@inproceedings{HardtAbdelGawadMartinetal.1975, author = {Hardt, Arno and Abdel-Gawad, A and Martin, S. and Reich, J.}, title = {Design procedures for the Juelich QQDDQ high resolution spectrometer}, series = {Proceedings, 5th International Conference on Magnet Technology (MT-5) : Rome, Italy, April 21-25, 1975}, booktitle = {Proceedings, 5th International Conference on Magnet Technology (MT-5) : Rome, Italy, April 21-25, 1975}, pages = {45 -- 51}, year = {1975}, language = {en} } @article{MelissOesterwindVoss1975, author = {Meliß, Michael and Oesterwind, Dieter and Voß, Alfred}, title = {Non-nuclear and non-fossil energy resources and their possibilities for future power generation}, series = {Kerntechnik}, volume = {17}, journal = {Kerntechnik}, number = {7}, publisher = {De Gruyter}, address = {Berlin}, issn = {0932-3902}, doi = {10.18419/opus-8093}, pages = {301 -- 306}, year = {1975}, abstract = {It must be stressed that the assessment of the exploitation possibilities of the energy resources discussed in this paper requires further studies. With this proviso, the situation can be provisionally summarised as follows: The total potential of known geothermal steam sources is only 64 GW. Geothermal energy could therefore only make a significant contribution to covering the worldwide power needs if we succeed in exploiting dry geothermal reservoirs. Exploitation of tidal energy is limited to a few geographically favourable locations. The power generation potential at these locations is only about 64 GW. An important drawback of tidal power is discontinuous power generation. Large scale exploitation of wind, wave and glacier energy, and of ocean heat, requires solution of a number of technological problems. The environmental effects of exploitation of these energy resources are to some extent of a qualitatively different nature from those of operation of fossil-fuel-fired and of nuclear power plants. The scanty knowledge in this area often results in these effects being underestimated. In any case, however, it would be deliberately misleading to postulate that any form of power generation is possible without some detrimental effects on the environment. It may be stated in conclusion that, owing to their small potential or to the as yet insufficiently advanced technological development, none of the energy resources discussed in this paper can make a significant contribution to the solution of middle-term energy supply problems, i.e., to a rapid replacement of mineral oil and natural gas.}, language = {en} } @article{HardtBisplinghoffErnstetal.1977, author = {Hardt, Arno and Bisplinghoff, J. and Ernst, J. and L{\"o}hr, R.}, title = {On-line apparatus BANDIT for half-life determination of short-lived neutron deficient isotopes. A. Hardt, J. Bisplinghoff, J. Ernst, R. L{\"o}hr, H. Machner, T . Mayer-Kuckuk}, series = {Nuclear Instruments and Methods. 143 (1977), H. 3}, journal = {Nuclear Instruments and Methods. 143 (1977), H. 3}, isbn = {0029-554X}, pages = {519 -- 523}, year = {1977}, language = {en} } @incollection{HelsperFissanFranzen1978, author = {Helsper, Christoph and Fissan, H. J. and Franzen, H.}, title = {Particle Size Distributions of Combustion Aerosols}, series = {Atmospheric Pollution 1978 : Proceedings of the 13th International Colloquium; 25-28 April 1978; Paris, France; Edited by Michel M. Benarie}, booktitle = {Atmospheric Pollution 1978 : Proceedings of the 13th International Colloquium; 25-28 April 1978; Paris, France; Edited by Michel M. Benarie}, editor = {Benarie, Michel M.