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Solar radiation effects on decomposition and decomposers of plant litter in lakes

This thesis summarizes the results of a series of experiments, from test tube up to field study scale, performed to increase the understanding of solar radiation effects on decomposition and microbial decomposers of plant litter in stagnant water of littoral zones. In conclusion, I suggest that fungi play a significant role in the decomposition of plant litter submersed in lakes, and that their d

Familial factors in anorexia nervosa: a community-based study

A group of 51 cases with teenage anorexia nervosa (AN; including a total population of cases from one birth cohort) were compared with a sex-, age-, and school-matched group of 51 cases on familial factors. The subjects were examined at age 16 and 21 years. In the first study, mothers of both groups were interviewed regarding physical and psychiatric disorders among first-degree relatives. In the

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

Starka belägg för att proffsboxning leder till kroniska hjärnskador. Ju fler slag mot huvudet under en boxares karriär, desto större är risken

The clinical symptomatology and pathogenic mechanisms of chronic traumatic brain injury associated with boxing (CTBI-B) is reviewed. This syndrome is also known as punch drunk syndrome or dementia pugilistica. Since even milder forms of CTBI-B are rare among amateur boxers, we make a distinction between amateur and professional boxing throughout the review. Focus is also set on the interesting sim