Search for dissertations about: "emission"

Showing result 21 - 25 of 1819 swedish dissertations containing the word emission.

  1. 21. Deactivation of emission control catalysts for heavy-duty vehicles : Impact of biofuel and lube oil-derived contaminants

    Author : Sandra Dahlin; Lars Pettersson; Isabella Nova; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; NH3-SCR; Cu-SSZ-13; V2O5-WO3 TiO2; catalyst deactivation; diesel oxidation catalyst; sulfur; phosphorus; biodiesel; heavy-duty; emission control; regeneration; alkali metals; NH3-SCR; Cu-SSZ-13; V2O5-WO3 TiO2; katalysatordeaktivering; dieseloxidationskatalysator; svavel; fosfor; biodiesel; tunga dieselmotorer; avgasrening; regenerering; alkalimetaller; Chemical Engineering; Kemiteknik;

    Abstract : Catalytic emission control is used to reduce the negative impact of pollutants from diesel exhausts on our health and on the environment. For a heavy-duty truck, such a system consists of a diesel oxidation catalyst (DOC), a diesel particulate filter (DPF), a selective catalytic reduction (SCR) catalyst, and an ammonia slip catalyst (ASC). READ MORE

  2. 22. Contributions to Emission, Exposure and Risk Assessment of Nanomaterials

    Author : Rickard Arvidsson; Chalmers University of Technology; []
    Keywords : NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; nanoparticles; particle flow analysis; emission assessment; titanium dioxide; graphene; silver; risk assessment; exposure assessment; Nanomaterials; substance flow analysis.;

    Abstract : In recent years, synthetic nanomaterials have begun to be produced and used in increasingly larger volumes. These materials may cause new or increased risks to the environment, but no harmonized methods for structured assessment of their environmental risks exist. READ MORE

  3. 23. Search for Biomarkers in ALS and Parkinson's Disease : Positron Emission Tomography and Cerebrospinal Fluid Studies

    Author : Anders Johansson; Håkan Askmark; Lennart Persson; Uppsala universitet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; amyotrophic lateral sclerosis; ALS; Parkinson’s disease; cerebrospinal fluid; positron emission tomography; vascular endothelial growth factor; fibroblast growth factor 2; proteomics; Fourier transform ion cyclotron resonance mass spectrometry; deprenyl-D2; PIB; FDG; L-[β11C]-DOPA; Neurology; Neurologi; Neurology; neurologi;

    Abstract : New biomarkers are needed to improve knowledge about pathophysiology, in order to provide earlier correct diagnosis and to follow disease progression of the neurodegenerative diseases amyotrophic lateral sclerosis (ALS) and Parkinson's disease (PD). The aim of this thesis was to find new biomarkers for these diseases. READ MORE

  4. 24. The Acute Effects of Exercise on Skeletal Muscle Blood Flow : Positron Emission Tomography Studies in Healthy Subjects

    Author : Marko Laaksonen; Mittuniversitetet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; positron emission tomography; exercise; blood flow; skeletal muscle; Sports; Idrott;

    Abstract : .... READ MORE

  5. 25. Field emission from multi-walled carbon nanotubes

    Author : Martin Sveningsson; Chalmers University of Technology; []
    Keywords : electron field emission; scanning tunneling microscope STM ; scanning electron microscope SEM ; transmission electron microscope TEM ; chemical vapour deposition; black-body radiation; current densities; carbon nanotubes;

    Abstract : .... READ MORE