249 research outputs found

    Agglutinated foraminifera from the Turonian–Coniacian boundary interval in Europe – paleoenvironmental remarks and stratigraphy

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    Agglutinated foraminiferal assemblages of the Turonian–Coniacian from the GSSP (Global Boundary Stratotype Section and Point) of Salzgitter–Salder (Subhercynian Cretaceous Basin, Germany) and other sections, including Bielefeld–Ostwestfalendamm (MĂŒnsterland Cretaceous Basin, Germany) and the Dover–Langdon Stairs (Anglo-Paris Basin, England), from the temperate European shelf realm were studied in order to collect additional stratigraphic and paleoenvironmental information. Stable carbon isotopes were measured for the Bielefeld–Ostwestfalendamm section to establish a reliable stratigraphic correlation with other sections. Highly diverse agglutinated foraminiferal assemblages were obtained from sections in the German basins, whereas the fauna from Dover is less rich in taxa and less abundant. In the German basinal sections, a morphogroup analysis of agglutinated foraminifera and the calculated diversities imply normal marine settings and oligotrophic to mesotrophic bottom-water conditions. Furthermore, acmes of agglutinated foraminifera correlate between different sections and can be used for paleoenvironmental analysis. Three acmes of the species Ammolagena contorta are recorded for the Turonian–Coniacian (perplexus to lower striatoconcentricus zones, lower scupini Zone, and hannovrensis Zone) and likely imply a shift to more oligotrophic bottom-water conditions. In the upper scupini Zone below the Turonian–Coniacian boundary, an acme of Bulbobaculites problematicus likely indicates enhanced nutrient availability. In general, agglutinated foraminiferal morphogroups display a gradual shift from Turonian oligotrophic environments towards more mesotrophic conditions in the latest Turonian and Coniacian

    Agglutinated foraminifera from the Turonian–Coniacian boundary interval in Europe – paleoenvironmental remarks and stratigraphy

    Get PDF
    Agglutinated foraminiferal assemblages of the Turonian–Coniacian from the GSSP (Global Boundary Stratotype Section and Point) of Salzgitter–Salder (Subhercynian Cretaceous Basin, Germany) and other sections, including Bielefeld–Ostwestfalendamm (MĂŒnsterland Cretaceous Basin, Germany) and the Dover–Langdon Stairs (Anglo-Paris Basin, England), from the temperate European shelf realm were studied in order to collect additional stratigraphic and paleoenvironmental information. Stable carbon isotopes were measured for the Bielefeld–Ostwestfalendamm section to establish a reliable stratigraphic correlation with other sections. Highly diverse agglutinated foraminiferal assemblages were obtained from sections in the German basins, whereas the fauna from Dover is less rich in taxa and less abundant. In the German basinal sections, a morphogroup analysis of agglutinated foraminifera and the calculated diversities imply normal marine settings and oligotrophic to mesotrophic bottom-water conditions. Furthermore, acmes of agglutinated foraminifera correlate between different sections and can be used for paleoenvironmental analysis. Three acmes of the species Ammolagena contorta are recorded for the Turonian–Coniacian (perplexus to lower striatoconcentricus zones, lower scupini Zone, and hannovrensis Zone) and likely imply a shift to more oligotrophic bottom-water conditions. In the upper scupini Zone below the Turonian–Coniacian boundary, an acme of Bulbobaculites problematicus likely indicates enhanced nutrient availability. In general, agglutinated foraminiferal morphogroups display a gradual shift from Turonian oligotrophic environments towards more mesotrophic conditions in the latest Turonian and Coniacian.</p

    Increasing Dominance - the Role of Advertising, Pricing and Product Design

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    Despite the empirical relevance of advertising strategies in concentrated markets, the economics literature is largely silent on the effect of persuasive advertising strategies on pricing, market structure and increasing (or decreasing) dominance. In a simple model of persuasive advertising and pricing with differentiated goods, we analyze the interdependencies between ex-ante asymmetries in consumer appeal, advertising and prices. Products with larger initial appeal to consumers will be advertised more heavily but priced at a higher level - that is, advertising and price discounts are strategic substitutes for products with asymmetric initial appeal. We find that the escalating effect of advertising dominates the moderating effect of pricing so that post-competition market shares are more asymmetric than pre-competition differences in consumer appeal. We further find that collusive advertising (but competitive pricing) generates the same market outcomes, and that network effects lead to even more extreme market outcomes, both directly and via the effect on advertising

    Perfil epidemiolĂłgico da sĂ­filis materna e congĂȘnita em florianĂłpolis, 2016-2017 / Epidemiological profile of maternal and congenital syphilis in florianĂłpolis, 2016-2017

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    Objetivo: Descrever o perfil da sĂ­filis materna e congĂȘnita no municĂ­pio de FlorianĂłpolis, nos anos de 2016 e 2017. MĂ©todos: Trata-se de um estudo transversal, descritivo e retrospectivo com anĂĄlise de dados secundĂĄrios da sĂ­filis congĂȘnita em FlorianĂłpolis, SC, nos anos de 2016 e 2017. Foram coletados dados de duas fontes: dados das fichas de notificação de sĂ­filis congĂȘnita do municĂ­pio e dados do AmbulatĂłrio de Pediatria do Hospital UniversitĂĄrio da regiĂŁo. Os resultados foram apresentados em frequĂȘncias relativas e absolutas e analisados no software Stata 12. Resultados: No perĂ­odo de estudo, foram notificados 129 casos de sĂ­filis congĂȘnita no municĂ­pio de FlorianĂłpolis e 24 recĂ©m-nascidos com suspeita e/ou diagnĂłstico de sĂ­filis no HU. Constatou-se que o perfil das mĂŁes envolvia mulheres jovens (mĂ©dia 24 anos), brancas (65,9%), que realizaram o prĂ©-natal (81,4%) e com tratamento da sĂ­filis inadequado (58,9%). A maioria dos parceiros nĂŁo realizou o tratamento (65,1%). Com relação ao desfecho, em 12,5% da amostra observou-se aborto ou natimorto. Quanto aos neonatos, maior proporção era do sexo feminino (47,3%), de cor da pele branca (49,2%) e pertencia ao Distrito SanitĂĄrio (DS) Continente. ConclusĂ”es: O perfil encontrado permite o planejamento de estratĂ©gias mais efetivas. O quadro de reemergĂȘncia da sĂ­filis congĂȘnita deve ser analisado dentro do contexto das desigualdades e vulnerabilidade em saĂșde, como forma de garantir açÔes de promoção, proteção e prevenção Ă  saĂșde das mĂŁes. 
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