92 uppsatser · sida 1 av 7
The sludgebark and to a certain extent the bark were until a decade ago waste products without any economic value that were thrown away. A number of environmental laws and increcing energy prices have improved the prerequisites for increasing the use of these materials. At …
en utvärdering
… utvärdera anläggning, kostnad och funktion av två markstabiliserande material, bark och armeringsmatta, under två säsonger. Syftet med detta examensarbete var att utvärdera resultatet under första betessäsongen. Bark och armeringsmattor anlades på ytor av ca 6 x 6 m i grindhål …
skogshistoria och markutnyttjande i Vuornavagge under 300 år
… the area long before 1500 A.D. Sami people peeled pine trees to use the inner bark as food and for storage of reindeer sinews, and the resultant Smi bark peelings can still be found in the forest. The first Swedish settlers in Ammarnäs arrived at the beginning of the 19th …
the importance of landscape structure and forage availability
Bark-stripping by red deer (Cervus elaphus) cause extensive damage to economically valuable spruce trees (Picea abies) in Swedish forests. The underlying causes for bark-stripping are not fully understood, and the frequency and severity of damage unpredictably differ between …
… dränera och ta bort matjorden och lägga dit ett markstabiliserande material. Bark som markstabiliserande material har i tidigare studier visat sig vara bra om barken är ordentligt packad. Armeringsmatta är ett material som består av ett kraftigt plastnät och som är starkt och …
… the technical and economical possibilities for a fuel conversion to ether bark powder, wood shavings or wood powder have been investigated. These fuels should be burned in one of the following applications: TPS BioSwirl, VTS Multifuel burner or Saxlunds bio fuel combustion plant …
… of the species and to see what affects the density of beetles in a tree. The bark of some trees and wood from the breeding project at Nordens Ark has also been studied to find out what affects the species reproductive success. The reproductive success was measured in two ways …
en utredning om utsläpp av fenolföreningar samt metallsorption
… and the need to find new filter materials is substantial. Studies of pine bark have shown that this is a material that may be used as an alternative to conventional filter materials, such as activated carbon. However, the study of pine bark has shown that a leakage of phenolic …
Bark-stripping by red deer (Cervus elaphus) cause extensive damage to economically valuable spruce trees (Picea abies) in Swedish forests. The underlying causes for bark-stripping are not fully understood, and the frequency and severity of damage unpredictably differ between …
… veterinären ska bland annat göra en subjektiv bedömning av förhållandet mellan bark och märg. Syftet med denna studie var att upprätta normal- och referensvärden för volymmässigt förhållande mellan bark och märg hos friska katter då detta saknas. Tre snitt (sagittal-, dorsal- …
The spruce bark beetle (Ips typographhus) is one of the 25 000 species of insects in Sweden, an insect of great economic importance because it can alone terminate forest of high value. During the past decade, insights of climate change received with increasing attention. If the …
Uppgiften bestod av att göra en undersökning av barkhanteringen vid Billerud Karlsborg AB med avseende på ekonomi och barkens torrhalt. Undersökningen omfattar allt från stock till förbränning och eventuell försäljning av barken. Tidigare så förbrukades all bark i barkpannan …
… char was noted within the 10 cm strip. Also the uppermost height of the cork bark, the height of the tree, circumference, and scorch height (lowermost living needles in the crown) was recorded. A total of 12 unburned control trees were examined in adjacent stands. In many cases …
Studies have shown that air pollution, as well as bark fissure depth and sun exposure of a tree can have an effect on lichen growth as well as abundance of lichen species. The aim of this study was to find out the relative importance of these factors. 211 oaks in south eastern …
… consumption (A) for the assortments stemwood and whole tree of lodgepole pine. Bark was included in both 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 …
