@article{BarsovBechstedtHardt2001, author = {Barsov, S. and Bechstedt, U. and Hardt, Arno}, title = {ANKE, a new facility for medium energy hadron physics at COSY-J{\"u}lich / S. Barsov [u.a.]}, series = {Nuclear instruments and methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. Vol. 462, iss. 3}, journal = {Nuclear instruments and methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. Vol. 462, iss. 3}, issn = {0167-5087 (Print) ; 0168-9002 (E-journal)}, pages = {364 -- 381}, year = {2001}, language = {en} } @article{ButenwegRosinHoller2017, author = {Butenweg, Christoph and Rosin, Julia and Holler, Stefan}, title = {Analysis of cylindrical granular material silos under seismic excitation}, series = {Buildings}, volume = {7}, journal = {Buildings}, number = {3}, publisher = {MDPI}, address = {Basel}, issn = {2075-5309}, doi = {10.3390/buildings7030061}, pages = {1 -- 12}, year = {2017}, abstract = {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.}, language = {en} } @article{MaurerRiekeSchemmetal.2023, author = {Maurer, Florian and Rieke, Christian and Schemm, Ralf and Stollenwerk, Dominik}, title = {Analysis of an urban grid with high photovoltaic and e-mobility penetration}, series = {Energies}, volume = {16}, journal = {Energies}, number = {8}, publisher = {MDPI}, address = {Basel}, issn = {1996-1073}, doi = {10.3390/en16083380}, pages = {18 Seiten}, year = {2023}, abstract = {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 "Mobilit{\"a}t 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.}, language = {en} } @article{KuperjansStarkeEsseretal.2000, author = {Kuperjans, Isabel and Starke, M. and Esser, J. and [u.a.],}, title = {Analyse und Konzeption von Energieanlagen unter {\"o}kologischen, wirtschaftlichen und technischen Gesichtspunkten}, series = {WLB : Umwelttechnik f{\"u}r Industrie und Kommune}, volume = {44}, journal = {WLB : Umwelttechnik f{\"u}r Industrie und Kommune}, number = {11/12}, issn = {0341-2679}, pages = {26 -- 29}, year = {2000}, language = {de} } @article{CheenakulaHoffstadtKrafftetal.2022, author = {Cheenakula, Dheeraja and Hoffstadt, Kevin and Krafft, Simone and Reinecke, Diana and Klose, Holger and Kuperjans, Isabel and Gr{\"o}mping, Markus}, title = {Anaerobic digestion of algal-bacterial biomass of an Algal Turf Scrubber system}, series = {Biomass Conversion and Biorefinery}, volume = {13}, journal = {Biomass Conversion and Biorefinery}, publisher = {Springer}, address = {Berlin}, issn = {2190-6823}, doi = {10.1007/s13399-022-03236-z}, pages = {15 Seiten}, year = {2022}, abstract = {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.}, language = {en} } @article{FoersterVergheseZamdmeretal.1996, author = {F{\"o}rster, Arnold and Verghese, S. and Zamdmer, N. and Hu, Qing}, title = {An optical correlator using a low-temperature-grown GaAs photoconductor / S. Verghese ; N. Zamdmer ; Qing Hu .... A. F{\"o}rster}, series = {Applied physics letters. 69 (1996), H. 6}, journal = {Applied physics letters. 69 (1996), H. 6}, isbn = {0003-6951}, pages = {842 -- 844}, year = {1996}, language = {en} } @article{FoersterMarsoGersdorfetal.1999, author = {F{\"o}rster, Arnold and Marso, M. and Gersdorf, P. and Fox, A.}, title = {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.}, series = {IEEE Photonics Technology Letters. 11 (1999), H. 1}, journal = {IEEE Photonics Technology Letters. 11 (1999), H. 1}, isbn = {1041-1135}, pages = {117 -- 119}, year = {1999}, language = {en} } @article{LueckGerlingPredel1989, author = {L{\"u}ck, Reinhard and Gerling, Ulrich and Predel, Bruno}, title = {An entropy paradox of the association model}, series = {Zeitschrift f{\"u}r Metallkunde : international journal of materials research and advanced techniques. Bd. 80, H. 4}, journal = {Zeitschrift f{\"u}r Metallkunde : international journal of materials research and advanced techniques. Bd. 80, H. 4}, issn = {0044-3093 ; 0179-4841}, pages = {270 -- 275}, year = {1989}, language = {en} } @article{FischerDoerenJanke1981, author = {Fischer, W. A. and D{\"o}ren, Horst-Peter and Janke, Dieter}, title = {Aluminium nitride probes for application in iron melts}, series = {Archiv f{\"u}r das Eisenh{\"u}ttenwesen. 