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See detailAN IDENTIFICATION STUDY ON BOTTLENOSE DOLPHINS (TURSIOPS TRUNCATUS) IN NORTHEAST PATAGONIA, ARGENTINA
Vermeulen, Els ULg; Cammareri, Alejandro; Failla, Mauricio et al

Poster (2008, October 13)

In Argentina, bottlenose dolphin (Tursiops truncatus) sightings decreased notably since the late 80s in regions where it used to be frequent to observe them. Nowadays, Northeast Patagonia is one of the ... [more ▼]

In Argentina, bottlenose dolphin (Tursiops truncatus) sightings decreased notably since the late 80s in regions where it used to be frequent to observe them. Nowadays, Northeast Patagonia is one of the few regions where they still can be seen frequently, although local increasing human activities result in increasing need for information. In general, photo-identification has been established as a helpful tool in cetacean research. However, only few studies have applied this method to bottlenose dolphins in Argentina. This study is therefore aimed to obtain basic information concerning bottlenose dolphins through their identification, this way contributing to their conservation. Land-based observations were made in the northern Gulf of San Matías, Patagonia, Argentina, from August 2006 up to June 2008. Over 15.000 digital pictures of dorsal fins were analysed using the computer assisted identification systems FinEx and FinMatch. Dolphins re-identified during all four seasons in one year were defined as residents. The degree of residency was further estimated by the re-identification frequency (RF); non-resident (RF=1-3) - occasional (RF=4-7) - frequent (RF=8-11) - common (RF¿12). In total, 221 surveys were conducted with an average observation effort of 3.2h per survey, resulting in a total observation effort of 915h of which 124h were spent with 182 dolphin groups. A total of 50 dolphins were identified of which the vast majority (82%) was photographed only in the Natural Protected Area Bahía San Antonio (NPABSA), due to the higher observation effort in this region. Nevertheless, 12% of the catalogued dolphins could be photographed in both NPABSA and the Río Negro estuary, indicating that their home-range might include at least the whole northern region of the Gulf San Matias. Dolphins could be re-identified up to 13 days with 54% showing a degree of residency for NPABSA. This study shows the first data concerning bottlenose dolphins in Northeast Patagonia, but further investigation is highly necessary to improve their conservation. Therefore, the obtained photo-identification catalogue from the presented study is meant to serve as a primary tool for progressing research concerning this species in Argentina. [less ▲]

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See detailIdentification, cartographie et gestion des Forêts à Haute Valeur de Conservation : cas de la concession Pallisco, Cameroun
Julve Larrubia, C.; Sépulchre, F.; Philippart, Julien ULg et al

Conference (2009)

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See detailIdentification, characterization and expression profiling of the tomato gene TomLoxF
Mariutto, Martin ULg; Duby, Franceline ULg; Adam, Akram et al

Poster (2010, January 26)

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See detailIdentification, Design and Evaluation of Pharmacological tools for the orphan GPCR GPR22
Geubelle, Pierre ULg; Gilissen, Julie ULg; Dupuis, Nadine ULg et al

Poster (2015, January 27)

GPCRs are the largest family of membrane receptors and are characterized by 7 transmembrane domains. GPR22 is a GPCR that has no known endogenous ligand and is thus considered "orphan". Its presence ... [more ▼]

GPCRs are the largest family of membrane receptors and are characterized by 7 transmembrane domains. GPR22 is a GPCR that has no known endogenous ligand and is thus considered "orphan". Its presence situated at the heart and brain levels makes it a potential target for new therapeutic pathways. This study consist in the identification of a synthetic ligand of GPR22 receptor to use it as a pharmacological tool in the study of the signaling channels of GPR22 in order to understand its role and to validate it as a new therapeutic target. The initial hypothesis was that GPR22 is coupled to the Gαi protein. [less ▲]

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See detailIdentification, Design and Evaluation of Pharmacological tools for the orphan GPCR GPR22
Geubelle, Pierre ULg; Gilissen, Julie ULg; Dupuis, Nadine ULg et al

Poster (2014, November 21)

GPCRs are the largest family of membrane receptors and are characterized by seven transmembrane domains. This family of receptors is currently the most successfully targeted protein for therapeutic ... [more ▼]

