Zobrazeno 1 - 10
of 677
pro vyhledávání: '"P. E. Ahlberg"'
Publikováno v:
PeerJ, Vol 12, p e18519 (2024)
A recent article by DePalma et al. reported that the season of the End-Cretaceous mass extinction was confined to spring/summer on the basis of stable isotope analyses and supplementary observations. An independent study that was concurrently under r
Externí odkaz:
https://doaj.org/article/bccd7a87e2f54a32b96f107b06b98fec
Autor:
E. Ahlberg, S. Ausmeel, L. Nilsson, M. Spanne, J. Pauraite, J. Klenø Nøjgaard, M. Bertò, H. Skov, P. Roldin, A. Kristensson, E. Swietlicki, A. Eriksson
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 3051-3064 (2023)
Soot, or black carbon (BC), aerosol is a major climate forcer with severe health effects. The impacts depend strongly on particle number concentration, size and mixing state. This work reports on two field campaigns at nearby urban and rural sites, 6
Externí odkaz:
https://doaj.org/article/c7862d44792b472089b71205b98553c0
Autor:
Vincent Dupret, Hannah M Byrne, Nélia Castro, Øyvind Hammer, Kenneth T Higgs, Johan A Long, Grzegorz Niedźwiedzki, Martin Qvarnström, Iwan Stössel, Per E Ahlberg
Publikováno v:
PLoS ONE, Vol 18, Iss 2, p e0280208 (2023)
Material of the antiarch placoderm Bothriolepis from the middle Givetian of the Valentia Slate Formation in Iveragh Peninsula, Ireland, is described and attributed to a new species, B. dairbhrensis sp. nov. A revision of the genus Bothriolepis is pro
Externí odkaz:
https://doaj.org/article/a56c283a583f4b7e9fde452e0b86dc63
Autor:
Robert W. Gess, Per E. Ahlberg
Publikováno v:
PLoS ONE, Vol 18, Iss 2 (2023)
We describe the largest bony fish in the Late Devonian (late Famennian) fossil assemblage from Waterloo Farm near Makhanda/Grahamstown, South Africa. It is a giant member of the extinct clade Tristichopteridae (Sarcopterygii: Tetrapodomorpha) and mos
Externí odkaz:
https://doaj.org/article/e9700c97f5b44433a610168089283a94
Autor:
Alice M Clement, Tom J Challands, Richard Cloutier, Laurent Houle, Per E Ahlberg, Shaun P Collin, John A Long
Publikováno v:
eLife, Vol 11 (2022)
The lobe-finned fish, lungfish (Dipnoi, Sarcoptergii), have persisted for ~400 million years from the Devonian Period to present day. The evolution of their dermal skull and dentition is relatively well understood, but this is not the case for the ce
Externí odkaz:
https://doaj.org/article/fe0fbc43c02249cabc36f012098fb7b4
Publikováno v:
Frontiers in Ecology and Evolution, Vol 10 (2022)
The spiracular region, comprising the hyomandibular pouch together with the mandibular and hyoid arches, has a complex evolutionary history. In living vertebrates, the embryonic hyomandibular pouch may disappear in the adult, develop into a small ope
Externí odkaz:
https://doaj.org/article/ae01abcd800e48e7bf0bb4afd666c910
Autor:
P. Laj, A. Bigi, C. Rose, E. Andrews, C. Lund Myhre, M. Collaud Coen, Y. Lin, A. Wiedensohler, M. Schulz, J. A. Ogren, M. Fiebig, J. Gliß, A. Mortier, M. Pandolfi, T. Petäja, S.-W. Kim, W. Aas, J.-P. Putaud, O. Mayol-Bracero, M. Keywood, L. Labrador, P. Aalto, E. Ahlberg, L. Alados Arboledas, A. Alastuey, M. Andrade, B. Artíñano, S. Ausmeel, T. Arsov, E. Asmi, J. Backman, U. Baltensperger, S. Bastian, O. Bath, J. P. Beukes, B. T. Brem, N. Bukowiecki, S. Conil, C. Couret, D. Day, W. Dayantolis, A. Degorska, K. Eleftheriadis, P. Fetfatzis, O. Favez, H. Flentje, M. I. Gini, A. Gregorič, M. Gysel-Beer, A. G. Hallar, J. Hand, A. Hoffer, C. Hueglin, R. K. Hooda, A. Hyvärinen, I. Kalapov, N. Kalivitis, A. Kasper-Giebl, J. E. Kim, G. Kouvarakis, I. Kranjc, R. Krejci, M. Kulmala, C. Labuschagne, H.-J. Lee, H. Lihavainen, N.-H. Lin, G. Löschau, K. Luoma, A. Marinoni, S. Martins Dos Santos, F. Meinhardt, M. Merkel, J.-M. Metzger, N. Mihalopoulos, N. A. Nguyen, J. Ondracek, N. Pérez, M. R. Perrone, J.-E. Petit, D. Picard, J.-M. Pichon, V. Pont, N. Prats, A. Prenni, F. Reisen, S. Romano, K. Sellegri, S. Sharma, G. Schauer, P. Sheridan, J. P. Sherman, M. Schütze, A. Schwerin, R. Sohmer, M. Sorribas, M. Steinbacher, J. Sun, G. Titos, B. Toczko, T. Tuch, P. Tulet, P. Tunved, V. Vakkari, F. Velarde, P. Velasquez, P. Villani, S. Vratolis, S.-H. Wang, K. Weinhold, R. Weller, M. Yela, J. Yus-Diez, V. Zdimal, P. Zieger, N. Zikova
Publikováno v:
Atmospheric Measurement Techniques, Vol 13, Pp 4353-4392 (2020)
Aerosol particles are essential constituents of the Earth's atmosphere, impacting the earth radiation balance directly by scattering and absorbing solar radiation, and indirectly by acting as cloud condensation nuclei. In contrast to most greenhouse
Externí odkaz:
https://doaj.org/article/19a4fc184512448f83e72c5643d46ccd
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 9135-9151 (2020)
In coastal areas, there is increased concern about emissions from shipping activities and the associated impact on air quality. We have assessed the ship aerosol properties and the contribution to coastal particulate matter (PM) and nitrogen dioxide
Externí odkaz:
https://doaj.org/article/7441884721f2492aaac6c44cbb16b2be
Publikováno v:
PLoS Biology, Vol 19, Iss 8 (2021)
Sharks (Selachimorpha) are iconic marine predators that have survived multiple mass extinctions over geologic time. Their prolific fossil record is represented mainly by isolated shed teeth, which provide the basis for reconstructing deep time divers
Externí odkaz:
https://doaj.org/article/bd5aab7d7e6f465d86ff932484a5ff81
Publikováno v:
Atmospheric Measurement Techniques, Vol 12, Pp 4479-4493 (2019)
Ship traffic is a major source of aerosol particles, particularly near shipping lanes and harbours. In order to estimate the contribution to exposure downwind of a shipping lane, it is important to be able to measure the ship emission contribution at
Externí odkaz:
https://doaj.org/article/f725b58ec4a54130bd799f0124c618ce