Blar i Doctoral theses (MINA) på tittel
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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 ... -
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-) ... -
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. ... -
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 ... -
The role of biotic and abiotic factors on treeline ecotone dynamics : studies using field observations and remote sensing
(PhD Thesis;2022:35, Doctoral thesis, 2022)With global warming, the forest extent is expected to change, and the transition zone between the upper forest boundary and treeless alpine landscape (i.e., the treeline ecotone) is expected to migrate to higher elevations. ... -
Saproxylic insects influence community assembly and succession of fungi in dead wood
(PhD thesis;2017:88, Doctoral thesis, 2017)Insekter og sopp utgjør en stor andel av alle arter på landjorda, og leverer viktige økosystemtjenester som pollinering, karbonlagring og nedbrytning. Sopp er spesielt viktig for nedbrytning av plantemateriale, siden de ... -
Sensitivity analyses of the weather research and forecasting model for wind resource assessment in coastal Ghana
(PhD Thesis;2019:105, Doctoral thesis, 2019)With the rise of modern wind turbines, wind energy has grown to become a major source of generated electricity, alongside other renewable and conventional energy sources. The geographical and time dependent nature of wind ... -
Silver nanomaterials in aquatic systems : linking uptake and effects in biota to exposure characterization
(PhD Thesis;2019:10, Doctoral thesis, 2019)The potential environmental impacts of engineered nanomaterials (ENMs) have received increased attention over the last decades. While the benefits of the development and use of ENMs are numerous (e.g., improved medical ... -
Socioeconomics and governance of exclosures in Tigray, Northern Ethiopia
(PhD Thesis;2018:90, Doctoral thesis, 2018)Land degradation and deforestation problems exists across sub-Saharan Africa in general and these remained as the major environmental problems in the Tigray region for many years. The joint effort of the regional government ... -
Soil carbon storage in the forest-tundra ecotone : insights from field- and remotely sensed data
(PhD Thesis;2023:84, Doctoral thesis, 2023)Due to climate warming, forests are moving to higher elevations and latitudes at the expense of treeless tundra. Recent studies suggest that these vegetation shifts promote soil organic carbon (SOC) losses that exceed ... -
Soundscape analysis for biodiversity monitoring in tropical rainforest ecosystems
(PhD Thesis;2023:71, Doctoral thesis, 2023)Tropical rainforests harbour up to 66% of the world’s terrestrial biodiversity but have been reduced in extent by up to 60% due to persistent deforestation and forest degradation, resulting in the population decline or ... -
Strategies for increasing sustainability of wheat (Triticum aestivum L.) and faba bean (Vicia faba L.) production : effect of composts, rotation and biofertilizers
(PhD Thesis;2023:21, Doctoral thesis, 2023)An increasing human population poses extraordinary challenges on agricultural production. Feeding an estimated 10 billion people by 2050 requires more food with good nutritious value. Synthetic fertilizers and herbicides ...