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Träfflista för sökning "WFRF:(Johansson V.) ;srt2:(2000-2004)"

Sökning: WFRF:(Johansson V.) > (2000-2004)

  • Resultat 51-60 av 193
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51.
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52.
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53.
  • Greiff, J, et al. (författare)
  • Pion production in dp -> dN pi reactions with deuteron projectiles - art. no. 064002
  • 2000
  • Ingår i: PHYSICAL REVIEW C. - : AMERICAN PHYSICAL SOC. - 0556-2813. ; 6206:6, s. 4002-
  • Tidskriftsartikel (refereegranskat)abstract
    • Kinematically complete events have been studied for the reactions dp-->dp pi (0) and dp-->dn pi (+) at projectile energies between 437 and 559 MeV. The measurement covers a range of pion momenta eta =p(pi ,c.m.)(max)/m(pi)c from near the production thresh
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54.
  • Hedberg, E, et al. (författare)
  • Chemical and physical characterization of emissions from birch wood combustion in a wood stove
  • 2002
  • Ingår i: Atmospheric Environment. - 1352-2310. ; 36:30, s. 4823-4837
  • Tidskriftsartikel (refereegranskat)abstract
    • The purpose of this study was to characterize the emissions of a large number of chemical compounds emitted from birch wood combustion in a wood stove. Birch wood is widely used as fuel in Swedish household appliances. The fuel load was held constant during six experiments. Particles < 2.5 mum diameter were collected and the size distribution of the particles was measured. The results were compared to the size distribution in road traffic emissions. It could be seen that the number distribution differed between the sources. In traffic exhaust, the number of particles maximized at 20 nm, while the number distribution from wood burning ranged from 20 to 300 nm. The ratio K/Ca on particles was found. to be significantly different in wood burning compared to road dust, range 30-330 for the former and 0.8+/-0.15 for the latter. The source profile of common elements emitted from wood-burning differed from that found on particles at a street-level site or in long-distance transported particles. The ratio toluene/benzene in this study was found to be in the range 0.2-0.7, which is much lower than the ratio 3.6+/-0.5 in traffic exhaust emissions. Formaldehyde and acetone were the most abundant compounds among the volatile ketones and aldehydes. The emission factor varied between 180-710mg/kg wood for formaldehyde and 5-1300mg/kg wood for acetone. Of the organic acids analyzed (3,4,5)-trimethoxy benzoic acid was the most abundant compound. Of the PAHs reported, fluorene, phenanthrene, anthracene, fluoranthene and pyrene contribute to more than 70% of the mass of PAH. Of the elements analyzed, K and Si were the most abundant elements, having emission factors of 27 and 9mg/kg wood, respectively. Although fluoranthene has a toxic equivalence factor of 5% of benzo(a)pyrene (B(a)P), it can be seen that the toxic potency of fluoranthene in wood burning emissions is of the same size as B(a)P. This indicates that the relative carcinogenic potency contribution of fluoranthene in wood smoke would be about 40% of B(a)P. (C) 2002 Elsevier Science Ltd. All rights reserved.
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55.
  • Hildebrand, Angelica, et al. (författare)
  • Elastic Neutron Scattering at 96 MeV
  • 2004
  • Ingår i: Proc. Int. Conf. on Nuclear Data for Science and Technology.
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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56.
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57.
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58.
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59.
  • Korzhavyi, Pavel A., 1966-, et al. (författare)
  • Ab Initio Study of Phase Equilibria in TiCx
  • 2002
  • Ingår i: Physical Review Letters. - : The American Physical Society. - 0031-9007 .- 1079-7114. ; 88:1, s. 015505-1-01505-4
  • Tidskriftsartikel (refereegranskat)abstract
    • The phase diagram for the vacancy-ordered structures in the substoichiometric TiCx (x=0.5-1.0) has been established from Monte Carlo simulations with the long-range pair and multisite effective interactions obtained from ab initio calculations. Three ordered superstructures of vacancies (Ti2C, Ti3C2, and Ti6C5) are found to be ground state configurations. Their stability has been verified by full-potential total energy calculations of the fully relaxed structures.
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60.
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