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- Eklund, Patrik, 1958-, et al.
(författare)
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Diagnosis of nephropathia epidemica by adaptation through Lukasiewicz inference
- 1990
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Ingår i: Computational Intelligence, III. - Amsterdam, The Netherlands : Elsevier. - 0444891188 ; , s. 237-246
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Bokkapitel (refereegranskat)abstract
- This paper describes a method how to arrive at a medical expert system (as a knowledge based system) to support physicians in classifying patients in diagnosis of Nephropathia epidemica (NE). We thereby present a link between Lukasiewicz inference and learning in neural nets, as a formal connection between uncertainty in logical implication and synaptic weights. The system presented uses clinical findings and laboratory investigations to arrive at predictions whether or not patients suffer from NE. Although we are willing to call our system a medical expert system, it could equally well be called a decision support system, this being more in spirit to what such a system really offers a physician.
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| 4. |
- Palmqvist, Eva, et al.
(författare)
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Development of a simple detector for microbial metabolism, based on a polypyrrole dc resistometric device
- 1994
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Ingår i: Biosensors and Bioelectronics. - : Elsevier BV. - 0956-5663. ; 9:8, s. 551-556
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Tidskriftsartikel (refereegranskat)abstract
- A simple device for the detection of metabolic effects was constructed based on a conducting polymer (polypyrrole) coated with an agarose layer containing immobilised yeast cells. A galvanostatic potentiometric method was used to measure the resistance of the sensor, thus minimising interferences from fluctuations in solution conductivity. The resulting biosensor was used as a simple indicator of yeast metabolism. It responded within 20 minutes to increases in the glucose concentration by decreased resistance (40% per 5 g/l). When the metabolism was inhibited by a toxic substance the response disappeared. The device could be reconditioned by washing off the agarose/cell layer with hot water, followed by the application of a new agarose layer with fresh cells. Because the manufacture of the device is simple and the measuring principle is uncomplicated, it is specially suited for mass production for quick field tests.
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| 6. |
- Åmand, Lars-Erik, 1957, et al.
(författare)
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Influence of Fuel on the Emission of Nitrogen Oxides (NO and N2O) from and 8-MW Fluidized bed Boiler
- 1991
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Ingår i: Combustion and Flame. - 1556-2921 .- 0010-2180. ; 84:1 and 2, s. 181-196
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Tidskriftsartikel (refereegranskat)abstract
- Emissions of nitric oxide (NO) and nitrous oxide (N20) from an 8-MW circulating fluidized bed boiler have been measured. The influence of the volatile content of the fuel was investigated by using three different fuels and operating the boiler at different bed temperatures, primary air stoichiometries, and excess air ratios. The measurements show that the emissions of NO are extremely low and dependent upon the char loading of the boiler as well as on the existence of unburned combustible matter such as CO and H2 in the gas phase. The char content and CO levels are influenced by the fuel, the bed temperature, and the air-to-fuel ratio in the combustion chamber. The levels of N20 emission are high and caused by the low temperatures used in fluidized beds. The N20 emission is influenced by bed temperature and oxygen concentration as well, but the influence of bed temperature is opposite compared to the dependence of bed temperature on the NO emission.
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