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New palynological data for Toarcian (Lower Jurassic) deep-marine sandstones of the Western Caucasus, southwestern Russia

Goryacheva A. A., Zorina S. O., Ruban D. A., Eskin A. A., Nikashin K. I., Galiullin B. M., Morozov V. P., Mikhailenko A. V., Nazarenko O. V., Zayats P. P.

Geologos

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2018

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Vol. 24, No. 2

127--136

EN

Information on Jurassic palynomorphs from the Greater Caucasus is potentially of great importance, but its availability to the international research community is severely limited. New palynological data for Toarcian deposits of the Western Caucasus are recorded in the present paper. Particularly, dinoflagellate cysts are described for the first time from the Bagovskaja Formation; palynomorphs are found in sandstone levels within this unit. The most representative assemblage includes pollen (with predominant bisaccate pollen), spores (Cyathidites being commonest), and dinoflagellate cysts amongst which the predominant taxon is Nannoceratopsis spiculata. The dinocyst assemblage implies a late Toarcian age for the upper part of the Bagovskaja Formation. On the basis of these new palynostratigraphical results, the range of the formation is extended; previously, only the lower part had been dated on ammonite evidence.

2

New data on the continental deposits from the Cao Bang Basin (Cao Bang-Tien Yen Fault Zone, NE Vietnam) - biostratigraphy, provenance and faciespattern

Wysocka A., Pha D. P., Durska E., Czarniecka U., Thang D. V., Filipek A., Cuong N. Q., Tuan D. M., Huyen N. X., Tha H.V.

Acta Geologica Polonica

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2018

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Vol. 68, no. 4

689--709

EN

The Cao Bang Basin is the northernmost of the basins related to the Cao Bang-Tien Yen Fault Zone in northern Vietnam. The basin is filled with a thick series of continental deposits. However, the exact age of the sedimentary basin infill has been under discussion for a long time. Because of new published data, the authors have decided to revisit this basin. Palynological data has allowed us to assign the Cao Bang Basin infill to the Lower Oligocene PC1 complex of the Shangcun Fm. (southern China). Among the saccate grains of gymnosperms, the domination of Cathaya and Pinus was observed, whereas angiosperms are represented by Carya, Celtis, Hammamelidaceae, Ulmus and also Pterocarya, Quercus, the Castanea–Castanopsis–Lithocarpus group, and the Loranthaceae. Among pteridophytes occur Laevigatosporites, Osmundaceae, and Pteris. The sedimentological features of the Cao Bang Basin are distinct from those of other basins from the Cao Bang-Tien Yen Fault Zone. The basin is filled with a wide variety of clastic deposits, from some of coarse-grained, alluvial-fan origin, through sandy beds of fluvial origin up to fine, organic-rich lacustrine deposits. The coarse-grained lithofacies are built of clasts derived mainly from local sources. The sandstones from the basin equally are submature or immature. They contain a lot of lithoclasts, the composition of which depends on the sample location within the basin. The potential source area is composed of older sedimentary units and of granitic rocks. The geochemical samples studied reflect the geochemical composition of silicic source rocks with only a minor contribution of basic components. The succession that fills the basin is interpreted as a typical fill for relatively long-lasting evolving half-graben or strike-slip basins. Moreover, the basin is partly occupied by a subsequent present-day sedimentary basin of Quaternary age.

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Integrated palaeontological characteristics (ammonites, ostracods, foraminifers, dinocysts) of the Berriasian deposits of central Crimea

Savelieva J., Feodorova A., Shurekova O., Arkadiev V.

Volumina Jurassica

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2014

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Vol. 12, no. 1

129--162

EN

The Berriasian deposits of the central Crimea have been studied in order to compose a composite sequence of the stage with detailed palaeontological characterization. The Berriasian includes the Bedenekyrskaya Formation (packstones), Bechku Formation (siltstones, sandstones) and Kuchkinskaya Formation (sponge packstones, clays, siltstones, and coral-algal bioherm framestones). The Jacobi, Occitanica and Boissieri zones were identified based on ammonites found in the sections. A micropalaeontological analysis determined the following: 6 foraminiferal assemblages, the Costacythere khiamii – Hechticythere belbekensis and Costacythere drushchitzi – Reticythere marfenini ostracod assemblages, and a Phoberocysta neocomica dinocyst assemblage. Palaeoecological analysis of the ostracod and foraminiferal associations indicates a moderately warm marine basin with normal salinity and shallow depths (tens of meters). Only the sponge horizon was probably deposited in a deeper-water environment.

