Essays about: "magnetisk susceptibilitet"

Showing result 16 - 20 of 24 essays containing the words magnetisk susceptibilitet.

  1. 16. MRI-­based quantification of cerebral oxygen extraction and oxygen metabolism using the relationship between phase shift and magnetic susceptibility

    University essay from Lunds universitet/Sjukhusfysikerutbildningen

    Author : Robin Kämpe; [2014]
    Keywords : Medicine and Health Sciences;

    Abstract : Introduction: The main purpose of this study was to extract global values of oxygen extraction fraction (OEF) and cerebral metabolic rate of oxygen (CMRO2) in healthy volunteers, using magnetic resonance imaging (MRI) phase maps. The repeatability of the method was evaluated, and the age dependences of OEF and CMRO2 were analyzed. READ MORE

  3. 17. A multi-proxy study of a Holocene peat sequence on Nightingale Island, South Atlantic

    University essay from Lunds universitet/Geologiska institutionen

    Author : Hanna Lindvall; [2011]
    Keywords : Nightingale Island; South Atlantic; Holocene; peat; C N; environmental reconstruction; interglacial bipolar see-saw; Sydatlanten; Holocen; torv; miljörekonstruktion; interglacial gungbrädeseffekt; Earth and Environmental Sciences;

    Abstract : Nightingale Island is situated at 37°S in the central part of the South Atlantic Ocean, which is a sensitive location for variations within the Atlantic Meridional Overturning Circulation (AMOC) and the Southern Hemisphere Westerlies (SHW) wind belt. A peat sequence from the wetland 2nd Pond has been investigated with emphasis on the composition of the deposits, loss on ignition (LOI), total Carbon (TC), Nitrogen (N), biogenic Silica (BSi), magnetic susceptibility (MS), diatom counting and macrofossil analysis. READ MORE

  4. 18. Comparison between two sediment X-ray Fluorescence records of the Late Holocene from Disko Bugt, West Greenland : paleoclimatic and methodological implications,

    University essay from Lunds universitet/Geologiska institutionen

    Author : Oskar Jäckel; [2009]
    Keywords : Disko Bugt; X-ray fluorescence; mineral magnetism; magnetic susceptibility; paleomagnetism; bromine; productivity; Medieval Warm Period; Earth and Environmental Sciences;

    Abstract : Popular summary: X-raying the climate archive of Disko Bugt. Disko Bugt is a large bay in West Greenland north of the Arctic Circle. Because of the influence of the relatively warm ocean current coming from the south; the West Greenland Current, it has a mild climate despite its latitude. READ MORE

  5. 19. Stratigraphic studies of the Taniente Palet bog at the north-western corner of Isla de los Estados Tierra del Fuego, South America

    University essay from Lunds universitet/Geologiska institutionen

    Author : Anna-Kari Trondman; [2007]
    Keywords : Holocene; South America; Tierra del Fuego; peat; paleoclimate; holocen; Sydamerika; torv; paleoklimat; Earth and Environmental Sciences;

    Abstract : Fourteen somewhat overlapping 1-m cores, forming a total sequence of about 10.90 metres, were retrieved from Taniente Palet bog on Isla de los Estados, Argentina. The cores were described and correlated both visually and by measuring magnetic susceptibility and loss on ignition. Twelve samples were also taken for radiocarbon dating. READ MORE

  6. 20. A palaeoecological study of Holocene lake sediments above the highest shoreline in the province of Västerbotten, northeast Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Petra Bragée; [2005]
    Keywords : geography; geology; palaeoecology; Holocene lake sediments; Västerbotten; Sweden; Earth and Environmental Sciences;

    Abstract : En sedimentborrkärna från sjön Svartkälstjärn, belägen 260 m ö.h. nära Vindeln i Västerbotten, provtogs for analys av frekvensen pollen, sporer och kolpartiklar samt beräkning av ackumulationshalter. READ MORE