TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Krüger, D. A1 - Hennecke, K. T1 - Results from parabolic trough systems for process heat at the DLR Cologne / D. Krüger ; B. Hoffschmidt ; K. Hennecke ... JF - Solar thermal 2000 : proceedings of the 10th SolarPACES International Symposium on Solar Thermal Concentrating Technologies, Sydney, Australia, 8 - 10 March 2000 ; part of the Y1 - 2000 N1 - International Symposium on Solar Thermal Concentrating Technologies <10, 2000, Sydney> SP - 113 EP - 120 CY - Sydney ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Fernandez, V. A1 - Konstandopoulus, A. G. T1 - Development of ceramic volumetric receiver technology JF - Forschungsbericht : DLR FB. 10 (2001) Y1 - 2001 SN - 0939-2963 N1 - 2. ISSN: 1434-8454 ; Kölner Sonnenkolloquium <5, 2001, Köln> ; Solar thermal power plants and solar chemical processes : advances and perspectives for international cooperation SP - 51 EP - 61 ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Fend, Thomas A1 - Pitz-Paal, Robert A1 - Reutter, Oliver T1 - Two novel high-porosity materials as volumetric receivers for concentrated solar radiation / Thomas Fend ; Robert Pitz-Paal ; Oliver Reutter ... Bernhard Hoffschmidt JF - Solar energy materials & solar cells. 84 (2004), H. 1 Y1 - 2004 SN - 0927-0248 SP - 291 EP - 304 ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Fend, Thomas A1 - Pitz-Paal, Robert A1 - Reutter, Oliver T1 - Porous materials as open volumetric solar receivers - Experimental determination of thermophysical and heat transfer properties / Thomas Fend ; Bernhard Hoffschmidt ... JF - Energy. 29 (2004), H. 5 Y1 - 2004 SN - 0360-5442 SP - 823 EP - 834 ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Fend, Thomas A1 - Jorgensen, Gary A1 - Küster, Harald T1 - Comparative assessment of solar concentrator materials / Fend, Thomas ; Hoffschmidt, Bernhard ; Jorgensen, Gary ; Küster, Harald ; Krüger, Dirk ; Pitz-Paal, Robert ; Riebrock, Peter ; Riffelmann, Klaus-Jürgen JF - Solar energy. 74 (2003), H. 2 Y1 - 2003 SN - 0038-092X SP - 149 EP - 155 ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Fend, Thomas A1 - Jorgensen, Gary T1 - Comparative assessment of solar concentrator materials / Thomas Fend ; Bernhard Hoffschmidt ; Gary Jorgensen ... JF - Renewable energy for local communities of Europe : (toward Rio+10) ; proceedings / EuroSun 2002, the 4th ISES Europe Solar Congress ; Bologna (Italy), 23 - 26 June 2002 / ISES Italia Y1 - 2002 SN - 88-900893-0-X N1 - Eurosun <4, 2002, Bologna> ; International Solar Energy Society SP - paper_125.pdf CY - Bologna ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Buck, R. A1 - Fend, Thomas T1 - Porous materials as volumetric solar receivers : experimental approach towards a detailed characterisation of instability problems / R. Buck ; T. Fend ; B. Hoffschmidt ... JF - Forschungsbericht : DLR FB. 10 (2001) Y1 - 2001 SN - 0939-2963 N1 - 2. ISSN: 1434-8454 ; Kölner Sonnenkolloquium <5, 2001, Köln> ; Solar thermal power plants and solar chemical processes : advances and perspectives for international cooperation SP - 71 EP - 72 ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Becker, M. A1 - Fend, Thomas T1 - Theoretical and numerical investigation of flow stability in porous materials applied as volumetric solar receivers / M. Becker ; T. Fend ; B. Hoffschmidt ... JF - Solar energy. 