52 (1981), H. 3}, journal = {Archiv f{\"u}r das Eisenh{\"u}ttenwesen. 52 (1981), H. 3}, issn = {0003-8962}, pages = {91 -- 98}, year = {1981}, language = {en} } @article{HoylerMohrStaudt1994, author = {Hoyler, Friedrich and Mohr, P. and Staudt, G.}, title = {Alpha-cluster states of 212po in a realistic potential model}, series = {Physical review / C. 50 (1994), H. 5}, journal = {Physical review / C. 50 (1994), H. 5}, isbn = {0556-2813}, pages = {2631 -- 2634}, year = {1994}, language = {en} } @article{FoersterLauterProticetal.1995, author = {F{\"o}rster, Arnold and Lauter, J. and Protic, D. and L{\"u}th, H.}, title = {AlGaAs/GaAs SAM-avalanche photodiode : an X-ray detector for low energy photons / J. Lauter ; D. Protic ; A. F{\"o}rster ; H. L{\"u}th}, series = {Nuclear instruments and methods in physics research section A: Accelerators, spectrometers, detectors and associated equipment. 356 (1995), H. 2-3}, journal = {Nuclear instruments and methods in physics research section A: Accelerators, spectrometers, detectors and associated equipment. 356 (1995), H. 2-3}, isbn = {0168-9002}, pages = {324 -- 329}, year = {1995}, language = {en} } @article{FoersterLauterLueth1996, author = {F{\"o}rster, Arnold and Lauter, J. and L{\"u}th, H.}, title = {AlGaAs/GaAs avalanche detector array-1 GBit/s X-ray receiver fortiming measurements / J. Lauter ; A. F{\"o}rster ; H. L{\"u}th ...}, series = {IEEE Transactions on Nuclear Science (T-NS). 43 (1996), H. 3, Part 2}, journal = {IEEE Transactions on Nuclear Science (T-NS). 43 (1996), H. 3, Part 2}, isbn = {0018-9499}, pages = {1446 -- 1451}, year = {1996}, language = {en} } @article{FoersterLauterLueth1996, author = {F{\"o}rster, Arnold and Lauter, J. and L{\"u}th, H.}, title = {AlGaAs/GaAs avalanche detector array -1 GBit/s X-ray receiver for timing measurements / J. Lauter ; A. F{\"o}rster ; H. L{\"u}th ...}, series = {1995 IEEE conference record : October 21 - 28, 1995, San Francisco / Patricia A. Moonier, guest ed. - Vol. 1}, journal = {1995 IEEE conference record : October 21 - 28, 1995, San Francisco / Patricia A. Moonier, guest ed. - Vol. 1}, publisher = {IEEE Service Center}, address = {Piscataway, NJ}, isbn = {0-7803-3180-X}, pages = {579 -- ff.}, year = {1996}, language = {en} } @article{WaltherGerthsenCariusetal.1993, author = {Walther, T. and Gerthsen, D. and Carius, Reinhard and F{\"o}rster, Arnold}, title = {AlAs/GaAs Quantum well structures: Interface properties investigated by high-resolution transmission electron microscopy and photoluminescence spectroscopy / T. Walther ; D. Gerthsen ; R. Carius ; A. F{\"o}rster ...}, series = {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)}, journal = {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)}, publisher = {Institute of Physics}, address = {Bristol [u.a.]}, isbn = {0-7503-0290-9}, pages = {449 -- ff.}, year = {1993}, language = {en} } @article{KernHasseWiesingeretal.1991, author = {Kern, Alexander and Hasse, P. and Wiesinger, J. and Zischank, Wolfgang J.}, title = {Aktuelles aus der Blitzforschung}, series = {ETZ : Elektrotechnik + Automation. 112 (1991), H. 1}, journal = {ETZ : Elektrotechnik + Automation. 112 (1991), H. 1}, isbn = {0170-1711}, year = {1991}, language = {de} } @article{Kern2000, author = {Kern, Alexander}, title = {Aktueller Stand zu Risikoabsch{\"a}tzungen bei Blitzeinschl{\"a}gen - Was ist neu in der IEC 61662 Edition 2?