TY  - JOUR
A1  - Martin, S. A.
A1  - Berg, G. P. A.
A1  - Hacker, U.
A1  - Hardt, Arno
A1  - Köhler, M.
A1  - Meißburger, J.
A1  - Osterfeld, F.
A1  - Prasuhn, D.
A1  - Riepe, G.
A1  - Rogge, M.
A1  - Schult, O. W. B.
A1  - Speth, J.
A1  - Turek, P.
A1  - Gaul, G.
A1  - Hagedoorn, H.
A1  - Heide, J. A. van der
A1  - Hinterberger, F.
A1  - Huber, M.
A1  - Jahn, R.
A1  - Mayer-Kuckuk, T.
A1  - Poth, H.
A1  - Paetz gen. Schieck, H.
T1  - COSY - a cooler synchrotron and storage ring
JF  - IEEE transactions on nuclear science. Vol. 32, iss. 5
Y1  - 1985
SN  - 1558-1578 (E-Journal); 0018-9499 (Print)
SP  - 2694
EP  - 2696
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Schäpers, T.
A1  - Müller, F.
T1  - Control of ballistic electrons in (AlGa)As/GaAs heterostructures by means of superconducting niobium gate structures / T. Schäpers ; F. Müller ; A. Förster ...
JF  - Surface Science. 305 (1994), H. 1-3
Y1  - 1994
SN  - 0039-6028
N1  - ISSN der E-Ausg.: 0039-6028
SP  - 460
EP  - 464
ER  - 
TY  - JOUR
A1  - Krafft, B.
A1  - Förster, Arnold
A1  - Hart, A. van der
A1  - Schäpers, T.
T1  - Control of Aharonov-Bohm oscillations in a AlGaAs/GaAs ring by asymmetric and symmetric gate biasing
JF  - Physica E: Low-dimensional Systems and Nanostructures. 9 (2001), H. 4
Y1  - 2001
SN  - 1386-9477
SP  - 635
EP  - 641
ER  - 
TY  - JOUR
A1  - Rupp, Matthias
A1  - Handschuh, Nils
A1  - Rieke, Christian
A1  - Kuperjans, Isabel
T1  - Contribution of country-specific electricity mix and charging time to environmental impact of battery electric vehicles: A case study of electric buses in Germany
JF  - Applied Energy
Y1  - 2019
U6  - http://dx.doi.org/10.1016/j.apenergy.2019.01.059
SN  - 0306-2619
VL  - 237
SP  - 618
EP  - 634
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Fleischhaker, Robert
A1  - Krauß, Nico
A1  - Schättiger, Farina
A1  - Dekorsy, Thomas
T1  - Consistent characterization of semiconductor saturable absorber mirrors with singe-pulse and pump-probe spectroscopy
JF  - Optics Express
Y1  - 2013
U6  - http://dx.doi.org/10.1364/OE.21.006764
SN  - 1094-4087
VL  - 21
IS  - 6
SP  - 6764
EP  - 6776
PB  - Optica
CY  - Washington, DC
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Krichel, Frank
T1  - Considerations about the lightning protection system of mains independent renewable energy hybrid-systems - practical experiences
JF  - Journal of electrostatics. 60 (2004), H. 2-4
Y1  - 2004
SN  - 0304-3886
N1  - ISSN der E-Ausg.: 0304-3886
SP  - 257
EP  - 263
ER  - 
TY  - JOUR
A1  - Brüssermann, Klaus
A1  - Ashton, P.
A1  - Leicht, R.
A1  - Martens, B.-R.
T1  - Concept of the Konrad repository documentation system for radioactive wastes (DORA) / Ashton, P.; Leicht, R.; Martens, B.-R.; Giller, H. Brüssermann, K.
JF  - Kerntechnik 94 : Jahrestagung, 17.-19. Mai 1994, Stuttgart: Tagungsbericht = Nuclear technology, annual meeting 94 / Veranst.: Kerntechnische Gesellschaft; Deutsches Atomforum
Y1  - 1994
SP  - 294
EP  - 297
PB  - INFORUM Verl.- u. Verwaltungs-Ges.
CY  - Bonn
ER  - 
TY  - JOUR
A1  - Holler, S.
A1  - Butenweg, Christoph
A1  - Noh, S.-Y.
