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See detailEffets de la pression partielle en hydrogène sur la production anaérobie de bioH2 par une bactérie chimiotrophe du genre Clostridium dans un nouveau réacteur à cylindre horizontal rotatif.
Beckers, Laurent ULg; Hiligsmann, Serge ULg; Hamilton, Christopher ULg et al

in Récents Progrès en Génie des Procédés (2011, December), 101

Hydrogen is widely considered as the most promising energetic carrier. At an industrial scale, steam reforming of methane is currently the major hydrogen producing process. But it may also be produced ... [more ▼]

Hydrogen is widely considered as the most promising energetic carrier. At an industrial scale, steam reforming of methane is currently the major hydrogen producing process. But it may also be produced from renewable biomass. Indeed, the fermentative production of hydrogen from renewable biomass using anaerobic bacteria could at least partially reduce our dependence on fossil fuel, decrease the carbon dioxide emissions and produce “green” energy. It offers the potential production of usable hydrogen from a variety of renewable resources such as carbohydrates wastes from agriculture or agro-food industries. This technology is based on anaerobic fermentation, called dark fermentation, by chemotrophic bacteria. The investigations carried out at CWBI involve selection and characterization of bacteria strains able to produce biohydrogen efficiently and with a wide range of substrate. The selected strains at the laboratory has been characterised as Clostridium sp. In order to produce hydrogen at high yields and production rates, the biotechnological process needs to be further optimized and efficient bioreactors must be designed. At CWBI, a new reactor called “horizontal rotating cylinder bioreactor” allows the production of biohydrogen from glucose with our Clostridium sp. strain with a high yield and production rate. This reactor, working continuously, has an internal volume of 2.3l but a working volume (liquid phase) of 300ml. Firstly, it enhances the hydrogen production rate by partially fixing the bacteria on the porous cylinder and thus increasing the cell concentration in the bioreactor. Secondly, the rotative cylinder enables efficient gas transfer (mainly hydrogen) from the liquid phase where it is produced by the bacteria. This is an important way to enhance hydrogen production yield by allowing the bacteria metabolism to shift in a fermentation type that produces more hydrogen. This was confirmed by increasing or decreasing the total pressure in the bioreactor and observing the influence of hydrogen production. The liquid to gas hydrogen transfer is possibly an important factor to enhance the biogas production. Our investigation confirmed this by testing different liquid to gas transfer condition in BHP test (batch fermentation in 250ml serum bottles).This was made either by decreasing total and partial pressure or by increasing the mixing state of the media. Our work concludes the importance of providing good liquid to gas transfers in the biohydrogen producing reactors to enhance the hydrogen production and reach higher yields and production rates. [less ▲]

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See detailLayering of Size and Type Noun Constructions in English
Brems, Lieselotte ULg

Book published by Mouton de Gruyter - 1st (2011)

On the basis of synchronic and diachronic data analysis, the volume takes a close look at the synchronic layers of binominal size noun and type noun uses (a bunch/a load of X; a sort of X; a Y type of X ... [more ▼]

On the basis of synchronic and diachronic data analysis, the volume takes a close look at the synchronic layers of binominal size noun and type noun uses (a bunch/a load of X; a sort of X; a Y type of X) and reconsiders the framework of grammaticalization in view of issues raised by the phrases under discussion. As a result, a construction grammar-approach to grammaticalization is developed which does justice to the syntagmatic lexical, or collocational, reclustering observed in the data within an eclectic cognitive-functional approach. Prices subject to change. Shipping costs will be added. Current pricing is based [less ▲]

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See detailPreliminary insight into seed effectiveness of western lowland gorilla (Gorilla g.gorilla)
Petre, Charles-Albert ULg; Tagg, Nikki; Beudels-Jamar, Roseline et al

in Primate Tidings (2011, December), 25

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See detailLa sémiotique, entre autres / Semiotics, among others
Dondero, Maria Giulia ULg; Provenzano, François ULg; Klinkenberg, Jean-Marie ULg et al

in Signata. Annales des Sémiotiques = Annals of Semiotics (2011), 2

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See detailEvidence on the Determinants of Innovation in a Sample of Spanish firms
Artige, Lionel ULg

E-print/Working paper (2011)

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See detailEN1198-5 training : computation examples
Cerfontaine, Benjamin ULg

Conference given outside the academic context (2011)

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See detailLa puissance: débat autour des jeux et enjeux du pouvoir
Wintgens, Sophie ULg; Piet, Grégory ULg

Book published by Editions de l'Université de Liège (2011)

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See detailIs hepatitis E virus zoonotic?
Thiry, Damien ULg

Conference (2011, December)

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See detailDynamique forestière et enrichissements forestiers. Site de Mbang. Rapport n° 7.
Doucet, Jean-Louis ULg; Amandé, Jean; Essik, Jean-Marie et al

Report (2011)

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See detailMorphological and histological studies of sheep’s brain
Salouci, Moustafa ULg; Engelen, Virginie; Jacqmot, Olivier ULg et al

Poster (2011, December)

