲]

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See detailThe Division and Cell Wall Gene Cluster of Enterococcus Hirae S185
Duez, Colette ULg; Thamm, Iris ULg; Sapunaric, Frédéric ULg et al

in DNA Sequence : The Journal of DNA Sequencing & Mapping (1998), 9(3), 149-161

A chromosomal 10355-bp segment of Enterococcus hirae S185 contains nine orfs which occur in the same order as the MraW-, FtsL-, PBP3-, MraY-, MurD-, MurG-, FtsQ-, FtsA- and FtsZ-encoding genes of the ... [more ▼]

A chromosomal 10355-bp segment of Enterococcus hirae S185 contains nine orfs which occur in the same order as the MraW-, FtsL-, PBP3-, MraY-, MurD-, MurG-, FtsQ-, FtsA- and FtsZ-encoding genes of the division and cell wall clusters of Escherichia coli and Bacillus subtilis. The E. hirae DNA segment lacks the genes which in E. coli encode the ligases Ddl, MurC, MurE and MurF and the integral membrane protein FtsW. The encoded E. hirae and E. coli proteins share 25% to 50% identity except FtsL and FtsQ (approximately = 14% identity). [less ▲]

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See detailDivision ethnoraciale et pénalisation
Vanneste, Charlotte ULg

in Revue de l'Institut de Sociologie de l'Université Libre de Bruxelles (2014), volume 2013

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