Sökning: "Surface bonds"

Visar resultat 1 - 5 av 162 avhandlingar innehållade orden Surface bonds.

1. 1. Surface Stabilization and Electrochemical Properties from a Theoretical Perspective

   Författare :Daniel Petrini; Karin Larsson; Jan-Otto Carlsson; Martin Stutzmann; Uppsala universitet; []
   Nyckelord :Inorganic chemistry; DFT; Diamond; High surface conductivity; Surface reactivity; c-BN; Oorganisk kemi;

   Sammanfattning : Diamond and cubic boron nitride surfaces have extreme properties that can be exploited in novel tribological, electrochemical and electronic applications. Normally insulating diamond surfaces can exhibit high surface conductivities due to hydrogen termination and the nature of the surrounding atmosphere. LÄS MER

3. 2. Coordination Chemistry of Monocarboxylate and Aminocarboxylate Complexes at the Water/Goethite Interface

   Författare :Katarina Norén; Per Persson; Staffan Sjöberg; Stephan J. Hug; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Acetate; benzoate; adsorption; surface complex; ternary surface complexes; ATR-FTIR spectroscopy; EXAFS spectroscopy.; cyclohexanecarboxylate; sarcosine; MIDA; EDDA; EDTA; gallium III ; goethite; mineral surface; Chemistry; Kemi;

   Sammanfattning : This thesis is a summary of five papers with focus on adsorption processes of various monocarboxylates and aminocarboxylates at the water/goethite interface. Interaction of organic acids at the water/mineral interfaces are of importance in biogeochemical processes, since such processes have potential to alter mobility and bioavailability of the acids and metal ions. LÄS MER

4. 3. Structural studies of the surface adhesin SspB from Streptococcus gordonii

   Författare :Nina Forsgren; Karina Persson; Inger Andersson; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Streptococcus gordonii; X-ray crystallography; surface adhesin; dental plaque; structural biology; Structural biology; Strukturbiologi; ODONTOLOGY; ODONTOLOGI; odontologi; Odontology;

   Sammanfattning : Surface proteins on microorganisms that build up the oral biofilm are key players in the formation of the biofilm. Antigen I/II proteins are surface adhesins found on virtually all oral streptococci and share a conserved multi-domain architecture. These adhesins bind surface components on other bacteria and on host cells. LÄS MER

5. 4. Adsorption of Molecules on Metal Surfaces Studied by High Resolution Core Level Photoemission

   Författare :Andreas Beutler; Synkrotronljusfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Core level photoemission; molecules; adsorption; single crystal surfaces; metals; metal films; vibrations of adsorbed molecules; surface ordering; carbon monoxide; photoelectron spectroscopy; surface diffusion; Atomic and molecular physics; Atom- och molekylärfysik; Fysicumarkivet A:1998:Beutler;

   Sammanfattning : Various aspects of the adsorption of molecules on metal surfaces have been studied making use of different properties of high resolution core level photoemission. A thorough investigation has been performed of the ordering and the site occupancy of CO overlayers on Rh(111). CO has been shown to adsorb in on-top and three-fold-hollow sites. LÄS MER

7. 5. Micromechanical Behavior of Fiber Networks

   Författare :Svetlana Borodulina; Mikael Nygårds; Artem Kulachenko; Susanne Heyden; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Network simulation; Mechanical properties; Fibers; Bonds; Paper properties; Damage; Microfibril angle; Torsion;

   Sammanfattning : Paper is used in a wide range of applications, each of which has specific requirements on mechanical and surface properties. The role of paper strength on paper performance is still not well understood. This work addresses the mechanical properties of paper by utilizing fiber network simulation and consists of two parts. LÄS MER