}, publisher = {Elsevier}, address = {Amsterdam}, isbn = {0-444-41691-9}, doi = {10.1016/S0166-1116(08)71583-8}, pages = {263 -- 266}, year = {1978}, abstract = {It has been observed that carcinogenic polycyclic aromatic hydrocarbons (PAH) are present in the atmosphere. Combustion processes are considered the most important sources for PAH. Among these, the burning of coal produces the highest emission, but in cities with high traffic density and low meteorological exchange activities, vehicle emissions determine the immission situation, especially in narrow streets. For estimating the potential health effects caused by PAH, it is sufficient to characterize the emission of PAH with respect to their physical state, concentrations, and, as far as the particulate phase is concerned, size distribution. The size distribution is important for transport phenomena, inhalation, and deposition in the respiratory tract. These parameters mainly depend on the combustion system, on system operating conditions, on the exhaust system, and on exhaust cooling conditions. At exhaust-gas temperatures in the range of ambient air temperatures, almost the whole emission of PAH is made up of particulate matter.}, 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{Helsper1979, author = {Helsper, Christoph}, title = {Evaluation of Particle Size Distributions by Means of Particle Counters / Fißan, H. J. ; Helsper, C.}, series = {Proceedings of the First Workshop of Particulate Control : 16. - 17. March 1978, Kernforschung-sanlage J{\"u}lich GmbH / prepared by U.S. Environmental Protection Agency, Off. of Research and Development, Washington, D.C, 1979,}, journal = {Proceedings of the First Workshop of Particulate Control : 16. - 17. March 1978, Kernforschung-sanlage J{\"u}lich GmbH / prepared by U.S. Environmental Protection Agency, Off. of Research and Development, Washington, D.C, 1979,}, publisher = {Zentralbibliothek d. Kernforschungsanlage J{\"u}lich [in Komm.]}, address = {J{\"u}lich}, pages = {495 S.: Ill., graph. Darst.}, year = {1979}, language = {en} } @article{HelsperFissan1979, author = {Helsper, Christoph and Fißan, H. J.}, title = {Numerical Simulation Studies and Data Reduction for Size Classifying Measurement Techniques / Fißan, H. J.; Helsper, C.}, series = {Aerosols in science, medicine and technology : conference / Gesellschaft f{\"u}r Aerosolforschung 7. 1979.}, journal = {Aerosols in science, medicine and technology : conference / Gesellschaft f{\"u}r Aerosolforschung 7. 1979.}, pages = {199 -- 205}, year = {1979}, language = {en} } @inproceedings{MartinBergHardtetal.1979, author = {Martin, S. and Berg, G. and Hardt, Arno and H{\"u}rlimann, W. and K{\"o}hler, M. and Meißberger, J. and Sagefka, T. and Schult, O. W. B.}, title = {First experience with the magnet spectrometer 'BIG KARL'}, series = {Use of magnetic spectrometers in nuclear physics : proceedings of the Daresbury study weekend 10 - 11 March 1979}, booktitle = {Use of magnetic spectrometers in nuclear physics : proceedings of the Daresbury study weekend 10 - 11 March 1979}, editor = {Sanderson, N. E.}, publisher = {Daresbury Lab.}, address = {Daresbury}, pages = {38 -- 42}, year = {1979}, language = {en} } @article{HelsperFissan1980, author = {Helsper, Christoph and Fißan, H. J.}, title = {Numerical Simulation Studies and Data Reduction for Size Classifying Measurement Techniques / Fißan, H. J.; Helsper, C.}, series = {Advances in Particle Sampling and Measurement: Proceedings, Daytona Beach, EPA 600/9 80 004, 1980}, journal = {Advances in Particle Sampling and Measurement: Proceedings, Daytona Beach, EPA 600/9 80 004, 1980}, publisher = {National Technical Information Service}, address = {Springfield, Va.}, pages = {VII, 409 S.}, year = {1980}, language = {en} } @article{HelsperFissanMugglietal.1980, author = {Helsper, Christoph and Fißan, H. J. and Muggli, J. and Scheidweiler, A.}, title = {Particle Number Distributions of Aerosols from Test Fires}, series = {Journal of Aerosol Science. 11 (1980), H. 5-6}, journal = {Journal of Aerosol Science. 11 (1980), H. 5-6}, isbn = {0021-8502}, pages = {439 -- 446}, year = {1980}, language = {en} }