Formulation and testing of a new type of chainsaw lubricantThe company Agro Oil has come up with the idea of developing an environmentally adapted chainsaw lubricant with a new unusual base fluid. A field test with a tree-harvester shows unsatisfactory low temperature properties and high wear. In this work the viscosity, price and pour point of different combinations of the given base fluid and three other base fluids have been investigated. Desired viscosity and price are determined for different formulations. The new lubricants tested show lower pour points than almost all products on the Swedish market.A test equipment has been developed to investigate the wear.

Bakgrund: Globalisering har gjort försörjningskedjan till ett komplicerat nätverk med många påverkande faktorer. I försörjningskedjan är valet av anläggningars position viktigt för att företag ska behålla sin konkurrenskraft. Valet av lagerlokalisering har stor påverkan på ett företags framgång.  Problem: Lagerlokalisering är en komplex process med många faktorer som påverkar, att praktiskt tillämpa existerande modeller är komplicerat. Det saknas ett konceptuellt ramverk för lagerlokalisering. Syfte: Syfte med examensarbetet är att skapa en konceptuell modell för beslutsfattandet för lagerlokalisering för mindre företag, att finna relevanta faktorer samt att praktiskt göra en förstudie för ett företag med verksamhet i Norra Europa.

Due to increasing regulations regarding new diesel vehicles particulate matteremissions the new Scania truck, Scania Euro 6, has been equipped with a particulatefilter. This component effectively stores the particles in the exhaust gas but must becleaned in order to prevent itself from clogging. The filter is cleaned through aprocess named regeneration which is a thermodynamic process in which thetemperature of the filter is raised through fuel supplied to the exhaust gas.The purpose of this thesis is to contribute to the development of improved controlstrategies of the temperature during the regeneration process through thedevelopment of model-based controllers. These controllers are designed in order tohave good performance in stationary as well as automatic regeneration.In order to develop these model-based controllers a model of the system isconstructed. The model is described as a linear thermodynamic grey-box model withflow varying parameters, showing good results in validation.The model provides a simulation environment during the controller design, which isfocused around the development of linear regulators with the exhaust gas mass flowas a scheduling variable whose size determines controllers? mode of operation.

The purpose of this study was to make a survey of a larger company in Sweden to analyze if it complied to the stipulated Systematic Work Environment Management rules in Sweden. The company chosen was Hennes & Mauritz. The key question was to see if the company was examining and judging the risks, developing handling plans and if they were making yearly follow ups so that problems could be attended to. Further, I also wanted to examine if there was lack of competence within different departments as well as give some substantiate proposals on educations in Systematic Work Environment Management. The method used to investigate this was interviews and observations on how the Systematic Work Environment Management was handled in the company.

This thesis will describe the redesign of the manure fork SverigeGrepen. The productis available for purchase in Scandinavia and and parts of the rest of Europe.The product is available in stores but the companys goal is to start distribute it overthe internet. A problem today with a purchase over the internet is that the costumerhas to pay a high shipping-fee due to the products unique form. The long handlecontributes to the high shipping-fee which makes it hard to attract costumers topurchase the product online. Deficiencies have been found at the manure forks basketand needs to be examined.

Soapnuts have been used as a cleaning detergent and medicine since ancient times in different parts of Asia. Today soapnuts are sold as an environmentally friendly alternative to common washing detergents. The aim of this literary study is to give an answer to what it is in the soapnuts that makes them work as a washing detergent. The active component belongs to a group of components called saponins which are secondary metabolites with the purpose to protect the tree from pathogen attacks. Saponins are widely spread in the vegetable kingdom and some of the families and species are so rich in saponins that their names are influenced by this, for example Sapnindaceae and Sapindus which are mentioned in the beginning of this literary study.

As the Swedish governments long term goals include a reduction of fossil fuel dependency, increasing pressure is placed upon energy companies to create and develop new solutions for renewable energy. The following case study was done in collaboration with the company Sydved Energileveranser AB and one of their contractors, Enarssons Skogsentreprenad AB. The objective of the study is to examine the bioenergy situation in region of Skåne and evaluate the potential solutions in the region for a forest-fuel assortment, based on a bioenergy-cutting-system. As a part of this study I have compared ordinary manual cuttings done with a chain saw and cuttings made using the new ?bio- energy cutting system?. The cuttings made under both systems were tested in areas near agricultural fields or pasture land in order to maintain an open landscape.

This final thesis consists of an investigation of how suitable it is to vertically integrate forest in Swedish forest companies. Different strategies to obtain raw materials have been evaluated and the advantages and disadvantages have been weighted against each other. The investigations contain a number of interviews with represents from companies with different strategies and persons that in different ways have faced the question of issue. An account study of SCA´s forest ownership has also been performed. The benefits for a forest company to vertical integrate forest consist mainly of safety in delivery, control over the supply chain and company image.

