Effects of gap anisotropy upon the electronic structure around a superconducting vortex

An isolated single vortex is considered within the framework of the quasiclassical theory. The local density of states around a vortex is calculated in a clean type II superconductor with an anisotropy. The anisotropy of a superconducting energy gap is crucial for bound states around a vortex. A characteristic structure of the local density of states, observed in the layered hexagonal superconductor 2H-NbSe2 by scanning tunneling microscopy (STM), is well reproduced if one assumes an anisotropic s-wave gap in the hexagonal plane. The local density of states (or the bound states) around the vortex is interpreted in terms of quasiparticle trajectories to facilitate an understanding of the rich electronic structure observed in STM experiments. It is pointed out that further fine structures and extra peaks in the local density of states should be observed by STM.Comment: 11 pages, REVTeX; 20 PostScript figures; An Animated GIFS file for the star-shaped vortex bound states is available at http://mp.okayama-u.ac.jp/~hayashi/vortex.htm

Das Portfolio als verbindendes Element in den Praxisphasen - Ergebnisse einer Befragung von Studierenden

Streblow L, Schöning A, Schwier V, Valdorf N. Das Portfolio als verbindendes Element in den Praxisphasen - Ergebnisse einer Befragung von Studierenden . In: Bolle R, ed. Eignung für den Lehrerberuf?. Schriftenreihe der Bundesarbeitsgemeinschaft Schulpraktische Studien. Vol 9. Leipzig: Leipziger Universitätsverlag; 2014: 59-83

Standards für Schulpraktische Studien in der ersten Phase der Lehrerbildung - ein Orientierungsrahmen

Weyland U, Schöning A, Schüssler R, Winkel J, Bandorski S. Standards für Schulpraktische Studien in der ersten Phase der Lehrerbildung - ein Orientierungsrahmen. In: Bolle R, ed. Schulpraktische Studien 2015 zwischen Standards, Alltag und Zukunftsvisionen. Schriftenreihe der Bundesarbeitsgemeinschaft Schulpraktische Studien. Vol 10. Leipzig: Leipziger Universitätsverlag; 2015: 5-16

dynaklim - Dynamische Anpassung der Emscher-Lippe-Region (Ruhrgebiet) an die Auswirkungen des Klimawandels

Background-As recently demonstrated, random allocation to rosuvastatin results in large relative risk reductions for first cardiovascular events among apparently healthy men and women with low levels of low-density lipoprotein cholesterol but elevated levels of high-sensitivity C-reactive protein. However, whether the absolute risk reduction among such individuals justifies wide application of statin therapy in primary prevention is a controversial issue with broad policy and public health implications. Methods and Results-Absolute risk reductions and consequent number needed to treat (NNT) values were calculated across a range of end points, timeframes, and subgroups using data from Justification for the Use of statins in Prevention: an Intervention Trial Evaluating Rosuvastatin (JUPITER), a randomized evaluation of rosuvastatin 20 mg versus placebo conducted among 17 802 apparently healthy men and women with low-density lipoprotein cholesterol = 2 mg/L. Sensitivity analyses were also performed to address the potential impact that alternative statin regimens might have on a similar primary prevention population. For the end point of myocardial infarction, stroke, revascularization, or death, the 5-year NNT within JUPITER was 20 (95% CI, 14 to 34). All subgroups had 5-year NNT values for this end point below 50; as examples, 5-year NNT values were 17 for men and 31 for women, 21 for whites and 19 for nonwhites, 18 for those with body mass index 300). Conclusions-Absolute risk reductions and consequent NNT values associated with statin therapy among those with elevated high-sensitivity C-reactive protein and low low-density lipoprotein cholesterol are comparable if not superior to published NNT values for several widely accepted interventions for primary cardiovascular prevention, including the use of statin therapy among those with overt hyperlipidemi