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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 54 (1976), S. 911-914 
    ISSN: 1432-1440
    Keywords: Histamin-H2-Receptorantagonisten ; Gastrin ; Acetylcholin ; Zollinger-Ellison-Syndrom ; Peptisches Ulcus ; Histamine H2-receptor antagonists ; Gastrin ; Acetylcholine ; Zollinger-Ellison syndrome ; Peptic ulcer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Histamine H2-receptor antagonists, including burimamide, metiamide and cimetidine, are effective antagonists of histamine-stimulated acid secretion from mammalian, avian or reptilian gastric mucosa. Acid secretion stimulated by gastrin or pentagastrin is also inhibited by these drugs, but there is disagreement about the effects of these drugs on acid secretion resulting from activation of acetylcholine receptors. Based on the pharmacological evidence possibilities of treatment by these drugs were discussed in cases with excessive stimulation of acid secretion due to high blood levels of histamine or gastrin. The positive results in several trials on Zollinger-Ellison syndrome and peptic ulcer were very impressive. Some practical problems have still to be solved, for example the appropriate phase for applying the drugs. The demonstrated clinical effectiveness, however, against peptic ulceration offers a clear alternative to surgery for many patients.
    Notes: Zusammenfassung Histamin-H2-Receptorantagonisten, wie Burimamide, Metiamide und Cimetidine, sind wirkungsvolle Hemmstoffe der histaminstimulierten Magensäuresekretion bei Säugern, Vögeln und Reptilien. Auch die gastrinstimulierte Magensaftsekretion läßt sich durch diese Stoffe blocken, während die durch Aktivierung der Acetylcholinreceptoren teilweise, aber nicht in allen Fällen und nicht in ähnlich niedrigen Dosen wie bei Histamin und Gastrin durch die H2-Rezeptorantagonisten beeinflußt wird. Auf dieser pharmakologischen Basis werden Möglichkeiten zur Behandlung von Krankheiten mit H2-Receptorantagonisten diskutiert, die auf erhöhten Blutspiegeln von Histamin und Gastrin beruhen. Die Erfolge in verschiedenen Studien beim Zollinger-Ellison-Syndrom, aber auch bei chronischen Ulcus duodeni sind beeindruckend. Probleme ergeben sich noch aus der Pharmakokinetik, der richtige Zeitpunkt für die Einnahme der Mittel muß erprobt werden. Die erwiesene klinische Wirksamkeit dieser Stoffe beim peptischen Ulcus stellt aber eine klare Alternative zur chirurgischen Therapie bei vielen Patienten dar.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Neural computing & applications 5 (1997), S. 248-257 
    ISSN: 1433-3058
    Keywords: Neural networks ; CARS ; Spectroscopy ; Combustors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract A neural network trained with clustered data has been applied to the extraction of temperature from vibrational Coherent Anti-Stokes Raman (CARS) spectra of nitrogen. CARS is a non-intrusive thermometry technique applied in practical combustors in industry. The advantages of clustering of training data over training with unprocessed calculated spectra is described. The method is applied to CARS data from an isothermal furnace and a liquid kerosene fuelled aeroengine combustor sector rig. Resulting temperatures have been compared with values extracted from the data using conventional least squares fitting and, where possible, mean temperatures measured by pyrometer and blackbody cavity probe. The main advantage of the neural network method is speed, with the potential for online temperature extraction at the spectral acquisition rate of 10 Hz using standard PC hardware.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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