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Sökning: WFRF:(Grad W.)

  • Resultat 1-9 av 9
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1.
  • Ablikim, M., et al. (författare)
  • Measurement of branching fractions for psi(3686) -> gamma eta ', gamma eta, and gamma pi(0)
  • 2017
  • Ingår i: Physical Review D. - : AMER PHYSICAL SOC. - 2470-0010 .- 2470-0029. ; 96:5
  • Tidskriftsartikel (refereegranskat)abstract
    • Using a data sample of 448 x 10(6) psi(3686) events collected with the BESIII detector operating at the BEPCII storage ring, the decays psi(3686) -> gamma eta and psi(3686) -> gamma pi(0) are observed with a statistical significance of 7.3 sigma and 6.7 sigma, respectively. The branching fractions are measured to be B(psi(3686) -> gamma eta) = (0.85 +/- 0.18 +/- 0.05) x 10(-6) and B(psi(3686) ->gamma pi(0)) = (0.95 +/- 0.16 +/- 0.05) x 10(-6). In addition, we measure the branching fraction of psi(3686) -> gamma eta' to be B(psi(3686) -> gamma eta') = (125.1 +/- 2.2 +/- 6.2)x10(-6), which represents an improvement of precision over previous results.
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  • Bock G., Roberts R.G., Kissling E., Achauer A., Alingahi J., Bruneton M., Friedrich W., Grad M. Guterch A., Hjelt S-E., Hyvönen T., Ikonen J-P., Komminaho K., Korja A, Heikkinen P., Kozolovaskaya E., Nevsky M.V., Pavlenkova N., Pedersen H., Plomerova J. (författare)
  • Seismic probing of Archean and Proterozoic Lithosphere in Fennoscandia.
  • 2001
  • Ingår i: EOS Transactions American Geophysical Union. - : American Geophysical Union. ; 82, s. 621,628-629
  • Tidskriftsartikel (refereegranskat)
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4.
  • Bruneton, M., V. Farra, H. A. Pedersen & the SVEKALAPKO Seismic Tomography Working Group, (G. Bock, U. Achauer, A. Alinaghi, J. Ansorge, M. Bruneton, W. Friederich, M. Grad, A. Guterch, S.-E. Hjelt, T. Hyvönen, J.-P. Ikonen, E. Kissling, K. Komminaho, A. (författare)
  • Non-linear surface wave phase velocity inversion based on ray theory.
  • 2002
  • Ingår i: Geophys. J. Int. ; 151, s. 583-596
  • Tidskriftsartikel (refereegranskat)
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5.
  • Franic, Iva, et al. (författare)
  • Climate, host and geography shape insect and fungal communities of trees
  • 2023
  • Ingår i: Scientific Reports. - : Nature Publishing Group. - 2045-2322. ; 13:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Non-native pests, climate change, and their interactions are likely to alter relationships between trees and tree-associated organisms with consequences for forest health. To understand and predict such changes, factors structuring tree-associated communities need to be determined. Here, we analysed the data consisting of records of insects and fungi collected from dormant twigs from 155 tree species at 51 botanical gardens or arboreta in 32 countries. Generalized dissimilarity models revealed similar relative importance of studied climatic, host-related and geographic factors on differences in tree-associated communities. Mean annual temperature, phylogenetic distance between hosts and geographic distance between locations were the major drivers of dissimilarities. The increasing importance of high temperatures on differences in studied communities indicate that climate change could affect tree-associated organisms directly and indirectly through host range shifts. Insect and fungal communities were more similar between closely related vs. distant hosts suggesting that host range shifts may facilitate the emergence of new pests. Moreover, dissimilarities among tree-associated communities increased with geographic distance indicating that human-mediated transport may serve as a pathway of the introductions of new pests. The results of this study highlight the need to limit the establishment of tree pests and increase the resilience of forest ecosystems to changes in climate.
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6.
  • Franic, Iva, et al. (författare)
  • Worldwide diversity of endophytic fungi and insects associated with dormant tree twigs
  • 2022
  • Ingår i: Scientific Data. - : Nature Publishing Group. - 2052-4463. ; 9:1
  • Tidskriftsartikel (refereegranskat)abstract
    • International trade in plants and climate change are two of the main factors causing damaging tree pests (i.e. fungi and insects) to spread into new areas. To mitigate these risks, a large-scale assessment of tree-associated fungi and insects is needed. We present records of endophytic fungi and insects in twigs of 17 angiosperm and gymnosperm genera, from 51 locations in 32 countries worldwide. Endophytic fungi were characterized by high-throughput sequencing of 352 samples from 145 tree species in 28 countries. Insects were reared from 227 samples of 109 tree species in 18 countries and sorted into taxonomic orders and feeding guilds. Herbivorous insects were grouped into morphospecies and were identified using molecular and morphological approaches. This dataset reveals the diversity of tree-associated taxa, as it contains 12,721 fungal Amplicon Sequence Variants and 208 herbivorous insect morphospecies, sampled across broad geographic and climatic gradients and for many tree species. This dataset will facilitate applied and fundamental studies on the distribution of fungal endophytes and insects in trees.
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8.
  • SVEKALAPKO Seismic Tomography Working Group (SSTWG): G. Bock, U. Achauer, A. Alinaghi, J. Ansorge, M. Bruneton, W. Friederich, M. Grad, A. Guterch, S.-E. Hjelt, T. Hyvönen, J.-P. Ikonen, E. Kissling, K. Komminaho, A. Korja, P. Heikkinen, E. Kozlovskaya, M (författare)
  • Seismic probing of Fennoscandian Lithosphere
  • 2002
  • Ingår i: EOS, Trans. Am. geophys. Un.. ; 82:621, s. 628-629
  • Tidskriftsartikel (refereegranskat)
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9.
  • Yliniemi, J, et al. (författare)
  • EUROBRIDGE'95: deep seismic profiling within the East European Craton
  • 2001
  • Ingår i: TECTONOPHYSICS. - : ELSEVIER SCIENCE BV. - 0040-1951. ; 339:1-2, s. 153-175
  • Tidskriftsartikel (refereegranskat)abstract
    • The EUROBRIDGE deep seismic sounding (DSS) profile is a key component of a EUROPROBE project to examine Palaeoproterozoic processes of continental collision and crustal accretion. Its purpose is to establish the deep lithospheric structure of the East Eur
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  • Resultat 1-9 av 9

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