Christian Lechner

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The objective of this study was to investigate spectral Doppler ultrasound (US) for monitoring extracorporeal shock-wave lithotripsy (ESWL). In vitro experiments with model stones showed that Doppler spectra acquired after a shock wave hit result in a high peak followed by a decaying signal. The duration of decay was dependent on shock-wave energy, stone(More)
Convergence – Innovation and Change of Market Structures between Television and Online Services Michael Dowling , Christian Lechner & Bodo Thielmann To cite this article: Michael Dowling , Christian Lechner & Bodo Thielmann (1998) Convergence – Innovation and Change of Market Structures between Television and Online Services, Electronic Markets, 8:4, 31-35(More)
Habitual entrepreneurs are a frequent and important phenomenon in entrepreneurship and for the economy. We lack, however, a systematic understanding of the advantages or disadvantages of multiple business ownership and specifically if portfolio and serial entrepreneurs are different in detecting and exploiting opportunities. Research on habitual(More)
Resource-based research sustains that organisations (and thus teams) create value through internally developed and complementary acquired resources, through the management of resources and the development of routines. In this study, we advance the understanding of the impact of resources and capabilities by investigating the role of moderators on the key(More)
In early stages of drug development only sparse amounts of the key substances are available, which is problematic for the determination of important process data like reaction kinetics. Therefore, it is important to perform experiments as economically as possible, especially in regards to limiting compounds. Here we demonstrate the use of a temperature step(More)