Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Pavle I. Premović"'
Autor:
NENAD S. KRSTIĆ, DRAGAN M. DJORDJEVIĆ, BRATISLAV Ž. TODOROVIĆ, JUSTYNA CIESIELCZUK, PAVLE I. PREMOVIĆ
Publikováno v:
Journal of the Serbian Chemical Society, Vol 74, Iss 12, Pp 1477-1489 (2009)
Geochemical analysis for Fe was made on a representative sample of dickite-rich hydrothermal clay from Jedlina Zdroj. The mineralogy of the sample is comparatively simple, dickite being the principal component (>95 wt. % of the total sample), with le
Externí odkaz:
https://doaj.org/article/967f4d5c43084cc9a7779a8a07cfc970
Cretaceous-Paleogene Boundary Clays from Spain and New Zealand: Arsenic Anomaly and the Deccan Traps
Autor:
Pavle I. Premović
Publikováno v:
International Letters of Natural Sciences. 55:1-8
High arsenic (As) contents have been reported in numerous Cretaceous-Paleogene boundary (KPB) clays worldwide including that from Spain (at Caravaca and Agost) and N. Zealand (at Woodside Creek). The Deccan Traps (India) enormous volcanism is one of
Publikováno v:
Geochemistry International. 54:378-385
We report the occurrence of micrometer-sized silver particles in the red (“impact” or “ejecta”) layer of the Fish Clay. These appear to be embedded into the biogenic/abiogenic calcite matrix. Energy dispersive X-ray analysis indicates that th
Publikováno v:
Energy & Fuels. 30:8080-8082
Mn2+ ions incorporated into kerogen isolated from the Zvonce black shale (Silur, Eastern Serbia) were detected by electron spin resonance (ESR) spectroscopy. Similar species were found in dark shale (Silur/Devon, central Morocco). No Mn2+ ions were p
Autor:
Pavle I. Premović
Publikováno v:
Open Geosciences, Vol 4, Iss 3, Pp 383-387 (2012)
High soot contents have been reported in Cretaceous-Paleogene boundary (KPB) clays worldwide. One of the interpretations suggests this material comes from combustion of fossil fuels such as crude oil, coal or oil shales near the Chicxulub impact site
Publikováno v:
Geologica Carpathica. 62:181-186
A new method for determining the concentration of vanadyl ions in claysA novel and simple method for quantitatively determining the concentration of vanadyl ions in clays using electron spin resonance data has been developed. Several vanadyl standard
Autor:
Pavle I. Premović
Publikováno v:
Geochemistry International. 49:55-65
The KPB sections at Hojerup in Denmark, Agost and Caravaca in Spain and El Kef in Tunisia and (elsewhere in the world) consists of a very thin reddish biogenic calcite-poor smectite-rich “impact” layer overlain by a thicker smectite-rich marl. Th
Autor:
Pavle I. Premović
Publikováno v:
International Journal of Astrobiology. 8:193-206
The massive amount of impact-generated atmospheric CO2at the Cretaceous-Palaeogene boundary (KPB) would have accumulated globally in the surface ocean, leading to acidification and CaCO3undersaturation. These chemical changes would have caused a cris
Autor:
Pavle I. Premović
Publikováno v:
Geochemistry International. 47:513-521
The marine Cretaceous-Paleogene boundary (KPB) section at Hojerup-Fish Clay consists of a very thin red smectite-rich carbonate-poor (“impact”) layer overlain by a thick black marl. Similar red layers are found in the KPB sections at Agost in Spa
Publikováno v:
Journal of Molecular Structure. :264-273
Pullulan is a water-soluble, extracellular neutral polysaccharide with a linear flexible chain of α-(1 → 6)-linked maltotriose units, the structure of which is intermediate between pullulan and amylose structures because of the co-existence of bot