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295 Uppsatser om Nitrogen retention - Sida 10 av 20

Gröna tak som del i ett hållbart stadsbyggande

Green roofs have seen a revival in the society of today. They provide many functions of which both society as a whole and the individual can take part. In particular extensive green roofs, that requires little or even zero maintenance, provides very valuable functions. Green roofs affect our environment and our economy in a positive manner as well as the physical expression of buildings. In this bachelor thesis the impact of green roofs on society has been examined throughout literature studies. The result as a compilation of contemporary research in this field is presented together with a discussion about the use of green roofs in general. The two major arguments for an extended use of green roofs are, the high stormwater retention capacity and the cost-benefits seen over time compared to a conventional roof.

Kundbibehållande och lönsamma kundrelationer genom relationsmarknadsföring: fallstudier på JOB media och Polardörren AB

This thesis focuses on RM and customer relationships and tries to answer two research questions: how firms can retain customers and how to generate profitable customer relationships by using relationship marketing. We conducted case studies on JOB media, a company in Luleå, and Polardörren, a company in Öjebyn, Piteå. Our research has revealed that in many ways our case study companies conform in major ways to the theory in this particular area. However there are differences between how these two firms go about in regard to customer retention and establishing profitable customer relationship. We have discovered that JOB media, which is a service company is more inclined to maintaining close and long-term relationships with its customers.

Effekten på nedbrytningen av rötter vid tillförsel av ammonium sulfat i en granskog i sydvästra Sverige

Decomposition of organic matter is a critical process in the ecosystem, which involves many essential biotic and physical parts. Decomposition is therefore an important process both above and below ground. The rate of decomposition is dependent of many environmental factors for example: pH, moisture and supply of oxygen. The decomposition can therefore be affected by large scaled environmental influences, such as acidification and climatic changes. The root litter in the forest is in different ways affected by acidification, liming and manuering.

Yrkesofficerares drivkrafter : En studie i motivationsfaktorer hos svenska yrkesofficerare

Denna explorativa studie genomfördes med en flerfaldig forskningsstrategi. Empirin bygger på intervjuer och enkäter med totalt 238 officerare varav 228 var yrkesverksamma vid studiens genomförande. Undersökningsfrågorna avhandlade drivkrafter som fick yrkesofficeren att vara kvar i yrket. Resultatet av undersökningen gav att de avgörande drivkrafterna för officersyrket bestod av ett flertal faktorer vilka inordnade under Maslows behovsteori visade sig fylla alla steg i behovshierarkin. Vissa av de avgörande faktorerna uppvisade dock skillnader i viktningsgrad främst beroende av variabler som ålder och vapengrenstillhörighet, men även av variabler som motivationsnivå, utlandserfarenhet samt tidigare civil erfarenhet.

Att gestalta en socialt hållbar begravningsplats

This thesis aims to present the essential background on how to perform climate changeimpact assessments, and to present the results from a climate impact assessment on waterbalance and nitrate leaching for an arable Swedish soil. The soil is a sandy soil in southwesternSweden, grown with spring cereals. This study is meant to be a benchmark example,and cannot be seen as a regional or national assessment for Sweden, rather as an approachto present and analyze the most important parts of these kinds of assessments.A dynamical simulation model (COUP, Jansson and Karlberg, 2004) was used for thisstudy. The model was parameterized and calibrated against data from an experimental site,located in Mellby in Hallands county, south western Sweden. Measurements were carriedout between 1st of April 1988 and 1st of April 1991.

Water balance and nitrate leaching from arable land in a changed climate : a model study

This thesis aims to present the essential background on how to perform climate changeimpact assessments, and to present the results from a climate impact assessment on waterbalance and nitrate leaching for an arable Swedish soil. The soil is a sandy soil in southwesternSweden, grown with spring cereals. This study is meant to be a benchmark example,and cannot be seen as a regional or national assessment for Sweden, rather as an approachto present and analyze the most important parts of these kinds of assessments.A dynamical simulation model (COUP, Jansson and Karlberg, 2004) was used for thisstudy. The model was parameterized and calibrated against data from an experimental site,located in Mellby in Hallands county, south western Sweden. Measurements were carriedout between 1st of April 1988 and 1st of April 1991.

Tillförsel av använda fosforfilter påverkar inte tillväxten eller fosforupptaget hos korn

The eutrophication of inshore seas, lakes and watercourses is mainly due to leaching of nitrogen and phosphorus (P) from agriculture. Many efforts are made to reduce the lea-kage of phosphorus in Sweden and the Baltic Sea countries. Phosphorus is also a finite resource and the mining of good quality raw material gets more and more difficult. Se-dimentation dams in combination with filters is one relatively new method to separate P from run-off and drainage water from agricultural land. This study was a part of an IVL Swedish Environmental Research Institute?s project which tests the capacity and func-tion for separation of phosphorus in four phosphorus filters.

EU och informationsfriheten. En idé- och ideologianalys av informationsfriheten i EU:s datalagringsdirektiv 2006/24/EG.

