Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"fysiikka"”.
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Organ dose determination in X-ray imaging
Organ dose is the absorbed radiation energy from ionizing radiation to an organ, divided by the organ mass. Organ doses of a patient cannot be measured directly in the patient, but their determination requires dose measurements in anthropomorphic patient models i.e. phantoms or Monte Carlo …
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Data assimilation and numerical modelling of atmospheric composition
Atmospheric chemistry and transport models are used for a wide range of applications which include predicting dispersion of a hazardous pollutants, forecasting regional air quality, and modelling global distribution of aerosols and reactive gases. However, any such prediction is uncertain due to …
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Meteorological Solutions to Support Wind Energy Production in Finland.
The renewable energy sources play a big role in mitigating the effects of power production on climate change. However, many renewable energy sources are weather dependent, and accurate weather forecasts are needed to support energy production estimates. This dissertation work aims to develop …
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Individualized methods for physiologically adapted radiation therapy
The rapid development of different imaging modalities related to radiation therapy (RT) has largely affected the entire RT process from the planning phase of the treatment to the final treatment delivery. Treatment planning requires accurate anatomical information that can be provided by computed …
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Holographic Superfluids and Solitons
Superfluidity is perhaps one of the most remarkable observed macroscopic quantum effect. Superfluidity appears when a macroscopic number of particles occupies a single quantum state. Using modern experimental techniques one dark solitons) and vortices. There is a large literature on theoretical …
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Sulfuric acid and amines in atmospheric clustering : first-principles investigations
The physical phenomena involving minuscule atmospheric aerosol particles pose many important and currently unresolved questions. The research presented in this doctoral dissertation concentrates on one of the most fundamental of these questions: where do the smallest particles come from? This …
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Svarta Hål i Fysikens Historia
Denna avhandling utforskar historien av svarta hål inom fysik genom att spåra utvecklingen av upptäckter, begrepp och modeller från och med Newtons Principia till och med observationerna nyligen gjorda vid LIGO (Laser Interferometer Gravitational-Wave Observatory). Arbetet är skrivet på en teknisk …