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  • Digitale Medien  (6)
  • 1985-1989  (6)
  • 1989  (6)
  • 1
    Digitale Medien
    Digitale Medien
    Organizational Behavior (1989)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Psychology 40 (1989), S. 327-351 
    Details
    ISSN: 0066-4308
    Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Thema: Psychologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1146/annurev.ps.40.020189.001551
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  • 2
    Digitale Medien
    Digitale Medien
    PGE2 concentrations in renal venous plasma and renal lymph during basal and stimulated conditions in the dog (1989)
    Springer
    Pflügers Archiv 413 (1989), S. 673-675 
    Details
    ISSN: 1432-2013
    Schlagwort(e): dog ; kidney ; renal lymph ; prostaglandins ; PGE2
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract PGE2 concentration (pg/ml ± SEM) was measured in canine renal lymph (394±115), renal venous plasma (276±55), arterial plasma (172±34) and urine (1290±934). Control periods were followed by an infusion of the sodium salt of arachidonic acid (AA) (40 μg/kg min) into the renal artery to stimulate prostaglandin synthesis. During infusion of AA PGE2 concentrations increased significantly in renal lymph (672±155) renal venous plasma (549±123), and urine (6768±1420), but not in the arterial plasma (176±31). Concentrations in renal lymph and renal venous plasma were not significantly different under either condition. These findings indicate that PGE2 concentration in renal venous plasma is, by and large, representative of mean PGE2 concentrations in the cortical renal interstitium, although focal inhomogeneities in PGE2 concentration in the different areas of the renal interstitium cannot be excluded. Since flow rate of renal lymph is insignificant in comparison with renal venous plasma flow rate total renal PGE2 output can be estimated from measurements in renal venous plasma and urine.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00581819
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  • 3
    Digitale Medien
    Digitale Medien
    Structure of dichlorobis(trimethylphosphine oxide)cobalt(II) (1989)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 45 (1989), S. 1697-1699 
    Details
    ISSN: 1600-5759
    Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Thema: Chemie und Pharmazie , Geologie und Paläontologie , Physik
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1107/S0108270189003598
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  • 4
    Digitale Medien
    Digitale Medien
    Anaerobic biosynthesis of unsaturated fatty acids in the cyanobacterium, Oscillatoria limnetica (1989)
    Springer
    Archives of microbiology 152 (1989), S. 215-217 
    Details
    ISSN: 1432-072X
    Schlagwort(e): Cyanobacterium ; Oscillatoria limnetica ; Anacrobic unsaturated fatty acid synthesis ; Positional isomers
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The mechanism for synthesis of monounsaturated fatty acids under aerobic and anaerobic conditions was studied in the facultative anaerobic cyanobacterium, Oscillatoria limnetica. The hexadecenoic acid (C16∶1) of aerobically grown O. limnetica was shown to contain both the Δ7 (79%) and Δ9 (21%) isomers, while the octadecenoic (C18∶1) acid was entirely the Δ9 acid. Incorporation of [2-14C] acetate into the fatty acids under aerobic conditions resulted in synthesis of the Δ7 and Δ9 C16∶1 and the Δ9 C18∶1. Synthesis of unsaturated fatty acids in the presence of DCMU required sulfide. Anaerobic incubations in the presence of DCMU and sulfide (less than 0.003% atmospheric oxygen) resulted in a two-fold increase in monounsaturated fatty acids of both Δ7 and Δ9 C16∶1 and Δ9 and Δ11 C18∶1. The synthesis of these isomers is characteristic of a bacterialtype, anaerobic pathway.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00409653
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  • 5
    Digitale Medien
    Digitale Medien
    The effect of intracoronary diltiazem on regional myocardial function and development of infarcts in porcine hearts (1989)
    Springer
    Research in experimental medicine 189 (1989), S. 15-23 
    Details
    ISSN: 1433-8580
    Schlagwort(e): Diltiazem ; Regional myocardial function ; Infarct size ; Pigs
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The effect of intracoronary (i.c.) pretreatment with diltiazem on regional myocardial function and the development of infarcts was investigated in regionally ischemic, reperfused porcine hearts. The left anterior descending coronary artery (LAD) was distally ligated in 16 pigs for 20–90 min followed by 24 h of reperfusion. Eight pigs were treated with increasing doses of i.c. diltiazem (0.375 mg/min, 0.75 mg/min, 1 mg/min) prior to ischemia. Eight pigs served as controls. Regional myocardial function was assessed by implanted ultrasonic crystals. Infarct size was determined as ratio of infarcted (tetrazolium stain) to ischemic myocardium (dye technique). I.c. diltiazem mainly depressed early systolic shortening (isovolumetric contraction) and lengthening during the first half of diastole. Pretreatment with this calcium antagonist significantly delayed the development of infarcts. In control experiments, a mean infarct size of 74% was found after 45-min ischemia. At that time no infarction was observed in the treated group, where infarcts started to evolve after 60-min ischemia. It is concluded that the favorable action of i.c. diltiazem can mainly be ascribed to a reduced myocardial oxygen consumption at the onset of ischemia.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01856024
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  • 6
    Digitale Medien
    Digitale Medien
    The utility of the panic disorder concept (1989)
    Springer
    European archives of psychiatry and clinical neuroscience 238 (1989), S. 268-279 
    Details
    ISSN: 1433-8491
    Schlagwort(e): Agoraphobia ; Panic ; Phobic disorders ; Tricyclic antidepressants ; Monoamine oxidase inhibitors
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary In this paper we discuss the theory that agoraphobic avoidances are central and spontaneous panics an epiphenomenon to the development of agoraphobia. Moreover we discuss the theory that posits a fixed cognitive-catastrophizing set as causal for panic. We conclude these theories do not fit the facts. We argue that it is important to distinguish between spontaneous panic and chronic or anticipatory anxiety and avoidance. Such a distinction allows for an understanding of the roles of anti-spontaneous panic medications such as tricyclics and MAOI's, as well as exposure therapy, in the treatment of panic disorder with agoraphobia. The former serves the purpose of blocking panic attacks while the latter undermines phobic avoidance, but only after the panic attacks have ceased through proper medication. We conclude that recognizing the key role of spontaneous panic and its variants in anxiety nosology is a necessary guide for etiological, psychophysiological and therapeutic research in this rapidly developing area.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00449808
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