Sökning: "Influence Coefficient"

Visar resultat 21 - 25 av 230 avhandlingar innehållade orden Influence Coefficient.

  1. 21. Molecular investigations of atmospherically relevant interface processes: ice formation and water accommodation on ice and organic surfaces

    Författare :Xiangrui Kong; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :atmosphere; kinetics; Environmental molecular beam; ice nucleation; supersaturation; accommodation coefficient; phase transition; alcohols; green chemistry;

    Sammanfattning : Clouds and aerosols play important roles in the climate system by affecting on atmospheric chemistry, the radiation budget of the atmosphere, and the water cycle including the formation of precipitation. Climate models with predictive power require quantitative descriptions of aerosols and clouds, but several key processes remain to be fully understood. LÄS MER

  2. 22. Cracking in Reinforced Concrete Structures Due to Imposed Deformations

    Författare :Agnes Nagy; Avdelningen för Konstruktionsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; minimum reinforcement; cracking; softening; shrinkage; cooling; imposed deformations; conversion formula; static E-modulus; damping coefficient; resonance frequency; dynamic E-modulus; constitutive model; thermal stress; hydration process; reinforced concrete structure; early age; crack control; Building construction; Byggnadsteknik;

    Sammanfattning : This thesis is concerned with modeling of the cracking process in reinforced concrete due to imposed deformations. Cracking is investigated both at early ages, during hydration, and at mature age when the final properties of the concrete are reached. LÄS MER

  3. 23. Predicting the Long-Term Insulation Performance of District Heating Pipes

    Författare :Camilla Persson; Chalmers University of Technology; []
    Nyckelord :heat conduction; polyurethane foam; insulation capacity; diffusion; thermal conductivity; cyclopentane; solubility coefficient; long-term performance;

    Sammanfattning : The aim of the studies that comprise this thesis was to predict the heat loss over timefrom a range of district heating pipes insulated with closed-cells foam. The thermalconductivity of the foam changes over time when it is not diffusion-tight encapsulatedagainst the environment, as diffusion alters the cell gas composition until it reachesequilibrium with the surrounding air. LÄS MER

  4. 24. The Influence of Steel Sheet Surface-Topography on Friction in Stamping

    Författare :Anders Wihlborg; Chalmers University of Technology; []
    Nyckelord :Micro Plasto HydroDynamic Lubrication MPHDL ; EBT; ECD; EDT; WC index; SBT; surface topography; Micro Plasto HydroStatic Lubrication MPHSL ; tribology; steel sheets; Surface Indentation Test; bending under tension;

    Sammanfattning : Steel sheet is the prevalent material for car body panels. In the manufacturing of steel sheets a certain surface roughness is achieved from the ground or textured rolls used in the three final reduction steps. When manufacturing car body panels the sheets first are formed and then painted. LÄS MER

  5. 25. Computational Analysis of Aqueous Drug Solubility – Influence of the Solid State

    Författare :Carola Wassvik; Per Artursson; Anders G Holmén; Valentino J. Stella; Uppsala universitet; []
    Nyckelord :Pharmaceutics; intrinsic solubility; solubility prediction; drug solubility; solid state; melting point; enthalpy of melting; entropy of melting; solvation; free energy of hydration; QSPR; multivariate analysis; PCA; PLS; Galenisk farmaci;

    Sammanfattning : Aqueous solubility is a key parameter influencing the bioavailability of drugs and drug candidates. In this thesis computational models for the prediction of aqueous drug solubility were explored. LÄS MER