Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Erik Hellberg"'
Autor:
Erik Hellberg, Olle Zackrisson, Lars Östlund, Lars G. Liedgren, Greger Hörnberg, Ingela M. Bergman, Thomas H. DeLuca
Publikováno v:
Journal of Archaeological Science. 34:1276-1288
Radiocarbon dating of prehistoric hearths in alpine northern Sweden: problems and possibilities
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2281269f72e179db638a25ecb0a76b33
https://doi.org/10.1016/j.jas.2006.10.018
https://doi.org/10.1016/j.jas.2006.10.018
Publikováno v:
The Lichenologist. 37:555-567
Changes in habitat affect the distribution of species at different spatial and temporal scales. Our aim was to assess the use of several retrospective methods when determining habitat history and its influence on species distribution, using the pende
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f54b8e784f752c2216e53b523d1f7cca
https://doi.org/10.1017/s0024282905015355
https://doi.org/10.1017/s0024282905015355
Autor:
Anders Olofsson, Elisabeth Bohlin, Tore Påsse, Jan-Erik Wallin, Greger Hörnberg, Ingela Bergman, Olle Zackrisson, Erik Hellberg
Publikováno v:
Vegetation History and Archaeobotany. 15:13-26
The oldest early Mesolithic settlements found so far (i.e. 8600 b.p.) in the interior of northern Sweden, in the province of Norrbotten, have been discovered through the application of a model simulating glacio-isostatic land uplift. The objective of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0ec2b1ec5f77edddfff99f53ec95e4c
https://doi.org/10.1007/s00334-005-0006-x
https://doi.org/10.1007/s00334-005-0006-x
Publikováno v:
Journal of World Prehistory. 18:155-177
We present new data on Early Mesolithic settlements in northern Sweden and discuss the process of pioneer colonization. A new set of radiocarbon dates from archaeological sites push deglaciation of northern Fennoscandia further back in time and demon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a638258d518219087619007e6de83c85
https://doi.org/10.1007/s10963-004-2880-z
https://doi.org/10.1007/s10963-004-2880-z
Publikováno v:
Canadian Journal of Forest Research. 34:332-338
To analyze the effect of landscape structure (viz. amount of wetlands) on the past forest fire regime in boreal Sweden, we reconstructed detailed fire histories by cross-dating fire scars in living and dead Scots pine (Pinus sylvestris L.) in two dif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3612068d7ffea5ea1adac1555f811833
https://doi.org/10.1139/x03-175
https://doi.org/10.1139/x03-175
Autor:
Olle Zackrisson, Elisabeth Bohlin, Erik Hellberg, Tore Påsse, Greger Hörnberg, Anders Olofsson, Ingela Bergman
Publikováno v:
Journal of Archaeological Science. 30:1451-1458
Until recently only a few Mesolithic sites were known from the interior of N. Sweden, although extensive archaeological surveys have been carried out since the 1950s. The lack of archaeological data made every attempt to interpret the process of pion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9ba9bcd2b54c0afb0fa95437fccfde6
https://doi.org/10.1016/s0305-4403(03)00040-2
https://doi.org/10.1016/s0305-4403(03)00040-2
Publikováno v:
Solid-State Electronics. 46:2209-2216
The 16 intrinsic capacitance components related to the gate, source, drain and depletion charges are examined for MOSFETs with an ideally abrupt retrograde doping profile in the channel, based on the analytical solutions for the drain current and bod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6002f6a94be0e791b5891fe97216752a
https://doi.org/10.1016/s0038-1101(02)00241-1
https://doi.org/10.1016/s0038-1101(02)00241-1
Autor:
Per-Erik Hellberg
Publikováno v:
Journal of Surfactants and Detergents. 5:217-227
A new type of cleavable cationic surfactant, based on the ortho ester link, is described. Ortho ester amines with alkyl chain lengths from C8 to C16 were synthesized from a short-chain ortho ester, a fatty alcohol, and an amino acohol. The ortho este
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c724d2cee6beccd86150f1f2c41e9e7e
https://doi.org/10.1007/s11743-002-0221-1
https://doi.org/10.1007/s11743-002-0221-1
Publikováno v:
Landscape Ecology. 17:403-418
Current knowledge of patterns and abundance of deciduous trees in thepre-industrial landscape of boreal Sweden is limited. This is due to a dramatictransformation of the forest landscape during the last 100 years and the lackofrepresentative forest r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a8481b949c5c245cad099dd41d7dcb7
https://doi.org/10.1023/a:1021226600159
https://doi.org/10.1023/a:1021226600159
Autor:
Igor Drobyshev, Mats Niklasson, Erik Hellberg, Hans W. Linderholm, Anders Granström, Yves Bergeron
Forest fires are one of the main disturbance agents in boreal and temperate ecosystems. To decipher large-scale temporal and spatial patterns of past fire activity in Scandinavia, we analysed the synchronicity of dendrochoronologically reconstructed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73f7dd75ae1c9482d3428a8eff9b76ab
