358 uppsatser · sida 7 av 24
växthusgaser, energi- och resursanvändning i modellstudie
… by adjusting control parameters such as aeration, internal recycle flow, carbon addition etc. Thus the same effluent load of ammonium and total nitrogen were reached for all scenarios compared to the reference. The simulated results showed that the total use of energy (most …
… grown and transported could be one the bigger contributors to the emission of carbon dioxide into the atmosphere. The aim of this study is to see how consumer’s choices of vegetables affect release of carbon dioxide. The results show that emissions of carbon dioxide can be …
En fallstudie om tr?dval i Pommerska tomten i Mariestad
… calculates some of the ecosystem services the tree provides. This includes carbon dioxide uptake, rainwater interception, and uptake of air pollutants. The results showed that the number of trees had a significant impact on the results. Vitality and size of the tree were also of …
miljökonsekvenser relaterade till förändrad kväveomsättning i mark
… had different chemical properties The wet alder forest had the lowest carbon nitrogen ratio and the highest nitrate to total mineral nitrogen ratio while the poor fens of flark-type had the highest carbon nitrogen ratio and the lowest nitrate to total mineral nitrogen ratio. The …
… that addition of ammonium sulphate could lead to a decreasing potential of carbon mineralisation. The study was conducted is in Skogaby, which is located in southwest Sweden in the community of Halland. Samplings of roots were made in the experimental area from the humus and …
… for aviation is the great amount of exhaust gases, mainly nitrogen oxides, carbon monoxide, carbon dioxide and hydrocarbons - mostly "greenhouse gases" leading to climate changes. I decided to sort out what is being done to decrease these problems and what regulations there are …
… saw blades. The work is based on earlier rolling experiments made with a high carbon steel grade at LuCoil Steel AB. The work also focused on the mill requirements to cold roll high strength steels. The results show that LuCoil’s existing cold rolling mill was actually designed …
… favorable for nitrification, which would be especially apparent in a lower carbon to nitrogen ratio. The pH and storage of nitrate, ammonium, total carbon, total nitrogen and exchangeable cations was analyzed in soil samples from both areas. In addition, a study of stand …
… emissions of green house gases, further on the EU has a 3-pillar strategy on carbon dioxide and cars. Included in the EU strategy is a voluntary commitment from the car industry to reduce carbon dioxide emissions from new cars. The easiest way of lowering the emissions is by …
Analyser av stabila kol- och kväveisotoper på skelettmaterial från Bjärbygravfältet från äldre romersk järnålder i Kastlösa på Öland
… Bjärby in Kastlösa parish on the island of Öland have been analysed for stable carbon and nitrogen isotopes. 21 individuals were sampled. Where possible 4 samples were taken from each individual, from the first, second and third molar respectively and from one compact bone. By …
… However the tide may turn in the future if the government decides to include carbon dioxide sinks in the Emission Trading Scheme. The government believes that storing carbon dioxide for a limited amount of time is worse than reducing actual emissions.
… which gives a wastewater with high concentrations of nutrients and organic carbon. This is partly positive, because one of the limiting factors for effective biological phosphorus removal is the lack of easily biodegradable organic carbon. The high concentrations of ammonium and …
en åtgärd för ökad TOC-reduktion hos Skoghalls Bruk luftade damm
… contaminations that is important to extract from the wastewater, is organic carbon (measured as TOC-total organic carbon) because microbiological breakdown can lead to the bottom becomig free of oxygen. The wastewater treatment at Skoghall Mill is done through an external …
tensile properties of cast iron
… different series of cast irons have been analyzed from four points of view, carbon concentration, nodularity, amount inoculation and cooling rate. After the tensile test all specimen data was analyzed in a mathematic calculation program called Matlab 2006a. These results were …
när ska miljön få en reklampaus?
The aim of the thesis was to investigate energy consumption and carbon dioxide emissions from an advertisement broadcasted on the radio or the television or distributed through press. The object was to calculate the amount of carbon dioxide emissions per individual receiver of …
