The Homogeneous Charge Compression Ignition (HCCI) engine is promising in terms of lowNOx, low particulates and high efficiency. Due to its homogeneous charge, where thecombustion starts almost simultaneously from a number of points in the combustion chamber,only lean mixtures are possible to burn because of the resulting rapid combustion, which is muchfaster than the combustion in an SI-engine or a diesel engine. When richer mixtures are used thecombustion will start earlier and also be more violent.To phase the combustion later and lower the combustion speed, external cooled EGR can beused. The EGR-system used in this thesis uses a divided exhaust channel where one channel andits corresponding valve are used only for transporting EGR back to the intake system.Consequently the EGR-valve is connected to the intake pressure. This system is called Direct-EGR (D-EGR).Engine tests verified that the CA50 indeed is phased later when cooled EGR is used.

The four grocery chains Axfood, Bergendahls, Coop and ICA, all providing private labels, dominate the Swedish grocery market. Through private labels, it may be possible to convey an image about the grocery chain's overall brand. Furthermore, it is important that the grocery chain's employees have a fairly consistent understanding regarding the company's image to achieve success.The main purpose of this study is to examine how the intended image the Swedish grocery chains head offices will communicate through private labels is perceived among the store employees. The study intends to provide an expanded view among the grocery chains' work on internal communications regarding the image of private labels. The research method is qualitative.

At the plant of Sandvik do Brasil in São Paulo there is a need for improving the transport of inserts between the plant building and the stock building. The idea is to install a system with an Automated Guided Vehicle (AGV) to take care of this transportation. The purpose of this report is to present which demands there are on the system and to find the best solution according to the demands.To conclude this work a study was made of the plant and the AGV technology was examined. Several providers of AGV solutions were contacted to get information about prices and detailed solutions.The conclusion was that the most suitable system for this application is a small unit load vehicle using inductive wire as guiding system..

Detta arbete var beställt av Sjöfartshögskolan i Kalmar. Skolan ville ha en enhet som kunde mäta aktiv-, reaktiv- och skenbar effekt, ström, spänning, frekvens och cos? på en generator och som kommunicerade vidare dessa värden till en PLC. Detta för att kunna lastfördela lasten mellan ett antal generatorer i kursen Tillämpad elteknik 15 hp där studenterna bygger en generatorinstallation med tre generatorer. Ett funktionsblock för lastfördelning skulle också programmeras.

Detecting small signals with a comparator demands that the total voltage offset is lower than the actual signal. The total offset includes the voltage offset in the comparator and the voltage offset that is created by the offset currents that flows thru the load at the comparators input. The goal with this comparator that has been developed has been that it will have a total voltage offset at maximum 500 uV. The comparator does not need to be extremely fast or does not need to operate in a big frequency area. To have all the flexibility that is needed a full custom technique is used.

The last decades have shown increased nitrogen leeching from soil to water recipients. This is inSweden mainly due to over-manuring of agriculture land, effectivization of drainage systems and thedeclining extent of wetlands. The accumulated amount of nitrogen in water doesn?t only make itunsuitable for use by humans and cattle, but also decreases the biological diversity as well as negativelyaffect tourism and fish industry. In the most severe cases shallow maritime grounds can be completelydepleted of oxygen due to decomposition of the increased amount algae and plankton growth.This study have the aim to describe and quantify the nitrogen leeching from the Genevad drainagebasin, located in southern Halland, Sweden.

The purpose of this study was to investigate the relationship between Health Locus of Control, Exercise habits, Food habits and Self-esteem (Personal self and Physical self) between two groups of student teachers at a university in the south of Sweden. Is health such as exercise, eating and self-esteem something that is controlled by internal or external factors? Student teachers that participated in Physical and Health programme and student teachers that participeted in other programme were investigeted. The participants (N = 160) answered the questionnaire. The Health Locus of Control scale and Tennessee Self-Concept Scale were used.

Old hollow trees of oak contain a large amount of wood mould. Unfortunately, these trees have in the last century been greatly reduced in numbers. It has resulted in that species that depend on these habitats, saproxylic species, have become at risk to decrease in numbers or die out regionally. Previous studies have shown that the volume of wood mould is an important factor for occurrence and population size of saproxylic organisms. The aim of the present study was to examine how the volume of wood mould varies among ash (Fraxinus excelsior), lime (Tilia sp.), maple (Acer platanoides), aspen (Populus tremula) and oak (Quercus robur).

