TY  - JOUR
A1  - Baumann, Marcus
A1  - Brandini, Frederico
A1  - Staubes, Regina
T1  - The influence of light and temperature on carbonspecific DMS release by cultures of Phaeocystis antarctica and three antarctic diatoms / Baumann, Marcus E.M. ; Brandini, Frederico ; Staubes, Regina
JF  - Marine Chemistry. 45 (1994), H. 1-2
Y1  - 1994
SN  - 0304-4203
SP  - 129
EP  - 136
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Goeyens, L.
A1  - Semeneh, M.
A1  - Elskens, M.
T1  - Phytoplankton nutrient utilisation and nutrient signature in the Southern Ocean / Goeyens, L. ; Semeneh, M. ; Baumann, M.E.M. ; Elskens, M. ; Shopova, D. ; Dehairs, F.
JF  - Journal of Marine Systems. 17 (1998), H. 1-4
Y1  - 1998
SN  - 0924-7963
SP  - 143
EP  - 157
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Goeyens, L.
A1  - Tréguer, P.
A1  - Baeyens, W.
T1  - The leading role of ammonium in the nitrogen uptake regime of Southern Ocean marginal ice zones / Goeyens, L. ; Tréguer, P. ; Baumann, M.E.M. ; Baeyens, W. ; Dehairs, F.
JF  - Journal of Marine Systems. 6 (1995), H. 4
Y1  - 1995
SN  - 0924-7963
SP  - 345
EP  - 361
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Gradinger, R.
T1  - Distribution of Phytoplankton Communities in Relation to the Large Scale Hydrographical Regime in the Fram Strait 1984 / Gradinger, R. ; Baumann, M.E.M.
JF  - Marine Biology. 111 (1991), H. 2
Y1  - 1991
SN  - 0025-3162
SP  - 311
EP  - 321
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Gronsfeld, A.
A1  - Schütz-Lembach, G.
T1  - Nachdenklichkeit über Nachhaltigkeit : wie uns ein neues Wort alte Probleme neu entdecken läßt
JF  - Wechselwirkung : Wissenschaft & vernetztes Denken
Y1  - 1997
SN  - 0172-1623
VL  - 19
IS  - 87
SP  - 6
EP  - 11
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Hirche, H.-J.
A1  - Kattner, G.
A1  - Gradinger, R.
T1  - Plankton distribution and the impact of copepod grazing on primary production in Fram Strait, Greenland Sea / Hirche, H.-J. ; Baumann, M.E.M. ; Kattner, G.; Gradinger, R.
JF  - Journal of Marine Systems. 2 (1991), H. 3-4
Y1  - 1991
SN  - 0924-7963
SP  - 477
EP  - 494
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Jahnke, J.
T1  - Chemical and Physical Effects on the Shape and Growth of the Diatom Biddulphia sinensis GREVILLE in Batch Cultures: A Contribution to Bioindication in Plankton Ecology / Jahnke, J. ; Baumann, M.
JF  - Hydrobiological Bulletin . 17 (1983), H. 1
Y1  - 1983
SN  - 0165-1404
SP  - 5
EP  - 20
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Jahnke, J.
T1  - Marine Planktonalgen der Arktis I. Die Haptophycee Phaeocystis pouchetii / Baumann, M. ; Jahnke, J.
JF  - Mikrokosmos. 75 (1986), H. 9
Y1  - 1986
SN  - 0026-3680
SP  - 262
EP  - 265
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Jahnke, J.
T1  - Die marine Planktonalge Phaeocystis globosa / Jahnke, J. ; Baumann, M.
JF  - Mikrokosmos. 75 (1986), H. 12
Y1  - 1986
SN  - 0026-3680
SP  - 357
EP  - 359
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Krämer, M.
T1  - Marine Planktonalgen der Arktis II. Diatomeen / Baumann, M. ; Krämer, M.
JF  - Mikrokosmos. 75 (1986), H. 10
Y1  - 1986
SN  - 0026-3680
SP  - 306
EP  - 310
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Lancelot, C.
A1  - Brandini, F.
A1  - Sakshaug, E.
T1  - The taxonomic identity of the cosmopolitan prymnesiophyte Phaeocystis, a morphological and ecophysiological approach / Baumann, M.E.M. ; Lancelot, C. ; Brandini, F. ; Sakshaug, E. ; John M.
