TY  - CHAP
A1  - Pieper, Martin
T1  - Lernzielorientierte Kurse und Stack Aufgaben in der Mathematikausbildung
T2  - Beiträge zum Mathematikunterricht 2018 : Vorträge zur Mathematikdidaktik und zur Schnittstelle Mathematik/Mathematikdidaktik auf der gemeinsamen Jahrestagung GDM und DMV 2018 (52. Jahrestagung der Gesellschaft für Didaktik der Mathematik). Bd. 3
Y1  - 2018
SN  - 978-3-95987-089-4
SP  - 1399
EP  - 1402
PB  - WTM-Verlag
CY  - Münster
ER  - 
TY  - JOUR
A1  - Hoyler, Friedrich
A1  - Balodis, M.
A1  - Prokofjevs, P.
T1  - Level scheme of 194Ir / M. Balodis ; P. Prokofjevs ... F. Hoyler ...
JF  - Nuclear physics <Amsterdam> / A. 641 (1998), H. 2
Y1  - 1998
SN  - 0375-9474
SP  - 133
EP  - 187
ER  - 
TY  - CHAP
A1  - Evers, Jörg
A1  - Fleischhaker, Robert
A1  - Pálffy, A.
A1  - Keitel, C.
T1  - Light propagation : From atomic to nuclear quantum optics
T2  - Modern optics and photonics: atoms and structured media
Y1  - 2010
SN  - 978-981431327-8
U6  - http://dx.doi.org/10.1142/9789814313278_0001
SP  - 3
EP  - 15
PB  - World Scientific Publishing Co.
ER  - 
TY  - THES
A1  - Fleischhaker, Robert
T1  - Light propagation in dense and chiral media
Y1  - 2009
N1  - Heidelberg, Univ., Diss., 2009
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Heidler, Fridolin
A1  - Zischank, Wolfgang J.
A1  - Frentzel, Ralf
T1  - Lightning current distribution and coupling to control cables in power plants or large industrial facilites
Y1  - 2002
N1  - International Conference on Grounding and Earthing <2002, Rio de Janeiro>
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Krichel, Frank
A1  - Neskakis, Apostolos
A1  - Müller, Klaus-Peter (u.a.)
T1  - Lightning protection design of a renewable energy hybrid-system without power mains connection
Y1  - 2001
N1  - International Conference on Renewable Energies for Islands <2001, Crete>
ER  - 
TY  - CHAP
A1  - Kern, Alexander
A1  - Krichel, Frank
A1  - Müller, Klaus-Peter
T1  - Lightning protection design of a renewable energy hybrid-system without power mains connection
N2  - In the year 2000 a direct lightning strike to the hybridsystem without power mains connection VATALI on the Greek island Crete results in the destruction and damage of some mechanical and electrical components. The hybrid-system VATALI was not lightning protected at that time. The hardware damage costs are approx. 60,000 €. The exposed site of the hybrid-system on top of a mountain was and still is the reason for a high risk of lightning strikes. Also in the future further lightning strikes have to be taken into consideration. In the paper a fundamental lightning protection design concept for renewable energy hybrid-systems without power mains connection and protection measures against direct strikes and overvoltages are shown in detail. The design concept was realized exemplarily for the hybrid-system VATALI. The hardware costs for the protection measures were about 15,000 €. About 50% of the costs are due to protection measures against direct strikes, 50% are due to overvoltage protection. Future extensions, new installations, or modifications have to be included into the lightning protection design concept of the hybrid-system.
KW  - Blitzschutz
KW  - Erneuerbare Energien
KW  - Hybridsystem
KW  - Lightning protection
KW  - Renewable energy
KW  - hybrid-system
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Bouquegneau, Christian
A1  - Kern, Alexander
A1  - Rousseau, Alain
T1  - Lightning safety guidelines
Y1  - 2010
N1  - Ground´2010 International Conference on Grounding and Earthing ; 4th International Conference ond Lightning Physics and Effects, Nov. 2010 Salvador - Brazil
SP  - 1
EP  - 6
ER  - 
TY  - RPRT
A1  - Ghinaiya, Jagdishkumar
A1  - Lehmann, Thomas
A1  - Göttsche, Joachim
T1  - LOCAL+ – ein kreislauffähiger Holzmodulbau mit nachhaltigem Energie- und Wohnraumkonzept
T2  - Bauphysik
N2  - Mit dem Beitrag des Teams der FH Aachen zum SDE 21/22 wird im Projekt LOCAL+ ein kreislauffähiger Holzmodulbau mit einem innovativen Wohnraumkonzept geplant und umgesetzt. Ziel dieses Konzeptes ist die Verringerung des stetig steigenden Wohnflächenbedarfs durch ein Raum-in-Raum Konzept. Gebäudetechnisch wird in dem Projekt nicht nur das Einzelgebäude betrachtet, sondern unter Berücksichtigung des Gebäudebestandes wird für das Quartier ein innovatives und nachhaltiges Energiekonzept entwickelt. Ein zentrales Wasserstoffsystem ist für ein Quartier geplant, um den Stromverbrauch aus dem Netz im Winter zu reduzieren. Zentraler Bestandteil des TGA-Konzepts ist ein unterirdischer Eisspeicher, eine PVT und eine Wärmepumpe mit intelligenter Regelstrategie. Ein Teil des neuen Gebäudes (Design Challenge DC) wird in Wuppertal als Hausdemonstrationseinheit (HDU) präsentiert. Eine hygrothermische Simulation der HDU wurde mit der WUFI-Software durchgeführt. Da im Innenraum Lehmmodule und -platten als Feuchtigkeitspuffer verwendet werden, spielen die Themen Feuchtigkeit, Holzfäule und Schimmelwachstum eine wichtige Rolle.
