Sökning: "differential measurements"

Visar resultat 21 - 25 av 207 avhandlingar innehållade orden differential measurements.

  1. 21. Remote Measurements of Gas and Particulate Matter Emissions from Individual Ships

    Författare :Jörg Beecken; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; pollution; compliance monitoring; shipping; ship emission; particle emissions; identification of polluting ships; emission factors;

    Sammanfattning : Shipping significantly contributes to the world's anthropogenic emissions of sulfur, nitrogen species and particulate matter. These species affect the global radiative forcing as well as local acidification, eutrophication and human health. LÄS MER

  2. 22. Turbulence Measurements in a Natural Convection Boundary Layer and a Swirling Jet

    Författare :Abolfazl Shiri; [2010]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; swirl; constant current bridge; high Rayleigh number; natural convection; Jet; cold-wire thermometry; vertical cylinder; laser Doppler anemometry; turbulent boundary layers;

    Sammanfattning : Two sets of experimental measurement were carried out on an axisymmetric swirling jet flow and a natural convection boundary layer. In the first experiment, the far field of an incompressible swirling jet, discharged into a quiescent ambient has been studied using laser Doppler anemometry. LÄS MER

  3. 23. Hygroscopic Properties of Atmospheric Aerosol Particles in Various Environments

    Detta är en avhandling från Division of Nuclear Physics, PO Box 118, S-221 00 Lund, Sweden

    Författare :Jingchuan Zhou; Lunds universitet.; Lund University.; [2001]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; tandem differential mobility analyser TDMA ; internal and external mixture; closure study; GDF95; AOE-96; Fysik; Physics; Kärnfysik; Nuclear physics; ACE-2; CLAIRE98; differential mobility particle sizer DMPS ; atmospheric aerosol particles; hygroscopic growth; Fysicumarkivet A:2001:Zhou;

    Sammanfattning : Atmospheric aerosol particles affect our living environment in many ways. Their effects are influenced by the interaction between the aerosol particles and the ubiquitous water vapour. The number-size distribution is a primary important parameter for aerosol particles and can be measured using the differential mobility particle sizer (DMPS). LÄS MER

  4. 24. An upgrade of the SCANDAL facility for neutron scattering measurements at 175 MeV

    Detta är en avhandling från Uppsala : Department of Physics and Astronomi

    Författare :Pernilla Andersson; Uppsala universitet.; [2009]

    Sammanfattning : The experimental setup SCANDAL, used for measurements of the differential cross section for elastic neutron scattering, has been upgraded with new Na doped CsI scintillating detectors for measurements at 175 MeV. Two experimental campaigns have been carried out, collecting data on three different nuclei: iron, bismuth and silicon. LÄS MER

  5. 25. Brownian Relaxation Measurements of Magnetic Nanoparticles: Towards the Development of a Novel Biosensor System

    Detta är en avhandling från Uppsala : Department of Physics and Astronomi

    Författare :Andrea Prieto Astalan; [2007]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PSA; Magnetic susceptibility; Brownian relaxation; Biosensor; Prostate specific antigen; Magnetic nanoparticles; Frequency domain; Induction coils; Time domain;

    Sammanfattning : Magnetic measurements of the Brownian relaxation time of thermally blocked magnetic nanoparticles dispersed in a solution have been performed in order to determine the hydrodynamic size distribution of the particles. By measuring changes in the hydrodynamic size of the particles, the ammount of analytes attached to the surface of particles can be determined. LÄS MER