JF  - Journal of Marine Systems. 5 (1994), H. 1
Y1  - 1994
SN  - 0924-7963
SP  - 5
EP  - 22
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Lara, R.J.
A1  - Hubberten, D.N.
A1  - Thomas, D.N.
T1  - Dissolved organic matter studies in enclosed systems: Application of hydophobic fractionation for the assessment of organic nitrogen dynamics / Lara, R.J. ; Hubberten, U. ; Thomas, D.N. ; Baumann, M.E.M. ; Kattner, G.
JF  - Journal of Marine Systems. 13 (1997), H. 1-4
Y1  - 1997
SN  - 0924-7963
SP  - 155
EP  - 161
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Peschel, G.
T1  - Aktuelle Entwicklungen zur Luftreinhaltung in der Stadt Aachen
JF  - Wechselwirkung : Wissenschaft & vernetztes Denken
Y1  - 1998
SN  - 0172-1623
VL  - 20
IS  - 91
SP  - 22
EP  - 29
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Peschel, G.
T1  - Das Klima Aachens, lokale Ansprüche und globale Auswirkungen
JF  - Wechselwirkung : Wissenschaft & vernetztes Denken
Y1  - 1998
SN  - 0172-1623
VL  - 20
IS  - 93
SP  - 26
EP  - 33
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Rousseau, V.
A1  - Vaulot, D.
A1  - Casotti, R.
T1  - The life cycle of Phaeocystis (Prymnesiophycae): evidence and hypotheses / Rousseau, V. ; Vaulot, D. ; Casotti, R. ; Cariou, V. ; Lenz, J. ; Gunkel, J. ; Baumann, M.
JF  - Journal of Marine Systems. 5 (1994), H. 1
Y1  - 1994
SN  - 0924-7963
SP  - 23
EP  - 39
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Schwarz, Sonja
A1  - Kotliar, Konstantin
A1  - Eynatten, Maximilian von
A1  - Trucksaess, Arno
A1  - Burckhardt, Klaus
A1  - Lutz, Jens
A1  - Heemann, Uwe
A1  - Lanzl, Ines
T1  - Non-diabetic chronic kidney disease influences retinal microvasculature
JF  - Kidney and Blood Pressure Research
Y1  - 2009
SN  - 1423-0143
VL  - 32
IS  - 6
SP  - 428
EP  - 433
PB  - -
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Semeneh, M.
A1  - Dehairs, F.
A1  - Elskens, M.
T1  - Nitrogen uptake regime and phytoplankton community structure in the Southern Ocean / Semeneh, M. ; Dehairs, F. ; Elskens, M. ; Baumann, M.E.M. ; Kopczynska, E.E. ; Lancelot, C. ; Goeyens, L.
JF  - Journal of Marine Systems. 17 (1998), H. 1-4
Y1  - 1998
SN  - 0924-7963
SP  - 159
EP  - 177
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Thomas, D.
A1  - Gleitz, M.
T1  - Efficiency of carbon assimilation and photoacclimation in a small unicellular Chaetoceros species from the Weddel Sea (Antarctica): Influence of temperature and irridiance / Thomas, D. ; Baumann, M.E.M. ; Gleitz, M.
JF  - Journal of Experimental Marine Biology and Ecology. 157 (1992), H. 2
Y1  - 1992
SN  - 0022-0981
SP  - 195
EP  - 209
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Tillmann, U.
A1  - Aletsee, L.
T1  - Distribution of Carbon Among Photosynthetic End Products in the Bloom-Forming Arctic Diatom Thalassiosira antarctica COMBER / Tillmann, U. ; Baumann, M.E.M. ; Aletsee, L.
JF  - Polar Biology. 10 (1989), H. 3
Y1  - 1989
SN  - 0722-4060
SP  - 231
EP  - 238
ER  - 
TY  - CHAP
A1  - Baumann, T.
A1  - Teixeira Boura, Cristiano José
A1  - Göttsche, Joachim
A1  - Hoffschmidt, Bernhard
A1  - O'Connell, B.
A1  - Schmitz, S.
A1  - Zunft, S.
