52 research outputs found

    Mentors : the generation 1935-1985

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    The lives and scientific contributions of five eminent academic geologists and paleontologists; James Alloiteau (Museum National d’Histoire Naturelle, Paris, France), Dorothy Hill (University of Queensland, Australia), Marius Lecompte (University of Louvain, Belgium), Masao Minato (Hokkaido University, Sapporo, Japan), and Maria Różkowska (Adam Mickiewicz University, Poland) are briefly summarized here. Each of these paleontologists made major contributions to the study of fossil corals and/or sponges, and each overcame considerable difficulties and disruptions in their lives to excel as mentors to us. All showed remarkable determination and love for paleontological research, and inspired their students and colleagues to understand details of structure and systematic positions of fossil corals and sponges. Each of these individual mentors was the subject of a presentation by a former student at the 11th International Symposium on Fossil Corals and Sponges in Liege, Belgium; thus, somewhat broader coverage of each is provided in the abstracts volume of the meeting

    Electrospinning 3D bioactive glasses for wound healing

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    An electrospinning technique was used to produce three-dimensional (3D) bioactive glass fibrous scaffolds, in the SiO2-CaO system, for wound healing applications. Previously, it was thought that 3D cotton wool-like structures could only be produced when the sol contained calcium nitrate, implying that the Ca2+ and its electronic charge had a significant effect on the structure produced. Here, fibres with a 3D appearance were also electrospun from compositions containing only silica. A polymer binding agent was added to inorganic sol-gel solutions, enabling electrospinning prior to bioactive glass network formation and the polymer was removed by calcination. While the addition of Ca2+ contributes to the 3D morphology, here we show that other factors, such as relative humidity, play an important role in producing the 3D cotton-wool-like macrostructure of the fibres. A human dermal fibroblast cell line (CD-18CO) was exposed to dissolution products of the samples. Cell proliferation and metabolic activity tests were carried out and a VEGF ELISA showed a significant increase in VEGF production in cells exposed to the bioactive glass samples compared to control in DMEM. A novel SiO2-CaO nanofibrous scaffold was created that showed tailorable physical and dissolution properties, the control and composition of these release products are important for directing desirable wound healing interactions

    Sociospatial behaviour and housing for central Australian aborigines

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    Australian Cretaceous cnidaria and porifera

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    Australian Cretaceous sponge and coral faunas are reviewed and increased with new discoveries. The largest new fauna described, from the very thin Maastrichtian Miria Formation, an uncemented chalky marl, in the Carnarvon Basin, Western Australia, includes a poriferan, Ventriculites sp., the hydrozoans, Stylaster cretaceous sp. nov. and Astya nielseni Wells, 1977 originally described from the Eocene of Tonga and the scleractinian corals Smilotrochus carnarvonensis sp. nov., Conotrochus giraliensis sp. nov., Parasmilia cyensis sp. nov., Palaeopsammia cardabiaensis sp. nov., Flabellum miriaensis sp. nov., Ballanophyllia acostae sp. nov., representatives of five genera left in open nomenclature and Caryophyllia arcotensis (Forbes, 1846), originally described from south India. The Santonian Gingin Chalk, in the northern Perth Basin, Western Australia has yielded the scleractinian corals Ceratotrochus ginginensis (Etheridge 1913), originally assigned to Coelosmilia and Caryophyllia arcotensis (Forbes, 1846), holdfast structures that probably supported octocorals and the poriferans, Peronidella(?) globosa (Etheridge 1913) and Pachyteichisma corrugatus sp. nov. Mckenziephyllia accordensis gen. et sp. nov. is described as the first scleractinian coral (Faviidae) from the Eromanga Basin. It comes from the Albian Allaru Formation in the Barcaldine district of central Queensland. Purisiphonia clarkei Bowerbank, 1869 is noted from the Aptian Wallumbilla Formation as the only known poriferan in the Surat and Eromanga basins

    Geology and Devonian rugose corals of 'Pandanus Creek', North Queensland.

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    Quaternary

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    Despite their limited economic utility, Queensland\u27s Quaternary deposits have attracted considerable attention. This is because studies of these deposits could shed light on processes and mechanisms of past periods of climate change, and therefore are particularly pertinent in contemporary debates on human impacts, future climate change and environmental fluctuation

    Heliolitine tabulate corals from Late Ordovician and possibly early Silurian allochthonous limestones in the Broken River Province, Queensland, Australia

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    Coral faunas of Late Ordovician (Ashgill) and possibly early Silurian age are present in allochthonous limestone blocks incorporated in debris flow deposits in the Broken River Province of north Queensland. The limestones occur in the Carriers Well Formation and Crooked Creek Conglomerate, which now lie within structurally deformed fault slices, and are evidence of the existence of a former carbonate platform of this age situated to the west. The fauna from the Carriers Well Formation includes 15 taxa belonging to the heliolitine coral families Heliolitidae, Pseudoplasmoporidae, Plasmoporidae, Plasmoporellidae and Sibiriolitidae. New taxa present are Wairunalites greeni gen. et sp. nov. and Plasmoporella marginata sp. nov. The fauna includes other species belonging to Heliolites, Plasmoporella and Sibiriolites in common with Late Ordovician faunas of New South Wales, central Asia and northern China. A limestone block in the Crooked Creek Conglomerate contains a few non-diagnostic heliolitine corals, together with rugosan, favositine and halysitine corals similar to those in the blocks of the Carriers Well Formation, but it also contains several alveolitine tabulates suggesting a possible early Silurian age

    Middle devonian rugose corals from the fanning river group, north Queensland, Australia

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    Rich coral faunas occur within a major transgressional-regressional cycle of latest Eifelian to Givetian age at the base of the Burdekin Basin, north Queensland. This sequence is represented by the tripartite Fanning River Group, with the initial Big Bend Arkose comprising non-marine to near-shore siliciclastic deposits, followed by the predominantly carbonate Burdekin Formation developed in shallow shelf environments, and at the top, the Cultivation Gully Formation of sandstones and shales representing the concluding regressive phase. Thirty-three species and subspecies of rugose corals are described from the Fanning River Group including the following 11 new taxa: Lekanophyllum fultum zonophylloides subsp. nov., L. hillae sp. nov., Centristela speciosa sp. nov., Endophyllum columna giganteum subsp. nov., Grypophyllum crassum sp. nov., Sunophyllum simplex sp. nov., S. proteum sp. nov., Charactophyllum (Charactophyllum) burdekinense sp. nov., Temnophyllum (Temnophyllum) etheridgei sp. nov., Chostophyllum minus sp. nov., and Planetophyllum succinctum sp. nov. Three coral faunas are recognized and form the biostratigraphic framework for regional correlation of the Group. The lower coral fauna, Charactophyllum-Sunophyllum fauna, is of latest Eifelian to early Givetian age. This is succeeded by the Aphyllum salmoni fauna of early to middle Givetian age. The upper is the Endophyllum columna of middle to late Givetian age. Occurrences of Sunophyllum, Stringophyllum, Temnophyllum, Chostopbyllum, Charactophyllum, Ch. (Spinophyllum) and Centristela in the Fanning River Group suggest correlation with coral faunas of similar age from south China, central Asia, Europe and northwestern Canada
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