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The well-established calibration techniques for loop antennas have in common that either some parts of the antenna design or the field pattern of a standard field must be well known or fully theoretically describable. In this paper a pure metrological approach, circumventing these requirements is introduced and verified. It is based on a generic two port network model for loop antennas and a traceable...
Hintergrund. Die Otitis externa necroticans stellt auch heute noch ein lebensbedrohliches Krankheitsbild dar.Die blichen Therapiekonzepte mit Antibiose, Lokalbehandlung sowie ggf. Exzision der nekrotischen Gewebeanteile fhren oft nicht zur Heilung der Patienten, sodass bei fortgeschrittenem Erkrankungsbild hufig mit schweren Funktionsausfllen bis zum letalen Verlauf gerechnet werden muss. Patienten...
The enantioselective cyclopropanation and aziridination of styrene using chiral tartrate-derived bis-oxazoline ligands 1, 6, and 7 is reported. The effects of variation of the size of the oxazoline substituent (R 1 ) and the size of the diazoacetate ester substituent (R 2 ) on the level and sense of enantioselection is described.
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