Introduction: The study of normal structures of the sheep’s brain is very important to understand pathological changes caused by the bluetongue virus in the fetus’s brain at various stages of the ... [more ▼]

Introduction: The study of normal structures of the sheep’s brain is very important to understand pathological changes caused by the bluetongue virus in the fetus’s brain at various stages of the gestation. Bluetongue is an arthropod-borne viral disease of domestic and wild ruminants. The serotype 8 is responsible for outbreaks in Northern Europe in 2006. This virus causes lesions in the brain of fetuses as hydrancephaly and porencephaly. The aim of this work is to improve knowledge of anatomy and histology of the central nervous system of the sheep. Methods: Seven heads of adult sheep and one from a fetus aged 4,5 months were used. All heads were first opened in the frontal area using bone’s saw and immerged in a formalin solution for 10 days. After a good fixation, the brains were extracted and sectioned. Transversal, frontal and sagittal sections were realized. The sections of two brains were stained with Berlin-blue and treated to be embedded in methylmetacrylate for gross morphology. The different parts of the 6 resting brains were then embedded in paraffin, cut and the histological sections were stained with haematoxylin/eosin, cresyl violet or by use of silver impregnation. Results: Gross morphological examination of the brains embedded in methylmetacrylate showed the detailed anatomy of the different parts. The staining with haematoxylin/eosin permitted to differentiate the grey matter, the different nucleus and the layers of cerebral and cerebellum cortex. The cresyl violet technique permitted to visualize the Nissl bodies and the silver impregnation revealed nerve fibers. In the fetus brain, blood vessels were very numerous in the brainstem, the cerebellum and the cerebrum. The grey matter was less organized and looser. Conclusion: This work establishes an anatomical and histological approach allowing future studies in ovine fetuses with and without brain lesions potentially caused by the bluetongue virus. [less ▲]

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See detailPréface [à "Blancs et Noirs"]
Dejasse, Erwin ULg

in Blancs et Noirs (2011)

Foreword of a portfolio devoted to the jazz by Argentinian artist José Muñoz

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See detailIntegration of quality indices of distribution in benchmarking analysis
Coelli, Tim; Gautier, Axel ULg; Perelman, Sergio ULg et al

Report (2011)

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See detailGolden-headed lion tamarin research in the 21st century: Recent advances and potential areas of future research
Raghunathan, Poornima ULg

in Neotropical Primates (2011), 18(2), 72-76

On 7 and 8 December 2011, students, researchers, and conservationists with a vested interest in golden-headed lion tamarins (Leontopithecus chrysomelas; GHLTs) gathered at the State University of Santa ... [more ▼]

On 7 and 8 December 2011, students, researchers, and conservationists with a vested interest in golden-headed lion tamarins (Leontopithecus chrysomelas; GHLTs) gathered at the State University of Santa Cruz (UESC; Ilhéus, Bahia, Brazil) for the symposium `Golden-Headed Lion Tamarin Research in the 21st Century: Recent Advances and Potential Areas of Future Research´ with the aim of sharing recent work and discussing potential future avenues for research. Within the last 5 years, several doctoral dissertations and masters theses were completed that focused on the biology, ecology, and/or conservation of GHLTs in addition to the ongoing work of established scientists who have devoted their professional lives to the study of this species and the Atlantic Forest. However, language barriers and the fact that many members of the GHLT community are based at institutions throughout the world have complicated widespread access to these results and collaborations among researchers. The primary goals of this symposium were to (1) promote the exchange of existing information, (2) contribute towards a better synchronization of research efforts, and (3) identify important steps for more efficient/ collaborative conservation efforts for GHLTs and their habitat. This symposium brought together 30 participants from 12 institutions in Brazil, Belgium and the USA and allowed for the dissemination of information to the global GHLT community, compilation of recent advances in research, and identification of gaps in knowledge of GHLT biology, ecology and conservation, which ultimately fostered discussions on how attendees could collaborate to fill knowledge gaps. [less ▲]

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See detailLève-toi et entreprends !...
Choffray, Jean-Marie ULg

E-print/Working paper (2011)

Quelques pistes de réflexion pour faire face, avec solidarité, créativité, intelligence, et détermination, aux défis humains et économiques que pose la reconversion industrielle d'ArcelorMittal.

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See detailThe Future of Public Enterprises: Contributions to a new Discourse
Fecher-Bourgeois, Fabienne ULg; Florio, Massimo

in Annals of Public and Cooperative Economics = Annales de l'Economie Publique, Sociale et Coopérative (2011), 82(4), 361-516

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See detailIntegration of quality indices of distribution in benchmarking analysis
Coelli, Tim; Gautier, Axel ULg; Perelman, Sergio ULg et al

Report (2011)

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See detailThe Clinical characteristics of pituitary adenomas in patients with primary hyperparathyroidism (PHPT) with and without MEN1 mutation
Rostomyan, Liliya ULg; Tichomirowa, M.; Kirdyankina, N. et al

in ENEA Munich - abstract book (2011, December)

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See detailAURALIAS: an audio-immersive system for auralizing room acoustics projects
Embrechts, Jean-Jacques ULg

Conference (2011, December)

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