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Search Results: 1 - 10 of 582104 matches for " Carel D. A. "
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Rhinosurgery in children: developmental and surgical aspects of the growing nose
Verwoerd, Carel D. A.,Verwoerd-Verhoef, Henriette L.
GMS Current Topics in Otorhinolaryngology, Head and Neck Surgery , 2010,
Abstract: The anatomy of the nasal skeleton in newborns and adults are not alike. The complete cartilaginous framework of the neonatal nose becomes partly and gradually ossified during the years of growth and is more vulnerable to trauma in that period. Injury in early youth may have large consequences for development and may result in a nasal deformity which will increase during growth and reach its peak during and after the adolescent growth spurt. To understand more of the underlying problems of nasal malformations and their surgical treatment (septorhinoplasty) these items became the focus of multiple animal studies in the last 40 years. The effects of surgery on the nasal septum varied considerably, seemingly depending on which experimental animal was used. In review, however, the very different techniques of the experimental surgery might be even more influential in this respect. Study of one of the larger series of experiments in young rabbits comprised skeletal measurements with statistical analysis, and microscopic observations of the tissues. The behaviour of hyaline cartilage of the human nose appeared to be comparable to that of other mammals. Cartilage, although resilient, can be easily fractured whereas its tendency to integrated healing is very low, even when the perichondrium has been saved. Also surgical procedures – like in septoplasty – may result in growth disturbances of the nasal skeleton like recurrent deviations or duplicature. Loss of cartilage, as might occur after a septum abscess, is never completely restored despite some cartilage regeneration. In this article experimental studies are reviewed and compared. Still there remains a lack of consensus in the literature concerning the developmental effects of rhinosurgry in children. Based on their observations in animals and a few clinical studies, mostly with small numbers of patients but with a long follow-up, the authors have compiled a list of guidelines to be considered before starting to perform surgery on the growing midface in children.
Forest Fruit Production Is Higher on Sumatra Than on Borneo
Serge A. Wich, Erin R. Vogel, Michael D. Larsen, Gabriella Fredriksson, Mark Leighton, Carey P. Yeager, Francis Q. Brearley, Carel P. van Schaik, Andrew J. Marshall
PLOS ONE , 2011, DOI: 10.1371/journal.pone.0021278
Abstract: Background Various studies have shown that the population densities of a number of forest vertebrates, such as orangutans, are higher on Sumatra than Borneo, and that several species exhibit smaller body sizes on Borneo than Sumatra and mainland Southeast Asia. It has been suggested that differences in forest fruit productivity between the islands can explain these patterns. Here we present a large-scale comparison of forest fruit production between the islands to test this hypothesis. Methodology/Principal Findings Data on fruit production were collated from Sumatran and Bornean sites. At six sites we assessed fruit production in three forest types: riverine, peat swamp and dryland forests. We compared fruit production using time-series models during different periods of overall fruit production and in different tree size classes. We examined overall island differences and differences specifically for fruiting period and tree size class. The results of these analyses indicate that overall the Sumatran forests are more productive than those on Borneo. This difference remains when each of the three forest types (dryland, riverine, and peat) are examined separately. The difference also holds over most tree sizes and fruiting periods. Conclusions/Significance Our results provide strong support for the hypothesis that forest fruit productivity is higher on Sumatra than Borneo. This difference is most likely the result of the overall younger and more volcanic soils on Sumatra than Borneo. These results contribute to our understanding of the determinants of faunal density and the evolution of body size on both islands.
Análise argumentativa de uma fábula de La Fontaine
Carel, Marion
Letras de Hoje , 2008,
Abstract: N o possui resumo
Análise argumentativa do léxico: o exemplo da palavra 'medo'
Carel, Marion
Letras de Hoje , 2009,
Abstract: Neste artigo, Marion Carel apresenta uma análise argumentativa da palavra medo fundamentada na Teoria dos Blocos Semanticos, momento anual da Semantica Argumentativa, desenvolvida por Carel e Ducrot.
