The continuous process of urbanization results in demands on research and development for ecological and sustainable city development. Because of this, the current systems for wastewater treatment may have to be improved. In order to evaluate new technologies for municipal wastewater treatment, a development project has been initiated for the new district Hammarby Sjöstad in Stockholm. The project is lead by the company Stockholm Water. High environmental standards have been put up for the district, as it must be twice as good as an ordinary new district.

Reverse logistics is getting more and more attention both from companies and the public. It is an area with the possibility for companies to do good in the eyes of the public. This work focus on the return system of a one-way handling material called the loading ledge. The loading ledge is developed by IKEA as a substitute for the EUR-pallet in transports from suppliers with a long distance and even flow and in transports from suppliers with short distance and uneven flow. The loading ledge is made out of 100 % recyclable plastic.The purpose of this work is to find the most efficient set-up for recycling of loading ledges within IKEA on a European level from a transport and handling point of view considering aspects like cost, environment, time and, from an administrative point of view, user-friendliness.Who will the participants of the set-up be, where will they be located, which transports are needed and which income and costs does the set-up generate, are questions that will be answered.

En marknadsundersökning av förekommande metoder för digitalisering av karosseridetaljer. Olika skannertyper analyserades och en rekommendation av lämplig metod lämnades till uppdragsgivaren. Förutom punktantal beaktades även punktorintering, inskanningskostnad/tid, positioneringssystem och mätrymd. Uppdragsgivaren rekommenderades att använda en optisk skanner för projicering av fransar med ett optiskt spårningssystem. Då tillverkning skall ske i mycket små serier berördes även olika tillverkningsmetoder, som exempelvis hydroformning mot ett formverktyg av aluminium eller kompositcement.

Wastewater treatment is increasingly controlled by the Swedish environmental quality objectives, adopted by the Swedish parliament. There is a need for a sewage system that can fulfill stringent requirements concerning the environment, recycling and resource use and hygiene. Additional environmental aspects in recent years are the impact of climate change, new knowledge about the effects of pharmaceuticals in water, the need for improved wastewater treatment and increased recycling of nutrients to agriculture. This report has, from a future scenario of the year 2050, analyzed seven different systems for wastewater treatment and treatment of compostable biowaste from households in Eskilstuna. A future scenario was chosen based on that within a forty year period new challenges may arise which can result in higher demands on sewage treatment than those we see today. Another reason why the future scenario was established is that changes in wastewater treatment systems are slow to establish. The analysis is mainly focused on the economical aspects but environmental aspects such as emissions to receiving waters and potential recycling of plant nutrients has also been evaluated briefly.

De inblandade bolagen har olika motiv till att genomföra en RTO men affären är dock helt ömsesidig och ingen av parterna är tvingad in i processen. Den ägarspridning som sker i samband med affären för med sig både för- och nackdelar. Detta är något som bolaget måste ha klart för sig och känna sig tillfreds med. Kostnaderna och tidsåtgång vid en RTO skiljer sig inte nämnvärt jämfört med en normal börsintroduktion. Okunskap på marknaden ger tillfälle för väl insatta investerare att åtnjuta arbitragevinster i samband med processen.

De inblandade bolagen har olika motiv till att genomföra en RTO men affären är dock helt ömsesidig och ingen av parterna är tvingad in i processen. Den ägarspridning som sker i samband med affären för med sig både för- och nackdelar. Detta är något som bolaget måste ha klart för sig och känna sig tillfreds med. Kostnaderna och tidsåtgång vid en RTO skiljer sig inte nämnvärt jämfört med en normal börsintroduktion. Okunskap på marknaden ger tillfälle för väl insatta investerare att åtnjuta arbitragevinster i samband med processen.

Denna rapport undersöker krav, tagna från ett ramverk för evaluering av CASE-verktyg i ett kontextuellt sammanhang, i två representativa CASE-verktyg. Ramverket utnyttjar en modell som föreslagits av Lundell och Lings för att extrahera både krav och förväntningar som en organisation (www.it.volvo.com) hade på vad ett CASE-verktyg är och kan utföra.Ramverket extraherar krav i ett organisationell kontext, dvs. utvärderingen utfördes innan verktyget som evaluerades användes i organisationen. Detta indikerar på att kraven inte är knutna till ett specifikt verktyg, samt att CASE-verktyg inte säkert stödjer dessa krav.Resultatet för denna rapport är att viss semantisk förlust uppstod vid transformering av kod och modeller..

