Sökning: "oak"
Visar resultat 1 - 5 av 71 avhandlingar innehållade ordet oak.
1. Structure and properties of Vasa oak
Sammanfattning : The Vasa ship is not adequately supported. Measurements of the hull show that the ship deforms and rotate towards the port side. In addition, damages on the hull at support areas have been observed. The damages are due to high compressive loads. LÄS MER
2. Colour Response in Drying of Nordic Hardwoods
Sammanfattning : Colour and appearance of hardwood are of great importance for the interiorand furniture industry. The widespread use of transparent surface treatmentand a fashion that prescribe light colour on many species, means that deviationfrom the ideal have considerable impact on the industrial operations. LÄS MER
3. Metapopulation ecology of Osmoderma eremita - dispersal, habitat quality and habitat history
Sammanfattning : This thesis starts with a review of different biodiversity assessment methods in forests and the rest deals with the metapopulation ecology of Osmoderma eremita, a threatened beetle living in hollow trees. I concentrate on the effect of dispersal, habitat quality and habitat history for the presence, population size and future survival of this species. LÄS MER
4. Deterioration of recent oak by iron compound : a comparison with Vasa oak
Sammanfattning : Wood degradation in the historical warship Vasa has been studied systematically regarding the chemical and physical properties. The presence of iron(II) seems to be one important factor for the degradation of the wood, causing reduction of its tensile strength. This is unfortunately a serious problem as iron(II) compounds are abundant in Vasa wood. LÄS MER
5. Promoting natural regeneration of oak by manipulating disturbance
Sammanfattning : Oak regeneration is thought to be promoted by natural disturbance and past management practices that create semi-open conditions, such as periodic livestock grazing and lowintensity fire. The overall goal of this thesis was to examine whether disturbance factors can promote natural oak regeneration. LÄS MER