A1  - Meskouris, Konstantin
T1  - Computational model of textile-reinforced concrete structures
JF  - Computers & structures : an international journal
Y1  - 2004
U6  - http://dx.doi.org/10.1016/j.compstruc.2004.03.076
SN  - 1879-2243 (E-Journal); 0045-7949 (Print)
VL  - Volume 82
IS  - Issues 23-26
SP  - 1971
EP  - 1979
ER  - 
TY  - JOUR
A1  - Alexopoulos, Spiros
A1  - Breitbach, Gerd
A1  - Hoffschmidt, Bernhard
A1  - Stobbe, P.
T1  - Computational fluid flow of porous resic ceramic filtering modules and optimization of the channel edge form geometry
JF  - Proceedings : April 14 - 18, 2008, Leipzig, Germany / hosted by VDI, Society for Chemical and Process Engineering . Vol 2
Y1  - 2008
N1  - Verein Deutscher Ingenieure ; World Filtration Congress ; (10 : ; 2008.04.14-18 : ; Leipzig) ; WFC ; (10 : ; 2008.04.14-18 : ; Leipzig)
SP  - 300
EP  - 304
PB  - Filtech Exhibitions
CY  - Meerbusch
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Rosenauer, A.
A1  - Fischer, U.
A1  - Gerthsen, D.
T1  - Composition evaluation of InxGa1 – xAs Stranski-Krastanow-island structures by strain state analysis / A. Rosenauer ; U. Fischer ; D. Gerthsen ; A. Förster
JF  - Applied physics letters. 71 (1997), H. 26
Y1  - 1997
SN  - 0003-6951
N1  - ISSN der E-Ausg.: 1077-3118
SP  - 3868
EP  - 3870
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Rosenauer, A.
A1  - Fischer, U.
A1  - Gerthsen, D.
T1  - Composition evaluation by lattice fringe analysis. Rosenauer, A.; Fischer U.;  Gerthsen D.;  Förster A.
JF  - Ultramicroscopy. 72 (1998), H. 3-4
Y1  - 1998
SN  - 0304-3991
SP  - 121
EP  - 133
ER  - 
TY  - JOUR
A1  - Hoyler, Friedrich
A1  - Aprahamian, A.
A1  - Wu, X.
A1  - Lesher, S. R.
T1  - Complete spectroscopy of the 162Dy nucleus / Aprahamian, A. ; Wu, X. ; Lesher, S. R. ; Warner, D. D. ; Gelletly, W. ; Börner, H. G. ; Hoyler, F. ; Schreckenbach, K. ; Carsten R. F. ; Shi, Z. R. ; Kusnezov, D. ; Ibrahim, M. ; Macchiavelli, A. O. ; Brinkman
JF  - Nuclear physics <Amsterdam> / A. 764 (2006)
Y1  - 2006
SN  - 0375-9474
SP  - 42
EP  - 78
ER  - 
TY  - JOUR
A1  - Hoyler, Friedrich
A1  - Shi, Z. R.
A1  - Schreckenback, K.
A1  - Aprahamian, A.
T1  - Complete spectroscopy and the 162Dy nucleus / Z. R. Shi ; K. Schreckenbach ; A. Aprahamian ... F. Hoyler ...
JF  - AIP conference proceedings (1999)
Y1  - 1999
SN  - 0094-243X
N1  - American Institute of Physics conference proceedings
SP  - 237
EP  - 238
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Roth, J.
A1  - Wiedmann, J.
T1  - Comparison of the damage for various types of fibre reinforced composites due to different lightning test standards (MIL-STD 1757 A, German military VG-standard 96903)
JF  - Proceedings of the 1992 International Aerospace and Ground Conference on Lightning and Static Electricity : October 6-8, 1992, Trump Taj Mahal, Atlantic City, NJ.
Y1  - 1992
N1  - International Conference on Lightning and Static Electricity <1992, Atlantic City, NJ>
PB  - U.S. Dept. of Transportation, Federal Aviation Administration
CY  - [Atlantic City, N.J.]
ER  - 
TY  - JOUR
A1  - Späte, Frank
A1  - Faber, Christian
A1  - Schwarzer, Klemens
A1  - Hartz, Thomas
T1  - Comparison of solar hot water systems in solar settlements - decentralized or centralized systems?
JF  - Proceedings / organised by: ISES Europe ... [Ed.: Deutsche Gesellschaft für Sonnenenergie e.V. - DGS, Munich ; PSE GmbH - Forschung Entwicklung Marketing, Freiburg]. - Vol. 1
Y1  - 2004
SN  - 3-9809656-1-9
N1  - EuroSun <5, 2004, Freiburg, Breisgau> ; Internationales Sonnenforum <14, 2004, Freiburg, Breisgau> ; Deutsche Gesellschaft für Sonnenenergie
SP  - 1-666-1-671
PB  - PSE
CY  - Freiburg [Breisgau]
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Thomsen, M.
