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  • Anisakis typica  (1)
  • Inorganic Chemistry  (1)
  • 1
    Publication Date: 2022-01-31
    Description: Cetaceans, including dolphins, serve as definitive hosts of zoonotic anisakid nematodes, which are important etiological agents for human anisakiasis and allergy-associated health risks. With limited knowledge of these zoonotic parasites from the marine environment in the Philippine waters, the stranding of a Fraser’s dolphin (Lagenodelphis hosei Fraser, 1956) off the central Philippines made it possible to identify the worm species isolated from its gut. Parasitological examinations were carried out using morphological and molecular tools. Morphologically, the SEM and LM data revealed that the specimens belong to the genus Anisakis of the Type 1 group. Molecularly, PCR-RFLP results of the ITS region generated only a single fragment pattern on all worm samples corresponding to the reported molecular keys for A. typica. Further sequence and phylogenetic analyses of both ITS rDNA and mtDNA COX2 genes confirmed the anisakid nematodes’ identity as A. typica. The molecular data obtained in this study support previous findings on the possible existence of local variants of A. typica in this region.
    Description: Published
    Description: Refereed
    Keywords: Lagenodelphis hosei ; Fraser’s dolphin ; Anisakis typica ; PCR-RFLP ; ITS rDNA ; mtDNA COX2 ; ASFA_2015::M::Marine fisheries ; ASFA_2015::P::Parasites
    Repository Name: AquaDocs
    Type: Journal Contribution
    Format: 183-192
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  • 2
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Phosphorus. 101 Synthesis and Properties of Diphosphaboriranes (t-BuP)2BNR2 and (t-BuP)2BNR1R2The reaction of K(t-Bu)P—P(t-Bu)K with diorganylaminodichloroboranes under suitable conditions leads to the new 1,2-di-tert-butyl-3-diorganylamino-1,2,3-diphosphaboriranes (-1,2-diphospha-3-boracyclopropanes) (t-BuP)2BNR2 (2, 7) and (t-BuP)2BNR1R2 (3 - 6), respectively. The P2B three-membered heterocycles 2 - 5 can be isolated in good yields. They are relatively stable against dimerization to the corresponding phosphorus boron six-membered ring compounds with opposite boron atoms. The rate of dimerization depends on steric and electronic influences of the substituents at the three-membered ring. All NMR spectroscopic results are only consistent with a structure in which the B and N atoms show planar coordination and are connected by a partial double bond.
    Notes: Díe Reaktion von K(t-Bu)P—P(t-Bu)K mit Diorganylaminodichlorboranen führt unter geeigneten Bedingungen zu den neuen 1,2-Di-tert-butyl-3-diorganylamino-1,2,3-diphosphaboriranen (-1,2-diphospha-3-bora-cyclopropanen) (t-BuP)2BNR2 2 und 7 bzw. (t-BuP)2BNR1R2 3 - 6. Die P2B-Dreiring-Heterocyclen 2 - 5 können in guter Ausbeute isoliert werden und sind gegenüber Dimerisierung zu den entsprechenden Phosphor-Bor-Sechsringverbindungen mit gegenüberliegenden Boratomen verhältnismäßig beständig. Die Dimerisierungsgeschwindigkeit hängt von sterischen und elektronischen Einflüssen der Substituenten am Dreiring ab. Die Gesamtheit der NMR-spektroskopischen Befunde ist nur mit einer Struktur vereinbar, in der die B- und N-Atome planar koordiniert sind und eine partielle B—N-Doppelbindung vorliegt.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
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