@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{HardtMartinMeissburgeretal.1978, author = {Hardt, Arno and Martin, S. and Meißburger, J. and Retz, R. and Wimmer, J.}, title = {The cryopump system of the QQDDQ magnet spectrometer BIG KARL}, series = {Vacuum}, volume = {28}, journal = {Vacuum}, number = {10-11}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1879-2715 (E-Journal); 0042-207X (Print)}, doi = {10.1016/S0042-207X(78)80026-8}, pages = {483}, year = {1978}, abstract = {Cryopumps without liquid nitrogen shielding are used to provide a vacuum of 10-6 torr in the spectrometer. The vacuum system is subdivided in three sections that can be separated by valves. The first section (scattering chamber) has a volume of 60 l, two rotation transmissions with 35 cm dia and a sliding seal that allows a rotation of 160° without deteriorating the vacuum. The second section includes the vacuum chambers inside the magnets with 6 × 80 cm cross-section and a length of 1200 cm. The third section (detector box) has a volume of 4300 l and contains a moveable detector system. The gas inside the detector with a pressure of 760 torr is separated from the vacuum by a 15 μm mylar foil with an area of 300 cm2. The detector box can be valved off by a valve with the dimension of 10 × 100 cm. The layout of system is given. The instrumentation and the interlock system are described. First experiences with this system are presented.}, language = {en} } @article{MartinBergHackeretal.1985, author = {Martin, S. A. and Berg, G. P. A. and Hacker, U. and Hardt, Arno and K{\"o}hler, M. and Meißburger, J. and Osterfeld, F. and Prasuhn, D. and Riepe, G. and Rogge, M. and Schult, O. W. B. and Speth, J. and Turek, P. and Gaul, G. and Hagedoorn, H. and Heide, J. A. van der and Hinterberger, F. and Huber, M. and Jahn, R. and Mayer-Kuckuk, T. and Poth, H. and Paetz gen. Schieck, H.}, title = {COSY - a cooler synchrotron and storage ring}, 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 = {2694 -- 2696}, year = {1985}, 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{MakovickaGaertnerHardtetal.1997, author = {Makovicka, C. and G{\"a}rtner, G. and Hardt, Arno and Hermann, W. and Wiechert, D. U.}, title = {Impregnated cathode surface investigations by SFM/STM and SEM/EDX}, series = {Applied surface science. Vol. 111}, journal = {Applied surface science. Vol. 111}, issn = {1873-5584 (E-Journal); 0169-4332 (Print)}, pages = {70 -- 75}, year = {1997}, language = {en} } @article{SchultSistemichHardt1995, author = {Schult, O. W. B. and Sistemich, K. and Hardt, Arno}, title = {Plans for investigations of subthreshold K+ production in p+A collisions / O. W. B. Schult [u.a.]}, series = {Nuclear Physics A. Vol. 583}, journal = {Nuclear Physics A. Vol. 583}, issn = {1873-1554 (E-journal); 0375-9474 (Print)}, pages = {629 -- 632}, year = {1995}, 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{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{DoerenWernicke1987, author = {D{\"o}ren, Horst-Peter and Wernicke, K.}, title = {Slijtvaste lagen door oplassen met plasmapoeder}, series = {Metaal en Kunststof: MK. Universeel weekblad voor fabriek en werkplaats. 24 (1987), Nr. 23}, journal = {Metaal en Kunststof: MK. Universeel weekblad voor fabriek en werkplaats. 24 (1987), Nr. 23}, issn = {0026-0460}, pages = {76 -- 79}, year = {1987}, language = {nl} } @article{HaissigDoerenWilmes1981, author = {Haissig, Manfred and D{\"o}ren, Horst-Peter and Wilmes, S.}, title = {Stand der Entwicklung des Horizontal-Stranggießens von Edelstahl bei der B{\"o}hler AG}, series = {Stahl und Eisen. Zeitschrift f{\"u}r die Herstellung und Verarbeitung von Eisen und Stahl. Hrsg.: Verein Deutscher Eisenh{\"u}ttenleute (VDEh) ; Wirtschaftsvereinigung Stahl. 101 (1981), H. 6}, journal = {Stahl und Eisen. Zeitschrift f{\"u}r die Herstellung und Verarbeitung von Eisen und Stahl. Hrsg.: Verein Deutscher Eisenh{\"u}ttenleute (VDEh) ; Wirtschaftsvereinigung Stahl. 101 (1981), H. 6}, issn = {0340-4803}, pages = {383 -- 390}, year = {1981}, language = {de} } @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{Pieper2011, author = {Pieper, Martin}, title = {Multiobjective optimization with expensive objectives applied to a thermodynamic material design problem}, series = {Proceedings in applied mathematics and mechanics : PAMM. 11 (2011), H. 1}, journal = {Proceedings in applied mathematics and mechanics : PAMM. 11 (2011), H. 1}, publisher = {Wiley}, address = {Weinheim}, isbn = {1617-7061}, pages = {733 -- 734}, year = {2011}, language = {en} } @article{Pieper2008, author = {Pieper, Martin}, title = {Nonlinear integral equations for an inverse electromagnetic scattering problem}, series = {Journal of Physics Conference Series. 