Sökning: "model membranes"

Visar resultat 6 - 10 av 317 avhandlingar innehållade orden model membranes.

1. 6. Deployment Control of Spinning Space Webs and Membranes

   Författare :Mattias Gärdsback; Anders Eriksson; Gunnar Tibert; Thomas W. Murphey; KTH; []
   Nyckelord :Flexible structures; space webs; membranes; solar sails; solar power systems; deployment control; optimal control; centrifugal force deployment; spin deployment; rotation-free; shell elements; TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : Future solar sail and solar power satellite missions require deployment of large and lightweight flexible structures in space. One option is to spin the assembly and use the centrifugal force for deployment, stiffening and stabilization. LÄS MER

3. 7. Polarized light spectroscopy studies of model membranes and DNA

   Författare :Maxim Kogan; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; emission; ruthenium dipyridophenazine complex; lipid bilayer; linear dichroism; membrane model; membrane orientation; bimolecular probe; DNA;

   Sammanfattning : Over the past decades Linear Dichroism (LD) spectroscopy has proven to be a powerful tool for studies of structure and functioning of different cell constituents, including DNA, cell membranes and proteins. Due to structural complexity of cell constituents, the LD studies of biomolecules depend on development of simplified model systems, which can mimic the original structure and functionality of the cell components. LÄS MER

4. 8. Spectroelectrochemistry with Ultrathin lon-Selective Membranes

   Författare :Yujie Liu; Gaston A. Crespo; Maria Cuartero; Alvaro Colina Santamaria; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ion-selective electrodes; electron-transfer and ion-transfer processes; spectroelectrochemistry; ultrathin membranes; thin-layer voltammetry; coulometry; Jonselektiva elektroder; elektronöverförings- och jonöverföringsprocesser; spektroelektrokemi; ultratunna membran; tunnskiktsvoltammetri; coulometri; Kemi; Chemistry;

   Sammanfattning : Rapid and decentralized chemical sensing strategies are highly demanded in contemporary society to monitor ongoing processes relevant to the environment, food analysis, healthcare, sports performance, etc. In this context, ion-selective electrodes (ISEs) based on polymeric membranes have emerged as a promising analytical technique owing to their features of low cost, portability, versatility, and energy efficiency. LÄS MER

5. 9. α-Synuclein Fibril Formation and the Effects of Lipid Membranes

   Författare :Ricardo Gaspar; Fysikalisk kemi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Protein misfolding; alpha-synuclein; Parkinson s disease; microscopic rate constants; Thioflavin T; ganglioside lipids; Exosomes; protein-lipid co-aggregation; model membranes; monomer-dependent secondary nucleation;

   Sammanfattning : Amyloid protein aggregation results in major disturbances of cellular processes in humans. The most common amyloid-related disorders are Alzheimer´s disease and Parkinson´s disease. Parkinson´s disease is charaterized by the formation of protein-rich aggregates that are deposited in neurons, termed Lewy bodies and Lewy neurites. LÄS MER

7. 10. Strings, Branes and Non-trivial Space-times

   Författare :Jonas Björnsson; Stephen Hwang; Ioannis Bakas; Karlstads universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; String theory; Membranes; BRST; p -branes; p -branes; Non-compact backgrounds; WZNW-model; No-ghost theorem; Unitarity; Hermitian symmetric spaces; CFT; Physics; Fysik; Physics; Fysik;

   Sammanfattning : This thesis deals with different aspects of string and /p/-brane theories. One of the motivations for string theory is to unify the forces in nature and produce a quantum theory of gravity. /p/-branes and related objects arise in string theory and are related to a non-perturbative definition of the theory. LÄS MER