Sökning: "Effects of SO2"

Visar resultat 16 - 20 av 40 avhandlingar innehållade orden Effects of SO2.

1. 16. Assessment of chest physiotherapy in children

   Författare :Anna-Lena Lagerkvist; Göteborgs universitet; []
   Nyckelord :adolescent; airway disease; chest clapping; chest physiotherapy; child; cystic fibrosis; infant; mucus; multiple severe disabilities; non-cooperative; PEP; oscillating PEP; transcutaneous blood gas analysis;

   Sammanfattning : Chest physiotherapy (CPT) is used to improve the lung function and blood gas tensions in individuals with respiratory disease. The aim of this thesis was to assess and compare immediate effects of CPT with positive expiratory pressure (PEP) and oscillating PEP (OscPEP) on blood gas tensions in patients with cystic fibrosis (CF), to assess effects of CPT with PEP in severely disabled children, to describe and evaluate a new CPT method for children who cannot co-operate, and to compare obtained results with chest clapping. LÄS MER

3. 17. Application of scattered sunlight spectroscopy for quantification of gas emissions from anthropogenic and natural sources

   Författare :Claudia Rivera; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; anthropogenic sources; gas emission; volcanoes; sulphur dioxide; DOAS; nitrogen dioxide.; scattered sunlight spectroscopy; natural sources;

   Sammanfattning : Monitoring of gas emissions from natural and anthropogenic sources is of importance due to their negative effects on human health, atmospheric quality and ecosystems. Concern over air pollution has increased the need to develop measurement techniques suitable for gas flux determination. LÄS MER

4. 18. Optical remote sensing of industrial gas emission fluxes

   Författare :John Johansson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; optical remote sensing; DOAS; gas emission; absorption spectroscopy; VOC; flux measurement; solar occultation; FTIR; formaldehyde;

   Sammanfattning : Mobile optical remote sensing techniques offer promising possibilities to quantify and geographically attribute local industrial gaseous emissions to the atmosphere. Studies have repeatedly shown that such emissions are often poorly understood, underestimated, and thereby not properly accounted for in emission inventories and regional atmospheric chemistry models, especially for emissions of VOCs. LÄS MER

5. 19. Optical remote sensing of industrial gas emission fluxes

   Författare :John Johansson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; DOAS; formaldehyde; optical remote sensing; gas emission; absorption spectroscopy; solar occultation; VOC; flux measurement; FTIR;

   Sammanfattning : Mobile optical remote sensing techniques offer promising possibilities to quantify and geographically attribute local industrial gaseous emissions to the atmosphere. Studies have shown that such emissions are often poorly understood, underestimated, and thereby not properly accounted for in emission inventories and regional atmospheric chemistry models, especially for emissions of VOCs. LÄS MER

7. 20. Atmospheric Corrosion of Lead. The Influence of Organic acid Vapours and Inorganic Air Pollutants. A contribution Towards Understanding the Environmental Degradation of Historic Organ Pipes

   Författare :Annika Niklasson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; organ pipe; formic acid; Atmospheric corrosion; lead formate; lead acetate; NaCl; lead; acetic acid;

   Sammanfattning : This thesis presents different perspectives on the atmospheric corrosion of lead, aiming at a better understanding of the environmental degradation of historical organ pipes. Corroded organ pipes from the field have been analyzed and the environment inside the organ wind system has been mapped. LÄS MER