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295 Uppsatser om Nitrogen retention - Sida 9 av 20

Vegetationslösningar och andra metoder mot stranderosion :

Today 70 percent of the world's sand beaches are under recession due to erosion. The global warming may have the effect upon the sea level increasing and the erosion increasing on the sand beaches. To save these sand beaches, the erosion must be prevented. Coast erosion shelters like gabions and sea walls are functioning extremely well to protect the land behind the sand beach, but due to the wave reflections, created in front of these so called hard erosion shelters, the erosion of the front beach is accelerated. During the last decades, artificial sand supply (beach nourishment) has been the adopted praxis.

Källsorterade systems påverkan på avloppsreningsverk : växthusgaser, energi- och resursanvändning i modellstudie

The aim of this study was to evaluate the effects on a simulated wastewater plant regarding GHG emissions and use of energy and resources when implementing source separated wastewater systems. The effects were studied for different restrictions of effluent quality and for different temperatures on the influent. The simulation model BSM2G calibrated for Käppala wastewater treatment plant was used. The task was executed by simulating nine different scenarios with an increase in influent load from new connections equivalent to 3, 10 and 30 % of the present connections. These new connections were served by conventional, urine separated or black water separated systems.

Ägarnas motiv till börsnotering - värderelevant för investerarkåren?

This paper investigates the relation between stock performance and owner share retention in Swedish public equity listings during 2009 to 2013. The listings during the period are studied and divided into binary groups of "exits" and "non-exits", which are used in a statistical regression model to determine if there is a significant difference in average stock performance. The study finds that stocks of exit-companies on average significantly underperformed stocks of non-exit-companies during 2009 to 2013. Nevertheless, due to the limited number of observations available and the unusual market conditions, caution is required in interpreting these results..

Massbalansmodellering av fosfor i ett åländskt kustområde : en utredning om lokaliseringen av Lotsbroverkets utloppsledning

This report is commissioned by the Water and Sewage Agency in The City of Mariehamn, Åland. The basic aim is to investigate positive or negative effects of a relocation of the sewage pipe from a wastewater treatment plant, Lotsbroverket. The environmental licence of Lotsbroverket is to be revised and The Environmental Appeal Board at Åland?s Government and Administrative Board has made demands that several possible locations in an outer water area should be examined. The present location of the sewage pipe is in Svibyviken, which has been classified as an ?inner water area?.The objective of this work is to study to which extent the nutrient loading from Lotsbroverket influence the environmental conditions in Svibyviken, and to investigate the suitability of different locations of the wastewater pipe from Lotsbroverket.The way a coastal area looks, i.e., its morphometry, determines to a large extent its ecological characteristics.

Skolans värdegrund : En studie om elevernas uppfattningar av grundskolans värdegrundsarbete

The purpose of this thesis is to investigate how students relates to and perceives the schoolswork with the value base. To answer my purpose has been two studies conducted. The first study aimed at finding out students' perceptions regarding the content and concretization of the value base and on their perceptions of participation and retention of this work. This study was conducted using a questionnaire survey.The second study has aimed to highlight the approach embodied by the schools' plans and treatment plans. This sudy has been conducted trough a review of policy documents available on the websites of education departments, municipalities and schools.

Vattenkvalitén i Fredstorpsbäcken - dikad bäck på fastigheten Rämningstorp i Skara kommun :

The estate of Rämningstorp in the region of Västergötland in southern Sweden is administered by the holding trust company Skogssällskapet i Skövde. In 1999 measures were taken by Skogssällskapet to drain the stream Fredstorpsbäcken as a means to increase the forest productivity of the surrounding lands, which are situated on the estate of Rämningstorp. Almost immediately after the drainage, the streamwater turned turbid and a landowner downstream reported the issue to the county administrative board of the region. The aim of this thesis was firstly to analyse the suspended matter that appeared during summer/autumn and secondly to explain why it came to be. Initial hypotheses for the explanation to the greyish turbid water were that it was either 1) a chemical/biochemical precipitate, or 2) an bacterial/algal blooming.

Emotionella upplevelser och emotionsreglering i samband med en nedskärningsprocess

The aim of this study was to investigate emotions and emotion regulation of a downsizing in an industrial company. The sample consisted of persons who had experienced a downsizing but have kept the employment, within a same position or being transferred to another one. Data consisted of two focus group interviews, analysed by an inductive thematic analysis. The results have indicated that emotional reactions changed over time as well the emotional regulation did during the different phases. The groups differed in emotional reaction related to the time of decision regarding the retention of employment.

