| 1. |
- Lindqvist, Kent, 1948-, et al.
(författare)
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Evaluation of inter-organizational traffic injury prevention in a WHO safe community
- 2001
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Ingår i: Accident Analysis and Prevention. - 0001-4575 .- 1879-2057. ; 33:5, s. 599-607
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Tidskriftsartikel (refereegranskat)abstract
- The objective of the study was to examine the effect of a community-based injury prevention program on traffic injuries. A population-based quasi-experimental design was used with pre- and post-implementation measurements in an intervention and a control area. The program was based on inter-organizational participation in detecting and taking action against traffic injuries. The total relative risk for traffic injury in the study area showed only a tendency to decrease following program exposure (odds ratio 0.91, 95% confidence interval 0.81-1.02). No change in relative risk was observed in the control area. The analyses of program impact on injury severity showed that the relative risk for moderate injuries in the study area was reduced by almost half (odds ratio 0.59, 95% confidence interval 0.49-0.69), the risk for severe or fatal injuries remained constant (odds ratio 1.27, 95% confidence interval 0.80-2.02), and the risk for minor injuries increased (odds ratio 1.34, 95% confidence interval 1.13-1.59). The relative risk for moderate injuries was reduced by at least half for mopedists, cyclists, pedestrians, and those leaving or entering a motor vehicle. Community-based injury prevention can be a complement to national traffic safety programs. ⌐ 2001 Elsevier Science Ltd.
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| 4. |
- Gustafsson, Stig-Inge, 1948-
(författare)
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Energy usage and conservation in surfacing lines
- 2000
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Ingår i: Energy Conversion and Management. - 0196-8904 .- 1879-2227. ; 41:15, s. 1649-1669
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Tidskriftsartikel (refereegranskat)abstract
- This paper deals with energy usage and conservation for a surfacing line in a carpentry factory. In this line, wood panels are coated with paint in a highly automated fashion. The products vary in shapes and the way they shall be coated, and therefore, a number of machines are present in the line which is about 100 m long. Sanding machines, roller coaters, dryers etc. are installed, and all machinery uses electricity for their operation. There are, however, other equipments coupled to the line. One example is the wood dust transportation system, and another is the steam system used for heating purposes. By use of a number of electricity meters, monitoring ventilation flow rates etc., it has been possible to analyze how much energy is used in the surfacing line and also to propose measures to reduce this amount.
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| 5. |
- Gustafsson, Stig-Inge, 1948-
(författare)
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Energy Usage in Surfacing Lines
- 2001
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Ingår i: Energy Conversion and Management. - 0196-8904 .- 1879-2227. ; 41:5, s. 1649-1669
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Tidskriftsartikel (refereegranskat)abstract
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| 6. |
- Dahllöf, Ingela, 1963, et al.
(författare)
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The Effect of TBT on the Structure of a Marine Sediment Community - a Boxcosm Study
- 2001
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Ingår i: Marine Pollution Bulletin. - 0025-326X .- 1879-3363. ; 42:8, s. 689-695
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Tidskriftsartikel (refereegranskat)abstract
- The effect of tri-n-butyl tin (TBT) on an intact marine sediment community after five months exposure was investigated. Changes in the structure of macro- and meiofauna communities were determined, as well as the functional diversity of the microbial community using BIOLOG microplates for Gram negative bacteria. Development of tolerance in the microbial community was investigated using Pollution Induced Community Tolerance (PICT) experiments with fluxes of nutrients as effect indicators. TBT affected the structure and recruitment of the macro- and meiofauna at nominal additions of 30137 mol TBT/m2 sediment. Number of species, diversity, biomass and community similarity was reduced at these concentrations compared to control. Species that molt seemed to be the most tolerant since they were predominant in boxes that had received the highest TBT addition and echinoderms were the most sensitive species. Renewed addition of TBT in PICT experiments with sediment from each boxcosm showed that TBT had an effect on individual nutrient fluxes from all sediments. Analyses of the flux patterns revealed a memory of previous TBT exposure, either due to induced tolerance or other community conditioning.
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| 7. |
- Kanervo, Eira, et al.
