Search for dissertations about: "potential difference"

Showing result 11 - 15 of 886 swedish dissertations containing the words potential difference.

2. 11. Numerical Methods for Molecular Dynamics with Nearly Crossing Potential Surfaces

   Author : Ashraful Kadir; Anders Szepessy; Emanuel Rubensson; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Numerical Methods; Molecular Dynamics; Nearly Crossing Potential Surfaces; Error Estimation; Adaptive Algorithm; Tillämpad matematik och beräkningsmatematik; Applied and Computational Mathematics;

   Abstract : This thesis consists of four papers that concern error estimates for the Born-Oppenheimer molecular dynamics, and adaptive algorithms for the Car-Parrinello and Ehrenfest molecular dynamics.In Paper I, we study error estimates for the Born-Oppenheimer molecular dynamics with nearly crossing potential surfaces. READ MORE

4. 12. Accurate Finite Difference Methods for Option Pricing

   Author : Jonas Persson; Lina von Sydow; Per Lötstedt; Johan Tysk; Jari Toivanen; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Finite differences; Option pricing; Adaptive methods; Numerical Analysis; Numerisk analys;

   Abstract : Stock options are priced numerically using space- and time-adaptive finite difference methods. European options on one and several underlying assets are considered. These are priced with adaptive numerical algorithms including a second order method and a more accurate method. READ MORE

5. 13. Wastelands of difference? Urban nature and more-than-human difference in Berlin and Gothenburg

   Author : Mathilda Rosengren; Matthew Gandy; Maan Barua; Steve Hinchliffe; University of Cambridge; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Berlin; Gothenburg; more-than-human ethnography; multispecies ethnography; more-than-human geography; urban green space; urban wastelands; landscape architecture; urban planning; non-human agency; affect; Stadtbrachen; Brachen; Anita-Berber-Park; St. Thomas Friedhof; Natur-Park Südgelände; Park am Gleisdreieck; Göteborg; Trollspisberget; Högåsberget; Frihamnen; Mossen; bostadsnära natur; Urban studies; Urbana studier;

   Abstract : This thesis explores more-than-human entanglements of contemporary urban environments in order to develop a rearticulation of urban landscapes as spaces decidedly beyond the exclusively human. Taking its cue from the question “How do we live with urban difference today?,” such spaces, the thesis argues, emerge through, as well as change with, a variety of socio-ecological entwinements. READ MORE

6. 14. Sensory and secretory responses to intestinal distension; implications for the pathophysiology of the irritable bowel syndrome

   Author : Marie Larsson; Göteborgs universitet; []
   Keywords : irritable bowel syndrome; secretion; transmucosal potential difference; migrating motor complex; colorectal distension; visceral sensitivity; colitis; enteric nervous system; rat; mouse;

   Abstract : Irritable bowel syndrome (IBS) is a common gut disorder, characterized by abdominal pain and/or discomfort associated with disturbed bowel habits. The pathophysiology of IBS is complex and still largely unknown, although visceral hypersensitivity is frequently associated with the disease. READ MORE

7. 15. Neural control of colonic epithelial transport, motility and permeability in vivo. An experimental study in anaesthetized rats

   Author : Ying Sun; Göteborgs universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; enteric nervous system; colonic motility; transmural potential difference; net; fluid transport; permeability; bile acid; nitric oxide; inflammatory bowel disease;

   Abstract : Colonic dysfunction may result in diarrhoea, abdominal pain or constipation, andinflammatory bowel disease, bile acid malabsorption and particularly irritable bowelsyndrome are very common disorders. The role of the enteric nervous system (ENS) inthese diseases is largely unknown. READ MORE