KW  - Energiekonzept
KW  - Gesamtwassergehalt
KW  - Feuchtigkeit
KW  - Verdunstungskälte
KW  - energy concept
Y1  - 2022
U6  - http://dx.doi.org/10.1002/bapi.202200010
SN  - 0171-5445 (Print)
SN  - 1437-0980 (Online)
VL  - 44
IS  - 3
SP  - 136
EP  - 142
PB  - Ernst & Sohn
CY  - Hoboken
ER  - 
TY  - CHAP
A1  - Böhm, Stefan
A1  - Hellmanns, Mark
A1  - Backes, Andreas
A1  - Dilger, Klaus
T1  - Lock-in thermography based NDT of automotive parts
T2  - Proceedings of the 3rd World Congress on Adhesion and Related Phenomena : WCARP-III, October 15 -18, 2006, Beijing, China
Y1  - 2006
SP  - 382
EP  - 384
PB  - Beijing Adhesion Society of China
CY  - Beijing
ER  - 
TY  - JOUR
A1  - Böhm, Stefan
A1  - Hellmanns, Mark
A1  - Backes, Andreas
A1  - Dilger, Klaus
T1  - Lock-in thermography based NDT of parts for the automotive industry
JF  - Journal of adhesion and interface
Y1  - 2006
VL  - Vol. 7
IS  - No. 4
SP  - 10
EP  - 12
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Janssen, G.
A1  - Roer, T. G. van de
T1  - Logic Circuits with reduced complexity based on devices with higher functionality / G. Janssen ; T. G. van de Roer ; W. Prost ... A. Förster
JF  - Proceedings / STW/SAFE 2nd Annual Workshop on Semiconductor Advances for Future Electronics, Safe '99 - ProRISC/IEEE 10th Annual Workshop on Circuits, Systems and Signal Processing, ProRISC 99 : November 24 - 26, 1999, Mierlo, The Netherlands [Elektronische Ressource]
Y1  - 1999
N1  - SAFE <2, 1999, Mierlo> ; Workshop on Circuits, Systems and Signal Processing <10, 1999, Mierlo> ; Stichting voor de Technische Wetenschappen
SP  - 219
PB  - Technology Foundation, STW
CY  - Utrecht
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Mikulics, M.
A1  - Marso, M.
A1  - Adam, R.
T1  - Low-temperature-grown MBE GaAs for terahertz photomixers. Mikulics, M.; Marso, M.; Adam, R.; Fox, A.; Buca, D.; Förster, A.; Kordos, P.; Xu, Y.; Sobolewski, R.
JF  - 2001 Symposium on Electron Devices for Microwave and Optoelectronic Applications ; [Vienna University of Technology, Institute of Electrical Measurements and Circuit Design, 15 - 16 November 2001, Vienna, Austria ; proceedings] / EDMO 2001. Organised by: Institute of Electrical Measurements and Circuit Design, Vienna University of Technology, Austria. With technical co-sponsorship from IEEE Electron Devices Society
Y1  - 2001
SN  - 078037049X
N1  - IEEE catalog number: 01TH8567
SP  - 155
EP  - 155
PB  - IEEE Operations Center
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Zischank, Wolfgang J.
T1  - Längsspannung an blitzstromdurchflossenen Schirmkabeln - Einfluß paralleler Entlastungsleitungen
JF  - Elektrie : wissenschaftlich-technische Zeitschrift der Elektrotechnik. 47 (1993), H. 6
Y1  - 1993
SN  - 0013-5399
N1  - 2. ISSN: 0013-5400
ER  - 
TY  - CHAP
A1  - Giresini, Linda
A1  - Butenweg, Christoph
A1  - Andreini, M.
