964 resultados para Harmonic drives.


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This paper evaluates which factors influence the European Parliament’s decision-making, based on a case study: the 2012 proposal for a General Data Protection Regulation. Following a ‘competitive testing’ approach, six different hypotheses are successively challenged in order to explain why the EP adopted a fundamental rights- oriented position. The first three factors relate to the internal organization of the EP’s work, i.e. the role played by the lead committee, by the rapporteur and by secretariat officials. The last three factors are external-related, i.e. lobbying activities, outside events and institutional considerations. Based on the empirical findings, it is argued that even though the EP’s position is due to a range of various factors, some of them prove to be more relevant than others, in particular the rapporteur and lead committee’s roles. New institutionalism theories also provide a comprehensive explanation for the EP’s willingness to achieve a fundamental rights oriented outcome.

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‘A bizarre phenomenon,’ Der Spiegel concluded, after trying to figure out why young people left Germany to become foreign fighters in Syria. The magazine painted a portrait of two thirty-somethings with similar backgrounds and the same hobby – martial arts. One became director of a martial arts school in Hamburg, the other became a terrorist poster boy in Syria.2

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CENP‐A containing nucleosomes epigenetically specify centromere position on chromosomes. Deposition of CENP‐A into chromatin is mediated by HJURP, a specific CENP‐A chaperone. Paradoxically, HJURP binding sterically prevents dimerization of CENP‐A, which is critical to form functional centromeric nucleosomes. A recent publication in The EMBO Journal (Zasadzińska et al, 2013) demonstrates that HJURP itself dimerizes through a C‐terminal repeat region, which is essential for centromeric assembly of nascent CENP‐A.

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How mechanical and biological processes are coordinated across cells, tissues, and organs to produce complex traits is a key question in biology. Cardamine hirsuta, a relative of Arabidopsis thaliana, uses an explosive mechanism to disperse its seeds. We show that this trait evolved through morphomechanical innovations at different spatial scales. At the organ scale, tension within the fruit wall generates the elastic energy required for explosion. This tension is produced by differential contraction of fruit wall tissues through an active mechanism involving turgor pressure, cell geometry, and wall properties of the epidermis. Explosive release of this tension is controlled at the cellular scale by asymmetric lignin deposition within endocarp b cells-a striking pattern that is strictly associated with explosive pod shatter across the Brassicaceae plant family. By bridging these different scales, we present an integrated mechanism for explosive seed dispersal that links evolutionary novelty with complex trait innovation.

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Corrected in author's ms.

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Project no. MO-011.

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Mode of access: Internet.

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Reprinted from the Proceedings of the Royal Society of Edinburgh, session 1905-1906, v. 76, pt. 4.

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"A paper read before the National Association of Cotton Manufacturers at its Ninety-first Meeting, Manchester, Vermont, September 29, 1911."

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Mode of access: Internet.

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W.A. Otis and E.H. Clark, architects. O.C. Simonds & Co., landscape gardeners. Unsigned. 70 cm. x 74 cm. Scale: 1"=100' [from photographic copy by Lance Burgharrdt]

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Red, black ink on linen; signed; 112 x 72 cm; Scale: 1" = 100' [from photographic copy by Lance Burgharrdt]

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Pencil, ink on linen; signed; 114 x 42 cm. Scale: 1"=50' [from photographic copy by Lance Burgharrdt]