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.

Background & Problem: The Statutory audit was initiated in the beginning of 1983 with the argument that it had a preventative affect against economic crimes. It is discussed whether the statutory audit should be abolished considering it brings major costs for small limited companies, also there are discussions however easing the regulation for these companies. What effect would it impose for the preventative work against economic crimes if the statutory audit is abolished?Purpose: The purpose with this study is to learn how an abolishment of the statutory audit among so called micro businesses will affect authorities? preventive work against the economic crimes.Demarcate: The study is demarcated to comprise only authorities that work with preventing economic crimes with help of the statutory audit and that will be affected of an possible abolishment, such as the Swedish Tax Office (Skatteverket) and the Swedish National Economic Crimes Bureau (Ekobrottsmynigheten).Methodology: The research is based on a qualitative approach with personal interviews with two representatives from each authority. The gathering of data has been done by researching literature and databases.Conclusions: The result shows that the statutory audit is significant for the authorities and their preventive work.

Uppsatsen handlar om ränta. Varför finns det ränta och vilka faktorer påverkar räntenivån? Uppsatsen är dels doktrinhistorisk men också något nyskapande. Den ?nyskapande? teorin läggs fram i all ödmjukhet, och är snarare att betrakta som en sammanställning av tidigare insikter.

The economic prerequisite to many farmers in Sweden after the EU membership and the new agriculture policy has generated large demands on the farm management. Until year 2004 you got a grant based on what you had produced and not on consumer demand. In 2005 a new economic aid (Mid Term Revue) was introduced and the conditions has changed again. Due to this I have chosen to do a cost-benefit analysis on a case, to investigate if the present production is sustainable in the future. My conclusion is that the profitability is acceptable even if the farm has a high debt. But to make the production more profitable the products produced should be refined as much as possible at the farm, to get maximum economic return.

Emissions of radionuclides to the atmosphere can lead to wet deposition on plants in the event of rainfall. An increased level of radioactivity in the plants may occur due to interception and retention of the radionuclides. If the content of the plants is above the threshold limit value, entire yields may have to be destroyed. In order to prevent contamination or decrease the content countermeasures can be taken. The impact of the biomass, leaf area index (LAI) and growth stage of the plant on the interception and retention is important to know in order to decide which countermeasures to use. Weather may also be an important factor. In this work the interception and retention of 134Cs and 85Sr by spring wheat, ley and spring oil-seed rape was studied.

Emissions of radionuclides to the atmosphere can lead to wet deposition on plants in theevent of rainfall. An increased level of radioactivity in the plants may occur due tointerception and retention of the radionuclides. If the content of the plants is above thethreshold limit value, entire yields may have to be destroyed. In order to preventcontamination or decrease the content countermeasures can be taken. The impact of thebiomass, leaf area index (LAI) and growth stage of the plant on the interception andretention is important to know in order to decide which countermeasures to use.Weather may also be an important factor.In this work the interception and retention of 134Cs and 85Sr by spring wheat, ley andspring oil-seed rape was studied.

Picropodophyllin (PPP) is an analogue of the anti tumour lignan podophyllotoxin with the unique ability to selectively inhibit the receptor of Insulin like growth factor 1(IGF-1). IGF-1 is believed to play an important part in development of the endometrium facing implantation. With PPP treated mice, studies can be made to measure gene expression from tissue of both treated and untreated mice to compare the role of IGF-1 regarding ovulation, implantation and receptivity. The aim of this study was to analyze gene expression of some steroid hormone receptors and cytokines in ovaries from mice treated with PPP. In this study, seven mice were treated with PPP at different times and tissue was collected.

The resting area is the most important place in the barn for the dairy cow, sometimes called the heart of the free stall system. Inadequate design of the lying area, and lack of or poor quality of bedding materials may reduce the hygiene of the stall. Poor management regarding the cleanliness of the resting area may lead to poor animal hygiene and increased bacterial growth. This in turn will lead to increased risk for environmental mastitis as well as impairing milk quality through contamination with spores. In this literature study the most commonly used bedding materials; straw, sawdust, wood shavings, clean sand, recycled sand, peat and recycled manure solids, are compared to one another with regards to their ability to resist bacterial growth. Effects of adding hydrated lime to bedding materials have also been studied. Most bacteria need humidity and prefer a quite high water activity to be able to grow.

