| 1. |
- Hakman, Inger, et al.
(författare)
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Storage protein accumulation during zygotic and somatic embryo development in Picea abies (Norway spruce)
- 1990
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Ingår i: Physiologia Plantarum. - : Wiley. - 0031-9317 .- 1399-3054. ; 80:3, s. 441-445
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Tidskriftsartikel (refereegranskat)abstract
- Total protein was extracted from zygotic embryos and from somatic embryos of Picea abies (L.) Karst. (Norway spruce) cultured in vitro at different times during their development. An analysis by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and 2-dimensional gel electrophoresis of the protein extracts showed that protein composition and the temporal changes in protein abundance were very similar in the two embryo types. Both zygotic and somatic embryos accumulated storage proteins in abundance during their maturation phase of growth; the somatic embryos when cultured on medium containing 90 mM sucrose and 7.6 μM ABA. The major storage proteins are composed of polypeptides with molecular masses of about 22, 28, 33 and 42 kDa and they are identical in both embryo types according to their molecular mass and average isoelectric points. These proteins are also the most abundant proteins in the female gametophytic tissue of the mature seed.
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| 3. |
- Eriksson, Eva, 1973-, et al.
(författare)
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Selected stormwater priority pollutants - a European perspective
- 2007
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Ingår i: Science of the Total Environment. - : Elsevier BV. - 0048-9697 .- 1879-1026. ; 383:1-3, s. 41-51
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Tidskriftsartikel (refereegranskat)abstract
- The chemical characteristics of stormwater are dependent on the nature of surfaces (roads, roofs etc.) with which it comes into contact during the runoff process as well as natural processes and anthropogenic activities in the catchments. The different types of pollutants may cause problems during utilisation, detention or discharge of stormwater to the environment and may pose specific demands to decentralised treatment. This paper proposes a scientifically justifiable list of selected stormwater priority pollutants (SSPP) to be used, e.g., for evaluation of the chemical risks occurring in different handling strategies. The SSPP-list consists of 25 pollutant parameters including eight of the priority pollutants currently identified in the European Water Framework Directive. It contains general water quality parameters (organic and suspended matter, nutrients and pH); metals (Cd, Cr, Cu, Ni, Pb, Pt and Zn); PAH (naphthalene, pyrene and benzo[a]pyrene); herbicides (pendimethalin, phem-nedipham, glyphosate and terbutylazine); and other representative industrially derived compounds (nonylphenol ethoxylates, pentachlorophenol, di(2-ethylhexyl)phthalate, PCB-28 and methyl tert-butyl ether). Tools for flux modelling, enabling calculation of predicted environmental concentrations (PECs), and for ranking the susceptibility of a pollutant to removal within a range of structural stormwater treatment systems or best management practices (BMPs) have been developed, but further work is required to allow all SSPPs to be addressed in the development of future stormwater pollution control measures. In addition, the identified SSPPs should be considered for inclusion in stormwater related monitoring campaigns. (c) 2007 Elsevier B.V. All rights reserved.
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| 7. |
- Sandin, Per, et al.
(författare)
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Precautionary defaults - A new strategy for chemical risk management
- 2004
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Ingår i: Human and Ecological Risk Assessment. - : Informa UK Limited. - 1080-7039 .- 1549-7860. ; 10, s. 1-18
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Tidskriftsartikel (refereegranskat)abstract
- In order to give adequate support to risk managers, new risk assessment methods should be developed that are (1) scientifically sound, (2) simplified, and (3) suited for precautionary risk management. In this Perspective we propose that the notion of a precautionary default can be a useful tool in the development of such methods. A precautionary default is a cautious or pessimistic assumption that is used in the absence of adequate information and that should be replaced when such information is obtained. Furthermore, we point out some promising research areas for the development of such indicators, viz. connections between chemical characteristics such as persistence and effect parameters, monitoring of contaminants in polar regions, monitoring of contaminants in breast milk, application of results from (human) toxicology in ecotoxicology and vice versa, (eco) toxicological test systems that are sensitive to effects on reproduction, and the application of bioinformatic methods to complex data, both in genomic research and in ecotoxicology. We conclude that precautionary decision-making does not require less science, but to the contrary it requires more science and improved communication between scientists and risk managers.
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| 8. |
- Sjöström, Maria, et al.
(författare)
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A bidialectal experiment on voice Identification
- 2008
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Ingår i: Working Papers,: Department of Linguistics and Phonetics, Lund University, Sweden. - Lund. ; 53, s. 145-158
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 9. |
- Sjöström, Maria, et al.
(författare)
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A Switch of Dialect as Disguise
- 2006
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Ingår i: Proceedings from FONETIK 2006. ; , s. 113-116
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 10. |
- Svensson, P. Andreas, 1973-, et al.
(författare)
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How cunning is the puppet-master? Cestode-infected fish appear generally fearless
- 2022
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Ingår i: Parasitology Research. - : Springer. - 0932-0113 .- 1432-1955. ; 121, s. 1305-1315
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Tidskriftsartikel (refereegranskat)abstract
- Trophically transmitted parasites have life cycles that require the infected host to be eaten by the correct type of predator.Such parasites should beneft from an ability to suppress the host’s fear of predators, but if the manipulation is imprecise theconsequence may be increased predation by non-hosts, to the detriment of the parasite. Three-spined sticklebacks (Gasterosteus aculeatus) infected by the cestode Schistocephalus solidus express reduced antipredator behaviours, but it is unknownwhether this is an example of a highly precise manipulation, a more general manipulation, or if it can even be attributedto mere side efects of disease. In a series of experiments, we investigated several behaviours of infected and uninfectedsticklebacks. As expected, they had weak responses to simulated predatory attacks compared to uninfected fsh. However,our results suggest that the parasite induced a general fearlessness, rather than a precise manipulation aimed at the correctpredators (birds). Infected fsh had reduced responses also when attacked from the side and when exposed to odour from afsh predator, which is a “dead-end” for this parasite. We also tested whether the reduced anti-predator behaviours were meresymptoms of a decreased overall vigour, or due to parasite-induced hunger, but we found no support for these ideas. Wepropose that even imprecise manipulations of anti-predator behaviours may beneft parasites, for example, if other behavioursare altered in a way that increases the exposure to the correct predator.
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