@article{DarmoSchaefferFoersteretal.2000, author = {Darmo, J. and Sch{\"a}ffer, F. and F{\"o}rster, Arnold and Kordos, P.}, title = {Beryllium doped low-temperature-grown MBE GaAs: material for photomixing in the THz frequency range}, series = {ASDAM 2000 : conference proceedings / edited by Jozef Osvald ... [et al.]}, journal = {ASDAM 2000 : conference proceedings / edited by Jozef Osvald ... [et al.]}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {0780359399}, pages = {147 -- 150}, year = {2000}, language = {en} } @article{ChudobaButenwegPeiffer2004, author = {Chudoba, Rostislav and Butenweg, Christoph and Peiffer, F.}, title = {Technical information system for collaborative material research}, series = {Advances in engineering software}, volume = {Volume 35}, journal = {Advances in engineering software}, number = {Issue 10-11}, issn = {1873-5339 (E-Journal); 0965-9978 (Print)}, doi = {10.1016/j.advengsoft.2004.03.021}, pages = {747 -- 756}, year = {2004}, language = {en} } @article{ChenClauserMarquartetal.2015, author = {Chen, Tao and Clauser, Christoph and Marquart, Gabriele and Willbrand, Karen and Mottaghy, Darius}, title = {A new upscaling method for fractured porous media}, series = {Advances in Water Resources}, volume = {80}, journal = {Advances in Water Resources}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0309-1708}, doi = {10.1016/j.advwatres.2015.03.009}, pages = {60 -- 68}, year = {2015}, language = {en} } @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{BoehmHellmannsBackesetal.2006, author = {B{\"o}hm, Stefan and Hellmanns, Mark and Backes, Andreas and Dilger, Klaus}, title = {Lock-in thermography based NDT of parts for the automotive industry}, series = {Journal of adhesion and interface}, volume = {Vol. 7}, journal = {Journal of adhesion and interface}, number = {No. 4}, pages = {10 -- 12}, year = {2006}, 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{ButenwegMarinkovicSalatic2019, author = {Butenweg, Christoph and Marinkovic, Marko and Salatic, Ratko}, title = {Experimental results of reinforced concrete frames with masonry infills under combined quasi-static in-plane and out-of-plane seismic loading}, series = {Bulletin of Earthquake Engineering}, volume = {17}, journal = {Bulletin of Earthquake Engineering}, publisher = {Springer}, address = {Berlin}, issn = {1573-1456}, doi = {10.1007/s10518-019-00602-7}, pages = {3397 -- 3422}, year = {2019}, language = {en} } @article{ButenwegMarinkovicKubalskietal.2016, author = {Butenweg, Christoph and Marinkovic, Marko and Kubalski, Thomas and Klinkel, Sven}, title = {Masonry infilled reinforced concrete frames under horizontal loading}, series = {Mauerwerk}, volume = {20}, journal = {Mauerwerk}, number = {4}, publisher = {Ernst \& Sohn}, address = {Berlin}, issn = {1437-1022}, doi = {10.1002/dama.201600703}, pages = {305 -- 312}, year = {2016}, abstract = {The behaviour of infilled reinforced concrete frames under horizontal load has been widely investigated, both experimentally and numerically. Since experimental tests represent large investments, numerical simulations offer an efficient approach for a more comprehensive analysis. When RC frames with masonry infill walls are subjected to horizontal loading, their behaviour is highly non-linear after a certain limit, which makes their analysis quite difficult. The non-linear behaviour results from the complex inelastic material properties of the concrete, infill wall and conditions at the wall-frame interface. In order to investigate this non-linear behaviour in detail, a finite element model using a micro modelling approach is developed, which is able to predict the complex non-linear behaviour resulting from the different materials and their interaction. Concrete and bricks are represented by a non-linear material model, while each reinforcement bar is represented as an individual part installed in the concrete part and behaving elasto-plastically. Each brick is modelled individually and connected taking into account the non-linearity of a brick mortar interface. The same approach is followed using two finite element software packages and the results are compared with the experimental results. The numerical models show a good agreement with the experiments in predicting the overall behaviour, but also very good matching for strength capacity and drift. The results emphasize the quality and the valuable contribution of the numerical models for use in parametric studies, which are needed for the derivation of design recommendations for infilled frame structures.