TY  - JOUR
A1  - Tran, Duc Hung
A1  - Ebeling, Felix
T1  - Die risikoadäquate Bestimmung von Eigenkapitalkosten bei konzerninternen Routinefunktionen
JF  - Der Betrieb
N2  - Eigenkapitalkosten sind eine wesentliche Determinante bei der Wertbestimmung von Unternehmen und Unternehmensteilen. Die Eigenkapitalkosten werden regelmäßig mittels des CAPM bestimmt. Für sog. konzerninterne Routinefunktionen mit geringem Risiko stellt diese Bestimmung mittels CAPM ein Problem dar, da börsennotierte Peergroups für eine zuverlässige Bestimmung des Beta-Faktors meist nicht identifizierbar sind. Damit ergeben sich bei Bewertungen von Routineunternehmen Unsicherheiten und Konfliktpotenzial in steuerlichen Betriebsprüfungen. Dieser Beitrag gibt einen Überblick der in der Praxis genutzten Ansätze und stellt eine theoretische Fundierung zur Bestimmung der Eigenkapitalkosten von konzerninternen Routinefunktionen vor. Dabei wird verdeutlicht, dass Eigenkapitalkosten von konzerninternen Routinefunktionen nicht denen des Gesamtkonzerns entsprechen und Praktikeransätze eine grundsätzliche Berechtigung besitzen.
Y1  - 2021
SN  - 0005-9935
VL  - 74
IS  - 29
SP  - 1553
EP  - 1560
ER  - 
TY  - JOUR
A1  - Hugenroth, Kristin
A1  - Borchardt, Ralf
A1  - Ritter, Philine
A1  - Groß‑Hardt, Sascha
A1  - Meyns, Bart
A1  - Verbelen, Tom
A1  - Steinseifer, Ulrich
A1  - Kaufmann, Tim A. S.
A1  - Engelmann, Ulrich M.
T1  - Optimizing cerebral perfusion and hemodynamics during cardiopulmonary bypass through cannula design combining in silico, in vitro and in vivo input
JF  - Scientific Reports
N2  - Cardiopulmonary bypass (CPB) is a standard technique for cardiac surgery, but comes with the risk of severe neurological complications (e.g. stroke) caused by embolisms and/or reduced cerebral perfusion. We report on an aortic cannula prototype design (optiCAN) with helical outflow and jet-splitting dispersion tip that could reduce the risk of embolic events and restores cerebral perfusion to 97.5% of physiological flow during CPB in vivo, whereas a commercial curved-tip cannula yields 74.6%. In further in vitro comparison, pressure loss and hemolysis parameters of optiCAN remain unaffected. Results are reproducibly confirmed in silico for an exemplary human aortic anatomy via computational fluid dynamics (CFD) simulations. Based on CFD simulations, we firstly show that optiCAN design improves aortic root washout, which reduces the risk of thromboembolism. Secondly, we identify regions of the aortic intima with increased risk of plaque release by correlating areas of enhanced plaque growth and high wall shear stresses (WSS). From this we propose another easy-to-manufacture cannula design (opti2CAN) that decreases areas burdened by high WSS, while preserving physiological cerebral flow and favorable hemodynamics. With this novel cannula design, we propose a cannulation option to reduce neurological complications and the prevalence of stroke in high-risk patients after CPB.
Y1  - 2021
U6  - https://doi.org/10.1038/s41598-021-96397-2
SN  - 2045-2322
VL  - 11
IS  - Art. No. 16800
SP  - 1
EP  - 12
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Brockhaus, Moritz K.
A1  - Behbahani, Mehdi
A1  - Muris, Farina
A1  - Jansen, Sebastian V.
A1  - Schmitz- Rode, Thomas
A1  - Steinseifer, Ulrich
A1  - Clauser, Johanna C.
T1  - In vitro thrombogenicity testing of pulsatile mechanical circulatory support systems: Design and proof-of-concept
JF  - Artificial Organs
N2  - Thrombogenic complications are a main issue in mechanical circulatory support (MCS). There is no validated in vitro method available to quantitatively assess the thrombogenic performance of pulsatile MCS devices under realistic hemodynamic conditions. The aim of this study is to propose a method to evaluate the thrombogenic potential of new designs without the use of complex in-vivo trials. This study presents a novel in vitro method for reproducible thrombogenicity testing of pulsatile MCS systems using low molecular weight heparinized porcine blood. Blood parameters are continuously measured with full blood thromboelastometry (ROTEM; EXTEM, FIBTEM and a custom-made analysis HEPNATEM). Thrombus formation is optically observed after four hours of testing. The results of three experiments are presented each with two parallel loops. The area of thrombus formation inside the MCS device was reproducible. The implantation of a filter inside the loop catches embolizing thrombi without a measurable increase of platelet activation, allowing conclusions of the place of origin of thrombi inside the device. EXTEM and FIBTEM parameters such as clotting velocity (α) and maximum clot firmness (MCF) show a total decrease by around 6% with a characteristic kink after 180 minutes. HEPNATEM α and MCF rise within the first 180 minutes indicate a continuously increasing activation level of coagulation. After 180 minutes, the consumption of clotting factors prevails, resulting in a decrease of α and MCF. With the designed mock loop and the presented protocol we are able to identify thrombogenic hot spots inside a pulsatile pump and characterize their thrombogenic potential.
