10 research outputs found
Bilateral Traumatic Abducens Nerve Palsy Associated With Skull Base Fracture -Case Report-
Critical roles of molecular dynamics in the superior mechanical properties of isotactic-poly (1-butene) elucidated by solid-state NMR
Isotactic-poly(1-butene) (iPB1) shows superior mechanical properties after crystalâcrystal transitions. Recently, Miyoshi et al. found that crystalline stems in metastable tetragonal crystal perform uniaxial rotational diffusions accompanying side-chain conformational transitions in the fast motional limit (correlation time, ăÏcă 10 s). In addition, lamellar thickness, ălă of iPB1 and a low isotacticity iPB1 (low_iPB1) with ămmmmă=78%, respectively, were investigated by small-angle X-ray scattering. The low_iPB1 sample shows very week supercooling dependence of ălă (âŒ5 nm), whereas iPB1 shows strong supercooling dependence of ălă (10â28 nm). On the basis of molecular dynamics and ălă results, molecular dynamics effects on structures and unique mechanical property of iPB1 are discussed
Critical roles of molecular dynamics in the superior mechanical properties of isotactic-poly(1-butene) elucidated by solid-state NMR
Measurement of the one prong hadronic tau branching ratios at LEP
The branching ratios of the \tau^- -> h^- \nu_\tau, \tau^- -> h^- \pi^0
\nu_\tau, \tau^- -> h^- >=2 \pi^0 \nu_\tau decays have been measured using the
1991-1995 data recorded with the OPAL detector at LEP. These branching ratios
are measured simultaneously using three selection criteria and are found to be
BR(\tau^- -> h^- \nu_\tau) = (11.98 +/- 0.13 +/- 0.16)%
BR(\tau^- -> h^- \pi^0 \nu_\tau) = (25.89 +/- 0.17 +/- 0.29)%
BR(\tau^- -> h^- >=2 \pi^0 \nu_\tau) = ( 9.91 +/- 0.31 +/- 0.27)%
where the first error is statistical and the second is systematic.Comment: 23 pages, LaTeX, uses a4p.sty, 9 eps figures included, submitted to
Zeit. f. Physi
What can Examining the Psychology of Nationalism Tell Us About Our Prospects for Aiming at the Cosmopolitan Vision?
Measuring sedimentation in tidal marshes:a review on methods and their applicability in biogeomorphological studies
<p>It is increasingly recognised that interactions between geomorphological and biotic processes control the functioning of many ecosystem types as described e.g. by the ecological theory of ecosystem engineering. Consequently, the need for specific bio-geomorphological research methods is growing recently. Much research on bio-geomorphological processes is done in coastal marshes. These areas provide clear examples of ecosystem engineering as well as other bio-geomorphological processes: Marsh vegetation slows down tidal currents and hence stimulates the process of sedimentation, while vice versa, the sedimentation controls ecological processes like vegetation succession. This review is meant to give insights in the various available methods to measure sedimentation, with special attention to their suitability to quantify bio-geomorphological interactions. The choice of method used to measure sedimentation is important to obtain the correct parameters to understand the biogeomorphology of tidal salt marshes. This review, therefore, aims to be a tool for decision making regarding the processes to be measured and the methods to be used. We, subdivide the methods into those measuring suspended sediment concentration (A), sediment deposition (B), accretion (C) and surface-elevation change (D). With this review, we would like to further encourage interdisciplinary studies in the fields of ecology and geomorphology.</p>