TY  - CHAP
A1  - El Moussaoui, Noureddine
A1  - Kassmi, Khalil
A1  - Alexopoulos, Spiros
A1  - Schwarzer, Klemens
A1  - Chayeb, Hamid
A1  - Bachiri, Najib
T1  - Simulation studies on a new innovative design of a hybrid solar distiller MSDH alimented with a thermal and photovoltaic energy
T2  - Materialstoday: Proceedings
N2  - In this paper, we present the structure, the simulation the operation of a multi-stage, hybrid solar desalination system (MSDH), powered by thermal and photovoltaic (PV) (MSDH) energy. The MSDH system consists of a lower basin, eight horizontal stages, a field of four flat thermal collectors with a total area of 8.4 m2, 3 Kw PV panels and solar batteries. During the day the system is heated by thermal energy, and at night by heating resistors, powered by solar batteries. These batteries are charged by the photovoltaic panels during the day. More specifically, during the day and at night, we analyse the temperature of the stages and the production of distilled water according to the solar irradiation intensity and the electric heating power, supplied by the solar batteries. The simulations were carried out in the meteorological conditions of the winter month (February 2020), presenting intensities of irradiance and ambient temperature reaching 824 W/m2 and 23 °C respectively. The results obtained show that during the day the system is heated by the thermal collectors, the temperature of the stages and the quantity of water produced reach 80 °C and 30 Kg respectively. At night, from 6p.m. the system is heated by the electric energy stored in the batteries, the temperature of the stages and the quantity of water produced reach respectively 90 °C and 104 Kg for an electric heating power of 2 Kw. Moreover, when the electric power varies from 1 Kw to 3 Kw the quantity of water produced varies from 92 Kg to 134 Kg. The analysis of these results and their comparison with conventional solar thermal desalination systems shows a clear improvement both in the heating of the stages, by 10%, and in the quantity of water produced by a factor of 3.
Y1  - 2021
U6  - https://doi.org/10.1016/j.matpr.2021.03.115
SN  - 2214-7853
N1  - The Fourth edition of the International Conference on Materials & Environmental Science (ICMES 2020), virtual conference, November 18-28, 2020, Morocco
VL  - 45
IS  - 8
SP  - 7653
EP  - 7660
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Edip, Kemal
A1  - Garevski, Mihail
A1  - Butenweg, Christoph
A1  - Sheshov, Vlatko
A1  - Bojadjieva, Julijana
A1  - Gjorgjiev, Igor
T1  - New coupled finite-infinite element approach for wave propagation simulation of unbounded soil media
T2  - 2nd European Conference on Earthquake Engineering and Seismology 2014 (2nd ECEES) : joint event of the 15th European Conference on Earthquake Engineering and the 34th General Assembly of the European Seismological Commission : Istanbul, Turkey, 25-29 August 2014 / European Association for Earthquake Engineering (EAEE) ; Vol. 2
Y1  - 2014
SN  - 978-1-5108-1021-1
SP  - 1556
EP  - 1561
PB  - Curran Associates, Inc.
CY  - Red Hook, NY
ER  - 
TY  - JOUR
A1  - Edip, Kemal
A1  - Garevski, Mihail
A1  - Butenweg, Christoph
A1  - Sesov, Vlatko
A1  - Cvetanovska, Julijana
A1  - Gjorgiev, Igor
T1  - Numerical simulation of geotechnical problems by coupled finite and infinite elements
JF  - Journal of civil engineering and architecture
Y1  - 2013
SN  - 1934-7359 (E-Journal)
VL  - 7
IS  - 1
SP  - 68
EP  - 77
PB  - David Publishing
CY  - Libertyville
ER  - 
TY  - CHAP
A1  - Edip, Kemal
A1  - Garevski, Mihail
A1  - Butenweg, Christoph
A1  - Sesov, Vlatko
A1  - Bojadjieva, Julijana
A1  - Gjorgjiev, Igor
T1  - Boundary effects on seismic analysis of multi-storey frames considering soil structure interaction phenomenon
T2  - Seismic design of industrial facilities : proceedings of the International Conference on Seismic Design of Industrial Facilities (SeDIF-Conference) ; [Aachen, 26. - 27. September 2013] / Chair of Structural Statics and Dynamics, RWTH Aachen. Sven Klinkel ..., ed
Y1  - 2014
SN  - 978-3-658-02809-1 (Print) ; 978-3-658-02810-7
U6  - https://doi.org/10.1007/978-3-658-02810-7_47
SP  - 569
EP  - 576
PB  - Springer Vieweg
CY  - Wiesbaden
ER  - 
TY  - JOUR
A1  - Edip, K.
