Sökning: "Radon gas"
Visar resultat 1 - 5 av 7 avhandlingar innehållade orden Radon gas.
1. Reducing Radon Gas Emissions in Concrete
Sammanfattning : Several compulsory regulations and recommendations regarding ionising radiation for building products have been introduced in recent years. Furthermore, industry-affiliated aggregate and concrete companies strive to implement environmental goals that should be fulfilled regarding building materials. LÄS MER
2. Consequences of Poor Housing : Essays on Urban and Health Economics
Sammanfattning : Essay I: Research shows that low fetal doses of radiation from nuclear catastrophes and atmospheric test bombings of nuclear weapons cause cognitive birth defects. These events are uncommon and the radioactive isotopes they create rarely reach harmful levels in nature. LÄS MER
3. Essays on Valuation of Environmental Attributes
Sammanfattning : This thesis consists of three self-contained essays. Essay 1. Radon is a radioactive gas which may occur in buildings and originates mainly from radioactive bedrock and radioactive building materials. In this paper we examine the willingness-to-pay for mitigation of residential radon. LÄS MER
4. Nitrogenase localisation reveals cell differentiation in filamentous, non-heterocystous cyanobacteria
Sammanfattning : This thesis deals with detecting and interpreting natural and anthropogenic changes in the composition of the Arctic troposphere. It also covers quantifications of regional climate change due to the activities of mankind. LÄS MER
5. Pulsed laser ablation studied using digital holography
Sammanfattning : Pulsed digital holographic interferometry has been used to study the plume and the shock wave generated in the laser ablation process on different targets under atmospheric air pressure. A pulsed Nd-YAG laser system (pulse duration 12 ns) has been used both for ablating the material (wavelength 1064 nm) and for measurement (wavelength 532 nm). LÄS MER