}, language = {en} } @article{ButenwegBursiPaolaccietal.2021, author = {Butenweg, Christoph and Bursi, Oreste S. and Paolacci, Fabrizio and Marinković, Marko and Lanese, Igor and Nardin, Chiara and Quinci, Gianluca}, title = {Seismic performance of an industrial multi-storey frame structure with process equipment subjected to shake table testing}, series = {Engineering Structures}, volume = {243}, journal = {Engineering Structures}, number = {15}, editor = {Yang, J.}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0141-0296}, doi = {10.1016/j.engstruct.2021.112681}, year = {2021}, abstract = {Past earthquakes demonstrated the high vulnerability of industrial facilities equipped with complex process technologies leading to serious damage of process equipment and multiple and simultaneous release of hazardous substances. Nonetheless, current standards for seismic design of industrial facilities are considered inadequate to guarantee proper safety conditions against exceptional events entailing loss of containment and related consequences. On these premises, the SPIF project -Seismic Performance of Multi-Component Systems in Special Risk Industrial Facilities- was proposed within the framework of the European H2020 SERA funding scheme. In detail, the objective of the SPIF project is the investigation of the seismic behaviour of a representative industrial multi-storey frame structure equipped with complex process components by means of shaking table tests. Along this main vein and in a performance-based design perspective, the issues investigated in depth are the interaction between a primary moment resisting frame (MRF) steel structure and secondary process components that influence the performance of the whole system; and a proper check of floor spectra predictions. The evaluation of experimental data clearly shows a favourable performance of the MRF structure, some weaknesses of local details due to the interaction between floor crossbeams and process components and, finally, the overconservatism of current design standards w.r.t. floor spectra predictions.}, language = {en} } @article{BruessermannAshtonLeichtetal.1994, author = {Br{\"u}ssermann, Klaus and Ashton, P. and Leicht, R. and Martens, B.-R.}, title = {Concept of the Konrad repository documentation system for radioactive wastes (DORA) / Ashton, P.; Leicht, R.; Martens, B.-R.; Giller, H. Br{\"u}ssermann, K.}, series = {Kerntechnik 94 : Jahrestagung, 17.-19. Mai 1994, Stuttgart: Tagungsbericht = Nuclear technology, annual meeting 94 / Veranst.: Kerntechnische Gesellschaft; Deutsches Atomforum}, journal = {Kerntechnik 94 : Jahrestagung, 17.-19. Mai 1994, Stuttgart: Tagungsbericht = Nuclear technology, annual meeting 94 / Veranst.: Kerntechnische Gesellschaft; Deutsches Atomforum}, publisher = {INFORUM Verl.- u. Verwaltungs-Ges.}, address = {Bonn}, pages = {294 -- 297}, year = {1994}, language = {en} } @article{Bruessermann1989, author = {Br{\"u}ssermann, Klaus}, title = {H3 and C14 air monitoring according to KTA 1503.1}, series = {2. Karlsruhe international conference on analytical chemistry in nuclear technology, Karlsruhe (Germany), 5-9 Jun 1989}, journal = {2. Karlsruhe international conference on analytical chemistry in nuclear technology, Karlsruhe (Germany), 5-9 Jun 1989}, pages = {223}, year = {1989}, language = {en} } @article{BreitbachWolfDeschkaetal.1992, author = {Breitbach, Gerd and Wolf, U. and Deschka, S. and Nickel, H.