80 (2006), H. 10 Y1 - 2006 SN - 0038-092X N1 - Solar Power and Chemical Energy Systems (SolarPACES’04) SP - 1241 EP - 1248 ER - TY - JOUR A1 - Hodel, U. A1 - Orzati, A. A1 - Marso, M. A1 - Homann, O. A1 - Fox, A. A1 - Hart, A. v. d. A1 - Förster, Arnold A1 - Kordos, P. A1 - Lüth, H. T1 - A novel InAlAs/InGaAs layer structure for monolithically integrated photoreceiver JF - Conference Proceedings: 2000 International Conference on Indium Phosphide and related materials Y1 - 2000 SN - 0-7803-6320-5 N1 - International Conference on Indium Phosphide and Related Materials <12, 2000, Williamsburg, Va.> SP - 466 EP - 469 PB - IEEE Service Center CY - Piscataway, NJ ER - TY - JOUR A1 - Henriques, A. A1 - Jurado, B. A1 - Grieser, M. A1 - Denis-Petit, D. A1 - Chiron, T. A1 - Gaudefroy, L. A1 - Glorius, J. A1 - Langer, Christoph A1 - Litvinov, Yu. A. A1 - Mathieu, L. A1 - Meot, V. A1 - Perez-Sanchez, R. A1 - Pibernat, J. A1 - Reifarth, R. A1 - Roig, O. A1 - Thomas, B. A1 - Thomas, B. A. A1 - Thomas, J. C. A1 - Tsekhanovich, I. T1 - Indirect measurements of neutron cross-secti at heavy-ion storage rings JF - Journal of Physics: Conference Series N2 - Cross sections for neutron-induced reactions of short-lived nuclei are essential for nuclear astrophysics since these reactions in the stars are responsible for the production of most heavy elements in the universe. These reactions are also key in applied domains like energy production and medicine. Nevertheless, neutron-induced cross-section measurements can be extremely challenging or even impossible to perform due to the radioactivity of the targets involved. Indirect measurements through the surrogate-reaction method can help to overcome these difficulties. The surrogate-reaction method relies on the use of an alternative reaction that will lead to the formation of the same excited nucleus as in the neutron-induced reaction of interest. The decay probabilities (for fission, neutron and gamma-ray emission) of the nucleus produced via the surrogate reaction allow one to constrain models and the prediction of the desired neutron cross sections. We propose to perform surrogate reaction measurements in inverse kinematics at heavy-ion storage rings, in particular at the CRYRING@ESR of the GSI/FAIR facility. We present the conceptual idea of the most promising setup to measure for the first time simultaneously the fission, neutron and gamma-ray emission probabilities. The results of the first simulations considering the 238U(d,d') reaction are shown, as well as new technical developments that are being carried out towards this set-up. Y1 - 2020 U6 - http://dx.doi.org/10.1088/1742-6596/1668/1/012019 VL - 1668 IS - Art. 012019 PB - IOP CY - Bristol ER - TY - JOUR A1 - Helsper, Christoph A1 - Wiedensohler, A. A1 - Weise, W. A1 - Lütkemeier, E. T1 - Determination of the Bipolar Charge Equilibrium in Pure Gases / Wiedensohler, A. ; Weise, W. ; Helsper, C. ; Lütkemeier, E. JF - Aerosols : formation and reactivity ; proceedings of the second International Aerosol Conference, 22-26 Sept. 1986, Berlin (West) / Gesellschaft für Aerosolforschung (GAeF) ; American Association for Aerosol Research (AAAR) Y1 - 1986 N1 - International Aerosol Conference ; (2, 1986, Berlin (West)) SP - 383 EP - 386 PB - Pergamon Press CY - Oxford [u.a.] ER - TY - JOUR A1 - Helsper, Christoph A1 - Wiedensohler, A. A1 - Lütkemeier, E. A1 - Feldpausch, M. T1 - Investigation on the Bipolar Charge Distribution at Various Gas Conditions / Wiedensohler, A.; Lütkemeier, E.; Feldpausch, M. ; Helsper, C. JF - Journal of Aerosol Science. 