This master?s thesis is about freedom of information ideas in the European Union data retention directive, 2006/24/EC. The directive means that data about electronic communications services will be retentioned. The aim of the thesis is to examine what ideas related to freedom of information that appear in the directive and how these ideas belong to the ideology of freedom of information that is common within the library community and to the juridical restrictions. In the light of surveillance tendencies that have occurred over the last years, the most well-known is probably the USA Patriot Act, it is interesting to study how freedom of information ideas appears when surveillance is legislated.

EN MILJ?STUDIE OM DE GEOKEMISKA F?RH?LLANDENA I SK?RHAMN, SVENSKA V?STKUSTEN

The following study aims to investigate the environmental conditions of the harbor of Sk?rhamn, a small fishing community on the west coast of Sweden. The interest to do so rose as a newly built apartment residence failed to connect the sewage pipes of 18 apartments, causing the untreated sewage running into the sea. The parameters accounted for are the C/N ratio, total organic carbon (TOC) as well as total nitrogen present (TN) and ?13C in the top ten centimeters of a sediment core retrieved in the Sk?rhamn harbour.

Modellering av kväveavskiljningen under fyra år i en anlagd våtmark på Lilla Böslid, Halland

Populärvetenskaplig sammanfattning: Kvävebelastningen på sjöar och hav har ökat markant de senaste tiotal åren. Jordbruket stårför ca 50 % av de svenska kväveutsläppen som människan bidrar till. En ökadkvävebelastning på haven kan leda till övergödning, vilket får en stor negativ effekt påvattenekosystemen. Ett sätt att minska övergödningsproblematiken är att öka vattnetsuppehållstid i landskapet genom att anlägga nya eller restaurera gamla våtmarker ijordbruksintensiva områden som t ex. Halland och Skåne.

Something fishy in Christians : Dietrekonstruktioner genom analys av stabila isotoper på tidigmedeltida skelett från Rambodal, Styrstad Sn, Östergötland

Dietary patterns has varied throughout history, both due to resource and cultural limitations. In this thesis, a study was conducted to establish the dietary patterns of eight individuals from an early Midieaval gravesite in Rambodal, Östergötland, in order to explain why they were buried there. This was done through stable isotope analysis on collagen extracted from bone and tooth on the buried individuals. The analysis showed that these indviduals had a diet that was mainly based on freshwater fish. This suggests that these people may have been christians, due to the fact that fish was not regarded as meat and therefore you did not have to abstain from it during periods of fasting.

Testeffekten i skolan : Mindre fokus men bättre hågkomst

Instudering med självtestning leder till bättre retention, jämfört med återupprepad läsning (testeffekten). Studiens syfte var att (i) replikera testeffekten i en ekologiskt valid miljö (ii) jämföra tyst outtryckt självtestning mot uttryckt vid instudering med en veckas retentionsintervall (iii) undersöka om fokus och engagemang påverkar retentionen av det inlärda materialet. Sjuttiotre elever fick studera en text och sedan göra ett sluttest efter 1-2 minuter och igen efter en vecka. En grupp fick enbart återupprepat läsa materialet i fem faser, en annan läste och fick därefter testa sig skriftligt medan en tredje läste och testade sig tyst för sitt inre. En signifikant skillnad erhölls mellan testning vid instudering mot återupprepad läsning vid de båda sluttesten.

Nutritionens betydelse för akut traumatiskt hjärnskadade patienter

The aim of the literature review was to illuminate the importance of nutritional management to patients who have sustained a traumatic brain injury (TBI) and describe nurses responsibility and meaningful function in the nutritional support. TBI patients tend to be associated with hypermetabolism and hypercatabolism, resulting in negative nitrogen balances. The results reveal increased energy expenditure and assessments of needs energy requirements at the TBI patients. This study determining the route of feeding: enteral versus parenteral nutrition. Furthermore describes complications associated with enteral feeding.

Biogasanvändning vid Käppalaförbundets Reningsverk: ? en värdering av miljöeffekter

This thesis calculates and compares the values of improved environmental quality due to future possible investment alternatives in biogas production facilities at Käppalaförbundets Reningsverk (Käppala Sewage Treatment Works) in an attempt to determine which alternative yields the highest such value. Käppala faces three investment alternatives for the usage of biogas. The alternatives are production of vehicle fuel, district heating and thirdly, heat and power production. Estimates of the value of environmental change are calculated for each of the three investment alternatives, and these estimates are then compared. The environmental change in question is the change in discharge levels of carbon dioxide (CO2), nitrogen oxides (NOx), sulphur dioxide (SO2) and particle matter.

Delad lojalitet: inom detaljhandeln

Syftet med vår uppsats är att utvärdera hur enskilda butiksägare, som ingår i en större kedja, ser på fördelar samt nackdelar att ingå i en större koncern. Syftet är också att utröna hur butiksägarna definierar en lojal kund samt hur de arbetar för att strategiskt skapa kundlojalitet. Vår studie grundar sig på intervjuer med två enskilda butiksägare som ingår i samma koncern. I studien framgick det att butiksägarna genom användandet av kundkort erhåller kundlojalitet som ett bra verktyg för att kunna förbättra och stärka den totala ekonomin i företaget. Det krävs dock att man inser betydelsen av att engagera sig för att skapa en bättre balans mellan kundernas attityd och kundernas beteende.

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