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Under en genomfattande renovering av en befintlig fortsättningskurs i hållfasthetslära har en ny examinationmetod utarbetats. Syftet med såväl hela omarbetningen av kursen som den nya examinationsmetoden, har varit att öka studenternas förmåga att göra snabba överslagsberäkningar. Studenterna delas in i grupper och varje grupp utgör en styrelse som skall ta ställning till ett designförslag. Den sn
As the global economy seeks to recover from the financial crisis and warnings about the consequences of climate change abound, it is clear that we need a fundamentally new approach to tackle these issues. This innovative book offers a unique perspective, stressing the necessity of both ecological and social change as it discusses how to create a "red-green" or "eco-socialist" society. Examining t
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The aim of the study is to develop an integrative theoretical model of fictional narrative. The make-believe theory of Kendall L. Walton, which explains fiction as a family resemblance of all representational arts, is adopted in order to explain the fictionality of fictional narrative. In the first part of the study, Kendall Walton’s make-believe theory is critically examined. In part two, major i
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Popular Abstract in Swedish Atmosfäriskt nedfall är den största källan till miljögiftet PCB i sötvatten. I flertalet vattendrag, exempelvis Emån, fungererar också sediment som en källa. Ett pappersbruk i anslutning till Emån hade använt returpapper som innehöll PCB som råvara. PCB följde med utsläppen till ån och lagrades in i sedimenten. Miljögiftet läckte sedan ut långsamt till vattnet. Största Atmospheric deposition is one source of persistent pollutants such as polychlorinated biphenyls (PCB) in aquatic environments. Other point sources can also contribute to the PCB loadings in the water. In the Emån River, in southeast Sweden, contaminated sediment was a source of PCB, the largest deposits of it being found in a small lake connected with the river, Lake Järnsjön, the sediment of it c
The properties of particle-induced X-ray emission, PIXE, and secondary target mode X-ray fluorescence, XRF, applied to the analysis of unprepared drill cores in open air have been evaluated. Typical detection limits for elements heavier than Mg have been determined for a PIXE-system with an external 2.55 MeV proton beam and for an XRF-system with Ti, Mo and Tb secondary targets. These two systems
Popular Abstract in English The energy demands of human society are huge and will keep increasing for the foreseeable future. Fossil fuels have largely been able to meet those demands for the last centuries, but issues of sustainability and global warming have brought about a need for alternative energy sources. The emission of the sun supplies earth with an energy that is many thousand times largOrganic solar cells employing fullerenes blended with conjugated polymers as the main light-absorbing material have achieved power conversion efficiencies exceeding 10%. They hold promise as an alternative energy source with many advantages in terms of long-term sustainability and reduced greenhouse gas emissions. Detailed information on the electronic and geometric structure of the molecules invo
In magnetomotive ultrasound (MMUS) imaging superparamagnetic iron oxide nanoparticles (NP) are used as contrast agents and a time-varying external magnetic field acts to move the particles and thereby the nanoparticle-laden tissue. Recently we proposed a frequency and phase sensitive algorithm to reduce motion artifacts. However, the method is not quantitative as the particle movement induced is d
