Search for dissertations about: "frankel 3"

Found 5 swedish dissertations containing the words frankel 3.

2. 1. Characterization of the MRI patient exposure environment and exposure assessment methods for magnetic fields in MRI scanners

   Author : Jennifer Frankel; Jonna Wilén; Anders Garpebring; Johan Olsrud; Peter Lundberg; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; electromagnetic fields; exposure assessment; magnetic resonance imaging; switched gradient fields; radiofrequency fields; exposure metrics; radiofysik; radiation physics;

   Abstract : Magnetic resonance imaging (MRI) has become one of the most common imaging modalities available in modern medicine, and it is an indispensable diagnostic tool thanks to the unparalleled soft-tissue contrast and high image resolution. It is also a unique exposure environment consisting of a complex mix of magnetic fields. READ MORE

4. 2. Mechanistic studies of localized corrosion of Al alloys by high resolution in-situ and ex-situ probing techniques

   Author : Ali Davoodi; Jinshan Pan; Gerald S. Frankel; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; localized corrosion; pitting; aluminum alloy; intermetallic particle; Volta potential; cathodic activity; micro-galvanic effect; size dependence; SKPFM; in-situ AFM; integrated AFM SECM; numerical simulation; micrometer resolution; EIS.; Chemistry; Kemi;

   Abstract : A multi-analytical approach based on in-situ and ex-situ local probing techniques was employed to investigate localized corrosion mechanisms of some aluminum alloys in chloride containing solutions, focusing on the influence of intermetallic particles (IMPs) in the alloys. In the EN AW-3003 alloy, SEM-EDS analysis revealed constituent and dispersoid IMPs. READ MORE

5. 3. Long-Term Outcome of Fractures of the Thoracic and Lumbar Spine

   Author : Anders Möller; Ortopedi - klinisk och molekylär osteoporosforskning; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Medicine human and vertebrates ; Medicin människa och djur ; Schmorl s nodes; Thoracic; Disc degeneration; Adolescents; Children; Lumbar; Burst fractures; Non-operative; Long-term outcome; Vertebral fractures;

   Abstract : From the radiographic archives at the Malmö University Hospital, Malmö, Sweden, we identified children below age 16 years (n=74) and adolescents between 16 to 18 years (n=40) with a clinically and radiographically diagnosed thoracic or lumbar vertebral fracture between 1950 to 1971 (with exception of two years of missing radiographs), and all adults above age 18 years (n=39) with a non-operatively treated thoracic or lumbar burst fracture during the years 1965 to 1973. Fractures were classified according to Denis. READ MORE

6. 4. Essays on exchange rates and international finance

   Author : Marianne Nessén; Handelshögskolan i Stockholm; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

   Abstract : This dissertation consists of three essays. Essay 1: Common Trends in Prices and Exchange Rates – Tests of Long-Run Purchasing Power Parity. This essay examines the empirical validity of long-run purchasing power parity by means of multivariate cointegration tests due to Johansen (1988, 1991a). READ MORE

7. 5. Three-Dimensional Modelling and Inversion of DC resistivity and Time Domain EM data using Multi-Resolution Framework

   Author : Jingyu Gao; Thorkild Maack Rasmussen; Maxim Smirnov; Bülent Tezkan; Luleå tekniska universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; DC Resistivity; time-domain electromagnetic; forward modelling; data inversion; Prospekteringsgeofysik; Exploration Geophysics;

   Abstract : 3-D forward modelling and inversion techniques play an important role in data interpretation, but they are still computationally challenging tasks. Therefore, this thesis aims to improve forward modelling and inversion performance using novel multi-resolution (MR) grid approach. READ MORE