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Resistance of Bacillus Amyloliquefaciens Spores to Melt Extrusion Process Conditions

Ciera L, Beladjal L, Almeras X, Gheysens T, Nierstrasz V, Van Langenhove L, Mertens J

Fibres & Textiles in Eastern Europe

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2014

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Vol. 22, no. 2 (104)

102--107

EN

With the increasing demand for functionalised textile materials, industry is focusing on research that will add novel properties to textiles. Bioactive compounds and their benefits have been and are still considered as a possible source of unique functionalities to be explored. However, incorporating bioactive compounds into textiles and their resistance to textile process parameters has not yet been studied. In this study, we developed a system to study the resistance of Bacillus amyloliquefaciens spores against melt extrusion process parameters, like temperature (21, 200, 250, 300 °C), pressure (0.1, 0.6 and 1.0 MPa) and residence time (0, 1 and 10 minutes). The spores were successfully embedded in PET (polyethylene terephthalate) films and fibres through melt extrusion. Afterwards the survival rate of the spores was determined after extrusion and the data was used to develop a quadratic equation that relates the survival rate to the spore concentration.

PL

Wraz ze wzrostem zainteresowania funkcjonalizacją tekstyliów, przemysł skupia swoją uwagę na badaniach, dzięki którym można nadać nowe właściwości tekstyliom. Bioaktywności produktów jest jednym z czynników, które mają bardzo duże znaczenie. Jednakże możliwości wprowadzania substancji bioaktywnych do stosowanych materiałów włókienniczych nie są dostatecznie poznane. W pracy przedstawiono badania pozwalające na określenie odporności zarodników Bacillus amyloliquefaciens na warunki procesu wytłaczania stopów polimerów. Badania prowadzono przy temperaturach 21, 200, 250, 300 °C, ciśnieniach 0.1, 0.6 and 1.0 MPa oraz czasie oddziaływania 1 i 10 minut. Zarodniki wprowadzono do stopu PET i wytłaczano w postaci folii i włókien. Określono zależności przeżycia zarodników w zależności od ich stężenia w stopie polimerów.

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A reassessment of the Pennsylvanian lycophyte cone Triplosporite Brown

Thomas B. A., Bek J.

Acta Geologica Polonica

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2014

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Vol. 64, no. 2

139--145

EN

The type collection of the lycopsid cone species Triplosporite brownii Unger was re-examined to assess its in situ spores. The cones are monosporangiate with only microspores that possess both cingulum and zona. They equate to the dispersed miospore genus Lycospora and would be identified as Lycospora cf. pseudoannulata. Therefore, the genus Triplosporite Brown is shown to be a junior synonym to Lepidostrobus and a species emendation is given. A comparison is given with the other Lepidostrobus cones which yielded similar in situ microspores of the Lycospora pellucida Group.

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Mechanizm infekcji drewna budowlanego przez grzyby

Ważny J.

Drewno : prace naukowe, doniesienia, komunikaty

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2004

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vol. 47, nr 171

97-104

PL

Ilość drewna użytkowanego w budownictwie stanowi znaczący procent jego zastosowania w gospodarce i życiu człowieka. Posiada ono niezaprzeczalne walory techniczne, estetyczne i proekologiczne. Jego cechą ujemną, podobnie jak i innych materiałów organicznych, jest podatność na porażenie mikrobiologiczne, głównie przez grzyby. Stwarza to konieczność zastosowania odpowiednich zabiegów profilaktycznych zarówno natury chemicznej, jak i konstrukcyjnej.

EN

On the basis the literature on the subject as well as the autor's own investigations, this study discusses current opinions concerning and the mechanism of the infection of construction wood by fungi causing wood deterioration and moulding. In addition, the role of the consecutive stages of infection: production, release, disseminates and germination of spores as well as the course of the proper infection were reviewed. The opinion was confirmed that buildings are mainly infected by spores.