T1  - Comparison of single point and equipotential bonding for I&C systems of large-area industrial sites
JF  - Volume of proceedings : Budapest, Hungary, September 19-23, 1994 / organized by: Technical University of Budapest
Y1  - 1994
N1  - International Conference on Lightning Protection <22, 1994, Budapest> ; ICLP <22, 1994, Budapest> ; Budapesti M&#369;szaki Egyetem
PB  - Techn. Univ.
CY  - Budapest
ER  - 
TY  - JOUR
A1  - Becker, Meike
A1  - Frauenrath, Tobias
A1  - Hezel, Fabian
A1  - Krombach, Gabriele A.
A1  - Kremer, Ute
A1  - Koppers, Benedikt
A1  - Butenweg, Christoph
A1  - Goemmel, Andreas
A1  - Utting, Jane F.
A1  - Schulz-Menger, Jeanette
A1  - Niendorf, Thoralf
T1  - Comparison of left ventricular function assessment using phonocardiogram- and electrocardiogram-triggered 2D SSFP CINE MR imaging at 1.5 T and 3.0 T
JF  - European Radiology
N2  - Objective: As high-field cardiac MRI (CMR) becomes more widespread the propensity of ECG to interference from electromagnetic fields (EMF) and to magneto-hydrodynamic (MHD) effects increases and with it the motivation for a CMR triggering alternative. This study explores the suitability of acoustic cardiac triggering (ACT) for left ventricular (LV) function assessment in healthy subjects (n=14). Methods: Quantitative analysis of 2D CINE steady-state free precession (SSFP) images was conducted to compare ACT’s performance with vector ECG (VCG). Endocardial border sharpness (EBS) was examined paralleled by quantitative LV function assessment. Results: Unlike VCG, ACT provided signal traces free of interference from EMF or MHD effects. In the case of correct Rwave recognition, VCG-triggered 2D CINE SSFP was immune to cardiac motion effects—even at 3.0 T. However, VCG-triggered 2D SSFP CINE imaging was prone to cardiac motion and EBS degradation if R-wave misregistration occurred. ACT-triggered acquisitions yielded LV parameters (end-diastolic volume (EDV), endsystolic volume (ESV), stroke volume (SV), ejection fraction (EF) and left ventricular mass (LVM)) comparable with those derived fromVCG-triggered acquisitions (1.5 T: ESVVCG=(56± 17) ml, EDVVCG=(151±32)ml, LVMVCG=(97±27) g, SVVCG=(94± 19)ml, EFVCG=(63±5)% cf. ESVACT= (56±18) ml, EDVACT=(147±36) ml, LVMACT=(102±29) g, SVACT=(91± 22) ml, EFACT=(62±6)%; 3.0 T: ESVVCG=(55±21) ml, EDVVCG=(151±32) ml, LVMVCG=(101±27) g, SVVCG=(96±15) ml, EFVCG=(65±7)% cf. ESVACT=(54±20) ml, EDVACT=(146±35) ml, LVMACT= (101±30) g, SVACT=(92±17) ml, EFACT=(64±6)%). Conclusions: ACT’s intrinsic insensitivity to interference from electromagnetic fields renders
KW  - Magnetic resonance imaging (MRI)
KW  - MR-stethoscope
KW  - Magnetic field strength
KW  - Left ventriular function
KW  - Cardiovascular MRI
Y1  - 2010
U6  - http://dx.doi.org/10.1007/s00330-009-1676-z
SN  - 1432-1084 (Onlineausgabe)
SN  - 0938-7994 (Druckausgabe)
VL  - 20
SP  - 1344
EP  - 1355
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Hardtdegen, Hilde
A1  - Ungermanns, C.
T1  - Comparative investigation of electrical and optical characteristics of AlxGa1-xAs/GaAs structures deposited by LP-MOVPE and MBE / H. Hardtdegen ; M. Hollfelder ; C. Ungermanns ... A. Förster ...
JF  - Compound semiconductors, 1994 : proceedings of the twenty-first International Symposium on Compound Semiconductors held in San Diego, California, 18 - 22 September, 1994 / ed. by Herb Goronkin ... - (Conference series / Institute of Physics ; 141)
Y1  - 1995
SN  - 0-7503-0226-7
N1  - International Symposium on Compound Semiconductors <21, 1994, San Diego, Calif.> ;  Institute of Physics <London>
SP  - 81
EP  - ff.
