Sökning: "natural environment"

Visar resultat 21 - 25 av 3005 avhandlingar innehållade orden natural environment.

  1. 21. Interpretations of old wood, Figuring mid-twelfth century church architecture in west Sweden

    Författare :Kristina Linscott; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; architectural analyses; early medieval church architecture; common-tiebeam roofs; early medieval tapestry.;

    Sammanfattning : The thesis explores mid-twelfth century church architectures in west Sweden. The architectures are investigated in the light of a case, five parish churches’ naves, in particular their attics and surviving mid-twelfth century roofs. LÄS MER

  3. 22. Developing Process Design Methodology for Investment Cast Thin-Walled Structures

    Författare :Mohsin Raza; Björn Fagerström; Mark Jolly; Mälardalens högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Innovation and Design; innovation och design;

    Sammanfattning : Components for engineering systems, such as gas turbines and jet engines operating at high temperature are usually produced in superalloys. The investment casting process is most widely used for manufacturing these components due to the ability of the process to produce parts with complex geometries to close dimensional tolerances. LÄS MER

  4. 23. Extinctions in Ecological Communities : direct and indirect effects of perturbation on biodiversity

    Författare :Alva Curtsdotter; Bo Ebenman; Peter Münger; Elisa Thébault; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : In the dawning of what may become Earth’s 6th mass extinction the topic of this thesis, understanding extinction processes and what determines the magnitude of species loss, has become only too relevant. The number of known extinctions (~850) during the last centuries translates to extinction rates elevated above the background rate, matching those of previous mass extinction events. LÄS MER

  5. 24. Kinh Settlers in Viet Nam’s Northern Highlands : Natural Resources Management in a Cultural Context

    Författare :Mats Lundberg; Anders Hjort af Ornäs; Hans Holmén; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Viet Nam; northern mountains; highlands; wet rice agriculture; upland agriculture; shifting cultivation; natural resources use; local knowledge; culture; ethnicity; Naturresurser; Vietnam; etniska grupper; Water in nature and society; Vatten i natur och samhälle;

    Sammanfattning : This study deals with the Kinh (or Viet) majority people who have migrated from the lowland Red River Delta to the mountainous areas of northern Viet Nam, and their adjustment to a new social and physical environment. Its aim is to analyse the social and cultural consequences for these migrants when settling in communities populated with people who belong to the national ethnic minorities (the Tày, the Giay and the Ngan peoples). LÄS MER

  7. 25. Persistent Organic Pollutants and the Environment : A Chemometric Approach to the Study of Halogenated Aromatics

    Författare :Tomas Öberg; Bo Bergbäck; Bo Wiman; Jaakko Paasivirta; Högskolan i Kalmar; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Environmental chemistry; Miljökemi; Environmental Chemistry; Miljökemi;

    Sammanfattning : Concern is growing about the environmental and health effects of persistent organic pollutants (POPs), many of which are halogenated aromatic compunds. The research reported in this thesis focuses on factors determining their behaviour and release into the environment. LÄS MER