Search for dissertations about: "membranes"

Showing result 1 - 5 of 883 swedish dissertations containing the word membranes.

2. 1. Biomimetic Membranes: : Molecular Structure and Stability Studies by Vibrational Sum Frequency Spectroscopy

   Author : Jonathan F.D. Liljeblad; Mark W. Rutland; Magnus C. Johnson; Tore Brinck; Lars Kloo; KTH; []
   Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Vibrational Sum Frequency Spectroscopy VSFS ; Langmuir monolayer; LB depositon; phospholipids; oxidation; biomimetic membranes; Surface and colloid chemistry; Yt- och kolloidkemi;

   Abstract : In the research presented in this licentiate thesis the surface specific technique Vibrational Sum Frequency Spectroscopy, VSFS, combined with the Langmuir trough has been utilized to investigate Langmuir monolayers and Langmuir-Blodgett (LB) deposited mono- and bilayers of phospholipids. Their molecular structure, stability, and hydration were probed to gain additional understanding of important properties aiming at facilitating the use of such layers as model systems for biological membranes. READ MORE

4. 2. Stretched Membranes

   Author : Jonas Björnsson; Stephen Hwang; Jürgen Fuchs; Anders Westerberg; Ulf Lindström; Karlstads universitet; []
   Keywords : NATURAL SCIENCES; NATURVETENSKAP; Physics; Fysik; Physics; Fysik;

   Abstract : This thesis deals with relativistic membranes and, in particular, a limit called stretched membranes. The thesis also considers the relation of membranes to the conjectured M-theory and string theory. The thesis is divided into two parts. One introductory part where I introduce areas which are of relevance for the second part. READ MORE

5. 3. Inflation and Instabilities of Hyperelastic Membranes

   Author : Amit Patil; Anders Eriksson; Arne Nordmark; Peter Hansbo; KTH; []
   Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Membranes; Constrained inflation; Energy release rate; Adhesive contact condition; Limit point; Bifurcation point; Wrinkling; Tension field theory; Pressure induced instability.; Teknisk mekanik; Engineering Mechanics;

   Abstract : The applications of membranes are increasing rapidly in various fields of engineering and science. The geometric, material, force and contact non-linearities complicate their analysis, which increases the demand for computationally efficient methods and interpretation of counter-intuitive behaviours. READ MORE

6. 4. Solid-State NMR Characterization of Lipid Membranes

   Author : Vasco Castro; Arnold Maliniak; Göran Lindblom; Stockholms universitet; []
   Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Solid-State NMR; Membranes; Lipids; Glycolipids; Local Anesthetics; Hydration; Physical chemistry; Fysikalisk kemi; Physical Chemistry; fysikalisk kemi;

   Abstract : This thesis deals with the study of lipid bilayer systems by solid-state nuclear magnetic resonance. Two-dimensional 1H-13C separated local field experiments under magic-angle spinning were employed to investigate structural and dynamical modifications of cell membranes, resulting from the addition of compounds with some biological relevance. READ MORE

7. 5. Parametric stability analyses for fluid-loaded thin membranes

   Author : Yang Zhou; Anders Eriksson; Håkan Johansson; KTH; []
   Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Membranes; Hydro-static load; Multi-parametric loading; Bifurcations; Generalized path-following; Fold lines; Mesh eects; Augmenting equations; Generalized eigenproblem; Solution surface.; Teknisk mekanik; Engineering Mechanics;

   Abstract : Membrane structures are commonly used in many elds. The studies of thesestructures are of increasing interest. The two projects focus on the evaluations ofequilibrium states for uid-pressurized membranes under dierent loading conditions,and the corresponding instability behavior. READ MORE