Sökning: "Post Impact"
Visar resultat 1 - 5 av 754 avhandlingar innehållade orden Post Impact.
1. Geochronology of impact structures - constraining syn- and post-impact processes using the 40Ar/39Ar and U-Pb techniques
Sammanfattning : The discovery, at the beginning of the 20th century, that elements can transform into other elements, due to the spontaneous decay of an instable to a stable atomic nuclei, gave rise to a powerful source for age information in many fields of earth science. For impact structures, it is crucial to establish well-defined and precise ages in order to understand how impact events affect the Earth’s geo and biosphere and also with regard to possible future events that can have devastating effects on our civilization. LÄS MER
2. The impact of cormorant nesting colonies on plants and arthropods
Sammanfattning : Seabirds concentrate large amounts of marine nutrients on their nesting islands. This nutrient input can have large consequences for island food webs and community structure. The high nutrient load may also cause runoff into surrounding waters and affect marine communities. LÄS MER
3. Nordic stakeholders and sustainable catering
Sammanfattning : Sustainability deficits in modern food systems are widely reported and changes in food habits towards more sustainable eating patterns, including eating seasonal and locally produced food, have been suggested to minimise the environmental impact of food consumption and production. By means of national programmes and recommendations, the Nordic countries have taken the initiative for public catering to use local, organic and seasonal food in an attempt to create a healthier and more sustainable catering sector. LÄS MER
4. Post Impact Vehicle Path Control in Multiple Event Accidents
Sammanfattning : Recent statistics show that multiple-event accidents (MEAs) possess an increasing fraction of all vehicle traffic accidents. They are characterized by having at least one vehicle subjected to more than one harmful event, such as collision with another vehicle. MEAs now comprise approximately 25% of all passenger vehicle accidents. LÄS MER
5. Heuristic optimization of the p-median problem and population re-distribution
Sammanfattning : This thesis contributes to the heuristic optimization of the p-median problem and Swedish population redistribution. The p-median model is the most representative model in the location analysis. LÄS MER