Browsing Doctoral theses (MINA) by Title
Now showing items 66-85 of 106
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Marine transport modeling of radionuclides using a dynamic speciation approach
(PhD Thesis;2019:42, Doctoral thesis, 2019)Anthropogenic radionuclides are introduced to the marine environment from many sources, such as atmospheric fallout, direct releases from nuclear installations (either via operational or accidental discharges) and indirectly ... -
Microplastic particles from roads and traffic : occurrence and concentrations in the environment
(PhD Thesis;2022:34, Doctoral thesis, 2022)The impact of roads and traffic on the environment have been studied for several decades, and negative impact on both the terrestrial and aquatic environment from pollutants have been demonstrated. Road pollution is typically ... -
Mitigation of greenhouse gas emissions by pH management of agricultural soils in Norway
(PhD thesis;2023:2, Doctoral thesis, 2023)Liming has been and still is used to neutralize soil acidity, improve soil nutrient availability, increase yields, and recently it has been recognized as a possible nitrous oxide (N2O) mitigation tool for arable soils. ... -
Mobility of naturally occurring radionuclides and stable elements in alum shale : a case study of Gran, Highway 4, Norway
(PhD Thesis;2019:72, Doctoral thesis, 2019) -
Modelling and estimating tree and forest resources of the Dry Afromontane forests in South-central Ethiopia using field and remotely sensed data
(PhD Thesis;2020:58, Doctoral thesis, 2020)For effective forest management missions, the presence of accurate information about the forest resources is indispensable. However, the absence of such relevant information for most natural forests in Ethiopia have been ... -
Modelling forest sector impacts of increased use of wood-based bioenergy in Europe and US South
(PhD Thesis;2019:01, Doctoral thesis, 2019)The European Union (henceforth, EU) is now well on track to meet the 2020 targets for renewable energy production and consumption, and recently a new 2030 Framework for climate and energy has been proposed. The forest ... -
Modelling infiltration dynamics in the frozen unsaturated zone : implications for flood hazard
(PhD thesis;2024:25, Doctoral thesis, 2024)This PhD research investigated numerical modelling of frozen soil, implications of soil freezing on infiltration, snowmelt flooding in an agricultural landscape, and literature on soil freezing physics. The main goal was ... -
Modelling radionuclide transfer along terrestrial food-chains : conceptual enhancements and region-specific adaptations
(PhD thesis;2024:74, Doctoral thesis, 2024)Models are one of the key tools employed by emergency and response organizations. They play an important role in the assessment of the potential consequences of a nuclear accident and prognosis of its possible progression. ... -
Nitrous oxide emission and turnover in arable cropping in South East Norway
(PhD Thesis;2020:18, Doctoral thesis, 2020)Nitrogen is essential for all life on Earth. With an increasing global population, the use of reactive nitrogen has increased over the last century, resulting in increasing nitrogen pollution. Leaching of nitrate (NO3-) ... -
Nordic district heating and energy system flexibility : challenges and opportunities
(PhD Thesis;2019:81, Doctoral thesis, 2019)This thesis presents framework conditions for Nordic district heating and barriers and opportunities for flexibility in the district heating – electricity interface. District heating has advantages and disadvantages. ... -
A novel framework for coupling mesoscale and steady-state CFD models for wind resource assessment
(PhD Thesis;2020:30, Doctoral thesis, 2020)The estimation of the energy production of wind farms is a key factor for the development of wind energy projects. Currently, these estimations utilize only a few onsite measurement points to estimate the wind resource at ... -
Novel organic contaminants in recycled organic waste and their fate in a mushroom production system
(PhD thesis;2024:3, Doctoral thesis, 2024)Biogas production is a common treatment method for organic waste in Norway. The waste is anaerobically degraded, to stabilize the waste and to produce renewable energy (biogas). Most of the nutrients in the waste are ... -
On-site treatment options for recovery of nutrients in dry toilets
(PhD Thesis;2022:48, Doctoral thesis, 2022)Animal and human excreta had a major role in the development of agriculture in the past, but their role was lost with the development of the modern waterborne sanitation and inorganic fertilizers. To re-envision human ... -
Participant experiences in wildlife watching tourism
(PhD Thesis;2021:43, Doctoral thesis, 2021)This dissertation contributes to the wildlife watching tourism literature by investigating which elements are important to participants’ overall experiences and how these elements can contribute to the desired outcomes ... -
Performance degradation studies on field-aged solar photovoltaic modules
(PhD Thesis;2018:84, Doctoral thesis, 2018)Solar photovoltaic (PV) technology, in its variant forms, has evolved over the last four decades to become a mainstream energy technology for terrestrial applications, and is already playing an important role in national ... -
Performance of a photovoltaic-thermal system in a tropical environment of central Ghana
(PhD Thesis;2022:14, Doctoral thesis, 2022)Access to energy has been heavily linked to socio-economic development. It is therefore not surprising that the energy poverty in sub-Saharan Africa has affected development in the subregion. However, as development ... -
Phenology, growth and metabolism of two northern deciduous tree species in relation to temperature and light conditions
(PhD Thesis;2016:33, Doctoral thesis, 2020-11-19)In temperate climates, phenological transitions in tree species allow survival through adverse climatic conditions in winter. Seasonal change is sensed through shifting patterns in daylength, temperature and light quality. ... -
Quantification of genetic and epigenetic variation in phenology and growth in Norway spruce
(PhD Thesis;2020:39, Doctoral thesis, 2020)Norway spruce is a key forest tree species with high economic and ecological importance in northern Europe. Climate change creates a potential for increased productivity but can cause maladaptation of long‐lived trees to ... -
Reduction of environmental impacts through optimisation of biogas value chains : drivers, barriers and policy development
(PhD Thesis;2018:6, Doctoral thesis, 2018)Biogas production from anaerobic digestion of organic resources can potentially contribute to a reduction in greenhouse gas emissions in several sectors and can play a central role in both the bioeconomy and the circular ... -
Risk and uncertainties incorporated in the management of root and butt rot infected forest areas
(PhD Thesis;2022:75, Doctoral thesis, 2022)Root and Butt Rot (RBR) caused by the pathogenic fungi Heterobasidion spp. is a significant problem affecting Norway's main coniferous tree species, Norway spruce (Picea abies L. Karst) and Scots pine (Pinus sylvestris ...