Carbon dioxide in the atmosphere contributes to the greenhouse effect, which is essential tolife on our planet. Furthermore, it plays an important part of the photosynthesis andrespiration of the world?s organisms. Since the start of the industrial revolution the amount ofcarbon dioxide in the atmosphere has increased exponentially. The main source is theextensive burning of fossil fuels.

Energy costs are high nowadays and that is the reason why the energy consumption needs to become as small as possible in most of the companies. To accomplish the small energy usage one needs to map the energy flows, study them and monitor them. One method that can be used for this is energy balance calculation. The method gives an opportunity to separate different energy flows and see where each flow is heading. There is also another method which is more advanced than energy balance calculation.

An important process for grid companies in order to reduce power losses in electricity distribution grids is to figure out where and how they appear. This report describes the factors that cause power losses in low voltage distribution grids and methods for how they could be measured and analyzed. Measurement data for consumed and injected energy were collected for twelve low voltage distribution grids owned by Gävle Energi AB in order to analyze the size of the power losses and how the measurement uncertainty affects the collected data. Then models of three of the grids were created in MATLAB in order to analyze the data and the power losses were calculated to be compared to the collected data. Curve fitting were also used as a method in order to analyze the power losses from collected data.The results show that the losses in the studied grids are low.

This report relate a concept study that consider a number of different proposals to improve the overcharging system in BAE Systems Ha?gglunds tracked vehicle series BvS10, to maintain sealevel power at extreme altitude.At high altitude the power losses beacuase of the air density that decreases, which results in less fuel can be burned. The decreasing of air density also gives rise to fatigue failure of the turbocharger unless power is reduced.The proposals shall be as required by BAE Systems Ha?gglunds economically sustainable and defensible from a packing perspective. That means the selected solution must have a reasonable price tag and at the same time a minimal impact on adjacent components.The basis for this thesis is based on benchmarking of both the auto industry as the flight industry, to find inspiration and tips for improvement.Some of the concepts have after gathering facts and calculations been excluded while other solutions has been considered as workable and thus interesting for BAE Systems Ha?gglunds.Initially the current turbochargingsystem was analyzed in order to determine the starting point and thus be able to fix the current problems surrounding high altitude driving.

The project has been done in cooperation with Schenker Åkeri AB in Sweden, Halmstad. Theproject is based on an inspection made by Arbetsmiljöverket, where they found minorshortcomings with distribution of goods for the employees. The project is an investigation ofthe drivers? working environment.Schenker Logistics is one of the world's leading providers of integrated logistics services.Schenker Åkeri AB is a subsidiary to Schenker Logistics and transports 2.4 million tons ofgoods yearly.The project started with a background study to evaluate drivers working environment. Wehave studied goods receptions, the working environment, strain injury and injury mechanisms.Methods used was observations, tests, questionnaire surveys and ergonomic andbiomechanical calculations.One result of the study is a working model, which gives recommendations for the maximumweight a driver should push and pull.

Uppsala County has ambitious environmental aims for the planned residential area inÖstra Sala backe. In this thesis different energy sources have been evaluated todetermine which system that would be most favorable given currently availableinformation about the project. Planned energy usage has been divided into tap waterheating, space heating and power. Three base case scenarios were made with districtheating, small scale bio fuel and heat pump. Solar power and solar heating were thensimulated and the production from the two could individually be deducted from theenergy need in the base cases, constituting 9 different scenarios.

In an international perspective the Russian children s library is a unique institution, being solely committed to children up to 14 years of age. In Russia of today it is, however, being exposed to hard pressure as the economical and social conditions have changed dramatically since the collapse of the USSR. My interest lies in examining this change of living conditions for the children s libraries and how this in turn affect their work and role in the present state. In order to view this change in a longer perspective, I compare the situation for children s libraries during the time of communist regime with that of today using documents about and from children s libraries. I have studied its legal position and conditions, financial and political state, and how the modern society affects children and youth, especially their daily cultural life.

This essay includes the planning and designing of a house as well as writing a rapport about howto increase fire safety in small buildings.More than 6000 homes burn in Sweden every year (Brandskyddsföreningen, 2012c). Thedevastation and the costs are usually very high. This report examines possible measures to reduceboth personal injuries and economic losses resulting from house fires in small buildings.Swedishbuilding regulationsplay a major role when it comes to constructional fire safety. However therequirements inSwedish building regulations are very low for small buildings and this is anargument for raising the requirements.The report shows and describes possible methods to build safer with regards to fire in terms ofmaterials and different building structures. Major focus has been on fire cells but other solutionsare also examined and described.

