@article{TippkoetterDeterdingUlber2008,
  author    = {Tippk{\"o}tter, Nils and Deterding, A. and Ulber, Roland},
  title     = {Determination of acetic acid in fermentation broth by gas-diffusion technique},
  series = {Engineering in Life Sciences},
  volume    = {8},
  journal   = {Engineering in Life Sciences},
  number    = {1, Special Issue: Technical Systems for the Use in Life Sciences},
  doi       = {10.1002/elsc.200820227},
  pages     = {62 -- 67},
  year      = {2008},
  abstract  = {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.},
  language  = {en}
}
@article{TippkoetterRoikaewUlber2008,
  author    = {Tippk{\"o}tter, Nils and Roikaew, W. and Ulber, R.},
  title     = {Nitrate removal from whey concentrate with biotechnological regeneration of the waste water},
  series = {European dairy magazine : EDM},
  journal   = {European dairy magazine : EDM},
  number    = {1},
  isbn      = {0936-6318},
  pages     = {30 -- 32},
  year      = {2008},
  language  = {en}
}
@inproceedings{TippkoetterRoikaewUlber2008,
  author    = {Tippk{\"o}tter, Nils and Roikaew, W. and Ulber, R.},
  title     = {An automated pilot plant for the bioengineering processing of concentrated whey},
  series = {European BioPerspectives : in cooperation with BIOTECHNICA 2008 : 7 - 9 October 2008 Hannover, Germany ; book of abstracts ; abstracts, poster programme},
  booktitle = {European BioPerspectives : in cooperation with BIOTECHNICA 2008 : 7 - 9 October 2008 Hannover, Germany ; book of abstracts ; abstracts, poster programme},
  publisher = {Dechema},
  address   = {Frankfurt am Main},
  pages     = {98},
  year      = {2008},
  language  = {en}
}
@inproceedings{TippkoetterSchuenemannChristmannetal.2008,
  author    = {Tippk{\"o}tter, Nils and Sch{\"u}nemann, V. and Christmann, R. and Pasteur, A. and Schweizer, J. and Ulber, R.},
  title     = {Bioaffinity Layering magnetisierbarer Mikro- und Nanopartikel},
  series = {Technische Systeme f{\"u}r die Lebenswissenschaften : 14. Heiligenst{\"a}dter Kolloquium, Heilbad Heiligenstadt, 22.09. - 24.09.2008},
  booktitle = {Technische Systeme f{\"u}r die Lebenswissenschaften : 14. Heiligenst{\"a}dter Kolloquium, Heilbad Heiligenstadt, 22.09. - 24.09.2008},
  editor    = {Beckmann, Dieter},
  address   = {Heiligenstadt},
  isbn      = {978-3-00-025695-0},
  pages     = {97 -- 98},
  year      = {2008},
  language  = {de}
}
@phdthesis{Tran2008,
  author    = {Tran, Thanh Ngoc},
  title     = {Limit and shakedown analysis of plates and shells including uncertainties},
  year      = {2008},
  language  = {en}
}
@article{TranKreissigVuetal.2008,
  author    = {Tran, Thanh Ngoc and Kreißig, R. and Vu, Duc Khoi and Staat, Manfred},
  title     = {Upper bound limit and shakedown analysis of shells using the exact Ilyushin yield surface},
  series = {Computer \& Structures. 86 (2008)},
  journal   = {Computer \& Structures. 86 (2008)},
  isbn      = {0045-7949},
  pages     = {1683 -- 1695},
  year      = {2008},
  language  = {en}
}
@article{TrillaGrossenRobinsonetal.2008,
  author    = {Trilla, Joan and Grossen, J{\"u}rgen and Robinson, Alexander and Funke, Harald and Bosschaerts, Walter and Hendrick, Patrick},
  title     = {Development of a hydrogen combustion chamber for an ultra micro gas turbine},
  series = {PowerMEMS 2008, 8th International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications, microEMS 2008, 2nd Symposium on Micro Environmental Machine Systems, Sendai, JP, Nov 9-12, 2008},