When a combined heat and power plant produces heat and power it often faces a deficit of heat load during the summer or other periods of time. This heat is often unnecessarily cooled away or the power production has to be reduced or shut off. If it is possible to store heat from periods with low heat demand to periods with high heat demand one can get many benefits. Among these benefits are: increased power production, decreased operation with partial load, uniformly distributed load.To be able to store heat in situations like this long-term thermal heat storages are needed. In this thesis five different types of stores are presented: rock cavern storage, tank storage, pit water storage, borehole storage and aquifer storage.

A persistent problem in the construction industry is its low margins of profit. It is often difficult to earn money due to low efficiency and high costs. Logistics on the construction site answers for a large amount of these costs and it is therefore of interest to find new, more efficient logistic solutions. The purpose of this thesis is to compare two different logistic systems and further to evaluate which one that is the most efficient and profitable. A comparison is made between the traditional logistic systems used for years and a new logistic system developed by an industry association called BEAst.

When communications traffic increasingly turned into data, IP telephony became a disruptive technology for the telecommunication business. IP telephony was a hot topic when voice over IP services started to become available to consumers in the 1990s. The new technology changed the rules of the game and many new actors entered the market.The purpose of this study is to describe, study, and analyze how the business models of the Swedish telecom sector developed in the middle of the 2000s. The study is delimited to the Swedish consumer market for telephony.The study is built mainly upon deep interviews with 24 prominent persons in the telecom sector in 2006. To aid understanding, two telecom companies that have been chosen to represent different kinds of actors are described and analyzed more closely.

This essay is about the history of the Swedish board game-industry from the 1970?s to today. The essay focuses on the companies in the business and how they change during this period and about the causes of this change. This essay aims both at accurately describing the development of the industry as well as asking the question of what influence factors from outside of the industry have upon the change during this period of time. The material used in this essay is mainly extracts from interviews with people who have been working in the industry during the period, as well as literature on the subject and product-catalogues from certain years in the time-frame.From this material I have outlined the basic history of the industry.

In this report listed buildings, according to the Swedish Heritage Conservation Act, have been studied with a focus on cases where economical compensation has been given to the owner of the building and cases where the listing of the building has been appealed by the owner. In order for a building to become listed it needs to be particularly valuable from a cultural and historical standpoint. The listed buildings are protected through a list of regulations that determines which parts of the building can or cannot be changed, what methods and materials should be used for changes and repairs, and how the building should be maintained. These regulations should as far as possible be formulated in agreement with the owner, but a building can become listed against the owners will. To decrease the damage this causes the owner he can in some cases have the right to economical compensation. There is also a possibility for the owner to appeal the listing of the building.

Att skapa fördelar med lean kräver en gedigen hängivenhet i tillämpningen av lean filosofin. Studier har påvisat svårigheter hos medelstora tillverkningsföretag vid tillämpning av lean att skapa synergier mellan hantering av efterfrågan och lagerstyrning. En efterfrågehantering som skapat ojämnt flöde utav produktionsorder som lett till problematik med voluminösa och inkuranta lagernivåer.Med den problematiken som grund har en fallstudie utförts på ett medelstort tillverkningsföretag. Studien har syftat till att undersöka brister i efterfrågehantering, produktionsplanering samt lagerstyrning hos fallföretaget utifrån ett lean perspektiv samt föreslå förbättringsåtgärder. Studien har antagit en hermeneutisk utgångspunkt med en deduktiv ansats där teori först studerats för att sedermera samla in empiri för jämförelse.Resultatet av studien blev förslag på förbättringsmöjligheter för fallföretaget som då besvarat frågeställningarna hur ett tillverkningsföretag kan förbättra både sitt interna och externa lagerflöde.

Tissue factor (TF), a 47 kDa glycoprotein, is the initiator of the extrinsic pathway of blood coagulation and consequently of the upmost importance when damage to blood vessel occurs. The source of TF in circulation has been investigated. However, the source of TF is still not clear. One theory is that platelets express and increases the expression of TF after stimulation and the aim of our report was to investigate whether platelets really are a source for TF in circulation.Using specific primers for TF mRNA, platelets in plasma from healthy volunteers and from patients suffering from cardiac infarction were analyzed by using real-time polymerase chain reaction (PCR). Gel electrophoresis was performed after amplification of TF mRNA to verify the results.The samples were negative for TF when using real-time PCR and the few positive all had cycle threshold (Ct) values above 35.