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  • 60J25  (2)
  • Cerebral local blood flow  (2)
  • 1H NMR  (1)
  • After-potential  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Multiple actions of substance P and other tachykinins on sympathetic neurons in rat prevertebral ganglia
    Amsterdam : Elsevier
    Regulatory Peptides 46 (1993), S. 257-259 
    Details
    ISSN: 0167-0115
    Schlagwort(e): After-potential ; Autonomic nervous system ; Polymerase chain reaction (PCR) ; Substance P ; Sympathetic ganglion ; Tachykinin ; Tachykinin receptor
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Medizin
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/0167-0115(93)90052-A
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  • 2
    Digitale Medien
    Digitale Medien
    Symmetric Skorohod topology onn-variable functions and hierarchical Markov properties ofn-parameter processes (1995)
    Springer
    Probability theory and related fields 103 (1995), S. 25-43 
    Details
    ISSN: 1432-2064
    Schlagwort(e): 31C15 ; 60J25 ; 60J30 ; 60J45
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik
    Notizen: Summary We introduce a new Skorohod topology for functions of several variables. Since ann-variable function may be viewed as a one-variable function with values in the set of (n−1)-variable functions, this topology is defined by induction from the classical Skorohod topology for one-variable functions. This allows us to define the notion of completen-parameter symmetric Markov processes: Such processes are, for any 1≤p≤n, rawp-parameter Markov processes (in the sense of our previous paper [17]) with values in the space of (n−p)-variable functions. We prove, for these processes and their Bochner subordinates, a maximal inequality which implies the continuity of additive functionals associated with finite energy measures. We finally present several important examples.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01199030
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  • 3
    Digitale Medien
    Digitale Medien
    Markov properties of multiparameter processes and capacities (1995)
    Springer
    Probability theory and related fields 103 (1995), S. 45-71 
    Details
    ISSN: 1432-2064
    Schlagwort(e): 31C15 ; 60J25 ; 60J30 ; 60J45
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik
    Notizen: Summary We study a class of multiparameter symmetric Markov processes. We prove that this class is stable by subordination in Bochner's sense. We show then that for these processes, a probabilistic and an analytic potential theory correspond to each other. In particular, additive functionals are associated with finite energy measures, hitting probabilities are estimated by capacities, quasicontinuity corresponds to path-continuity. In the last section, examples show that many earlier results, as well as new ones, in this domain can be obtained by our method.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01199031
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  • 4
    Digitale Medien
    Digitale Medien
    An experimental study of the pathogenesis of the selective lesion of the globus pallidus in acute carbon monoxide poisoning in cats (1983)
    Springer
    Acta neuropathologica 61 (1983), S. 232-238 
    Details
    ISSN: 1432-0533
    Schlagwort(e): Selective lesion of the globus pallidus ; Acute carbon monoxide poisoning ; Cerebral local blood flow ; Hydrogen clearance method
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Twenty-eight mature cats were exposed to 0.3% carbon monoxide (CO) gas for 90–193 min using artificial ventilation. The systemic blood pressure (BP), venous pressure (VP), blood flow of the left common carotid artery (CF), and blood gas were monitored. The local blood flow (LBF) of the globus pallidus, putamen, or claustrum was measured by the hydrogen clearance method. Pallidal lesions were found histologically in 14 cats. The period of CO inhalation and the time thereafter were divided into the following four stages in the animals with pallidal lesions. Stage 1: Initial phase with rapid increase in the CF and LBF, and rapid decrease in the BP. Stage 2: Middle phase with slow decrease in the BP, CF, and LBF. Stage 3: Terminal phase with rapid decrease in the BP, CF, and LBF. Stage 4: Recovery phase. The changes in stage 3 were not so prominent in the animals without pallidal lesions. The LBF of the globus pallidus of the animals with lesions decreased to 67.3±20.7% of the initial value at the terminal stage of CO inhalation, while it was 188±46.7% in those without lesions. The difference was statistically significant (P〈0.01). The LBF of the putamen or claustrum in the animals with lesions in the globus pallidus was 140±24.6% at this stage, and it was significantly higher than that of the globus pallidus (P〈0.01). Other factors, such as CO inhalation time, degree of acidosis, and terminal CO-Hb concentration, did not correlate with the occurrence of the pallidal lesion.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00691991
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  • 5
    Digitale Medien
    Digitale Medien
    A study of experimental cyanide encephalopathy in the acute phase —Physiological and neuropathological correlation (1984)
    Springer
    Acta neuropathologica 64 (1984), S. 99-107 
    Details
    ISSN: 1432-0533
    Schlagwort(e): Cyanide encephalopathy ; Selective white matter lesion ; Cerebral local blood flow
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary A study was performed to elucidate the significance of various physiological factors contributing to the pathogenesis of experimental cyanide encephalopathy, such as the systemic arterial blood pressure, venous pressure, common carotid blood flow and local blood flow of the cerebral grey and white matters, and blood gas including pH. The histology and topography of the brain damage was also analysed. Twenty-one cats were divided into four groups. The animals in groups 1, 2 and 3 were subjected to continuous infusion of 0.2% sodium cyanide solution and to the ensuing hypotension below 100 mm Hg by administering a ganglion-blocking drug and by respiratory arrest. Severe damage developed in the deep cerebral white matter, corpus callosum, pallidum and substantia nigra, but the damage of the cerebral cortex and hippocampus was not remarkable. The animals in group 4 that were subjected to cyanide infusion without significant hypotension (above 100 mm Hg), but to the same degree of acidosis as that of the the other groups, had similar morphological changes, but to a lesser degree. On the basis of our physiological and morphological findings, we speculated that the pathophysiological factors of tissue hypoxia and subsequent hypotension operated in cyanide leucoencephalopathy. The topographic selectivity seemed to be related to the characteristic cerebral vascular system, and the severity of the white matter lesions was related to the intensity of both hypoxia and hypotension during cyanide infusion, but not to the extent of acidosis, total dose of cyanide or duration of its infusion per se.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00695572
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  • 6
    Digitale Medien
    Digitale Medien
    Effect of intramolecular and intermolecular exchange processes on the 1H NMR spectra of 2-chloro-1,3,2-dioxarsolanes (1987)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 25 (1987), S. 484-488 
    Details
    ISSN: 0749-1581
    Schlagwort(e): 1H NMR ; 13C NMR ; 2-Chloro-1,3,2-dioxarsolanes ; Intra- and inter-molecular exchange ; Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The 1H and 13C NMR spectra of solutions of 2-chloro-4,4,5,5-tetramethyl-1,3,2-dioxarsolane (1) and 2-chloro-1,3,2-dioxarsolane (2) are reported as a function of temperature, concentration and solvent. These data indicate rapid intramolecular conformational averaging for (1) and (2) under all the conditions investigated. Additionally, intermolecular conformational averaging processes are shown to be present. The kinetic parameters for intermolecular exchange were obtained from line shape analysis of the 1H NMR data. These results indicate the intermolecular exchange to be bimolecular in nature, involving a four-centered transition state. The O—CH2—CH2-O torsional angle of (2) has been calculated from the analysis of its AA′BB′ 1H NMR spectral patterns, obtained at low concentrations in the absence of intermolecular exchange.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/mrc.1260250605
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