17 (1986), H. 3 Y1 - 1986 SN - 0021-8502 SP - 413 EP - 416 ER - TY - JOUR A1 - Helsper, Christoph A1 - Nießner, R. A1 - Rönicke, G. T1 - Application of a Multistep Condensation Nuclei Counter as a Detector for Particle Surface Composition / Nießner, R.; Helsper, C.; Rönicke, G. JF - Aerosols : science, technology, and industr. applications of airborne particles ; proceedings of the 1. Internat. Aerosol Conference held Sept. 17-21, 1984, Minneapolis, Minn., U.S.A / ed.: Benjamin Y. H. Liu Y1 - 1984 SN - 0444009477 N1 - International Aerosol Conference ; (1, 1984, Minneapolis, Minn.) SP - 63 EP - 66 PB - Elsevier CY - New York [u.a.] ER - TY - JOUR A1 - Helsper, Christoph A1 - Nießner, R. T1 - Application of a Multistep Condensation Nuclei Counter as a Detector for Particle Surface Composition / Nießner, R. ; Helsper, C. JF - Journal of Aerosol Science. 16 (1985), H. 3 Y1 - 1985 SN - 0021-8502 SP - 201 EP - 209 ER - TY - JOUR A1 - Helsper, Christoph A1 - Nießner, R. T1 - On the Influence of the Vapour Substance on the Behaviour of an Expansion Type Condensation Nucleus Counter JF - Journal of Aerosol Science. 16 (1985), H. 5 Y1 - 1985 SN - 0021-8502 SP - 457 EP - 461 ER - TY - JOUR A1 - Helsper, Christoph A1 - Mölter, W. A1 - Willemer, W. T1 - Fast and Automated Testing of Filter Media / Mölter, W. ; Helsper, C. ; Willemer, W. JF - FILTECH Conference 1987 : Utrecht, Holland; September 23 - 25 1987 / org. by the Filtration Society , Vol. 1. Y1 - 1987 N1 - Filtech Conference ; (1987, Utrecht) SP - 106 EP - 112 PB - Filtration Society CY - Loughborough ER - TY - JOUR A1 - Helsper, Christoph A1 - Mölter, W. A1 - Löffler, F. A1 - Wadenpohl, C. T1 - Investigations on a New Aerosol Generator for the Production of Carbon Aggregate Particles / Helsper, C. ; Mölter, W. ; Löffler, F. ; Wadenpohl, C. ; Kaufmann, S. ; Wenninger, G. JF - Atmospheric Environment. Part A. General Topics. 27 A (1993), H. 8 Y1 - 1993 SN - 1352-2310 SP - 1271 EP - 1275 ER - TY - JOUR A1 - Helsper, Christoph A1 - Mölter, W. A1 - Kaminski, S. T1 - Fast and Automated Testing of Different Air Filter Media / Mölter, W. ; Helsper, C. ; Kaminski, S. JF - 1. Europäisches Symposium Partikelabscheidung aus Gasen : [PARTEC, Nürnberg, West Germany, 19. - 21. April 1989 ; preprints] = 1. European Symposium Separation of Particles from Gases / [Organisation und Durchführung: NürnbergMesse]. Hrsg. von: Friedrich Löffler Y1 - 1989 N1 - Europäisches Symposion Partikelabscheidung aus Gasen <1, 1989, Nürnberg> SP - 441 EP - 457 PB - NürnbergMesse CY - Nürnberg ER - TY - JOUR A1 - Helsper, Christoph A1 - Mölter, W. A1 - Kaminski, S. T1 - Fast and Automated Testing of Different Air Filter Media / Mölter, W. ; Helsper, C. ; Kaminski, S. JF - Proceedings of the Filtech Conference, Karlsruhe 1989, Vol. 1 Y1 - 1989 SP - 125 EP - 136 PB - Filtration Society CY - Oadby ER - TY - JOUR A1 - Helsper, Christoph A1 - Mölter, W. A1 - Kaminski, S. T1 - Fast, Automated Testing of Different Air Filter Media / Mölter, W. ; Helsper, C. ; Kaminski, S. JF - Filtration and Separation. 29 (1992), H. 1 Y1 - 1992 SN - 0015-1882 SP - 45 EP - 50 ER - TY - JOUR A1 - Helsper, Christoph A1 - Mölter, W. A1 - Haller, P. T1 - Representative Dilution of Aerosols by a Factor of 10,000 JF - Journal of Aerosol Science. 21 (1990), H. Suppl. 1 Y1 - 1990 SN - 0021-8502 SP - 637 EP - 640 ER - TY - JOUR A1 - Helsper, Christoph A1 - Mölter, W. T1 - Characteristics of a Nebulizer with Cyclone Preseparator / Mölter, W. ; Helsper, C. JF - Aerosols, their generation, behaviour and applications. Annual Conference of the Aerosol Society / Aerosol Society (UK) ; 5. Y1 - 1991 SP - 89 EP - 94 CY - Loughborough ER - TY - JOUR A1 - Helsper, Christoph A1 - Mölter, L. T1 - Erzeugung von Prüfaerosolen für die Kalibrierung von optischen Partikelmeßverfahren nach VDI 3491 JF - Technisches Messen. 