The market for heavy duty engines is constantly requiring engines that should be more andmore powerful, while still maintaining low fuel consumption. As a result of increasing enginepower, the engine and coolant temperature increases as well due to insufficient coolingperformance (because of design issues, cost etc.).Also, emission legislations, both current and future, require more and more measures to betaken by engine manufacturers. One way of meeting the legislations is the use of cooled EGR(Exhaust Gas Recirculation), which also lead to increased coolant temperatures.Both these factors also naturally lead to increased engine oil temperatures, the consequencesof which are not thoroughly investigated.This thesis project aims to investigate effects of high temperatures on engine oil degradation,with focus on the greatest degradation process: oxidation. To do this several engine runs havebeen performed on a 310 hp engine with EGR to see what happens to the engine oil in a realengine when exposed to high temperatures. During the tests oil samples have been taken andanalysed for important parameters.As a complement to these engine tests some laboratory oxidation testing have also beenperformed, to be able to compare engine test data with laboratory tests.One goal of the project was to try to formulate an empirical oxidation model, which would beable to predict oil oxidation levels in an engine, given any running parameters.

Kostnaden för nyproduktion av hus i Sverige har ökat markant under de senaste åren. Byggföretag har svårt att hålla både projektens löptid och kostnader nere, vilket resulterat i ett ökat marknadspris och ett växande missnöje bland slutkunder. De ökade kostnaderna beror enligt forskning på vanligt förekommande slöseri i form av såväl material som arbetskraft. I försöken att eliminera slöseri har många företag anpassat sin verksamhet efter Lean Thinking, ett system som härstammar från den japanska bilindustrin, bestående av verktyg och metoder med huvudsyfte att identifiera och eliminera slöseri. Ur detta har även nya former av byggnation fångat marknadens intresse.

In today's agriculture efficiency and the capacity of tools and machinery are crucial. In this work we investigate whether it is possible to enhance the capacity of sowing by increasing the work speed of seeders, how seed technology affects seed placement, and if there is any difference between two different brands of seeders and their sow techniques. The seeders we have chosen to compare are Väderstad Rapid drill and Amazon Cirrus drill. The tillage capacity of the seeders and their traction power needs were examined as well.Väderstad Rapid and Amazon Cirrus were tested in a randomized block design with four replicates at three different speeds, 8 km/h, 12 km/h and 15 km/h. The seed placement at the different speeds was examined by dividing the seedbed into four different zones from its surface to its bottom.

SammanfattningDet är svårt för företag att konkurrera i dagens föränderliga värld där globalisering och ny teknologi driver på vikten av att vara konkurrenskraftig. Företagsledare har insett vikten av att ha en väl fungerande supply chain, där inköpare har visat sig spela en väldigt stor roll. Det är en av orsakerna till att inköpsfunktionen gått från att vara en ren administrativ funktion, till att vara mer strategisk. De behöver hantera en mängd olika processer och ta många viktiga beslut, som har betydelse för hela organisationen. Om skickligheten hos inköparna har betydelse för hur processerna och besluten hanteras, kan det i sin tur påverka hela organisationen.

Context: During the 21st century several alarming reports have been published that deals with the depletion and pollutant of the earth by human interference. The earth is an ending resource and so are the mountains and bedrocks which are continuously mined in order to harvest its minerals. The idea behind Urban Mining is to (re)invent processes enabling further purpose for materials both from old deposits and new products providing secondary raw materials and energy. This thesis aims to investigate the challenges and opportunities of how firms and organizations can and will be able to strike a better balance between product-/service systems, economic growth and environmental stewardship in the context of Urban Mining as an approach. With the innovation of processes, technology, business- planning and creation in focus.Objective: How to future proof a business model for Urban Mining by the usage of business model design.Method: This thesis will be conducted using a case study approach, meaning that it will incorporate qualitative, exploratory and descriptive characteristics - aiming towards enabling both applied and fundamental research.Results: The result evaluates the business model element differences between traditional C&D industry and Urban Mining industry.

Vilka kriterier a?r anva?ndbara na?r en leveranto?r av tja?nster skall utva?rderas? Beror det pa? om leveranto?ren levererar professionella tja?nster eller varor? Hur utva?rderas en professionell tja?nst? Dessa fra?gor a?r na?gra av problemen som inko?pare sta?lls mot, litteraturen besta?r av ma?ngder med kriterier och modeller fo?r inko?p av produkter men a?r bristfa?llig na?r det handlar om tja?nster. Litteratur sa?ger att besparingar pa? inko?p av tja?nster varierar mellan 10 och 29 %, medan pa? varor kan det endast variera mellan 5 till 17 %. Vid inko?p av tja?nster finns potentialen till att spara pengar, men kvaliteten pa? tja?nsten fa?r ej pa?verkas.

The inequality and separation of sexes seen in organizations may lead to inefficient use of human resources. Therefor, a more equal organization could lead to higher productivity and efficiency. Inequality within organizations is a problem also for the society as a whole since who is chosen for a position is not depended upon merits, leading to inefficiency. To not reflect upon traditional division of labor and decision-making could also lead to an undemocratic and unjust society. The aim of this thesis is to explore women and men?s engagement a family business in an agricultural setting. Gender theorists argue that gender arises from the social situation in society.