Y1  - 2021
U6  - https://doi.org/10.1111/aor.14046
SN  - 1525-1594
VL  - 45
IS  - 12
SP  - 1513
EP  - 1521
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Arampatzis, Adamantios
A1  - Karamanidis, Kiros
A1  - Albracht, Kirsten
T1  - Adaptational responses of the human Achilles tendon by modulation of the applied cyclic strain magnitude
JF  - Journal of Experimental Biology
Y1  - 2007
U6  - https://doi.org/10.1242/jeb.003814
SN  - 0022-0949
VL  - 210
IS  - 15
SP  - 2743
EP  - 2753
ER  - 
TY  - JOUR
A1  - Albracht, Kirsten
A1  - Arampatzis, Adamantios
T1  - Influence of the mechanical properties of the muscle-tendon unit on force generation in runners with different running economy
JF  - Biological Cybernetics
Y1  - 2006
U6  - https://doi.org/10.1007/s00422-006-0070-z
SN  - 1432-0770
VL  - 95
IS  - 1
SP  - 87
EP  - 96
ER  - 
TY  - JOUR
A1  - Wollert, Jörg
A1  - Booke, Andreas
T1  - IoT von der Stange
JF  - elektronik
N2  - Heute sollte am besten jedes Gerät in die große Rechnerwolke eingebettet werden. Doch so einfach ist das nicht, denn Cloud ist viel mehr als nur das Internet der Dinge. Als Anwender muss man sich also fragen, welche Dienste man möchte und welchem Anbieter man sein Vertrauen schenkt.
KW  - Einbetten in das Internet der Dinge
Y1  - 2016
IS  - 21 (2016)
SP  - 30
EP  - 37
PB  - WEKA-Fachmedien
CY  - München
ER  - 
TY  - JOUR
A1  - Sousa, Marcos A. M.
A1  - Siqueira, Jose R. Jr.
A1  - Vercik, Andres
A1  - Schöning, Michael Josef
A1  - Oliveira, Osvaldo N. Jr.
T1  - Determining the optimized layer-by-layer film architecture with dendrimer/carbon nanotubes for field-effect sensors
JF  - IEEE Sensors Journal
N2  - The capacitive electrolyte–insulator–semiconductor (EIS) structure is a typical device based on a field-effect sensor platform. With a simple silicon-based structure, EIS have been useful for several sensing applications, especially with incorporation of nanostructured films to modulate the ionic transport and the flat-band potential. In this paper, we report on ion transport and changes in flat-band potential in EIS sensors made with layer-by-layer films containing poly(amidoamine) (PAMAM) dendrimer and single-walled carbon nanotubes (SWNTs) adsorbed on p-Si/SiO 2 /Ta 2 O 5 chips with an Al ohmic contact. The impedance spectra were fitted using an equivalent circuit model, from which we could determine parameters such as the double-layer capacitance. This capacitance decreased with the number of bilayers owing to space charge accumulated at the electrolyte–insulator interface, up to three PAMAM/SWNTs bilayers, after which it stabilized. The charge-transfer resistance was also minimum for three bilayers, thus indicating that this is the ideal architecture for an optimized EIS performance. The understanding of the influence of nanostructures and the fine control of operation parameters pave the way for optimizing the design and performance of new EIS sensors.
Y1  - 2017
U6  - https://doi.org/10.1109/JSEN.2017.2653238
SN  - 1558-1748
VL  - 17
IS  - 6
SP  - 1735
EP  - 1740
PB  - IEEE
CY  - New York
ER  - 
TY  - JOUR
A1  - Schneider, Wilhelm
A1  - Schneider, Bettina
A1  - Kinder, Stephanie
A1  - Meinhardt, Kerstin
T1  - Grundbegriffe der Abgabenordnung
JF  - Das Wirtschaftsstudium : wisu ; Zeitschrift für Ausbildung, Examen, Berufseinstieg und Fortbildung
Y1  - 2017
SN  - 0340-3084
N1  - Printausgabe in der Bibliothek Eupener Str. unter der Signatur 43 Z 568
VL  - 46
IS  - 5
SP  - 575
EP  - 581
PB  - Lange
CY  - Düsseldorf
ER  - 
TY  - JOUR
A1  - Pfaff, Raphael
A1  - Schmidt, Bernd
T1  - Daten in der Cloud - und dann?
JF  - Deine Bahn
N2  - Schienenverkehrssysteme stehen in zunehmendem Wettbewerb, sowohl untereinander als auch mit anderen Verkehrsträgern. Als wichtiger Aspekt zur Steigerung der Kosteneffizienz wird die Digitalisierung des Betriebs und der Fahrzeuge betrachtet. Über eine Prognose der Ausfallwahrscheinlichkeit bzw. Restlebensdauer von Subsystemen können mittels Digitalisierung die Instandhaltungskosten gesenkt werden. Die geringen Fehlerraten im System Bahn machen die Nutzung besonderer Simulationstechniken notwendig. In diesem Beitrag wird gezeigt, wie sich die Subsystemverfügbarkeit aus den beobachteten Fehlerraten der Teilfunktionen vorhersagen lässt.
Y1  - 2016
SN  - 0948-7263
IS  - 6
SP  - 50
EP  - 55
PB  - Bahn-Fachverlag
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Hebel, Christoph
T1  - Erfahrungen mit der RIN und aktuelle Weiterentwicklungen
JF  - Straßenverkehrstechnik: Organ der Forschungsgesellschaft für Straßen- und Verkehrswesen, der Bundesvereinigung der Straßenbau- und Verkehrsingenieure und der Österreichischen Forschungsgesellschaft Straße und Verkehr; Zeitschrift für Verkehrsplanung, Verkehrsmanagement, Verkehrssicherheit, Verkehrstechnik
Y1  - 2017
SN  - 0039-2219
N1  - gedruckt in der Bereichsbibliothek Bayernallee vorhanden
VL  - 61
IS  - 7
SP  - 443
EP  - 448
PB  - Kirschbaum-Verlag
CY  - Bonn
ER  - 
TY  - JOUR
A1  - Reinhardt, T.
A1  - Bitz, Andreas
A1  - El Ouardi, A.
A1  - Streckert, J.
A1  - Sommer, A.
A1  - Lerchl, A.