56 (1989) Y1 - 1989 SN - 0171-8096 N1 - in der Bereichsbibliothek Jülich vorhanden: 63 ZS 008-1989 SP - 229 EP - 234 ER - TY - JOUR A1 - Helsper, Christoph A1 - Lütkemeier, E. A1 - Wiedensohler, A. T1 - Charge Distribution by Unipolar Charging of Small Aerosol Particles / Lütkemeier, E. ; Helsper, C. ; Wiedensohler, A. JF - Aerosols : formation and reactivity ; proceedings of the second International Aerosol Conference, 22-26 Sept. 1986, Berlin (West) / Gesellschaft für Aerosolforschung (GAeF) ; American Association for Aerosol Research (AAAR) Y1 - 1986 N1 - International Aerosol Conference ; (2, 1986, Berlin (West)) SP - 474 EP - 478 PB - Pergamon Press CY - Oxford [u.a.] ER - TY - JOUR A1 - Helsper, Christoph A1 - Horn, Hans-Georg A1 - Schneider, Friedhelm A1 - Wehner, Birgit T1 - Intercomparison of five mobility size spectrometers for measuring atmospheric submicrometer aerosol particles / Helsper, Christoph ; Horn, Hans-Georg ; Schneider, Friedhelm ; Wehner, Birgit ; Wiedensohler, Alfred JF - Gefahrstoffe, Reinhaltung der Luft. Air Quality Control. 68 (2008), H. 11-12 Y1 - 2008 SN - 0949-8036 SP - 475 EP - 481 ER - TY - JOUR A1 - Helsper, Christoph A1 - Fißan, H. J. A1 - Thielen, H. J. T1 - Determination of Particle Size Distributions by Means of an Electrostatic Classifier / Fißan, H. J.; Helsper, C. ; Thielen, H. J. JF - Journal of Aerosol Science. 14 (1983), H. 3 Y1 - 1983 SN - 0021-8502 SP - 354 EP - 357 ER - TY - JOUR A1 - Helsper, Christoph A1 - Fißan, H. J. A1 - Muggli, J. A1 - Scheidweiler, A. T1 - Particle Number Distributions of Aerosols from Test Fires JF - Journal of Aerosol Science. 11 (1980), H. 5-6 Y1 - 1980 SN - 0021-8502 SP - 439 EP - 446 ER - TY - JOUR A1 - Helsper, Christoph A1 - Fißan, H. J. A1 - Muggli, J. A1 - Scheidweiler, A. T1 - Verification of Ionization Chamber Theory JF - Fire Technology. 19 (1983), H. 1 Y1 - 1983 SN - 1572-8099 SP - 14 EP - 21 ER - TY - JOUR A1 - Helsper, Christoph A1 - Fißan, H. J. A1 - Kasper, W. T1 - Calibration of Optical Particle Counters with Respect to Particle Size / Fißan, H. J. ; Helsper, C.; Kasper, W. JF - Particle and Particle Systems Characterization. 1 (1984), H. 1984 Y1 - 1984 SN - 1521-4117 SP - 108 EP - 111 ER - TY - JOUR A1 - Helsper, Christoph A1 - Fißan, H. J. A1 - Kapadi, A. A1 - Liu, B. Y. H. T1 - Data Inversion by Simplex Minimization for the Electrical Aerosol Analyzer JF - Aerosol Science and Technology. 1 (1982), H. 1982 Y1 - 1982 SN - 0278-6826 SP - 136 EP - 146 ER - TY - JOUR A1 - Helsper, Christoph A1 - Fißan, H. J. T1 - Numerical Simulation Studies and Data Reduction for Size Classifying Measurement Techniques / Fißan, H. J.; Helsper, C. JF - Aerosols in science, medicine and technology : conference / Gesellschaft für Aerosolforschung 7. 1979. Y1 - 1979 SP - 199 EP - 205 ER - TY - JOUR A1 - Helsper, Christoph A1 - Fißan, H. J. T1 - Numerical Simulation Studies and Data Reduction for Size Classifying Measurement Techniques / Fißan, H. J.; Helsper, C. JF - Advances in Particle Sampling and Measurement: Proceedings, Daytona Beach, EPA 600/9 80 004, 1980 Y1 - 1980 N1 - Advances in Particle Sampling and Measurement ; (1979.10. : ; Daytona Beach/Fla.) PB - National Technical Information Service CY - Springfield, Va. ER - TY - JOUR A1 - Helsper, Christoph A1 - Fißan, H. J. T1 - Response Characteristic of a Polytec HC-15 Optical Particle Counter JF - Aerosols in science, medicine and technology : Physical and chemical properties of aerosols : Association for Aerosol Research: annual conference. 