TY  - JOUR
A1  - Funke, Harald
A1  - Rönna, Uwe
A1  - Robinson, A. E.
T1  - Development and testing of a 10 kW diffusive micromix combustor for hydrogen-fuelled μ-scale gas turbines
JF  - Proceedings of ASME Turbo Expo 2008: Power for Land, Sea and Air ; GT2008 ; June 9-13, 2008, Berlin, Germany
Y1  - 2008
N1  - GT2008-50418
SP  - 1
EP  - 8
PB  - ASME
CY  - New York, NY
ER  - 
TY  - JOUR
A1  - Tippkötter, Nils
A1  - Deterding, A.
A1  - Ulber, Roland
T1  - Determination of acetic acid in fermentation broth by gas-diffusion technique
JF  - Engineering in Life Sciences
N2  - Due to the interfering effects of acetic acid in many fermentation processes, a gas-diffusion technique was developed for the online determination of acetic acid. The measurements were accomplished with a flow diffusion analysis (FDA) unit from the TRACE Analytics GmbH, Braunschweig, Germany. The diffusion analysis is based on the UV-absorbance of acetic acid at 205 nm. The measurement was achieved by the separation of an acceptor and a carrier stream (acidified fermentation broth) using a gas permeable polytetrafluoroethylene (PTFE) membrane, whereby broth constituents that would otherwise disturb the UV-measurement of acetic acid, are held back efficiently. Merely, the fermentation by-products, e.g. formic acid, is capable of diffusing through the membrane. While formic acid can disturb the measurement, carbon dioxide does not absorb at 205 nm. The method operates with time-dependent sample enrichment. During the analysis, a small volume of the acceptor stream is stopped for a defined time interval in the acceptor chamber. During this period, the gaseous acetic acid diffuses through the membrane and is enriched in the acceptor chamber. Subsequently after the enrichment, the acceptor stream flows through a UV-detector. The intensity of the signal is proportional to the acetic acid concentration. Online measurements in bioreactors via a sterile filtration probe have been accomplished. A linear calibration in the range of 0.5–5.0 g/L acetic acid with a relative standard deviation of <5 % was obtained. A sampling rate of 8 samples per hour was possible. The system was applied for the determination of acetic acid in E. coli fermentation broth. The instrument is easy to clean, very user-friendly and does not require any toxic or expensive reagents.
Y1  - 2008
U6  - https://doi.org/10.1002/elsc.200820227
VL  - 8
IS  - 1, Special Issue: Technical Systems for the Use in Life Sciences
SP  - 62
EP  - 67
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Poghossian, Arshak
T1  - Detection of charged macromolecules by means of field-effect devices (FEDs): possibilities and limitations
JF  - Electrochemical sensors, biosensors and their biomedical applications / ed. by Xueji Zhang ...
Y1  - 2008
SN  - 978-0-12-373738-0
SP  - 187
EP  - 212
PB  - Elsevier Acad. Press
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Schwarzer, Klemens
T1  - Desalination systems with renewable energies
T2  - DME Seminar Desalination and Renewable Energies : June 19 and 20 2008, Solar Institut Jülich / Deutsche Meerwasserentsalzung e.V.
Y1  - 2008
SN  - 978-3-86861-017-8
PB  - DME
CY  - Duisburg
ER  - 
TY  - JOUR
A1  - Pietsch, Wolfram
T1  - Der IT-Produktkompass - Ein Instrument für die Analyse von Geschäftsmodellen und die strategiekonforme Positionierung von IT-Produkten
JF  - Industrialisierung des Software-Managements
Y1  - 2008
SN  - 978-3-88579-233-8
N1  - Fachtagung Software-Management <7, 2008, Stuttgart>
SP  - 73
EP  - 88
PB  - Ges. für Informatik
CY  - Bonn
ER  - 
TY  - JOUR
A1  - Kroker, J.
A1  - Faber, Christian
A1  - Trinkl, C.
A1  - Zörner, W.
T1  - Der Garten bleibt - solares Heizen mit Wärmepumpe und Latentwärmespeicher verzichtet auf großflächige Erdwärmetauscher
JF  - Erneuerbare Energien : das Magazin. 18 (2008), H. 8
Y1  - 2008
SN  - 1436-8773
SP  - 46
EP  - 49
ER  - 
TY  - JOUR
A1  - Olbertz, Klaus
A1  - Reinartz, Oliver
T1  - Der Arbeitskampf im Ungleichgewicht: Rechtmäßigkeit des Unterstützungsstreiks?
JF  - Betriebs-Berater: BB ; Recht, Wirtschaft, Steuern
Y1  - 2018
SN  - 0340-7918
N1  - gedruckt in der Bereichsbibliothek Eupener Str. unter der Signatur 42 Z 228 vorhanden
SP  - 814
ER  - 
TY  - JOUR
A1  - Hirschberg, Rainer
T1  - Decentral pumps in heating systems - a new hydraulic approac
JF  - 1st International Rotating Equipment Conference - Pumps and Compressors, 9th Pump Users International Forum, 9. Internationales Pumpenanwenderforum, Final Report, Düsseldorf, DE, 28.-29. Oct, 2008
Y1  - 2008
SP  - 1
EP  - 10
PB  - -
ER  - 
TY  - CHAP
A1  - Göttsche, Joachim
T1  - Das Gebäude-Armaturenbrett (GAB) - ein hochauflösendes Monitoring-Tool für Verbrauchsdaten in Privathaushalten
T2  - Energieeffizienz + Bestand : energetische Sanierung von Gebäuden ; internationales Anwenderforum ; 14./15. Februar 2008, Kloster Banz, Bad Staffelstein
Y1  - 2008
SN  - 978-3-934681-68-2
SP  - 216
EP  - 223
PB  - OTTI
CY  - Regensburg
ER  - 
TY  - RPRT
A1  - Wollert, Jörg
T1  - DANA - Dynamische Ad-hoc Netzwerke in der Automatisierungstechnik. Schlussbericht. Laufzeit: 01.09.2004 - 30.06.2008 (BMBF-Forschungsbericht; Förderkennzeichen 1714X04)
Y1  - 2008
PB  - BMBF
CY  - Berlin
ER  -