ABB Surge Arrestors in Ludvika have for a long time had a problem to keep the moisture at a steady state in the production of their ZnO-powder, that is used to produce varistors.Some black-box models of the spray drying process have been designed and evaluated to find a solution for the problem. After evaluating the collected data it has been found that variations in the supply voltage causes control difficulties for the operator. A cascade control system was designed, consisting of three PI control loops designed with lambda tuning. The disturbance in the supply voltagewas used as a feed forward in the control system.At the end of the project the control system was installed, and tests were made to verify the functionality of the regulator. It was shown that most of the variations in the moisture of the powder could be eliminated using small resources, through purchase of a process controller and four power meters.

Background: Since the early 60?s, the CAPM or Capital Asset Pricing Model, has been an invaluable tool for assessing an asset's expected return, assuming that the asset is added to an already well-diversified portfolio of assets. CAPM theory assume that the unsystematic risk can be diversified and that the systematic, market-specific, risk is determined by the Beta value, from the Greek ?. An investor who takes big risks expect higher returns.One of the CAPM?s basic assumptions is that disruption in the market is not taken into account.

Åfors glasswork was a company which started in 1876 and closed in 2012 due to the bad economical situation in the company. After its closure, the glasswork left behind contaminated soil with different concentrations of heavy metals such as, arsenic from arsenic trioxide, a chemical used to remove bubbles during the melting of glass, and lead oxide, a chemical used in the production of crystal glass. Crystal glass?s production occurred under 1921-1971, but emissions of lead into the air from Åfors glasswork continued until 2011, because of the artist Bertil Valliens? artglas was made in Åfors glasswork from 1970?s and onwards.The aim of this study was to estimate how much lead (Pb) and arsenic (As) that were released by Åfors Glasswork into the atmosphere during the operational period of the glasswork in comparison with how much of lead and arsenic were purchased for the company. Added to the assistance of the data from National Archives the variations in the activities of Åfors glasswork could be shown.

The usage of internet is growing significantly every year in today?s society and whether you like or not, the internet has an influence in your life. It is therefore important to find out how people are affected by its use. We have through our study interviewed a number of people that uses internet on a day to day basis, who have agreed to live without internet access for a period of time. We started out by interviewing these people about their internet usage and what it means to them, then proceeded with their non-internet access period.

Intergovernmental Panel on Climate Change (IPCC) recognizes glaciers as the best land-indicator of climate change. A variety of studies have concluded, using both modeling and field studies, that above all climate parameters precipitation, particularly winter precipitation, and summer temperature controls the change in glacier mass balance. With global warming almost all glaciers on Earth are losing mass. In this study, the summit-glacier constituting Kebnekaise's south summit (called the Southern-summit henceforth), Sweden's highest point, is studied to see how it is affected by winter precipitation and summer temperature during the period 1968?2013.

This report is written on the assignment by Nexans IKO Sweden AB in Grimsås which is a cable manufacturing company. Nexans IKO Sweden AB was in need of help to examine possibilities for saving energy by saving compressed air, in first place by using the compressed air more efficient. The task was to determine the present situation, making the airwipe stations more efficient by reducing the consumption of the compressed air and in turn save money. Even the aspects of the working environment were discussed as the noise levels from the pneumatic systems and engines are usually high. A schedule over the airflow in the factory and the inventory over current airwipessituation was made.

3nine has developed oil mist separators for the manufacturing industry. They are used in factories and workshops in Sweden as well as many other countries. The basis for this thesis is to investigate the performance of these separators in applied environments under different circumstances and to find factors that influence the performance. It has been shown both theoretically and in laboratory environments that the sizes of the particles in the oil mist influences the performance of separation. This is to be verified under applied circumstances as well.The separators also have in most cases, after the centrifugal separation, HEPA-filters mounted that separates the remaining oil mist.

This paper concerning the regional architectural term known as the Tjust Empire style analyses manor houses built in the Tjust area by the east coast of Småland in the period 1810-1860. The term Tjust Empire style was invented in 1937 by PhD. Manne Hofrén in his dissertation on architecture in Kalmar län in the period 1650-1850. The aim of the paper is firstly to determine whether there is a distinct difference between the regional Tjust Empire style in architecture and the common Swedish empire style or as its Swedish equivalent is known; the Karl Johan style. Secondly, the paper strives to analyse why and how the Empire style became so popular in the area during this period, focusing on architecture as a means to express social identity and status.

This paper includes astudy of the mutual fund market investors during a selected timeperiod. The reader is given a descriptive picture of how people in different age groups have  acted  in  conjunction  with  the  last  major  financial  crisis.  It  has  been  studied whether people in the different age categories have saved,purchased or sold during this time  period  based  on  theories  and  analytic  material  from  one  of  the  largest  fund operators in Sweden. The result enlightens people?s activity and risk appetite in relation to the fund market. The essay results in an explanation of the underlying cause of the behavior        of         the         people         in         the         different         age         categories.The paper assumes that the market is cyclical and that more crises will occur in the future.

This study aims to scrutinize the four major banks in Sweden on how their profit havedeveloped over a time span of 15 years, whether stricter regulations have had anyimpact on financial key ratios and if there is any correlation between the banksprofitability and their risk taking. The period covered is the years 2000-2014. Thefigures are annually and the four major banks are; Handelsbanken, Nordea,Skandiviska Enskilda Banken (SEB) and Swedbank.The findings are that financial key ratios that include net income are pro-cycle whereSwedbank has the biggest volatility over the period and that the three other banks areless, but clear pro-cycle. There are also indications that stricter rules have madeimpact on the volatility of the profitability even though the period covered is notenough to ensure this claim. Nordea has had the lowest and most stable capital ratiothroughout the period and the other three banks lowered their debt-to-equity ratiosignificantly after the financial crisis in 2008.

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.

The aim of this essay is to find some of the main developing tendencies in the advertisement genre during the period of 1930-2000. The analysis is based on three examples of Gevalia cinema and TV-advertisement. Research findings are the result of using theories from different but relevant sciences, which are media, linguistics and rhetoric. Media studies help to explain the influence of the society and technology development on the advertising business. Linguistics and rhetoric give the main methods and terminology for the basic as well as comparing analyses of the three advertisements in question.

At present, the Swedish pig industry is in transition. Prices have been low, but feed prices have increased. Therefore, many pig producers have stopped their production. Producers that lack an integrated production may contract piglet?s producers, or may use the mediation services that slaughterhouses provide.

Syftet med denna studie; en en-grupps före- och eftertest, var att beskriva förekomstfrekvens av alla PRIM-VIPS sökord i omvårdnadsjournalen på en vårdcentral före och efter en studiecirkel där distriktssköterskor (n = 19) och undersköterskor (n = 7) deltog. Två tidsperioder om vardera tre veckor valdes, en före studiecirkelns start och den andra när studiecirkeln var avslutad. Tidsperioderna var representativa ur både patient- och personalhänseende. Det totala antalet patientkontakter i respektive period bedömdes vara jämförbara. Samtliga distriktssköterskor och undersköterskor inbjöds till studiecirkeln, inbjudan sändes också till vårdcentralsledningen för kännedom.

Barren rearing environment and early weaning of piglets can lead to a high level of distress, behavioural disturbances and reduction in weight gain. The main aim of this thesis was to study the effects of potential enrichment objects on piglet?s behaviour and weight gain during the pre- and post-weaning period. The second aim was to examine what type of object stimulated the highest frequency of interaction. The study was carried out at the Swedish Livestock Research Centre in Lövsta where a batch of litters from 10 first-parity Yorkshire sows were used.