  journal   = {PowerMEMS 2008, 8th International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications, microEMS 2008, 2nd Symposium on Micro Environmental Machine Systems, Sendai, JP, Nov 9-12, 2008},
  pages     = {101 -- 104},
  year      = {2008},
  language  = {en}
}
@article{TurekKeusgenPoghossianetal.2008,
  author    = {Turek, M. and Keusgen, M. and Poghossian, Arshak and Mulchandani, A. and Wang, J. and Sch{\"o}ning, Michael Josef},
  title     = {Enzyme-modified electrolyte-insulator-semiconductor sensors},
  series = {Journal of Contemporary Physics. 43 (2008), H. 2},
  journal   = {Journal of Contemporary Physics. 43 (2008), H. 2},
  isbn      = {1934-9378},
  pages     = {82 -- 85},
  year      = {2008},
  language  = {en}
}
@article{TurekSchoeningKloocketal.2008,
  author    = {Turek, Monika and Sch{\"o}ning, Michael Josef and Kloock, Joachim P. and Schubert, J{\"u}rgen and Zander, Willi and Kr{\"u}ger, Peter and Keusgen, Michael},
  title     = {Herstellung und Charakterisierung eines hybriden Sensorarrays auf Halbleiterbasis f{\"u}r die Umweltanalytik},
  series = {Sensoren und Messsysteme 2008 : 14. Fachtagung Ludwigsburg, 11. und 12. M{\"a}rz 2008 / VDI/VDE-Gesellschaft Mess- und Automatisierungstechnik},
  journal   = {Sensoren und Messsysteme 2008 : 14. Fachtagung Ludwigsburg, 11. und 12. M{\"a}rz 2008 / VDI/VDE-Gesellschaft Mess- und Automatisierungstechnik},
  publisher = {VDI-Verl.},
  address   = {D{\"u}sseldorf},
  isbn      = {978-3-18-092011-5},
  pages     = {803 -- 810},
  year      = {2008},
  language  = {de}
}
@book{Tuennemann2008,
  author    = {T{\"u}nnemann, Thomas},
  title     = {Oder anders ... formine 2008 : Workshop ; Studieng{\"a}nge Architektur der Fachhochschule Aachen \& Hochschule Biberach / Frielingsdorf, Holger ; T{\"u}nnemann, Thomas ... (Hrsg.)},
  publisher = {Fachhochschule Aachen, Fachbereich Architektur},
  address   = {Aachen},
  isbn      = {978-3-9811003-2-7},
  pages     = {64 S. : zahlr. Ill.},
  year      = {2008},
  language  = {de}
}
@article{UlberTippkoetterBuchholzetal.2008,
  author    = {Ulber, R. and Tippk{\"o}tter, Nils and Buchholz, H. and Demmer, W. and Scheper, T.},
  title     = {Innovative Verfahren in der Molkeaufarbeitung zur Gewinnung neuer Produkte},
  series = {Deutsche Milchwirtschaft},
  volume    = {59},
  journal   = {Deutsche Milchwirtschaft},
  number    = {19},
  issn      = {0012-0480},
  pages     = {704 -- 706},
  year      = {2008},
  language  = {de}
}
@article{VantStaatBaroud2008,
  author    = {Vant, Christianne and Staat, Manfred and Baroud, Gamal},
  title     = {Percutaneous Vertebroplasty: A Review of Two Intraoperative Complications},
  series = {Bioengineering in Cell and Tissue Research / Artmann, Gerhard M. ; Chien, Shu (Eds.)},
  journal   = {Bioengineering in Cell and Tissue Research / Artmann, Gerhard M. ; Chien, Shu (Eds.)},
  publisher = {Springer},
  address   = {Berlin},
  isbn      = {978-3-540-75408-4},
  pages     = {527 -- 539},
  year      = {2008},
  language  = {en}
}
@book{Vieth2008,
  author    = {Vieth, Matthias},
  title     = {Geld-zur{\"u}ck-Garantien: Eine empirische Wirkungsanalyse aus Konsumentensicht.},
  publisher = {Springer Gabler},
  address   = {Wiesbaden},
  isbn      = {978-3-8349-1408-8},
  pages     = {217 Seiten},
  year      = {2008},
  language  = {de}
}
@inproceedings{WagnerYoshinobuSchoening2008,
  author    = {Wagner, Torsten and Yoshinobu, T. and Sch{\"o}ning, Michael Josef},
