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With the increased availability of computational resources, the past decade has seen a rise in the use of computational fluid dynamics (CFD) for medical applications. There has been an increase in the application of CFD to attempt to predict the rupture of intracranial aneurysms, however, while many hemodynamic parameters can be obtained from these computations, to date, no consistent methodology
Nature-based tourism in the fragile Arctic environments is emerging as a major environmental concern, mainly due to extreme seasonality in these locations, the lack of suitable infrastructures and planning, and its interference with fragile ecosystems. In Iceland tourism has increased exponentially during the past decades, causing more environmental impacts on the country's natural recourses. Hiki
Moving from a fossil dependent to a fossil free economy requires increased energy production from renewable resources. This thesis discusses the utilization of agricultural waste streams, such as straw and manure, for biogas production. The first part of the research presented focuses on pretreatment of straw with the aim to reduce the handling issues concerning straw and improve the degradation o
Environmental pollution is a significant concern for scientists, practitioners, authorities and the society. Among the various pollutants, chlorinated solvents pose a considerable risk to our groundwater resources. These hazardous chemicals, often used in industrial processes, can contaminate soil and water, posing a threat to both human health and ecosystems. Detecting and tracking the spread of
Antibiotic resistance is a major threat for our society and finding novel antibacterial therapies is of greatimportance. In this thesis, we investigate bacterial sialic acid uptake inhibitors as a novel antibacterial approach.Bacteria do not biosynthesise sialic acid and therefore harvest it from the host. Sialic acid plays a crucial role forpathogenic bacteria, since it is used as a source of car
The fact that solitary migratory birds can find their migration routes has indicated the possibility that a genetic basis may be involved in determining the route of migration. Researchers have also found evidence to investigate this hypothesis in various ways. The focal species of this study is the willow warbler (Phylloscopus trochilus), which has three described subspecies (trochilus, acredula
Denna studie presenterar en detaljerad undersökning av utvecklingen av sedimentära landformer under en ablationssäsong vid Blåisen, en del av Hardangerjøkulen, Norge. Två besök vid Blåisen, i början och i slutet av ablationssäsongen, gjorde det möjligt att studera hur landformerna bevaras och utvecklas. Det pågår mycket forskning om glaciala landformer som är en nyckel till förståelse av hur tidigThis study presents a detailed investigation into the evolution of sedimentary landforms over an ablation season at Blåisen, an outlet of the Hardangerjøkulen Icecap, Norway. The two visits to Blåisen, one each side of the ablation season, allowed the preservation and evolution of the landforms to be studied. Much research is conducted studying glacial landforms, which are key in our understanding
The claims for the potential of boreal and sub-boreal forests to combat negative effects of climate change have been substantial with over half of Earth’s primary forests found within boreal and temperate regions of the Northern Hemisphere. Given the likely occurrence of more extreme climate events in the future, ascertaining a better understanding of how climate effects, such as profound fluctu
The processes of meltwater storage in firn and the impact of refreezing on firn-coveredglaciers have been investigated on the Greenland ice-sheet. On Svalbard, climate changepromotes the disappearance of firn on glaciers. This thesis project aims to monitor theheat exchanges between the snowpack and the ice surface on a non firn-covered glacier,on Foxfonna, Spitzbergen, Svalbard, and to draw the p
Development of environmentally friendly and cost-efficient energy sources has been a challenge for modern society since long ago. Sunlight is an infinite and costless source of energy on Earth, so it would be an enormous advantage to efficiently harvest and transform it into electrical energy used in our everyday life. In nature the process, which converts light energy into chemical energy, is cal
This report is about the housing situation in Manila, capital of the Philippines. 25% of the inhabitants in this mega city live in informal settlements, often on places unsuitable for living. The target area of this paper is Baseco, a large slum area near the outlet of Pasig River and home to 47 000 people according to the 2002 census. Among its many problems including overpopulation and poverty i
The Internet has revolutionised the global market place. Internet shopping is now accessible to an increasing numbers of people. In theory, this new form of media offers convenience, speed and choice to the consumer, but the question is whether it works in practice? Business-to-consumer cross-border transactions, whether carried out electronically or otherwise, are subject to the existing framewor
The small heat shock proteins (sHsps) are a widespread class of molecular chaperones existing in all organisms. During heat stress the sHsps protect other proteins from unfolding and aggregation. In plants the sHsps play an especially prominent part of the stress response. In this thesis chemical crosslinking and mass spectrometric mapping of crosslinked peptides has been used to investigate the
Several beneficial effects have been connected with dietary fibre. Insoluble fibre has a good faecal bulking capacity, whereas soluble and viscous dietary fibre has been shown to have beneficial effects on carbohydrate and lipid metabolism. Fruit and vegetables provide about one third of the dietary fibre intake in Northern Europe and more than half in Mediterranean countries. These food items are
I takt med den ständigt pågående tekniska utvecklingen ökar även efterfrågan av digitalisering av allt fler funktioner i samhället. Många processer, transaktioner och handlingar som tidigare skedde på plats och genom möten sker idag digitalt. Bankärenden är ett av många exempel på detta, vilket tydliggjordes i Internet Stiftelsens årliga undersökning 2019, Svenskarna och Internet, då 91% av svensk
Background/Purpose: The aperture shape controller (ASC) was introduced in the Eclipse treatment planning system to reduce plan complexity by counteracting irregular multileaf collimator (MLC) shapes. This should lead to decreased difference between the planned and measured dose distribution. The ASC was investigated to examine if it could limit plan complexity so that the planned and measured dose
Vår hud är hem för en stor grupp av mikroorganismer, hudens mikroflora, som påverkar vår hälsa och vårt välbefinnande. Ändå finns det många aspekter av detta ämne som ännu är outforskade. Detta projekt syftade till att optimera en metod för analys av hudens mikroflora och effekten av hudvårdsprodukter på hudens mikroflora, från provtagning och provberedning till analys med kvantitativ polymeraskedOur skin is home to a vast community of microorganisms, the skin micro flora, which affect our health and well-being. Yet, there are many aspects of this topic that are still unexplored. This project aimed to optimize a method for analysis of the skin micro flora and the effect of skin care products on the skin micro flora, from sampling and sample preparation to analysis with quantitative polymer
Idag byggs det oerhört mycket. Nyproducerade bostäder konstrueras samt att äldre byggnader renoveras. Då är det viktigt att inte den större fokusen ligger på den ekonomiska- och ekologiska hållbarheten, utan även på den sociala hållbarheten. Detta för att förebygga ett segregerat samhälle som vi idag ser resultat av och drivs emot. Genom gemensamma bostadsgårdsytor skapar vi nya samlingsplatser. D
Stora Enso Nymölla is a pulp and paper mill mainly producing office paper. Their most well-known product is the MultiCopy paper. Every fourth year all large companies are by law required to present an energy audit. This can be done as one large report or by presenting smaller reports during the four-year period. Nymölla Mill has decided to publish short overviewing reports every year and combining
Background The 2002 EU directive on the energy performance of buildings stipulates that buildings must be energy certified. In order to implement the directive in Sweden it is proposed that a law on the energy certification of buildings be introduced on 1 January 2006. The law shall apply to all buildings where energy is used to condition the indoor climate. However, there are a number of exceptio
