61 uppsatser · sida 4 av 5
… done. The ecosystem services studied are the ability to absorb solar energy, biomass production, botanical diversity, decomposition and natural predation of aphids. The research has taken place at the Swedish Agricultural University's ecological experimental farm Ekhaga. Natural …
Utvärdering av kapaciteten hos en två-stegs UASB-reaktor för behandling av hushållsavloppsvatten
… COD-reduction at lower temperatures, assumed a longer contact time between biomass and waste water. In an Upflow Anaerobic Sludge Blanket (UASB) - reactor the microorganisms form granules with excellent sedimentation properties. The granules are floating with the waste water …
grundläggande studier
… many of the results are in agreement with earlier studies on densification of biomass. During the study several questions occurred like, how can pellets as a product be developed, if the composition of wood particles in the raw material is taken into account?
… state supported conversion of farmland to broadleaf forest, forest for energy biomass production, or establishment of wetlands on former farmland. The County Administrative Boards and Regional Forestry Boards together monitored the planting of broadleaf forests. The forestry …
… control. In addition, we might see agreater number of weed species and higher biomass production due to increased concentrationof CO2 in the atmosphere.Increased understanding of the biology of specific weed species will become more importantin future weed control. This will …
… bra vedegenskaper och bättre utvecklade rotsystem samt att sådder har en högre biomassaproduktion per ytenhet jämfört med planteringar. Nackdelar som kan nämnas är att de ofta täta förbanden ger ökade kostnader vid eventuella röjningar och att föryngringsresultatet är mera …
… correspondence with tree age may be related to a reduced production of needle biomass in older trees, which may reduce nutrient availability for S. scabrosus. To analyse the distribution of S. scabrosus and other red-listed ectomycorrhizal species in relation to chemical soil …
Betydelsen av antalet beviljade dispenser av stallgödselspridning vid Sagån
… recognized in the early 1900's and results in severe algal blooms, increased biomass production and eventually leads to an altered ecosystem. In Mälardalen we find the most eutrophic lakes. Most of the applied phosphorus and nitrogen into seas and oceans comes from agriculture …
… the storm Gudrun in 2005. Several studies indicatethat the production of wood biomass is higher for Sitka spruce compared to Norway spruce. The factorsthat most likely limits the use of Sitka spruce in Sweden is primarily frost, but also drought.An inventory was carried out at …
metoder och tekniker för fröskörd av industrihampa
… with higher grades are the lower seed yield and the higher volumes of plant biomass. Another problem with hemp is that the long, tough fibres that easily cause problems during threshing by becoming twisted around parts of the combine.In the future, hemp will be probably as …
an analysis of key actor’s positions in Sweden
… concerning the realization of the potential and the increased extraction of biomass from the forest for energy purposes.
Är det möjligt med biomassa, solenergi och vindkraft?
… on environmental friendly sources of energy such as sun energy, wind power and biomass of pellets. Based on knowledge from our earlier studies within our programme we have investigated the possibility of planning a net zero house in Borlänge. It turns out to be difficult to plan …
… wind or hydropower that can automatically interact with thermal energy from biomass and waste in a flexible, efficient and economical manner. The project group therefore advice HEM to urgently take steps to reserve the rights to a future aggregator role within the municipality …
… organisms of our planet. They use photosynthesis to produce ATP and gain biomass from carbon dioxide. The cyanobacteria Nostoc punctiforme is a filamentous bacterium that consists of two different types of cells, vegetative cells and heterocysts. The type of cell it …
… of an increased level of GHG in the atmosphere. By estimating available biomass in the county together with examining future technologies and emission factors for the substrates used, four possible future scenarios has been developed focusing either on electricity generation or …
