| 1. |
- Bergman, Eva, et al.
(författare)
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Synthesis of theoretical and empirical experineces from nutrient and cyprinid reductions in Lake Ringsjön
- 1999
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Ingår i: Hydrobiologia. - 0018-8158. ; 404, s. 145-156
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Tidskriftsartikel (refereegranskat)abstract
- The reduction in external phosphorus load to Lake Ringsjön during the 1980s, did not result in improved water transparency during the following ten-year period. Furthermore, a fish-kill in the Eastern Basin of the lake, in addition to a cyprinid reduction programme (biomanipulation; 1988–1992), in contrast to theory, did not lead to any increase in zooplankton biomass or size. This absence of response in the pelagic food chain may have been attributed to the increase in abundance of YOY (0+) fish, following the fish reduction programme. Despite the lack of effect on zooplankton, there was a decrease in phytoplankton biomass, a change in species composition and an increase in water transparency following biomanipulation. In 1989, one year after the fish-kill in Eastern Basin, the Secchi depth (summer mean) increased from 60 cm to 110 cm. In the following years, water transparency increased further, despite an increase in phosphorus loading. An unexpected effect of the biomanipulation was an increase in benthic invertebrate and staging waterfowl abundances, which occurred 2–4 years after fish reduction. Hence, the response in the benthic community following biomanipulation was considerably stronger than in the pelagic community. A likely explanation is that reduction in abundance of the benthic feeding fish species bream (Abramis brama), strongly affected the benthic invertebrate fauna. In this paper, we present what we believe happened in Lake Ringsjön, and which processes are likely to have been important at various stages of the restoration process.
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| 2. |
- Linder, Astrid, et al.
(författare)
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The New Neck Design for the Rear-End Impact Dummy, BioRID I
- 1998
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Ingår i: Annual Proceedings. - : Association for the Advancement of Automotive Medicine. ; , s. 172-192
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- A new mechanical neck was developed for a new dummy possessing a complete articulated spine, for low speed rear-end collisions. The new neck consists of seven cervical elements connected by hinge joints. The neck stiffness properties were created by rubber blocks between each pair of vertebrae in combination with simulated muscle elements between the head and T1. The neck was validated against volunteer tests (Δv of 7 km/h) results. Both displacement and acceleration of the head relative to the upper torso for both duration and peak values, were in agreement with the volunteer data.
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| 3. |
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| 4. |
- Zuccarello, Guido, et al.
(författare)
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HIV-1 protease inhibitors based on acyclic carbohydrates
- 1998
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Ingår i: Journal of Organic Chemistry. - : American Chemical Society (ACS). - 0022-3263 .- 1520-6904. ; 63:15, s. 4898-4906
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Tidskriftsartikel (refereegranskat)abstract
- A series of acyclic C2-symmetric HIV protease inhibitors readily accessible from D-mannitol have been developed. Several of the compounds synthesized showed significant in vitro activity against HIV-1 protease.
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| 5. |
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| 6. |
- Ahlén, Anders, et al.
(författare)
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Wireless IP - a new PCC project
- 1999
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Ingår i: Proc. PCC Workshop, Lund, Sweden. ; , s. 100-101
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Konferensbidrag (refereegranskat)
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| 7. |
- Andersson, Annika, et al.
(författare)
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Comparison between automatic ribotyping and random amplified polymorphic DNA analysis of Bacillus cereus isolates from the dairy industry
- 1998
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Ingår i: International journal of food microbiology. - 0346-718X. ; 47:1-2, s. 147-51
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Tidskriftsartikel (refereegranskat)abstract
- Discrimination by automatic ribotyping and random amplified polymorphic DNA PCR, RAPD, was compared for 40 different B. cereus dairy isolates, 4 different B. mycoides isolates and 6 culture collection strains. RAPD-PCR has previously shown to be useful for tracing contamination routes of B. cereus to milk. Automatic ribotyping using EcoRI and PvuII separated the B. cereus and B. mycoides isolates/strains into 36 different ribotypes. RAPD-typing with primer 1 (5?-CCGAGTCCA-3?) and primer 2 (5?-CCGGCGGCG-3?) generated 40 different RAPD-profiles. However, 17 isolates clustered into 8 groups, irrespective of the primer and restriction enzyme used and in all but one case, the isolates with the same pattern were isolated from the same dairy. To conclude RAPD-typing was only slightly more discriminatory than automatic ribotyping and therefore automatic ribotyping proved to be a useful, standardized and quick method to discriminate between B. cereus strains. As the two methods are based on completely different genetic properties, one of the methods can be used to confirm the results from the other method, when identity among isolates needs to be verified.
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| 8. |
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| 9. |
- Anell, Anders, et al.
(författare)
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Resursfördelning och finansiering
- 1999
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Ingår i: 2000-talets äldrevård och äldreomsorg : rapporten dokumenterar "Forskningsforum för forskare och politiker om vård av och omsorg om äldre". ; :491
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Bokkapitel (populärvet., debatt m.m.)
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| 10. |
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