References of "2012"
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See detailHow does elicitor and antimicrobial fengycin interact with plasma membranes of sensitive cells ?
Nasir, Mehmet Nail ULg; Eeman, Marc; Lins, Laurence ULg et al

Conference (2012, April)

Fengycin is characterized by its strong antifungal and low hemolytic activities. It has also been recently demonstrated that it has plant elicitor properties and is also able to enhance the elicitors’ ... [more ▼]

Fengycin is characterized by its strong antifungal and low hemolytic activities. It has also been recently demonstrated that it has plant elicitor properties and is also able to enhance the elicitors’ activity of surfactin. The cell target of its biological activities is supposed to be plasma membrane. In spite of these interesting biological activities, fengycin has not been extensively investigated probably because of the difficulties related to its production. In a first time; we have characterized the interfacial properties of fengycin by tensiometry measurements and demonstrated that this surface activity was pH-dependent. In a second time; we have investigated the interactions of the lipopeptide with membrane lipids using model membranes such as Langmuir monolayers and multilammelar vesicles (MLVs). Our results indicate that the lipopeptide was able to penetrate into different lipid monolayers showing a preference for sterol-containing monolayers. In order to better understand the mechanism of the interactions of fengycin with membranes at the molecular level, MLVs with or without fengycin have been analyzed by spectroscopic techniques. We have shown that conformational changes of the lipopeptide occurred in the presence of lipids and they were more significant in the presence of sterol. Moreover, tyrosine residues of the lipopeptide seem to play an important role in these interactions. In conclusion, we have determined that the surface-active behavior as well as the conformation of fengycin depends on its environment. We have also showed that the lipopeptide does not interact with all class of lipids in the same way and presents a preference for sterols. The presence of key groups within peptide cycle has also been supposed for the biological activities of the lipopeptide. [less ▲]

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See detailL'économie sociale et solidaire
Huybrechts, Benjamin ULg

in Blanchet, Vivien; Carimentrand, Aurélie (Eds.) Dictionnaire du commerce équitable (2012)

Définit l'économie sociale et solidaire et positionne le commerce équitable par rapport à cette notion

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See detailLa population, émergence d'un concept technologique
Oulc'hen, Hervé ULg

in Kiéfer, Audrey; Risse, David (Eds.) La biopolitique outre-Atlantique après Foucault (2012)

In his writings concerned with biopolitics Foucault gives the concept of population a central place and means to find its arising at the crossroads of several types of discourse : particularly about ... [more ▼]

In his writings concerned with biopolitics Foucault gives the concept of population a central place and means to find its arising at the crossroads of several types of discourse : particularly about species and the public. The genealogy of this bifocal concept is in keeping with some aspects of Canguilhem’s epistemological approach to the regulation of milieus, following his work on scientific ideology. Not only does such a parallel enable us to bring out the critical use of biopolitical concepts, it also leads us to examine the technological sequence which has made it possible for the concept of population to be determined. Such a sequence is articulated in three moments – utopia, practice, theory – which enable us to account for the evolution of the technology of police. [less ▲]

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See detailRéponses du Martin-pêcheur huppé Alcedo cristata à la perturbation de ses sites de nidification
Kisasa Kafutshi, Robert ULg

in Malimbus (2012), 34(28-38),

From 2004 to 2009, two colonies of Malachite Kingfisher were monitored by ringing the nestlings and adults, counting eggs and observing parental activity at the nests. Results show that 10 % of nests were ... [more ▼]

From 2004 to 2009, two colonies of Malachite Kingfisher were monitored by ringing the nestlings and adults, counting eggs and observing parental activity at the nests. Results show that 10 % of nests were destroyed by people in the Symphonies site as against 78 % in the Monastery site. Consequently, the number of nests available for breeding is lower at Monastery than at Symphonies. The number of fledged chicks per nest at Symphonies was twice that at the Monastery. Site fidelity is higher for the adults in the Symphonies site (26 %) than at the Monastery (11 %). This suggests that the Monastery site is less favourable to the survival of the Malachite Kingfisher than the Symphonies site. The best strategy to protect this species seems to be the maintenance of a good number of nesting sites. [less ▲]

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See detailNatural Killer cells - role in local tumor growth and metastasis
Langers, Inge ULg; Renoux, Virginie ULg; Thiry, Marc ULg et al

in Biologics: Targets and Therapy (2012)

