TY  - JOUR
A1  - Alexopoulos, Spiros
A1  - Hoffschmidt, Bernhard
T1  - Advances in solar tower technology
JF  - Wiley interdisciplinary reviews : Energy and Environment : WIREs
Y1  - 2017
U6  - http://dx.doi.org/10.1002/wene.217
SN  - 2041-840X
VL  - 6
IS  - 1
SP  - 1
EP  - 19
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Scheibe, Klaus
A1  - Kern, Alexander
T1  - Aktueller Stand der Normung zum Überspannungschutz
JF  - 9. VDE/ABB-Blitzschutztagung : Vorträge der 9. VDE/ABB-Fachtagung vom 27. bis 28. Oktober 2011 in Neu-Ulm / Veranst.: Ausschuss für Blitzschutz und Blitzforschung (ABB) im VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V. Wiss. Tagungsleitung: K. Stimper
Y1  - 2011
SN  - 978-3-8007-3380-4
N1  - VDE/ABB-Blitzschutztagung ; (9 ; 2011.10.27-28 ; Neu-Ulm)
SP  - 13
EP  - 17
PB  - VDE-Verl.
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Kern, Alexander
T1  - Aktueller Stand zu Risikoabschätzungen bei Blitzeinschlägen - Was ist neu in der IEC 61662 Edition 2?
Y1  - 2000
N1  - Forum Verband Deutscher Blitzschutzfirmen e.V. <2000, Köln>
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Hasse, P.
A1  - Wiesinger, J.
A1  - Zischank, Wolfgang J.
T1  - Aktuelles aus der Blitzforschung
JF  - ETZ : Elektrotechnik + Automation. 112 (1991), H. 1
Y1  - 1991
SN  - 0170-1711
N1  - 2. ISSN: 0948-7387
ER  - 
TY  - JOUR
A1  - Walther, T.
A1  - Gerthsen, D.
A1  - Carius, Reinhard
A1  - Förster, Arnold
T1  - AlAs/GaAs Quantum well structures: Interface properties investigated by high-resolution transmission electron microscopy and photoluminescence spectroscopy / T. Walther ; D. Gerthsen ; R. Carius ; A. Förster ...
JF  - Microscopy of semiconducting materials 1993 : proceedings of the Royal Microscopical Society Conference held at Oxford University, 5 - 8 April 1993 / ed. by A. G. Cullis ... - (Conference series / Institute of Physics ; 134)
Y1  - 1993
SN  - 0-7503-0290-9
N1  - Royal Microscopical Society Conference on Microscopy of Semiconducting Materials <8, 1993, Oxford> ; MSM <8, 1993, Oxford>
SP  - 449
EP  - ff.
PB  - Institute of Physics
CY  - Bristol [u.a.]
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lauter, J.
A1  - Lüth, H.
T1  - AlGaAs/GaAs avalanche detector array -1 GBit/s X-ray receiver for timing measurements / J. Lauter ; A. Förster ; H. Lüth ...
JF  - 1995 IEEE conference record : October 21 - 28, 1995, San Francisco / Patricia A. Moonier, guest ed. - Vol. 1
Y1  - 1996
SN  - 0-7803-3180-X
N1  - Nuclear Science Symposium <1995, San Francisco, Calif.> ; Medical Imaging Conference <1995, San Francisco, Calif.> ; IEEE catalog number: 95CH35898
SP  - 579
EP  - ff.
PB  - IEEE Service Center
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lauter, J.
A1  - Lüth, H.
T1  - AlGaAs/GaAs avalanche detector array-1 GBit/s X-ray receiver fortiming measurements / J. Lauter ; A. Förster ; H. Lüth ...
JF  - IEEE Transactions on Nuclear Science (T-NS). 43 (1996), H. 3, Part 2
Y1  - 1996
SN  - 0018-9499
SP  - 1446
EP  - 1451
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lauter, J.
A1  - Protic, D.
A1  - Lüth, H.
T1  - AlGaAs/GaAs SAM-avalanche photodiode : an X-ray detector for low energy photons / J. Lauter ;  D. Protic ; A. Förster ; H. Lüth
JF  - Nuclear instruments and methods in physics research section A: Accelerators, spectrometers, detectors and associated equipment. 356 (1995), H. 2-3
Y1  - 1995
SN  - 0168-9002
SP  - 324
EP  - 329
ER  - 
TY  - JOUR
A1  - Hoyler, Friedrich
A1  - Mohr, P.
A1  - Staudt, G.
T1  - Alpha-cluster states of 212po in a realistic potential model
JF  - Physical review / C. 50 (1994), H. 5
Y1  - 1994
SN  - 0556-2813
SP  - 2631
EP  - 2634
ER  - 
TY  - JOUR
A1  - Fischer, W. A.
A1  - Dören, Horst-Peter
A1  - Janke, Dieter
T1  - Aluminium nitride probes for application in iron melts
JF  - Archiv für das Eisenhüttenwesen. 52 (1981), H. 3
Y1  - 1981
SN  - 0003-8962
SP  - 91
EP  - 98
ER  - 
TY  - JOUR
A1  - Lück, Reinhard
A1  - Gerling, Ulrich
A1  - Predel, Bruno
T1  - An entropy paradox of the association model
JF  - Zeitschrift für Metallkunde : international journal of materials research and advanced techniques. Bd. 80, H. 4
Y1  - 1989
SN  - 0044-3093 ; 0179-4841
SP  - 270
EP  - 275
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Marso, M.