A1  - Hansen, V.
T1  - Exposure set-ups for in vivo experiments using radial waveguides
JF  - Radiation Protection Dosimetry
Y1  - 2007
U6  - https://doi.org/10.1093/rpd/ncm370
SN  - 1742-3406
VL  - 124
IS  - 1
SP  - 21
EP  - 26
ER  - 
TY  - JOUR
A1  - Sommer, Angela M.
A1  - Bitz, Andreas
A1  - Streckert, Joachim
A1  - Hansen, Volkert W.
A1  - Lerchl, Alexander
T1  - Lymphoma development in mice chronically exposed to UMTS-modulated radiofrequency electromagnetic fields
JF  - Radiation Research
Y1  - 2007
U6  - https://doi.org/10.1667/RR0857.1
SN  - 1938-5404
VL  - 168
IS  - 1
SP  - 72
EP  - 80
ER  - 
TY  - JOUR
A1  - Sukhotina, Irina
A1  - Streckert, Joachim R.
A1  - Bitz, Andreas
A1  - Hansen, Volkert W.
A1  - Lerchl, Alexander
T1  - 1800 MHz electromagnetic field effects on melatonin release from isolated pineal glands
JF  - Journal of Pineal Research
Y1  - 2006
U6  - https://doi.org/10.1111/j.1600-079X.2005.00284.x
SN  - 1600-079X
VL  - 40
IS  - 1
SP  - 86
EP  - 91
ER  - 
TY  - JOUR
A1  - Franke, Helmut
A1  - Streckert, Joachim
A1  - Bitz, Andreas
A1  - Goeke, Johannes
A1  - Hansen, Volkert
A1  - Ringelstein, E. Bernd
A1  - Nattkämper, Heiner
A1  - Galle, Hans-Joachim
A1  - Stögbauer, Florian
T1  - Effects of Universal Mobile Telecommunications System (UMTS) electromagnetic fields on the blood-brain barrier in vitro
JF  - Radiation Research
Y1  - 2005
U6  - https://doi.org/10.1667/RR3424.1
SN  - 1938-5404
VL  - 164
IS  - 3
SP  - 258
EP  - 269
ER  - 
TY  - JOUR
A1  - Wissen, M.
A1  - Bogdanski, N.
A1  - Scheer, H.-C.
A1  - Bitz, Andreas
A1  - Ahrens, G.
A1  - Gruetzner, G.
T1  - Implication of the light polarisation for UV curing of pre-patterned resists
JF  - Microelectronic Engineering
Y1  - 2005
U6  - https://doi.org/10.1016/j.mee.2004.12.099
SN  - 0167-9317
VL  - 78-79
SP  - 659
EP  - 664
ER  - 
TY  - JOUR
A1  - Ndoumbè Mbonjo Mbonjo, H.
A1  - Streckert, J.
A1  - Bitz, Andreas
A1  - Hansen, V.
A1  - Glasmachers, A.
A1  - Gencol, S.
A1  - Rozic, D.
T1  - Generic UMTS test signal for RF bioelectromagnetic studies
JF  - Bioelectromagnetics
Y1  - 2004
U6  - https://doi.org/10.1002/bem.20007
SN  - 1521-186X
VL  - 25
IS  - 6
SP  - 415
EP  - 425
ER  - 
TY  - JOUR
A1  - Sommer, Angela M.
A1  - Streckert, Joachim
A1  - Bitz, Andreas
A1  - Hansen, Volkert W.
A1  - Lerchl, Alexander
T1  - No effects of GSM-modulated 900 MHz electromagnetic fields on survival rate and spontaneous development of lymphoma in female AKR/J mice
JF  - BMC Cancer
Y1  - 2004
U6  - https://doi.org/10.1186/1471-2407-4-77
VL  - 77
IS  - 4
ER  - 
TY  - JOUR
A1  - Hansen, Volkert W.
A1  - Bitz, Andreas
A1  - Streckert, Joachim R.
T1  - RF Exposure of Biological Systems in Radial Waveguides
JF  - IEEE Transactions on Electromagnetic Compatibility
Y1  - 1999
U6  - https://doi.org/10.1109/15.809852
SN  - 1558-187X
VL  - 41
IS  - 4
SP  - 487
EP  - 493
ER  - 
TY  - JOUR
A1  - Balzer, Hermann
A1  - Streit, Daniel
T1  - Das Translationsrisiko multinationaler Konzerne in Deutschland: Eine explorative Analyse von Verständnis, Bedeutung und Management-Praxis mit Hilfe der Critical Incident Technique
JF  - Schmalenbachs Zeitschrift für betriebswirtschaftliche Forschung
Y1  - 2017
U6  - https://doi.org/10.1007/s41471-017-0029-x
SN  - 2366-6153
N1  - Arbeitskreis Finanzierung der Schmalenbach-Gesellschaft e.V.
IS  - Online first
SP  - 1
EP  - 40
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Arreola, Julio
A1  - Oberländer, Jan
A1  - Mätzkow, M.
A1  - Keusgen, Michael
A1  - Schöning, Michael Josef
T1  - Surface functionalization for spore-based biosensors with organosilanes
JF  - Electrochimica Acta
N2  - In the present work, surface functionalization of different sensor materials was studied. Organosilanes are well known to serve as coupling agent for biomolecules or cells on inorganic materials. 3-aminopropyltriethoxysilane (APTES) was used to attach microbiological spores time to an interdigitated sensor surface. The functionality and physical properties of APTES were studied on isolated sensor materials, namely silicon dioxide (SiO2) and platinum (Pt) as well as the combined material on sensor level. A predominant immobilization of spores could be demonstrated on SiO2 surfaces. Additionally, the impedance signal of APTES-functionalized biosensor chips has been investigated.