A1  - Sesov, V.
A1  - Butenweg, Christoph
A1  - Bojadjieva, J.
T1  - Development of coupled numerical model for simulation of multiphase soil
JF  - Computers and Geotechnics
N2  - In this paper, a coupled multiphase model considering both non-linearities of water retention curves and solid state modeling is proposed. The solid displacements and the pressures of both water and air phases are unknowns of the proposed model. The finite element method is used to solve the governing differential equations. The proposed method is demonstrated through simulation of seepage test and partially consolidation problem. Then, implementation of the model is done by using hypoplasticity for the solid phase and analyzing the fully saturated triaxial experiments. In integration of the constitutive law error controlling is improved and comparisons done accordingly. In this work, the advantages and limitations of the numerical model are discussed.
Y1  - 2018
U6  - https://doi.org/10.1016/j.compgeo.2017.08.016
SN  - 0266-352X
VL  - 96
SP  - 118
EP  - 131
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Dören, Horst-Peter
T1  - The examination of surfaces of cold rolled wire for gas-shielded arc-welding
T2  - WAI/BISPA joint conference : proceedings. Joint conference of Wire Association International and the British Independent Steel Producers Association (WAI/BISPA) : 26 - 27. 09. 1988, Stratford-upon-Avon
Y1  - 1988
SP  - 102
EP  - 112
CY  - Guilford, Conn.
ER  - 
TY  - CHAP
A1  - Duran Paredes, Ludwin
A1  - Mottaghy, Darius
A1  - Herrmann, Ulf
A1  - Groß, Rolf Fritz
T1  - Online ground temperature and soil moisture monitoring of a shallow geothermal system with non-conventional components
T2  - EGU General Assembly 2020
N2  - We present first results from a newly developed monitoring station for a closed loop geothermal heat pump test installation at our campus, consisting of helix coils and plate heat exchangers, as well as an ice-store system. There are more than 40 temperature sensors and several soil moisture content sensors distributed around the system, allowing a detailed monitoring under different operating conditions.In the view of the modern development of renewable energies along with the newly concepts known as Internet of Things and Industry 4.0 (high-tech strategy from the German government), we created a user-friendly web application, which will connect the things (sensors) with the open network (www). Besides other advantages, this allows a continuous remote monitoring of the data from the numerous sensors at an arbitrary sampling rate.Based on the recorded data, we will also present first results from numerical simulations, taking into account all relevant heat transport processes.The aim is to improve the understanding of these processes and their influence on the thermal behavior of shallow geothermal systems in the unsaturated zone. This will in turn facilitate the prediction of the performance of these systems and therefore yield an improvement in their dimensioning when designing a specific shallow geothermal installation.
Y1  - 2020
N1  - EGU General Assembly 2020, Online, 4–8 May 2020
ER  - 
TY  - JOUR
A1  - Dotzauer, Martin
A1  - Pfeiffer, Diana
A1  - Lauer, Markus
A1  - Pohl, Marcel
A1  - Mauky, Eric
A1  - Bär, Katharina
A1  - Sonnleitner, Matthias
A1  - Zörner, Wilfried
A1  - Hudde, Jessica
A1  - Schwarz, Björn
A1  - Faßauer, Burkhardt
A1  - Dahmen, Markus
A1  - Rieke, Christian
A1  - Herbert, Johannes
A1  - Thrän, Daniela
T1  - How to measure flexibility – Performance indicators for demand driven power generation from biogas plants
JF  - Renewable Energy
Y1  - 2019
U6  - https://doi.org/10.1016/j.renene.2018.10.021
SN  - 0960-1481
SP  - 135
EP  - 146
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - GEN
A1  - Dieringer, Matthias A.