GPCRs are the largest family of membrane receptors and are characterized by seven transmembrane domains. This family of receptors is currently the most successfully targeted protein for therapeutic purposes. GPR22 is a GPCR that was discovered in 1997. It has no known endogenous ligand and is thus considered "orphan". Its presence situated at the heart and brain levels makes it a potential target for new therapeutic pathways. The only information about its signaling channel could be its coupling with G proteins. This study consist in the identification of a synthetic ligand of GPR22 receptor to use it as a pharmacological tool in the study of the signaling channels of GPR22 in order to understand its role and to validate it as a new therapeutic target. The initial hypothesis was that GPR22 is coupled to the Gαi protein. [less ▲]

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See detailIdentification, Health Monitoring and Damage Detection of Structural Dynamic Systems: Results Obtained Within the European COST Research Network
Golinval, Jean-Claude ULg; Link, Michael

Book published by Academic Press (2003)

This special issue presents the results of a research action organised within the framework of the European CO-operation in the field of Scientific and Technical research (COST). The COST F3 Action ... [more ▼]

This special issue presents the results of a research action organised within the framework of the European CO-operation in the field of Scientific and Technical research (COST). The COST F3 Action started on June 25, 1997 for a duration of four years with the aim of co-ordinating national funded research efforts in the field of structural dynamics. Thirteen European countries were participating in this Action: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Italy, The Netherlands, Portugal, Spain, Switzerland and the United Kingdom plus the Joint Research Centre of the European Union in Ispra, Italy and the European Commission. The research network that has been developed within COST Action F3 has allowed not only to exchange research ideas and results, but also to support young researchers in the field. Throughout its four years of duration, COST Action F3 brought together the foremost researchers in Europe in a series of activities associated with three threads of structural dynamics : • model updating methods ; • structural health monitoring and damage detection ; • identification of non-linear systems. These activities included the organisation of major international conferences, the exchange of research staff through Short Term Scientific Missions and the organisation of benchmarking exercises. It is the latter activity which concerns this special issue. Thirty-one papers from altogether seven European countries are presented. [less ▲]

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See detailIdentification, production et caractérisation de l’amylolysine, un lantibiotique de Type-B produit par Bacillus amyloliquefaciens GA1
Arguelles Arias, Anthony ULg

Doctoral thesis (2014)

Bacillus amyloliquefaciens GA1, antérieurement dénommée Bacillus subtilis GA1, est décrit dans la littérature comme étant une souche capable d’inhiber la croissance de nombreux micro-organismes. Afin ... [more ▼]

Bacillus amyloliquefaciens GA1, antérieurement dénommée Bacillus subtilis GA1, est décrit dans la littérature comme étant une souche capable d’inhiber la croissance de nombreux micro-organismes. Afin d’identifier les molécules responsables de ces activités biologiques, un séquençage partiel et aléatoire du génome de cette souche a été entrepris au laboratoire. Parallèlement à ce séquençage, nous avons entrepris une caractérisation globale des propriétés biologiques des métabolites secondaires produits par cette souche. La production de ces métabolites, essentiellement de type PKs et NRPs, a été mise en évidence par chromatographie liquide couplée à la spectrométrie de masse (LC-MS). Ainsi, nous avons pu mettre en évidence la présence de plusieurs clusters de gènes mais également la production de lipopeptides, polykétides et sidérophores. Lors du séquençage partiel du génome de B. amyloliquefaciens GA1, l’identification d’une séquence de 800 paires de bases (bp) homologue à celle d’un gène de Bacillus licheniformis ATCC 14580 codant pour une enzyme de modification d’un lantibiotique (« Lanthionine containing antibiotic »), nous a permis d’émettre l’hypothèse que B. amyloliquefaciens GA1 pourrait produire une molécule de type lantibiotique. Afin de vérifier cette hypothèse, nous avons entrepris l’identification, la purification et la caractérisation de ce peptide antibactérien. Pour permettre cette caractérisation, nous avons tout d’abord mis au point une méthode de production et de purification adaptée aux lantibiotiques. En parallèle, un séquençage des gènes responsables de la biosynthèse de ce lantibiotique, dénommé amylolysine, a également été réalisé. Les gènes responsables de la biosynthèse du lantibiotique sont au nombre de sept, formant quatre opérons, pour une taille totale de 9,6 kilobases (kb). La masse moléculaire du lantibiotique purifié, ainsi que les gènes de biosynthèse de celui-ci, nous ont confirmé que le lantibiotique produit par B. amyloliquefaciens GA1 est un lantibiotique qui n’avait pas encore été décrit dans la littérature. Nous avons mis en évidence le mode d’action de cette bactériocine de Type 1 et initier une étude structurale de cette dernière. Nos résultats ont démontrés que l’amylolysine est un lantibiotique de Type-B bien que son mode d’action soit atypique pour ce type de molécule. En effet, l’amylolysine est capable, à la fois, d’interagir avec le lipide II, ce qui inhibe la synthèse du peptidoglycane, et de former des pores dans la membrane des bactéries sensibles. Ce double mode d’action, décrit chez les lantibiotiques de Type-A, n’a jamais été décrit chez les lantibiotiques de Type-B, qui, en général ne sont pas capables de former des pores dans la membrane des bactéries. Enfin, dans le but de démontrer une application biotechnologique de l’amylolysine, sa capacité à inhiber la croissance de souches pathogènes, tel que Listeria monocytogenes, sur de la viande de volaille a été démontrée et comparée à la nisine, un lantibiotique utilisé en tant qu’agent de conservation dans l’industrie agro-alimentaire depuis de nombreuses années. En plus d’inhiber la croissance de L. monocytogenes, nous avons démontré que l’amylolysine est plus stable que la nisine par rapport aux protéases présentes naturellement dans la viande de volaille. Ce qui fait de l’amylolysine un excellent candidat pour l’utilisation de cette dernière en tant qu’agent de conservation. [less ▲]

