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1842 Uppsatser om Concentration difficulties - Sida 24 av 123

ALK?RR - K?LLA ELLER S?NKA F?R V?XTHUSGASERNA METAN OCH LUSTGAS? Empirisk studie av v?xthusgasutbyte i kustn?ra alk?rr p? den svenska V?stkusten.

Due to global climate change and the rising levels of greenhouse gases (GHG) in the atmosphere, the interest for seeking solutions for mitigation has increased. While much attention has been directed towards technical solutions such as carbon capture and storage (CCS), biogenic carbon sinks has also garnered significant attention. Previous studies have shown that coastal ecosystems such as seagrass meadows and mangroves have a much greater capacity for storing carbon (C) compared to terrestrial ecosystems. That raises the question if other coastal ecosystems, such as coastal wetland forests, that previously haven?t been considered as blue carbon habitats also contribute to coastal carbon sink capacity.

Investeringskalkyl för en ny såglinje : en rapport om investeringskalkylering

This report presents an investment calculation based on an assumed initial investment of a new saw line to an existing sawmill. In order to get as close to reality as possible, we have received data material from northern forest owners who recently made an initial investment in their sawmill in Kåge. In order to calculate and evaluate investments are several different methods, but we, we have chosen to use the discounted cash flow method. The method sums up with the help of a fixed cost of capital together with any future costs and revenues, thereby giving a present value of the investment. We also do a sensitivity analysis to examine how selected factors affect the investment research they change. The study is carried out to a fictitious investment, and therefore the result should not only be studied as a result of the figures. The purpose of this study was that with the help of an investment calculation studying the profitability of a hypothetical investment, and by means of a sensitivity analysis to study the sensitivity of investment to changes. The result demonstrates that the calculations according to the present value method requires a lot of information of the prospective investment.

Att verbalisera matematiken : en studie om matematik och språk i förskoleklass

Background: Mathematics is a subject that many students perceive as difficult. In recent years, results in mathematics declined, while many students have difficulties in the subject of Swedish. However, there is not much research on the relationship between difficulties in mathematics and language weaknesses.Purpose: The purpose of this work is to find out what role the advocate competence of learning opportunities for the students to understand mathematics. A further aim of this work is to find out how mathematics is verbalized and individualized in preschool and find out how teachers in those classes describes how they work to verbalize and individualize mathematics.Method: The purpose is answered by observations in preschool and interviews of the teachers working in the observed classes. The empirical data are discussed and analyzed with theories related to children's learning and literature of mathematics and language.Result: The results show that mathematics is extensively verbalized in preschool classes.

Kryptosporidieinfektion hos nötkreatur : utvärdering av en ny metod för påvisande av subklinisk infektion

Cryptosporidium parvum is a protozoan parasite causing diarrhoea in many different animal species including cattle and man. It is an important enteric pathogen in neonatal calves and it is the second most common pathogen found in diarrhoeic calves in Sweden. Subclinically infected adult cattle have, in international studies, been shown to shed a low number of oocysts in faeces and this has been recognised as a potential source of infection for new-born calves. The detection methods used for diagnostic purposes are based on microscopic investigation of faecal smears. These methods have a fairly low sensitivity and samples from subclinically infected cattle have to be concentrated before analysis.

Tal- och språksvårigheter/språkstörningar i ett genusperspektiv Speech and Language Difficulties/Language Disorders from a gender perspective

Syftet med denna studie är att göra en jämförelse mellan pojkarnas och flickornas tal- och språksvårigheter/språkstörningar i elva förskoleklasser..

Konstruktion av patientsimulator för anestesimaskiner

A patient simulator for testing anaesthesia machines has been developed at Maquet Critical Care AB, to reduce costly and time-consuming experiments on animals. The device simulates human lungs regarding lung dynamics and volume, uptake of anaesthetic agents and the production of carbon dioxide, heat and moisture. Further demands on the simulator are durability and size; the device shall be compact enough to be moveable.The resulting simulator fulfils the requirements and enables better repeatability and ability to test extreme cases than experiments on animals do.Uptake of the anaesthetic agent is achieved in a active carbon filter and controlled by regulating the flow. The flow is created by a regenerative blower and controlled using a proportional valve. The uptake can be set by the user or by a simple uptake model modified to recursively handle changes in the concentration of anaesthetic agent.Carbon dioxide is fed into the system from a tank by a mass flow regulator.

Rötning av matavfall ? en studie av metanutbytet hos matavfall förbehandlat med skruvkrossteknik samt vid samrötning med bioslam från pappersbruk

Today's society is facing major challenges. In order to reduce the climate impact fossil fuels should be replaced with fuels that do not contribute to the greenhouse effect. The growing population generates organic waste originating from industry and households so called organic fraction of municipal solid waste (OFMSW). Through anaerobic digestion, waste can be utilized to produce energy-rich methane gas. In this way, waste can be a resource instead of a burden on society.

