Sökning: "ultraviolet light"
Visar resultat 11 - 15 av 144 avhandlingar innehållade orden ultraviolet light.
11. Towards ultrafast imaging with extreme ultraviolet light sources
Sammanfattning : This thesis reports experimental studies performed with two advanced coherent XUV sources with ultrashort pulse duration, high-order harmonic generation and seeded-free electron laser. High-order harmonic generation (HHG) is the generation of overtones of a fundamental laser pulse in a medium, e.g. noble gases. LÄS MER
12. Ultraviolet light, autoimmune disorders and the etiology of malignant lymphomas
Sammanfattning : Malignant lymphomas constitute a clinically and morphologically diverse group of malignancies that may also differ etiologically. The incidence of the most common non-Hodgkin lymphomas (NHL) has increased dramatically worldwide during the past decades. LÄS MER
13. Plumage Colours and the Eye of the Beholder : The Ecology of Colour and its Perception in Birds
Sammanfattning : Virtually all diurnal birds have tetrachomatic vision based on four different colour receptors. As a result, birds are potentially able to perceive their environment in twice as many colours as humans and four times as many colours compared to most other mammals, which are dichromatic. LÄS MER
14. Genomic mutational heterogeneity in cancer. lmproved models and tools for driver gene detection
Sammanfattning : Cancer is a disease that is strongly related to evolution, as mutations that confer a benefit to individual cells face positive selection and eventually lead to tumorigenesis. As such, the search for genes that drive cancer development entails distinguishing positive selection from other sources of increased mutation rates, which requires detailed knowledge of how normal mutation rates vary across the genome. LÄS MER
15. Computational studies of mutational sequence signatures in cancer genomes
Sammanfattning : Cancer typically forms when mutational processes modify key cancer driver genes, resulting in positive selection and tumor growth. As such, mutational processes are at the core of the disease. Trinucleotide mutational signatures have emerged in the last decade as essential tools for analysis of mutational processes. LÄS MER
