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Deformationer i träbjälklag och trägolv på grund av fuktvariationer : Uppskattning med hjälp av finita elementberäkningar

I rapporten redovisas resultaten av beräkningar med finita elementmetoden avseende deformationer i golvbjälklag och i parkettgolv på grund av fuktvariationer. Beräkningarna baseras på indata i form av den under året varierande relativa fuktigheten i omgivande luft. I rapporten ges också exempel på en förenklad handberäkningsmodell. Resultaten visar bl a att man genom reducerad ventilation och fukt

Sveriges politiska historia mellan 1100 och 1250

The article, presented within an anthology, traces the history of the kingdom of Sweden during the twelfth century and the first half of the thirteenth century, with a special focus on the Cistercian Abbey of Varnhem.

Lignin extraction from kraft black liquor by ultrafiltration

Extn. of lignin from kraft black liquor is one method of lowering the large energy surplus in pulp mills. The lignin can be used as a bio-fuel to replace fossil fuels in heat or power generation, and the lignin-depleted black liquor can be reused in the cooking operation. As kraft black liquor lignin has a fairly high mol. wt., ultrafiltration can be used to selectively fractionate lignin from coo

Soot sensors for efficient combustion and low emissions - SootSensII

Nanosized soot particles are a serious health hazard in urban air. Upon inhalation they can penetrate deep into the lungs and their fat solubility makes possible their accumulation in other organs such as the brain. For this reason legislation has continuously reduced the allowable emission levels and raised requirements for reporting the status of the exhaust system (OBD, on board diagnostics) in

The Role of F0 and Duration in Perception of Female and Male Speaker Age

Single word stimuli from twelve female and twelve male natural speakers of various ages and from two synthetic voices were acoustically analyzed for duration and F0. Listening experiments were carried out to test if spectral features or F0 and duration provide the more dominant age cues and to test if listeners are equally good at estimating the age of female and male speakers. Results of the list