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3431 Uppsatser om Biogas potential - Sida 24 av 229
Stockholm temporary : relevancy & potentials for implementing temporary architecture in Stockholm
Temporary architecture is an alternative urban planning concept which has been adapted in many cities worldwide during the last decade. There is however no common definition for temporary architecture and it is diversely labelled and applied. In 2013 it also became publicly introduced in Stockholm via the approval of the city's first architectural guideline.
Temporary architecture is presented in the guideline as a potential tool for exploring public spaces among other architecture related themes. The ideas for temporary architecture are ambitious and promising. The problem is that they are vague and leaves questions regarding
performance unanswered.
Ätbara insekter, nutid eller framtid?
Att äta insekter benämns som entomophagy. Cirka två miljoner människor på jorden beräknas äta insekter i dagsläget. Det är dock inte vanligt förekommande i västvärlden där entomophagy ofta möts med avsky. Eftersom insekter är resurssnåla och näringsrika kan livsmedlet dock vara av betydelse för att mätta världens växande befolkning utan att samtidigt tära på miljön. Därmed bör ätbara insekter även vara av intresse i Sverige.
Koldioxidlagring - realitet eller utopi? : En komparativ fallstudie med syfte att undersöka potentialen för koldioxidlagring i geologiska formationer och biologiska sänkor och dess förmåga att bidra till hållbar utveckling
To curb greenhouse gases and mitigate climate change is one of the biggest challenges human society face today. Carbon dioxide (CO2) has accumulated rapidly in the atmosphere as a consequence of burning of fossil fuels and deforestation. The aim of this study is to explore two methods to store carbon dioxide in geological formations and biological sinks. The aim is also to discuss the two mitigation options from a sustainable perspective and whether it can lead to a better environment and benefits for local and global societies. The research questions are: Which method to store carbon dioxide, geological or biological, is the most effective? Which method to store carbon dioxide, geological or biological, has the greatest potential to promote sustainable development for local communities?The method used is a comparative case study and presents four case studies that explore the potential for CO2 storage offshore in Norway and Brazil; and in tropical forests in Mexico and Brazil.
(Hur) har distans- och hybridarbetet p?verkat f?retagskulturen? En kvalitativ fallstudie om distans- och hybridarbetets p?verkan p? f?retagskulturen inom 5 organisationer
In recent decades, the concept of corporate culture has emerged as an increasingly important factor in the business world, as evidenced by a rise in research and efforts to direct it in various ways. The pandemic has led to significant changes in work processes and office environments as operations shifted to remote work. The purpose of this report is to investigate the impact of remote work on corporate culture and its potential advantages and disadvantages. Additionally, the report aims to analyze how corporate culture currently looks, considering the potential presence and adaptation to hybrid work. Based on a multi-case
study, it includes interviews with ten individuals from five different organizations.
Förslag till kväverening i Forsåsystemet genom våtmarksetablering
The last hundred years humans have drastically changed the amount of available nitrogen in nature. Today human activities release twice as much available nitrogen as all natural processes are doing together. We also have degraded nature´s possibilities to take care of nitrogen through the draining of wetlands and straightening of rivers. In order to regain the potential of nitrogen retention in the water systems there now requires a reshape of the landscape we live in. A planned expansion of the mining activities in Garpenberg, Dalarna, would double the content of nitrogen in the waters below the mine.
Storjuktan ? Rekonstruktion av ett sekels kvicksilverbelastning. : En undersökning av kvicksilverkoncentrationer i daterat bottensediment.
The aim of this study was to examine the current and historic mercury(Hg) load of the lake Storjuktan due to its recent exposure to a local potential source of Hg in form of the Sulphide mine Blaikengruvan(2006) and an earlier potential sources of Hg-load, the damming of the lake(1960s). Sediments were extracted using a HTH-sampler, freeze-dried, and analyzed for tot-Hg, LOI and activity of 210Pb and compared to samples extracted prior to the opening of the mine(2006). Constant initial concentration (CIC)-dating model was used for dating the samples. Low levels of Hg (100ng/g) were found throughout the lakes sediment. The highest levels of Hg(220ng/g) was detected at a depth of 4-5cm dating back to the mid 1970:s, suggesting that increased levels of atmospheric Hg rather than damming of the lake has caused the increase of Hg.
Aktivitetsbaserade kontor : En studie kring hur Vasakronan implementerat det aktivitetsbaserade kontoret och arbetssättet
Partnering is a collaboration method where the contractor and the client work together, based on a mutual trust towards each other and with a common goal for the project. The method originates from the United States where it was early adapted by the U.S. Army Corps of Engineers. It later spread internationally where the United Kingdom and Denmark were early in Europe to see the potential with partnering, to help aid with the issues they were having where construction projects kept running late, going over budget and lacked in quality. By using partnering you can achieve a shorter building time, improved work relationships and enhanced efficiency and cost effectiveness.