A1  - Renz, Wolfgang
A1  - Lindel, Tomasz
A1  - Seifert, Frank
A1  - Frauenrath, Tobias
A1  - Waiczies, Helmar
A1  - von Knobelsdorff-Brenkhoff, Florian
A1  - Santoro, Davide
A1  - Hoffmann, Werner
A1  - Ittermann, Bernd
A1  - Schulz-Menger, Jeanette
A1  - Niendorf, Thoralf
T1  - 4CH TX/RX Surface Coil for 7T: Design, Optimization and Application for Cardiac Function Imaging
T2  - 2010 ISMRM-ESMRMB joint annual meeting
N2  - Practical impediments of ultra high field cardiovascular MR (CVMR) can be catalogued in exacerbated magnetic field and radio frequency (RF) inhomogeneities, susceptibility and off-resonance effects, conductive and dielectric effects in tissue, and RF power deposition constraints, which all bear the potential to spoil the benefit of CVMR at 7T. Therefore, a four element cardiac transceive surface coil array was developed. Cardiac imaging provided clinically acceptable signal homogeneity with an excellent blood myocardium contrast. Subtle anatomic structures, such as pericardium, mitral and tricuspid valves and their apparatus, papillary muscles, and trabecles were accurately delineated.
Y1  - 2010
SN  - 1545-4428
N1  - ISMRM-ESMRMB joint annual meeting, 1 - 7 May 2010, Stockholm, Sweden
ER  - 
TY  - JOUR
A1  - Dellmann, Sophia Florence
A1  - Glorius, J.
A1  - Litvinov, Yu A.
A1  - Reifarth, R.
A1  - Al-Khasawneh, Kafa
A1  - Aliotta, M.
A1  - Bott, L.
A1  - Brückner, Benjamin
A1  - Bruno, C. G.
A1  - Chen, Ruijiu
A1  - Davinson, T.
A1  - Dickel, T.
A1  - Dillmann, Iris
A1  - Dmytriev, D.
A1  - Erbacher, P.
A1  - Freire-Fernández, D.
A1  - Forstner, Oliver
A1  - Geissel, H.
A1  - Göbel, K.
A1  - Griffin, Christopher J.
A1  - Grisenti, R.
A1  - Gumberidze, Alexandre
A1  - Haettner, Emma
A1  - Hagmann, Siegbert
A1  - Heil, M.
A1  - Heß, R.
A1  - Hillenbrand, P.-M.
A1  - Joseph, R.
A1  - Jurado, B.
A1  - Kozhuharov, Christophor
A1  - Kulikov, I.
A1  - Löher, Bastian
A1  - Langer, Christoph
A1  - Leckenby, Guy
A1  - Lederer-Woods, C.
A1  - Lestinsky, M.
A1  - Litvinov, S. A.
A1  - Lorenz, B. A.
A1  - Lorenz, E.
A1  - Marsh, J.
A1  - Menz, Esther Babette
A1  - Morgenroth, T.
A1  - Petridis, N.
A1  - Pibernat, Jerome
A1  - Popp, U.
A1  - Psaltis, Athanasios
A1  - Sanjari, Shahab
A1  - Scheidenberger, C.
A1  - Sguazzin, M.
A1  - Sidhu, Ragandeep Singh
A1  - Spillmann, Uwe
A1  - Steck, M.
A1  - Stöhlker, T.
A1  - Surzhykov, A.
A1  - Swartz, J. A.
A1  - Törnqvist, H.
A1  - Varga, L.
A1  - Vescovi, Diego
A1  - Weick, H.
A1  - Weigand, M.
A1  - Woods, P.
A1  - Xing, Y.
A1  - Yamaguchi, Taiyo
T1  - Proton capture on stored radioactive ¹¹⁸Te ions
JF  - EPJ Web of Conferences
N2  - Experimental determination of the cross sections of proton capture on radioactive nuclei is extremely difficult. Therefore, it is of substantial interest for the understanding of the production of the p-nuclei. For the first time, a direct measurement of proton-capture cross sections on stored, radioactive ions became possible in an energy range of interest for nuclear astrophysics. The experiment was performed at the Experimental Storage Ring (ESR) at GSI by making use of a sensitive method to measure (p,γ) and (p,n) reactions in inverse kinematics. These reaction channels are of high relevance for the nucleosyn-thesis processes in supernovae, which are among the most violent explosions in the universe and are not yet well understood. The cross section of the ¹¹⁸Te(p,γ) reaction has been measured at energies of 6 MeV/u and 7 MeV/u. The heavy ions interacted with a hydrogen gas jet target. The radiative recombination process of the fully stripped ¹¹⁸Te ions and electrons from the hydrogen target was used as a luminosity monitor. An overview of the experimental method and preliminary results from the ongoing analysis will be presented.
