Search for dissertations about: "A. Andersson"

Showing result 31 - 35 of 1617 swedish dissertations containing the words A. Andersson.

  2. 31. Trends in Childbearing and Nuptiality in Sweden : A Period Analysis

    Author : Gunnar Andersson; Kathleen Kiernan; Stockholms universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Demography; Demografi; Demography; demografi;

    Abstract : One purpose of this thesis is to introduce a system for presenting trends in family dynamics in contemporary Sweden. We use annual indexes of birth rates in order to display trends in childbearing for Swedish women over the years since 1961. We use similar annual indexes of marriage risks and divorce risks to display nuptiality trends since 1971. READ MORE

  4. 32. Significance of N2 fixing planktonic symbioses for open ocean ecosystems

    Author : Marcus Stenegren; Rachel A. Foster; Agneta Andersson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; nitrogen fixation; diazotrophs; symbiosis; DDA; cyanobacteria; qPCR; piecewise SEM; microarray; tropics; subtropics; marine; open ocean; Richelia; Calothrix; Marine Ecology; marin ekologi;

    Abstract : Di-nitrogen (N2) fixers, also called diazotrophs, are able to reduce atmospheric N2 into bioavailable nitrogen, giving them an advantage in open ocean regions with low dissolved inorganic nitrogen concentrations. The focus of this thesis are three lineages of symbiotic heterocystous filamentous types (het-1, het-2 and het-3), that associate with several genera of microalgae called diatoms (collectively referred to as Diatom Diazotroph Associations, DDAs). READ MORE

  5. 33. QTL Analysis in the Pig : From the Identification of Quantitative Trait Loci to the Understanding of Molecular Mechanisms

    Author : Ellen Markljung; Leif Andersson; Göran Andersson; Göran Hjälm; Stefan Marklund; Holger Luthman; Uppsala universitet; []
    Keywords : ;

    Abstract : Domestic pigs have become very different form the wild ancestors they originate from. Selection for muscle growth and meat quality has made the pig a good model for genetic studies of muscle development.The first part of this thesis presents a genome-wide scan for quantitative trait loci (QTL) in a cross between Landrace and Hampshire pigs. READ MORE

  6. 34. Development and Assessment of Regeneration Methods for Commercial Automotive Three-Way Catalysts

    Author : Henrik Birgersson; Magali Boutonnet; Jim A. Andersson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; automotive catalyst; TWC; aging; sintering; Pd Rh; Pt Rh; regeneration; oxy-chlorination; dispersion; acid-leaching; mathematical modeling; reaction kinetics; Chemical engineering; Kemiteknik;

    Abstract : Car exhaust catalysts were introduced in the early 1980’s, to limit the release of pollutants such as hydrocarbons, carbon monoxide and nitrogen oxides. These catalysts contain noble metals such as palladium (Pd), platinum (Pt) and rhodium (Rh) and are able to simultaneously abate all three of the above-mentioned pollutants, hence the name three-way catalyst (TWC). READ MORE

  7. 35. Intracellular Degradation of Insulin in Pancreatic Islets

    Author : Monica Sandberg; L.A.Håkan Borg; Stellan Sandler; Arne Andersson; Albert Salehi; Uppsala universitet; []
    Keywords : Cell biology; Cellbiologi;

    Abstract : There is a substantial intracellular degradation of insulin in pancreatic islets. This may be a physiological process, which, in correspondence with biosynthesis and secretion of insulin, would optimize the secretory granule content of the pancreatic β-cell. READ MORE