Sökning: "stumps"

Visar resultat 36 - 40 av 103 uppsatser innehållade ordet stumps.

  1. 36. Artificial gap creation and the saproxylic beetle community : the effect of substrate properties on abundance and species richness

    Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

    Författare :Nils Bodin; [2016]
    Nyckelord :boreal forest; nature conservation; saproxylic beetle; artificial gap creation; restoration measure; coarse woody debris;

    Sammanfattning : Coarse dead wood (CWD) and gaps are structures that have become sparse in Swedish forests as a result of forestry. This is believed to be one factor contributing to diminishing biodiversity. Because of political undertakings to preserve biodiversity, Swedish agencies and forestry companies now aim to restore these and other structures. LÄS MER

  3. 37. Topology optimization process for new designs of reconstruction plates used for bridging large mandibular defects

    Master-uppsats, Linköpings universitet/Institutionen för medicinsk teknik

    Författare :Linn Lemón; [2016]
    Nyckelord :Topology optimization; Reconstruction plate; Mandibular defect; Clenching task; Design; SimLab; HyperMesh; OptiStruct;

    Sammanfattning : Loss of bone in the mandible as a result from for example resection of bone tumors or trauma, can in more complex cases be reconstructed using a reconstruction plate to provide stability between the remaining mandible stumps. Different studies on reconstruction plates present a fracture rate of 2.8-9.8 %. LÄS MER

  4. 38. Lönsamhet vid motormanuellt förarbete i stormfälld skog

    Kandidat-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Anders Olofsson-Johansson; Jesper Pettersson; [2015]
    Nyckelord :stormfälld skog; rotkapning; inventering; stubbhöjder;

    Sammanfattning : Syftet med studien var att undersöka skillnaden i kvarlämnad virkesvolym på stormfällda avverkningstrakter mellan att utföra motormanuell rotkapning före skördarens arbete eller inte. Syftet var också att analysera ekonomiska skillnader. Studien genomfördes i Jämtland efter stormen Ivar. LÄS MER

  5. 39. The impact of stumps’ height on secondary spread of Heterobasidion parviporum in precommercial thinning stands of Norway spruce (Picea abies)

    Master-uppsats, SLU/Southern Swedish Forest Research Centre

    Författare :Iwona Urban; [2015]
    Nyckelord :Norway spruce; Heterobasidion parviporum; precommercial thinning; wysokość pnia; świerk pospolity; czyszczenia późne;

    Sammanfattning : The economic losses caused by Heterobasidion spp. infection is an important issue in the Swedish forestry sector where Scots pine and Norway spruce make up to 80% of the standing volume. Both of the fungi species naturally existing in Sweden: H. annosum and H. LÄS MER

  7. 40. The effect of stump extraction on the diversity of saproxylic insects in the roots of Norway spruce (Picea abies) stumps

    Magister-uppsats, SLU/Dept. of Ecology

    Författare :Markus Juuso; [2015]
    Nyckelord :tree stump extraction; Norway spruce; Picea abies; roots; Sweden; saproxylic insects; biodiversity; ecological trap; saproxylic beetles; effect of stump extraction; stump extraction piles; biofuel; stumps;

    Sammanfattning : This study examined the effect of tree stump extraction on the diversity of saproxylic insects in Norway spruce Picea abies roots. I tested if the density of saproxylic beetles was the same in the interior layer of the stump storage piles as in the exterior layer. LÄS MER