The goal of this paper is to find out how solar cells can improve energy efficiency on-board M/S Sydfart. The paper is based on a number of energy measurements on board the M/S Sydfart. The solar surface is calculated by measuring the available space for installing solar panels. Global radiation data is taken from STRÅNG's database, the data is then used to calculate the theoretical power produced by the solar cells. Energy efficiency is analysed in two ways.

EGR (Exhaust Gas Recirculation) är en teknik som används för att minska utsläppen av kväveoxider från förbränningsmotorer. Med EGR återcirkuleras delar av avgaserna till motorn vilket medför att sot och andra partiklar samt sura ämnen återförs. Därmed ställs det nya krav på motorns material och det gäller framförallt motorns cylinderfoder och kolvringar som detta arbete inriktar sig på. Syftet med arbetet är att med hjälp av en nötningsrigg sålla mellan olika material och ytbeläggningar under EGR-liknande förhållanden samt att undersöka olika faktorers inverkan på slitaget. En nötningsrigg av typen pinne-platta används där en del av en kolvring förs fram och tillbaka över en provbit från ett cylinderfoder.

This project has as main goal to study the influence of the coating thickness, deposited by arc-PVD- technology, on the wear resistance of coated cemented carbide inserts in three different turning operations. An additional effort has also been made to develop a new test method for evaluating flank wear resistance. Three different coating types (Coating A, Coating B and Coating C) have been studied in three distinctive thicknesses (2, 4 and 6 µm) for each type. For two of the coating types (Coating A and B) special studies has been done with the thickest coating, creating two additional coating versions of the thickest coating, by changing various deposition parameters, with the aim to enhance the cohesive properties of the coating and lower the residual stresses at the cutting edge. The results show increased crater wear resistance with increased coating thickness for all coating types, but the amount of increase changes with coating type (Coating A>B>C).

On board ships different type of maintenance activities take place. Some of those require working with vibrating handheld tools. Traditionally there is a high awareness of the risks with different type of duties such as protecting the skin from oil or other chemicals, the eyes from splashes and hearing from high noise levels. The experience we have from our time as on-board cadets are that there is less information about vibration hazards available compared to the information concerning other hazards on board.There are threshold values that workers, by law, are not allowed to exceed when working with handheld vibrating tools. The purpose of this study is to investigate how common the use of this type of equipment that can cause damage by vibrations, to the hands and arm amongst the deck crew, and if the crew informed about the risks involved.

Swedish doctrines emphasises the use of maneuver warfare in combat. Therefore we need tounderstand how a modern state can transform maneuver theories in doctrine into combat practice.United States Marine Corps, a joint armed force in itself, has participated in both Desert Stormand Iraqi Freedom and has since the 1980?s used a maneuver warfare concept. The aim of thisessay is to describe and explain to what degree USMC has conducted maneuver warfare in theIraq wars 1991 and 2003 according to maneuver theory, in the light of how maneuver warfareis thought to be conducted in accordance with then present warfighting doctrines. Theconclusions are that USMC has followed their doctrines in part; the Desert Storm warfaredeviated more from doctrine than the Iraqi Freedom warfare regarding maneuver warfare.

Pharmaceuticals that are found in marine ecosystems are a threatening environmental concern, which is known to harm both animal and plant life. One of the reasons for this problem is that the waste water treatment techniques are not optimized to clear waste water from its pharmaceuticals contain. In this master thesis four Swedish treatment wetlands were studied, and their ability to reduce numerous pharmaceuticals in waste water. The four treatment wetlands that were studied were those in Oxelösund, Trosa, Nynäshamn and Eskilstuna. Two ecotoxicological tests and chemical analysis were used.

The company Olofsfors AB manufactures drive belts for forest machinery, known as ECO-Tracks, and abrasion-resistant steel and cutting edges for graders, excavators and tractors, known as Bruxite and SharqEdges. Manufacturing these products requires the steel to be heated and molded, then submerged in water and hardened. The water used in the hardening of steel is pumped to the process from pits below the floor and then pumped back to the pit after it?s been used. Since the temperature of this water rises after being used to harden the steel the temperature of the pumping pit needs to be adjusted to maintain its setpoint of 21°C.

Försvarsmakten beskriver i Arméns utvecklingsplan 2010-2020 att tre dygns uthållighet på taktisknivå inte är tillräckligt utan bör vara mer flexibelt så att den även passar mindre enheter som skall kunna verka över stora avstånd utan möjlighet till egen logistik. Syftet med uppsatsen är att utreda vad trovärdig uthållighet är. Att utreda om tre dygns uthållighet på taktisk nivå är tillräckligt eller om denna bör utökas till mer än tre dygn. I uppsatsen beskrivs vad som står skrivet i olika dokument från Försvarsmakten vilka styr uthålligheten. Det beskrivs även hur Försvarsmakten avser att uthålligheten skall se ut i framtiden.

A lot of mine waste rock and tailings arise from all mining processes and have to be stored in an appropriate way. Tailings are deposited in impoundments retained by tailings dams. The objective of tailings dams is to retain the slurry from the mining process and in that way prevent spill into the surroundings that might be harmful for the environment. Tailings dams are often constructed as staged embankments so that construction costs and demand of materials are spread more evenly over the period of deposition.The objective of this thesis has been to compile information about and evaluate events at Swedish tailings dams and also to develop a collective database for all Swedish mining companies for all tailings dams and all events that occur at tailings dams.Information about 60 events at Swedish tailings dams has been gathered and evaluated. The evaluation has been performed by comparison between and analysis of individual parameters and also by use of a multivariate statistical method called PLS.

