Sökning: "absolute number concentration"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden absolute number concentration.

  1. 1. Concentration measurements in single particle microscopy

    Författare :Magnus Röding; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; diffusion; fluorescence microscopy; nanoparticle characterization; number concentration; optical wide-field microscopy; single particle tracking; Smoluchowski process; diffusion;

    Sammanfattning : The topic of this thesis is the introduction of two novel methods for using single particle microscopy as a tool for absolute number concentration measurements of Brownian particles. The key idea of both methods is that in order to estimate number concentration, the size of the (three-dimensional) particle detection region has to be estimated. LÄS MER

  3. 2. Statistical methods in single particle fluorescence microscopy

    Författare :Magnus Röding; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; absolute number concentration; Brownian motion; diffusion; fluorescence microscopy; image analysis; image processing; nanoparticle characterization; particle tracking; Smoluchowski process; nanoparticle characterization;

    Sammanfattning : The aim of this thesis is stochastic modeling and statistical inference in single particle fluorescence microscopy related to the experimental observation of randomly moving particles. A central theme is the use of single particle microscopy for estimation of absolute concentration of nanoparticles performing Brownian motion. LÄS MER

  4. 3. Visualization of Air Flow, Temperature and Concentration Indoors : Whole-field measuring methods and CFD

    Författare :Mathias Cehlin; Mats Sandberg; Alfred Moser; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Environmental engineering; Miljöteknik; Whole-field;

    Sammanfattning : The thermal indoor climate is a complicated combination of a number of physical variables, all of which strongly affect people’s well-being. The indoor climate not only heavily affects people’s health and life quality, but also their productivity and ability to work efficiently. LÄS MER

  5. 4. Cloud Studies with the Droplet Aerosol Analyzer

    Författare :Maria Berghof; Kärnfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cloud; Aerosol; DAA;

    Sammanfattning : Climate change and atmospheric aerosols are a threat for human health and life. Reducing aerosol emissions would save human lives close to the aerosol source, but could lead to more death due to the implications of a warmer climate. LÄS MER

  7. 5. MRI Perfusion Measurements using Magnetic Susceptibility Effects: : Calibration Approaches and Contrast Agent Quantification

    Författare :Emelie Lind; Lund Medicinsk strålningsfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; contrast agent; cerebral blood flow; cerebral blood volume; mean transit time; perfusion; dynamic susceptibility contrast MRI; magnetic susceptibility;

    Sammanfattning : Exchange of oxygen and nutrients between blood and tissue occurs at the capillary level of the blood system. The blood volume flow rate in the capillaries is often referred to as perfusion, and knowledge about perfusion provides important information about the function and viability of the tissue, for example, in patients with ischaemic stroke, cancer, and neurodegenerative diseases. LÄS MER