Sökning: "N03-"

Hittade 3 avhandlingar innehållade ordet N03-.

  1. 1. Nitrous oxide emission from soil : On extrapolation from soil environmental factors

    Författare :Kerstin Robertson; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; N20 emission; denitrification; soil factors; soil moisture; N03-; NH4 ; regression analysis; PLS analysis; IR remote sensing; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

    Sammanfattning : Nitrous oxide(N20) is a natural component of the atmosphere which contributes both to the greenhouse effect and to the destruction of stratospheric ozone. National as well as global inventories indicate thatboth natural and anthropogenic emissions from terrestrial ecosystems constitute a large fraction of the annual loading of N20 on the atmosphere. LÄS MER

  3. 2. Structural aspects on some rare earth nitrate hydrates in the solid state

    Författare :Birgitta Eriksson; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Sällsynta jordartsmetaller;

    Sammanfattning : Structural information on different complexes is necessary for the understanding of coordination chemistry. The variety of molecular arrangements will increase with increasing coordination number of the central metal ion. LÄS MER

  4. 3. Monoterpenes from the boreal coniferous forest : their role in atmospheric chemistry

    Författare :Robert Janson; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The goal of this work has been to increase our knowledge of the role of the monoteipenes emitted by the boreal coniferous forest in atmospheric chemical processes. To this end, measurements of air concentrations and emission rates have been made in forests of Scots pine (Pinus sylvestris) and Norwegian spruce (Picea abies) at 4 sites throughout Sweden, during the summers of 1989 and 1990. LÄS MER