A polifonia linguística =Linguistic polyphony
Carel, Marion
Letras de Hoje , 2011,
Abstract: Situando-se no contexto de estudos sobre a polifonia, no qual distingue os trabalhos de Oswald Ducrot (polifonia semantica), e os de Mikhail Bakhtin (polifonia intertextual), o artigo prop e-se a tratar da polifonia criada por Oswald Ducrot. Discute, ent o, se a pressuposi o é realmente fonte de polifonia, concluindo que existem duas formas de pressuposi o: a argumentativa e a polif nica. Analisa igualmente a no o de “responsabilidade enunciativa”, vendo-a como uma “multiplicidade de responsabilidades”, inferindo daí o papel e a natureza das vozes mobilizadas pela polifonia semantica. Apresenta finalmente sua Teoria Argumentativa da Polifonia que desenvolve com Oswald Ducrot e Alfredo Lescano, inspirada tanto nos conceitos de história e discurso de Benveniste quanto na polifonia de Ducrot. Com isso, distingue a polifonia linguística da polifonia intertextual.
Niederlande-Deutschland: Eine Momentaufnahme
Horstmeier, Carel
Zeitenblicke , 2004,
A remark on a conjecture of Hain and Looijenga
Carel Faber
Mathematics , 2008,
Abstract: After recalling the various tautological algebras of the moduli space of curves and some of its partial compactifications and stating several well-known results and conjectures concerning these algebras, we prove that the natural extension to the case of pointed curves of a 1996 conjecture of Hain and Looijenga is true if and only if two of the stated conjectures are true.
Algorithms for computing intersection numbers on moduli spaces of curves, with an application to the class of the locus of Jacobians
Carel Faber
Mathematics , 1997,
Abstract: We describe algorithms for computing the intersection numbers of divisors and of Chern classes of the Hodge bundle on the moduli spaces of stable pointed curves. We also discuss the implementations and the results obtained. There are several applications. We discuss one in particular: the calculation of the projection in the tautological ring of the moduli space of abelian varieties of the class of the locus of Jacobians.
Intersection-theoretical computations on \Mgbar
Carel Faber
Mathematics , 1995,
Abstract: We determine necessary conditions for ample divisors in arbitrary genus as well as for very ample divisors in genus 2 and 3. We also compute the intersection numbers $\lambda^9$ and $\lambda_{g-1}^3$ in genus 4. The latter number is relevant for counting curves of higher genus on manifolds, cf. the recent work of Bershadsky et al.
Comparing Pandemic to Seasonal Influenza Mortality: Moderate Impact Overall but High Mortality in Young Children
Cees C. van den Wijngaard, Liselotte van Asten, Marion P. G. Koopmans, Wilfrid van Pelt, Nico J. D. Nagelkerke, Cornelia C. H. Wielders, Alies van Lier, Wim van der Hoek, Adam Meijer,A. Donker, Frederika Dijkstra, Carel Harmsen, Marianne A. B. van der Sande, Mirjam Kretzschmar
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0031197
Abstract: Background We assessed the severity of the 2009 influenza pandemic by comparing pandemic mortality to seasonal influenza mortality. However, reported pandemic deaths were laboratory-confirmed – and thus an underestimation – whereas seasonal influenza mortality is often more inclusively estimated. For a valid comparison, our study used the same statistical methodology and data types to estimate pandemic and seasonal influenza mortality. Methods and Findings We used data on all-cause mortality (1999–2010, 100% coverage, 16.5 million Dutch population) and influenza-like-illness (ILI) incidence (0.8% coverage). Data was aggregated by week and age category. Using generalized estimating equation regression models, we attributed mortality to influenza by associating mortality with ILI-incidence, while adjusting for annual shifts in association. We also adjusted for respiratory syncytial virus, hot/cold weather, other seasonal factors and autocorrelation. For the 2009 pandemic season, we estimated 612 (range 266–958) influenza-attributed deaths; for seasonal influenza 1,956 (range 0–3,990). 15,845 years-of-life-lost were estimated for the pandemic; for an average seasonal epidemic 17,908. For 0–4 yrs of age the number of influenza-attributed deaths during the pandemic were higher than in any seasonal epidemic; 77 deaths (range 61–93) compared to 16 deaths (range 0–45). The ≥75 yrs of age showed a far below average number of deaths. Using pneumonia/influenza and respiratory/cardiovascular instead of all-cause deaths consistently resulted in relatively low total pandemic mortality, combined with high impact in the youngest age category. Conclusion The pandemic had an overall moderate impact on mortality compared to 10 preceding seasonal epidemics, with higher mortality in young children and low mortality in the elderly. This resulted in a total number of pandemic deaths far below the average for seasonal influenza, and a total number of years-of-life-lost somewhat below average. Comparing pandemic and seasonal influenza mortality as in our study will help assessing the worldwide impact of the 2009 pandemic.
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