A1  - De Falco, A.
A1  - Sassu, M.
T1  - Macro-elements identification in historic chapels: the case of St. Venerio Chapel in Reggiolo - Emilia Romagna
T2  - 9th International Conference on Structural Analyses of Historical Conctruction, 14 - 17 October, 2014, Mexico City
Y1  - 2014
SP  - 1
EP  - 12
ER  - 
TY  - CHAP
A1  - Kern, Alexander
A1  - Heidler, Fridolin
A1  - Seevers, M.
A1  - Zischank, Wolfgang J.
T1  - Magnetic Fields and Induced Voltages in case of a Direct Strike - Comparison of Results obtained from Measurements at a Scaled Building to those of IEC 62305-4
N2  - In the paper the results obtained from experiments at a modelled reinforced building in case of a direct lightning strike are compared with calculations. The comparison includes peak values of the magnetic field Hmax, its derivative (dH/dt)max and of induced voltages umax in typical cable routings. The experiments are performed at a 1:6 scaled building and the results are extrapolated using the similarity relations theory. The calculations are based on the approximate formulae given in IEC 62305-4 and have to be supplemented by a rough estimation of the additional shielding effect of a second reinforcement layer. The comparison shows, that the measured peak values of the magnetic field and its derivative are mostly lower than the calculated. The induced voltages are in good agreement. Hence, calculations of the induced voltages based on IEC 62305-4 are a good method for lightning protection studies of buildings, where the reinforcement is used as a grid-like electromagnetic shield.
N2  - Auswirkungen eines direkten Blitzeinschlages auf ein Gebäude, Vergleich von experimentellen Ergebnissen und Berechnungen basierend auf einer Formel aus der IEC 62305-4
KW  - Blitz
KW  - Direkter Blitzschlag
KW  - Elektromagnetischer Schutzschild
KW  - Magnetische Felder
KW  - Induzierte Spannungen
KW  - Kalkulation
KW  - Direct lightning strike
KW  - electromagnetic shield
KW  - magnetic fields
KW  - induced voltages
KW  - calculations
Y1  - 2004
SN  - 0304-3886
N1  - Journal of electrostatics: Beitr. auf S. 379 - 385. doi:10.1016/j.elstat.2006.09.004
ER  - 
TY  - CHAP
A1  - Zischank, Wolfgang J.
A1  - Heidler, Fridolin
A1  - Wiesinger, J.
A1  - Stimper, K.
A1  - Kern, Alexander
A1  - Seevers, M.
T1  - Magnetic Fields and Induced Voltages inside LPZ 1 Measured at a 1:6 Scale Model Building
N2  - Laborexperimente zu Blitzschutzzonen in Stahlbetongebäuden anhand eines Modells im Maßstab 1:6
N2  - For the application of the concept of Lightning Protection Zones (LPZ), the knowledge of the magnetic fields and induced voltages inside a structure is necessary. Laboratory experiments have been conducted at a downscaled model of a building (scale factor 1:6) to determine these electromagnetic quantities in case of a direct strike to the structure. The model (3 m x 2 m x 2 m) represented a small industrial building using the reinforcement of the concrete as electromagnetic shield. The magnetic fields and magnetic field derivatives were measured at several location inside the scaled model. Further, the voltages induced on three typical cable routes inside the model was determined. The influence of the lightning current waveshape, point-of-strike, bonding of the cable routes, and bridging of an expansion joint in the middle of the building on these quantities was studied.
KW  - Blitzschlag
KW  - Elektromagnetischer Schutzschild
KW  - Stahlbeton
KW  - Maßstabsgetreues Modell
KW  - Lightning
KW  - electromagnetic shielding
KW  - reinforced concrete
KW  - scaled model
Y1  - 2004
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Betko, J.
A1  - Morvic, M.
A1  - Novak, J.
T1  - Magnetoresistance in low-temperature grown molecular-beam epitaxial GaAs. Betko, J.; Morvic, M.; Novak, J.; Förster, A.; Kordos, P.
JF  - Journal of Applied Physics. 86 (1999), H. 11
Y1  - 1999
SN  - 1089-7550
SP  - 6243
EP  - 6248
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  - RPRT
A1  - Dielmann, Klaus-Peter
A1  - Ertl, Karl-Heinz
T1  - MAK-Energie: Reinigung und energetische Verwertung von Klärgas durch den Einsatz einer Mikrogasturbine gekoppelt mit einer Adsorptionskältemaschine : Abschlussbericht
Y1  - 2013
PB  - Institut NOWUM-Energy
CY  - Jülich
ER  -