Y1  - 2017
U6  - https://doi.org/10.1016/j.electacta.2017.04.157
SN  - 0013-4686
VL  - 241
SP  - 237
EP  - 243
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Pfaff, Raphael
A1  - Enning, Manfred
T1  - Güterwagen 4.0 - Der Güterwagen für das Internet der Dinge. Teil 2: Ausgewählte technische Aspekte und Prozesse
JF  - ETR - Eisenbahntechnische Rundschau
Y1  - 2017
SN  - 0013-2845
VL  - 66
IS  - 5
SP  - 74
EP  - 77
PB  - DVV Media Group
CY  - Hamburg
ER  - 
TY  - JOUR
A1  - Rieke, Christian
A1  - Stollenwerk, Dominik
A1  - Dahmen, Markus
A1  - Pieper, Martin
T1  - Modeling and optimization of a biogas plant for a demand-driven energy supply
JF  - Energy
N2  - Due to the Renewable Energy Act, in Germany it is planned to increase the amount of renewable energy carriers up to 60%. One of the main problems is the fluctuating supply of wind and solar energy. Here biogas plants provide a solution, because a demand-driven supply is possible. Before running such a plant, it is necessary to simulate and optimize the process. This paper provides a new model of a biogas plant, which is as accurate as the standard ADM1 model. The advantage compared to ADM1 is that it is based on only four parameters compared to 28. Applying this model, an optimization was installed, which allows a demand-driven supply by biogas plants. Finally the results are confirmed by several experiments and measurements with a real test plant.
Y1  - 2018
U6  - https://doi.org/10.1016/j.energy.2017.12.073
SN  - 0360-5442
VL  - 145
SP  - 657
EP  - 664
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Peterson, Leif Arne
A1  - Röth, Thilo
A1  - Uibel, Thomas
T1  - Einsatz von Holzwerkstoffen in Fahrzeugstrukturen
JF  - Bauen mit Holz
Y1  - 2017
SN  - 0005-6545
N1  - gedruckt in der Bereichsbibliothek Bayernallee
IS  - 3
SP  - 32
EP  - 38
PB  - Bruderverlag
CY  - Köln
ER  - 
TY  - JOUR
A1  - Uibel, Thomas
T1  - Untersuchungen zum Spaltverhalten von Holzschrauben. Teil 1
JF  - Bauen mit Holz
Y1  - 2016
SN  - 0005-6545
N1  - gedruckte Zeitschrift in der Bereichsbibliothek Bayernallee
IS  - 10
SP  - 40
EP  - 42
PB  - Rudolf Müller
CY  - Köln
ER  - 
TY  - JOUR
A1  - Moorkamp, Wilfried
A1  - Peterson, Leif Arne
A1  - Uibel, Thomas
T1  - Mit guten Aussichten. Bericht über den Studiengang Holzingenieurwesen an der FH Aachen
JF  - Bauen mit Holz
Y1  - 2016
SN  - 0005-6545
N1  - gedruckte Zeitschrift in der Bereichsbibliothek Bayernallee
IS  - 5
SP  - 33
EP  - 36
PB  - Rudolf Müller
CY  - Köln
ER  - 
TY  - JOUR
A1  - Billerbeck, Katrin
A1  - Barnat, Miriam
A1  - Knutzen, Sönke
T1  - Kompetenzorientierung auf dem Prüfstand. Erprobung von Indikatoren für den Kulturwandel
JF  - Die Hochschullehre
N2  - Der Beitrag fokussiert die Frage nach dem Stand des durch die Bologna-Reform angestoßenen Kulturwandels im Hinblick auf Kompetenzorientierung am Beispiel der Technischen Universität Hamburg (TUHH). An der TUHH wird bereits seit einigen Jahren daran gearbeitet, die Lehre grundlegend neu auszurichten. Hierfür setzt das hochschuldidaktische "Zentrum für Lehre und Lernen" (ZLL) verschiedene Maßnahmen ein, wie z.B. eine finanzielle und didaktische Unterstützung von Lehrenden bei der Umstellung ihrer Veranstaltungen, Weiterqualifizierungsangebote und Informationsmaterial. Die Maßnahmen ebenso wie die innovierten Veranstaltungen werden von Lehrenden und Studierenden gut evaluiert. Nach dem Ansatz des Constructive Alignments lässt sich jedoch davon ausgehen, dass der Bereich der Prüfungen für eine Einschätzung des Status Quo der Kompetenzorientierung besonders relevant ist. Dieser wird deshalb anhand der beiden Kriterien Prüfungsformate und Schwierigkeitsstufen von Prüfungsaufgaben näher beleuchtet, die eng mit der Kompetenzorientierung zusammen hängen. Ergebnisse hierzu aus einer universitätsweiten Datenbank zur Studienorganisation sowie aus einer Online-Umfrage unter Studierenden weisen darauf hin, dass das Prüfungsformat "Klausur" nach wie vor am stärksten verbreitet ist; zugleich sind die Studierenden nach einer Selbsteinschätzung in Prüfungen vorrangig mit Aufgaben auf den Taxonomieniveaus "Wiedergeben" und "Anwenden" konfrontiert. Dies lässt sich als Hinweis darauf interpretieren, dass es im Hinblick auf eine Kompetenzorientierung in den Prüfungen noch weiteren Veränderungsbedarf gibt.
