Sökning: "uncertain factors"

Visar resultat 16 - 20 av 159 avhandlingar innehållade orden uncertain factors.

1. 16. Traffic Emissions of Aerosols

   Författare :Matthias Vogt; Douglas Nilsson; Eiko Nemitz; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Primary Aerosol Emissions; Carbon Dioxide Emissions; Traffic Aerosol; Urban Aerosol; Traffic Activity; Emission Factors; Eddy Covariance; Aerosol Flux; Atmosphere and hydrosphere sciences; Atmosfärs- och hydrosfärsvetenskap; Applied Environmental Science; tillämpad miljövetenskap;

   Sammanfattning : Non-exhaust traffic emissions are unregulated, yet the mass emission of non-exhaust particles may be larger than exhaust emissions. In addition, their emission factors (EF) are more uncertain than exhaust emissions. This thesis presents aerosol flux measurements in Stockholm using the eddy covariance method. LÄS MER

3. 17. Here be monsters: Investigating sociotechnical interaction in safety-critical work in the maritime domain

   Författare :Linda de Vries; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; pilotage; Functional Resonance Analysis Method FRAM ; e-navigation; safety; Resilience Engineering; Vessel Traffic Services VTS ; Human Factors; sociotechnical systems;

   Sammanfattning : Maritime Pilots and Vessel Traffic Services (VTS) operators work to improve the safety of navigation of seagoing vessels. As in many other safety-critical domains, work is increasingly characterised by the integration and dissemination of information between humans and technology, across disciplines and over multiple geographical locations. LÄS MER

4. 18. Systemic sclerosis : vascular, pulmonary and immunological aspects

   Författare :Grethe Neumann Andersen; Solbritt Rantapää Dahlqvist; Lucia Mincheva-Nilsson; Sören Jacobsen; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Systemic sclerosis; interstitial lung disease; MMP-9; Th1 Th2; transcription factors; NO; iNOS; E-selectin; endothelium-dependent dilation; endothelium-independent dilation.; Rheumatology; Reumatologi;

   Sammanfattning : In systemic sclerosis (SSc), interstitial lung disease (ILD) and engagement of the vascular system lead to increased morbidity and mortality. The aim of this thesis was to elucidate, in a consecutively included cohort of SSc (limited and diffuse) patients (n = 33), the T cell cytokine profile driving the disease in ILD and to explore the role of matrix metalloproteinase 9 (MMP-9) and its inhibitor: tissue inhibitor of metalloproteinase 1 (TIMP-1) in the extracellular matrix (ECM) degrading process leading to fibrous scarring and honey combing. LÄS MER

5. 19. Peripheral and central factors in the pathophysiology of irritable bowel syndrome

   Författare :Iris Posserud; Göteborgs universitet; []
   Nyckelord :irritable bowel syndrome IBS ; visceral perception; rectal perception; visceral hypersensitivity; gastrointestinal symptoms; hypervigilance; selective attention; stress; small intestinal bacterial overgrowth; rectal barostat; small bowel motility; gastrointestinal dysmotility;

   Sammanfattning : Irritable bowel syndrome (IBS) is a functional gastrointestinal (GI) disorder characterized by abdominal pain and/or discomfort together with abnormal bowel habits. The pathophysiology is complex and incompletely understood. LÄS MER

7. 20. Diabetes mellitus and heart failure : registry based studies on risk factors, prognosis and impact of treatment

   Författare :Isabelle Johansson; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : Heart failure and diabetes is a common combination. In the presence of diabetes heart failure prognosis becomes very serious, but the exact reasons are not understood. LÄS MER