PB  - Institute of Physics
CY  - Bristol [u.a.]
ER  - 
TY  - JOUR
A1  - Hoffschmidt, Bernhard
A1  - Fend, Thomas
A1  - Jorgensen, Gary
T1  - Comparative assessment of solar concentrator materials / Thomas Fend ; Bernhard Hoffschmidt ; Gary Jorgensen ...
JF  - Renewable energy for local communities of Europe : (toward Rio+10) ; proceedings / EuroSun 2002, the 4th ISES Europe Solar Congress ; Bologna (Italy), 23 - 26 June 2002 / ISES Italia
Y1  - 2002
SN  - 88-900893-0-X
N1  - Eurosun <4, 2002, Bologna> ; International Solar Energy Society
SP  - paper_125.pdf
CY  - Bologna
ER  - 
TY  - JOUR
A1  - Hoffschmidt, Bernhard
A1  - Fend, Thomas
A1  - Jorgensen, Gary
A1  - Küster, Harald
T1  - Comparative assessment of solar concentrator materials / Fend, Thomas ; Hoffschmidt, Bernhard ; Jorgensen, Gary ; Küster, Harald ; Krüger, Dirk ; Pitz-Paal, Robert ; Riebrock, Peter ; Riffelmann, Klaus-Jürgen
JF  - Solar energy. 74 (2003), H. 2
Y1  - 2003
SN  - 0038-092X
SP  - 149
EP  - 155
ER  - 
TY  - JOUR
A1  - Sommer, F.
A1  - Gerling, Ulrich
A1  - Predel, Bruno
T1  - Comments on 'On the evaluation of interchange energies and the equilibrium constant from mixing enthalpies of a regular associated solution' by S. Lele, G.V.S. Sastry, and P. Ramachandrarao = Kommentar zu 'Zur Berechnung der Wechselwirkungsenergien und der Gleichgewichtskonstanten aus Mischungsenthalpien in regulären assoziierten Lösungen' von S. Lele, G.V.S. Sastry und P. Ramachandrarao
JF  - Zeitschrift für Metallkunde : international journal of materials research and advanced techniques. Bd. 75, H. 6
Y1  - 1984
SN  - 0044-3093 ; 0179-4841
SP  - 449
EP  - 454
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lachenmann, S. G.
A1  - Friedrich, I.
T1  - Charge transport in superconductor/semiconductor/normal-conductor step junctions / S. G. Lachenmann ; I. Friedrich ; A. Förster ...
JF  - Physical review / B, Condensed matter and materials physics. 56 (1997), H. 21
Y1  - 1997
SN  - 1095-3795
SP  - 14108
EP  - 14115
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Lütkemeier, E.
A1  - Wiedensohler, A.
T1  - Charge Distribution by Unipolar Charging of Small Aerosol Particles / Lütkemeier, E. ; Helsper, C. ; Wiedensohler, A.
JF  - Aerosols : formation and reactivity ; proceedings of the second International Aerosol Conference, 22-26 Sept. 1986, Berlin (West) / Gesellschaft für Aerosolforschung (GAeF) ; American Association for Aerosol Research (AAAR)
Y1  - 1986
N1  - International Aerosol Conference ; (2, 1986, Berlin (West))
SP  - 474
EP  - 478
PB  - Pergamon Press
CY  - Oxford [u.a.]
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Novak, J.
A1  - Kucera, M.
A1  - Morvic, M.
T1  - Characterization of low-temperature GaAs by galvanomagnetic an photoluminescence measurements / J. Novák ; M. Kucera ; M. Morvic ... A. Förster ...
JF  - Materials science and engineering B: Solid&#150; state materials for advanced technology. 44 (1997), H. 1-3
Y1  - 1997
SN  - 0921-5107
SP  - 341
EP  - 344
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Morvic, M.
A1  - Betko, J.
A1  - Novak, J.
T1  - Characterization of low-temperature GaAs by conductivity, Hall effect and magnetoresistance measurements.  Morvic, M., Betko, J.; Novak, J.; Förster, A.; Kordos, P.
JF  - 2nd Symposium on Non-Stoichiometric III-V Compounds : [4th - 6th October 1999, Erlangen] / [ed. by T. Marek ...] Friedrich-Alexander-Universität Erlangen-Nürnberg
Y1  - 1999
SN  - 3-932392-19-1
N1  - Symposium on Non-Stoichiometric III-V Compounds <2, 1999, Erlangen>
SP  - 79
EP  - 85
PB  - Lehrstuhl für Mikrocharakterisierung
CY  - Erlangen
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Mölter, W.