Y1  - 2016
U6  - https://doi.org/10.3278/HSL1616W
SN  - 2199-8825
VL  - 2016
IS  - 16
PB  - WBV Media
CY  - Bielefeld
ER  - 
TY  - JOUR
A1  - Oberländer, Jan
A1  - Mayer, Marlena
A1  - Greeff, Anton
A1  - Keusgen, Michael
A1  - Schöning, Michael Josef
T1  - Spore-based biosensor to monitor the microbicidal efficacy of gaseous hydrogen peroxide sterilization processes
JF  - Biosensors and Bioelectronics
N2  - In this work, a spore-based biosensor is evaluated to monitor the microbicidal efficacy of sterilization processes applying gaseous hydrogen peroxide (H2O2). The sensor is based on interdigitated electrode structures (IDEs) that have been fabricated by means of thin-film technologies. Impedimetric measurements are applied to study the effect of sterilization process on spores of Bacillus atrophaeus. This resilient microorganism is commonly used in industry to proof the sterilization efficiency. The sensor measurements are accompanied by conventional microbiological challenge tests, as well as morphological characterizations with scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The sensor measurements are correlated with the microbiological test routines. In both methods, namely the sensor-based and microbiological one, a tailing effect has been observed. The results are evaluated and discussed in a three-dimensional calibration plot demonstrating the sensor's suitability to enable a rapid process decision in terms of a successfully performed sterilization.
Y1  - 2018
U6  - https://doi.org/10.1016/j.bios.2017.12.045
SN  - 0956-5663
VL  - 104
SP  - 87
EP  - 94
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Jörissen, Jörg
A1  - Heger, Michael
T1  - Zur Wirkung hochschuldidaktisch fundierter und in den Fachbereichen verankerter Lehrveranstaltungsevaluation
JF  - Qualität in der Wissenschaft (QiW)
Y1  - 2014
SN  - 1860-3041
VL  - 8
IS  - 2+3
SP  - 70
EP  - 80
PB  - Universitätsverlag Webler
CY  - Bielefeld
ER  - 
TY  - JOUR
A1  - Reifenberg, Dirk
A1  - Jörissen, Jörg
A1  - Peters, David
T1  - Ausgewählte Ergebnisse einer kooperativen Studie zu Hochschulwechsel und Studienabbruch
JF  - Qualität in der Wissenschaft (QiW)
Y1  - 2015
SN  - 1860-3041
VL  - 9
IS  - 3+4
SP  - 99
EP  - 105
PB  - UVW Universitätsverlag Webler
CY  - Bielefeld
ER  - 
TY  - JOUR
A1  - Reisgen, Uwe
A1  - Schäfer, Johannes
A1  - Wilms, Konrad
A1  - Schleser, Markus
T1  - Aufmischungsarmes, dickschichtiges MSG-Auftragschweißen mit entkoppelter Zweidrahttechnik
JF  - Schweißen und Schneiden
N2  - Für Auftragschweißaufgaben existiert eine Vielzahl an verfahrenstechnischen
Prozessvarianten, die je nach Charakteristik und Anwendungsfall
ausgewählt werden. Ein Nachteil der vorwiegend verwendeten Metall-
Schutzgasschweißprozesse (MSG) für das Auftragschweißen ist durch die
direkte Kopplung von Drahtvorschub zu Energieeintrag gegeben. Die vorgestellte
Zweidraht-Prozessvariante kann durch die Ausbildung eines übertragenen
und eines nicht-übertragenen Lichtbogens die elektrische Leistung
beider Lichtbögen variieren und damit einen direkten Einfluss auf
die Prozessgrößen Abschmelzleistung und Aufschmelzgrad nehmen. Im
Speziellen besteht über die Entkopplung von Drahtvorschub zu Schweißstromstärke
die Möglichkeit eines niederenergetischen Betriebs trotz hoher
Drahtvorschubgeschwindigkeit. Damit lassen sich Aufschmelzgrade
unter 2% umsetzen und Abschmelzleistungen bis zu 15 kg/h realisieren.
Y1  - 2017
SN  - 0036-7184
VL  - 69
IS  - 12
SP  - 838
EP  - 843
PB  - DVS Verlag
CY  - Düsseldorf
ER  - 
TY  - JOUR
A1  - Laumann, Jörg
A1  - Mainz, Stefan
A1  - Krahwinkel, Manuel
T1  - Traglastuntersuchungen an Koppelpfetten bei Biegung um die schwache Achse und Torsion
JF  - Stahlbau
Y1  - 2017
U6  - https://doi.org/10.1002/stab.201710544
SN  - 0038-9145
VL  - 86
IS  - 11
SP  - 1005
EP  - 1016
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Braband, Henrik
A1  - Paulßen, Elisabeth
A1  - Abram, Ulrich
T1  - Nitridorhenium(V) Complexes with 1,3-Dialkyl-4,5-dimethylimidazole-2-ylidenes
JF  - Zeitschrift für anorganische und allgemeine Chemie : ZAAC = Journal of inorganic and general chemistry
Y1  - 2006
U6  - https://doi.org/10.1002/zaac.200600002
SN  - 1521-3749
VL  - 632
IS  - 6
SP  - 1051
EP  - 1056
ER  - 
TY  - JOUR
A1  - Paulßen, Elisabeth
A1  - Schweighöfer, Philip V.
A1  - Abram, Ulrich
T1  - Reactions of [ReOX3(PPh3)2] Complexes (X = Cl, Br) with Phenylacetylene and the Structures of the Products
JF  - Zeitschrift für anorganische und allgemeine Chemie : ZAAC = Journal of inorganic and general chemistry
N2  - Oxorhenium(V) complexes [ReOX3(PPh3)2] (X = Cl, Br) react with phenylacetylene under formation of complexes with ylide-type ligands. Compounds of the compositions [ReOCl3(PPh3){C(Ph)C(H)(PPh3)}] (1), [ReOBr3(OPPh3){C(Ph)C(H)(PPh3)}] (2), and [ReOBr3(OPPh3){C(H)C(Ph)(PPh3)}] (3) were isolated and characterized by X-ray diffraction. They contain a ligand, which was formed by a nucleophilic attack of released PPh3 at coordinated phenylacetylene. The structures of the products show that there is no preferable position for this attack. Cleavage of the Re–C bond in 3 and dimerization of the organic ligand resulted in the formation of the [{(PPh3)(H)CC(Ph)}2]2+ cation, which crystallized as its [(ReOBr4)(OReO3)]2– salt.
