Sökning: "surface mixed layer"

Visar resultat 16 - 20 av 88 avhandlingar innehållade orden surface mixed layer.

  1. 16. Adsorption of nonionic amphiphiles to solid surfaces

    Författare :Johanna Brinck; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; silica; solubilisation; self assembly; ellipsometry; mixed micelles; surfactant; kinetics; Adsorption; desorption; Fysikalisk kemi;

    Sammanfattning : In this study, the adsorption of nonionic amphiphiles from aqueous solutions to solid, planar surfaces is investigated using null ellipsometry. This technique allows independent measurements of the amounts adsorbed at the surface and of the mean optical thickness of the adsorbed layer. LÄS MER

  3. 17. Structure, Bonding and Chemistry of Water and Hydroxyl on Transition Metal Surfaces

    Författare :Klas Andersson; Anders Nilsson; Falko Netzer; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; core-level spectroscopy; surface chemistry; water; hydroxyl; metal surfaces; adsorption; structure; hydrogen bonding; Chemical physics; Kemisk fysik;

    Sammanfattning : The structure, bonding and chemistry of water and hydroxyl on metal surfaces are presented. Synchrotron based x-ray photoelectron- and x-ray absorption spectroscopy along with density functional theory calculations mainly form the basis of the results. LÄS MER

  4. 18. The Carbon Dioxide System in the Baltic Sea Surface Waters

    Författare :Karin Wesslander; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Baltic Sea; carbon dioxide; pCO2; total alkalinity; pH; air-sea gas exchange; inter-annual; seasonal;

    Sammanfattning : The concentration of carbon dioxide (CO2) in the atmosphere is steadily increasing because of human activities such as fossil fuel burning. To understand how this is affecting the planet, several pieces of knowledge of the CO2 system have to be investigated. LÄS MER

  5. 19. Investigation of electrochemical properties and performance of stimulation/sensing electrodes for pacemaker applications

    Författare :Anna Norlin; Jinshan Pan; Dieter Scharnweber; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; pacemaker electrode; interfacial property; biomaterial; electrostimulation charge transfer mechanism; electrochemical impedance spectroscopy; transient processes; plasma electrolysis anodisation; porous niobium oxide; ruthenium oxide; nano-porous carbon; iridium oxide; titanium nitride; platinum; surface roughness; porous electrode; pacing impedance; electrode polarisation; Fysikalisk kemi; Physical chemistry; Fysikalisk kemi;

    Sammanfattning : People suffering from certain types of arrhythmia may benefit from the implantation of a cardiac pacemaker. Pacemakers artificially stimulate the heart by applying short electrical pulses to the cardiac tissue to restore and maintain a steady heart rhythm. By adjusting the pulse delivery rate the heart is stimulated to beat at desired pace. LÄS MER

  7. 20. Concatemerization of Synthetic Oligonucleotides, Assembly on Surface and Ligand Interactions

    Författare :Lu Sun; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; DNA formation; DNA concatemer; self-assemble; gel electrophoresis; DNA-binding; hybridization; QCM-D;

    Sammanfattning : DNA nanotechnology has become an important research field because of its advantages in high predictability and accuracy of base-paring recognition. DNA concatemer, one of the simplest DNA constructs in shape, have been found as efficient signal amplifiers in several biosensors for different applications. LÄS MER