Bakgrund Övervikt och fetma är ett komplext världsproblem framförallt relaterat till en stillasittande livsstil i kombination med ett högt energiintag. En kostomläggning i samband med träning har betydelse för både viktminskningsresultatet samt risken att drabbas av överviktsrelaterade följdsjukdomar. Det har setts en svårighet i att avgöra vilken kostinformation på internet som ger ett långsiktigt viktminskningsresultat.Syfte Syftet med studien var att studera inställningar till kostråd hos personer som tränar i viktminsknings- eller viktstabilitetssyfte.Metod Till studien valdes en kvantitativ metod där en länk till en webbaserad enkät på 20 frågor delades via Facebook. Datamaterialet bearbetades och analyserades i SPSS version 22. Deltagarna grupperades in i grupperna viktnedgång och viktstabilitet, och undersöktes utifrån frågeställningarna.

Breakdowns of welded structures are usually a consequence of fatigue loading. Fatigue fractures are commonly initiated in the region close to the weld toe but can also initiate from the weld root and from discontinuities inside the weld. The purpose of this investigation was to examine the weld quality of welded joints produced at Volvo Wheel Loaders factory in Arvika. The goal of the investigation is to give a clearer insight regarding factors influencing the fatigue strength of the welded joints and thereby give a better foundation for fatigue strength calculations.The investigation is including examination of the weld geometry, weld discontinuities and the effects of shot peening. Mainly three different methods for collecting test data have been used: Plastic replicas cast on the weld profile, weld specimens from a rear frame belonging to a wheel loader of model L110E/120E and Almen testing of the shot peening.The results showed that it is not possible to control even transition between the weld material and the base material without after treatment.

Tången 2 is a building situated in Stockholm, Sweden. It´s built in the 1930s and contains both residences and businesses. The property owner, Diligentia AB, wants to lower the energy use in Tången 2. This report consists of an energy audit which clarifies the specific circumstances linked to Tången 2. Collected knowledge is then used, together with the results from the literature study, to decide energy measures to proceed with.

Calculations of net present value are based on a discount rate, which requires knowledge about the company?s cost of debt. A common way to do this is by observing the company?s credit rating, when no credit rating is given it?s possible to use a synthetic rating model based on quantitative data to estimate a credit rating. Thus, the aim of this study is to increase the understanding of which quantitative data, in terms of key figures, that can be used to explain the given credit ratings for companies from the Nordic countries.In developing the model, key figures found significant in previous studies are being tested for whether or not they are applicable for companies from the Nordic countries.

The aim of this report is to analyse the use of the capacity at the CNC (computer numerical control) cutters and show how the level of set up time for these cutters at Stålöv AB. This assignment is concrete whereas there are no subjective questions to this matter and there are only cold figures presented.Production economy is getting more important as the competition hardens and there are several different ways to increase productivity and efficiency in a company. In order to increase productivity and efficiency work studies are used to, through an analysis, find developments in methods that result in improved work methods and to establish the time that are used. Increased production of different parts and customer driven production in combination with increased demands on rationalisation of capital have led to an enlarged interest for shorter set up times in the production.To point out the use of capacity and the set up time of the cutters at Stålöv AB we used frequency studies. Frequency studies are work measure methods based on random observations on predetermined events to calculate the relative occurrence of these events.

Background: At the turn of the year 2004/2005, IAS 19 replaced Tryggandelagen (TrL) and RR 29 as the accounting standard in Swedish concerns. This introduction was associated with a certain apprehension for the possible changes in the companies? pension liabilities and equity.Purpose: To illustrate the difficulties of the introduction of IAS 19 by observing how it differs from TrL, and what kind of problems these differences can cause.Procedure: Individuals who are well up in, and work with pension liabilities have been interviewed. After this follows an example of the calculated pension liability of a company, to illustrate the differences between the calculations according to TrL and IAS 19. To conclude the chapter, a comparison between a number of companies from the Stockholm stock exchange is made to establish their various actuarial assumptions.Method: The essay mainly follows the qualitative research method, since this method is more appropriate when the substance in the matter is based on detailed differences and opinions.Results and conclusions: The introduction of IAS 19 has taken time and been an expensive matter, although the expenses weren?t as great as feared.

A controlled recording in a studio is the basis of all voice treatment. However, this controlled way of recording voice patients' voices can be questioned. The voice use may be different in a natural environment. In children noise related voice problems are investigated in a study about voice and its development (BUG ? Child voice and noise).