Y1  - 2010
U6  - https://doi.org/10.1002/zaac.200900478
SN  - 1521-3749
VL  - 636
IS  - 5
SP  - 779
EP  - 783
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Paulßen, Elisabeth
A1  - Kückmann, Theresa
A1  - Abram, Ulrich
T1  - Silver(I) Complexes of 1,3-Dialkyl-4,5-dimethylimidazol-2-ylidenes and their Use as Precursors for the Synthesis of Rhenium(V) NHC Complexes
JF  - Zeitschrift für anorganische und allgemeine Chemie : ZAAC = Journal of inorganic and general chemistry
Y1  - 2007
U6  - https://doi.org/10.1002/zaac.200700021
SN  - 1521-3749
VL  - 633
IS  - 5-6
SP  - 830
EP  - 834
ER  - 
TY  - JOUR
A1  - Braband, Henrik
A1  - Yegen, Eda
A1  - Paulßen, Elisabeth
A1  - Abram, Ulrich
T1  - [{ReN(PMe2Ph)3}{ReO3N}]2 – Structural Evidence for the Nitridotrioxorhenate(VII) Anion, [ReO3N]2−
JF  - Zeitschrift für anorganische und allgemeine Chemie : ZAAC = Journal of inorganic and general chemistry
Y1  - 2005
U6  - https://doi.org/10.1002/zaac.200500240
SN  - 1521-3749
VL  - 631
IS  - 12
SP  - 2408
EP  - 2410
ER  - 
TY  - JOUR
A1  - Paulßen, Elisabeth
A1  - Alberto, Roger
A1  - Abram, Ulrich
T1  - Synthesis, Characterization, and Structures of R3EOTcO3 Complexes (E = C, Si, Ge, Sn, Pb) and Related Compounds
JF  - Inorganic Chemistry
N2  - AgTcO4 reacts with R3ECl compounds (E = C, Si, Ge, Sn, Pb; R = Me, iPr, tBu, Ph), tBu2SnCl2, or PhMgCl under formation of novel trioxotechnetium(VII) derivatives. The carbon and silicon derivatives readily undergo decomposition, which was proven by 99Tc NMR spectroscopy and the isolation of decomposition products such as [TcOCl3(THF)(OH2)]. Compounds [Ph3GeOTcO3], [(THF)Ph3SnOTcO3], [(O3TcO)SntBu2(OH)]2, and [(THF)4Mg(OTcO3)2] are more stable and were isolated in crystalline form and characterized by X-ray diffraction.
Y1  - 2010
U6  - https://doi.org/10.1021/ic1001094
SN  - 1520-510X
VL  - 49
IS  - 7
SP  - 3525
EP  - 3530
PB  - American Chemical Society
CY  - Washington
ER  - 
TY  - JOUR
A1  - Paulßen, Elisabeth
A1  - Kong, Shushu
A1  - Arciszewski, Pawel
A1  - Wielbalck, Swantje
A1  - Abram, Ulrich
T1  - Aryl and NHC Compounds of Technetium and Rhenium
JF  - Journal of the American Chemical Society
N2  - Air- and water-stable phenyl complexes with nitridotechnetium(V) cores can be prepared by straightforward procedures. [TcNPh2(PPh3)2] is formed by the reaction of [TcNCl2(PPh3)2] with PhLi. The analogous N-heterocyclic carbene (NHC) compound [TcNPh2(HLPh)2], where HLPh is 1,3,4-triphenyl-1,2,4-triazol-5-ylidene, is available from (NBu4)[TcNCl4] and HLPh or its methoxo-protected form. The latter compound allows the comparison of different Tc–C bonds within one compound. Surprisingly, the Tc chemistry with such NHCs does not resemble that of corresponding Re complexes, where CH activation and orthometalation dominate.
Y1  - 2012
U6  - https://doi.org/10.1021/ja3033718
SN  - 1520-5126
VL  - 134
IS  - 22
SP  - 9118
EP  - 9121
PB  - ACS Publications
CY  - Washington, DC
ER  - 
TY  - JOUR
A1  - Barbazán, Paula
A1  - Hagenbach, Adelheid
A1  - Paulßen, Elisabeth
A1  - Abram, Ulrich
A1  - Carballo, Rosa
A1  - Rodriguez-Hermida, Sabina
A1  - Vázquez-López, Ezequiel M.
T1  - Tricarbonyl Rhenium(I) and Technetium(I) Complexes with Hydrazones Derived from 4,5-Diazafluoren-9-one and 1,10-Phenanthroline-5,6-dione
JF  - European Journal of Inorganic Chemistry
N2  - Tricarbonylrhenium(I) and -technetium(I) halide (halide = Cl and Br) complexes of ligands derived from 4,5-diazafluoren-9-one (df) and 1,10-phenanthroline-5,6-dione (phen) derivatives of benzoic and 2-hydroxybenzoic acid hydrazides have been prepared. The complexes have been characterized by elemental analysis, MS, IR, 1H NMR and absorption and emission UV/Vis spectroscopic methods. The metal centres (ReI and TcI) are coordinated through the nitrogen imine atoms and establish five-membered chelate rings, whereas the hydrazone groups stand uncoordinated. The 1H NMR spectra suggest the same behaviour in solution on the basis of only marginal variations in the chemical shifts of the hydrazine protons.
Y1  - 2010
U6  - https://doi.org/10.1002/ejic.201000522
SN  - 1099-0682
IS  - 29
SP  - 4622
EP  - 4630
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Paulßen, Elisabeth
A1  - Ngyugen, Hung Huy
A1  - Kahlcke, Nils
A1  - Deflon, Victor M.