Abstract Title: Ethanol for Scania?s future ? A scenario based analysis Authors: Anna Hansson and Julia Persson Tutors: Annette Cerne ? Department of Business Administration, Lund University Jonas Holmborn ? Head of Advanced Combustion, Engine Development, Scania Lennart Thörnqvist ? Department of Energy Sciences, Faculty of Engineering, Lund University Problem: Oil-based products are the dominating fuels in the transport sector but alternative fuels are currently challenging the world-wide dominance. The large number of alternative fuels that are under development at present makes the future fuel-market impossible to predict. Scania?s ethanol project is associated with a number of uncertainty factors that are beyond the company?s control.

Canine dilated cardiomyopathy (DCM) is a disease with high morbidity and mortality and with a high prevalence in certain breeds. Predominatly large breeds are affected, such as Great danes, Newfoundlands, Deerhounds and Dobermanns. One exception is Cocker spaniels, where both American and English Cocker spaniels are affected in a quite high frequency. Cardiomyopathy is characterised as a disease that affects the myocardium and gives an impaired heart function. To diagnose DCM following criteria have to be observed: 1. Dilation of the left ventricle. 2. Reduced systolic heart function. 3. Increased sphericity of the left ventricle. To be certain of the diagnosis, alternative reasons for the symptoms such as lung- and heart diseases with other etiologies have to be excluded Two different types of DCM have been found upon histological examination.

The aim of this study was to in laboratory experiments investigate how addition of urea, ECOX and structural materials can optimize sanitization during composting of sewage sludge. Today we strive for a sustainable society and the importance of closing the nutrient loop increases. It has therefore become even more important to safely reuse plant nutrients from human excreta to agricultural land. Partly because it increases the sustainability of society as the world's supply of many nutrients are finite, partly because it promotes human health, both by reducing disease transmission and by increasing Agricultural production. An untapped resource such as sewage sludge that is rich in nutrients and humus-forming materials could replace parts of the commercial fertilizers used in Sweden today. owever, sewage sludge contains undesirable substances such as heavy metals and drug residues, and pathogenic microorganisms.

Malaria är en farlig tropiksjukdom orsakad av parasiten Plasmodium som vållar många dödsfall varje år. Sedan några år tillbaka rekommenderar Världshälsoorganisationen (WHO) användandet av artemisinin och dess derivat för behandlandet av malaria. Artemisinin syntetiseras normalt i växten Artemisia annua i lågt utbyte. På grund av det låga utbytet är läkemedlet väldigt dyrt. Då parasiten blivit resistent mot de flesta malarialäkemedel är artemisinin ett viktigt preparat i kampen mot malaria.

Bakgrund: Den svenska transportmarknaden domineras idag av stora och internationella aktörer. Marknaden är mogen vilket innebär att transportbolagen måste erbjuda andra värden utöver själva transporten. Begrepp som miljö ligger långt ifrån transportsektorns grundtanke och blir därmed inget naturligt konkurrensmedel. Internationella undersökningar visar att transportbolagen lägger stor vikt vid miljöfrågor när det kommer till framtida strategier. Svenskar har en tradition och en image att vara miljövänliga men detta intresse har ännu inte besvarats av transportmarknaden.Problem: Vilka faktorer är viktiga för att svenska transportföretag ska kunna uppnå långsiktig överlevnad med en miljöprofilering?Syfte: Syftet med denna uppsats är att analysera och utvärdera oöverensstämmelser (misfits) mellan transportköparen och transportleverantören med avseende på miljö.Metod: En kvalitativ ansats har använts för att samla empiri.

This report analyzes and examines a hypothesis for finding a method to optimize thelength of the delubrication process time based on a total charge weight. The work hasfocused on the holding time for delubrication and the total charge weight.An important step in the manufacturing chain of cutting tools is when the greenbodies undergo the sintering process. Today, the delubrication step has the sameprocess time independent of the total charge weight. An implementation of a methodto adjust the delubrication process time would give more consistent quality of thecutting tool´s internal characteristics but also reduce the time course of the sinteringprocess. In the present project two methods for this goal were tested, thedevelopment of an algorithm and a weight interval subdivision with associateddelubrication process times.During delubrication a pressure increase is observed due to the decomposition of thePEG in the powder mixture.

We live in an exciting society, characterized by continuous changes and challenges. The effects of the globalization are widespread. The continuous flow of people, capital and goods follows in the wake of advances in communications, transport and information technology, resulting in a changed situation for different stakeholders in the society. This situation leads to increased cooperation and exchange, but also increased competition. The primary means of collecting empirical data for this study was interviews and a document study.

Bakgrund: Promotion av hälsa och prevention av ohälsa är en av många viktiga uppgifter för hälso- och sjukvården. Sekundärprevention efter akut kranskärlssjukdom innebär åtgärder för att både på kort och lång sikt minska död, återinsjuknade och fortsatt sjukdomsprocess. Förändringar i levnadsvanor påverkar oftast flera riskfaktorer samtidigt. För personer med känd livsstilsrelaterad sjukdom betonar Socialstyrelsen i ?Nationella riktlinjer för sjukdomsförebyggande metoder? att sjukvården ska erbjuda rådgivande samtal kring ohälsosamma levnadsvanor och att det är en betydelsefull uppgift för hela vårdkedjan.