Search for dissertations about: "stable isotopes analyses"
Showing result 1 - 5 of 25 swedish dissertations containing the words stable isotopes analyses.
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1. Migration in Prehistory : DNA and stable isotope analyses of Swedish skeletal material
Abstract : The main aim of this thesis is to show how scientific methods may be used to look at migration in prehistory on the basis of archaeological material. The individuals examined represent the period 4 000 BC to 1 000 AD and have their geographical origins in various parts of Sweden.Ancient DNA analysis is employed in three cases. READ MORE
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2. Fractionation of the stable silicon isotopes : analytical method developments and selected applications in geochemistry
Abstract : During the last few decades, variations in the 'natural' isotopic abundances of stable elements (termed 'fractionation') have received considerable interest from the scientific community. Though analytical methods and techniques for the measurement of isotopic abundances with adequate figures of merit have been available for light elements (e.g. READ MORE
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3. Nitrate stable isotopes and major ions in snow and ice from Svalbard
Abstract : Increasing atmospheric reactive nitrogen (Nr), as consequence of human activities, has generated accumulation of nitrate (NO3-) in Arctic regions. The Arctic has fragile nitrogen limited ecosystems that can be altered by increases of dry or wet deposition of Nr. READ MORE
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4. Population Dynamics, Diet and Migrations of the Únetice Culture in Poland
Abstract : Únětice kulturens roll när det kommer till formandet av bronsåldern i Europa kan inte överskattas. Uppkomsten och existensen av denna originella, utvidgande och dynamiska population markerar en av de mest intressanta tidpunkterna i europeisk förhistoria, tidpunkten då en era avslutas och en ny tar vid. READ MORE
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5. Late Quaternary climate and environmental change in the summer rainfall region of South Africa : A study using trees and wetland peat cores as natural archives
Abstract : This thesis contributes with information on past climate and environmental changes in South Africa’s summer rainfall region. The study is based on multi-proxy analyses on wetland peat cores and analyses of stable isotope composition (δ13C, δ18O) and wood anatomy in cross sections from subtropical trees (Breonadia salicina). READ MORE