Sökning: "stable isotopes O"

Visar resultat 6 - 10 av 10 avhandlingar innehållade orden stable isotopes O.

1. 6. Magma-Crust Interaction at Subduction Zone Volcanoes

   Författare :Ester M. Jolis; Valentin R Troll; Silvio Mollo; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; magma-crust interaction; stable isotopes O-C ; radiogenic isotopes Sr-Nd-Pb ; calc-silicate xenoliths; HP-HT experimental petrology; crustal volatiles; Vesuvius; Merapi; Kelut; the Sunda arc; Geovetenskap med inriktning mot mineralogi; petrologi och tektonik; Earth Science with specialization in Mineral Chemistry; Petrology and Tectonics;

   Sammanfattning : The focus of this work is magma-crust interaction processes and associated crustal volatile release in subduction zone volcanoes, drawing on rock, mineral, and gas geochemistry as well as experimental petrology. Understanding the multitude of differentiation processes that modify an original magma during ascent to the surface is vital to unravel the contributions of the various sources that contribute to the final magmas erupted at volcanoes. LÄS MER

3. 7. Fractionation of the stable silicon isotopes studied using MC-ICP-MS : analytical method developments and applications in geochemistry

   Författare :Emma Engström; Ben Reynolds; Luleå tekniska universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

   Sammanfattning : In spite of the high Si abundance in natural systems, expected significant mass-dependent fractionations, and the importance of the element in many areas of the Earth sciences (focusing on e.g. LÄS MER

4. 8. Synthesis of biomolecules for nuclide therapy : Studies on amino acids, nucleosides and isoquinolines

   Författare :Charlottta Naeslund; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Kemi; Chemistry; Kemi; organisk kemi; Organic Chemistry;

   Sammanfattning : Nuclide therapy for cancer is based on the selective delivery of nuclide bearing compounds to tumour cells. Radionuclides, such as 125I, may be used, as well as stable isotopes, such as 10B, which is activated on site by an external neutron source. LÄS MER

5. 9. Novel methods of tandem mass spectrometry in life sciences

   Författare :Mohammadhassan Gharibi; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : Mass spectrometry (MS) is a powerful analytical technique widely employed for isotopic analysis and species identification in numerous research fields. Isotopic analysis involves precisely measuring stable isotopes within a sample, offering valuable insights into its origin, environment, and biological processes. LÄS MER

7. 10. Fissure-hosted mineral formation and metallogenesis in the Långban Fe-Mn-(Ba-As-Pb-Sb...) deposit, Bergslagen, Sweden

   Författare :Erik Jonsson; Ulf Hålenius; Tom Andersen; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; mineralogi; geologi; isotopgeokemi; mineraldiversitet; malmbildning; Palaeoproterozoikum; Bergslagen; Sverige; Earth sciences; Geovetenskap;

   Sammanfattning : The Långban deposit in the Bergslagen ore province is one of the most mineral-rich and complex localities on Earth. Yet, despite more than 100 years of research, much about its origin and evolution has remained unknown. LÄS MER