}, title = {Thermomechanical analysis of an actively cooled divertor mock up}, series = {Tagungsbericht : Jahrestagung Kerntechnik : Stadthalle Karlsruhe, 5.-7. Mai 1992, Karlsruhe = Proceedings / Kerntechnische Gesellschaft ... [Red.: Karl G. Bauer]. - 1. Aufl., als Ms. gedr..}, journal = {Tagungsbericht : Jahrestagung Kerntechnik : Stadthalle Karlsruhe, 5.-7. Mai 1992, Karlsruhe = Proceedings / Kerntechnische Gesellschaft ... [Red.: Karl G. Bauer]. - 1. Aufl., als Ms. gedr..}, publisher = {INFOFORUM}, address = {Bonn}, pages = {457 -- 461}, year = {1992}, language = {en} } @article{BreitbachSchubert2004, author = {Breitbach, Gerd and Schubert, F.}, title = {A contribution to stress prediction in coatings for gas turbine blades}, series = {Archive of applied mechanics. 73 (2004), H. 9-10}, journal = {Archive of applied mechanics. 73 (2004), H. 9-10}, isbn = {0939-1533}, pages = {682 -- 689}, year = {2004}, language = {en} } @article{BreitbachSchmidtPlutkaSchubertetal.1993, author = {Breitbach, Gerd and Schmidt-Plutka, A. and Schubert, F. and Nickel, H.}, title = {Deformation behaviour of structures exposed at very high temperatures to cyclic thermal and mechanical loadings}, series = {Structural mechanics in reactor technology : transactions of the 12th International Conference on Structural Mechanics in Reactor Technology, Stuttgart, Germany, 15-20 August 1993 / ed. Karl F. Kussmaul. - Bd. L : Inelastic behaviour of solids and structures}, journal = {Structural mechanics in reactor technology : transactions of the 12th International Conference on Structural Mechanics in Reactor Technology, Stuttgart, Germany, 15-20 August 1993 / ed. Karl F. Kussmaul. - Bd. L : Inelastic behaviour of solids and structures}, publisher = {Elsevier}, address = {Amsterdam [u.a.]}, isbn = {0-444-81515-5}, pages = {203 -- 208}, year = {1993}, language = {en} } @article{BreitbachDeschkaAkiba1992, author = {Breitbach, Gerd and Deschka, S. and Akiba, M.}, title = {High heat flux tests on brazed divertor components in electron and ion beam test facilities / S. Deschka ; M. Akiba ; G. Breitbach ...}, series = {International journal of refractory metals and hard materials. 11 (1992), H. 6}, journal = {International journal of refractory metals and hard materials. 11 (1992), H. 6}, isbn = {0263-4368}, pages = {367 -- 375}, year = {1992}, language = {en} } @article{BouquegneauKernRousseau2010, author = {Bouquegneau, Christian and Kern, Alexander and Rousseau, Alain}, title = {Lightning safety guidelines}, pages = {1 -- 6}, year = {2010}, language = {en} } @article{BlankeHagenkampDoeringetal.2021, author = {Blanke, Tobias and Hagenkamp, Markus and D{\"o}ring, Bernd and G{\"o}ttsche, Joachim and Reger, Vitali and Kuhnhenne, Markus}, title = {Net-exergetic, hydraulic and thermal optimization of coaxial heat exchangers using fixed flow conditions instead of fixed flow rates}, series = {Geothermal Energy}, volume = {9}, journal = {Geothermal Energy}, number = {Article number: 19}, publisher = {Springer}, address = {Berlin}, issn = {2195-9706}, doi = {10.1186/s40517-021-00201-3}, pages = {23 Seiten}, year = {2021}, abstract = {Previous studies optimized the dimensions of coaxial heat exchangers using constant mass fow rates as a boundary condition. They show a thermal optimal circular ring width of nearly zero. Hydraulically optimal is an inner to outer pipe radius ratio of 0.65 for turbulent and 0.68 for laminar fow types. In contrast, in this study, fow conditions in the circular ring are kept constant (a set of fxed Reynolds numbers) during optimization. This approach ensures fxed fow conditions and prevents inappropriately high or low mass fow rates. The optimization is carried out for three objectives: Maximum energy gain, minimum hydraulic efort and eventually optimum net-exergy balance. The optimization changes the inner pipe radius and mass fow rate but not the Reynolds number of the circular ring. The thermal calculations base on Hellstr{\"o}m's borehole resistance and the hydraulic optimization on individually calculated linear