281 citations · 804 across the 8 of their papers we have counts for
8 papers
Modeling-based determination of physiological parameters of systemic VOCs by breath gas analysis, part 2
Clemens Ager, Karl Unterkofler, Pawel Mochalski +4
In a recent paper we presented a simple two compartment model which describes the influence of inhaled concentrations on exhaled breath concentrations for volatile organic compound…
Modeling of breath methane concentration profiles during exercise on an ergometer
Anna Szabo, Karl Unterkofler, Pawel Mochalski +7
We develop a simple three compartment model based on mass balance equations which quantitatively describes the dynamics of breath methane concentration profiles during exercise on…
Modeling-based determination of physiological parameters of systemic VOCs by breath gas analysis: a pilot study
Karl Unterkofler, Julian King, Pawel Mochalski +5
In this paper we develop a simple two compartment model which extends the Farhi equation to the case when the inhaled concentration of a volatile organic compound (VOC) is not zero…
A modeling-based evaluation of isothermal rebreathing for breath gas analyses of highly soluble volatile organic compounds
Julian King, Karl Unterkofler, Gerald Teschl +5
Isothermal rebreathing has been proposed as an experimental technique for estimating the alveolar levels of hydrophilic volatile organic compounds (VOCs) in exhaled breath. Using t…
The role of mathematical modeling in VOC analysis using isoprene as a prototypic example
Helin Koc, Julian King, Gerald Teschl +5
Isoprene is one of the most abundant endogenous volatile organic compounds (VOCs) contained in human breath and is considered to be a potentially useful biomarker for diagnostic an…
Physiological modeling of isoprene dynamics in exhaled breath
Julian King, Helin Koc, Karl Unterkofler +6
Human breath contains a myriad of endogenous volatile organic compounds (VOCs) which are reflective of ongoing metabolic or physiological processes. While research into the diagnos…
A mathematical model for breath gas analysis of volatile organic compounds with special emphasis on acetone
Julian King, Karl Unterkofler, Gerald Teschl +4
Recommended standardized procedures for determining exhaled lower respiratory nitric oxide and nasal nitric oxide have been developed by task forces of the European Respiratory Soc…
Isoprene and acetone concentration profiles during exercise on an ergometer
J. King, A. Kupferthaler, K. Unterkofler +7
A real-time recording setup combining exhaled breath VOC measurements by proton transfer reaction mass spectrometry (PTR-MS) with hemodynamic and respiratory data is presented. Con…