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  • 1
    Electronic Resource
    Electronic Resource
    2D tomography with bolometry in DIII-D (abstract)a) : Proceedings of the tenth topical conference on high temperature plasma diagnostics (1995)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 664-664 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A 48-channel platinum-foil bolometer system on DIII-D was installed to achieve better spatial and temporal resolution of the radiated power in diverted discharges. Two 24-channel arrays provide complete plasma coverage with optimized views of the divertor. The divertor radiation profile was measured for a series of radiative divertor and power balance experiments. A significant change in the magnitude and distribution of divertor radiation with heavy gas puffing was observed. Unfolding the radiation profile with only two views requires one to treat the core and divertor radiation separately. The core radiation is fitted to a function of magnetic flux and is then subtracted from the divertor viewing chords. The divertor profile is then fit to a 2D spline as a function of magnetic flux and distance from divertor floor. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1146253
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  • 2
    Electronic Resource
    Electronic Resource
    2D tomography with bolometry in DIII-Da) (1995)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 1201-1204 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A 48-channel platinum-foil bolometer system on DIII-D was installed to achieve better spatial and temporal resolution of the radiated power in diverted discharges. Two 24-channel arrays provide complete plasma coverage with optimized views of the divertor. The divertor radiation profile was measured for a series of radiative divertor and power balance experiments. A significant change in the magnitude and distribution of divertor radiation with heavy gas puffing was observed. Unfolding the radiation profile with only two views requires one to treat the core and divertor radiation separately. The core radiation is fitted to a function of magnetic flux and is then subtracted from the divertor viewing chords. The divertor profile is then fit to a 2D spline as a function of magnetic flux and distance from divertor floor. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1146006
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  • 3
    Electronic Resource
    Electronic Resource
    Study on sex-specific transferrin polymorphism and on the identification of transferrins by radioactive labelling (1975)
    Springer
    Cellular and molecular life sciences 31 (1975), S. 1175-1177 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Sex-specific differences with regard to the intensity of transferrin bands were observed in a noninbred adult mouse population after separation of the serum proteins by polyacrylamide gel electrophoresis. Amongst the female animals, an additional protein fraction was found just above the position of the transferrin bands. By means of a tracer method, using59Fe-labelling, it could be shown that the additional fraction is not a part of the transferrin bands.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02326778
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  • 4
    Electronic Resource
    Electronic Resource
    Effects of pregnancy and lactation on the serum selenium content of rats (1978)
    Springer
    Cellular and molecular life sciences 34 (1978), S. 270-271 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The serum selenium content of rats was measured by means of neutron activation analysis. It was found to drop between the 12th day of pregnancy and term and to return to its original level within 2 days after delivery. Hysterectomy on the 10th day of gestation prevented this decrease. Nursing had no influence on the element level. The findings suggest that placental secretions might be involved in the control of the serum selenium content of rats during pregnancy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01944722
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  • 5
    Electronic Resource
    Electronic Resource
    Glutathione peroxidase in erythrocytes and plasma of rats during pregnancy and lactation (1978)
    Springer
    Cellular and molecular life sciences 34 (1978), S. 986-987 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The glutathione peroxidase activity in the plasma of rats on the 20th day of pregnancy was found to be 50% lower than in nulliparous control animals. During lactation, the level rose again but was still significantly different from that of the control rats on the 20th day post partum. The erythrocyte enzyme activity remained unchanged.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01915302
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  • 6
    Electronic Resource
    Electronic Resource
    038 Identification of 20 kDa-selenoproteins in the testis and other tissues of the rat (1992)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 343 (1992), S. 92-92 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00332032
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  • 7
    Electronic Resource
    Electronic Resource
    Bestimmung von Blei in biologischen Materialien mit Hilfe der flammenlosen Atomabsorptionsspektrometrie (1975)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 277 (1975), S. 355-358 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Blei in Biolog. Material ; Spektralphotometrie ; Atomabsorption ; flammenlos
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Für die Bleianalyse in biologischen Materialien mit Hilfe der flammenlosen Atomabsorption wurde eine Methode entwickelt. Die Proben wurden mit Salpetersäure gelöst. Die überschüssige Säure, durch die das Blei-Absorptionssignal beeinflußt wird, wurde durch Zugabe von Ameisensäure entfernt. Es wurden sowohl die Höhen als auch die Flächen der Absorptionspeaks ausgewertet und die Ergebnisse miteinander verglichen. Bei der Bestimmung des Bleigehalts eines biologischen Standardmaterials konnte gezeigt werden, daß die Methode ausreichende Reproduzierbarkeit und Genauigkeit besitzt.