T1  - Characteristics of a Nebulizer with Cyclone Preseparator / Mölter, W. ; Helsper, C.
JF  - Aerosols, their generation, behaviour and applications. Annual Conference of the Aerosol Society / Aerosol Society (UK) ; 5.
Y1  - 1991
SP  - 89
EP  - 94
CY  - Loughborough
ER  - 
TY  - JOUR
A1  - Schwarzer, Klemens
A1  - Silva, Maria Eugenia Vieira da
T1  - Characterisation and design methods of solar cookers / Schwarzer, Klemens ; Silva, Maria Eugenia Vieira da
JF  - Solar energy. 82 (2008), H. 2
Y1  - 2008
SN  - 0038-092X
SP  - 157
EP  - 163
ER  - 
TY  - JOUR
A1  - Hoffstadt, Kevin
A1  - Pohen, Gino D.
A1  - Dicke, Max D.
A1  - Paulsen, Svea
A1  - Krafft, Simone
A1  - Zang, Joachim W.
A1  - Fonseca-Zang, Warde A. da
A1  - Leite, Athaydes
A1  - Kuperjans, Isabel
T1  - Challenges and prospects of biogas from energy cane as supplement to bioethanol production
JF  - Agronomy
N2  - Innovative breeds of sugar cane yield up to 2.5 times as much organic matter as conventional breeds, resulting in a great potential for biogas production. The use of biogas production as a complementary solution to conventional and second-generation ethanol production in Brazil may increase the energy produced per hectare in the sugarcane sector. Herein, it was demonstrated that through ensiling, energy cane can be conserved for six months; the stored cane can then be fed into a continuous biogas process. This approach is necessary to achieve year-round biogas production at an industrial scale. Batch tests revealed specific biogas potentials between 400 and 600 LN/kgVS for both the ensiled and non-ensiled energy cane, and the specific biogas potential of a continuous biogas process fed with ensiled energy cane was in the same range. Peak biogas losses through ensiling of up to 27% after six months were observed. Finally, compared with second-generation ethanol production using energy cane, the results indicated that biogas production from energy cane may lead to higher energy yields per hectare, with an average energy yield of up to 162 MWh/ha. Finally, the Farm²CBG concept is introduced, showing an approach for decentralized biogas production.
Y1  - 2020
U6  - http://dx.doi.org/10.3390/agronomy10060821
SN  - 2073-4395
VL  - 10
IS  - 6
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Fißan, H. J.
T1  - Calibration of the Polytec HC-15 and HC-70 Optical Particle Counters / Fißan, H. J. ; Helsper, C.
JF  - Aerosols in the mining and industrial work environments, Vol. 3. Instrumentation, Marple, Virgil A. ; Liu, Benjamin Y.
Y1  - 1983
N1  - International Symposium on Aerosols in the Mining and Industrial Work Environment ; (1981.11.01-06 : ; Minneapolis/Minn.)
SP  - 825
EP  - 829
PB  - Ann Arbor Science
CY  - Ann Arbor, Mich.
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Fißan, H. J.
A1  - Kasper, W.
T1  - Calibration of Optical Particle Counters with Respect to Particle Size / Fißan, H. J. ; Helsper, C.; Kasper, W.
JF  - Particle and Particle Systems Characterization. 1 (1984), H. 1984
Y1  - 1984
SN  - 1521-4117
SP  - 108
EP  - 111
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Wiesinger, J.
A1  - Zischank, Wolfgang J.
T1  - Calculation of the longitudinal voltage along metal tubes caused by lightning currents and protection measures
JF  - Seventh International Symposium on High Voltage Engineering : Dresden, August 26 - 30 1991
Y1  - 1991
N1  - International Symposium on High Voltage Engineering <7, 1991, Dresden>
PB  - Techn. Univ.
CY  - Dresden
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Schelthoff, Christof
A1  - Mathieu, Moritz
T1  - Calculation of interception efficiencies for airterminations using a dynamic electro-geometrical  model
Y1  - 2011
N1  - XI International Symposium on Lightning Protection (SIPDA), Fortaleza (Brasilien), 2011.