T1  - Air/Sand heat exchanger design and materials for solar thermal power plant applications
T2  - SolarPACES 2010 : the CSP Conference: electricity, fuels and clean water from concentrated solar energy ; 21 to 24 September 2010, Perpignan, France
Y1  - 2010
SP  - 146
EP  - 147
PB  - Soc. OSC
CY  - Saint Maur
ER  - 
TY  - CHAP
A1  - Baumann, Torsten
A1  - Teixeira Boura, Cristiano José
A1  - Eckstein, Julian
A1  - Dabrowski, Jan
A1  - Göttsche, Joachim
A1  - Hoffschmidt, Bernhard
A1  - Schmitz, Stefan
A1  - Zunft, Stefan
T1  - Properties of bulk materials for high-temperature air-sand heat exchangers
T2  - 30th ISES Biennial Solar World Congress 2011 : Kassel, Germany, 28 August - 2 September 2011. Vol. 2
Y1  - 2012
SN  - 978-1-61839-364-7
SP  - 1270
EP  - 1278
PB  - Curran
CY  - Red Hook, NY
ER  - 
TY  - CHAP
A1  - Baumann, Torsten
A1  - Teixeira Boura, Cristiano José
A1  - Eckstein, Julian
A1  - Felinks, Jan
A1  - Göttsche, Joachim
A1  - Hoffschmidt, Bernhard
A1  - Schmitz, Stefan
A1  - Zunft, Stefan
T1  - Air-sand heat exchanger
T2  - 6th International Renewable Energy Storage Conference (IRES 2011) :  November 28 - 30, 2011, bcc Berlin Congress Center, Berlin, Germany / EUROSOLAR ...
Y1  - 2011
PB  - Eurosolar
CY  - Bonn
ER  - 
TY  - CHAP
A1  - Baumann, Torsten
A1  - Teixeira Boura, Cristiano José
A1  - Göttsche, Joachim
A1  - Hoffschmidt, Bernhard
A1  - Schmitz, Stefan
A1  - Zunft, Stefan
T1  - Air-sand heat exchanger: materials and flow properties
T2  - SolarPACES 2011 : concentrating solar power and chemical energy systems : 20 - 23 September, 2011, Granada, Spain
Y1  - 2011
CY  - Granada
ER  - 
TY  - GEN
A1  - Baumgartner, Thomas
A1  - Wunderlich, Florian
A1  - Jaunich, Arthur
A1  - Sato, Tomoo
A1  - Bundy, Georg
A1  - Grießmann, Nadine
A1  - Kowalski, Julia
A1  - Burghardt, Stefan
A1  - Hanebrink, Jörg
T1  - Lighting the way: Perspectives on the global lighting market
Y1  - 2012
CY  - McKinsey
ET  - 2nd ed.
ER  - 
TY  - JOUR
A1  - Baumgartner, Werner
A1  - Fidler, Florian
A1  - Weth, Agnes
A1  - Habbecke, Martin
A1  - Jakob, Peter
A1  - Butenweg, Christoph
A1  - Böhme, Wolfgang
T1  - Investigating the locomotion of the sandfish in desert sand using NMR-Imaging
JF  - PLOS ONE
N2  - The sandfish (Scincus scincus) is a lizard having the remarkable ability to move through desert sand for significant distances. It is well adapted to living in loose sand by virtue of a combination of morphological and behavioural specializations. We investigated the bodyform of the sandfish using 3D-laserscanning and explored its locomotion in loose desert sand using fast nuclear magnetic resonance (NMR) imaging. The sandfish exhibits an in-plane meandering motion with a frequency of about 3 Hz and an amplitude of about half its body length accompanied by swimming-like (or trotting) movements of its limbs. No torsion of the body was observed, a movement required for a digging-behaviour. Simple calculations based on the Janssen model for granular material related to our findings on bodyform and locomotor behaviour render a local decompaction of the sand surrounding the moving sandfish very likely. Thus the sand locally behaves as a viscous fluid and not as a solid material. In this fluidised sand the sandfish is able to “swim” using its limbs.
KW  - magnetic resonance imaging
KW  - body limbs
KW  - swimming
KW  - lizards
KW  - deserts
Y1  - 2008
U6  - https://doi.org/10.1371/journal.pone.0003309
SN  - 1932-6203
VL  - 3
IS  - 10
PB  - Plos
CY  - San Francisco, California, US
ER  - 
TY  - JOUR
A1  - Baums, Bodo
T1  - Hubschrauberzellen aus Faserverbund-Werkstoffen
JF  - Kunststoffe. 82 (1992), H. 11
Y1  - 1992
SN  - 0023-5563
SP  - 1114
EP  - 1118
ER  - 
TY  - CHAP
A1  - Bauschat, J.-Michael
A1  - Benner, Miriam
A1  - Klinge, Henner
A1  - Ziegler, Simon
T1  - Urbane Mobilität entdeckt die 3. Dimension
T2  - Transforming Mobility – What Next?