In conventional viscose manufacturing, a large amount of carbondisulfide is consumed. This amount has to be decreased to keep the production cost down and to reduce the environmental impact. The purpose with this work was to show if an enzyme treatment of a dissolving pulp could increase the degree of substitution in the viscose so that the amount of carbon disulfide consumed in the process could be decreased. Previous investigations by Kvarnlöf (2007), Engström et.al. (2006) and Henriksson et.al.

Undersökningen ämnade se vilka fördelar och nackdelar som finns med animerade instruktioner jämfört med bildinstruktioner. För att göra detta så fick ett antal personer testa att vika origami med hjälp av antingen bildinstruktioner eller animerade instruktioner. Resultatet baserades på aspekterna tid, resultat samt utveckling. Undersökningen visade att animerade instruktioner hade mycket högre läsbarhet än bildinstruktioner men att det var svårt att se huruvida personer blev bättre på att vika origami..

The short term effect of phosphorus in sewage sludge was investigated to establish howmuch of this a farmer can grant him- or herself, if using sewage sludge as a phosphorusfertilizer. Possible differences in plant availability between sludge phosphorus precipitatedby iron, aluminum or calcium integrations were studied in a sandy soil at two pH levels.The sludges were analyzed using pot and incubation trials. As the intention was to investigategrowth limitation due to phosphorus deficiency, a soil with low phosphorus supplywas chosen as well as a low phosphorus application rate. Sludge corresponding to 12kg phosphorus per hectare was applied. Treatments fertilized by sludge were compared totreatments where 0, 6 and 12 kg phosphorus per hectare from mineral fertilizer was applied.Every treatment was replicated six times.

The purpose of this study is to investigate the Swedish Public Relations and Communication profession from the Stockholm Accords point of view. The Stockholm Accords are an attempt to reflect Public Relations and Communication Management practice as it stands today and to provide a global common ground for the practitioners.The method used for this study is a quantitative research method conducted by a web survey answered by more than 400 Swedish communication managers. The questions posed were examining these managers view of their profession compared to the Stockholm Accords.The research shows that the Swedish way of implementing communication in the organization broadly corresponds to the Stockholm Accords when it comes to internal and external communication. However, there are some areas where Swedish communication practice diverges from Stockholm Accords. The issues which link governance, management and sustainability to communication have a much wider distribution of responses.

This examination work is about implementation of Cisco Systems Network Admission Control (NAC) within a leading IT-company in region of Jönköping. NAC is a technique that is used for securing the internal network from the inside. NAC can verify that the client who connects to the network has the latest antivirus updates and latest operative system hotfixes. Clients who don?t meet the criteria can be placed in quarantine VLAN where they only have access to the update servers.

Aim and question at issue: The aim of this study is to compare the motivation to participate in the course Idrott och hälsa A between students studying vocational and further education preparatory programs at upper secondary school.What level of motivation do the students of the two programs have towards participation in the course Idrott och hälsa A.What kind of motivational factors are important for students in the two programs concerning participation in the course Idrott och hälsa A According to the students of the two programs, what type of motivational factors would increase the motivation to participate in the course Idrott och hälsa A. Method: A quantitative study has been carried out using a questionnaire. Thirteen randomly chosen upper secondary school classes were included in the county of Stockholm, 7 of them in the vocational program and 6 of them in the further education preparatory program. The questionnaire was filled out by 278 students, 120 in the vocational program and 158 in the higher education preparatory program. The response frequency for the study was 92 %.Results: The results of this study show that the majority (77%) of all students in the population are highly motivated to participate in the course Idrott och hälsa A.

Vaccinology is an ever expanding field. As a member of the veterinary staff it is important to stay up to date with the continuous new scientific data and recommendations that affect the care that our companion animals receive at the veterinary clinic. This paper presents adverse vaccination reactions, their cause, risk factors and suggestions how we can minimize the risk of adverse vaccine events in dogs. Dog owners in Sweden were allowed to answer a questionnaire about adverse events following vaccination. Lethargy, edema and pruritus were among the most frequently seen adverse effects.