loss of head coefcients. Increasing the inner pipe radius results in decreased hydraulic losses in the inner pipe but increased losses in the circular ring. The net-exergy diference is a key performance indicator and combines thermal and hydraulic calculations. It is the difference between thermal exergy fux and hydraulic efort. The Reynolds number in the circular ring is instead of the mass fow rate constant during all optimizations. The result from a thermal perspective is an optimal width of the circular ring of nearly zero. The hydraulically optimal inner pipe radius is 54\% of the outer pipe radius for laminar fow and 60\% for turbulent fow scenarios. Net-exergetic optimization shows a predominant infuence of hydraulic losses, especially for small temperature gains. The exact result depends on the earth's thermal properties and the fow type. Conclusively, coaxial geothermal probes' design should focus on the hydraulic optimum and take the thermal optimum as a secondary criterion due to the dominating hydraulics.}, language = {en} } @article{BergPostweilerSteuerDankertLeichtScholten2023, author = {Berg-Postweiler, Julia and Steuer-Dankert, Linda and Leicht-Scholten, Carmen}, title = {One size does not fit all: Applying antibias trainings in academia}, series = {The International Journal of Organizational Diversity}, volume = {24}, journal = {The International Journal of Organizational Diversity}, number = {1}, publisher = {Common Ground Research Networks}, issn = {2328-6261 (Print)}, doi = {10.18848/2328-6261/CGP/v24i01/1-23}, pages = {1 -- 23}, year = {2023}, abstract = {Antibias training is increasingly demanded and practiced in academia and industry to increase employees' sensitivity to discrimination, racism, and diversity. Under the heading of "Diversity Management," antibias trainings are mainly offered as one-off workshops intending to raise awareness of unconscious biases, create a diversity-affirming corporate culture, promote awareness of the potential of diversity, and ultimately enable the reflection of diversity in development processes. However, coming from childhood education, research and scientific articles on the sustainable effectiveness of antibias in adulthood, especially in academia, are very scarce. In order to fill this research gap, the article aims to explore how sustainable the effects of individual antibias trainings on participants' behavior are. In order to investigate this, participant observation in a qualitative pre-post setting was conducted, analyzing antibias training in an academic context. Two observers actively participated in the training sessions and documented the activities and reflection processes of the participants. Overall, the results question the effectiveness of single antibias trainings and show that a target-group adaptive approach is mandatory owing to the background of the approach in early childhood education. Therefore, antibias work needs to be adapted to the target group's needs and realities of life. Furthermore, the study reveals that single antibias trainings must be embedded in a holistic diversity management approach to stimulate sustainable reflection processes among the target group. This article is one of the first to scientifically evaluate antibias training effectiveness, especially in engineering sciences and the university context.}, language = {en} } @article{BeckerFrauenrathHezeletal.2010, author = {Becker, Meike and Frauenrath, Tobias and Hezel, Fabian and Krombach, Gabriele A. and Kremer, Ute and Koppers, Benedikt and Butenweg, Christoph and Goemmel, Andreas and Utting, Jane F. and Schulz-Menger, Jeanette and Niendorf, Thoralf}, title = {Comparison of left ventricular function assessment using phonocardiogram- and electrocardiogram-triggered 2D SSFP CINE MR imaging at 1.5 T and 3.0 T}, series = {European Radiology}, volume = {20}, journal = {European Radiology}, publisher = {Springer}, address = {Berlin}, issn = {1432-1084 (Onlineausgabe)}, doi = {10.1007/s00330-009-1676-z}, pages = {1344 -- 1355}, year = {2010}, abstract = {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}, language = {en} } @article{BechstedtHaasHackeretal.1985, author = {Bechstedt, U. and Haas, H. and Hacker, U. and Hardt, Arno and Henn, K. and Martin, S. and Wimmer, J.