N2  - Der Themenkomplex urbane Mobilität ist getrieben durch den Verkehrsinfarkt in Ballungszentren, durch Luftverschmutzung und Lärm, sowie den Trend zum Leben in der Stadt in den städteplanerischen Fokus gerückt. Emissionsneutrale Antriebskonzepte in der Luftfahrt führen zu Ansätzen Fluggeräte einzusetzen, die batteriegetrieben vertikal aufsteigen und landen können. Flugphysikalisch und energetisch ist diese Technik nur dann sinnvoll, wenn es zwingende Gründe gibt (z.B. Rettungseinsätze), daher wird der flugphysikalische Hintergrund prinzipiell erläutert. Es werden einige aktuelle Lufttransportkonzepte für eine urbane Personenbeförderung vorgestellt. Sollte es verstärkt zu Lufttransport über Städten kommen, müssen betroffene Lufträume geordnet und überwacht werden. Wie kompatibel Lufttransportsysteme mit den heute bereits relevanten urbanen Beförderungsmitteln sein müssen, wird kritisch diskutiert. Abschließend werden die Aspekte Akzeptanz durch die Kunden und Wirtschaftlichkeit ebenso angerissen, wie die hochproblematische Rohstoffgewinnung, die Entsorgung und das Recycling von Batterien.
Y1  - 2022
SN  - 978-3-658-36429-8
U6  - https://doi.org/10.1007/978-3-658-36430-4_53
N1  - Tagungsband zum 13. Wissenschaftsforum Mobilität, Beiträge des Wissenschaftsforums
SP  - 895
EP  - 916
PB  - Springer Gabler
CY  - Wiesbaden
ER  - 
TY  - THES
A1  - Bayer, Robin
T1  - Development of a novel in-vitro vascular model for determination of physiological and pathophysiological mechanobiology
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:38-362212
N1  - Dissertation, Universität zu Köln, 2021
PB  - Universität zu Köln
CY  - Köln
ER  - 
TY  - CHAP
A1  - Bayer, Robin
A1  - Hescheler, Jürgen
A1  - Artmann, Gerhard
A1  - Temiz Artmann, Aysegül
ED  - Staat, Manfred
ED  - Erni, Daniel
T1  - Treating arterial hypertension in a cell culture well
T2  - 3rd YRA MedTech Symposium 2019 : May 24 / 2019 / FH AachenW
N2  - Hypertension describes the pathological increase of blood pressure, which is most commonly associated with the increase of vascular wall stiffness [1]. Referring to the “Deutsche Bluthochdruck Liga” this pathology shows a growing trend in our aging society. In order to find novel pharmacological and probably personalized treatments, we want to present a functional approach to study biomechanical properties of a human aortic vascular model.
In this method review we will give an overview of recent studies which were carried out with the CellDrum technology [2] and underline the added value to already existing standard procedures known from the field of physiology.
Herein described CellDrum technology is a system to measure functional mechanical properties of cell monolayers and thin tissue constructs in-vitro. Additionally, the CellDrum enables to elucidate the mechanical response of cells to pharmacological drugs, toxins and vasoactive agents. Due to its highly flexible polymer support, cells can also be mechanically stimulated by steady and cyclic biaxial stretching.