Purpose: The main purpose of our study is to explain how the disability management in the municipality of Karlskrona can design its balanced scorecard from a theoretical basis. The mission of the balanced scorecard is to improve the management control system. To achieve the main purpose we have to study the problems that exist with the current control system, which then becomes our second purpose.Method: Our study has a qualitative approach. The design of the study is a case study in which one case has been looked at. The empirical data is collected through interviews and documents. We have gathered our theory through scientific articles and literature.Results: The goals set by the board are unclear and hard to define.

Fältbiologer in Lund : A study on how the NGO Fältbiologerna has affected environmental politics in the municipality of LundThis paper examines, through interview and literary studies, if the environmental NGO Fältbiologerna has had any impact on the environmental politics of the municipality of Lund. The study is based on a case where Fältbiologerna were protesting against the establishment of two shopping centers near the outskirts of Lund.The study is inconclusive, but provides a few interesting questions for further studies in this subject..

Growth models are very useful tools for forestry to predict growth and yield. With growth models and optimising tools you can manage forest stands in a way that maximize benefit and income. There are three major types of growth models. Stand models; stage structured models and single-tree models. The most advanced models give the most accurate forecasts.

The aim of this work is to demonstrate how the net present value (NPV) at the time of the first thinning depends on the spacing after pre-commercial thinning, and show how net value from first thinning in same stand is influenced. This study is performed with models based on non-distant dependent growth models for single trees. Two different growth models have been used, one for cleaning (pre-commercial thinning) and one for thinning. The first one yields stem density distributed over diameter classes. In the second one, (the thinning model), it is possible to choose when thinning should be done, the thinning method, thinning grade and numbers of thinning.

Background: Health economic evaluations are becoming an increasingly important means of analysing which care alternative resource utilisation is the most cost effective. It is a new topic in the medical device industry that causes much uncertainty and unstructured use of the actors involved.Study questions: Why is it difficult to develop, implement and disseminate this standardized health economic evaluation models in medical technology? Is there a possibility to standardize health economic evaluations within the medical device industry?Purpose: The purpose of this study is to investigate the standardization issues for health economic evaluations within the medical device industry.Method: A qualitative approach was used in the form of interviews with five actors that are active or have a connection to the medical device industry. The data collection consists of journals, reports, Internet searches and literature among other things.Conclusion: It is possible to standardize, but with certain restrictions such as the county council's budget, influence of industry-specific factors, lack of knowledge and the important interaction between actors..

Hybrid aspen is a crossbreed between European and North American aspen. It is a fast growing tree species that has shown strong growth in the South of Sweden. The follow-ups that have been made on hybrid aspen stands, have mainly been done on plant material in the South of Sweden. In the North of Sweden, only occasional studies have been made, and the knowledge of Northern hybrid aspen stands is, thus, unsatisfactory.In the South of Norrland, land owners have planted hybrid aspen, but what kind of plants it is, and how well these stands have established, is not ascertained, since data has not been compiled on the subject.The objective of this study is to evaluate practical plantations of hybrid aspen in the South of Norrland regarding height growth, survival and damages. The ambition is to increase the knowledge about practical plantations regarding height growth, survival and damages, and from the conclusions thereof, give recommendations for future establishments of hybrid aspen in the area.For the study, eight hybrid aspen stands in the South of Norrland were localised.

Syfte: Vi ämnar med uppsatsen att undersöka om det råder en skillnad i avkastning mellan portföljer indelade efter kriterier som kännetecknar värde samt tillväxtaktier. Studien genomförs specifikt på svenska marknaden och portföljernas avkastning skall utvärderas utifrån en årlig buy and hold strategi. Vi ämnar även utvärdera om något av urvalskriterierna (Price to book, Price to earnings och Dividend yield) i de polära strategierna är mer framgångsrikt än de andra under perioden 1996 till 2007 ochvilken/vilka faktorer som kan vara avgörande för framgången..