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| 2. |
- Adiels, Lars, 1952-, et al.
(författare)
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Test of CP violation with K0 and K‾0 at LEAR
- 1985
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Ingår i: Physics with antiprotons at LEAR in the ACOL era. - Gif sur Yvette : Editions Frontières. - 2863320351 ; , s. 467-482
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 3. |
- Köhler, Th., et al.
(författare)
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Precision measurement of strong interaction isotope effects in antiprotonic 16O, 17O, and 18O atoms
- 1986
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Ingår i: Physics Letters B. - : Elsevier BV. - 0370-2693 .- 1873-2445. ; 176:3-4, s. 327-333
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Tidskriftsartikel (refereegranskat)abstract
- The strong-interaction effects in antiprotonic 16O, 17O, and 18O atoms were measured at the CERN antiproton facility, LEAR. The shifts ε{lunate} and the widths Γ of the 3d level were determined to be -112±20 eV (16O), -140±46 eV (17O), -195±20 eV (18O), and 495±45 eV (16O), 540±150 (17O), 640±40 eV (18O), respectively. © 1986.
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| 4. |
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| 5. |
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| 6. |
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| 7. |
- Goldkuhl, G., et al.
(författare)
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Att specificera informationssystem : En användarorienterad och systematisk metodik
- 1982
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Bok (refereegranskat)abstract
- Informationssystem utvecklas för att stödja människor i deras verksamheter. Informationssystem används som stöd för människors kunskapsbildning och handlande i verksamheter. I den här boken presenteras en metodik för att specificera inforamtionssystem på ett användarorienterat och systematiskt sätt. Processen att specificera inforamtionssystem delas upp i tre steg:1. Förändringsanalys (Är det informationssystem som är en möjlig och lämplig lösning på en organisations problem?)2. Verksamhetsstudier (Vilka olika inforamtionssystem skall man utveckla och vilka bidrag skall de ge till verksamheten?)3. Informationsanalys (Vad skall informationssystemen göra, dvs vilka typer av meddelanden och regler skall de innehålla?)Metodiken presenteras med hjälp av illustrativt genomgående praktikfall. Förutom de tre ovan nämnda områdena behandlas även datasystemutformning, dvs hur användarnas specifikationer kan utnyttjas för att utforma önskade datasystem.Boken vänder sig till studerande vid universitet/högskolor och andra läroanstalter. Boken vänder sig även till personer verksamma i praktikfältet, såsom systemerare och informationsystemanvändare.Boken var förpublicerad som en rapport TRITA-IB-ADB-1091, Institutionen för Administrativ Databehandling (ADB), Kungliga Tekniska Högskolan (KTH) och Stockholms universiet (1979-08-01)
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| 8. |
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| 9. |
- Nilsson, O G, et al.
(författare)
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Combined cholinergic and serotonergic denervation of the forebrain produces severe deficits in a spatial learning task in the rat
- 1988
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Ingår i: Brain Research. - : Elsevier BV. - 0006-8993. ; 453:1-2, s. 235-246
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Tidskriftsartikel (refereegranskat)abstract
- The purpose of the present experiments was to study the effects of a combined cholinergic and serotonergic denervation of the rat forebrain on spatial learning using the Morris water maze task. Experiment 1 compared the acute effects of a radiofrequency lesion of the septum, an intraventricular 5,7-dihydroxytryptamine (5,7-DHT) lesion, and a combined septal plus 5,7-DHT lesion. Although the 5,7-DHT lesion alone did not produce any significant deficits in the water maze task, the lesion greatly potentiated the learning impairments produced by the septal lesion. Thus, the rats with both lesions combined showed severe difficulties in finding the platform and they did not develop any place navigational search strategy. This effect was not dependent on any effect on swimming ability or locomotor activity. The long-term effects of the combined septal and 5,7-DHT lesion was investigated in experiment 2, where the rats were tested in the water maze both 5 and 24-25 weeks after surgery. In this experiment, the rats showed the same severe deficits in spatial learning in both tests, showing that the impairments remain for long periods and after extended training. The results show that a combination of a cholinergic and a serotonergic denervation of the rat forebrain produces pronounced impairments in spatial learning in the Morris water maze task, and that this effect is long-lasting. This indicates that the recently proposed serotonergic deficit in patients with Alzheimer's disease may contribute importantly to the cognitive disabilities in these patients.
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| 10. |
- Bassant, M H, et al.
(författare)
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Electrophysiological and pharmacological properties of neurons within solid basal forebrain transplants in the rat brain
- 1988
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Ingår i: Brain Research. - : Elsevier BV. - 0006-8993. ; 460:1, s. 8-16
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Tidskriftsartikel (refereegranskat)abstract
- Electrophysiological and pharmacological properties of neurons within solid basal forebrain transplants were studied in adult rats anesthetized with urethane. No specific topography of the neurons recorded was observed within the graft. The mean spontaneous activity of the grafted neurons (GNs) was relatively low (4.9 impulses/s) but not unlike that of other central neurons in situ. A large proportion of GNs fired with regular discharges, but other modes of discharge were also observed. A few rhythmically bursting GNs were recorded having a discharge pattern very much like that of the rhythmically bursting medial septal neurons. The responses of GNs to glutamate, gamma-aminobutyric acid, acetylcholine, serotonin and norepinephrine was fairly similar to those described in other central structures.
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