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  • 1
    ISSN: 1432-0738
    Keywords: Bismuth-organ distribution ; Bismuth-binding to kidney proteins ; Selenite-effect on distribution and bismuth binding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Nach einmaliger und wiederholter subkutaner Verabreichung wurde Wismut zu mehr als 50% der „erreichbaren Menge” in den Nieren gefunden. Es war dort vorwiegend in der löslichen Frakion und in großem Umfang an einen Eiweißstoff vom Molekulargewicht 7000 gebunden. Bei wiederholter erabreichung von Wismut wurde auch dieser Eiweißstoff vermehrt gefunden. Die gleichzeitige Verabreichung von Selen erhöhte die „verfügbare Menge” von Wismut, wahrscheinlich wegen eingeschränkter Ausscheidung. Zugleich wurden Unterschiede in der Organverteilung von Wismut festgestellt. Der Anteil in den Nieren wirde geringer und derjenige in Leber und sonstigen. Organen größer. Der Eiweißkomplex mit dem Molekulargewicht 7000 verschwand gänzlich. Die durch Wismut stimulierte Synthese dieses Eiweißstoffes wirde aber nicht ganz verhindert.
    Notes: Abstract Subcutaneous administration of bismuth, both single and multiple, resulted in deposition of this metal mainly in the kidneys which contained over 50% of the ‘accessible pool’ of bismuth. In the kidneys bismuth was bound mainly by the soluble fraction in which it was complexed with a protein of molecular weight of about 7000. Multiple administration of bismuth increased the level of this protein. Selenite administration brought about an increase in the ‘accessible pool’ of bismuth, probably due to a drop in excretion, and also changes in the organ distribution of this metal. The retention in the kidneys was diminished while those in the liver and in other tissues were augmented. These changes were accompanied by a change in the chemical form of bismuth present in the kidneys manifested by the total disappearance of the protein complex of molecular weight of 7000. The increased synthesis of this protein due to bismuth administration was not abolished completely.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 50 (1990), S. 379-384 
    ISSN: 1432-0630
    Keywords: 72.40.+w ; 85.60.Gz
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract This paper considers the Hg1−x Zn x Te alloy system as a potential material for the fabrication of infrared photodiodes. The influence of different junction current components (diffusion, tunneling and depletion layer currents) on the R 0 A product of n+-pHg1−x Zn x Te photodiodes is analysed. The upper theoretical limits of the R 0 A product and detectivity are determined. Results of calculations are compared with experimental data reported by other authors and those measured in our laboratory. Preliminary results on related technology and the properties of Hg1−x Zn x Te prepared by the ion-etching technique are presented.
    Type of Medium: Electronic Resource
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