SP  - 1
EP  - 6
PB  - IEEE
CY  - New York
ER  - 
TY  - JOUR
A1  - Heel, Mareike van
A1  - Dikta, Gerhard
A1  - Braekers, Roel
T1  - Bootstrap based goodness‑of‑fit tests for binary multivariate regression models
JF  - Journal of the Korean Statistical Society
N2  - We consider a binary multivariate regression model where the conditional expectation of a binary variable given a higher-dimensional input variable belongs to a parametric family. Based on this, we introduce a model-based bootstrap (MBB) for higher-dimensional input variables. This test can be used to check whether a sequence of independent and identically distributed observations belongs to such a parametric family. The approach is based on the empirical residual process introduced by Stute (Ann Statist 25:613–641, 1997). In contrast to Stute and Zhu’s approach (2002) Stute & Zhu (Scandinavian J Statist 29:535–545, 2002), a transformation is not required. Thus, any problems associated with non-parametric regression estimation are avoided. As a result, the MBB method is much easier for users to implement. To illustrate the power of the MBB based tests, a small simulation study is performed. Compared to the approach of Stute & Zhu (Scandinavian J Statist 29:535–545, 2002), the simulations indicate a slightly improved power of the MBB based method. Finally, both methods are applied to a real data set.
Y1  - 2021
U6  - http://dx.doi.org/10.1007/s42952-021-00142-4
SN  - 2005-2863 (Online)
SN  - 1226-3192 (Print)
N1  - Corresponding author: Mareike van Heel
VL  - 51
PB  - Springer Nature
CY  - Singapur
ER  - 
TY  - JOUR
A1  - Rateike, Franz-Matthias
A1  - Siebourg, W.
A1  - Schmid, H.
A1  - Anders, S.
T1  - Birefringence - An important property of plastic substrates for magneto-optical storage disks / W. Siebourg ;  H. Schmid ;  F. M. Rateike ; S. Anders ; U. Grigo ; H. Löwer
JF  - Polymer engineering & science / Society of Plastics Engineers. 30 (1990), H. 18
Y1  - 1990
SN  - 0032-3888
SP  - 1133
EP  - 1139
ER  - 
TY  - JOUR
A1  - Darmo, J.
A1  - Schäffer, F.
A1  - Förster, Arnold
A1  - Kordos, P.
T1  - Beryllium doped low-temperature-grown MBE GaAs: material for photomixing in the THz frequency range
JF  - ASDAM 2000 : conference proceedings / edited by Jozef Osvald ... [et al.]
Y1  - 2000
SN  - 0780359399
N1  - International Conference on Advanced Semiconductor Devices and Microsystems ; (3rd : ; 2000 : ; Smolenice, Slovakia)
SP  - 147
EP  - 150
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Ohler, C.
A1  - Daniels, C.
T1  - Barrier height at clean Au/InAs(100) interfaces / C. Ohler ; C. Daniels ; A. Förster ...
JF  - Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures. 15 (1997), H. 3
Y1  - 1997
SN  - 0169-4332
SP  - 702
EP  - 706
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Ohler, C.
A1  - Moers, J.
T1  - Band offsets at heavily strained III - V interfaces / C. Ohler ; A. Förster ; J. Moers...
JF  - Journal of Physics D: Applied Physics. 30 (1997), H. 10
Y1  - 1997
SN  - 0022-3727
N1  - ISSN der E-Ausg.: 1361-6463
SP  - 1436
EP  - 1441
ER  - 
TY  - JOUR
A1  - Marx, Ulrich
A1  - Schenk, Friedrich
A1  - Behrens, Jan
A1  - Meyr, Ulrike
A1  - Wanek, Paul
A1  - Zang, Werner
A1  - Schmitt, Robert
A1  - Brüstle, Oliver
A1  - Zenke, Martin
A1  - Klocke, Fritz
T1  - Automatic production of induced pluripotent stem cells
JF  - Procedia CIRP : First CIRP Conference on BioManufacturing
Y1  - 2013
SN  - 2212-8271
VL  - Vol. 5
SP  - 2
EP  - 6
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Rosenauer, A.
A1  - Remmele, T.
T1  - Atomic scale strain measurements by the digital analysis of transmission electron microscopic lattice images / A. Rosenauer ; T. Remmele ; D. Gerthsen ... A. Förster
JF  - Optik : international journal for light and electron optics. 105 (1997), H. 3
Y1  - 1997
SN  - 0030-4026
SP  - 99
EP  - 107
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Rosenauer, A.
A1  - Oberst, W.
A1  - Gerthsen, D.
