Search for dissertations about: "Nitrogen Dioxide"

Showing result 1 - 5 of 127 swedish dissertations containing the words Nitrogen Dioxide.

  1. 1. Molecular Beam Studies of Interactions Between Ice Surfaces and Atmospherically Relevant Molecules

    University dissertation from Göteborg : Chalmers University of Technology

    Author : Liza Romero Lejonthun; Göteborgs universitet.; Gothenburg University.; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; molecular beam; surface; surface scattering; collision; water ice; ice; chlorine; nitrogen oxides; nitrogen monoxide; nitrogen dioxide; dinitrogen tetroxide; dinitrogen pentoxide; nitric acid; helium; graphite;

    Abstract : The discovery of the ozone hole over Antarctica in 1985 was one of the environmental issues that attracted most attention worldwide in the end of the last century. The cause of the ozone hole formation was proven to be coupled to the emission of chlorofluorocarbons (CFCs). READ MORE

  2. 2. Remote Measurements of Ship Emissions

    University dissertation from Göteborg : Chalmers University of Technology

    Author : Niklas Berg; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; airborne; Ship emissions; sulphur dioxide; nitrogen dioxide; DOAS; in situ measurements; carbon dioxide;

    Abstract : The combustion of sulphur-containing fossil fuels gives rise to emissions of sulphurdioxide. Nitrogen oxides are also emitted when fuels are burned. The InternationalMaritime Organization (IMO) has ratified regulations regarding Sulphur Fuel Content(SFC) and NOx emissions from the shipping sector. READ MORE

  3. 3. Porous Cerium Dioxide for Catalytic Applications

    University dissertation from Department of Materials Chemistry, Lund University

    Author : Mats Lundberg; Lunds universitet.; Lund University.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; materialteknik; Chemical technology and engineering; Kemiteknik och kemisk teknologi; Materiallära; Material technology; catalysis; transmission electron microscopy; macroporous; mesoporous; cerium dioxide; zirconium dioxide;

    Abstract : Mesoporous cerium dioxide with high crystallinity has been synthesized and studied by TEM, SEM, nitrogen adsorption, PXRD, AFM, and SAXS. The catalytic properties of the materials have been investigated The results of the catalysis experiments were correlated with high resolution TEM investigations of the corresponding material, and it was found that the exposed crystallographic facets play an important role in the conversion of carbon monoxide to carbon dioxide. READ MORE

  4. 4. Acclimation of plants to combinations of abiotic factors connecting the lab to the field

    University dissertation from Umeå : Umeå University

    Author : Zsofia Réka Stangl; Umeå universitet.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; nitrogen; carbon dioxide; temperature; thermal acclimation; mycorrhiza; boreal forest; climate change; C:N balance; allocation; respiration; photosynthesis; terrestrial biosphere model;

    Abstract : Increasing atmospheric CO2 and other greenhouse gasses coupled to the accelerated rate of global warming puts plants and ecosystems under the strain of a rapidly changing abiotic environment. Understanding the impacts of changing global climate is a strong focus of plant science and the establishment of more resilient crop variants is an important goal for breeding programs. READ MORE

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

    University dissertation from Umeå : Umeå University

    Author : Claudia Rivera; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; anthropogenic sources; gas emission; volcanoes; sulphur dioxide; DOAS; nitrogen dioxide.; scattered sunlight spectroscopy; natural sources;

    Abstract : 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. READ MORE