Pörtner Ralf
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Bioreactor design for tissue engineering
R Pörtner, S Nagel-Heyer, C Goepfert, P Adamietz, NM Meenen
Journal of bioscience and bioengineering 100 (3), 235-245, 2005
Modelling hybridoma cell growth and metabolism—a comparison of selected models and data
R Pörtner, T Schäfer
Journal of biotechnology 49 (1-3), 119-135, 1996
Cell and tissue reaction engineering
R Eibl, D Eibl, R Pörtner, G Catapano, P Czermak
Springer Science & Business Media, 2008
Future aspects of bioprocess monitoring
T Becker, B Hitzmann, K Muffler, R Pörtner, KF Reardon, F Stahl, R Ulber
White biotechnology, 249-293, 2006
Experimental and theoretical considerations on oxygen supply for animal cell growth in fixed-bed reactors
D Fassnacht, R Pörtner
Journal of biotechnology 72 (3), 169-184, 1999
Regulated overexpression of the survival factor bcl-2 in CHO cells increases viable cell density in batch culture and decreases DNA release in extended fixed-bed …
M Fussenegger, D Fassnacht, R Schwartz, JA Zanghi, M Graf, JE Bailey, ...
Cytotechnology 32 (1), 45-61, 2000
Dialysis cultures
R Pörtner, H Märkl
Applied microbiology and biotechnology 50 (4), 403-414, 1998
Improvement of a mammalian cell culture process by adaptive, model-based dialysis fed-batch cultivation and suppression of apoptosis
B Frahm, P Lane, H Märkl, R Pörtner
Bioprocess and Biosystems Engineering 26 (1), 1-10, 2003
Determination of dissolved CO2 concentration and CO2 production rate of mammalian cell suspension culture based on off-gas measurement
B Frahm, HC Blank, P Cornand, W Oelßner, U Guth, P Lane, A Munack, ...
Journal of biotechnology 99 (2), 133-148, 2002
Expansion and harvesting of hMSC-TERT
C Weber, S Pohl, R Pörtner, C Wallrapp, M Kassem, P Geigle, P Czermak
The open biomedical engineering journal 1, 38, 2007
Redifferentiation of chondrocytes and cartilage formation under intermittent hydrostatic pressure
J Heyland, K Wiegandt, C Goepfert, S Nagel-Heyer, E Ilinich, ...
Biotechnology letters 28 (20), 1641-1648, 2006
Expansion of human mesenchymal stem cells in a fixed-bed bioreactor system based on non-porous glass carrier–part A: inoculation, cultivation, and cell harvest procedures
C Weber, D Freimark, R PöRtner, P Pino-Grace, S Pohl, C Wallrapp, ...
The International journal of artificial organs 33 (8), 512-525, 2010
Long term results after implantation of tissue engineered cartilage for the treatment of osteochondral lesions in a minipig model
JP Petersen, P Ueblacker, C Goepfert, P Adamietz, K Baumbach, A Stork, ...
Journal of Materials Science: Materials in Medicine 19 (5), 2029-2038, 2008
Adaptive, model‐based control by the open‐loop‐feedback‐optimal (OLFO) controller for the effective fed‐batch cultivation of hybridoma cells
B Frahm, P Lane, H Atzert, A Munack, M Hoffmann, VC Hass, R Pörtner
Biotechnology progress 18 (5), 1095-1103, 2002
Effect of NH3 on the cell growth of a hybridoma cell line
I Lüdemann, R Pörtner, H Märkl
Cytotechnology 14 (1), 11-20, 1994
Perfusion cultures and modelling of oxygen uptake with three-dimensional chondrocyte pellets
D Nehring, P Adamietz, NM Meenen, R Pörtner
Biotechnology techniques 13 (10), 701-706, 1999
R Pörtner
Humana, 2016
Impact of collagen crosslinking on the second harmonic generation signal and the fluorescence lifetime of collagen autofluorescence
V Lutz, M Sattler, S Gallinat, H Wenck, R Poertner, F Fischer
Skin Research and Technology 18 (2), 168-179, 2012
An overview on bioreactor design, prototyping and process control for reproducible three-dimensional tissue culture
R Pörtner, C Giese
Culture of Cells For Tissue Engineering, 53-78, 2007
Influence of bcl-2 on antibody productivity in high cell density perfusion cultures of hybridoma
D Fassnacht, S Rössing, RP Singh, M Al-Rubeai, R Pörtner
Cytotechnology 30 (1-3), 95-106, 1999
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