@article{SchwabHojdisLacayoetal.2016, author = {Schwab, Lukas and Hojdis, Nils and Lacayo, Jorge and Wilhelm, Manfred}, title = {Fourier-Transform Rheology of Unvulcanized, Carbon Black Filled Styrene Butadiene Rubber}, series = {Macromolecular Materials and Engineering}, volume = {301}, journal = {Macromolecular Materials and Engineering}, number = {4}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1439-2054}, doi = {10.1002/mame.201500356}, pages = {457 -- 468}, year = {2016}, abstract = {Rubber materials filled with reinforcing fillers display nonlinear rheological behavior at small strain amplitudes below γ0 < 0.1. Nevertheless, rheological data are analyzed mostly in terms of linear parameters, such as shear moduli (G′, G″), which loose their physical meaning in the nonlinear regime. In this work styrene butadiene rubber filled with carbon black (CB) under large amplitude oscillatory shear (LAOS) is analyzed in terms of the nonlinear parameter I3/1. Three different CB grades are used and the filler load is varied between 0 and 70 phr. It is found that I3/1(φ) is most sensitive to changes of the total accessible filler surface area at low strain amplitudes (γ0 = 0.32). The addition of up to 70 phr CB leads to an increase of I3/1(φ) by a factor of more than ten. The influence of the measurement temperature on I3/1 is pronounced for CB levels above the percolation threshold.}, language = {en} } @article{ZientzBongaertsUnden1998, author = {Zientz, Evelyn and Bongaerts, Johannes and Unden, Gottfried}, title = {Fumarate regulation of gene expression in Escherichia coli by the DcuSR (dcuSR genes) two-component regulatory system}, series = {Journal of bacteriology}, volume = {Vol. 180}, journal = {Journal of bacteriology}, number = {No. 20}, issn = {1098-5530 (E-Journal); 0021-9193 (Print)}, pages = {5421 -- 5425}, year = {1998}, language = {en} } @article{TippkoetterAlKaidyWollnyetal.2013, author = {Tippk{\"o}tter, Nils and Al-Kaidy, Huschyar and Wollny, Steffen and Ulber, Roland}, title = {Functionalized magnetizable particles for downstream processing in single-use systems}, series = {Chemie Ingenieur Technik}, volume = {85}, journal = {Chemie Ingenieur Technik}, number = {1-2: Special Issue: Single-Use Technology}, publisher = {Wiley}, address = {Weinheim}, doi = {10.1002/cite.201200130}, pages = {76 -- 86}, year = {2013}, abstract = {Biotechnological downstream processing is usually an elaborate procedure, requiring a multitude of unit operations to isolate the target component. Besides the disadvantageous space-time yield, the risks of cross-contaminations and product loss grow fast with the complexity of the isolation procedure. A significant reduction of unit operations can be achieved by application of magnetic particles, especially if these are functionalized with affinity ligands. As magnetic susceptible materials are highly uncommon in biotechnological processes, target binding and selective separation of such particles from fermentation or reactions broths can be done in a single step. Since the magnetizable particles can be produced from iron salts and low priced polymers, a single-use implementation of these systems is highly conceivable. In this article, the principles of magnetizable particles, their synthesis and functionalization are explained. Furthermore, applications in the area of reaction engineering, microfluidics and downstream processing are discussed focusing on established single-use technologies and development potential.}, language = {en} } @article{FeuerriegelHoffmannWalenziketal.2001, author = {Feuerriegel, Uwe and Hoffmann, Ulrich and Walenzik, C. and K{\"o}gel, J.}, title = {F{\"u}r Scale-up´s und Betriebsmuster, Projekt Trocknungstechnik an der FH Aachen}, series = {CITplus : das Praxismagazin f{\"u}r Verfahrenstechnik und Apparatebau. 4 (2001)}, journal = {CITplus : das Praxismagazin f{\"u}r Verfahrenstechnik und Apparatebau. 4 (2001)}, isbn = {1436-2597}, pages = {24 -- 25}, year = {2001}, language = {de} } @article{MangRoosenAnsorgeetal.2006, author = {Mang, Thomas and Roosen, C. and Ansorge, M. and Leitner, W.}, title = {Gaining pH-control in water/carbon dioxide biphasic systems / Abstract No. 1038 / Roosen, Ch. ; Ansorge, M. ; Mang, Thomas ; Leitner, W. ; Greiner, L.}, series = {Green solvents for processes : Lake Constance, Friedrichshafen, Germany, 8 - 11 October 2006 ; book of abstracts / DECHEMA e.V.}, journal = {Green solvents for processes : Lake Constance, Friedrichshafen, Germany, 8 - 11 October 2006 ; book of abstracts / DECHEMA e.V.}, publisher = {DECHEMA}, address = {Frankfurt am Main}, pages = {145 S.