}, title = {Magnets for the German Spallation Source SNQ}, series = {IEEE transactions on nuclear science. Vol. 32, iss. 5}, journal = {IEEE transactions on nuclear science. Vol. 32, iss. 5}, issn = {1558-1578 (E-Journal); 0018-9499 (Print)}, pages = {3631 -- 3633}, year = {1985}, language = {en} } @article{BaumgartnerFidlerWethetal.2008, author = {Baumgartner, Werner and Fidler, Florian and Weth, Agnes and Habbecke, Martin and Jakob, Peter and Butenweg, Christoph and B{\"o}hme, Wolfgang}, title = {Investigating the locomotion of the sandfish in desert sand using NMR-Imaging}, series = {PLOS ONE}, volume = {3}, journal = {PLOS ONE}, number = {10}, publisher = {Plos}, address = {San Francisco, California, US}, issn = {1932-6203}, doi = {10.1371/journal.pone.0003309}, pages = {e3309}, year = {2008}, abstract = {The sandfish (Scincus scincus) is a lizard having the remarkable ability to move through desert sand for significant distances. It is well adapted to living in loose sand by virtue of a combination of morphological and behavioural specializations. We investigated the bodyform of the sandfish using 3D-laserscanning and explored its locomotion in loose desert sand using fast nuclear magnetic resonance (NMR) imaging. The sandfish exhibits an in-plane meandering motion with a frequency of about 3 Hz and an amplitude of about half its body length accompanied by swimming-like (or trotting) movements of its limbs. No torsion of the body was observed, a movement required for a digging-behaviour. Simple calculations based on the Janssen model for granular material related to our findings on bodyform and locomotor behaviour render a local decompaction of the sand surrounding the moving sandfish very likely. Thus the sand locally behaves as a viscous fluid and not as a solid material. In this fluidised sand the sandfish is able to "swim" using its limbs.}, language = {en} } @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{BansalMuellerVieiraetal.2000, author = {Bansal, N. K. and M{\"u}ller, C. and Vieira, M. E. and Faber, Christian and Schwarzer, Klemens}, title = {Thermal performance of a rock bed storage system}, series = {Proceedings : University of Stuttgart, Germany, August 28th until September 1st, 2000 / Terrastock 2000, 8th International Conference on Thermal Energy Storage. Ed.: M. Benner ... - Vol. 1}, journal = {Proceedings : University of Stuttgart, Germany, August 28th until September 1st, 2000 / Terrastock 2000, 8th International Conference on Thermal Energy Storage. Ed.: M. Benner ... - Vol. 1}, publisher = {Inst. f{\"u}r Thermodynamik und W{\"a}rmetechnik}, address = {Stuttgart}, isbn = {3-9805274-1-7}, pages = {433 -- 439}, year = {2000}, language = {en} } @article{BalewskiBrauksiepeHardt1997, author = {Balewski, J. and Brauksiepe, S. and Hardt, Arno}, title = {Threshold measurements at the internal experimental facility COSY-11 / J. Balewski [u.a.]}, series = {Nuclear physics A. Vol. 626, iss. 1-2}, journal = {Nuclear physics A. Vol. 626, iss. 1-2}, issn = {1873-1554 (E-Journal) ; 0375-9474 (Print)}, pages = {85 -- 92}, year = {1997}, language = {en} } @article{ArpshofenPoolSommeretal.1983, author = {Arpshofen, Ingo and Pool, M. J. and Sommer, Ferdinand and Gerling, Ulrich and Predel, Bruno and Schultheiss, Emil}, title = {Determination of the integral mixing enthalpies in the Cu-Pd-Si liquid ternary alloy system at 1600 K}, series = {Zeitschrift f{\"u}r Metallkunde : international journal of materials research and advanced techniques. Bd. 74, H. 1}, journal = {Zeitschrift f{\"u}r Metallkunde : international journal of materials research and advanced techniques. Bd. 74, H. 1}, issn = {0044-3093 ; 0179-4841}, pages = {25 -- 32}, year = {1983}, language = {en} } @article{AlexopoulosHoffschmidt2010, author = {Alexopoulos, Spiros and Hoffschmidt, Bernhard}, title = {Solar tower power plant in Germany and future perspectives of the development of the technology in Greece and Cyprus}, series = {Renewable Energy . 