| 1. |
- Rahmberg, Magnus, et al.
(författare)
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Use of congener profiles to trace sources of chlorinated dibenzo-p-dioxins and dibenzofurans in environmental samples
- 2011
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- In this study different multivariate methods were used to link the content of dioxins and furans in biota to different sources. The data used in the study were mainly from already existing analysis off dioxins and furans but also some data has been generated by sampling and analysis within the project. Lack of data, especially from biological samples, limited the modelling to the set of 17 toxic congeners comprised of seven dioxins and 10 furans. Two different multivariate modelling methods were used, principal component analysis (PCA) and positive matrix factorisation (PMF) for the source apportionment. The PCA shows that herrings from the Bothnian Bay and Gulf of Finland has well defined pattern. The spread in pattern is larger for the Herrings caught in The Baltic proper and Bothnian bay. Also the age of the Herring effect the patterns, 2-year old Herring are well grouped and separated from older Herrings. When adding source samples (flue gas, combustion, background) to the PCA for biota the only well defined overlap were between biota and flue gas. The PMF model for Baltic Herring points to three significant sources. One of them is identified to be a background/combustion. One of the other sources is not fully identified but some parts of the pattern are likely flue gas. The last source can not be identified by use of data collected in this project.
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| 2. |
- Danielson, Mats, et al.
(författare)
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A Process for Participatory Democracy in Electronic Government
- 2008
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Ingår i: Journal of Multi-Criteria Decision Analysis. - : Wiley. - 1057-9214 .- 1099-1360. ; 15:1-2, s. 15-30
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Tidskriftsartikel (refereegranskat)abstract
- This paper presents a project and case study integrating decision methods into democratic processes. The case discussed is a set of three complicated decisions in a municipality in Sweden. The decisions had been postponed on several occasions prior to bringing in the method described in the paper. The method employed consists of two main parts. The interaction part contains the communication channels directed to the stakeholders. The decision-process part consists of a three-layered working process model. As a part of the method, the project was highly visible on the web. Citizens were encouraged to submit material to the project. All intermediate results of the process were continuously published, enhancing transparency. For each decision, the analysis consisted of comparing all alternatives, taking the respective criteria into account as weighted or ranked by the participants. A method for recording compromises analytically was also used. The purpose was not to replace the political process but to support it in a structured way.
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| 3. |
- Danielson, Mats, 1959-, et al.
(författare)
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Decision Process Support for Participatory Democracy
- 2008
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Ingår i: Journal of Multi-Criteria Decision Analysis. - : Wiley. - 1057-9214 .- 1099-1360. ; 15:1, s. 15-30
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Tidskriftsartikel (refereegranskat)abstract
- This paper presents a project and case study integrating decision methods into democratic processes. The case discussed is a set of three complicated decisions in a municipality in Sweden. The decisions had been postponed on several occasions prior to bringing in the method described in the paper. The method employed consists of two main parts. The interaction part contains the communication channels directed to the stakeholders. The decision-process part consists of a three-layered working process model. As a part of the method, the project was highly visible on the web. Citizens were encouraged to submit material to the project. All intermediate results of the process were continuously published, enhancing transparency. For each decision, the analysis consisted of comparing all alternatives, taking the respective criteria into account as weighted or ranked by the participants. A method for recording compromises analytically was also used. The purpose was not to replace the political process but to support it in a structured way.
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| 4. |
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| 5. |
- Nilsson, Anders K., 1982, et al.
(författare)
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Acylated monogalactosyl diacylglycerol : prevalence in the plant kingdom and identification of an enzyme catalyzing galactolipid head group acylation in Arabidopsis thaliana
- 2015
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Ingår i: The Plant Journal. - : Wiley-Blackwell. - 0960-7412 .- 1365-313X. ; 84:6, s. 1152-1166
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Tidskriftsartikel (refereegranskat)abstract
- The lipid phase of the thylakoid membrane is mainly composed of the galactolipids mono-and digalactosyl diacylglycerol (MGDG and DGDG, respectively). It has been known since the late 1960s that MGDG can be acylated with a third fatty acid to the galactose head group (acyl-MGDG) in plant leaf homogenates. In certain brassicaceous plants like Arabidopsis thaliana, the acyl-MGDG frequently incorporates oxidized fatty acids in the form of the jasmonic acid precursor 12-oxo-phytodienoic acid (OPDA). In the present study we further investigated the distribution of acylated and OPDA-containing galactolipids in the plant kingdom. While acyl-MGDG was found to be ubiquitous in green tissue of plants ranging from non-vascular plants to angiosperms, OPDA-containing galactolipids were only present in plants from a few genera. A candidate protein responsible for the acyl transfer was identified in Avena sativa (oat) leaf tissue using biochemical fractionation and proteomics. Knockout of the orthologous gene in A. thaliana resulted in an almost total elimination of the ability to form both non-oxidized and OPDA-containing acyl-MGDG. In addition, heterologous expression of the A. thaliana gene in E. coli demonstrated that the protein catalyzed acylation of MGDG. We thus demonstrate that a phylogenetically conserved enzyme is responsible for the accumulation of acyl-MGDG in A. thaliana. The activity of this enzyme in vivo is strongly enhanced by freezing damage and the hypersensitive response.
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