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Peer Reviewed
See detailIdentificazione di un sito polimorfico al locus del GH bovino tramite PCR-RFLP
Messina, Mariella; Gerin, Daniel; Renaville, Robert ULg et al

in Soc. ITAL Buiatria vol XXXIII (2001)

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See detailIdentifier et contacter un informateur
Brahy, Rachel ULg; Lejeune, Christophe ULg

Scientific conference (2012, February 14)

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See detailIdentifier les structures locales de décision
Vermeulen, Cédric ULg

in Triplet, Patrick (Ed.) Manuel de gestion des aires protégées d'afrique de L'ouest (2009)

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See detailIdentifying and computing nonlinear normal modes
Cammarano, A.; Carrella, A.; Renson, Ludovic ULg et al

in Proceedings of the SEM IMAC XXX Conference (2012, February)

Non linear normal modes offer a rigorous framework, both mathematical and physical, for theoretical and experimental dynamical analysis. Albeit still in its infancy, the concept of non linear normal modes ... [more ▼]

Non linear normal modes offer a rigorous framework, both mathematical and physical, for theoretical and experimental dynamical analysis. Albeit still in its infancy, the concept of non linear normal modes has the potential of providing to both the academic and the industrial establishment a powerful tool for the analysis of non linear dynamical systems. However, in order to exploit the full potential of this theory (and its associated simulation capability), there is need to integrate it with other branches of non linear structural dynamics: namely, in order for the non linear normal modes of a real - physical - structure to be computed, there is need to identify and quantify its non linearity. In this paper, an identification method based on the measured Frequency Response Function (FRF) is employed to identify and quantify the system's non linearity before computing the system's non linear normal modes. [less ▲]

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See detailIdentifying and modeling the integrated design process of net Zero Energy buildings
Attia, Shady ULg; Walter, Emmanuel; Andersen, Marilyne

in Proceedings of the High Performance Buildings - Design and Evaluation Methodologies Conference (2013, June)

High Performance Buildings (HPB), including Net Zero Energy Buildings (NZEBs) and nearly Zero Energy Buildings (nZEB) are emerging as an important market in Europe and around the world. However, there are ... [more ▼]

High Performance Buildings (HPB), including Net Zero Energy Buildings (NZEBs) and nearly Zero Energy Buildings (nZEB) are emerging as an important market in Europe and around the world. However, there are very few studies that aim to model the process of HPBs and define key design processes, decisions and competencies of design teams. More importantly, there is hardly any documentation processes on tools currently being used to design high performance building. Therefore, the purpose of this paper is to identify, model and propose a generic integrated process maps for HPB. The generic process map focuses on the design phases steps, roles and tools used. The research methodology is based on literature review and a case study. With the help of a process modelling software (TIBCO), a Swiss office building (Green Office) is used to validate the produced process maps. The visual maps delivers insights on the integrated design process reporting on the means of improving the delivery of HPBs. [less ▲]

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See detailIdentifying beneficiaries of poverty alleviation programs
Mai, Lan Phuong ULg; Nguyen Mau, Dung; Lebailly, Philippe ULg

in Economics and Development Review = Kinh té̂ và phát triẻ̂n (2011), Special issue(July 2011), 29-36

Detailed reference viewed: 68 (14 ULg)