    Notes: Abstract The samples were dissolved in nitric acid. The excess acid, which influences the lead absorption signal, was removed by the addition of formic acid. Both the heights and the areas of the absorption peaks were evaluated and the results compared. The precision and the accuracy of the method, which was tested by determining the lead content of a biological standard reference material, proved to be satisfactory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00423780
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  • 8
    Electronic Resource
    Electronic Resource
    Problems in the determination of chromium in biological materials. Comparison of flameless atomic absorption spectrometry and neutron activation analysis (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 278 (1976), S. 269-272 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Chrom in Biolog. Material ; Spektralphotometrie, Atomabsorption/Aktivierungsanalyse, Neutronen ; Einflüsse der Probenvorbereitung, flammenlose AAS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary The effects of sample preparation on the analysis of chromium in biological matter have been investigated using brewer's yeast as a test material. The apparent chromium content of the yeast as determined by flameless atomic absorption spectrometry was significantly higher after destruction of the organic matter with HNO3 in a closed pressure vessel than after wet-ashing in open vessels and after direct introduction of the sample into the graphite furnace. The results obtained by neutron activation analysis without any sample preparation, which corresponded to the atomic absorption values after digestion in the pressure vessel, showed that considerable errors arise in the other methods of sample treatment. Chromium analyses of dried and ashed yeast suggest that losses of volatile organic chromium compounds may occur during heating.
    Notes: Zusammenfassung Die Einflüsse der Probenvorbereitung auf die Analyse von Chrom in biologischen Materialien wurden am Beispiel der Bierhefe untersucht. Bei Anwendung der flammenlosen Atomabsorptionsspektrometrie wurden nach der Zerstörung der organischen Substanz mit HNO3 in einem geschlossenen Druckgefäß signifikant höhere Chromkonzentrationen gefunden als nach der Naßveraschung in offenen Gefäßen und nach direkter Eingabe der Proben in die Graphitrohrküvette. Aus dem Vergleich mit den bei der Neutronenaktivierungsanalyse ohne Probenvorbehandlung erhaltenen Ergebnissen, die den Atomabsorptions-Werten nach der Naßveraschung im Druckgefäß entsprachen, ist ersichtlich, daß bei den anderen Methoden der Probenvorbereitung beträchtliche Fehler auftreten. Die Chromanalysen von getrockneten und veraschten Hefeproben lassen vermuten, daß beim Erhitzen Verluste durch leichtflüchtige organische Chromverbindungen entstehen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00445639
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  • 9
    Electronic Resource
    Electronic Resource
    Trocknung und Veraschung biologischer Proben bei der neutronenaktivierungsanalytischen Spurenelementbestimmung (1975)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 274 (1975), S. 195-197 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Spurenelementen in Biolog. Material, Serum ; Aktivierungsanalyse, Neutronen ; Einfluß von Trocknung und Veraschung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Änderung im Elementgehalt von Blutserumproben aufgrund von Trocknungs- und Veraschungsprozeduren wurden für diejenigen Spurenelemente untersucht, die mit der instrumentellen Neutronenaktivierungsanalyse nach Langzeitbestrahlung bestimmt werden konnten (Ag, Co, Cr, Cs, Fe, Rb, Sb, Sc, Se und Zn). Für einige Elemente wurden nach der Ofentrocknung bei 90° C und nach der Tieftemperaturveraschung niedrigere Konzentrationen als nach der Gefriertrocknung gefunden. Im Falle des Selens, von dem mehrere flüchtige Verbindungen bekannt sind, konnten keine Unterschiede zwischen den gefriergetrockneten, ofengetrockneten und veraschten Proben festgestellt werden.
    Notes: Abstract The changes in the element content of blood serum samples due to drying and ashing procedures were investigated for those trace elements which could be determined by instrumental neutron activation analysis after long-time irradiation (Ag, Co, Cr, Cs, Fe, Rb, Sb, Sc, Se, and Zn). For some elements lower concentrations were found after oven-drying at 90° C and after low temperature ashing than after freeze-drying. In the case of selenium, which is known to form several volatile compounds, no differences could be detected between the freeze-dried, oven-dried and ashed samples.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00440393
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  • 10
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    Selenium research in mammals using nuclear analytical methods and related techniques in conjunction with biochemical procedures (2004)
    Springer
    Details
    Publication Date: 2004-01-01
    Print ISSN: 0236-5731
    Electronic ISSN: 1588-2780
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Published by Springer
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