Optimization of soil tillage and crop rotation is important in many aspects, but particularly in maximizing profit margins. Since the economic outcome is usually decisive, it can be interesting to study different combinations of soil tillage systems and crop rotations in order to identify the maximum economic outcome. How a crop functions in a particular tillage system determines whether it is profitable to grow that crop. Different tillage systems affect the soil and its processes in different ways. Reduced tillage often works best on weak-structured heavy clays and on silty clays.

Miljöproblem kan ses som ett växande problem. Studien visar hur stor kunskapen är hos gemene man angående särskilda miljöproblem och dess risker. I denna studie tas problemet upp angående miljö- och hälsofarliga metaller som ansamlas i slammet hos svenska reningsverk. Metallerna kan ge allvarliga hälsoeffekter på människan och förekommer i en rad kända vardagliga produkter. Studien grundar sig i en enkätstudie med 200 deltagande respondenter och syftet är att mäta deras kunskapsläge.

SammanfattningDet här projektet behandlar området Additiv Tillverkning (AM) för metalliska material och undersöker om det är lämpligt att använda vid produktion inom flygindustrin. AM är en relativt ny tillverkningsmetod där föremål byggs upp lager för lager direkt ifrån en datormodell. Teknikområdet tillåter i många fall större konstruktionsfriheter som möjliggör tillverkning av mer viktoptimerade och funktionella artiklar. Andra fördelar är materialbesparing och kortare ledtider vilket har ett stort ekonomiskt värde.En omfattande litteraturstudie har gjorts för att utvärdera alla tekniker som finns på marknaden och karakterisera vad som skiljer de olika processerna. Även maskiners prestanda och kvalité på tillverkat material utvärderas, och för varje teknik listas möjligheter och begränsningar.

The report addresses four main tasks, situation analysis of the company's total costs and transportation volume, cost analysis associated with the adjustment of the filling ratio, transport costs for the expansion and new expenses on a combination of expansion with new adjusted filling ratio.  Increasing transport costs for the company was the main reason for the request of the current situation analysis. A survey of the total cost with the actual volumes and transport provider pricing is the basis of the analysis that extends from May 2006 to October 2008. The results show an increase in costs, both overall expense and per cubic meter of transported goods. Volume spreads, trends, and seasonal variations are according to our and the company?s expectations.

SammanfattningDet här projektet behandlar området Additiv Tillverkning (AM) för metalliska material och undersöker om det är lämpligt att använda vid produktion inom flygindustrin. AM är en relativt ny tillverkningsmetod där föremål byggs upp lager för lager direkt ifrån en datormodell. Teknikområdet tillåter i många fall större konstruktionsfriheter som möjliggör tillverkning av mer viktoptimerade och funktionella artiklar. Andra fördelar är materialbesparing och kortare ledtider vilket har ett stort ekonomiskt värde.En omfattande litteraturstudie har gjorts för att utvärdera alla tekniker som finns på marknaden och karakterisera vad som skiljer de olika processerna. Även maskiners prestanda och kvalité på tillverkat material utvärderas, och för varje teknik listas möjligheter och begränsningar.

The purposes of this study were to estimate genetic and phenotypic parameters for conformation traits in Swedish Ardenner, a heavy draught horse, and to investigate the inbreeding status of the population. Additionally, a breeding scheme proposal was created, based on the results achieved in the study. The data studied were obtained from the Swedish Horse Board and from the Swedish Ardenner Association. The data included 1632 three-year-old horses, mainly mares, and 356 stallions, judged between 1986 and 2005 at conformation shows. The traits studied were type, head-neck-body, legs, walk and trot at hand, total score and height at withers.

Important issues for the local authorities are what to do with the sludge produced insewagetreatment plants. The tax for landfill leads to higher costs with 250 SEK/ton. On the 31December 2004 it will be forbidden to landfill sludge.In Sweden the yearly production of sludge is 240 000 tons, counted as DS. The phosphorouscontent is 3 % in sludge. The total yearly production of sludge gives 6000 tons of phosphorous.

 This study was conducted in autumn 2008 on the Company AB, which is currently in a growth phase. The company manufactures hydraulic systems for the heavy vehicle industry and has annual sales of approximately 250 MSEK with 165 employees.The rapid growth and unchanged planning is the starting point for this report. It all began in 2005 when the company received an unusually large order. During this period, the first priority was to satisfy customers and all other focus was disregarded. This has primarily resulted in a messy production and long throughput times.

En del fjällvandrare tycker att det är för tungt att gå med en stor ryggsäck, ett problem som har givit upphov till en idé om ett avlastande hjälpmedel. Företaget Prodelox AB har sedan tidigare påbörjat utvecklingen av detta hjälpmedel. Under detta examensarbete har ett koncept utvecklats med den initiala studien som utgångspunkt. Produktens grundidé är i dagsläget sekretessbelagd och kommer tyvärr inte att redovisas i denna rapport.En användarstudie genomfördes vilket resulterade i en kravspecifikation, produktens definition, samt en djupare bild av fjällvandring och andra friluftsaktiviteter. Denna djupa inblick möjliggjordes med hjälp av context mapping-metoden.

Uganda är ett utvecklingsland i östra Afrika. Landet har närmare 36 miljoner invånare och populationen är den fjärde snabbaste växande i världen. Det är ett underutvecklat land som är hårt drabbat av fattigdom och HIV/AIDS. Jordbrukssektorn är en av landets viktigaste inkomstkällor och även den största arbetsgivaren. Jordbruket gynnas av klimatet och landets bördiga jordar, men är underutvecklat och saknar moderna jordbrukstekniker.

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.

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.

Background: Following an increased awareness concerning social and environmental aspectsin society, more enterprises establish sustainability reports in order to inform theirstakeholders about the company?s sustainability duties. A previous study indicates that themetal sector is enjoying relatively limited increases in business opportunities and/or financialvalue of corporate responsibility. Another study suggests that there is a gap in expectationsbetween producers and users of sustainability reports due to an uncertainty regarding whatinformation such reports should contain and what audience such reports should target. Thequestion is whether or not a gap in expectations concerning sustainability reporting is acontributing factor to the limited increases in financial value in the metal sector?Purpose: The purpose of the study was to examine how a sustainability report should becarried out by a company in the steel industry given what information the company and thestakeholders consider as essential in a sustainability report.Methodology: To accomplish the purpose of the study, a deductive approach was used due tothe availability of suitable theories.

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.