Y1  - 2023
U6  - https://doi.org/10.1051/epjconf/202327911018
SN  - 2100-014X
N1  - Volume 279, 2023. Nuclear Physics in Astrophysics – X (NPA-X 2022).
VL  - 279
IS  - Article Number: 11018
SP  - 1
EP  - 5
PB  - EDP Sciences
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  - CHAP
A1  - Dalguer, Luis A.
A1  - Churilov, Sergey
A1  - Butenweg, Christoph
A1  - Renault, Philippe
A1  - Hyun, An Jun
T1  - Dynamic analysis of a reinforced concrete electrical nuclear building of SMART 2013 project subjected to earthquake excitation using ABAQUS
T2  - Workshop SMART2013 : Paris, France, November 25th - 27th, 2014
Y1  - 2014
SP  - 1
EP  - 12
ER  - 
TY  - CHAP
A1  - Cresser, J. D.
A1  - Häger, J.
A1  - Leuchs, G.
A1  - Rateike, Franz-Matthias
A1  - Walther, H.
T1  - Resonance fluorescence of atoms in strong monochromatic laser fields
T2  - Dissipative systems in quantum optics.  Ed. by Rodolfo Bonifacio. Topics in current physics. Vol. 27
N2  - The investigation of atomic resonance fluorescence has always been of special interest as a means for the determination of atomic parameters. In addition, information on the interaction mechanism between atoms and radiation can be obtained. In the standard fluorescence experiment the frequency distribution of the incident photons is larger than the natural width of the respective transition; as a consequence the correlation time in the photon-atom interaction is determined by the lifetime of the atoms in the excited state. With the development of lasers and especially of tunable dye lasers in recent years it became possible to study the case where the incident radiation has a spectral distribution which is narrower than the natural width. This corresponds to a correlation time of the incoming light wave which is much longer than the excited-state lifetime. In this chapter a survey of experiments on the resonance fluorescence of atoms in monochromatic laser fields will be given.
Y1  - 1982
SN  - 978-3-642-81719-9
U6  - https://doi.org/10.1007/978-3-642-81717-5_3
SP  - 21
EP  - 59
PB  - Springer
CY  - Berlin
ER  - 
TY  - CHAP
A1  - Churilov, Sergej
A1  - Dumova-Jovanoska, Elena
A1  - Butenweg, Christoph
ED  - Adam, Christoph
ED  - Heuer, Rudolf
ED  - Lenhardt, Wolfgang
ED  - Schranz, Christian
T1  - Seismic verification of existing masonry buildings and strengthening with reinforced concrete jackets
T2  - Proceedings - Vienna Congress on Recent Advances in Earthquake Engineering and Structural Dynamics 2013 (VEESD 2013)
N2  - A methodology for assessment, seismic verification and strengthening of existing masonry buildings is presented in this paper. The verification is performed using a calculation model calibrated with the results from ambient vibration measurements. The calibrated model serves as an input for a deformation-based verification procedure based on the Capacity Spectrum Method (CSM). The bearing capacity of the building is calculated from experimental capacity curves of the individual walls idealized with bilinear elastic-perfectly plastic curves. The experimental capacity curves were obtained from in-plane cyclic loading tests on unreinforced and strengthened masonry walls with reinforced concrete jackets. The seismic action is compared with the load-bearing capacity of the building considering non-linear material behavior with its post-peak capacity. The application of the CSM to masonry buildings and the influence of a traditional strengthening method are demonstrated on the example of a public school building in Skopje, Macedonia.
Y1  - 2013
SN  - 978-3-902749-04-8
N1  - Vienna Congress on Recent Advances in Earthquake Engineering and Structural Dynamics, Vienna, Austria, Paper No. 523
13. D-A-CH Tagung ; Vienna, Austria, 29. - 30. August 2013
http://hdl.handle.net/20.500.12188/15830 (Error - Cannot Connect to Server)
ER  - 
TY  - CHAP
A1  - Chudoba, Rostislav
A1  - Butenweg, Christoph
A1  - Pfeiffer, Frank
T1  - Textile reinforced concrete. Part I: Process model for collaborative research and development
T2  - Digital proceedings / IKM 2003, proceedings 16th International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering [Elektronische Ressource : 10. - 12. Juni 2003, Weimar] / Bauhaus-Universität Weimar. Ed.: K. Gürlebeck; L. Hempel; C. Könke
Y1  - 2003
SP  - 1
EP  - 8
PB  - IKM
CY  - Weimar
ER  - 
TY  - JOUR
A1  - Chudoba, Rostislav
A1  - Butenweg, Christoph
A1  - Peiffer, F.
