577 uppsatser · sida 17 av 39
… is considered to be the most important component for the growth of aquatic plants and leads in too large quantities to an intensification of growth. Phosphate (PO4) is the fraction of phosphorus that can easiest be taken up by plants and thus have the greatest impact on …
Med en undersökning av hårdvaxolja som diffusions-/konvektionsspärr
… in the country. Through the combined production of heat and power the CHP-plants often reaches an efficiency of 90 % from energy in the fuel to produced heat and power. In order to keep the efficiency high it is important for the owners of the plant to have good knowledge about …
En studie vid Strängnäs Energi AB
… in the country. Through the combined production of heat and power the CHP-plants often reaches an efficiency of 90 % from energy in the fuel to produced heat and power. In order to keep the efficiency high it is important for the owners of the plant to have good knowledge about …
Sveaskog Norrbotten spenderar över 50.000 liter bensin/säsong bara på skogsröjning. Utsläppen från bensindrivna röjsågar skadar bådeanvändare och miljö.Den klassiska röjsågen orsakar en ojämn belastningsom, i kombination med den höga arbetstakten vidskogsröjning, är både skadlig …
with the purpose of establishing germination protocols
… viability status, but the knowledge of seed dormancy in the cultural relict plants is often poor. The objective of this study was to investigate how seed dormancy is affected by cold stratification. The study includes 31 accessions from 28 species with the purpose of …
påverkan på ekonomi och miljö
… scenarios and set parameters freely. The user is tasked with building power plants to supply the city/region with district heating and electricity during a pre-set number of years. When the simulation is finished the result is graded in the following categories: economy …
… had a positive correlation between the number of naturally regenerated plants per hectare and the number of mother trees per hectare. The species group Dipterocarps had a generally lower regeneration capability than Other timber. Shorea generally had a lower regeneration …
En fallstudie
… (38%) and on the property value (38%). According to this study, the three plants were well located, the works do not entail any major interventions in the landscape, impact and disruption on the local environment was limited and the area can be assessed as a rugged landscape of …
Förslag till handlingsplan för minskad elanvändning på Renovas anläggning i Göteborg
… and power plant is by today's standards among the leading waste incineration plants in the world. The owners are constantly striving to improve the efficiency of the waste incineration plant. They have seen the opportunities for savings in reducing internal usage of electricity …
… 2010, limited flow in water reservoirs and low production in nuclear power plants the emissions was approximately 30 000 tonnes higher compared to the year before. By assuming a Swedish electricity mix, the case study shows that the emission per square meter is the highest in …
… appears to continue in the coming years. The majority of the new production plants are solar cells, followed by wind turbines, and it is also in these the greatest efforts are made in this paper. Distributed generation is often seen as something positive since it will contribute …
Utveckling av modell för dokumentation och elkvalitetsberäkningar
… appears to continue in the coming years. The majority of the new production plants are solar cells, followed by wind turbines, and it is also in these the greatest efforts are made in this paper. Distributed generation is often seen as something positive since it will contribute …
hur ser kunskapsläget ut hos några olika grupper människor?
… acquire energy and nutrition; one example is a mutual symbiosis with trees and plants - another being dissolving organic materials. Attempts have been made to better understand the circulation of nutrition in coniferous forests, and how fungi cooperate. Trees and plants have …
… this experiment indicate that fertilization reduces the percentage of diseased plants in an initially infected soil. Nitrogen fertilization has reduced disease index in five of six tests and urea proved to have a good effect. The amount of nitrogen has been more important than …
… the Fukushima incident it has been decided to shut down all Germanys nuclear plants. This capacity drop is however not of the same magnitude as the increase in renewables, but will impact the stability of the power system. The Nordic power system which already has a surplus of …
