206 uppsatser · sida 11 av 14
This project investigated how elevation and vegetation type influences variation in plant litter phenolic content and protein precipitation capacity among and within common plant species for two different vegetation types, heath and meadow, in a subarctic ecosystem in the Abisko …
The acid deposition of sulphur- and nitrogenoxides from combustion of coal and oil cause acidification that lowers pH and gives increased contents of metals and altered aquatic biodiversity in the stream. The liming of lakes and streams, which was introduced to resist the …
… in drainage water showed no growth, probably due to very low levels of nitrogen released from the clay soil. To obtain more growth we added nutrients in increasing doses in the second experiment. The treatments with high nutrient levels showed the highest levels of biomass but …
från kvarterspark till stadsdelspark
… in drainage water showed no growth, probably due to very low levels of nitrogen released from the clay soil. To obtain more growth we added nutrients in increasing doses in the second experiment. The treatments with high nutrient levels showed the highest levels of biomass but …
ett småskaligt försök
… in drainage water showed no growth, probably due to very low levels of nitrogen released from the clay soil. To obtain more growth we added nutrients in increasing doses in the second experiment. The treatments with high nutrient levels showed the highest levels of biomass but …
undersökning av fosforhalter
… modelling of source apportioned gross and net transport of both nitrogen and phosphorus. With the Fyrismodel it is also possible to better/more precisely calculate the natural sources. An effective reduction of the phosphorus leakage from arable land would require measures that …
a metal polluted forest soil in Gusum
… methods, such as field XRF measurements,chemical analysis of metal, carbon and nitrogen content, pH, acid neutralizingcapacity, texture, soil depth, field leach tests, sequential extraction and microbialfunctional profiles. The study showed that copper and zinc …
… reverse osmosis are the best systems for recycling of other nutrients such as nitrogen, potassium and sulfur.
En aktörsanalys
… are of great valuebut they also bring problems. As an example, the loss of nitrogen and phosphorusfrom agriculture and urban society's sewage systems contributes to some of today?smajor problems in water environment. Another problem associated with plantnutrients is that finite …
… from which wateris pumped into storage. It was found that the amount of nitrogen (N) and phosphorus (P) that had been gatheredin the different ponds varied a lot between ponds, due to differences in nutrient levels in the streams and todifferences in when ponds were filled. A …
… from which wateris pumped into storage. It was found that the amount of nitrogen (N) and phosphorus (P) that had been gatheredin the different ponds varied a lot between ponds, due to differences in nutrient levels in the streams and todifferences in when ponds were filled. A …
Kväve är en viktig byggsten i allt levande på jorden, och ingår i bland annat aminosyror,proteiner och DNA. Eftersom kväve återfinns i alla växtens celler har det en avgörande roll ivåra odlingssysystem för att få skördar med bra kvalitet. Kväve utgör också en av de …
evaluation of methods, microbial activity and agronomic implications
… heat treated PS were tested. All additions were based on fertilizer mineral nitrogen content and corresponded to0-140 and 0-1120 kg NH4-N ha-1 in the respiration and PDA experiment, respectively.A respiration peak was observed for the BRs immediately or within three days after …
… increase the sludge’s value as a fertilizer, because of the higher amount of nitrogen incorporated. Previous studies with ammonia sanitization in urine and faeces have shown effective inactivation of pathogens. The treatments consisted of additions of 0.5 - 2 % urea or ammonia …
Benkemiska isotopanalyser på artikulerade och disartikulerade individer i Frälsegårdens gånggrift
The aim in this thesis is to use carbon, nitrogen and sulfur isotope analysis on teeth and bone to track diet and mobility of the population as well as the individual level from the articulated and disarticulated individuals from the passage grave Frälsegården, situated in …
