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In order to make the hydrogen economy fully sustainable, renewable resources have to be employed for its production. Simulation models, developed with Aspen Plus to calculate mass and energy balances, will be used to integrate the process steps necessary to produce pure hydrogen from biomass in a 2-stage fermentation process. The main challenge is the reduction of water and heat demand connected t
Syria, as well as many other countries in the Middle East, faces serious water shortage problems. Available water per capita (AWPC) will dramatically decrease due to climate change, population increase, and water needed for economic growth. Rainwater harvesting can play an important role in increasing available water in Syria. However, the absence of rainwater sewer systems in many rural areas in
Segregation är ett föränderligt tillstånd som är komplext och påverkar såväl enskilda individer som samhället i stort. Exempelvis är stadsplaneringen en bakomliggande orsak som kan påverkar segregationen i en stad. För att det verkligen ska kunna ske en förbättring är det emellertid av stor vikt att åtgärder vidtas på olika plan och av olika aktörer. Det ursprungliga syftet bakom arbete är att utSegregation is a changing condition that is complex and affects individuals but also the society. Urban planning is for example an underlying cause that can affect segregation in a city. However, in order for an improvement, it is of great importance that measures are taken at different levels and by different actors. The primary purpose of the report was to study the impact that urban planning h
Exploring a prolonged life cycle of materials through an adaptive transformation Take, make and waste. Our society is trapped in a linear economic system where we extract raw materials, process them into products and as they have served their purpose they are reduced to waste. This unsustainable mentality seeps through to all things consumable, from fashion and cellphones to kitchen counters and
The provision of military and armed security services typically is the monopoly domain of the state. With the end of the Cold War legitimate private firms, however, expanded as worldwide providers of military and security services. The proliferation of private military companies echoes back to pre-modern eras when it was customary for state rulers to allocate force and security through the market.
The formation of ESDP (European Security and Defense Policy) is one of the most important building blocks shaping the European security structure and the European integration process since the beginning of the 21st century. Even though the integration engine was injured by the rejection of the European Constitutional Treaty in France and the Netherlands, the ESDP can be seen as currently one of th
Svensson (1997) föreslår att centralbanker på grund av implementerings- och utvärderingssvårigheter hos inflationsmål även bör ha ett mål för inflationsprognoser. Han argumenterar för detta med hjälp av en teoretisk modell som antar att den korta räntan, som centralbanken kontrollerar, påverkar BNP-gapet med en periods fördröjning, vilket sedan påverkar inflationen efter ännu en period. För att ma
Designs for Extremely Large Telescopes (ELTs) are quite well advanced,but the requirements of instruments have had limited impact. Sinceprovision of a suitable environment for instruments is a critical aspectof all telescopes, we outline some well-known and some less-appreciatedchallenges of designing instruments for ELTs. A wide-field spectrometer(WFSPEC) with ~10 arcmin field-of-view, probably w
Abstract not available
This paper investigates to what extent and how the sociological perspective of Erving Goffman is represented in Swedish sociology-textbooks and why it is represented the way it is. The investigation has been restricted to central Swedish textbooks during the period 1970-2000 and consequently it does not give a complete picture, but since the choice of textbooks reflects central currents and person
