ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
  • 1
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The feasibility of utilizing liquid scintillation counting as a detection method for the liquid chromatographic analysis of99Tc is evaluated. The chemical quenching of constituents commonly found in liquid chromatographic mobile phases is investigated, and quench corrections are presented. Quantification of99Tc is achieved over a concentration range of 10−3 to 10−8M on quiescent KTCO4 solutions, with sample volumes of 0.3 ml, yielding a counting efficiency from 51 to 59% for a narrow 150 channel window. The potential for the double isotope labelling of technetium complexes and the implications of the liquid scintillation counting of99Tc in flowing eluents are discussed.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Negative Ion Fast Atom Bombardment Mass Spectrometry is conducted on potassium pertechnetate evaporated onto a copper probe. The mass spectra of pertechnetate /TcO 4 − / reveal the presence of mononuclear and polynuclear technetium oxo species which form general series TcnO n+1 − ,...TcnOn+4 with n=1 to 5. The polynuclear species are believed to be formed via gas phase reactions.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1573-8248
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé Les arthropodes parasites et prédateurs deAcraea terpsicore (L.) ont été déterminés dans la zone forestière au Ghana. Les très jeunes larves sont la proi d'un acarien indéterminé. Les pentatomidesPlatynopus rostratus Dru etMacroraphis acuta Dall. sont aussi des prédateurs des larves.Telenomus spp. parasite les œufs. Le tachinideCarcelia normula Curran et l'ichneumonideCharops diversipes Roman parasitent les larves.C. diversipes est parasité par le chalcidienBrachymeria feae Nasi et l'eulophidePediobius taylori Kerreich. Des essais en laboratoire montrent que la parasitisme deA. terpsicore parC. diversipes est significantivement plus élevé au ler stade, suivi par les 2ème, 3ème et 4ème stades. Le 5ème stade n'est pas attaqué. Une seule larve deC. diversipes se développe dans un hôte, selon un délai qui varie en raison inverse de l'âge de l'hôte au moment du parasitisme. La femelle deC. diversipes peut pondre dès l'émergence.
    Notes: Abstract The arthropod parasites and predators ofAcraea terpsicore (L.) were determined in the forest zone of Ghana. An unidentified mite was predatory on the very young larvae. The pentatomidsPlatynopus rostratus Dru. andMacrorhaphis acuta (Dall.) were also predatory on the larvae.Telenomus sp. parasitized the eggs. The tachinidCarcelia normula (Curran) and the ichneumonidCharops diversipes Roman were parasitic on the larvae.C. diversipes was hyperparasitized by the chalcididBrachymeria feae Masi and the eulophidPediobius taylori Kerrich. Laboratory tests showed that parasitism ofA. terpsicore byC. diversipes was significantly highest in the 1st instar, followed by the 2nd, 3rd and 4th. The 5th instar was not parasitized. These results seemed to reflect both host susceptibility and parasite preference. Only a singleC. diversipes larva developed in a host. The developmental period of the parasite egg and larva varied inversely with the age of the host at which it was parasitized. A femaleC. diversipes could oviposit immediately after emergence.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Inventiones mathematicae 28 (1975), S. 209-226 
    ISSN: 1432-1297
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...