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En litteraturöversikt
Background Adolescents and adults suffering from needle phobia have an unreasonable fear of needles that leads to negative experiences if they do not get the support they need. Negative experiences lead to patients avoiding health care, or these experiences affect important …
This study has analyzed particel size distribution and needle content in chipped logging residuals (branches and tops) delivered to the district heating plant Ryaverket in city of Borås, Sweden. Two fuel assortments has been analyzed: Chipped logging residuals from pure softwood …
… a moisture gradient in a 40- year spruce stand. Stemwood, bark, branches and needles were analysed for 25 different elements. Most elements did not show any significant variation with the site moisture but there were some important exceptions. The concentration of Cd in needles …
… assortments and the whole tree assortment also contained branches, tops and needles. A three-dimensional Central Composite Face (CCF) design was setup to study the effects of the three factors on the four responses. The effects of storage time on extractive contents, ash …
Skogen är en förnyelsebar energikälla som möjliggör för ett minskat beroende av fossila bränslen. Ur ett politiskt perspektiv minskar såväl klimatpåverkan som beroendet av importerad energi från oroliga delar av världen genom att ta tillvara skogsbränsle lokalt. I Sverige är …
… the objects, ICP/MS-DRC was used to obtain content of boron in spruce and pine needles, pH was determined and density on the objects were determined by fixed volume cylinder sampling. 13 objects were investigated in this study and two of these were control objects where no …
biobränslets och askans innehåll av tungmetaller relaterat till markernas geokemi
… the heatand power plant in Östersund. The material was dried and sorted into needle fractions and branch fractions. The material was then milled. Analyses of As, Cr, Pb, Hg, Ni, Cu, Cd and Zn were carried out by ICPMS. The results show that needles from Jämtland contain more …
… fraction and 10-40 times higher in the remaining fractions (bark, branches and needles). The chloride concentration showed no relation to the amount of deposited chloride. Instead there was a correlation between concentration and amount of precipitation, measured as throughfall …
… structure by polarization microscope when the shape of the composites were needle-like homogeneously and independent each other. From the results from SEM, they were aligned longitudinally at both ends of the film and laterally at the upper middle part of the films. It is …