"Oprah" i den senmoderna offentliga sfären. En textanalys av "The Oprah Winfrey Show" och dess funktion i samhället
The intention of this thesis is to examine "The Oprah Winfrey Show" and its position and functions in the public sphere. Particularly interesting aspects are like the linking of private and public issues, the show's potential as a forum for debate and dissemination of knowledge, and what types of criticism the show has been subjected to. The methods used dealt with the textual aspects of the show. Semiotic analysis and conversation analysis were applied to five episodes and a search of literature was made. The thesis rests on theories concerning television studies and talk shows, in addition to theories on modernity and identity.
Demokrati och den retoriska kunskapens potential : Ett retoriskt perspektiv på deliberation
This study investigates the potential of a rhetorical theory of knowledge to expand beyond its own domain and into political theory, specifically theories of deliberative democracy. Despite the increasing interest in communication in democratic theory in the last decades, the majority of theorists have not turned their interest towards rhetorical science. On the contrary, theorists often regard rhetoric as dangerous and incompatible with the deliberative ideal of reason. The aim of this study is therefore to defend rhetorical science by investigating how the rhetorical theory of knowledge ? as it is presented by Chaïm Perelman and Oldbrecht Tyteca, and further developed by Mats Rosengren and Maria Wolrath Söderberg ? can contribute to the understanding of deliberative democracy.
Ränteavdragsbegränsningsreglerna : Är den svenska skattebasen skyddad?
This thesis treats the extended Swedish rules regarding deduction limitations on interest. The purpose for this thesis is to investigate whether the interest deduction limitation rules have potential to protect the Swedish tax base. The thesis also assesses whether the options presented how the extended rules could look liked had been better to protect the Swedish tax base. Furthermore thin capitalizations rules have been evaluated if this is a better method to protect the Swedish tax base.In 2009 the Swedish deduction limitations rules on interest came in to force to protect the Swedish tax base. Despite these rules companies was still able to avoid Swedish tax and therefore threatened the Swedish tax base.
Exosomes as a potential mechanism of intercellular spread of prion protein
Structural rationalizations and regionalization of the agricultural sector in Sweden has lead to unevenness in thedistribution of plant nutrients. Nutrients are lost from crop producing farms as harvest products are sold, whilefarms with animal production often have manure in excess of their needs. In addition to this the retention ofwater and nutrients in naturally occurring wetlands has decreased due to a reduction of wetlands in number andsize in the agricultural landscape. This increases nutrient levels in agricultural run-off and causes eutrophicationas well as nutrient losses from arable soils. One potential solution to both problems would be to store nutrientrichsurface water from agricultural areas and use it for irrigation of agricultural crops.
Webbaserad hälsokommunikation ? och dess potential som informationskanal för primärprevention
Syftet med studien var att belysa Internet-webbsidans potential som kanal för hälsokommunikation kring primärprevention, med utgångspunkt från en webbaserad vaccinationskampanj mot livmoderhalscancer. Studien är empirisk med en kvalitativ ansats. Enkäter och semistrukturerade gruppintervjuer med halvöppna frågor har använts för att samla in data. Fjorton unga kvinnor i åldern 18-19 år på två gymnasieskolor i Stockholm deltog i studien. För att analysera data har innehållsanalys med manifest ansats används.
Giardia duodenalis - zoonotisk potential med hunden som smittkälla
Giardia är en protozo, ett encelligt urdjur. Parasiten har en direkt livscykel med fekal-oral spridning. Få cystor krävs för att ge upphov till sjukdom och cystorna är mycket resistenta i miljön. Giardia delas in i 6 arter varav Giardia duodenalis (syn. G.
Biologiska behandlingsmetoder för rening av rejektvatten från biogasproduktion
In this literature review the characteristics of two free-floating macrophytes, water hyacinth (Eichhornia crassipes) and duckweed (Lemna sp.), and two microalgae, Chlorella and Scenedesmus, have been examined regarding their suitability as efficient nutrient removers in the treatment of wastewater with high levels of nutrients and suspended solids from a biogas plant in Loudden. The needs required for the plants to be able to grow in wastewater and the amounts of biomass they can produce have also been studied. The results show that Chlorella is capable of a very high uptake of nutrients in photobioreactors with high nutrient loadings. With an ammonia uptake maximum value at 10900mg/m2/d Chlorella outshines the other organisms in this study. The test organism that performed the closest to Chlorella in terms of nitrogen uptake was water hyacinth with an uptake about 1602mg/m2/d.
Skötsel av torvmarksskogar - vad vet egentligen Västerbottens skogsbolag?
About a quarter of the Swedish land area is covered with shallow or thick peat. There is a potential to increase forest production in Sweden with almost 2 million m3/year in selected peatlands with low conservation values. This increase can be accomplished by drainage, complementary drainage, ditch maintenance operations and fertilization. The purpose of this study was to determine the level of knowledge regarding the management of forests on peatlands and was restricted to selected forest companies in Västerbotten County, with offices in Umeå. Three companies were chosen, SCA, Holmen and Norra Skogsägarna.