1980 : Gesellschaft für Aerosolforschung: annual conference. 1980 : Aerosols in science, medicine and technology : Physical and chemical properties of aerosols : Associa-tion for Aerosol Research: annual conference. 1980 : Gesellschaft für Aerosolforschung: annual conference. 1980 : Schmallenberg, 22.10.80 - 24.10.80 Y1 - 1981 N1 - Journal of aerosol science. Volume 0012 ; no 003 SP - 287 EP - 292 PB - Pergamon Pr. CY - Oxford ER - TY - JOUR A1 - Helsper, Christoph A1 - Fißan, H. J. T1 - Calibration of the Polytec HC-15 and HC-70 Optical Particle Counters / Fißan, H. J. ; Helsper, C. JF - Aerosols in the mining and industrial work environments, Vol. 3. Instrumentation, Marple, Virgil A. ; Liu, Benjamin Y. Y1 - 1983 N1 - International Symposium on Aerosols in the Mining and Industrial Work Environment ; (1981.11.01-06 : ; Minneapolis/Minn.) SP - 825 EP - 829 PB - Ann Arbor Science CY - Ann Arbor, Mich. ER - TY - JOUR A1 - Helsper, Christoph A1 - Dreiling, V. A1 - Haller, P. A1 - Kaminski, U. T1 - Intercomparison of Eleven Condensation Nucleus Counters / Dreiling, V. ; Haller, P. ; Helsper, C.; Kaminski, U. ; Plomp, A. ; Raes, F. ; Roth, C. ; Schier, J. ; Schürmann, G. JF - Journal of Aerosol Science. 17 (1986), H. 3 Y1 - 1986 SN - 0021-8502 SP - 565 EP - 570 ER - TY - JOUR A1 - Helsper, Christoph A1 - Bartz, H. A1 - Fißan, H. J. A1 - Kousaka, Y. (u.a.) T1 - Response Characteristics for Four Condensation Nucleus Counters to Particles in the 3 to 50 nm Diameter Range / Bartz, H. ; Fißan, H. J. ; Helsper, C.; Kousaka, Y. ; Okuyama, K. ; Keady, R. Fruin, S. ; McMurry, P. H.; Pui, D. Y. H. ; Stolzenburg, M. R. JF - Journal of Aerosol Science. 16 (1985), H. 5 Y1 - 1985 SN - 0021-8502 SP - 443 EP - 456 ER - TY - JOUR A1 - Helsper, Christoph T1 - Evaluation of Particle Size Distributions by Means of Particle Counters / Fißan, H. J. ; Helsper, C. JF - Proceedings of the First Workshop of Particulate Control : 16. - 17. March 1978, Kernforschung-sanlage Jülich GmbH / prepared by U.S. Environmental Protection Agency, Off. of Research and Development, Washington, D.C, 1979, Y1 - 1979 N1 - Workshop of Particulate Control ; (1, 1978, Jülich); Berichte der Kernforschungsanlage Jülich Conferences ; 28 PB - Zentralbibliothek d. Kernforschungsanlage Jülich [in Komm.] CY - Jülich ER - TY - JOUR A1 - Helsper, Christoph T1 - Measurement Techniques For Ultrafine Particles JF - Ultrafine aerosols. Properties and behaviour. Proceedings of the 1. International Workshop on Ultrafine Aerosols of the Sonderforschungsbereich 209 'Stoff- und Energietransport in Aerosolen' -'Mass and energy transfer in aerosols'-, held at the Univ. of Duisburg on Sept. 29, 1986 Y1 - 1986 N1 - International Workshop on Ultrafine Aerosols ; (01) CY - Duisburg ER - TY - JOUR A1 - Hellmanns, Mark A1 - Böhm, Stefan A1 - Dilger, Klaus T1 - Manual applications of adhesives JF - Journal of adhesion and interface Y1 - 2006 VL - Vol. 7 IS - No. 4 SP - 24 EP - 27 ER - TY - JOUR A1 - Heel, Mareike van A1 - Dikta, Gerhard A1 - Braekers, Roel T1 - Bootstrap based goodness‑of‑fit tests for binary multivariate regression models JF - Journal of the Korean Statistical Society N2 - We consider a binary multivariate regression model where the conditional expectation of a