Search for dissertations about: "B. Bergman"

Showing result 1 - 5 of 16 swedish dissertations containing the words B. Bergman.

2. 1. Electronic structure and exchange interactions from ab initio theory : New perspectives and implementations

   Author : Ramon Cardias Alves de Almeida; Olle Eriksson; Anders Bergman; Attila Szilva; R. B. Muniz; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; ab initio; exchange interactions; non-collinear magnetism; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

   Abstract : In this thesis, the magnetic properties of several materials were investigated using first principle calculations. The ab initio method named real space linear muffin-tin orbitals atomic sphere approximation (RS-LMTO-ASA) was used to calculate the electronic structure and magnetic properties of bulk systems, surface and nanostructures adsorbed on surfaces. READ MORE

4. 2. Fetal echo doppler for early detection of congenital heart block

   Author : Gunnar Bergman; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Background: Fetal echo Doppler methods detecting prolonged atrioventricular (AV) time intervals, a mechanical PR interval corresponding to the electrical PR interval in ECG, have been proposed for surveillance of pregnancies at risk of complete congenital heart block (CCHB). The aim of this thesis was; to validate these Doppler methods by comparing AV time intervals from left ventricular inflow (MV), inflow and aortic outflow (MV-Ao) and superior vena cava and aortic flow (SVC-Ao) with ECG in newborns (Paper I); to investigate the significance of mechanical components in AV time prolongation (Paper II); to evaluate the diagnostic precision in a target population (Paper III) and to verify childhood outcome of fetuses, exposed to maternal anti- SSA/Ro antibodies (SSA),(Paper IV). READ MORE

5. 3. Studies of the Biology of Intrathecal Treatment in Progressive MS

   Author : Joakim Bergman; Anders Svenningsson; A. Tommy Bergenheim; Jonathan D. Gilthorpe; Joachim Burman; Magnus Andersson; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Progressive Multiple Sclerosis; intrathecal treatment; Ommaya reservoir; anti-CD20 therapy; microdialysis; cerebrospinal fluid; CNS compartments; Progressiv Multipel Skleros; intratekal behandling; Ommaya reservoar; anti-CD20 terapi; mikrodialys; ryggmärgsvätska; sektioner i centrala nervsystemet; Neurology; neurologi;

   Abstract : Background: Multiple Sclerosis (MS) is a chronic, inflammatory, autoimmune disease, affecting the central nervous system (CNS). About 85% of afflicted present with a relapsing-remitting form of the disease (RRMS), for which a breakthrough in treatment was made in 2008 with rituximab, an antibody directed towards CD20, a surface antigen on B-cells. READ MORE

6. 4. Computer simulation of topological and spatial structure in water and aqueous solutions

   Author : Dan Bergman; Ruth M. Lynden-Bell; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physical Chemistry; fysikalisk kemi;

   Abstract : The present thesis concerns molecular-dynamics and expanded-ensemble simulation of topological and spatial structure in water and aqueous solutions.First, methods for analysis of molecular pair configurations using angularly resolved density distributions were considered. READ MORE

7. 5. Syntheses of some tri- and tetracyclic heterocycles containing an indole moiety

   Author : Robert Engqvist; jan Bergman; Victor Snieckus; Södertörns högskola; Karolinska Institutet; Karolinska Institutet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Alkaloid; drug development; heterocycles; indole; metabolite; synthesis; X-ray crystallography;

   Abstract : This thesis deals with the development of new synthetic methods leading to fused tri- and tetracyclic heterocycles, many of which have interesting biological activity such as antiviral and DNA intercalating properties. The reactions between isatins and 2-aminobenzylamine in acetic acid can give, depending on the conditions, either complex spirooxindoles or indolo[3,2-c]quinolin-6-ones. READ MORE