References of "2008"
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See detailLong-term evolution of the North Anatolian fault (Turkey)
Hubert, Aurelia ULg; Van Der Woerd, J.; King, G. et al

in Geological Society of London (Special publication : Geodynamics of Collision and Collapse at the Africa-Arabia-Eurasia Subduction Zone, Editor R. Govers) (2008)

The deformation and 40Ar-39Ar dating of recent volcanism that remarkably sits across the North Anatolian Fault eastern termination in Turkey, together with previous studies, put strong constraints on the ... [more ▼]

The deformation and 40Ar-39Ar dating of recent volcanism that remarkably sits across the North Anatolian Fault eastern termination in Turkey, together with previous studies, put strong constraints on the long- term evolution of the fault. We argue that after a first phase of 10 Ma, characterized by a slip rate of about 3 mm/yr, and during which most of the trace was established, the slip rate jumped to about 20 mm/yr on average over the last 2.5 Ma, without substantial increase of the fault length. The transition correlates with a change in the geometry at the junction with the East Anatolian Fault that makes the extrusion process more efficient. [less ▲]

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See detailEvaluation of tropospheric and stratospheric ozone trends over Western Europe from ground-based FTIR network observations.
Vigouroux, C.; De Mazière, M.; Demoulin, Philippe ULg et al

in Atmospheric Chemistry and Physics (2008), 362(8), 6865-6886

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See detailInfluence of nitrogen fertilizer treatments on soft wheat starch characteristics
Massaux, Carine; Sindic, Marianne ULg; Paridaens, A. M. et al

in Weegels, P. L.; Courtin, C. M.; Arrachid, A. (Eds.) et al Consummer driven cereal innovation: where science meets industry (2008)

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See detailVente par l'administrateur provisoire de l'immeuble légué par la personne protégée - modification de l'article 1038 du Code civil
Leleu, Yves-Henri ULg; Swennen, F.

in Travaux du comité d'études et de législation de la Fédération Royale du Notariat Belge. Année 2006-2007 (2008)

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See detailEarly and transient reverse transcription during primary deltaretroviral infection of sheep.
Pomier, Carole; Alcaraz, Maria Teresa Sanchez; Debacq, Christophe et al

in Retrovirology (2008), 5

BACKGROUND: Intraindividual genetic variability plays a central role in deltaretrovirus replication and associated leukemogenesis in animals as in humans. To date, the replication of these viruses has ... [more ▼]

BACKGROUND: Intraindividual genetic variability plays a central role in deltaretrovirus replication and associated leukemogenesis in animals as in humans. To date, the replication of these viruses has only been investigated during the chronic phase of the infection when they mainly spread through the clonal expansion of their host cells, vary through a somatic mutation process without evidence for reverse transcriptase (RT)-associated substitution. Primary infection of a new organism necessary involves allogenic cell infection and thus reverse transcription. RESULTS: Here we demonstrate that the primary experimental bovine leukemia virus (BLV) infection of sheep displays an early and intense burst of horizontal replicative dissemination of the virus generating frequent RT-associated substitutions that account for 69% of the in vivo BLV genetic variability during the first 8 months of the infection. During this period, evidence has been found of a cell-to-cell passage of a mutated sequence and of a sequence having undergone both RT-associated and somatic mutations. The detection of RT-dependent proviral substitution was restricted to a narrow window encompassing the first 250 days following seroconversion. CONCLUSION: In contrast to lentiviruses, deltaretroviruses display two time-dependent mechanisms of genetic variation that parallel their two-step nature of replication in vivo. We propose that the early and transient RT-based horizontal replication helps the virus escape the first wave of host immune response whereas somatic-dependent genetic variability during persistent clonal expansion helps infected clones escape the persistent and intense immune pressure that characterizes the chronic phase of deltaretrovirus infection. [less ▲]

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See detailRestauration des potentialités de sols dégradés à l’aide du zaï et du compost dans le Yatenga (Burkina Faso)
Sawadogo, H.; Bock, Laurent ULg; Lacroix, D. et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2008), 12(3),

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See detailAn integrated mathematical modelling framework for the study of bone fracture healing
Geris, Liesbet ULg; Vander Sloten, Jos; Van Oosterwyck, Hans

in Journal of Biomechanics (2008), 41

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See detailFitness And Genetic Variation Of Viola Calaminaria, An Endemic Metallophyte: Implications Of Population Structure And History
Bizoux, Jean-Philippe ULg; Daïnou, Kasso ULg; Raspe, O. et al

in Plant Biology (2008), 10(6), 684-693

We investigated variations in genetic diversity and plant fitness in a rare endemic metallophyte of calamine soils, Viola calaminaria, in relation to population size, population connectivity and ... [more ▼]

We investigated variations in genetic diversity and plant fitness in a rare endemic metallophyte of calamine soils, Viola calaminaria, in relation to population size, population connectivity and population history in order to evaluate and discuss potential conservation strategies for the species. Mean population genetic diversity (Hs = 0.25) of V. calaminaria was similar to endemic non-metallophyte taxa. Twenty-one per cent of the genetic variation was partitioned among populations and a low (9%) but significant differentiation was found among geographical regions. Our results did not support the hypothesis that the acquisition of metal tolerance may result in reduced genetic diversity, and suggested that strict metallophytes do not exhibit higher inter-population differentiation resulting from scattered habitats. There were no relationships between population genetic diversity and population size. Significant correlations were found between plant fitness and (i) population size and (ii) connectivity index. Recently-founded populations exhibited the same level of genetic diversity as ancient populations and also possessed higher plant fitness. There was no indication of strong founder effects in recently-established populations. The results suggest that the creation of habitats through human activities could provide new opportunities for conservation of this species. [less ▲]