binary variable given a higher-dimensional input variable belongs to a parametric family. Based on this, we introduce a model-based bootstrap (MBB) for higher-dimensional input variables. This test can be used to check whether a sequence of independent and identically distributed observations belongs to such a parametric family. The approach is based on the empirical residual process introduced by Stute (Ann Statist 25:613–641, 1997). In contrast to Stute and Zhu’s approach (2002) Stute & Zhu (Scandinavian J Statist 29:535–545, 2002), a transformation is not required. Thus, any problems associated with non-parametric regression estimation are avoided. As a result, the MBB method is much easier for users to implement. To illustrate the power of the MBB based tests, a small simulation study is performed. Compared to the approach of Stute & Zhu (Scandinavian J Statist 29:535–545, 2002), the simulations indicate a slightly improved power of the MBB based method. Finally, both methods are applied to a real data set. Y1 - 2021 U6 - http://dx.doi.org/10.1007/s42952-021-00142-4 SN - 2005-2863 (Online) SN - 1226-3192 (Print) N1 - Corresponding author: Mareike van Heel VL - 51 PB - Springer Nature CY - Singapur ER - TY - JOUR A1 - Hardt, Arno A1 - Martin, S. A1 - Meißburger, J. A1 - Retz, R. A1 - Wimmer, J. T1 - The cryopump system of the QQDDQ magnet spectrometer BIG KARL JF - Vacuum N2 - 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. Y1 - 1978 U6 - http://dx.doi.org/10.1016/S0042-207X(78)80026-8 SN - 1879-2715 (E-Journal); 0042-207X (Print) VL - 28 IS - 10-11 SP - 483 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Hardt, Arno A1 - Köhler, M. A1 - Müller, K. D. A1 - Stoff, H. T1 - A two-dimensional position sensitive charged-particle detector for the magnetic spectrograph "BIG KARL" of the Jülich Cyclotron "JULIC". M. Köhler, K. D. Müller, H. Stoff, M. Teske, G. P. A. Berg, A. Hardt, S. Martin, C. Mayer-Böricke , J. Meißburger JF - Nuclear Instruments and Methods. 75 (1980), H. 2-3 Y1 - 1980 SN - 0029-554X SP - 357 EP - 362 ER - TY - JOUR A1 - Hardt, Arno A1 - Bisplinghoff, J. A1 - Ernst, J. A1 - Löhr, R. T1 - On-line apparatus BANDIT for half-life determination of short-lived neutron deficient isotopes. A. Hardt, J. Bisplinghoff, J. Ernst, R. Löhr, H. Machner, T . Mayer-Kuckuk JF - Nuclear Instruments and Methods. 143 (1977), H. 3 Y1 - 1977 SN - 0029-554X SP - 519 EP - 523 ER - TY - JOUR A1 - Göttsche, Joachim A1 - Alexopoulos, Spiros A1 - Dümmler, Andreas A1 - Maddineni, S. K. T1 - Multi-Mirror Array Calculations With Optical Error N2 - The optical performance of a 2-axis solar concentrator was simulated with the COMSOL Multiphysics® software. The concentrator consists of a mirror array, which was created using the application builder. The mirror facets are preconfigured to form a focal point. During tracking all mirrors are moved simultaneously in a coupled mode by 2 motors in two axes, in order to keep the system in focus with the moving sun. Optical errors on each reflecting surface were implemented in combination with the solar angular cone of ± 4.65 mrad. As a result, the intercept factor of solar radiation that is available to the receiver was calculated as a function of the transversal and longitudinal angles of incidence. In addition, the intensity distribution on the receiver plane was calculated as a function of the incidence angles. KW - solar process heat KW - concentrating collector KW - raytracing KW - point-focussing system Y1 - 2019 SP - 1 