35 (2010), H. 7}, journal = {Renewable Energy . 35 (2010), H. 7}, isbn = {0960-1481}, pages = {1352 -- 1356}, year = {2010}, language = {en} } @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{AlexopoulosBreitbachHoffschmidtetal.2008, author = {Alexopoulos, Spiros and Breitbach, Gerd and Hoffschmidt, Bernhard and Stobbe, P.}, title = {Computational fluid flow of porous resic ceramic filtering modules and optimization of the channel edge form geometry}, series = {Proceedings : April 14 - 18, 2008, Leipzig, Germany / hosted by VDI, Society for Chemical and Process Engineering . Vol 2}, journal = {Proceedings : April 14 - 18, 2008, Leipzig, Germany / hosted by VDI, Society for Chemical and Process Engineering . Vol 2}, publisher = {Filtech Exhibitions}, address = {Meerbusch}, pages = {300 -- 304}, year = {2008}, language = {en} } @article{AlexopoulosBreitbachHoffschmidtetal.2008, author = {Alexopoulos, Spiros and Breitbach, Gerd and Hoffschmidt, Bernhard and Stobbe, P.}, title = {Optimization of the geometry of porous SiC ceramic filtering modules using numerical methods}, series = {Developments in porous, biological and geopolymer ceramics : a collection of papers presented at the 31st International Conference on Advanced Ceramics and Composites, January 21 - 26, 2007, Daytona Beach, Florida ; [papers presented at the Symposium on Porous Ceramics: Novel Developments and Applications] / ed.: Manuel Brito ... Vol. ed.: Jonathan Salem ... The American Ceramics Society}, journal = {Developments in porous, biological and geopolymer ceramics : a collection of papers presented at the 31st International Conference on Advanced Ceramics and Composites, January 21 - 26, 2007, Daytona Beach, Florida ; [papers presented at the Symposium on Porous Ceramics: Novel Developments and Applications] / ed.: Manuel Brito ... Vol. ed.: Jonathan Salem ... The American Ceramics Society}, publisher = {Wiley}, address = {Hoboken, NJ}, isbn = {9780470196403}, pages = {95 -- 104}, year = {2008}, language = {en} } @article{AlebouyehSamamiPieperBreitbachetal.2014, author = {Alebouyeh Samami, Behzad and Pieper, Martin and Breitbach, Gerd and Hodapp, Josef}, title = {Heat production in the windings of the stators of electric machines under stationary condition}, series = {Heat and mass transfer}, volume = {50}, journal = {Heat and mass transfer}, publisher = {Springer}, address = {Heidelberg}, issn = {0947-7411 (Print) ; 1432-1181 (E-Journal)}, doi = {10.1007/s00231-014-1371-8}, pages = {1707 -- 1716}, year = {2014}, abstract = {In electric machines due to high currents and resistive losses (joule heating) heat is produced. To avoid damages by overheating the design of effective cooling systems is required. Therefore the knowledge of heat sources and heat transfer processes is necessary. The purpose of this paper is to illustrate a good and effective calculation method for the temperature analysis based on homogenization techniques. These methods have been applied for the stator windings in a slot of an electric machine consisting of copper wires and resin. The key quantity here is an effective thermal conductivity, which characterizes the heterogeneous wire resin-arrangement inside the stator slot. To illustrate the applicability of the method, the analysis of a simplified, homogenized model is compared with the detailed analysis of temperature behavior inside a slot of an electric machine according to the heat generation. We considered here only the stationary situation. The achieved numerical results are accurate and show that the applied homogenization technique works in practice. Finally the results of simulations for the two cases, the original model of the slot and the homogenized model chosen for the slot (unit cell), are compared to experimental results.}, language = {en} }