A1  - Gersdorf, P.
A1  - Fox, A.
T1  - An InAlAs-InGaAs OPFET with responsivity above 200 A/W at 1.3-&#956;m wavelength. Marso, M.; Gersdorf, P.; Fox, A.; Hodel, U.; Lambertini, R.; Kordos, P.
JF  - IEEE Photonics Technology Letters. 11 (1999), H. 1
Y1  - 1999
SN  - 1041-1135
SP  - 117
EP  - 119
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Verghese, S.
A1  - Zamdmer, N.
A1  - Hu, Qing
T1  - An optical correlator using a low-temperature-grown GaAs photoconductor / S. Verghese ; N. Zamdmer ; Qing Hu .... A. Förster
JF  - Applied physics letters. 69 (1996), H. 6
Y1  - 1996
SN  - 0003-6951
N1  - ISSN der E-Ausg.: 1077-3118
SP  - 842
EP  - 844
ER  - 
TY  - JOUR
A1  - Cheenakula, Dheeraja
A1  - Hoffstadt, Kevin
A1  - Krafft, Simone
A1  - Reinecke, Diana
A1  - Klose, Holger
A1  - Kuperjans, Isabel
A1  - Grömping, Markus
T1  - Anaerobic digestion of algal–bacterial biomass of an Algal Turf Scrubber system
JF  - Biomass Conversion and Biorefinery
N2  - This study investigated the anaerobic digestion of an algal–bacterial biofilm grown in artificial wastewater in an Algal Turf Scrubber (ATS). The ATS system was located in a greenhouse (50°54′19ʺN, 6°24′55ʺE, Germany) and was exposed to seasonal conditions during the experiment period. The methane (CH4) potential of untreated algal–bacterial biofilm (UAB) and thermally pretreated biofilm (PAB) using different microbial inocula was determined by anaerobic batch fermentation. Methane productivity of UAB differed significantly between microbial inocula of digested wastepaper, a mixture of manure and maize silage, anaerobic sewage sludge, and percolated green waste. UAB using sewage sludge as inoculum showed the highest methane productivity. The share of methane in biogas was dependent on inoculum. Using PAB, a strong positive impact on methane productivity was identified for the digested wastepaper (116.4%) and a mixture of manure and maize silage (107.4%) inocula. By contrast, the methane yield was significantly reduced for the digested anaerobic sewage sludge (50.6%) and percolated green waste (43.5%) inocula. To further evaluate the potential of algal–bacterial biofilm for biogas production in wastewater treatment and biogas plants in a circular bioeconomy, scale-up calculations were conducted. It was found that a 0.116 km2 ATS would be required in an average municipal wastewater treatment plant which can be viewed as problematic in terms of space consumption. However, a substantial amount of energy surplus (4.7–12.5 MWh a−1) can be gained through the addition of algal–bacterial biomass to the anaerobic digester of a municipal wastewater treatment plant. Wastewater treatment and subsequent energy production through algae show dominancy over conventional technologies.
KW  - Biogas
KW  - Methane
KW  - Algal Turf Scrubber
KW  - Algal–bacterial bioflm
KW  - Circular bioeconomy
Y1  - 2022
U6  - http://dx.doi.org/10.1007/s13399-022-03236-z
SN  - 2190-6823
N1  - Corresponding author: Dheeraja Cheenakula
VL  - 13
SP  - 15 Seiten
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Kuperjans, Isabel
A1  - Starke, M.
A1  - Esser, J.
A1  - [u.a.], 
T1  - Analyse und Konzeption von Energieanlagen unter ökologischen, wirtschaftlichen und technischen Gesichtspunkten
JF  - WLB : Umwelttechnik für Industrie und Kommune
Y1  - 2000
SN  - 0341-2679
VL  - 44
IS  - 11/12
SP  - 26
EP  - 29
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  - 
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  - 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  - Kern, Alexander
A1  - Zischank, Wolfgang
A1  - Beierl, Ottmar
T1  - Anmerkungen zur Berechnung des Trennungsabstands nach DIN EN 62305-3 (VDE 0185-305-3): 2006-10  / Zischank, Wolfgang ; Beierl, Ottmar ; Kern, Alexander
JF  - 7. VDE-ABB-Blitzschutztagung : Vorträge der VDE-ABB-Fachtagung vom 15. bis 16. November 2007 in Neu-Ulm / Veranst.: Ausschuss für Blitzschutz und Blitzforschung (ABB) im VDE, Verband der Elektrotechnik, Elektronik, Informationstechnik e.V. Wiss. Tagungsltg.: K. Stimper
Y1  - 2007
SN  - 978-3-8007-3062-9
N1  - VDE-Fachbericht ; 64  ; Blitzschutztagung <7, 2007, Neu-Ulm>
SP  - 1
EP  - 8
PB  - VDE-Verl.
CY  - Berlin
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  -