58 research outputs found

    The implementation of the universal jurisdiction over torture in European countries

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    This dissertation presents an evaluation of universal jurisdiction over torture offenses. By doing so, it focuses on European states, in particular Belgium, France and the United Kingdom, all of which show a particular openness to prosecute torture offences on the basis of universal jurisdiction. It is demonstrated that Belgium, France and the United Kingdom have complied with the obligation set out in article 5(2) of the UN Torture Convention to establish universal jurisdiction over torture offences in their domestic legislation. They were, moreover, the first countries to conduct torture trials on this ground. However, 30 years after the signature of the Convention, such trials rarely occur because European prosecutors and courts face both practical and legal problems. I argue that some controversies have been solved, especially those relating to the non-retroactivity of the implemented legislation, the prohibition of amnesties, as well as the legality of the proceedings in the absence of the offender and of the operation of a principle of subsidiarity. The latter principle would give primacy jurisdiction at least to the territorial state that wants and is able to prosecute. However, the controversies relating to the legality of the universal jurisdiction over the torture of citizens of non States Parties, the ne bis in idem prohibition, the broad immunities and the establishment of efficient legislation and cooperation between states are far from being settled. I argue that the cooperation between states at the regional and international level is needed to solve the legal and practical issues about universal jurisdiction over torture, and to stop its differentiated applications. The forum state is also responsible to provide prosecution and police services with a suitable working context that has clear and efficient legislation and guidelines about universal jurisdiction over torture. Indeed, successful prosecution primarily devolve to these criminal practitioners' motivation

    Dewetting of thin polymer films: Influence of interface evolution

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    The dewetting dynamics of ultrathin polymer films, e.g. in the model system of polystyrene on a polydimethylsiloxane-covered substrate, exhibits interesting behavior like a fast decay of the dewetting velocity and a maximum in the width of the built-up rim in the course of time. These features have been recently ascribed to the relaxation of residual stresses in the film that stem from the nonequilibrium preparation of the samples. Recent experiments by Coppee et al. on PS with low molecular weight, where such stresses could not be evidenced, showed however similar behavior. By scaling arguments and numerical solution of a thin film viscoelastic model we show that the maximum in the width of the rim can be caused by a temporal evolution of the friction coefficient (or equivalently of the slip length), for which we discuss two possible mechanisms. In addition, the maximum in the width is affected by the sample age. As a consequence, knowing the temporal behavior of friction (or slip length) in principle allows to measure the aging dynamics of a polymer-polymer interface by simple dewetting experiments.Comment: 6 pages, 2 figure

    Analysis of the genome and transcriptome of Cryptococcus neoformans var. grubii reveals complex RNA expression and microevolution leading to virulence attenuation.

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    Cryptococcus neoformans is a pathogenic basidiomycetous yeast responsible for more than 600,000 deaths each year. It occurs as two serotypes (A and D) representing two varieties (i.e. grubii and neoformans, respectively). Here, we sequenced the genome and performed an RNA-Seq-based analysis of the C. neoformans var. grubii transcriptome structure. We determined the chromosomal locations, analyzed the sequence/structural features of the centromeres, and identified origins of replication. The genome was annotated based on automated and manual curation. More than 40,000 introns populating more than 99% of the expressed genes were identified. Although most of these introns are located in the coding DNA sequences (CDS), over 2,000 introns in the untranslated regions (UTRs) were also identified. Poly(A)-containing reads were employed to locate the polyadenylation sites of more than 80% of the genes. Examination of the sequences around these sites revealed a new poly(A)-site-associated motif (AUGHAH). In addition, 1,197 miscRNAs were identified. These miscRNAs can be spliced and/or polyadenylated, but do not appear to have obvious coding capacities. Finally, this genome sequence enabled a comparative analysis of strain H99 variants obtained after laboratory passage. The spectrum of mutations identified provides insights into the genetics underlying the micro-evolution of a laboratory strain, and identifies mutations involved in stress responses, mating efficiency, and virulence

    DUX4c Is Up-Regulated in FSHD. It Induces the MYF5 Protein and Human Myoblast Proliferation