}, year = {2006}, language = {en} } @article{MangRoosenAnsorgeSchumacheretal.2007, author = {Mang, Thomas and Roosen, Christoph and Ansorge-Schumacher, Marion and Leitner, Walter}, title = {Gaining pH-control in water/carbon dioxide biphasic systems / Roosen, Christoph ; Ansorge-Schumacher, Marion ; Mang, Thomas ; Leitner, Walter ; Greiner, Lasse}, series = {Green Chemistry. 9 (2007)}, journal = {Green Chemistry. 9 (2007)}, isbn = {1463-9262}, pages = {455 -- 458}, year = {2007}, language = {en} } @article{SchererGaeggelerJostetal.1992, author = {Scherer, Ulrich W. and G{\"a}ggeler, H. W. and Jost, D. T. and Kovacs, J.}, title = {Gas Phase Chromatography Experiments with Bromides of Tantalum and Element 105 / H.W. G{\"a}ggeler, D.T. Jost, J. Kovacs, U.W. Scherer, A. Weber, D. Vermeulen, A. T{\"u}rler, K.E. Gregorich, R.A. Henderson, K.R. Czerwinski, B. Kadkhodayan, D.M. Lee, M. Nurmia, D.}, series = {Radiochimica Acta. 57 (1992)}, journal = {Radiochimica Acta. 57 (1992)}, isbn = {0033-8230}, pages = {93 -- 100}, year = {1992}, language = {en} } @article{SchererTuerlerGaeggeleretal.1992, author = {Scherer, Ulrich W. and T{\"u}rler, A. and G{\"a}ggeler, H. W. and Gregorich, K. E.}, title = {Gas phase chromatography of halides of elements 104 and 105 / A. T{\"u}rler, H. W. G{\"a}ggeler, K. E. Gregorich, H. Barth, W. Br{\"u}chle, K. R. Czerwinski, M. K. Gober, N. J. Hannink, R. A. Henderson, D. C. Hoffman, D. T. Jost, C. D. Kacher, B. Kadkhodayan, J. Kova}, series = {Journal of Radioanalytical and Nuclear Chemistry. 160 (1992), H. 2}, journal = {Journal of Radioanalytical and Nuclear Chemistry. 160 (1992), H. 2}, isbn = {0236-5731}, pages = {327 -- 339}, year = {1992}, language = {en} } @article{SchererHoerKranertetal.1998, author = {Scherer, Ulrich W. and H{\"o}r, G. and Kranert, W. T. and Maul, F. D.}, title = {Gated Metabolic Positron Emission Tomography (GAPET) of Myocardium: 18F-FDG/PET to optimize Recognition of Myocardial Hibernation / G. H{\"o}r, W.T. Kranert, F.D. Maul, O. Schr{\"o}der, A. Karimian-Tatriz, O. Geb, R.P. Baum, U.W. Scherer}, series = {Nuclear Medicine Communications. 19 (1998)}, journal = {Nuclear Medicine Communications. 19 (1998)}, isbn = {0143-3636}, pages = {535 -- 545}, year = {1998}, language = {en} } @article{DallasSalphatiGomezZepedaetal.2016, author = {Dallas, Shannon and Salphati, Laurent and Gomez-Zepeda, David and Wanek, Thomas and Chen, Liangfu and Chu, Xiaoyan and Kunta, Jeevan and Mezler, Mario and Menet, Marie-Claude and Chasseigneaux, Stephanie and Decl{\`e}ves, Xavier and Langer, Oliver and Pierre, Esaie and DiLoreto, Karen and Hoft, Carolin and Laplanche, Loic and Pang, Jodie and Pereira, Tony and Andonian, Clara and Simic, Damir and Rode, Anja and Yabut, Jocelyn and Zhang, Xiaolin and Scheer, Nico}, title = {Generation and Characterization of a Breast Cancer Resistance Protein Humanized Mouse Model}, series = {Molecular Pharmacology}, volume = {89}, journal = {Molecular Pharmacology}, number = {5}, publisher = {ASPET}, address = {Bethesda, Md.}, issn = {1521-0111}, doi = {10.1124/mol.115.102079}, pages = {492 -- 504}, year = {2016}, abstract = {Breast cancer resistance protein (BCRP) is expressed in various tissues, such as the gut, liver, kidney and blood brain barrier (BBB), where it mediates the unidirectional transport of substrates to the apical/luminal side of polarized cells. Thereby BCRP acts as an efflux pump, mediating the elimination or restricting the entry of endogenous compounds or xenobiotics into tissues and it plays important roles in drug disposition, efficacy and safety. Bcrp knockout mice (Bcrp-/-) have been used widely to study the role of this transporter in limiting intestinal absorption and brain penetration of substrate compounds. Here we describe the first generation and characterization of a mouse line humanized for BCRP (hBCRP), in which the mouse coding sequence from the start to stop codon was replaced with the corresponding human genomic region, such that the human transporter is expressed under control of the murine Bcrp promoter. We demonstrate robust human and loss of mouse BCRP/Bcrp mRNA and protein expression in the hBCRP mice and the absence of major compensatory changes in the expression of other genes involved in drug metabolism and disposition. Pharmacokinetic and brain distribution studies with several BCRP probe substrates confirmed the functional activity of the human transporter in these mice. Furthermore, we provide practical examples for the use of hBCRP mice to study drug-drug interactions (DDIs). The hBCRP mouse is a promising model to study the in vivo role of human BCRP in limiting absorption and BBB penetration of substrate compounds and to investigate clinically relevant DDIs involving BCRP.}, language = {en} }