@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{LerchlKruegerNiehausetal.2008,
  author    = {Lerchl, Alexander and Kr{\"u}ger, Heike and Niehaus, Michael and Streckert, Joachim R. and Bitz, Andreas and Hansen, Volkert},
  title     = {Effects of mobile phone electromagnetic fields at nonthermal SAR values on melatonin and body weight of Djungarian hamsters (Phodopus sungorus)},
  series = {Journal of Pineal Research},
  volume    = {44},
  journal   = {Journal of Pineal Research},
  number    = {3},
  issn      = {1600-079X},
  doi       = {10.1111/j.1600-079X.2007.00522.x},
  pages     = {267 -- 272},
  year      = {2008},
  language  = {en}
}
@article{AlbrachtArampatzisBaltzopoulos2008,
  author    = {Albracht, Kirsten and Arampatzis, A. and Baltzopoulos, V.},
  title     = {Assessment of muscle volume and physiological cross-sectional area of the human triceps surae muscle in vivo},
  series = {Journal of Biomechanics},
  volume    = {41},
  journal   = {Journal of Biomechanics},
  issn      = {0021-9290},
  doi       = {10.1016/j.jbiomech.2008.04.020},
  pages     = {2211 -- 2218},
  year      = {2008},
  language  = {en}
}
@article{FleischhakerEvers2008,
  author    = {Fleischhaker, Robert and Evers, J{\"o}rg},
  title     = {Four-wave mixing enhanced white-light cavity},
  series = {Physical Review A - Atomic, molecular, and optical physics},
  volume    = {78},
  journal   = {Physical Review A - Atomic, molecular, and optical physics},
  number    = {5},
  issn      = {0556-2791},
  pages     = {051802(R)},
  year      = {2008},
  language  = {en}
}
@article{FleischhakerEvers2008,
  author    = {Fleischhaker, Robert and Evers, J{\"o}rg},
  title     = {Nonlinear effects in pulse propagation through Doppler-broadened closed-loop atomic media},
  series = {Physical Review A - Atomic, molecular, and optical physics},
  volume    = {77},
  journal   = {Physical Review A - Atomic, molecular, and optical physics},
  number    = {4},
  issn      = {1050-2947},
  doi       = {10.1103/PhysRevA.77.043805},
  pages     = {043805},
  year      = {2008},
  language  = {en}
}
@article{MahmoudiFleischhakerSahraietal.2008,
  author    = {Mahmoudi, Mohammad and Fleischhaker, Robert and Sahrai, Mostafa and Evers, J{\"o}rg},
  title     = {Group velocity control in the ultraviolet domain via interacting dark-state resonances},
  series = {Journal of physics B: Atomic, molecular and optical physics},
  volume    = {41},
  journal   = {Journal of physics B: Atomic, molecular and optical physics},
  number    = {2},
  issn      = {0953-4075},
  doi       = {10.1088/0953-4075/41/2/025504},
  pages     = {25504 -- 25600},
  year      = {2008},
  language  = {en}
}
@article{ButenwegGellertKranzler2008,
  author    = {Butenweg, Christoph and Gellert, Christoph and Kranzler, Thomas},
  title     = {Pseudo-dynamische Versuche an Reihenmittelh{\"a}usern - Vergleich mit aktuellen Berechnungsans{\"a}tzen},
  series = {Mauerwerk : European journal of masonry},
  volume    = {Volume 12},
  journal   = {Mauerwerk : European journal of masonry},
  number    = {Issue 6},
  issn      = {1437-1022 (E-Journal); 1432-3427 (Print)},
  doi       = {10.1002/dama.200800397},
  pages     = {315 -- 326},
  year      = {2008},
  language  = {de}
}
@article{MottaghyVosteenSchellschmidt2008,
  author    = {Mottaghy, Darius and Vosteen, Hans-Dieter and Schellschmidt, R{\"u}diger},
  title     = {Temperature dependence of the relationship of thermal diffusivity versus thermal conductivity for crystalline rocks},
  series = {International Journal of Earth Sciences},
  volume    = {97},
  journal   = {International Journal of Earth Sciences},
  number    = {2},
  issn      = {1437-3262},
  doi       = {10.1007/s00531-007-0238-3},
  pages     = {435 -- 442},
  year      = {2008},
  language  = {en}
}
@article{BaierMottaghyZiegleretal.2008,
  author    = {Baier, C. and Mottaghy, Darius and Ziegler, M. and Rath, V.},
  title     = {Numerische Simulation des Gefrierprozesses bei der Baugrundvereisung im durchstr{\"o}mten Untergrund},
  series = {Bauingenieur},
  volume    = {83},
  journal   = {Bauingenieur},
  number    = {2},
  issn      = {0005-6650},
  pages     = {49 -- 60},
  year      = {2008},
  language  = {de}
}
@article{Kirsch2008,
  author    = {Kirsch, Ansgar},
  title     = {Experimentelle Untersuchung des Ortsbrustversagens seichter Tunnel},
  series = {{\"O}sterreichische Bauwirtschaft},
  journal   = {{\"O}sterreichische Bauwirtschaft},
  number    = {Sondernr.},
  pages     = {6 -- 9},
  year      = {2008},
  language  = {de}
}