Search for dissertations about: "demographical"
Showing result 1 - 5 of 30 swedish dissertations containing the word demographical.
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1. Population dynamics of a perennial herb (Plantago maritima L.) along a distributional gradient : a demographical study
Abstract : In order to explain density distribution and provide the basis for further research on life history phenomena, the demography of Plantago maritima is described along a distributional gradient from mean water level to the epilitoral. The results seem to suggest that the factors affecting distribution are differences in 1. READ MORE
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2. Per- and polyfluoroalkyl substances (PFAS) – unravelling exposure sources and demographical exposure patterns in a Swedish adolescent population
Abstract : Per- and polyfluoroalkyl acids (PFAS) is a group of anthropogenic substances, with some suspected to cause adverse health effects in humans. Little is known about adolescent exposure to PFAS, thus this thesis focuses on exposure sources and demographical exposure patterns of PFAS in a nationally representative Swedish adolescent (age 10-21 years) population (Riksmaten Adolescents 2016-17). READ MORE
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3. Tumour stromal and demographical factors affecting the metastatic aggressiveness of small differentiated papillary thyroid cancers in Sweden
Abstract : Background: The incidence of papillary thyroid cancer (PTC) has been increasing over the recent decades, especially that of small papillary thyroid cancers (sPTCs) (≤ 20mm in size). sPTCs are generally classified as low risk cancers with a very favourable diagnosis, yet some of these cancers still cause locoregional and distant metastasis, recurrence and even death. READ MORE
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4. Breakfast habits among European adolescents : The Healthy Lifestyle in Europe by Nutrition in Adolescence (HELENA) Study
Abstract : The aim of this thesis was to study the associations of individual and socio-environmental factors with breakfast habits among adolescents on a European level. Methods: The HELENA-study (Healthy Lifestyle in Europe by Nutrition in Adolescence) is a multi-centre cross-sectional, school-based study including 3528 adolescents (aged 12.5-17. READ MORE
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5. The population dynamics of Spergularia marina on a Baltic seashore meadow
Abstract : This thesis presents the demography and population dynamics of the annual halophyte Spergularia marina on a Baltic seashore meadow. The object of the investigation was to study the variation in demographical attributes by using a site-by-site comparison during four consecutive years. READ MORE