Search for dissertations about: "environmental stress"

Showing result 6 - 10 of 597 swedish dissertations containing the words environmental stress.

  2. 6. Coping with Stress : Regulation of the Caulobacter crescentus cell cycle in response to environmental cues

    Author : Kristina Heinrich; Kristina Jonas; Emanuele Biondi; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Caulobacter crescentus; bacteria; cell cycle; stress; filamentation; cell morphology; DNA replication; cell division; molekylär biovetenskap; Molecular Bioscience;

    Abstract : All organisms have to respond to environmental changes to maintain cellular and genome integrity. In particular, unicellular organisms like bacteria must be able to analyze their surroundings and rapidly adjust their growth mode and cell cycle program in response to environmental changes, such as changes in nutrient availability, temperature, osmolarity, or pH. READ MORE

  4. 7. Subjective annoyance attributed to electrical equipments and smells - Epidemiology and stress physiology

    Author : Frida Eek; Avdelningen för arbets- och miljömedicin; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; environmental intolerance; IEI; epidemiology; diabetology; secreting systems; Endocrinology; cortisol; stress; sekretion; Endokrinologi; Public health; diabetologi; Folkhälsa; epidemiologi; Occupational health; Yrkesmedicin; industrial medicine; arbetsmiljömedicin; Environmental health; Miljömedicin;

    Abstract : Self-reported annoyance from electrical equipment has been in evidence since the mid-eighties, and the first reports of illness from everyday chemicals arose already in the 1960?s. However, the extent of the problem or the mechanisms behind the development of environmentally related annoyance has not yet been fully established. READ MORE

  5. 8. Bacterioplankton in the light of seasonality and environmental drivers

    Author : Carina Bunse; Jarone Pinhassi; Linnéuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; marine bacteria; marine microbiology; seasonal succession; ocean acidification; proteorhodopsin; photoheterotrophy; microbial time series; Akvatisk ekologi; Aquatic Ecology; Mikrobiologi; Microbiology; Miljövetenskap; Environmental Science;

    Abstract : Bacterioplankton are keystone organisms in marine ecosystems. They are important for element cycles, by transforming dissolved organic carbon and other nutrients. Bacterioplankton community composition and productivity rates change in surface waters over spatial and temporal scales. READ MORE

  6. 9. Impact of root and mycorrhizal exudation on soil carbon fluxes : influence of elevated CO2 and metals

    Author : Emma M. Johansson; Patrick van Hees; Bert Allard; Phil Ineson; Örebro universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; amino acids; 13C; carbon cycle; ectomycorrhiza; elevated CO2; exudation; DOC; LMWOA; metal stress; monosaccharides; oxalate; Pinus sylvestris; saprotrophic fungi; soil respiration; NATURAL SCIENCES; NATURVETENSKAP; Environmental chemistry; Miljökemi; Enviromental Science; Miljövetenskap;

    Abstract : The thesis concerns the behavior of root and ectomycorrhizal (ECM) exudates. In particular, the dynamics of soluble low molecular weight (LMW) organic compounds such as organic acids (LMWOAs), amino acids, monosaccharides, and dissolved organic carbon (DOC) have been studied. READ MORE

  7. 10. Psychophysiological reactions to experimental stress : relations to pain sensitivity, position sense and stress perception

    Author : Marina Heiden; Eugene Lyskov; Tohr Nilsson; Ulf Lundberg; Umeå universitet; []
    Keywords : public health; autonomic activity; cognitive-behavioral training; muscle oxygenation; physical activity; position sense; pressure-pain thresholds; sick leave; stress; Occupational and Environmental Medicine; arbets- och miljömedicin;

    Abstract : Stress and monotonous work contribute substantially to the development of chronic musculoskeletal disorders. Yet, the pathophysiological mechanisms underlying the process, particularly the involvement of autonomic regulation, remain unclear. READ MORE