A1  - Abram, Ulrich
T1  - Tricarbonyltechnetium(I) and -rhenium(I) complexes with N′-thiocarbamoylpicolylbenzamidines
JF  - Polyhedron
N2  - N,N-Dialkylamino(thiocarbonyl)-N′-picolylbenzamidines react with (NEt4)2[M(CO)3X3] (M = Re, X = Br; M = Tc, X = Cl) under formation of neutral [M(CO)3L] complexes in high yields. The monoanionic NNS ligands bind in a facial coordination mode and can readily be modified at the (CS)NR1R2 moiety. The complexes [99Tc(CO)3(LPyMor)] and [Re(CO)3(L)] (L = LPyMor, LPyEt) were characterized by X-ray diffraction. Reactions of [99mTc(CO)3(H2O)3]+ with the N′-thiocarbamoylpicolylbenzamidines give the corresponding 99mTc complexes. The ester group in HLPyCOOEt allows linkage between biomolecules and the metal core.
Y1  - 2012
U6  - https://doi.org/10.1016/j.poly.2012.04.008
SN  - 0277-5387
VL  - 40
IS  - 1
SP  - 153
EP  - 158
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Pellegrini, Paul A.
A1  - Howell, Nicholas R.
A1  - Shepherd, Rachael K.
A1  - Lengkeek, Nigel A.
A1  - Paulßen, Elisabeth
A1  - Katsifis, Andrew G.
A1  - Greguric, Ivan
T1  - Synthesis and Radiolabelling of DOTA-Linked Glutamine Analogues with 67,68Ga as Markers for Increased Glutamine Metabolism in Tumour Cells
JF  - Molecules
Y1  - 2013
U6  - https://doi.org/10.3390/molecules18067160
SN  - 1420-3049
VL  - 18
IS  - 6
SP  - 7160
EP  - 7178
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Paulßen, Elisabeth
A1  - Le, Van So
A1  - Lengkeek, Nigel
A1  - Pellegrini, Paul
A1  - Jackson, Tim
A1  - Greguric, Ivan
A1  - Weiner, Ron
T1  - Influence of Metal Ions on the 68Ga-labeling of DOTATATE
JF  - Applied Radiation and Isotopes
Y1  - 2013
U6  - https://doi.org/10.1016/j.apradiso.2013.08.010
SN  - 1872-9800
VL  - 82
SP  - 232
EP  - 238
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Paulßen, Elisabeth
A1  - Lengkeek, Nigel A.
A1  - Le, Van So
A1  - Pellegrini, Paul A.
A1  - Greguric, Ivan
A1  - Weiner, Ron
T1  - The role of additives in moderating the influence of Fe(III) and Cu(II) on the radiochemical yield of [⁶⁸Ga(DOTATATE)]
JF  - Applied Radiation and Isotopes
N2  - [⁶⁸Ga(DOTATATE)] has demonstrated its clinical usefulness. Both Fe³⁺ and Cu²⁺, potential contaminants in Gallium-68 generator eluent, substantially reduce the radiochemical (RC) yield of [⁶⁸Ga(DOTATATE)] if the metal/ligand ratio of 1:1 is exceeded. A variety of compounds were examined for their potential ability to reduce this effect. Most had no effect on RC yield. However, addition of phosphate diminished the influence of Fe³⁺ by likely forming an insoluble iron salt. Addition of ascorbic acid reduced Cu²⁺ and Fe³⁺ to Cu⁺ and Fe²⁺ respectively, both of which have limited impact on RC yields. At low ligand amounts (5 nmol DOTATATE), the addition of 30 nmol phosphate (0.19 mM) increased the tolerance of Fe3⁺ from 4 nmol to 10 nmol (0.06 mM), while the addition of ascorbic acid allowed high RC yields (>95%) in the presence of 40 nmol Fe³⁺ (0.25 mM) and 100 nmol Cu²⁺ (0.63 mM). The effect of ascorbic acid was highly pH-dependant, and gave optimal results at pH 3.
Y1  - 2016
U6  - https://doi.org/10.1016/j.apradiso.2015.09.008
SN  - 1872-9800
VL  - 107
SP  - 13
EP  - 16
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Paulßen, Elisabeth
A1  - Hoehr, Cornelia
A1  - Hou, Xinchi
A1  - Hanemaayer, Victoire
A1  - Zeisler, Stefan
A1  - Adam, Michael J.
A1  - Ruth, Thomas J.
A1  - Celler, Anna
A1  - Buckley, Ken
A1  - Benard, Francois
A1  - Schaffer, Paul
T1  - Production of Y-86 and other radiometals for research purposes using a solution target system
JF  - Nuclear medicine and biology
Y1  - 2015
U6  - https://doi.org/10.1016/j.nucmedbio.2015.06.005
SN  - 1872-9614
VL  - 42
IS  - 11
SP  - 842
EP  - 849
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Hoehr, Cornelia
A1  - Paulßen, Elisabeth
A1  - Benard, Francois
A1  - Lee, Chris Jaeil
A1  - Hou, Xinchi
A1  - Badesso, Brian
A1  - Ferguson, Simon
A1  - Miao, Qing
A1  - Yang, Hua
A1  - Buckley, Ken
A1  - Hanemaayer, Victoire
A1  - Zeisler, Stefan
A1  - Ruth, Thomas
A1  - Celler, Anna
A1  - Schaffer, Paul
T1  - ⁴⁴ᶢSc production using a water target on a 13 MeV cyclotron
JF  - Nuclear medicine and biology
N2  - Access to promising radiometals as isotopes for novel molecular imaging agents requires that they are routinely available and inexpensive to obtain. Proximity to a cyclotron center outfitted with solid target hardware, or to an isotope generator for the metal of interest is necessary, both of which can introduce significant hurdles in development of less common isotopes. Herein, we describe the production of ⁴⁴Sc (t₁⸝₂ = 3.97 h, Eavg,β⁺ = 1.47 MeV, branching ratio = 94.27%) in a solution target and an automated loading system which allows a quick turn-around between different radiometallic isotopes and therefore greatly improves their availability for tracer development. Experimental yields are compared to theoretical calculations.