T1  - Technical information system for collaborative material research
JF  - Advances in engineering software
Y1  - 2004
U6  - https://doi.org/10.1016/j.advengsoft.2004.03.021
SN  - 1873-5339 (E-Journal); 0965-9978 (Print)
VL  - Volume 35
IS  - Issue 10-11
SP  - 747
EP  - 756
ER  - 
TY  - JOUR
A1  - Chen, Tao
A1  - Clauser, Christoph
A1  - Marquart, Gabriele
A1  - Willbrand, Karen
A1  - Mottaghy, Darius
T1  - A new upscaling method for fractured porous media
JF  - Advances in Water Resources
Y1  - 2015
U6  - https://doi.org/10.1016/j.advwatres.2015.03.009
SN  - 0309-1708
N1  - Corrigendum 2019:
https://doi.org/10.1016/j.advwatres.2019.01.004
VL  - 80
SP  - 60
EP  - 68
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Caminos, Ricardo Alexander Chico
A1  - Schmitz, Pascal
A1  - Atti, Vikrama
A1  - Mahdi, Zahra
A1  - Teixeira Boura, Cristiano José
A1  - Sattler, Johannes Christoph
A1  - Herrmann, Ulf
A1  - Hilger, Patrick
A1  - Dieckmann, Simon
T1  - Development of a micro heliostat and optical qualification assessment with a 3D laser scanning method
T2  - SOLARPACES 2020
N2  - The Solar-Institut Jülich (SIJ) and the companies Hilger GmbH and Heliokon GmbH from Germany have developed a small-scale cost-effective heliostat, called “micro heliostat”. Micro heliostats can be deployed in small-scale concentrated solar power (CSP) plants to concentrate the sun's radiation for electricity generation, space or domestic water heating or industrial process heat. In contrast to conventional heliostats, the special feature of a micro heliostat is that it consists of dozens of parallel-moving, interconnected, rotatable mirror facets. The mirror facets array is fixed inside a box-shaped module and is protected from weathering and wind forces by a transparent glass cover. The choice of the building materials for the box, tracking mechanism and mirrors is largely dependent on the selected production process and the intended application of the micro heliostat. Special attention was paid to the material of the tracking mechanism as this has a direct influence on the accuracy of the micro heliostat. The choice of materials for the mirror support structure and the tracking mechanism is made in favor of plastic molded parts. A qualification assessment method has been developed by the SIJ in which a 3D laser scanner is used in combination with a coordinate measuring machine (CMM). For the validation of this assessment method, a single mirror facet was scanned and the slope deviation was computed.
KW  - Concentrated solar power
KW  - Electricity generation
KW  - Measuring instruments
KW  - Heliostats
KW  - Global change
Y1  - 2022
SN  - 978-0-7354-4195-8
U6  - https://doi.org/10.1063/5.0086262
SN  - 1551-7616 (online)
SN  - 0094-243X (print)
N1  - SOLARPACES 2020: 26th International Conference on Concentrating Solar Power and Chemical Energy Systems, 28 September–2 October 2020, Freiburg, Germany
IS  - 2445 / 1
PB  - AIP conference proceedings / American Institute of Physics
CY  - Melville, NY
ER  - 
TY  - CHAP
A1  - Cacciatore, Pamela
A1  - Butenweg, Christoph
T1  - Seismic safety of cylindrical granular material steel silos under seismic loading
T2  - Seismic design of industrial facilities 2020
Y1  - 2020
SN  - 978-3-86359-729-0
N1  - 2nd International Conference on Seismic Design of Industrial Facilities (Aachen, Germany, March 4-5, 2020)
SP  - 231
EP  - 244
PB  - Apprimus Verlag
CY  - Aachen
ER  - 
TY  - CHAP
A1  - Böhm, Stefan
A1  - Hellmanns, Mark
A1  - Backes, Andreas
A1  - Dilger, Klaus
T1  - Lock-in thermography based NDT of automotive parts
T2  - Proceedings of the 3rd World Congress on Adhesion and Related Phenomena : WCARP-III, October 15 -18, 2006, Beijing, China
Y1  - 2006
SP  - 382
EP  - 384
PB  - Beijing Adhesion Society of China
CY  - Beijing
ER  -