Search for dissertations about: "species differences"

Showing result 1 - 5 of 582 swedish dissertations containing the words species differences.

  1. 1. Adrenocorticolysis Induced by 3-MeSO2-DDE Mechanisms of Action, Kinetics and Species Differences

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Veronica Lindström; Uppsala universitet.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Toxicology; 3-methylsulphonyl-DDE; o; p -DDD; CYP11B1; adrenal cortex; tissue-specific toxicity; bioactivation; kinetics; Y-1 cells; Toxikologi; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi;

    Abstract : The DDT metabolite 3-methylsulphonyl-DDE (3-MeSO2-DDE) induces cell death specifically in the adrenal cortex of mice after a cytochrome P45011B1 (CYP11B1)-catalysed bioactivation. This substance is not only an environmental pollutant, but also a suggested lead compound for an improved chemotherapy of adrenocortical carcinoma (ACC). READ MORE

  2. 2. Diurnal variation of stratospheric short-lived species

    University dissertation from Chalmers University of Technology

    Author : Maryam Khosravi; Chalmers tekniska högskola.; Chalmers University of Technology.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Arctic stratosphere; chlorine monoxide; tropical middle stratosphere; Arctic ClO; diurnal variation; short-lived species;

    Abstract : Diurnal variation of stratospheric short-lived species Maryam Khosravi Chalmers University of Technology Department of Earth and Space Sciences Abstract The depletion of ozone in the stratosphere has a direct impact on the amount of ultraviolet radiation reaching the Earth’s surface. The ozone abundance and distribution is controlled by the photo-chemical reactions and catalytic cycles involving halogens (chlorine and bromine), odd hydrogen and odd nitrogen species as well as by atmospheric transport. READ MORE

  3. 3. Effects of climate change on boreal wetland and riparian vegetation

    University dissertation from Institutionen för ekologi, miljö och geovetenskap, Department of Ecology and Environmental Sciences

    Author : Lotta Ström; Umeå universitet.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; biomass; flooding; hydrologic niche; invasibility; riparian zone; riparian plant species; river margin; climate scenario; seed sowing experiment; species composition; species richness; transplant experiment; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology Terrestrial ecology; NATURVETENSKAP Biologi Terrestrisk; limnisk och marin ekologi Terrestrisk ekologi;

    Abstract : Models of climate change predict that temperature will increase during the 21th century and the largest warming will take place at high northern latitudes. In addition to warming, predictions for northern Europe include increased annual precipitation and a higher proportion of the precipitation during winter falling as rain instead of snow. READ MORE

  4. 4. Speciation genetics of recently diverged species

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Venkat Talla; Uppsala universitet.; [2018]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Speciation; Leptidea; Lepidoptera; chiffchaff; Cryptic species; genome-scan; Diapause; Biology with specialization in Evolutionary Genetics; Biologi med inriktning mot evolutionär genetik;

    Abstract : Species differentiation can be a consequence of evolutionary forces including natural selection and random genetic drift. Patterns of genomic differentiation vary across the tree of life. This variation seems to be dependent on, for example, differences in genomic architecture and molecular mechanisms. READ MORE

  5. 5. Possibilities to Utilize Species from the Mozambican Forest Biomass for the Production of Essential Oils : Study of Eucalyptus and Pinus Species and Application of Citronellal as Raw Material for Flavour Chemistry

    University dissertation from Stockholm : Kemi

    Author : Felisberto P. Pagula; KTH.; [2004]
    Keywords : Eucalyptus species; essential oil composition; citronellal; hydroxycitronellal;

    Abstract : This thesis deals partly with the isolation and chemicalanalysis of essential oils from selected Eucalyptus and Pinusspecies grown in Mozambique, and partly with the synthesis ofmore valuable compounds from citronellal isolated fromEucalyptus citriodora Hook oil.More than 60 constituents in the volatile oils wereidentified by gas chromatography and gas chromatography-massspectrometry by comparison with authentic substances andliterature data. READ MORE