0000000000331911
AUTHOR
W. Schneider
showing 5 related works from this author
Search for the t and b' quarks in hadronic decays of the Z0 boson
1990
We present a search for the third generation up type quark t and a possible fourth down type quark b' in hadronic Z0 decays observed in DELPHI at the LEP collider. For any scenario with a decay through the charged current or into a charged Higgs with a mass at least 6 GeV/c2 below the t and 3 GeVc2 below the b' mass, we set a lower limit for the t quark mass at 44.0 GeV/c2 and for the b' mass at 44.5 GeV/c2. For specific scenarios the mass limits are slightly higher, e.g. for charged current decays the limits are 44.5 and 45.0 GeV/c2 respectively, where all limits are given at a 95% confidence level. © 1990.
Postersitzung 9: Therapeutische Alternativen beim Harnleiterstein
1988
In der heutigen Therapie des Harnleitersteines dominiert eindeutig die ESWL. Bei erfolgloser ESWL oder bei speziellen Indikationen wie grose obere Harnleitersteine oder Steine in Projektion auf die Ileosacralfuge kommen die endourologischen Masnahmen zum Tragen. Die Indikationsbreite fur den Einsatz einer Schlinge ist insbesondere wegen der Gefahr der aufsteigenden Infekte nur noch sehr gering. Da selbst bei anatomischen Veranderungen diese haufig durch endourologische Masnahmen beseitigt werden konnen, steht die offene Schnittoperation im Rahmen der Therapie des Harnleitersteines an letzter Stelle.
The larva of Gomphus davidi Selys, 1887
1983
The female exuvia and last larval stage of Gomphus davidi Selys, 1887, a dragonfly endemic in the Middle East are described and figured. Distinctive characters of two sympatric Gomphus-species are provided.
Technical challenges in the construction of the steady-state stellarator Wendelstein 7-X
2013
The next step in the Wendelstein stellarator line is the large superconducting device Wendelstein 7-X, currently under construction in Greifswald, Germany. Steady-state operation is an intrinsic feature of stellarators, and one key element of the Wendelstein 7-X mission is to demonstrate steady-state operation under plasma conditions relevant for a fusion power plant. Steady-state operation of a fusion device, on the one hand, requires the implementation of special technologies, giving rise to technical challenges during the design, fabrication and assembly of such a device. On the other hand, also the physics development of steady-state operation at high plasma performance poses a challeng…
Prediction of mortality rate in acute type A dissection: the German Registry for Acute Type A Aortic Dissection score.
2020
Abstract OBJECTIVES The goal was to develop a scoring system to predict the 30-day mortality rate for patients undergoing surgery for acute type A aortic dissection on the basis of the German Registry for Acute Type A Aortic Dissection (GERAADA) data set and to provide a Web-based application for standard use. METHODS A total of 2537 patients enrolled in GERAADA who underwent surgery between 2006 and 2015 were analysed. Variable selection was performed using the R-package FAMoS. The robustness of the results was confirmed via the bootstrap procedure. The coefficients of the final model were used to calculate the risk score in a Web-based application. RESULTS Age [odds ratio (OR) 1.018, 95% …