Search for dissertations about: "Sean May"

Showing result 1 - 5 of 7 swedish dissertations containing the words Sean May.

  2. 1. Development of cannabinoid subtype-1 (CB1) receptor ligands for PET

    Author : Sean R Donohue; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Introduction: Abnormalities in brain cannabinoid subtype-1 (CB1) receptor concentrations and/or signaling pathways may be involved in a variety of psychiatric and neurodegenerative disorders. There is a strong need to image and quantify brain CB1 receptor concentrations in living humans under baseline and diseased conditions. READ MORE

  4. 2. Untangling ambiguities in the microbial fossil record : experimental abiotic and biological approaches

    Author : Sigrid Huld; Anna Neubeck; Sebastian Willman; Sean McMahon; Barbara Cavalazzi; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; chemical gardens; pseudofossils; experimental mineralisation; microbial fossils; methanogens;

    Abstract : Life on early earth has long been the topic of discussion for many researchers: how did it come to be? Which cells came first? Where can we find them? The most ancient rocks on our planet may hold some of the answers to these questions, but many may only be answered in laboratories. Chemical and morphological traces can be found from Archaean deposits, tantalisingly similar to modern day prokaryotes. READ MORE

  5. 3. The evolution of TOFu : Developing and utilizing neutron time-of-flight spectrometry of deuterium and tritium fusion plasmas at JET

    Author : Benjamin Eriksson; Göran Ericsson; Anders Hjalmarsson; Sean Conroy; Jacob Eriksson; Luka Snoj; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; fusion; plasma diagnostics; neutron spectrometry; time-of-flight; TOFOR; JET; Fysik med inriktning mot tillämpad kärnfysik; Physics with specialization in Applied Nuclear Physics;

    Abstract : Considerable effort has been invested in attempting to generate electricity from the energy released in controlled thermonuclear fusion reactions, with a European fusion research roadmap stretching beyond 2050. Our current endeavors may culminate in a virtually inexhaustible, low-carbon energy source for future generations. READ MORE

  6. 4. The influence of climate and permafrost on catchment hydrology

    Author : Emma Johansson; Georgia Destouni; Sean Carey; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Hydrology; Periglacial; Greenland; Forsmark; Talik; Permafrost Hydrology; Hydrology; hydrologi;

    Abstract : The cycling of water in the landscape is influenced by climate change on different time scales and in different directions regarding warming or cooling trends. Along with a changing climate, also the landscape and subsurface conditions, such as permafrost extent, may change in a long-term perspective. READ MORE

  7. 5. Phylogenetic Support and Chloroplast Genome Evolution in Sileneae (Caryophyllaceae)

    Author : Per Erixon; Bengt Oxelman; Sean Graham; Uppsala universitet; []
    Keywords : Biology; Phylogenetics; Bayesian inference; Bootstrapping; cpDNA; Sileneae; Interspecific chloroplast recombination; Hybridization; clpP; Positive selection; Extreme substitution rates; Biologi;

    Abstract : Evolutionary biology is dependent on accurate phylogenies. In this thesis two branch support methods, Bayesian posterior probablities and bootstrap frequencies, were evaluated with simulated data and empirical data from the chloroplast genome. READ MORE