Y1  - 2019
SN  - 978-3-940402-22-6
U6  - https://doi.org/10.17185/duepublico/48750
SP  - 5
EP  - 6
PB  - Universität Duisburg-Essen
CY  - Duisburg
ER  - 
TY  - JOUR
A1  - Bayer, Robin
A1  - Temiz Artmann, Aysegül
A1  - Digel, Ilya
A1  - Falkenstein, Julia
A1  - Artmann, Gerhard
A1  - Creutz, Till
A1  - Hescheler, Jürgen
T1  - Mechano-pharmacological testing of L-Type Ca²⁺ channel modulators via human vascular celldrum model
JF  - Cellular Physiology and Biochemistry
N2  - Background/Aims: This study aimed to establish a precise and well-defined working model, assessing pharmaceutical effects on vascular smooth muscle cell monolayer in-vitro. It describes various analysis techniques to determine the most suitable to measure the biomechanical impact of vasoactive agents by using CellDrum technology. Methods: The so-called CellDrum technology was applied to analyse the biomechanical properties of confluent human aorta muscle cells (haSMC) in monolayer. The cell generated tensions deviations in the range of a few N/m² are evaluated by the CellDrum technology. This study focuses on the dilative and contractive effects of L-type Ca²⁺ channel agonists and antagonists, respectively. We analyzed the effects of Bay K8644, nifedipine and verapamil. Three different measurement modes were developed and applied to determine the most appropriate analysis technique for the study purpose. These three operation modes are called, particular time mode" (PTM), "long term mode" (LTM) and "real-time mode" (RTM). Results: It was possible to quantify the biomechanical response of haSMCs to the addition of vasoactive agents using CellDrum technology. Due to the supplementation of 100nM Bay K8644, the tension increased approximately 10.6% from initial tension maximum, whereas, the treatment with nifedipine and verapamil caused a significant decrease in cellular tension: 10nM nifedipine decreased the biomechanical stress around 6,5% and 50nM verapamil by 2,8%, compared to the initial tension maximum. Additionally, all tested measurement modes provide similar results while focusing on different analysis parameters. Conclusion: The CellDrum technology allows highly sensitive biomechanical stress measurements of cultured haSMC monolayers. The mechanical stress responses evoked by the application of vasoactive calcium channel modulators were quantified functionally (N/m²). All tested operation modes resulted in equal findings, whereas each mode features operation-related data analysis.
Y1  - 2020
U6  - https://doi.org/10.33594/000000225
SN  - 1421-9778
VL  - 54
SP  - 371
EP  - 383
PB  - Cell Physiol Biochem Press
CY  - Düsseldorf
ER  - 
TY  - THES
A1  - Bayer, Sebastian
T1  - Ligatura : a contemporary blackletter
N2  - Die Ligatura ist eine modulare, experimentelle Schrift, die für die Anwendung in großen Formaten gestaltet ist. In ihrer äußeren Erscheinung orientiert sie sich an verschiedenen gebrochenen Schriften. Der Fokus in der Gestaltung der Schrift liegt allerdings auf der Verwendung von Ligaturen, welche sowohl nach historischen als auch nach zeitgenössischen Vorbildern und Gestaltungsprinzipien gebildet werden. Die Ligatura ermöglicht es, eine große Anzahl an Buchstabenkombinationen als Ligatur zu setzen. Dadurch wird innerhalb der Schrift mit Abständen zwischen Buchstaben und somit auch mit unseren Lesegewohnheiten gespielt. Die Ligatura verbindet nicht nur Buchstaben, Wörter und Zeilen, sondern auch klassische Schriftelemente mit der Moderne.
KW  - Typographie
KW  - Schriftgestaltung
KW  - Schriftmuster
KW  - Ligatur
KW  - Plakate
Y1  - 2022
PB  - FH Aachen
CY  - Aachen
ER  - 
TY  - JOUR
A1  - Bayon, Arnau
A1  - Valero, Daniel
A1  - Garcia-Bartual, Rafael
A1  - Vallés-Morán, Francisco José
A1  - López-Jiménez, P. Amparo
T1  - Performance assessment of OpenFOAM and FLOW-3D in the numerical modeling of a low Reynolds number hydraulic jump
JF  - Environmental Modelling & Software
N2  - A comparative performance analysis of the CFD platforms OpenFOAM and FLOW-3D is presented, focusing on a 3D swirling turbulent flow: a steady hydraulic jump at low Reynolds number. Turbulence is treated using RANS approach RNG k-ε. A Volume Of Fluid (VOF) method is used to track the air–water interface, consequently aeration is modeled using an Eulerian–Eulerian approach. Structured meshes of cubic elements are used to discretize the channel geometry. The numerical model accuracy is assessed comparing representative hydraulic jump variables (sequent depth ratio, roller length, mean velocity profiles, velocity decay or free surface profile) to experimental data. The model results are also compared to previous studies to broaden the result validation. Both codes reproduced the phenomenon under study concurring with experimental data, although special care must be taken when swirling flows occur. Both models can be used to reproduce the hydraulic performance of energy dissipation structures at low Reynolds numbers.