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See detailOrigin of Saturn's aurora: Simultaneous observations by Cassini and the Hubble Space Telescope
Bunce, E. J.; Arridge, C. S.; Clarke, J. T. et al

in Journal of Geophysical Research (2008), 113(A9),

Outer planet auroras have been imaged for more than a decade, yet understanding their physical origin requires simultaneous remote and in situ observations. The first such measurements at Saturn were ... [more ▼]

Outer planet auroras have been imaged for more than a decade, yet understanding their physical origin requires simultaneous remote and in situ observations. The first such measurements at Saturn were obtained in January 2007, when the Hubble Space Telescope imaged the ultraviolet aurora, while the Cassini spacecraft crossed field lines connected to the auroral oval in the high-latitude magnetosphere near noon. The Cassini data indicate that the noon aurora lies in the boundary between open- and closed-field lines, where a layer of upward-directed field-aligned current flows whose density requires downward acceleration of magnetospheric electrons sufficient to produce the aurora. These observations indicate that the quasi-continuous main oval is produced by the magnetosphere-solar wind interaction through the shear in rotational flow across the open-closed-field line boundary. [less ▲]

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See detailEukaryotic complex I: functional diversity and experimental systems to unravel the assembly process
Remacle, Claire ULg; Barbieri, Rosario; Cardol, Pierre ULg et al

in Molecular Genetics & Genomics (2008), 280

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See detailLe purisme enfantin au prisme du discours spontané
Meunier, Deborah ULg

in Français Moderne (Le) (2008), LXXXVI/1

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See detail"Strategies of life detection": Summary and outlook
Botta, Oliver; Bada, Jeffrey L; Gomez-Elvira, Javier et al

in Space Science Reviews (2008), 135(1-4), 371-380

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See detailIron microbial mats in Modern and Phanerozoic environments
Baele, J. M.; Boulvain, Frédéric ULg; De Jong, J. et al

in Instruments, Methods and Missions for Astrobioçlogy- Proc. of SPIE (2008), 7097

The recognition of iron microbial mats in terrestrial environments is of great relevance for the search for extraterrestrial life, especially on mars where significant iron minerals were identified in the ... [more ▼]

The recognition of iron microbial mats in terrestrial environments is of great relevance for the search for extraterrestrial life, especially on mars where significant iron minerals were identified in the subsurface. Most researches focused on very ancient microbial mats (e.g. BIFs) since they formed on Earth at a time where similar conditions are supposed to have prevailed on Mars too. However, environmental proxies are often difficult to use for these deposits on Earth which, in addition, may be heavily transformed due to diagenesis or even metamorphism. Here we present modern and phanerozoic iron microbial mats occurrences illustrating the wide variety of environments in which they form, including many marine settings, ponds, creeks, caves, volcanoes, etc. Contrarily to their Precambrian counterparts, Modern and Phanerozoic deposits are usually less affected by diagenesis and the environmental conditions likely to be better constrained. Therefore, their investigation may help for the search for morphological and geochemical biosignatures (e.g. iron isotopes) in ancient iron microbial occurrences on Earth but also on other Planets. In particular, many of the case studies presented here show that microstromatolithe-like morphologies may be valuable targets for screening potential biosignatures in various rock types. [less ▲]

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See detailProject Office - Final report
Warnant, René ULg

Report (2008)

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See detailOn the evolution and expression of Chlamydomonas reinhardtii nucleus-encoded transfer RNA genes
Cognat, Valerie; Deragon, Jean*-Marc; Vinogradova, Elizaveta et al

in Genetics (2008), 179(1), 113-123

In Chlamydomonas reinhardtii, 259 tRNA genes were identified and classified into 49 tRNA isoaccepting families. By constructing phylogenetic trees, we determined the evolutionary history for each tRNA ... [more ▼]

In Chlamydomonas reinhardtii, 259 tRNA genes were identified and classified into 49 tRNA isoaccepting families. By constructing phylogenetic trees, we determined the evolutionary history for each tRNA gene family. The majority of the IRNA sequences are more closely related to their plant counterparts than to animals ones. Northern experiments also permitted LIS to show that at least one member of each IRNA isoacceptor family is transcribed and correctly processed in vivo. A short stretch of T residues known to be a signal for termination of polymerase III transcription was found downstream of most IRNA genes. It allowed us to propose that the vast majority of the IRNA genes are expressed and to confirm that numerous IRNA genes separated by short spacers are indeed cotranscribed. Interestingly, in silico analyses and hybridization experiments show that the cellular IRNA abundance is correlated with the number of tRTNA genes and is adjusted to the codon usage to optimize translation efficiency. Finally, we studied the origin of SINEs, short interspersed elements related to tRNAs, whose presence in Chlamydomonas is exceptional. Phylogenetic analysis strongly suggests that tRNA(Asp)-related SINEs originate front a prokaryotic-type IRNA either horizontally transferred from a bacterium or originally present in mitochondria or chloroplasts. [less ▲]

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See detailDe onzin van het vanzelfsprekende beeld
Meesters, Gert ULg

in Freespace Nieuwzuid (2008), (31), 47-56

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