Sökning: "source isolation"

Visar resultat 1 - 5 av 75 avhandlingar innehållade orden source isolation.

  1. 1. Isolation and chemical modification of arabinoxylan and galactoglucomannan

    Författare :Linda Härdelin; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; Tg; Films; Material properties; Isolation; Etherification; Modification; PEGylation; Hemicellulose;

    Sammanfattning : Today’s society is based on the use of fossil fuels, where oil is used as transportation fuel and as raw material in the petrochemical industry. Efforts are made to increase the use of bio-based materials, since oil is a non-renewable source and a greenhouse gas contributor. LÄS MER

  2. 2. Reproductive isolation at contact zones

    Författare :Samuel Perini; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hybrid zone; gene flow; genetic variants; mating; local adaptation; marine species; speciation;

    Sammanfattning : Speciation is among the most important evolutionary processes that contribute to biodiversity. It involves the formation of new species that have become reproductively isolated through a process that is not linear and varies in time and space. LÄS MER

  3. 3. On Speciation in Birds – Genomic Signatures across Space and Time

    Författare :Martin Stervander; MEMEG; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; colonization; islands; isolation; introgressive hybridization; sympatry; natural selection; bill morphology; coalescence-based analyses; DNA sequencing; birds; divergence; Speciation;

    Sammanfattning : The process of speciation is a cornerstone in evolutionary biology. In Darwin’s On the Origin of Species, he described how he imagined that a new species would evolve to fill an empty niche. This focus on ecology shifted with Mayr towards the importance of isolation, and for many decades the geographic modes of speciation were debated. LÄS MER

  4. 4. Consequences of meticillin-resistant Staphylococcus aureus (MRSA) acquisition. Patient experiences and interactions in health care and daily life

    Författare :Eva Skyman; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MRSA; patient; experience; transmission; acquisition; source isolation; ignorance; MRSA notification card;

    Sammanfattning : Aims. The overall purpose of this thesis was to follow up the consequences of guidelines installed to prevent transmission of MRSA in healthcare from the patients’ point of view and subsequent consequences for everyday life. Methods. Patients infected with MRSA during two time-periods were studied. LÄS MER

  5. 5. Development and Evaluation of Methods in Source Apportionment of the Carbonaceous Aerosol

    Författare :Johan Martinsson; Kärnfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; carbonaceous aerosol; organic aerosol; aerosol particles; source apportionment; air pollution;

    Sammanfattning : Carbonaceous aerosols are known to affect human health negatively and to affect the climate of Earth. As specific types of aerosols originate from specific sources, it is important to know the amount of aerosols emitted from each source. Aerosol source apportionment is an important tool in mitigating air pollution and improving air quality. LÄS MER