Y1  - 2016
SN  - 1364-8152
U6  - https://doi.org/10.1016/j.envsoft.2016.02.018
VL  - 80
SP  - 322
EP  - 335
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - BOOK
A1  - Baüer, Herbert
A1  - Gilch, Heinz Gerhard
A1  - Rath, Walter
A1  - Schümann, Uwe
T1  - Moisture-curing polyurethane-based hot-melt compositions = Feuchthärtbare Heisschmelz-Zusammensetzungen auf Polyurethanbasis
Y1  - 1990
N1  - EP0386879 18.10.1990 Veröffentlichungstag im Patentblatt  ; Volltext recherchierbar über
PB  - Europäisches Patentamt
CY  - München
ER  - 
TY  - CHAP
A1  - Bechstedt, U.
A1  - Berg, Georg P. A.
A1  - Hacker, U.
A1  - Hardt, Arno
A1  - Hürlimann, W.
A1  - Maier, R.
A1  - Martin, S.
A1  - Meissburger, J.
A1  - Römer, J. G. M.
A1  - Possen, P. von
A1  - Sagefka, T.
T1  - BIG KARL and COSY
T2  - The art and science of magnet design. A Festschrift in honor of Klaus Halbach. Vol. 1
Y1  - 1995
SP  - 19
EP  - 28
PB  - Lawrence Berkeley Lab., Univ. of California
CY  - Berkeley, CA.
ER  - 
TY  - JOUR
A1  - Bechstedt, U.
A1  - Haas, H.
A1  - Hacker, U.
A1  - Hardt, Arno
A1  - Henn, K.
A1  - Martin, S.
A1  - Wimmer, J.
T1  - Magnets for the German Spallation Source SNQ
JF  - IEEE transactions on nuclear science. Vol. 32, iss. 5
Y1  - 1985
SN  - 1558-1578 (E-Journal); 0018-9499 (Print)
SP  - 3631
EP  - 3633
ER  - 
TY  - JOUR
A1  - Becht, Alexander
A1  - Schollmayer, Curd
A1  - Monakhova, Yulia
A1  - Holzgrabe, Ulrike
T1  - Tracing the origin of paracetamol tablets by near-infrared, mid-infrared, and nuclear magnetic resonance spectroscopy using principal component analysis and linear discriminant analysis
JF  - Analytical and Bioanalytical Chemistry
N2  - Most drugs are no longer produced in their own countries by the pharmaceutical companies, but by contract manufacturers or at manufacturing sites in countries that can produce more cheaply. This not only makes it difficult to trace them back but also leaves room for criminal organizations to fake them unnoticed. For these reasons, it is becoming increasingly difficult to determine the exact origin of drugs. The goal of this work was to investigate how exactly this is possible by using different spectroscopic methods like nuclear magnetic resonance and near- and mid-infrared spectroscopy in combination with multivariate data analysis. As an example, 56 out of 64 different paracetamol preparations, collected from 19 countries around the world, were chosen to investigate whether it is possible to determine the pharmaceutical company, manufacturing site, or country of origin. By means of suitable pre-processing of the spectra and the different information contained in each method, principal component analysis was able to evaluate manufacturing relationships between individual companies and to differentiate between production sites or formulations. Linear discriminant analysis showed different results depending on the spectral method and purpose. For all spectroscopic methods, it was found that the classification of the preparations to their manufacturer achieves better results than the classification to their pharmaceutical company. The best results were obtained with nuclear magnetic resonance and near-infrared data, with 94.6%/99.6% and 98.7/100% of the spectra of the preparations correctly assigned to their pharmaceutical company or manufacturer.
KW  - IR
KW  - Manufacturer
KW  - Linear discriminant analysis
KW  - Principal component analysis
Y1  - 2021
U6  - https://doi.org/10.1007/s00216-021-03249-z
SN  - 1618-2650
VL  - 413
SP  - 3107
EP  - 3118
PB  - Springer Nature
ER  - 
TY  - JOUR
A1  - Beck, Daniel
A1  - Buchleitner, Martin
A1  - Ferrein, Alexander
A1  - Niemüller, Tim
A1  - Steinbauer, Gerald
T1  - Mostly Harmless & AllemaniACs - mixed innovations
Y1  - 2014
SP  - 1
EP  - 8
ER  - 
TY  - JOUR
A1  - Beckenbach, Isabel
A1  - Scheidweiler, Robert
T1  - Perfect ƒ-Matchings and ƒ-Factors in Hypergraphs - A Combinatorial Approach
JF  - Discrete Mathematics
N2  - We prove characterizations of the existence of perfect ƒ-matchings in uniform mengerian and perfect hypergraphs. Moreover, we investigate the ƒ-factor problem in balanced hypergraphs. For uniform balanced hypergraphs we prove two existence theorems with purely combinatorial arguments, whereas for non-uniform balanced hypergraphs we show that the ƒ-factor problem is NP-hard.
