Sökning: "Aqueous solution"

Visar resultat 16 - 20 av 349 avhandlingar innehållade orden Aqueous solution.

  1. 16. Polymers in Aqueous Lubrication

    Författare :Junxue An; Per M. Claesson; Martin Malsten; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Lubrication; boundary lubrication; friction; surface forces; adsorption; adsorption hysteresis; non-equilibrium state; diblock copolymer; polyelectrolyte; thermoresponsive; mucin; QCM-D; ellipsometry; AFM; Kemi; Chemistry;

    Sammanfattning : The main objective of this thesis work was to gain understanding of the layer properties and polymer structures that were able to aid lubrication in aqueous media. To this end, three types of polyelectrolytes: a diblock copolymer, a train-of-brushes and two brush-with-anchor mucins have been utilized. LÄS MER

  3. 17. Studies on equilibria of vitamin C in aqueous solution

    Författare :Olof Wahlberg; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  4. 18. Classical and Car-Parrinello Molecular Dynamics Simulations of Polyvalent Metal Ions in Water

    Författare :Sami Amira; Kersti Hermansson; Imre Bako; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Inorganic chemistry; Car-Parrinello molecular dynamics simulations; ab initio calculations; ion; copper; aluminium; metal ion; water; aqueous solution; solvation; Oorganisk kemi; Inorganic chemistry; Oorganisk kemi;

    Sammanfattning : The aqueous solvation of metal ions is one of the long-standing and complex problems in chemistry, with implications for and applications in a broad range of biochemical and electrochemical systems, where water is the all-pervasive medium.This thesis describes computer simulations of Al3+(aq), Fe2+(aq), Fe3+(aq) and Cu2+(aq). LÄS MER

  5. 19. Thermophysical Properties of Aqueous Solutions Used as Secondary Working Fluids

    Författare :Åke Melinder; Björn Palm; Antero Aittomäki; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Secondary working fluids; secondary refrigerants; indirect systems; aqueous solutions; ice slurry; thermophysical properties; freezing point; density; viscosity; specific heat; thermal conductivity; Mechanical and thermal engineering; Mekanisk och termisk energiteknik;

    Sammanfattning : Secondary working fluids (secondary refrigerants, heat transfer fluids, antifreezes, brines) have long been used in various indirect re-frigeration and heat pump systems. Aqueous solutions (water solu-tions) have long been used as single phase (liquid only) secondary working fluids for cooling in supermarkets, ice rinks, heat recovery systems, heat pumps and other applications. LÄS MER

  7. 20. Cation Solvation in Water and Acetonitrile from Theoretical Calculations

    Författare :Daniel Spångberg; Kersti Hermansson; Philippe Bopp; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Inorganic chemistry; molecular dynamics; ab initio; lithium; sodium; magnesium; aluminum; metal ion; water; acetonitrile; solution; solvation; Oorganisk kemi; Inorganic chemistry; Oorganisk kemi;

    Sammanfattning : Metal ions solvated in aqueous, non-aqueous, and mixtures of solvents occur in many chemical contexts, for example in electrochemical applications and solvent separation. Solvated ions appear in high concentration in the living organisms, where their presence or absence can fundamentally alter the functions of life. LÄS MER