Search for dissertations about: "C and N cycling"
Showing result 1 - 5 of 46 swedish dissertations containing the words C and N cycling.
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1. Allopregnanolone effects in women : clinical studies in relation to the menstrual cycle, premenstrual dysphoric disorder and oral contraceptive use
Abstract : Background: Premenstrual dysphoric disorder (PMDD) affects 3–8% of women in fertile ages. Combined oral contraceptives (OCs) are widely used and some users experience adverse mood effects. The cyclicity of PMDD symptoms coincides with increased endogenous levels of allopregnanolone after ovulation. READ MORE
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2. Physiology of Adventure Racing : with emphasis on circulatory response and cardiac fatigue
Abstract : The overall aims of this thesis were to elucidate the circulatory responses to ultra-endurance exercise (Adventure Racing), and furthermore, to contribute to the clarification of the so called “exercise-induced cardiac fatigue” in relation to said exercise. An Adventure race (AR) varies in duration from six hours to over six days, in which the participants have to navigate through a number of check-points over a pre-set course, using a combination of three or more endurance/outdoor sports, e. READ MORE
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3. Mitochondria, contractility and Ca2+ handling : cardiac and skeletal muscle adaptations in health and disease
Abstract : Contractility is a fundamental feature of skeletal and cardiac muscles. An indispensable step in the cellular signal for contraction is a transient elevation in cytoplasmic free [Ca2+] ([Ca2+]i). Both the production of contractile force and Ca2+ handling processes are highly energy demanding. READ MORE
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4. The Nitrogen Cycle in Soil - Climate Impact and Methodological Challenges in Natural Ecosystems
Abstract : Nitrogen (N) is a fundamental element for life, and limiting in many terrestrial ecosystems. In non-N-fertilized ecosystems, the N inputs can be low, and the nutrient availability for plants is determined by the internal cycling of N. READ MORE
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5. Varved lake sediments and diagenetic processes
Abstract : Varved (annually laminated) sediments are of great interest for inference of past environmental conditions, as they provide dated records with high time resolution. After deposition, the sediment varves are affected by diagenesis; i.e., chemical, physical and biological changes that occur within the sediment. READ MORE