Sökning: "Sunlight"

Visar resultat 21 - 25 av 148 avhandlingar innehållade ordet Sunlight.

  1. 21. Occupational exposure to electromagnetic fields and chronic diseases

    Författare :Niclas Håkansson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Electromagnetic fields; chronic diseases; epidemiology; occupation; cancer diseases; neurodegenerative diseases; cardiovascular diseases.;

    Sammanfattning : This thesis consider two exposures from the electromagnetic spectrum extremely low-frequency magnetic fields (ELF MF) and ultraviolet (UV) radiation. ELF MF are the lowest and UV radiation ranges among the highest frequencies of non-ionizing radiation. The exposure prevalence of these fields is high in the general population. LÄS MER

  3. 22. An exploration of freshwater microbial ecology : from streamlined genera to global networks

    Författare :Rhiannon Mondav; Stefan Bertilsson; Phyllis Lam; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; microbiology; ecology; networks; streamlined; aquatic; Biology with specialization in Limnology; Biologi med inriktning mot limnologi;

    Sammanfattning : Microbes are the main drivers of biogeochemical cycles on Earth and even though freshwaters cover only a small area of terrestrial surfaces their contribution to global cycles is important. Global cycles are measured by exchanges between systems e.g. water to atmosphere or lithosphere and are mediated by microbial communities. LÄS MER

  4. 23. Arabidopsis thaliana as a model organism from a biochemical perspective and The use of early light-induced proteins as a light stress marker

    Författare :Hanna Norén; Gunnar Öquist; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biochemistry; Biokemi; biokemi; Biochemistry;

    Sammanfattning : In the photosynthetic process higher plants, green algae and cyanobacteria convert light energy from the sun into carbohydrates, products essential to maintain life on earth. Even though sunlight is an essential condition for life it can also cause damage to plants. LÄS MER

  5. 24. Famine in Nigeria and vitamin D in Sweden : two early life exposures and their relation to cardiovascular risk in adulthood

    Författare :Peter Ueda; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Early life environment has in previous research been linked to risk of disease in adulthood. This thesis investigated three types of early life exposures and their potential associations with adult life cardiovascular risk. LÄS MER

  7. 25. Accumulative Charge Separation in Photocatalysis : From Molecules to Nanoparticles

    Författare :Mariia Pavliuk; Jacinto Sá; Leif Hammarström; Gary Brudvig; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Accumulative charge separation; Electron transfer; Plasmon dynamics; Time-resolved spectroscopy; Photocatalysis.; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi;

    Sammanfattning : Photochemical energy conversion into solar fuel involves steps of light absorption, charge separation and catalysis. Nature has taught us that the effective accumulation of redox equivalents and charge separation are the key steps in sunlight conversion. LÄS MER