GLORIA

GEOMAR Library Ocean Research Information Access

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Analytical Chemistry and Spectroscopy  (1)
  • Animal experiments  (1)
Document type
Keywords
Publisher
Years
  • 1
    ISSN: 1433-8580
    Keywords: Dilution curves ; Flow measurement ; Isotopes ; Animal experiments
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wurden Tierexperimente durchgeführt, um zu beweisen, daß es möglich ist, die Durchblutung eines peripheren Organs mit der Isotopenverdünnungsmethode nach i.v. Injektion zu messen. Es konnte gezeigt werden, daß die mathematische Beschreibung der Verdünnungsvorgänge in 3 Mischkammern in Reihe, die in einer vorhergehenden Arbeit dargestellt wurde, auch für den tierischen Organismus gilt, wo rechtes und linkes Herz sowie peripheres Capillargebiet als Mischkammern wirken. Die für den Verdünnungsvorgang im peripheren Organ errechnete Zeitkonstante ist umgekehrt proportional der Durchblutung, die mit einem elektromagnetischen Flowmeter gemessen wurde.
    Notes: Summary Animal experiments were carried out to prove that it is possible to estimate the blood flow through peripheral organs with the isotope dilution technique after intravenous injection. It could be shown that the mathematical treatment of the dilution events in three mixing chambers in a row, presented in a foregoing paper, is valid also for the animal organism where the mixing chambers are right heart, left heart and peripheral capillary system. The time constant calculated for the dilution event within the peripheral organ is inversely proportional to the blood flow through this organ measured with an electromagnetic flowmeter.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 3 (1974), S. 137-142 
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Description / Table of Contents: An automatic device for preparing samples for X-ray fluorescence analysis is described. Based on a fusion technique with the proper flux, it produces glass buttons which can lbe directly analysed with the spectrometer.The apparatus consists essntially of two high frequency furnaces which are used for fusing the samples and casting the beads, respectively. The corresponding vessels, i.e. crucible and mould, and made of a special platinum + gold + rhodium alloy. The automatic preparation sequence lasts eight minutes.The preparation reproducibility which can be achieved with this device is illustrated by an application to the analysis of high grade iron ores dissolved in sodium tetraborate. The standard deviation obtained for iron is 0.15% at a 60% iron level.
    Notes: Description d'un appareil automatique de préparation des échantillons pour l'analyse par fluorescence de rayons X, La technique est basée sur la mise en soluation solide de l'échantillon en uve de l'obtention d'une perle directement analysable.L'appreil est composé de deux fours HF, I'un pourla fusion, I'autre pour la coulée Les récipients de fusion et de coulée sont en alliage platine+ or+ rhodium. La seéquence automatique de préparation dure huit minutes.Une application á I'anlyse de minerais de fer reches par miscen solution dens le tétraborate de sodium illustre les reproductibilités de préparation que I'on peut atteindre avec ce matériel (écart type de reproductibiliteé égal á 0,15% de Fe au niveau de 60%).
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...