Search results for "Small deviations"
showing 4 items of 4 documents
Analyse zweier charakteristischer Verteilungen von Polystyrol durch Kolonnenfraktionierung
1962
Zwei Polystyrole werden radikalisch derart polymerisiert, das die Molekulgrose einmal durch Kombination (Polystyrol A), das andere Mal durch Ubertragung (Polystyrol B) bestimmt ist. Die hierbei zu erwartenden Molekulargewichtsverteilungen konnen durch die allgemeine Koppelungsgleichung (1) mit k = 2 bzw. k = 1 beschrieben werden, wobei kleine Abweichungen, die aus der Kinetik folgen, rechnerisch berucksichtigt werden. Die Polystyrole werden in einer Kolonne nach BAKER-WILLIAMS fraktioniert und das Ergebnis nach 3 Methoden ausgewertet. Aus der Fraktionentabelle last sich direkt Pw und Pn ausrechnen, wenn die 1. Fraktion eine entsprechende Korrektur erfahrt. Verschiedene graphische Auswertung…
Models for neutrino mass with discrete symmetries
2010
Discrete non-abelian flavor symmetries give in a natural way tri-bimaximal (TBM) mixing as showed in a prototype model. However neutrino mass matrix pattern may be very different from the tri-bimaximal one if small deviations of TBM will be observed. We give the result of a model independent analysis for TBM neutrino mass pattern.
QA of dynamic MLC based on EPID portal dosimetry.
2010
Abstract Purpose Dynamic delivery of intensity modulated beams (dIMRT) requires not only accurate verification of leaf positioning but also a control on the speed of motion. The latter is a parameter that has a major impact on the dose delivered to the patient. Time consumed in quality assurance (QA) procedures is an issue of relevance in any radiotherapy department. Electronic portal imaging dosimetry (EPID) can be very efficient for routine tests. The purpose of this work is to investigate the ability of our EPID for detecting small errors in leaf positioning, and to present our daily QA procedures for dIMRT based on EPID. Methods and materials A Varian 2100 CD Clinac equipped with an 80 …
Measurement of the Fluctuations in the Number of Muons in Extensive Air Showers with the Pierre Auger Observatory
2021
The successful installation, commissioning, and operation of the Pierre Auger Observatory would not have been possible without the strong commitment and effort from the technical and administrative staff in Malargue. We are very grateful to the following agencies and organizations for financial support: Argentina-Comision Nacional de Energia Atomica, Agencia Nacional de Promocion Cientifica y Tecnologica (ANPCyT), Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Gobierno de la Provincia de Mendoza, Municipalidad de Malargue, NDM Holdings and Valle Las Lenas; in gratitude for their continuing cooperation over land access; Australia-the Australian Research Council; Brazil…