Historically, the name of Natural Killer (NK) cells came from their natural ability to kill tumor cells in vitro. From the seventies to date, accumulating data highlighted the importance of NK cells in ... [more ▼]

Historically, the name of Natural Killer (NK) cells came from their natural ability to kill tumor cells in vitro. From the seventies to date, accumulating data highlighted the importance of NK cells in host immune response against cancer and in therapy-induced anti-tumor response. The recognition and the lysis of tumor cells by NK cells are regulated by a complex balance of inhibitory and activating signals. This review summarizes NK cell mechanisms to kill cancer cells, their role in host immune responses against tumor growth or metastasis and their implications in anti-tumor immunotherapies via cytokines, antibodies or in combination with other therapies. The regulatory role of NK cells in autoimmunity is also discussed. [less ▲]

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See detailOrganisation du commerce équitable
Huybrechts, Benjamin ULg

in Blanchet, Vivien; Carimentrand, Aurélie (Eds.) Dictionnaire du commerce équitable (2012)

Définition et discussion de la notion d'organisation du commerce équitable

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See detailTHE RESPONSE OF ACETOBACTER SENEGALENSIS TO STRESSORS: A STUDY TOWARDS IMPROVEMENT OF VINEGAR STARTER PRODUCTION
Shafiei, Rasoul ULg; Thonart, Philippe ULg

in Acetic Acid Bacteria (2012, April)

Acetic acid bacteria encounter various harsh conditions during acetic acid fermentation. Ethanol as the main substrate and acetic acid as the major product at low pH can influence deeply on the cellular ... [more ▼]

Acetic acid bacteria encounter various harsh conditions during acetic acid fermentation. Ethanol as the main substrate and acetic acid as the major product at low pH can influence deeply on the cellular functions of acetic acid bacteria. In previous studies in CWBI, Acetobacter senegalensis was used for production of dried vinegar starters; however the impact of stressors (ethanol and acetic acid) on A. senegalensis remained unclear. In this study, different techniques such as flow cytometry, culturability on solid medium and 2-DiGE were used comparatively to investigate the effect of carbon sources of inoculum media on the tolerance of A. senegalensis to stressors. Analysis of respiration system by flow cytometric methods showed that the presence of 2% (v/v) acetic acid in inoculum medium, in one hand, causes 80% of cells to continue to do respiration after a sudden exposure to 1- 3% (v/v) acetic acid in stress media while 89.7% of cells grown in glucose appeared as dead cells after an abrupt exposure to 3%(v/v) of acetic acid. On the other hand, 59.2% and 49.33% of cells grown in the presence of 2% (v/v) of acetic acid could maintain their entire membrane integrity after exposure to 1% and 3% (v/v) of acetic acid, respectively. Inoculum medium contained 5% (v/v) of ethanol as a carbon source enabled about 90% of cells to keep their growing capacities after a sudden exposure to 3% acetic acid. In contrast, just 40% of cells grown in glucose as a carbon source maintained their culturability on solid medium after exposure to 1% acetic acid. A similar profile of culturability was observed for the cells grown in 5% (v/v) ethanol or 2% (v/v) of acetic acid. A proteomic approach (2-DiGE) was used to analyze proteins expressed in the presence of different carbon sources. Differentially expressed proteins were mainly associated with energy metabolism, carbohydrate metabolisms, folding, sorting and degradation processes. The relative abundance of proteins was extensively different for cell grown in glucose compared with protein contents of cells grown in ethanol or acetic acid. In conclusion, production of a cost effective vinegar starter needs a qualified biomass which tolerates ethanol and acetic acid. Tolerance of A. senegalensis to acetic acid depends to a great extent on the composition of the medium which cells grow in. In spite of low adaption to acetic acid for cell grown in glucose, using ethanol or acetic acid in inoculum media renders a physiological state in A. senegelensis which enables it to cope with higher concentration of acetic acid readily, this biomass has a potential to be used as a starter [less ▲]

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See detailAn adaptive thermal comfort model for hot humid South-East Asia
Nguyen, Anh Tuan ULg; Singh, Manoj Kumar ULg; Reiter, Sigrid ULg

in Building & Environment (2012), 56

The present paper presents a full procedure to develop an adaptive comfort model for South-East Asia. Meta-analysis on large number of observations from field surveys which were conducted in this region ... [more ▼]