Y1  - 2016
U6  - https://doi.org/10.1016/j.disc.2017.05.005
SN  - 2192-7782
N1  - Als Volltext auch bei ZIB (Zuse Institute Berlin)
VL  - 240
IS  - 10
SP  - 2499
EP  - 2506
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Becker, Astrid
T1  - Anlagenmanagement und Aufgaben der DB Netz AG, Bauherrenvertretung und Wirtschaftlichkeit
N2  - In: Alfha.net / Sektion Bauingenieurwesen: 1. [Erster] Erfahrungsaustausch : Absolventen des Fachbereichs Bauingenieurwesens berichten. 13. Oktober 2006. S. 18 Übersicht des Vortrags
KW  - Anlagenwirtschaft
KW  - Bauherrenvertretung
KW  - Deutsche Bahn Netz AG
Y1  - 2006
ER  - 
TY  - JOUR
A1  - Becker, C.
A1  - Wallang, C.
A1  - Artmann, Gerhard
A1  - Jakse, G.
T1  - Mechanotransduction-bioreactor for tissue engineering of a ureter prosthesis
JF  - International Journal of Artificial Organs, The
Y1  - 2008
SN  - 0391-3988
N1  - Abstracts from the XXXV Congress of the European Society for Artificial Organs: 'Towards Future Biomedical Technologies' - ORAL PRESENTATIONS
VL  - 31
IS  - 7
SP  - 583
EP  - 583
ER  - 
TY  - CHAP
A1  - Becker, Jörg
A1  - Bergener, Philipp
A1  - Breuker, Dominic
A1  - Delfmann, Patrick
A1  - Eggert, Mathias
T1  - An Efficient Business Process Compliance Checking Approach
T2  - Governance and Sustainability in Information Systems. Managing the Transfer and Diffusion of IT : IFIP WG 8.6 International Working Conference, Hamburg, Germany, September 22-24, 2011. Proceedings
Y1  - 2011
U6  - https://doi.org/10.1007/978-3-642-24148-2_19
SP  - 282
EP  - 287
PB  - Springer
CY  - Berlin, Heidelberg
ER  - 
TY  - CHAP
A1  - Becker, Jörg
A1  - Bergener, Philipp
A1  - Delfmann, Patrick
A1  - Eggert, Mathias
A1  - Weiss, Burkhard
T1  - Supporting Business Process Compliance in Financial Institutions - A Model-Driven Approach
T2  - Proceedings of the 10th International Conference on Wirtschaftsinformatik : 16 - 18 February 2011, Zurich, Switzerland
Y1  - 2011
N1  - Wirtschaftsinformatik Proceedings 2011. 75.
SP  - 355
EP  - 364
ER  - 
TY  - JOUR
A1  - Becker, Jörg
A1  - Delfmann, Patrick
A1  - Dietrich, Hanns-Alexander
A1  - Steinhorst, Matthias
A1  - Eggert, Mathias
T1  - Business Process Compliance Checking — Applying and Evaluating a Generic Pattern Matching Approach for Conceptual Models in the Financial Sector
JF  - Information Systems Frontiers
N2  - Given the strong increase in regulatory requirements for business processes the management of business process compliance becomes a more and more regarded field in IS research. Several methods have been developed to support compliance checking of conceptual models. However, their focus on distinct modeling languages and mostly linear (i.e., predecessor-successor related) compliance rules may hinder widespread adoption and application in practice. Furthermore, hardly any of them has been evaluated in a real-world setting. We address this issue by applying a generic pattern matching approach for conceptual models to business process compliance checking in the financial sector. It consists of a model query language, a search algorithm and a corresponding modelling tool prototype. It is (1) applicable for all graph-based conceptual modeling languages and (2) for different kinds of compliance rules. Furthermore, based on an applicability check, we (3) evaluate the approach in a financial industry project setting against its relevance for decision support of audit and compliance management tasks.
