| 1. |
- Andersson, Maria, 1965-, et al.
(författare)
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Cost-effective energy system measures studied by dynamic modelling
- 1993
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Ingår i: 2nd International Conference on Advances in Power System Control, Operation and Management, APSCOM-93.. - London : Institution of Electrical Engineers (IEE). - 0852965699 ; , s. 448-455
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Konferensbidrag (refereegranskat)abstract
- In a national electricity system there often exists a great potential for increasing the cost-efficiency of the electricity use. However, if the economic incentives for improving the use of the system are too weak, it is most likely that this potential will not be utilised. If electricity tariffs reflect real electricity costs, over the year and the day, cost-effective incentives will arise for introducing energy system measures that will reduce the energy system cost considerably. This paper presents two energy system analyses of an existing Swedish municipal energy system. The analyses are carried out with a simulation model for electricity use in industrial energy systems, and an optimisation model that is based on linear programming.<>
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| 2. |
- Andersson, Maria, 1965-
(författare)
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Cost-effective incentives for local electric utilities and industries in co-operation : modelling of technical measures
- 1993
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- In the Swedish electricity system there is a great potential for increasing the cost efficiency of the electricity use. However, today the economic incentives, offered for instance by existing electricity rates, are too weak to improve the use of the system. On the Swedish electricity market there are, at least, three different actors, the power producer, the distributor and the customer. Today these actors act separately due to low awareness of the costs for electricity generation, over the year and the day. If the actors are aware of the real electricity costs, cost-effective incentives will arise to introduce energy system measures that will reduce the energy system cost considerably. The thesis presents two energy system analyses of an existing Swedish municipality. The first analysis deals with the introduction of industrial end-use measures, with the local utility’s existing electricity rates as boundary conditions. The analysis is carried out with a simulation model for electricity use in industries. The second analysis deals with the introduction of energy system measures, on the municipal supply-side and demand-side, when the local electric utility and the customers are regarded as one system. The analysis is carried out with an optimization model, that is based on linear programming. The results show that if 17 industries introduce end-use measures, with the existing electricity rates as boundary conditions, their energy system costs will be reduced by 12 MSEK for a time period of 10 years, whereas the local utility will increase its energy system cost by 6 MSEK. However, if there is a co-operation between the local electric utility and the customers, their joint energy system cost will be reduced by 330 MSEK for a time period of 10 years.
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| 3. |
- Andersson, Maria, 1965-, et al.
(författare)
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Energy system cost reduction as a result of end-use measures and the introduction of a biomass-fired co-generation plant
- 1993
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Ingår i: International Conference on Renewable Energy - Clean Power 2001. - London : Institution of Electrical Engineers (IEE). - 0852966059 ; , s. 37-42
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Konferensbidrag (refereegranskat)abstract
- This paper will describe an energy system analysis of an existing Swedish municipality of 90 000 inhabitants. The analysis, which is performed by using an optimization model will show what energy system measures that should be introduced to minimize the total energy system cost. In the existing municipality a local utility distributes heat, for the district heating system, and electricity. The heat is generated by the utility and the electricity is purchased from a large power producer.
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| 4. |
- Bjartell, Anders, et al.
(författare)
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Production of alpha-1-antichymotrypsin by PSA-containing cells of human prostate epithelium
- 1993
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Ingår i: Urology. - 1527-9995. ; 42:5, s. 502-510
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Tidskriftsartikel (refereegranskat)abstract
- Prostate-specific antigen (PSA) is a chymotrypsin-like serine protease exclusively produced by the prostate epithelium, and abundant in seminal fluid. In serum, PSA is predominantly complexed to a liver-derived serine protease inhibitor, alpha-1-antichymotrypsin (ACT). A higher proportion of serum PSA is complexed to ACT in prostate cancer than in benign prostate hyperplasia. Since the molecular basis for this is unclear, we have investigated whether or not ACT may be produced in the prostate gland. Immunocytochemistry, using either monoclonal or polyclonal IgGs, demonstrated specific immunostaining for ACT in normal PSA-containing prostate epithelium. Production of ACT in the normal PSA-producing prostate epithelium was demonstrated by means of nonradioactive in situ hybridization using 30-mer anti-sense DNA probes for ACT and for PSA. The ACT and PSA coding transcripts, as detected by in situ hybridization, were distributed perinuclearly, in contrast to the specific immunostaining for ACT and PSA which was most intense in the apical portion of the secretory cells. The results strongly suggest local production and release of ACT by the normal prostate epithelium that may be important for interaction between PSA and ACT in extracellular compartments.
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