27 resultados para Serre, Pierre François Hercule, comte de, 1776-1824.
Resumo:
The clinical course of cystic fibrosis (CF) lung disease varies between patients bearing identical CFTR mutations. This suggests that additional genetic modifiers may contribute to the pulmonary phenotype. The highly conserved ancestral haplotype 8.1 (8.1AH), carried by up to one quarter of Caucasians, comprises linked gene polymorphisms on chromosome 6 that play a key role in the inflammatory response: LTA +252A/G; TNF -308G/A, HSP70-2 +1267A/G and RAGE -429T/C. As inflammation is a key component inducing CF lung damage, we investigated whether the 8.1AH represents a lung function modifier in CF.
Resumo:
Do the laws of quantum physics still hold for macroscopic objects - this is at the heart of Schrödinger’s cat paradox - or do gravitation or yet unknown effects set a limit for massive particles? What is the fundamental relation between quantum physics and gravity? Ground-based experiments addressing these questions may soon face limitations due to limited free-fall times and the quality of vacuum and microgravity. The proposed mission Macroscopic Quantum Resonators (MAQRO) may overcome these limitations and allow addressing such fundamental questions. MAQRO harnesses recent developments in quantum optomechanics, high-mass matter-wave interferometry as well as state-of-the-art space technology to push macroscopic quantum experiments towards their ultimate performance limits and to open new horizons for applying quantum technology in space. The main scientific goal is to probe the vastly unexplored ‘quantum-classical’ transition for increasingly massive objects, testing the predictions of quantum theory for objects in a size and mass regime unachievable in ground-based experiments. The hardware will largely be based on available space technology. Here, we present the MAQRO proposal submitted in response to the 4th Cosmic Vision call for a medium-sized mission (M4) in 2014 of the European Space Agency (ESA) with a possible launch in 2025, and we review the progress with respect to the original MAQRO proposal for the 3rd Cosmic Vision call for a medium-sized mission (M3) in 2010. In particular, the updated proposal overcomes several critical issues of the original proposal by relying on established experimental techniques from high-mass matter-wave interferometry and by introducing novel ideas for particle loading and manipulation. Moreover, the mission design was improved to better fulfill the stringent environmental requirements for macroscopic quantum experiments.
Resumo:
This article examines Pierre Bourdieu's sociology of the economy and his more recent politically engaged interventions on 'globalisation'. Many scholars regard these as not being in the same academic league as his classic studies on taste, academia, and state elites, etc., and, instead, dismiss them as a private matter or even, as the spleen of Pierre Bourdieu, the individual. This paper questions this disjunction of the 'academic' and 'politically engaged' sides of Pierre Bourdieu's work. First, it argues that his most recent interventions against a neo-liberal globalisation were the logical result of a particular definition of intellectual practice that had been outlined before in his sociology of the intellectual field. It then demonstrates that Bourdieu's economic sociology and critique of contemporary capitalism not only does not contradict his earlier research, but that it provides valuable and original insights into the current transformation of the political economy of the advanced capitalist countries. The paper concludes with a suggestion of how to strengthen the theoretical foundation of Bourdieu's analysis of contemporary capitalism by relating it to and making it compatible with alternative approaches in the tradition of critical political economy.
Resumo:
The sex ratio, age at maturation, fecundity, and seasonal development of gonads of pollan (Coregonus autumnalis) in Lough Neagh are described from samples collected between November 1997 and December 1999. Pollan reproductive ecology in the 1990s was similar to that found in the 1970s. Pollan egg size and fecundity differed between years but there were no long-term trends in fecundity despite considerable subsequent eutrophication of the lough and changes in the fish community.
Resumo:
This paper explores the relevance of Pierre Bourdieu’s ‘epistemic reflexivity’ for the sociology of religion, in particular by examining his neglected address to the French Association for the Sociology of Religion in 1982. Whilst sociologists of religion have addressed some issues of reflexivity in their practice, less attention has been paid to the crucial scientific requirement, highlighted by Bourdieu, to break from the ‘illusio’ of that field and thus avoid alignments with positions taken by religious actors themselves. As a result, many sociologists inevitably participate in religious contestations and stakes, whether or not they affirm or deny their own religious identification with those they study. Although Bourdieu’s address was a response to a particular national and historical form of the sociology of religion, we argue that it retains much significance today and may lead to fruitful debate within the discipline.
Resumo:
Acute myeloid leukemia (AML) may follow a JAK2-positive myeloproliferative neoplasm (MPN), although the mechanisms of disease evolution, often involving loss of mutant JAK2, remain obscure. We studied 16 patients with JAK2-mutant (7 of 16) or JAK2 wild-type (9 of 16) AML after a JAK2-mutant MPN. Primary myelofibrosis or myelofibrotic transformation preceded all 7 JAK2-mutant but only 1 of 9 JAK2 wild-type AMLs (P = .001), implying that JAK2-mutant AML is preceded by mutation(s) that give rise to a "myelofibrosis" phenotype. Loss of the JAK2 mutation by mitotic recombination, gene conversion, or deletion was excluded in all wild-type AMLs. A search for additional mutations identified alterations of RUNX1, WT1, TP53, CBL, NRAS, and TET2, without significant differences between JAK2-mutant and wild-type leukemias. In 4 patients, mutations in TP53, CBL, or TET2 were present in JAK2 wild-type leukemic blasts but absent from the JAK2-mutant MPN. By contrast in a chronic-phase patient, clones harboring mutations in JAK2 or MPL represented the progeny of a shared TET2-mutant ancestral clone. These results indicate that different pathogenetic mechanisms underlie transformation to JAK2 wild-type and JAK2-mutant AML, show that TET2 mutations may be present in a clone distinct from that harboring a JAK2 mutation, and emphasize the clonal heterogeneity of the MPNs.