The non-linear film - a film telling a story using a reversed or scrambled chronology - has existed since the late 20?s, but just recently gained huge influence and popularity due to films such as Quentin Tarantinos cult-declared Pulp Fiction. In this essay I will analyze this form of narrative, and more specifically; how it?s used in my example film Memento. In my examination, I have seen the original version of the film, and then a re-cut version where the story is ?turned over? to form a ?normal?, linear narrative.

Nanofiltration is a proper way of preparation of drinking water. The process has a lot in common with reverse osmosis where a semipermeable membrane is used to separate a pure water flow from the remaining water. A pilot plant was used to ensure that nanofiltration is a suitable technology for a specific waterworks station in Glemmingebro, Ystad. The purpose was also to find out if a pH-adjustment is needed for feed water in a possible full scale plant.  In this case nanofiltration is used mainly to remove sulphate and calcium since the raw water contains concentrations of these substances which exceed the limits for potable water. It is important to receive a high recovery (RC), otherwise the deliviery of water won?t be high enough.

The purpose of this study is to examine senior high school students? strategies and reasoning when solving mathematical problems and make a review of the concept problem solving. The purpose is also to examine if the students? choice of strategies are influenced when their mathematical knowledge is improved.The study was conducted in two science classes at a senior high school. All the students were asked to individually solve two mathematical problems.

Abstract:In previous experiments with the bacterium Ideonella dechloratans a probable sequencecoding for a cytochrome c protein (cyt c) was observed, the sequence is assumed to have afunction in the bacterial respiratory chain. Detection attempts have been made to try to findthis protein, but have not succeeded. The purpose of this project is to detect the expressionof mRNA associated with the cytochrome c. And if it is detected, it will also be investigated ifthere is any difference in expression of the mRNA due to aerobic or anaerobic environment.Total RNA was purified from cultures grown under aerobic and anaerobic conditions. cDNAwas then synthesized using reverse transcriptase and subsequently amplified with thespecific primers in a qRT-PCR.qRT-PCR testing showed a distinct amplification of primer product, confirming that I.dechloratans expresses mRNA coding for the cyt c protein.

Med ett ökat antal multinationella företag med anställda från hela världen ökar också antalet barn som under sin uppväxt flyttar runt i olika länder, third culture kids. Uppsatsen syftar till och vill belysa hur det kan vara att växa upp i flera olika länder och hur man ser på sin egen kulturella identitetsutveckling. Identitetsutveckling är något alla går igenom. Forskning visar att om man under uppväxten ofta byter kulturellt sammanhang kan det en extra utmaning speciellt när det gäller att utveckla sin kulturella identitet.Fyra personer intervjuades om deras uppväxt och upplevelser som TKC.  Uppsatsen presenterar deras berättelser och tillsammans med tidigare forskning syftar de till att ge en bild av hur det kan vara att växa upp i främmande kulturer men också hur den kulturella identiteten ifrågasätts när man som ung vuxen återvänder till sitt passland.

This report analyzes disposable packaging and returnable packaging with the methods life cycle analysis and life cycle costs analysis. These two different packaging are analyzed through the company Clas Ohlson?s packaging-flow. To get a picture of how the flow works, a visit at the company and email contact have been done with Clas Ohlson to get relevant informationToday Clas Ohlson has a big flow of articles to the stores without larger variations in the demand, with the exception of autumn, which is when customers start shopping for Christmas. Clas Ohlson?s articles are placed on a pallet and are wrapped into plastic-film for protection and to make sure that nothing will be stolen.

SecRePac is a household appliance that simplifies sorting of packaging such as milk, juice and yogurt containers. By shredding the packages SecRePac reduces its volume uptake both in the home and at the recycling station. This leads to minimization of both transports to the recycling stations and truck transport for emptying the containers at the recycling station.The greenhouse effect deteriorates and becomes worse and worse leading to extreme climate changes and natural disasters such as floods as an example. Carbon dioxide emissions are the major reason for this and at least 30 percent of all these emissions come directly from transports. In the EU carbon emissions has decreased in the past few years.

Nanofiltration is a proper way of preparation of drinking water. The process has a lot in common with reverse osmosis where a semipermeable membrane is used to separate a pure water flow from the remaining water. A pilot plant was used to ensure that nanofiltration is a suitable technology for a specific waterworks station in Glemmingebro, Ystad. The purpose was also to find out if a pH-adjustment is needed for feed water in a possible full scale plant.  In this case nanofiltration is used mainly to remove sulphate and calcium since the raw water contains concentrations of these substances which exceed the limits for potable water. It is important to receive a high recovery (RC), otherwise the deliviery of water won?t be high enough.