T1  - Atomic scale analysis of the indium distribution in InGaAs/GaAs (001) heterostructures: segregation, lateral indium redistribution and the effect of growth interruptions. Rosenauer, A. ; Oberst, W. ; Gerthsen, D. ; Förster, A.
JF  - Thin Solid Films. 357 (1999)
Y1  - 1999
SN  - 0040-6090
SP  - 18
EP  - 21
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Schäfer, B.-J.
A1  - Londschien, M.
T1  - Arsenic passivation of MOMBE grown GaAs surfaces / B. -J. Schäfer ;  A. Förster ; M. Londschien ...
JF  - Surface Science. 204 (1988), H. 3
Y1  - 1988
SN  - 0039-6028
N1  - ISSN der E-Ausg.: 0039-6028
SP  - 485
EP  - 490
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Resch, U.
A1  - Essera, N.
A1  - Raptis, Y. S.
T1  - Arsenic passivation of MBE grown GaAs(100): structural and electronic properties of the decapped surfaces / U. Resch ;  N. Essera ; Y. S. Raptis ... A. Förster ...
JF  - Surface Science. 269-270 (1992)
Y1  - 1992
SN  - 0039-6028
N1  - ISSN der E-Ausg.: 0039-6028
SP  - 797
EP  - 803
ER  - 
TY  - JOUR
A1  - Pieper, Martin
A1  - Klein, Peter
T1  - Application of simple, periodic homogenization techniques to non-linear heat conduction problems in non-periodic, porous media
JF  - Heat mass transfer
N2  - Often, detailed simulations of heat conduction in complicated, porous media have large runtimes. Then homogenization is a powerful tool to speed up the calculations by preserving accurate solutions at the same time. Unfortunately real structures are generally non-periodic, which requires unpractical, complicated homogenization techniques. We demonstrate in this paper, that the application of simple, periodic techniques to realistic media, that are just close to periodic, gives accurate, approximative solutions. In order to obtain effective parameters for the homogenized heat equation, we have to solve a so called “cell problem”. In contrast to periodic structures it is not trivial to determine a suitable unit cell, which represents a non-periodic media. To overcome this problem, we give a rule of thumb on how to choose a good cell. Finally we demonstrate the efficiency of our method for virtually generated foams as well as real foams and compare these results to periodic structures.
Y1  - 2012
U6  - http://dx.doi.org/10.1007/s00231-011-0879-4
SN  - 0947-7411
VL  - 48
IS  - 2
SP  - 291
EP  - 300
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Nießner, R.
A1  - Rönicke, G.
T1  - Application of a Multistep Condensation Nuclei Counter as a Detector for Particle Surface Composition / Nießner, R.; Helsper, C.; Rönicke, G.
JF  - Aerosols : science, technology, and industr. applications of airborne particles ; proceedings of the 1. Internat. Aerosol Conference held Sept. 17-21, 1984, Minneapolis, Minn., U.S.A / ed.: Benjamin Y. H. Liu
Y1  - 1984
SN  - 0444009477
N1  - International Aerosol Conference ; (1, 1984, Minneapolis, Minn.)
SP  - 63
EP  - 66
PB  - Elsevier
CY  - New York [u.a.]
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Nießner, R.
T1  - Application of a Multistep Condensation Nuclei Counter as a Detector for Particle Surface Composition / Nießner, R. ; Helsper, C.
JF  - Journal of Aerosol Science. 16 (1985), H. 3
Y1  - 1985
SN  - 0021-8502
SP  - 201
EP  - 209
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Darmo, J.
A1  - Dubecky, F.
A1  - Kordos, P.
T1  - Annealing effect on concentration of EL6-like deep-level state in low-temperature-grown molecular beam epitaxial GaAs. Darmo, J.; Dubecky, F.; Kordos, P.; Förster, A.
JF  - Applied Physics Letters. 72 (1998), H. 5
Y1  - 1998
SN  - 1077-3118
SP  - 590
EP  - 592
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Darmo, J.
A1  - Dubecký, F.
A1  - Kordos, P.
T1  - Annealing characteristics of native defects in low-temperature-grown MBE GaAs / J. Darmo ; F. Dubecky ; P. Kordos ; A. Förster
JF  - Semiconducting and insulating materials 1996 : proceedings of the 9th Conference on Semiconducting and Insulating Materials (SIMC '9), April 29 - May 3, 1996, Toulouse, France / [IEEE]
Y1  - 1996
SN  - 0-7803-3095-1
N1  - 2. ISBN: 0-7803-3179-6 ; Conference on Semiconducting and Insulating Materials <9, 1996, Toulouse> ; Institute of Electrical and Electronics Engineers ; IEEE Cat. No.96CH35881
SP  - 67
EP  - ff.
