Sökning: "ultraviolet radiation"
Visar resultat 1 - 5 av 102 avhandlingar innehållade orden ultraviolet radiation.
- Detta är en avhandling från Stockholm : Karolinska Institutet, Dept of Clinical Neuroscience
Sammanfattning : Cataract is the leading cause of blindness in the world. Epidemiological and experimental evidence supports a link between mid-range ultraviolet radiation (UVR-B) exposure and the development of cataract. LÄS MER
- Detta är en avhandling från Stockholm : Karolinska Institutet, Department of Clinical Sciences
Sammanfattning : Cataract is the major cause of low vision and blindness in the world. Epidemiological and experimental studies link cataract to (solar) ultraviolet radiation (UVR) exposure. Current safety limits of UVR exposure are based on animal experiments, but many factors are less well known in UVR cataractogenesis. LÄS MER
- Detta är en avhandling från Stockholm : Karolinska Institutet, -
Sammanfattning : Results. UVR at subthreshold doses did not produce any corneal damage that could be detected in the light microscope. Apoptosis was detected to be one important mechanism leading to corneal cell damage after UVR exposure at photokeratitis doses. Photokeratitis doses at 270, 280, and 290 inn led to a superficial corneal damage. LÄS MER
- Detta är en avhandling från Section of Plant Physiology, Lund University, P.O. Box 117. S-221 00 Lund Sweden
Sammanfattning : This thesis examines the effects of artificial and solar ultraviolet radiation on photosynthesis, growth rate, phototactic orientation and motility of marine phytoplankton. The effects of UV-B (280-320 nm) radiation in combination with humic substances, as well as the ability of the organisms to adapt and/or recover from exposure to UV-B radiation, were also investigated. LÄS MER
- Detta är en avhandling från MAX IV Laboratory, Lund University
Sammanfattning : Popular Abstract in English Among the large variety of experiments performed in science, a common one is to pass a light beam through a sample, the object to be studied, and to study the outcomes of the light-sample interaction. Many light sources have been used for this purpose, like light bulbs and lasers. LÄS MER