Sökning: "electrostatics"

Visar resultat 1 - 5 av 36 avhandlingar innehållade ordet electrostatics.

1. 1. Electrostatics in lipid membranes : a computer simulation study

   Författare :Jakob Wohlert; KTH; []
   Nyckelord :molecular dynamics; lipid bilayers; pme; Dipole interaction;

   Sammanfattning : .... LÄS MER

3. 2. Navigating the Cellular Crowd : Physicochemical Properties of Protein Surfaces as Evolved Interaction Guides

   Författare :Eloy Vallina Estrada; Mikael Oliveberg; Erik Lindahl; Gideon Schreiber; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; protein interactions; inteins; physicochemical properties; protein surfaces; evolution; cellular crowding; electrostatics; Biophysics; biofysik;

   Sammanfattning : The cellular interior is characterised by high concentrations of macromolecules. Compared with dilute conditions, the crowd modifies proteins' ability to fold, diffuse and, ultimately, carry out their biological functions. Cellular fitness depends on ensuring an adequate balance between interactivity and diffusivity. LÄS MER

4. 3. Meso-scale modelling of composites and semi-crystalline polymers

   Författare :Fritjof Nilsson; Mikael Hedenqvist; Ulf Gedde; Hans Ågren; Göran Grimvall; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; semi-crystalline polymers; simulations; diffusion; electrostatics; Materials science; Teknisk materialvetenskap; Applied mathematics; Tillämpad matematik; Polymer chemistry; Polymerkemi;

   Sammanfattning : This thesis covers the first few steps of a multi-scale computer simulation strategy for predicting physical properties of complex polymers like composites and semi-crystalline polymers. Meso-scale simulations of crystallization and solvent diffusion in polyethylene as well as simulations examining the geometrical impact on the effective permittivity of composites have been performed. LÄS MER

5. 4. Concentrated DNA-amphiphiles Structure, Hydration, and Dynamics

   Författare :Cecilia Leal; Fysikalisk kemi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; amphiphiles; DNA; Physical chemistry; diffusion NMR; solid-state NMR; electrostatics; dynamics; local order; Fysikalisk kemi; hydration;

   Sammanfattning : The structure, hydration, and dynamics of concentrated DNA-amphiphile complexes were investigated by small-angle X-ray diffraction, sorption calorimetry, and nuclear magnetic resonance. A concentrated, electroneutral, DNA-amphiphile complex can be formed by mixing charge-stoichiometric solutions. LÄS MER

7. 5. Diffusive interactions play an important role in protein stability and mobility : Investigations of the intracellular milieu using in-cell NMR

   Författare :Therese Sörensen; Mikael Oliveberg; Per Jemth; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; in-cell NMR; protein-protein interactions; mobility; stability; thermodynamics; Nuclear Magnetic Resonance; stopped-flow spectroscopy; proteins; SOD1; HAH1; TTHA1718; cells; cytoplasm; humans; bacteria; ions; polyions; electrostatics; biokemi; Biochemistry;

   Sammanfattning : Proteins are crucial for all cellular life. Every signal received by a cell, and every response to it, is mediated by proteins. Inside cells, these proteins diffusively sample each other’s surfaces, as they travel through the cytoplasm in search of their specific interaction partners. LÄS MER