Sökning: "time-trend analysis"
Visar resultat 1 - 5 av 16 avhandlingar innehållade orden time-trend analysis.
1. Analysis of Perfluoroalkyl Acids in Swedish Biota : Temporal trends, tissue distribution and toxicity
Sammanfattning : Perfluorinated alkyl acids (PFAS) are ubiquitous environmental contaminants. They are found in high concentrations in top predators worldwide, with perfluorooctane sulfonate (PFOS) as the predominant compound. LÄS MER
2. Developing tools for non-target analysis and digital archiving of organic urban water pollutants
Sammanfattning : This thesis describes efforts to develop robust methods for the creation and use of digital archives of environmental samples, and proposes guidelines based on the results. Digital archives are repositories that store environmental samples digitally. LÄS MER
3. Symptoms, prehospital delay and long-term survival in men vs. women with myocardial infarction : a combined register and qualitative study
Sammanfattning : The general aim of this thesis was to study symptoms, prehospital delay and time trends in long-term survival in men and women with myocardial infarction (MI). The study was based on quantitative and qualitative data collections. LÄS MER
4. Removal processes in sewage treatment plants : Sludge quality and treatment efficiency of structurally diverse organic compounds
Sammanfattning : Large and ever-increasing numbers of chemicals, including large quantities of a broad spectrum of organic compounds are used in modern society. More than 30 000 of the more than 100 000 chemical substances registered in the EU are estimated to be daily used, of which many will be discharged into the waste-streams handled by municipal sewage treatment plants (STPs). LÄS MER
5. Reproductive function in young Swedish men - Time trend, prenatal and adult exposure to smoking and phthalates
Sammanfattning : A decrease in male reproductive function, including sperm counts, during the second half of the 20th century, has been postulated. During this period, testicular cancer has increased several-fold. Environmental and lifestyle-related factors have been proposed as explanations for a possible negative trend in male reproductive function. LÄS MER