The system tungsten-oxygen has potential of being suitable for decorative coatings since ceramic coatings are often hard and wear resistant, and since modulations in oxygen content or incorporation of small ions could give bright colours. The aim of this report was to investigate the relationship between process parameters and  the properties of the films, with the wear resistance being of special interest.Samples with tungsten to oxygen ratios in the range of 100:0 to 25:75 at% were made using reactive sputter deposition, either with constant gas flow, or gas flow controlled by optical emission of the plasma. The hysteresis of the system, which means that a certain gas flow will cause different pressure and/or target voltage depending on in what way the flow is reached, makes it interesting to control the process where the system makes the steep change from metallic tungsten to ceramic tungsten oxide. This is difficult and thus requires precise control equipment.The samples were analysed using X-ray diffraction, X-ray photoelectron spectroscopy and an empirical wear test suitable for small components like cell phone cover for example, in order to characterize the structure, composition and wear resistance of the coatings. The results could be divided into three groups: (I) tungsten-like, with very low oxygen content; (II) mixed phase and (III) tungsten oxide like, with oxygen content close to 75 at%.

Epizootier som drabbat marina däggdjur och lett till storskaliga dödsfall har uppmärksammats runt om i världen de senaste decennierna. Höga halter av persistenta miljökontaminanter såsom DDT (diklordifenyltrikloretan) och PCB (polyklorerade bifenyler) har uppmätts hos djur som drabbats. Detta har lett till tankar om att miljökontaminanter, i den nivå de finns i våra akvatiska ekosystem idag, kan vara en bidragande orsak till den ökade mottagligheten för infektioner och den ökade mortaliteten hos marina däggdjur. I denna litteraturstudie sammanställs resultaten från försök, både på laboratoriedjur och marina däggdjur, som tyder på att kontaminanter med fokus på PCB kan orsaka immunosuppression och därmed vara en bakomliggande orsak till allvarligheten i dessa epizootier. Resultat från studier visar på att PCB kan orsaka immunosuppression genom att ge nedsatt proliferativt svar hos T-lymfocyter under stimulering med mitogener, minskad aktivitet hos NK-celler, nedsatt antikroppsproduktion, minskad antigen-specifik proliferation och minskat DTH (delayed-type hypersensitivity) svar.

Efter att ha fått en Sjöingenjörsexamen och samlat ihop alla certifikat som behövs står studenten färdig att arbeta som vakthavande maskinbefäl på fartyg. Frågor som individen ställer sig själv när han/hon står där, redo att påbörja en ny fas i sitt liv är frågor såsom: Var skulle jag vilja jobba?, När får jag ett jobb? och Hur skaffar jag mig ett jobb? Syftet med denna studie är att försöka skapa en bild av hur det har sett ut de senare åren för examinerade sjöingenjörer från Kalmar Sjöfartshögskola att komma ut på arbetsmarknaden.Metoden som användes var i form av ett frågeformulär som skickades ut till tidigare studenter som tog examen från Kalmar under åren 2009, 2010 och 2011. De gavs möjligheten att svara på en webbenkät eller att svara på en postenkät som skickades till deras folkbokföringsadresser.Studien innefattade totalt 36 personer, varav 20 personer valde att delta. Resultat från studien visar att av de 20 personer som valde att delta hittade samtliga personer arbete till sjöss.

The concentration and storage of organic chlorine and chloride were determined in soil, to a depth of 40 cm, in a coniferous forest in the Stubbetorp catchment area in south-east Sweden. Also, the spatial distribution of the two forms of chlorine was determined. Soil samples were collected at 49 of the nodes in a grid with approximately 105 m between the nodes. The analysis of spatial variability suggested that no spatial autocorrelation was present either within the variable organic chlorine or chloride. This means that no sample was more influenced by another nearby sample, as compared to other samples further away.

The company Olofsfors AB manufactures drive belts for forest machinery, known as ECO-Tracks, and abrasion-resistant steel and cutting edges for graders, excavators and tractors, known as Bruxite and SharqEdges. Manufacturing these products requires the steel to be heated and molded, then submerged in water and hardened. The water used in the hardening of steel is pumped to the process from pits below the floor and then pumped back to the pit after it?s been used. Since the temperature of this water rises after being used to harden the steel the temperature of the pumping pit needs to be adjusted to maintain its setpoint of 21°C.

Bakgrunden till studien är att vikten på den enskilda soldaten ökar allt mer vilket reducerar rörligheten. Om soldaten bär för tungt ökar risken för att verkan inte kan avges på rätt plats i rätt tid på grund av minskad rörlighet. Terrängen som amfibiesoldaten verkar i medför att stor del av striden sker till fots vilket torde betyda att rörligheten borde vara prioriterat för soldaten. Syftet med uppsatsen är att undersöka om rörlighet har varit prioriterat, för en amfibieskyttesoldat när den bedriver strid till fots, gentemot vikten på och plutonens anpassning av verkans- och skyddsutrustning. Metoden som använts är en jämförelse mellan amfibieskyttesoldatens olika utrustningsalternativ med de vikter som fastställts i författarens analysverktyg som utgår från de amerikanska doktrinerna.