124 (2008)}, journal = {Journal of Physics Conference Series. 124 (2008)}, isbn = {1742-6596}, year = {2008}, language = {en} } @article{PieperIvanyshyn2008, author = {Pieper, Martin and Ivanyshyn, Olha}, title = {Nonlinear integral equations for a 3D inverse acoustic scattering problem : abstract / O. Ivanyshyn and M. Pieper}, year = {2008}, language = {en} } @article{EweKleinPieperetal.2009, author = {Ewe, Hendrik and Klein, Peter and Pieper, Martin and F{\"u}ldner, G.}, title = {Heat conductivity in sintered aluminium fibers}, series = {Cellular metals for structural and functional applications : CELLMET 2008 ; proceedings of the International Symposium on Cellular Metals for Structural and Functional Applications held October 8 - 10, 2008 in Dresden, Germany / ed. by G{\"u}nter Stephani}, journal = {Cellular metals for structural and functional applications : CELLMET 2008 ; proceedings of the International Symposium on Cellular Metals for Structural and Functional Applications held October 8 - 10, 2008 in Dresden, Germany / ed. by G{\"u}nter Stephani}, publisher = {Fraunhofer IFAM}, address = {Dresden}, pages = {187 -- 193}, year = {2009}, language = {en} } @article{PieperKlein2011, author = {Pieper, Martin and Klein, Peter}, title = {A simple and accurate numerical network flow model for bionic micro heat exchangers}, series = {Heat mass transfer}, volume = {47}, journal = {Heat mass transfer}, number = {5}, publisher = {Springer}, address = {Berlin}, isbn = {0947-7411}, pages = {491 -- 503}, year = {2011}, language = {en} } @article{PieperKlein2012, author = {Pieper, Martin and Klein, Peter}, title = {Application of simple, periodic homogenization techniques to non-linear heat conduction problems in non-periodic, porous media}, series = {Heat mass transfer}, volume = {48}, journal = {Heat mass transfer}, number = {2}, publisher = {Springer}, address = {Berlin}, issn = {0947-7411}, doi = {10.1007/s00231-011-0879-4}, pages = {291 -- 300}, year = {2012}, abstract = {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.}, language = {en} } @article{PieperKlein2010, author = {Pieper, Martin and Klein, Peter}, title = {Numerical solution of the heat equation with non-linear, time derivative-dependent source term}, series = {International Journal for Numerical Methods in Engineering}, volume = {84}, journal = {International Journal for Numerical Methods in Engineering}, number = {10}, publisher = {Wiley}, address = {Chichester}, issn = {0029-5981}, doi = {10.1002/nme.2937}, pages = {1205 -- 1221}, year = {2010}, abstract = {The mathematical modeling of heat conduction with adsorption effects in coated metal structures yields the heat equation with piecewise smooth coefficients and a new kind of source term. This term is special, because it is non-linear and furthermore depends on a time derivative. In our approach we reformulated this as a new problem for the usual heat equation, without source term but with a new non-linear coefficient. We gave an existence and uniqueness proof for the weak solution of the reformulated problem. To obtain a numerical solution, we developed a semi-implicit and a fully implicit finite volume method. We compared these two methods theoretically as well as numerically. Finally, as practical application, we simulated the heat conduction in coated aluminum fibers with adsorption in the zeolite coating. Copyright © 2010 John Wiley \& Sons, Ltd.}, language = {en} } @article{Pieper2009, author = {Pieper, Martin}, title = {Vector hyperinterpolation on the sphere}, series = {Journal of approximation theory. 156 (2009), H. 2}, journal = {Journal of approximation theory. 156 (2009), H. 2}, isbn = {0021-9045}, pages = {173 -- 186}, year = {2009}, language = {en} } @article{KernScheibe2011, author = {Kern, Alexander and Scheibe, Klaus}, title = {Die neuen internationalen Blitzschutz-Standards der Reihe IEC 62305:2010 : {\"U}berblick und Stand der Umsetzung in die nationale Normenreihe DIN EN 62305}, 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 = {7 -- 12}, year = {2011}, language = {de} }