188 resultados para politique de R

em QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast


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European integration remains a 'non-cleavage' in relation to the Lipset-Rokkan model, as it has not produced significant restructurings of national party systems. Yet, while not effecting the terms of interparty competition, Europe has nevertheless come to occupy an increasingly large place in national political debates. Since the early 1990s, Euroscepticisms have taken root, to varying degrees, across the entire continent. This article analyses the rise of these Eurosceptic tendencies, examining the phenomenon in terms of both the Europeanisation of national political life and the wider emergence of forms of protest politics. The analysis demonstrates how European questions have been absorbed into established party structures, while at the same time pointing towards a renewed research agenda which pays greater attention both to the discursive dimension of political life and to the roles played by national parties as European actors.

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A previously unreported alcohol dehydrogenase enzyme in the mutant soil bacterium Pseudomonas putida UV4 catalyses the reduction of 2-, 3- and 4-acylpyridines to afford the corresponding (S)-1-pyridyl alkanols, with moderate to high e.e., whilst under the same conditions 2,6-diacetylpyridine is readily converted to the corresponding enantiopure C2-symmetric (S,S)-diol in one step. In contrast, the toluene dioxygenase enzyme in the same organism catalyses the hydroxylation of 2- and 3-alkylpyridines to (R)-1-(2-pyridyl) and (R)-1-(3-pyridyl)alkanols. This combination of oxidative and reductive biotransformations thus provides a method for preparing both enantiomers of chiral 1-pyridyl alkanols using one biocatalyst.

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