Advanced search

Showing result 1 - 5 of 7 swedish dissertations matching the above criteria.

  2. 1. Reducing Radon Gas Emissions in Concrete

    Author : Magnus Döse; Johan Silfwerbrand; Franz Josef Maringer; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Radon gas; emissions; health; concrete; building materials; ionizing radiation; Betongbyggnad; Concrete Structures;

    Abstract : 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. READ MORE

  4. 2. Consequences of Poor Housing : Essays on Urban and Health Economics

    Author : Fredrik Hansson; Matz Dahlberg; Che-Yuan Liang; Aline Bütikofer; Uppsala universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Urban; health; education; in utero; pollution; radiation; uranium; radon; housing prices; happiness; well-being; urbanization; growth; Economics; Nationalekonomi;

    Abstract : 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. READ MORE

  5. 3. Essays on Valuation of Environmental Attributes

    Author : Jakob Winstrand; Mats Wilhelmsson; Viggo Nordvik; Uppsala universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economics; Nationalekonomi;

    Abstract : 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. READ MORE

  6. 4. Nitrogenase localisation reveals cell differentiation in filamentous, non-heterocystous cyanobacteria

    Author : Charlotta Fredriksson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biology; Biologi; mikrobiologi; Microbiology;

    Abstract : 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. READ MORE

  7. 5. Pulsed laser ablation studied using digital holography

    Author : Eynas Amer; Bill O’Neill; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Experimental Mechanics; Experimentell mekanik;

    Abstract : 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). READ MORE