CY  - Piscataway, NJ [u.a.]
ER  - 
TY  - JOUR
A1  - Barsov, S.
A1  - Bechstedt, U.
A1  - Hardt, Arno
T1  - ANKE, a new facility for medium energy hadron physics at COSY-Jülich / S. Barsov [u.a.]
JF  - Nuclear instruments and methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. Vol. 462, iss. 3
Y1  - 2001
SN  - 0167-5087 (Print) ; 0168-9002 (E-journal)
SP  - 364
EP  - 381
ER  - 
TY  - JOUR
A1  - Butenweg, Christoph
A1  - Rosin, Julia
A1  - Holler, Stefan
T1  - Analysis of cylindrical granular material silos under seismic excitation
JF  - Buildings
N2  - Silos generally work as storage structures between supply and demand for various goods, and their structural safety has long been of interest to the civil engineering profession. This is especially true for dynamically loaded silos, e.g., in case of seismic excitation. Particularly thin-walled cylindrical silos are highly vulnerable to seismic induced pressures, which can cause critical buckling phenomena of the silo shell. The analysis of silos can be carried out in two different ways. In the first, the seismic loading is modeled through statically equivalent loads acting on the shell. Alternatively, a time history analysis might be carried out, in which nonlinear phenomena due to the filling as well as the interaction between the shell and the granular material are taken into account. The paper presents a comparison of these approaches. The model used for the nonlinear time history analysis considers the granular material by means of the intergranular strain approach for hypoplasticity theory. The interaction effects between the granular material and the shell is represented by contact elements. Additionally, soil–structure interaction effects are taken into account.
KW  - granular silo
KW  - earthquake engineering
KW  - hypoplasticity
KW  - nonlinear transient analyses
Y1  - 2017
U6  - http://dx.doi.org/10.3390/buildings7030061
SN  - 2075-5309
VL  - 7
IS  - 3
SP  - 1
EP  - 12
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Maurer, Florian
A1  - Rieke, Christian
A1  - Schemm, Ralf
A1  - Stollenwerk, Dominik
T1  - Analysis of an urban grid with high photovoltaic and e-mobility penetration
JF  - Energies
N2  - This study analyses the expected utilization of an urban distribution grid under high penetration of photovoltaic and e-mobility with charging infrastructure on a residential level. The grid utilization and the corresponding power flow are evaluated, while varying the control strategies and photovoltaic installed capacity in different scenarios. Four scenarios are used to analyze the impact of e-mobility. The individual mobility demand is modelled based on the largest German studies on mobility “Mobilität in Deutschland”, which is carried out every 5 years. To estimate the ramp-up of photovoltaic generation, a potential analysis of the roof surfaces in the supply area is carried out via an evaluation of an open solar potential study. The photovoltaic feed-in time series is derived individually for each installed system in a resolution of 15 min. The residential consumption is estimated using historical smart meter data, which are collected in London between 2012 and 2014. For a realistic charging demand, each residential household decides daily on the state of charge if their vehicle requires to be charged. The resulting charging time series depends on the underlying behavior scenario. Market prices and mobility demand are therefore used as scenario input parameters for a utility function based on the current state of charge to model individual behavior. The aggregated electricity demand is the starting point of the power flow calculation. The evaluation is carried out for an urban region with approximately 3100 residents. The analysis shows that increased penetration of photovoltaics combined with a flexible and adaptive charging strategy can maximize PV usage and reduce the need for congestion-related intervention by the grid operator by reducing the amount of kWh charged from the grid by 30% which reduces the average price of a charged kWh by 35% to 14 ct/kWh from 21.8 ct/kWh without PV optimization. The resulting grid congestions are managed by implementing an intelligent price or control signal. The analysis took place using data from a real German grid with 10 subgrids. The entire software can be adapted for the analysis of different distribution grids and is publicly available as an open-source software library on GitHub.
KW  - distribution grid simulation
KW  - smart-charging
KW  - e-mobility
Y1  - 2023
U6  - http://dx.doi.org/10.3390/en16083380
SN  - 1996-1073
N1  - This article belongs to the Special Issue "Advanced Solutions for the Efficient Integration of Electric Vehicles in Electricity Grids"
N1  - Corresponding author: Florian Maurer
VL  - 16
IS  - 8
PB  - MDPI
CY  - Basel
ER  -