Y1  - 2014
U6  - https://doi.org/10.1016/j.nucmedbio.2013.12.016
SN  - 1872-9614
VL  - 41
IS  - 5
SP  - 401
EP  - 406
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Infantino, Angelo
A1  - Paulßen, Elisabeth
A1  - Mostacci, Domiziano
A1  - Schaffer, Paul
A1  - Trinczek, Michael
A1  - Hoehr, Cornelia
T1  - Assessment of the production of medical isotopes using the Monte Carlo code FLUKA: Simulations against experimental measurements
JF  - Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
N2  - The Monte Carlo code FLUKA is used to simulate the production of a number of positron emitting radionuclides, ¹⁸F, ¹³N, ⁹⁴Tc, ⁴⁴Sc, ⁶⁸Ga, ⁸⁶Y, ⁸⁹Zr, ⁵²Mn, ⁶¹Cu and ⁵⁵Co, on a small medical cyclotron with a proton beam energy of 13 MeV. Experimental data collected at the TR13 cyclotron at TRIUMF agree within a factor of 0.6 ± 0.4 with the directly simulated data, except for the production of ⁵⁵Co, where the simulation underestimates the experiment by a factor of 3.4 ± 0.4. The experimental data also agree within a factor of 0.8 ± 0.6 with the convolution of simulated proton fluence and cross sections from literature. Overall, this confirms the applicability of FLUKA to simulate radionuclide production at 13 MeV proton beam energy.
Y1  - 2016
U6  - https://doi.org/10.1016/j.nimb.2015.10.067
SN  - 1872-9584
VL  - 366
SP  - 117
EP  - 123
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Liu, Z.
A1  - Schaap, K. S.
A1  - Ballemans, L.
A1  - de Blois, E.
A1  - Rohde, M.
A1  - Paulßen, Elisabeth
T1  - Measurement of reaction kinetics of [177Lu]Lu-DOTA-TATE using a microfluidic system
JF  - Dalton Transactions
Y1  - 2017
U6  - https://doi.org/10.1039/C7DT01830D
SN  - 1477-9234
VL  - 46
IS  - 42
SP  - 14669
EP  - 14676
ER  - 
TY  - JOUR
A1  - Wilke, Thomas
T1  - Gebaute Geschichte in Turin
JF  - Kunsttexte.de
N2  - Städte sind Stein gewordene Geschichte. Ihre realisierte Form ermöglicht Geschichte zu erleben und die Stadtentwicklung nachzuvollziehen. Besonders in Turin ist ablesbar, wie das Haus Savoyen den Ausbau der neuen Hauptstadt zu einer der führenden Barockmetropolen Europas beeinflusste.
Y1  - 2014
U6  - https://doi.org/10.18452/7197
SN  - 1618-8101
VL  - 2014
IS  - 1
PB  - Humboldt-Universität zu Berlin
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Barnat, Miriam
A1  - Faria, Joana Abelha
A1  - Bosse, Elke
T1  - Heterogenität und Studierfähigkeit: Erste Ergebnisse einer Längsschnittbefragung
JF  - Qualität in der Wissenschaft: QiW ; Zeitschrift für Qualitätsentwicklung in Forschung, Studium und Administration
Y1  - 2017
SN  - 1860-3041
N1  - gedruckt in der Bereichsbibliothek Eupener Str. vorhanden
VL  - 11
IS  - 1
SP  - 17
EP  - 24
PB  - UVW Universitäts-Verlag Webler
CY  - Bielefeld
ER  - 
TY  - JOUR
A1  - Barnat, Miriam
A1  - Bosse, Elke
A1  - Mergner, Julia
T1  - Forschungsbasierte Qualitätsentwicklung für die Studieneingangsphase
JF  - Zeitschrift für Hochschulentwicklung (ZFHE)
Y1  - 2017
U6  - https://doi.org/10.3217/zfhe-12-03/05
SN  - 2219-6994
VL  - 12
IS  - 3
SP  - 71
EP  - 91
ER  - 
TY  - JOUR
A1  - Funke, Harald
A1  - Keinz, Jan
A1  - Kusterer, K.
A1  - Haj Ayed, A.
A1  - Kazari, M.
A1  - Kitajima, J.
A1  - Horikawa, A.
A1  - Okada, K.
T1  - Development and Testing of a Low NOX Micromix Combustion Chamber for an Industrial Gas Turbine
JF  - International Journal of Gas Turbine, Propulsion and Power Systems
N2  - The Micromix combustion principle, based on cross-flow mixing of air and hydrogen, promises low emission applications in future gas turbines. The Micromix combustion takes place in several hundreds of miniaturized diffusion-type micro-flames. The major advantage is the inherent safety against flash-back and low NOx-emissions due to a very short residence time of reactants in the flame region. The paper gives insight into the Micromix design and scaling procedure for different energy densities and the interaction of scaling laws and key design drivers in gas turbine integration. Numerical studies, experimental testing, gas turbine integration and interface considerations are evaluated. The aerodynamic stabilization of the miniaturized flamelets and the resulting flow field, flame structure and NOx formation are analysed experimentally and numerically. The results show and confirm the successful adaption of the low NOx Micromix characteristics for a range of different nozzle sizes, energy densities and thermal power output.
Y1  - 2017
U6  - https://doi.org/10.38036/jgpp.9.1_27
SN  - 1882-5079
VL  - 9
IS  - 1
SP  - 27
EP  - 36
ER  -