The present paper presents a full procedure to develop an adaptive comfort model for South-East Asia. Meta-analysis on large number of observations from field surveys which were conducted in this region was employed. Standardization and bias control of the database were fully reported. Statistical tests of significance and weighted regression method applied in the analyses strengthened the reliability of the findings. This paper found a great influence of ‘Griffiths constant’ on the establishment of adaptive comfort equation and proposed an appropriate value. The adaptive comfort model generated is applicable to naturally ventilated building under hot and humid conditions of South-East Asia. The mean neutral comfort temperature (operative temperature, effective temperature, standard effective temperature) in naturally ventilated and air-conditioned building was compared and the differences have been discussed. The similar neutral standard effective temperature in both naturally ventilated and air-conditioned building proposes a new idea to implement SET* into building simulation tools to assess thermal comfort without the attention of building classification. Through the analysis, the effectiveness of behavioral adaptive actions on occupant’s thermal perception has been argued. The extended PMV-PPD model for hot humid conditions was examined and its applicability was recommended. Other comfort related issues, the differences and similarities between various adaptive comfort models were also addressed. [less ▲]

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See detailHave STS Fallen Into a Political Void? Depoliticisation and Engagement in the Case of Nanotechnologies
Thoreau, François ULg; Delvenne, Pierre ULg

in Política & Sociedade (2012), 11(20), 205-226

In this paper we trace some of the key points in the history of Science and Technology Studies (STS). In particular we outline the inherently political dynamics of the field. Against We underline two ... [more ▼]

In this paper we trace some of the key points in the history of Science and Technology Studies (STS). In particular we outline the inherently political dynamics of the field. Against We underline two emerging patterns in the curse of STS: the one of “depoliticisation” and the one of increasing “engagement”. We address the case study nanotechnologies and discuss their intertwined history with the STS. This allows us to point at the risk that the increasing institutionalisation of STS and the political mandate that frames and stabilizes the field’s relationship to the technological developments would create a political void. We conclude that STS research is at a crossroads. It is facing an important empirical turn, which may deprive it from its political significance, and constantly redefine its institutional constraints. STS has to continuously question its underlying political assumptions (as it occurs more and more regarding public participation) and to make it explicit. [less ▲]

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See detailETAPE - Rapport d’évaluation des résultats
Vanmeerbeek, Marc ULg; Bednarek, Stéphanie; Lachaussée, Sophie et al

Report (2012)

Contexte et objectifs ETAPE est un programme d’intervention précoce à domicile au bénéfice de familles à risque de négligence parentale. Le programme prend en charge des enfants de 0 à 30 mois, ainsi que ... [more ▼]

