355 uppsatser · sida 22 av 24
planning for sustainable solid waste management in Stone Town - Zanzibar
… going for ?nal disposal. Since the waste of Zanzibar Town consists of 85% organic material, composting is a suitable method of processing waste. In order to process waste close to source, and thereby reduce the transportation costs, the collection point was given a more …
en litteratursammanställning om såtid, radavstånd och utsädesmängd
… compensate for a likely yield level reduction caused by the wider spacing. In organic cultivation wider row spacing is an opportunity for developed mechanical weed control, where a lower weed amount can increase the yield. Seed rate should be adapted to the growing location …
hur ser kunskapsläget ut hos några olika grupper människor?
… 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 adapted with mycorrhizae and are now …
… chemical properties (the plastic polymer itself and additives) and persistent organic pollutants (POPs) gathered on their surface. The latter because micro plastics have a large hydrophobic surface, which accumulate POPs to a great extent, leading to up to 105-106 times more …
a comparison between agroforestry systems and non agroforestry systems
… yield of cooking bananas in the agroforestry systems. The farms which used organic manure (i.e. the agroforestry farms) also had significantly higher yields of cooking bananas. Agroforestry gave a more diverse cropping system than the non-agroforestry system, which resulted in a …
a comparison between glaucous gulls and black guillemots from Svalbard
Perfluoroalkyl substances (PFASs) are ubiquitous in the environment today and they have been detected even in remote areas such as the Arctic. PFASs can be transported by the atmosphere and ocean currents but the transport mechanism is not fully understood. PFASs may be harmful …
… was established in 1987 and includes 5 cropping systems (2 conventional and 3 organic) with six year crop rotations. In March 2012, soil samples were taken in the Önnestad field trial and high numbers of plant-parasitic nematodes were observed. One year later, soil samples were …
… There is a great demand for vegetable-based proteins, especially in the organic production where synthetic amino acids are banned. However, the current production of soy beans is not environmentally sound and that combined with the long transport distances amplifies the need of …
Sammansättningen och kvalitén på mjölken som produceras är betalningsgrundande och därmed är det viktigt ur en ekonomisk synvinkel att producera mjölk som håller en hög standard. Syftet med denna litteraturstudie var att undersöka om samband finns mellan typ av digivning …
… to the foetus. The bioavailability of Se depends of the origin and inorganic Se in the form of sodium selenite and sodium selenate has lower bioavailability than organic Se in the form of selenium yeast. It is generally known that Swedish soils have low Se contents and for …
soil carbon and yield modelling for crop rotations with rye
… term biogas digestate refers (in this case) to the slurry that remains after organic material, primarily food waste or animal manure, has been used for biogas production. For rotations with ley, a case where ley was used for biogas production and the resulting digestate was …
Lipidanalyser med GC-MS på cypriotisk järnålderskeramik från kultplatsen Ayia Irini
… one sample, which was too heavily contaminated to glean any clear traces of organic residue from the time of deposit.
… Here the long-term impact of clear-cut on lake water quality (dissolved organic carbon (DOC), nitrogen, phosphorus and pH) has been investigated, based on 23 lakes sampled during autumn. Data for additional 15 lakes sampled for the Swedish monitoring program were also used …
Membrane bioreactors- A future solution at Lundåkra wastewater treatment plant?
… in the MBR-solution was decreased or unchanged for nitrogen-, phosphorous- and organic parameters. However, the energy demand will increase with an estimated cost of approximately 1 million SEK annually. Moreover, the extra chemical consumption is estimated to cost 370 000 SEK …
En fallstudie av Himmerfja?rdsverket
… industries. It also holds high concentrations of chemically bound energy as organic compounds and nutrients. The flow of chemically bound energy at Himmerfja?rdsverket corresponds to a power of 15 MW. During the treatment processes sludge is separated from the wastewater. The …