EP - 6 ER - TY - JOUR A1 - Gömmel, Andreas A1 - Butenweg, Christoph A1 - Bolender, Katrin A1 - Grunendahl, Arno T1 - A muscle controlled finite-element model of laryngeal abduction and adduction JF - Computer methods in biomechanics and biomedical engineering Y1 - 2007 SN - 1476-8259 (E-Journal); 1025-5842 (Print) VL - Volume 10 IS - Issue 5 SP - 377 EP - 388 ER - TY - JOUR A1 - Giresini, Linda A1 - Sassu, Mauro A1 - Butenweg, Christoph A1 - Alecci, Valerio A1 - De Stefano, Mario T1 - Vault macro-element with equivalent trusses in global seismic analyses JF - Earthquakes and Structures N2 - This paper proposes a quick and simplified method to describe masonry vaults in global seismic analyses of buildings. An equivalent macro-element constituted by a set of six trusses, two for each transverse, longitudinal and diagonal direction, is introduced. The equivalent trusses, whose stiffness is calculated by fully modeled vaults of different geometry, mechanical properties and boundary conditions, simulate the vault in both global analysis and local analysis, such as kinematic or rocking approaches. A parametric study was carried out to investigate the influence of geometrical characteristics and mechanical features on the equivalent stiffness values. The method was numerically validated by performing modal and transient analysis on a three naves-church in the elastic range. Vibration modes and displacement time-histories were compared showing satisfying agreement between the complete and the simplified models. This procedure is particularly useful in engineering practice because it allows to assess, in a simplified way, the effectiveness of strengthening interventions for reducing horizontal relative displacements between vault supports. KW - vault KW - macro-element KW - equivalent stiffness KW - truss KW - churches Y1 - 2017 U6 - http://dx.doi.org/10.12989/eas.2017.12.4.409 SN - 2092-7614 (Print) SN - 2092-7622 (Online) VL - 12 IS - 4 SP - 409 EP - 423 PB - Techno-Press CY - Taejŏn ER - TY - JOUR A1 - Gerling, Ulrich A1 - Pool, M. J. A1 - Predel, Bruno T1 - A contribution to the associate model for binary liquid alloys = Ein Beitrag zum Assoziat-Modell für binäre flüssige Legierungen JF - Zeitschrift für Metallkunde : international journal of materials research and advanced techniques. Bd. 74, H. 9 Y1 - 1983 SN - 0044-3093 ; 0179-4841 SP - 616 EP - 619 ER - TY - JOUR A1 - Geimer, Konstantin A1 - Sauerborn, Markus A1 - Hoffschmidt, Bernhard A1 - Schmitz, Mark A1 - Göttsche, Joachim T1 - Test Facility for Absorber Specimens of Solar Tower Power Plants JF - Advances in Science and Technology. 74 (2010) Y1 - 2010 N1 - 5th Forum on New Materials : CIMTEC 2010, Montecatini Terme, Italy 13-18 June 2010. Part C SP - 266 EP - 271 ER - TY - JOUR A1 - Förster, Arnold A1 - Zettler, J.-T. A1 - Mikkelsen, H. A1 - Leo, K. T1 - Modulated ellipsometric measurements and transfer-matrix calculation of the field-dependent dielectric function of a multiple quantum well / J.-Th. Zettler ; H. Mikkelsen ; K. Leo ... A. Förster JF - Physical Review B . 46 (1992), H. 24 Y1 - 1992 SN - 0163-1829 N1 - 2. ISSN: 1098-0121 ; ISSN der E-Ausg.: 1095-3795 SP - 15955 EP - 15962 ER - TY - JOUR A1 - Förster, Arnold A1 - Zamdmer, N. A1 - Hu, Qing A1 - Verghese, S. T1 - Mode-Discriminating Photoconductor and Coplanar Wave-Guide Circuits for Picosecond Sampling. Zamdmer, N.; Hu, Qing ; Verghese, S. ; Förster, A. JF - Applied Physics Letters. 74 (1999), H. 7 Y1 - 1999 SN - 1077-3118 SP - 1039 EP - 1041 ER -