Y1  - 2016
U6  - https://doi.org/10.1007/s10796-014-9529-y
SN  - 1572-9419
VL  - 18
IS  - 2
SP  - 359
EP  - 405
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Becker, Jörg
A1  - Delfmann, Patrick
A1  - Eggert, Mathias
A1  - Schwittay, Sebastian
T1  - Generalizability and Applicability of Model-Based Business Process Compliance-Checking Approaches — A State-of-the-Art Analysis and Research Roadmap
JF  - Business Research : BuR
N2  - With a steady increase of regulatory requirements for business processes, automation support of compliance management is a field garnering increasing attention in Information Systems research. Several approaches have been developed to support compliance checking of process models. One major challenge for such approaches is their ability to handle different modeling techniques and compliance rules in order to enable widespread adoption and application. Applying a structured literature search strategy, we reflect and discuss compliance-checking approaches in order to provide an insight into their generalizability and evaluation. The results imply that current approaches mainly focus on special modeling techniques and/or a restricted set of types of compliance rules. Most approaches abstain from real-world evaluation which raises the question of their practical applicability. Referring to the search results, we propose a roadmap for further research in model-based business process compliance checking.
Y1  - 2012
U6  - https://doi.org/10.1007/BF03342739
SN  - 1866-8658
VL  - 5
IS  - 2
SP  - 221
EP  - 247
PB  - Springer
CY  - Heidelberg
ER  - 
TY  - CHAP
A1  - Becker, Jörg
A1  - Eggert, Mathias
A1  - Bruning, Dennis
A1  - Saat, Jan
T1  - Applicability of Business Process Model Analysis Approaches – A Case Study in Financial Services Consulting
T2  - Wirtschaftsinformatik Proceedings 2013
Y1  - 2013
N1  - 11th International Conference on Wirtschaftsinformatik,
27th February – 01st March 2013, Leipzig, Germany
SP  - 1181
EP  - 1195
ER  - 
TY  - CHAP
A1  - Becker, Jörg
A1  - Eggert, Mathias
A1  - Fleischer, Stefan
A1  - Heddier, Marcel
A1  - Knackstedt, Ralf
T1  - Data Warehouse Design and Legal Visualization – The Applicability of H2 for Reporting
T2  - Proceedings of the 23rd Australasian Conference on Information Systems 2012
Y1  - 2012
N1  - Australasian Conference on Information Systems (23rd : 2012 : Geelong, Victoria)
ER  - 
TY  - CHAP
A1  - Becker, Jörg
A1  - Eggert, Mathias
A1  - Fleischer, Stefan
A1  - Knackstedt, Ralf
T1  - How to Teach Regulatory Compliant Data Warehouse Engineering?
T2  - Proceedings of the Nineteenth Americas Conference on Information Systems, Chicago, Illinois, August 15-17, 2013.
Y1  - 2013
N1  - AMCIS 2013 Proceedings
ER  - 
TY  - CHAP
A1  - Becker, Jörg
A1  - Eggert, Mathias
A1  - Heddier, Marcel
A1  - Knackstedt, Ralf
T1  - Merging Conceptual Modeling and Law for Legally Compliant Information Systems Design - A Framework-Based Research Agenda
T2  - 45th Hawaii International Conference on System Sciences 2012
Y1  - 2012
SN  - 978-0-7695-4525-7
U6  - https://doi.org/10.1109/HICSS.2012.428
SP  - 5241
EP  - 5248
ER  - 
TY  - CHAP
A1  - Becker, Jörg
A1  - Eggert, Mathias
A1  - Knackstedt, Ralf
T1  - Forschungslandkarte Rechtsinformatik und Informationsrecht
T2  - Proceedings of the Internationales Rechtsinformatik Sysmposium (IRIS), Salzburg, Österreich, 2010
Y1  - 2010
ER  - 
TY  - CHAP
A1  - Becker, Jörg
A1  - Eggert, Mathias
A1  - Knackstedt, Ralf
T1  - Der Beitrag der Referenzmodellierung zur Compliance im Reporting des Finanzsektors
T2  - Business Intelligence Operational Structures: Towards the Design of a Reference Process Map
Y1  - 2010
N1  - Zweites Forschungskolloquium Business Intelligence (FKBI 10)
der GI-Fachgruppe Management Support Systems
in Zusammenarbeit mit dem Competence Center
for Business Intelligence an der Technischen Universität Dresden
am 17. und 18. September 2010
in Dresden
SP  - 11
EP  - 18
ER  -