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Life of Excitons in Artificial Photosynthetic Antennas

Popular Abstract in Swedish På grund av den förutspådda energi krisen som föranleds av att oljan tar slut, är det viktigt att söka efter alternativa energikällor. Att utnyttja solljuset via en artificiell fotosyntes är en intressant möjlighet. Det långsiktiga målet för forskning på detta område är att bygga molekylära och/eller fasta material som kan använda solljus för att dela vatten i dess bestDue to the predicted energy crisis when fossil fuels will be exhausted it is important to search for alternative energy sources. Utilizing sunlight via artificial photosynthesis is an interesting possibility. The long-term goal for research in this area is to design and build molecular and/or solid state systems that can use sunlight to split water and produce fuel (e.g. hydrogen). Nature tells us

Removal of endocrine-disrupting compounds from wastewater using molecular imprinting

Endocrine-disrupting compounds (EDCs) such as hormones and certain pharmaceuticals (i.e. birth control pills, oestrogen replacement products and other steroids) can interfere with the regulatory systems of humans and wildlife. Many of these compounds are excreted by humans and released with sewage. Pesticides and various industrial chemicals such as dioxin and PCBs are also EDCs that often find th

Constructing large proposition databases

With the advent of massive online encyclopedic corpora such as Wikipedia, it has become possible to apply a systematic analysis to a wide range of documents covering a significant part of human knowledge. Using semantic parsers, it has become possible to extract such knowledge in the form of propositions (predicate―argument structures) and build large proposition databases from these documents. Th

Fuktreglering av regenerativ värmeväxling med värmning av uteluft eller frånluft

Syftet med denna arbetsrapport är att komplementera tidigare arbete om fuktöverföring vid regenerativ värmeväxling med en ren metallrotor genom att undersöka hur fuktreglering kan ske med förvärmning av uteluft eller förvärmning av frånluft. Följande fyra arbetsrapporter beskiver en beräkningsmodell för en rotor och olika former av fuktreglering. - TVIT—10/7048 Fuktöverföring vid regenerativ

Textens ansikte i seklernas spegel : om litterära texter och typografisk form : anförande vid Svenska Vitterhetssamfundets årsmöte den 27 maj 1998

A materialized text shows many faces in the mirror of time. In every printing, how ordinary it may seem, the graphic structure given carries meaning over and below the linguistic. Examples from different editions of the Bible and of Swedish literature demonstrate how the face of a text has been adapted to changing reading habits and literary taste. Scholarly text editors though have generally disr

Dynamics of Picture Viewing and Picture Description.

In his book Visual thinking, Arnheim (1969) writes: ... cognitive operations called thinking are not the privilege of mental processes above and beyond perception but the essential ingredients of perception itself. I am referring to such operations as active exploration, selection, grasping of essentials, simplification, abstraction, analysis and synthesis, completion, correction, comparison, prob

Historical Archaeology in Sweden : from the Middle Ages to Modernity

The article outlines the origin and later transformation of Medieval Archaeology to Historical Archaeology, both as an antiquarian practice and as an academic subject, focusing on the development in Sweden since the 18th C. Where the concept of the Middle Ages defined the former subject, both its opportunities and its limitations, now Modernity has turned up as a new challenging concept. Archaeolo

Nitric Oxide Synthase in Pancreatic Islets During Trauma and Parenteral Feeding

Popular Abstract in Swedish Den första beskrivningen av diabetes mellitus gjordes redan 1500 före Kristus när en faraos läkare noterade att myror samlade sig omkring urin från vissa människor men inte andras. På 1700-talet beskrevs för första gången närvaron av större mängder socker i såväl blod som urin hos diabetiska patienter. På 1920-talet upptäcktes insulin i bukspottkörteln (pancreas) och saThe influence of trauma (acute pancreatitis) or total parenteral nutrition (TPN) on pancreatic islet hormone secretion in relation to islet expression of inducible nitric oxide synthase (iNOS) was investigated. Acute pancreatitis resulted in an impaired glucose-stimulated insulin secretion (GSIS) which was found to be parallelled by a marked expression of iNOS and an exaggerated NO production in t