(författare)
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Dissecting a cyanobacterial proteolytic system : Efficiency in inducing degradation of the D1 protein of photosystem II in cyanobacteria and plants
- 2003
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Ingår i: Biochimica et Biophysica Acta - Bioenergetics. - : Elsevier BV. - 0005-2728 .- 1879-2650. ; 1607:2-3, s. 131-140
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Tidskriftsartikel (refereegranskat)abstract
- A chromatography fraction, prepared from isolated thylakoids of a fatty acid desaturation mutant (Fad6/desAKmr) of the cyanobacterium Synechocystis 6803, could induce an initial cleavage of the D1 protein in Photosystem II (PSII) particles of Synechocystis 6803 mutant and Synechococcus 7002 wild type as well as in supercomplexes of PSII-light harvesting complex II of spinach. Proteolysis was demonstrated both in darkness and in light as a reduction in the amount of full-length D1 protein or as a production of C-terminal initial degradation fragments. In the Synechocystis mutant, the main degradation fragment was a 10-kDa C-terminal one, indicating an initial cleavage occurring in the cytoplasmic DE-loop of the D1 protein. A protein component of 70-90 kDa isolated from the chromatographic fraction was found to be involved in the production of this 10-kDa fragment. In spinach, only traces of the corresponding fragment were detected, whereas a 24-kDa C-terminal fragment accumulated, indicating an initial cleavage in the lumenal AB-loop of the D1 protein. Also in Synechocystis the 24-kDa fragment was detected as a faint band. An antibody raised against the Arabidopsis DegP2 protease recognized a 35-kDa band in the proteolytically active chromatographic fraction, suggesting the existence of a lumenal protease that may be the homologue DegP of Synechocystis. The identity of the other protease cleaving the D1 protein in the DE-loop exposed on the stromal (cytoplasmic) side of the membrane is discussed. ⌐ 2003 Elsevier B.V. All rights reserved.
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| 8. |
- Larsson, Mats, 1976-, et al.
(författare)
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Photoluminescence study of Si/Ge quantum dots
- 2003
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Ingår i: Surface Science. - 0039-6028 .- 1879-2758. ; 532-535, s. 832-836
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Tidskriftsartikel (refereegranskat)abstract
- Ge quantum dots embedded in Si are studied by means of photoluminescence (PL). The temperature dependent PL measurements show two different types of recombination processes related to the quantum dots. We ascribe a peak near 0.80 eV to the spatially indirect recombination in the type-II band lineup where the electron is located in the surrounding Si close to the interface and the hole in the Ge dot. Furthermore, a peak near 0.85 eV is attributed to the spatially direct recombination. We observe a transition from the spatially indirect to the spatially direct recombination as the temperature is increased. The measurements also show an up-shift of the Ge quantum dot emission energy with increasing excitation power density. The blueshift is primarily ascribed to an enhanced confinement of the electron associated with the increased band bending at the type-II Si/Ge interface at high carrier densities. Comparison is made with results, derived from measurements on uncapped samples. For these uncapped samples, no energy shifts due to excitation power or temperatures are observed in contrast to the capped samples. ⌐ 2003 Elsevier Science B.V. All rights reserved.
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| 9. |
- Nilsson, Joacim, et al.
(författare)
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Differentiation-associated redox-regulation in human B cell lines from stem cell/pro-B to plasma cell
- 2004
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Ingår i: Immunology Letters. - : Elsevier BV. - 0165-2478 .- 1879-0542. ; 94:1-2, s. 83-89
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Tidskriftsartikel (refereegranskat)abstract
- Redox-regulation of receptors and transcription factors are important for lymphocyte activation, differentiation and apoptosis. Thioredoxin (Trx) is a key redox-regulating protein and oxidative stress sensor operating in synergy with Trx-reductase and protein disulfide isomerase (PDI). The expression of Trx, PDI, and the Trx-regulated transcription-factor Pax5 were analyzed in a panel of human B cell lines and were compared with that of the Bcl-2 family proteins, also redox-controlled. The panel included representative cells from various stages: FLEB14-4 (pro-B), REH and NALM-6 (pre-B), Rael and Daudi (small mature B), U-698 and NC0467.3 (B-blasts), LP-1, U-1996, and U-266 (plasma cells). We found a significant congruence and co-variation of Trx and Bcl-2 levels in the B-lineage, with high expression levels in early stages (pro-B and pre-B) and in the late stage representing terminally-differentiated plasma cells, whereas mid-stage small resting B cells showed a very low expression. PDI increased significantly in plasma-blasts and plasma cells, indicating its importance in the highly specialized immunoglobulin assembly-machinery, including disulfide-bond isomerization. Pax5 was expressed in early and mid-stages, but was silenced in terminal stages. We conclude that the high Trx and Bcl-2-expression early and late in the B cell maturation pathway reflects a redox-strategy favoring an increased survival potential of the B cells at those stages. © 2004 Elsevier B.V. All rights reserved.
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