Livskvalitet hos vuxna patienter med astma :  

Background: Quality of life is a concept of individual meaning which is perceived differently depending on the person experiencing it. To have a chronic disease in the lung, such as asthma, has an effect on the quality of life. Asthma affects people of all ages. It is a disease that causes a constriction in the patients? airways which leads to a feeling of suffocation which in turn produces a feeling of anxiety.Aim: The purpose is to illuminate which factors affect the quality of life in adult patients with asthma.Method: This is a literary review based on ten articles, both quantitative and qualitative, from four different continents.

Vuxna dyslektikers informationsbeteende en undersökning av hur sex personer med dyslexi hanterar informationsproblem

The aim of this Masters thesis is to describe the information behaviour of six adults with dyslexia with focus on how they handle information problems. The data consists of literature and interviews with six persons with dyslexia. The theoretical framework used in this study is Anders Hektors theory about human information behaviour as well as concepts and theories from the library and information science field. Ten information activities are used to describe the informants information behaviour. Answers are sought to the following questions: · How do the informants describe their backgrounds and their reading- and writing disabilities? · What problems do the informants meet in the context of information in their everyday lives with reference to ten particular information activities? · How do the informants solve these problems? The study showed that the main problems for the informants appeared to be difficulties with reading and spelling, problems with the appearance of the information, lack of time and stress while reading and writing as well as problems with lack of awareness about dyslexia.

Avskiljning av ammoniumkväve och fosfatfosfor i reaktiva filtermaterial : skak- och kolonnförsök

In Sweden more than 400 000 private households have not yet sufficient wastewater purification. These effluent is considered as an increasing problem and many onsite purification methods have been studied. In this investigation, the method of reactive bed filters have been tested by column and batch experiments. Five different kinds of filter materials with reactive surfaces have been studied concerning their capacity to absorb ammonium and phosphorus from wastewater. The materials that were examined are Filtra N, wollastonite Filtra P, blast furnace slag and Polonite®.

Backsourcing : om dess orsaker, syften och alternativ

This paper examines the reasons behind firms considering backsourcing. While firms experience problems with their outsourcing activities, backsourcing emerges as an alternative solution. Firms primarily take cost considerations into account when reconsidering their outsourcing practices, but this only scratches the surface. A deeper analysis is needed, since cost increases arise from issues such as quality defects and cooperation problems. Even though production costs are low, outsourcing always implies transaction costs.

?Att inte vara ensam?: Tonårsflickors vägledning i fyra moderna ungdomsromaner ? en textanalys.

The aim of this Master?s thesis is to examine if the realistic youth novels of today can provide support and inspiration for its readers with the purpose of dealing with own difficulties. I have examined four Swedish novels from 2006 and studied in what way and from whom the young fictive women get advice and support. In the background section of the essay I have made studies of how it is to be a young woman in modern society. It also covers a historical perspective of the modern youth novel and presents studies based upon reading and reader-response theory of young people.

Handelsutvecklingen efter Lettlands självständighet : En studie om ekonomisk transition under perioden åren 1993 fram till 2004

The main purpose of this essay is to investigate if Latvia´s pattern of trade has become more similar to the mature market economies, after Latvia´s independence 1991.Today, the intra-industry trade (IIT) dominates the trade of mature market economies. One of the pioneers of intra-industrial trade is Paul Krugman, who was the first to emphasize the importance "of scale and consumers' desire for variety" in explaining the basis for modern commerce. Customers get more variety and usually cheaper goods when the market gets bigger. I mainly use the modern trade theories to explain the trade pattern in Latvia. To measure how Latvia has developed its intra-industry trade, and thereby is approaching the mature market economies´ trade pattern, I use the Grubel-Lloyd index (GL-index).

Agentkostnader, ägande och utdelningar : en studie om sambandet mellan ägandet och utdelningar i Sverige

Background: Theoretical, it?s been questioned why dividends exists in companies based upon the fact that there is a separation between ownership and control. According to the agency theoretical perception, dividends is used as a manner to unify the interest of this separation, which in turn lower the agency cost, and increase the efficiency of companies.Purpose: The aim of this master thesis is to scrutinize and analyse the association between Swedish firms? owner structure and owner types and their inclination to dividend.Method: We attack the problem with a hypothetical-deductive research method by using the existence of a universal theory, the agency theory. From our theoretical framework we propose a set of hypotheses.

Sjuksköterskans roll och upplevelser vid förberedelser av barn inför perifer venkateter sättning och blodprovstagning : En intervjustudie

The purpose of the study was to describe the nurse´s role and experiences aroundpreparation of children in front of peripheral venous catheter (PVC) placement andblood draw. The study used a descriptive design with qualitative approach and wasperformed on a pediatric clinic in Sweden. Semi-structured interviews were performedwith seven nurses of whom the first was a pilot interview, which was included in theresult. The recruitment of nurses was made by a purposeful sampling, maximumvariation sampling, with help of the quality coordinator of the pediatric clinic. Thecollected data was analyzed with the manifest qualitative content method.

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