Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Thomas Lederer"'
Autor:
Thomas Lederer-Hutsteiner, Kai W. Müller, Matthias Penker, Erwin Stolz, Elfriede R. Greimel, Wolfgang Freidl
Publikováno v:
Frontiers in Public Health, Vol 12 (2024)
BackgroundThere is evidence that overexposure to digital media devices (DMD) can not only lead to addictive patterns of internet use, but also cause insomnia symptoms. The aim of this cross-sectional study among adolescents is to provide an estimate
Externí odkaz:
https://doaj.org/article/da980e17bbff4f51abd7214ed25fba86
Autor:
Robert Gutounig, Viktoria Pammer-Schindler, Andrea Mayr, Anita Lerch, Romana Rauter, Thomas Lederer-Hutsteiner, Sabine Klinger
Publikováno v:
Wirtschaftsinformatik & Management. 13:48-58
Autor:
Dieter Holzinger, Thomas Faury, Iurii Gnatiuk, Josef Innerlohinger, Thomas Obermüller, Thomas Lederer, Eva Liftinger, Julia Kastner, Michael J. Haslinger, Helene M. Außerhuber, Hans Leichtfried
Publikováno v:
Microelectronic Engineering. 176:84-88
Silver is the material of choice for printed electronics. However, dispersed silver particles can block the fine nozzles of an inkjet print head and after printing the patterns have to be sintered at elevated temperatures to provide high conductivity
Publikováno v:
Flow Measurement and Instrumentation. 52:157-162
Bi-comparison for high temperature and high Reynolds number water flows was performed between Physikalische-Technische Bundesanstalt (PTB) and National Metrology Institute of Japan (NMIJ) using differential pressure meters. The flowrate range conside
Autor:
Sonja Schmelter, Markus Bär, Thomas Lederer, André Fiebach, Paul Uwe Thamsen, Andreas Weissenbrunner
Publikováno v:
Flow Measurement and Instrumentation. 52:25-39
Computational fluid dynamics (CFD) provides well-established tools for the prediction of the velocity profiles in turbulent pipe flows. As far as industrial pipe and district heating systems are concerned, combinations of elbows are the most common p
Publikováno v:
Flow Measurement and Instrumentation. 48:51-56
Velocity–area methods are used for flow rate calculation in various industries. Applied within a fully turbulent flow regime, modest uncertainties can be expected. If the flow profile cannot be described as “log-like”, the recommended measureme
Publikováno v:
Flow Measurement and Instrumentation. 45:28-42
The quality of any laboratory intercomparison depends to a large extent on the performance of the used flow meter. To find a flow meter that is capable of reaching a reproducibility better than 0.05% requires bounding all involved influence quantitie
A practical method to assess the performance of gravimetric flow test rigs by using the timing error
Autor:
Leopoldo Cordova, Thomas Lederer
Publikováno v:
Flow Measurement and Instrumentation. 44:61-70
This paper proposes an improved method to assess the performance of a gravimetric flow test rig. It addresses the study of two of the most important measurement systems: the weighing scale and all mass-related corrections, and the time measurement sy
Autor:
Thomas Eichler, Thomas Lederer
Publikováno v:
Flow Measurement and Instrumentation. 42:89-97
The flow development behind a swirl generator according to EN 14154 of a gravimetric cold- and hot-water standard measuring facility is shown at different positions by measurements carried out using Stereoscopic Particle Image Velocimetry (SPIV). Her
Publikováno v:
tm - Technisches Messen. 81:457-463
Zusammenfassung Der Strömungszustand in einer geschlossenen Rohrleitung der Dimension DN 15 wird nach einer Änderung des Rohrdurchmessers (Sprung) anhand von Stereoscopic Particle Image Velocimetry (SPIV)-Messungen und Computational Fluid Dynamics