Contexte et objectifs ETAPE est un programme d’intervention précoce à domicile au bénéfice de familles à risque de négligence parentale. Le programme prend en charge des enfants de 0 à 30 mois, ainsi que leurs parents, au rythme d’une à deux visites à domicile par semaine. L’intervention consiste en des massages du bébé, des jeux psychomoteurs. Un temps important est en outre consacré à l’accompagnement et à la guidance du rôle parental. L’originalité du projet est qu’il est centré sur le développement psychomoteur et affectif du bébé en lien avec son ou ses parents. L’étude cherche à mesurer l’efficacité du programme en termes de développement psychomoteur de l’enfant, de qualité d’attachement au sein de la dyade parent-enfant et de compétences éducatives des parents. Méthodologie Les aptitudes psychomotrices de l’enfant ont été mesurées au moyen du test de Brunet et Lézine modifié, au début, en milieu et en fin d’intervention. Le caractère sécure ou non de l’attachement a été mesuré chez le caregiver par Q-Sort en début et en fin d’intervention. Les compétences parentales ont été évaluées tous les six mois durant l’intervention au moyen d’un questionnaire développé par l’équipe de recherche en 2008 (MASPIN) et complété par les intervenants sur base de leurs observations. Résultats Douze enfants ont été étudiés. Les trois quarts ont été pris en charge avant 1 an ; la durée moyenne d’intervention est de 11,3 mois. En moyenne, les enfants gagnent nettement en score de développement moteur global, gagnent un peu en socialisation, sont stables en développement moteur fin. La plupart régressent au score de langage, ce qui influence négativement le score global de développement. Deux enfants sur douze sont sécures au début et à la fin de l’intervention (mais ce ne sont pas les mêmes). Aucun ne termine l’intervention significativement insécurisé, mais la relation dans la dyade n’est en général pas optimale. Les résultats de MASPIN permettent d’étoffer les autres résultats obtenus et de mieux comprendre l’évolution au cas par cas. Discussion Les résultats, mesurés par les tests de Brunet-Lézine et le Q-Sort semblent modestes dans certains domaines, mais doivent être analysés à la lumière des conditions d’intervention. MASPIN a donné une vue beaucoup plus précise de la réalité et de son évolution. Ce questionnaire a aussi permis de monitorer l’intervention. Toutefois, la finesse des observations et l’aspect subjectif de la cotation empêchent une analyse globale des résultats ; la fidélité intercotateur doit encore être validée. MASPIN permet en outre de donner des repères pour le dialogue avec d’autres professionnels impliqués dans le suivi des situations, et fournit un canevas qui facilite la discussion avec les familles sur l’exercice de la parentalité et les objectifs d’intervention. L’analyse des résultats permet de prendre conscience que certaines compétences (par ex., le langage) méritent d’être mieux soutenues et stimulées par les intervenants de terrain.) Des collaborations extérieures devront être développées (par ex : psychologue, aide sociale). L’investissement requis de la part des intervenants est important. Le risque de découragement est grand ; ils doivent être soutenus et supervisés de façon efficace dans ce travail. L’instauration d’un vrai esprit d’équipe est indispensable Conclusion Le rendement de ce programme, destiné à un public particulièrement difficile, est intéressant mais variable selon les situations prises en charge, que ce soit en termes de développement psychomoteur ou d’attachement à la figure parentale. L’outil MASPIN se révèle précieux dans de multiples aspects de la prise en charge, depuis le dialogue avec les professionnels qui identifient la situation, jusqu’au monitorage des objectifs au fil de l’intervention, en passant par la construction des objectifs d’intervention avec les parents. [less ▲]

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See detailBase de données sols de REQUASUD - 3ème synthèse
Genot, Valérie ULg; Renneson, Malorie ULg; Colinet, Gilles ULg et al

Book published by ASBL REQUASUD - D/2012/8689/1 (2012)

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See detailDynamiques écosystémiques co-évolutives: proposition de typologie fonctionnelle des milieux
Hendrickx, Sébastien ULg; Van Der Kaa, Claire ULg; Dopagne, Claude ULg et al

in Notes de recherche - Conférence Permanente du Développement Territorial Région Wallonne (2012), 34

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See detailA fully nonlinear finite element model for orthodontic tooth movement prediction
Mengoni, Marlène ULg; D'Otreppe, Vinciane ULg; Ponthot, Jean-Philippe ULg

in Proceedings of the 10th International Symposium on Computer Methods in Biomechanics and Biomedical Engineering. (2012, April)

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See detailToward a Risk Based Simulation for the Erection of an Offshore Windmill Park
Caprace, Jean-David ULg; Petcu, Cristian ULg; Velarde, Marco et al

in Proceeding of the 11th International Conference on Computer Applications and Information Technology in the Maritime Industries (2012, April)

Nowadays, EU shipyards that are facing difficulties due to the global crisis are often trying to diversify their activities. Some of them have already turned to the production of offshore windmill ... [more ▼]

Nowadays, EU shipyards that are facing difficulties due to the global crisis are often trying to diversify their activities. Some of them have already turned to the production of offshore windmill components. The installation and operation of offshore windmills are much more complex than onshore due to the distance and the depth of the water column. This creates problems specific to the production, installation and maintenance of offshore wind turbines. A tool for sequencing and installation simulation has been developed to assess the risks associated to the assembly of wind turbines parks via simulations of the different phases of construction considering various random phenomena such as weather conditions and uncertainties on production time. [less ▲]

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See detailBriefe an Casanova
Roggendorf, Cécile de; Viehöver, Vera ULg

E-print/Working paper (2012)

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See detailThe in utero and in the postnatal period growth in human newborns
Battisti, Oreste ULg

in Pediatrics & Therapeutics: Current Research (2012)

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See detailThe size and book-to-market effects revisited
Lambert, Marie ULg; Hübner, Georges ULg

E-print/Working paper (2012)

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