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Träfflista för sökning "WAKA:ref ;lar1:(gu);srt2:(2000-2004);srt2:(2000)"

Sökning: WAKA:ref > Göteborgs universitet > (2000-2004) > (2000)

  • Resultat 531-540 av 656
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531.
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532.
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533.
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534.
  • Sander, Wolfram, et al. (författare)
  • 4-Oxo-2,3,5,6-tetrafluorocyclohexa-2,5-dienylidene - A highly electrophilic triplet carbene
  • 2000
  • Ingår i: Chemistry - A European Journal. - 0947-6539. ; 6, s. 4567-4579
  • Tidskriftsartikel (refereegranskat)abstract
    • The 4-oxocyclohexa-2,5-dienylidenes are an interesting class of highly electrophilic carbenes. We investigated the reactivity of the 2,3,5,6-tetrafluorinated and -tetrachlorinated derivatives 1b and 1c with small molecules under conditions of matrix isolation. The reactions with molecular oxygen and with carbon monoxide produce the expected carbonyl O-oxides and ketenes, respectively. As a result of the extreme electrophilicity of 1b and c both carbenes insert with no or very small activation barriers into H 2 or the CH bonds of hydrocarbons. Obviously, spin restrictions for these formally spin-forbidden reactions do not result in substantial thermal activation barriers.
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535.
  • Schmidt, Caroline, 1966, et al. (författare)
  • Chlamydia pneumoniae seropositivity is associated with carotid artery intima-media thickness
  • 2000
  • Ingår i: Stroke. - 0039-2499 .- 1524-4628. ; 31:7, s. 1526-1531
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND AND PURPOSE: Infection may both augment the atherosclerotic process and contribute to later manifestations of overt clinical disease. Chlamydia pneumoniae elementary bodies have been detected in atherosclerotic lesions. The aim of the present study was to investigate whether elevated titers of antibodies and circulating immune complexes to C pneumoniae were associated with ultrasound findings indicating presence of atherosclerosis in the carotid artery. METHODS: Serum titers of antibodies to C pneumoniae (IgM, IgA, IgG, and circulating immune complex) were related to intima-media thickness (IMT) and plaque status measured by B-mode ultrasound in the carotid artery in 113 men with treated hypertension and at least 1 of the following risk factors: hypercholesterolemia, smoking, or diabetes. RESULTS: Any of the titers was elevated in 56 (50%) men, and common carotid artery IMT was thicker in this group compared with the 57 men without any elevated titers (1.00 versus 0.92 mm, P<0.05). There were no accompanying differences in blood pressure, lipid levels, blood glucose, or smoking. Elevation of separate antibody types and circulation immune complex were also associated with increased IMT. In the latter group, systolic blood pressure was higher among seropositive patients compared with those who had no circulating immune complex. Seropositivity was not related to plaque status. CONCLUSIONS: Seropositivity for C pneumoniae was associated with an increased intima-media thickness in the common carotid artery but not plaque status in hypertensive men at high risk for cardiovascular disease.
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536.
  • Schomburg, E D, et al. (författare)
  • Nociceptive input to ascending tract neurones forwarding information from low threshold cutaneous and muscle afferents in cats.
  • 2000
  • Ingår i: Neuroscience research. - 0168-0102. ; 38:1, s. 117-20
  • Tidskriftsartikel (refereegranskat)abstract
    • Effects of noxious skin stimulation (central foot pad and foot dorsum) by radiant heat were tested on neurones of ascending tracts with a main input from non-nociceptors. The dominating effect on ventral spinocerebellar tract neurones was a depression (mainly from the pad). Responses of spinocervical tract neurones were either facilitated (predominantly from the foot dorsum) or depressed (predominantly from the pad). The dominating effect on neurones tentatively classified as dorsal horn dorsal spinocerebellar tract neurones was facilitatory from both skin areas. Similar effects were evoked by selective actions of C-fibres when A-delta fibres were blocked by TTX.
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537.
  • Schomburg, E D, et al. (författare)
  • Nociceptive input to spinal interneurones in reflex pathways from group II muscle afferents in cats.
  • 2000
  • Ingår i: Neuroscience research. - 0168-0102. ; 38:4, s. 447-50
  • Tidskriftsartikel (refereegranskat)abstract
    • Effects of noxious stimulation of the skin by radiant heat were tested on responses of first order interneurones in reflex pathways from group II muscle afferents in mid-lumbar, lower-lumbar and sacral segments of the spinal cord. In mid- and lower-lumbar segments both background discharges and monosynaptically evoked responses of intermediate zone interneurones were facilitated. Those of mid-lumbar dorsal horn interneurones were also facilitated suggesting that both these interneuronal populations contribute to the facilitation of flexion reflexes by nociceptors. In contrast, the dominating effects of noxious heat on sacral dorsal horn group II interneurones were inhibitory. The effects evoked by selective activation of C fibres, after A-delta fibres had been blocked by TTX, were similar to those obtained before TTX application.
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  • Resultat 531-540 av 656
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tidskriftsartikel (555)
konferensbidrag (82)
forskningsöversikt (12)
bokkapitel (7)
Typ av innehåll
refereegranskat (656)
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Herlitz, Johan, 1949 (17)
Karlsson, Thomas, 19 ... (17)
Caidahl, Kenneth, 19 ... (12)
Karlson, Björn W., 1 ... (11)
Gillberg, Christophe ... (10)
Ohlsson, Claes, 1965 (9)
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Fu, Michael, 1963 (9)
Olsson, Mats, 1960 (9)
Fahlke, Claudia, 196 ... (8)
Carlsson, Sven G., 1 ... (7)
Wadenvik, Hans, 1955 (7)
Fagerberg, Björn, 19 ... (7)
Johannsson, Gudmundu ... (7)
Allwood, Jens, 1947 (7)
Jankowska, Elzbieta (7)
Gräfenstein, Jürgen, ... (6)
Hagberg, Lars, 1951 (6)
Martinsson, Tommy, 1 ... (6)
Wennergren, Göran, 1 ... (6)
Pavia, Henrik, 1964 (5)
Bergström, Tomas, 19 ... (5)
Gisslén, Magnus, 196 ... (5)
Wahlström, Jan, 1939 (5)
Wolff, Rolf, 1953 (5)
Dobers, Peter, 1966 (5)
Lissner, Lauren, 195 ... (5)
Jemt, Torsten, 1950 (5)
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Rosengren, Lars, 195 ... (4)
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Mölne, Johan, 1958 (4)
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Wold, Agnes E, 1955 (4)
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