}, year = {2000}, language = {de} } @article{ScheibeKern2011, author = {Scheibe, Klaus and Kern, Alexander}, title = {Aktueller Stand der Normung zum {\"U}berspannungschutz}, series = {9. VDE/ABB-Blitzschutztagung : Vortr{\"a}ge der 9. VDE/ABB-Fachtagung vom 27. bis 28. Oktober 2011 in Neu-Ulm / Veranst.: Ausschuss f{\"u}r Blitzschutz und Blitzforschung (ABB) im VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V. Wiss. Tagungsleitung: K. Stimper}, journal = {9. VDE/ABB-Blitzschutztagung : Vortr{\"a}ge der 9. VDE/ABB-Fachtagung vom 27. bis 28. Oktober 2011 in Neu-Ulm / Veranst.: Ausschuss f{\"u}r Blitzschutz und Blitzforschung (ABB) im VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V. Wiss. Tagungsleitung: K. Stimper}, publisher = {VDE-Verl.}, address = {Berlin}, isbn = {978-3-8007-3380-4}, pages = {13 -- 17}, year = {2011}, language = {de} } @article{AlexopoulosHoffschmidt2017, author = {Alexopoulos, Spiros and Hoffschmidt, Bernhard}, title = {Advances in solar tower technology}, series = {Wiley interdisciplinary reviews : Energy and Environment : WIREs}, volume = {6}, journal = {Wiley interdisciplinary reviews : Energy and Environment : WIREs}, number = {1}, publisher = {Wiley}, address = {Weinheim}, issn = {2041-840X}, doi = {10.1002/wene.217}, pages = {1 -- 19}, year = {2017}, language = {en} } @article{SchwagerFleschSchwarzboezletal.2022, author = {Schwager, Christian and Flesch, Robert and Schwarzb{\"o}zl, Peter and Herrmann, Ulf and Teixeira Boura, Cristiano Jos{\´e}}, title = {Advanced two phase flow model for transient molten salt receiver system simulation}, series = {Solar Energy}, volume = {232}, journal = {Solar Energy}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0038-092X (print)}, doi = {10.1016/j.solener.2021.12.065}, pages = {362 -- 375}, year = {2022}, abstract = {In order to realistically predict and optimize the actual performance of a concentrating solar power (CSP) plant sophisticated simulation models and methods are required. This paper presents a detailed dynamic simulation model for a Molten Salt Solar Tower (MST) system, which is capable of simulating transient operation including detailed startup and shutdown procedures including drainage and refill. For appropriate representation of the transient behavior of the receiver as well as replication of local bulk and surface temperatures a discretized receiver model based on a novel homogeneous two-phase (2P) flow modelling approach is implemented in Modelica Dymola®. This allows for reasonable representation of the very different hydraulic and thermal properties of molten salt versus air as well as the transition between both. This dynamic 2P receiver model is embedded in a comprehensive one-dimensional model of a commercial scale MST system and coupled with a transient receiver flux density distribution from raytracing based heliostat field simulation. This enables for detailed process prediction with reasonable computational effort, while providing data such as local salt film and wall temperatures, realistic control behavior as well as net performance of the overall system. Besides a model description, this paper presents some results of a validation as well as the simulation of a complete startup procedure. Finally, a study on numerical simulation performance and grid dependencies is presented and discussed.}, language = {en} } @article{HoylerPetkovAndrejtscheff1988, author = {Hoyler, Friedrich and Petkov, P. and Andrejtscheff, W.}, title = {Absolute E0, E1 and E2 transition rates in even-even nuclei obtained in thermal neutron capture / P. Petkov ; W. Andrejtscheff ... F. Hoyler ...}, series = {Journal of Physics G. 14 (1988), H. S}, journal = {Journal of Physics G. 14 (1988), H. S}, isbn = {0305-4616}, pages = {S97 -- S102}, year = {1988}, language = {en} }