Publications by authors named "K W Kjaer"
Article Synopsis
- The study analyzes 317 ancient genomes from Mesolithic and Neolithic periods across northern and western Eurasia to understand human migration impacts during the Holocene.* -
- Findings show a significant genetic divide between eastern and western populations, with the west experiencing major gene replacement due to the introduction of farming, while the east maintained its hunter-gatherer ancestry longer.* -
- The Yamnaya culture, which emerged around 5,000 BP, played a crucial role in spreading ancestry across western Eurasia, leading to significant genetic changes in European populations.*
Major migration events in Holocene Eurasia have been characterized genetically at broad regional scales. However, insights into the population dynamics in the contact zones are hampered by a lack of ancient genomic data sampled at high spatiotemporal resolution. Here, to address this, we analysed shotgun-sequenced genomes from 100 skeletons spanning 7,300 years of the Mesolithic period, Neolithic period and Early Bronze Age in Denmark and integrated these with proxies for diet (C and N content), mobility (Sr/Sr ratio) and vegetation cover (pollen).
View Article and Find Full Text PDFWe apply ultrashort X-ray laser pulses to track optically excited structural dynamics of [Ir(dimen)] molecules in solution. In our exploratory study we determine angular correlations in the scattered X-rays, which comprise a complex fingerprint of the ultrafast dynamics. Model-assisted analysis of the experimental correlation data allows us to elucidate various aspects of the photoinduced changes in the excited molecular ensembles.
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