  title     = {Light-addressable potentiometric sensor as semiconductor-based sensor platform for (bio-) chemical sensing},
  series = {Armenian Journal of Physics},
  booktitle = {Armenian Journal of Physics},
  issn      = {1829-1171},
  pages     = {99 -- 103},
  year      = {2008},
  language  = {en}
}
@inproceedings{WangMensingGligorevicetal.2008,
  author    = {Wang, W. and Mensing, C. and Gligorevic, Snjezana and Jost, T. and Dammann, A.},
  title     = {Short term statistical analysis of outdoor to indoor propagation channel for geolocations},
  series = {Proceedings of the 13th International OFDM Workshop : (InOWo '08), Aug. 27./28. 2008, Hamburg : Session 3A: Systems concepts},
  booktitle = {Proceedings of the 13th International OFDM Workshop : (InOWo '08), Aug. 27./28. 2008, Hamburg : Session 3A: Systems concepts},
  organization    = {International OFDM Workshop <13, 2008, Hamburg>},
  pages     = {85 -- 89},
  year      = {2008},
  language  = {en}
}
@inproceedings{WarerkarSchmitzGoettscheetal.2008,
  author    = {Warerkar, S. and Schmitz, S. and G{\"o}ttsche, Joachim and Hoffschmidt, Bernhard and Tamme, R.},
  title     = {Performance analysis of an air-sand heat exchanger prototype for high-temperature storage},
  series = {EuroSun 2008 : 1st International Conference on Solar Heating, Cooling and Buildings ; 7th - 10th October 2008, Lisbon, Portugal : key lectures / ISES, International Solar Energy Society. Vol. 1},
  booktitle = {EuroSun 2008 : 1st International Conference on Solar Heating, Cooling and Buildings ; 7th - 10th October 2008, Lisbon, Portugal : key lectures / ISES, International Solar Energy Society. Vol. 1},
  publisher = {Sociedade Portuguesa De Energia Solar (SPES)},
  address   = {Lissabon},
  isbn      = {978-1-61782-228-5},
  pages     = {2215 -- 2222},
  year      = {2008},
  language  = {en}
}
@article{WeberRiglingEilmannetal.2008,
  author    = {Weber, Pascale and Rigling, Andreas and Eilmann, Britta and Mayer, Phillip and Wohlgemuth, Thomas and Dobbertin, Matthias},
  title     = {Verj{\"u}ngung und Konkurrenz der Flaumeiche im Wallis},
  series = {Informationsblatt Wald},
  journal   = {Informationsblatt Wald},
  number    = {22},
  issn      = {1661-5859 (Online)},
  pages     = {1 -- 3},
  year      = {2008},
  language  = {de}
}
@article{Wessling2008,
  author    = {Weßling, Matthias},
  title     = {Aktives Nachfolger-Coaching f{\"u}r den Mittelstand setzt fr{\"u}h an. Innovative Idee f{\"u}r Studierende der FH Aachen},
  series = {Wirtschaftliche Nachrichten der Industrie- und Handelskammer Aachen / IHK (2008)},
  journal   = {Wirtschaftliche Nachrichten der Industrie- und Handelskammer Aachen / IHK (2008)},
  pages     = {12 -- 13},
  year      = {2008},
  language  = {de}
}
@article{Wessling2008,
  author    = {Weßling, Matthias},
  title     = {Innovative Didaktik auf internationalem Niveau},
  series = {Dimensionen : Magazin der Fachhochschule Aachen (2008)},
  journal   = {Dimensionen : Magazin der Fachhochschule Aachen (2008)},
  pages     = {36 -- 37},
  year      = {2008},
  language  = {de}
}
@article{Wilke2008,
  author    = {Wilke, Thomas},
  title     = {[Rezension zu: ] Gundula Lang: B{\"u}rgerliche Privatg{\"a}rten in deutschen Landen um 1800. Fallstudien zu Gestalt, Nutzung und Bedeutung im Kontext des gesellschaftlichen Umbruchs, Worms: Wernersche Verlagsgesellschaft 2007},
  series = {Sehepunkte},
  volume    = {8},
  journal   = {Sehepunkte},
  number    = {9},
  issn      = {1618-6168},
  year      = {2008},
  language  = {de}
}