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    Facioscapulohumeral muscular dystrophy (FSHD) is a dominant disease linked to contractions of the D4Z4 repeat array in 4q35. We have previously identified a double homeobox gene (DUX4) within each D4Z4 unit that encodes a transcription factor expressed in FSHD but not control myoblasts. DUX4 and its target genes contribute to the global dysregulation of gene expression observed in FSHD. We have now characterized the homologous DUX4c gene mapped 42 kb centromeric of the D4Z4 repeat array. It encodes a 47-kDa protein with a double homeodomain identical to DUX4 but divergent in the carboxyl-terminal region. DUX4c was detected in primary myoblast extracts by Western blot with a specific antiserum, and was induced upon differentiation. The protein was increased about 2-fold in FSHD versus control myotubes but reached 2-10-fold induction in FSHD muscle biopsies. We have shown by Western blot and by a DNA-binding assay that DUX4c over-expression induced the MYF5 myogenic regulator and its DNA-binding activity. DUX4c might stabilize the MYF5 protein as we detected their interaction by co-immunoprecipitation. In keeping with the known role of Myf5 in myoblast accumulation during mouse muscle regeneration DUX4c over-expression activated proliferation of human primary myoblasts and inhibited their differentiation. Altogether, these results suggested that DUX4c could be involved in muscle regeneration and that changes in its expression could contribute to the FSHD pathology

    Structure, Function, and Evolution of the Thiomonas spp. Genome

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    Bacteria of the Thiomonas genus are ubiquitous in extreme environments, such as arsenic-rich acid mine drainage (AMD). The genome of one of these strains, Thiomonas sp. 3As, was sequenced, annotated, and examined, revealing specific adaptations allowing this bacterium to survive and grow in its highly toxic environment. In order to explore genomic diversity as well as genetic evolution in Thiomonas spp., a comparative genomic hybridization (CGH) approach was used on eight different strains of the Thiomonas genus, including five strains of the same species. Our results suggest that the Thiomonas genome has evolved through the gain or loss of genomic islands and that this evolution is influenced by the specific environmental conditions in which the strains live

    Adaptation in toxic environments: Arsenic genomic islands in the bacterial genus Thiomonas:

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    Acid mine drainage (AMD) is a highly toxic environment for most living organisms due to the presence of many lethal elements including arsenic (As). Thiomonas (Tm.) bacteria are found ubiquitously in AMD and can withstand these extreme conditions, in part because they are able to oxidize arsenite. In order to further improve our knowledge concerning the adaptive capacities of these bacteria, we sequenced and assembled the genome of six isolates derived from the CarnoulĂšs AMD, and compared them to the genomes of Tm. arsenitoxydans 3As (isolated from the same site) and Tm. intermedia K12 (isolated from a sewage pipe). A detailed analysis of the Tm. sp. CB2 genome revealed various rearrangements had occurred in comparison to what was observed in 3As and K12 and over 20 genomic islands (GEIs) were found in each of these three genomes. We performed a detailed comparison of the two arsenic-related islands found in CB2, carrying the genes required for arsenite oxidation and As resistance, with those found in K12, 3As, and five other Thiomonas strains also isolated from CarnoulĂšs (CB1, CB3, CB6, ACO3 and ACO7). Our results suggest that these arsenic-related islands have evolved differentially in these closely related Thiomonas strains, leading to divergent capacities to survive in As rich environments

    On the mechanics of rim instabilities in viscoelastic polymer thin films

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    Dewetting of polystyrene thin films deposited onto nonwettable silicon wafers displays unusual dynamics and various morphologies. These instability patterns have been shown to be either discrete circular holes or surface undulations, in the case of nucleated dewetting or spinodal decomposition repectively. Here, we present the existence of a new rim instability, only effective in the elasticity dominated regime, leading to the propagation of fractures into the rim. The comparison with the viscous fingering instability suggests that, in addition to dewetting dynamics, the study of elasticity and viscous-dominated rim instabilities may lead to improved understanding of the influence of viscoelasticity, slippage and friction at the film/substrate interface

    On the mechanics of rim instabilities in viscoelastic polymer thin films

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    Non-native intragenic reversions selected from Saccharomyces cerevisiae cytochrome b-deficient mutants. Structural and functional features of the catalytic center N domain.

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    A total of 110 revertants have been isolated from two well-characterized cytochrome b deficient (mit-) mutants. The mit- mutations are located in an extramembranous loop linking the transmembrane alpha-helices IV and V of cytochrome b which has been postulated to be part of the catalytic center QN and therefore is assumed to be essential for the functioning of the bc1 complex. The molecular bases of the reversions were identified by sequencing the cytochrome b mRNAs. This allowed us to identify seven new structures of cytochrome b which are more or less compatible with its catalytic activity. The secondary mutations occurred either at the level of the original site mutation or at adjacent positions (region 204-208 of the polypeptide chain), or even at a distance of more than 150 amino acids (position 30) suggesting topological interaction between these two areas. All the revertants recovered cytochrome contents and phosphorylation efficiencies similar to the wild-type ones, albeit differences appeared in their specific growth rates and NADH respirations. The failure in bc1 complex functioning induced by the mutation S206L and its restoration by non native reversions are tentatively explained
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