Vattendraget på Kåbo golfbana : en kartläggning som ett steg i golfklubbens miljöarbete

This degree project studied surface waters on Kåbo Golf Course in Uppsala, Sweden, with the aim of determining the status of the water and how it is affected by the activities of the golf club, and to obtain suggestions of measures to create better conditions for the water environment on and around the golf course. The project forms part of the environmental protection work of Kåbo Golf Club, which is working towards achieving environmental certification from the Swedish Golf Association (SGF). The study is based on literature studies and quantitative and qualitative field studies of water on the golf course, with the focus on environmental factors identified as being important for the golf industry and on strategic environmental goals developed by SGF. The number of open water bodies in the Swedish landscape has substantially declined during the past 200 years, so it is important to save those that remain. This study showed that the surface water at Kåbo Golf Course is an important element in the surroundings since the area contains few wetlands, which can be a habitat for large numbers of species. The stream and ponds on Kåbo Golf Course also have the important function of serving as water hazards in the game and adding difficulty and variety to the course. Since Kåbo Golf Club wants its surface waters to look aesthetically appealing, extensive algal growth and drying up of ponds during parts of the year are regarded as problems.

Friskvårdsprogram : Ett medarbetarperspektiv på hälsa, motivation och lärande

Due to an increasing amount of people being put on a sick-list the issue of work health has come to receive a lot more attention. To confront the problem, different varieties of keep-fit measures have been launched in the workplace. A prime example of such a measure can be found at Centralsjukhuset Kristianstad, which this survey is investigating. The primary goal of this study is to investigate the use of the Keep-fit measures program and to identify what motivates the employees to utilize this program. Further we would like to investigate if the program, through motivation and learning, generates improvement and retention of the individuals? health.

Fröodling av Raj- och rörsvingel i Sverige

Festulolium (Festulolium) and tall fescue (Festuca arundinacea) has not been grown inSweden over a longer period. So far there is no greater area cultivated, but the area isincreasing. Festulolium and tall fescue are expected to eventually replace meadowfescue in many leyseed mixtures to dairy cows in southern and central Sweden. Tallfescue has in recent years become popular again. Festulolium is a hybrid betweenryegrass and fescue.

Askgödsling och dess lämplighet i torvmarksskogar tillhörande Sveaskog Förvaltnings AB : en litteraturstudie

During whole-tree harvesting, there is a risk that the soil will become impoverished of nutrients. To prevent this, nutrients are returned to the harvested site as wood ash. This action also reduces the risk of soil acidification. Nevertheless, the ash does not result in any increase of tree growth if it is added on mineral soils, which is where the measure is most commonly used in Sweden. Due to the lack of growth response, the interest from landowners is small, which is why ash amendment today is not done enough to compensate for the need.

Kunskapsöverföring och kunskapsbevaring i offentliga organisationer

Denna studie syftar till att belysa hur offentliga organisationer arbetar kring kunskapsbevaring och kunskapsöverföring. Vi har undersökt hur fem offentliga organisationer med olika organisationsstrukturer arbetar med att bevara kunskap inom organisationen, samt hur de överför kunskap mellan medarbetare och till nyanställda. Studien har samlat in det empiriska resultatet med semistrukturerade intervjuer. I analysen diskuteras det empiriska resultatet med ämnen som epistemologiska perspektiv inom knowledge management, maktperspektiv, politiska direktiv, arbetsmiljö samt kommunikationens roll. Resultatet av analysen påvisar bland annat att muntlig kommunikation är en viktig framgångsfaktor i en kunskapsprocess..

Strötorvsanvändning i djurstallar : en litteraturgenomgång

Peat litter has been used in animal houses for a long time. Because of its good ability to absorb liquid and nutrients from the manure it can create a dry surface for animals and a valuable manure product. Through changes in agricultural practises the use of peat litter has diminished and is to a great extent replaced by straw, sawdust and cutter shavings although Sweden is rich in peat-findings. The aim of this work was to summarize the presented knowledge about the used of peat litter, techniques, advantages and disadvantages and to compare with other commonly used litter materials. Articles on peat litter have been searched for in magazines, databases and books at SLU library. Visits to peat industries, interviews with peat producers and with peat researchers contributed to the material. Peat is not a uniformly material.

Kväveläckage inom Tolångaåns dräneringsområde : modellering och åtgärdssimulering

Under de senaste 300 åren har jordbrukslandskapet i Sverige genomgått stora förändringar. I början av 1900-talet introducerades konstgödslet och efter andra världskriget ökade gödslingen dramatiskt i syfte att maximera produktionen. Detta har lett till att överskottet av kväve har spolats ut i vattendragen. I detta arbete har stor vikt lagts vid att skapa en egen kvävemodell i syfte att simulera kväveläckaget från jordbruksmarken i Tolångaåns dräneringsområde..

Impact of Eucalyptus plantations on pasture land on soil properties and carbon sequestration in Brazil

Soil organic carbon (SOC) stocks and fluxes in forest ecosystems are influenced by natural and human disturbances. In the tropical regions the highest impacts on disturbance in forest C cycles are related to human activities such as conversion of natural lands to cropland and pasture areas and to forest plantations. The disturbances in the forest C cycles will release CO2 emissions to the atmosphere triggering global warming. In this study the focus was set in subtropical soils in Brazil, south extreme region of Bahia. The aim of the study was to investigate whether reforestation of Eucalyptus plantations under former pasture areas will help mitigate climate change through carbon sequestration.

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