45 resultados para 12053


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Despite over three decades of legislation and initiatives designed to tackle the traditional gender divide in the science, technology and design fields, only a quarter of the registered architects in Australia are women. There are no statistics available for other design disciplines, with little known about why women choose design as a career path and who or what influences this decision. This qualitative research addresses this knowledge gap, through semi-structured in-depth interviews conducted with 19 Australian women who completed an industrial (product) design degree. Thematic analysis revealed three key themes: childhood aptitude and exposure; significant experiences and people; and design as a serendipitous choice. The findings emphasise the importance of early exposure to design as a potential career choice, highlighting the critical role played by parents, teachers, professionals and social networks.

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Aims The aim of the study was to evaluate the significance of total bilirubin, aspartate transaminase (AST), alanine transaminase and gamma-glutamyltransferase (GGT) for predicting outcome in sepsis-associated cholestasis. Methods: A retrospective cohort review of the hospital records was performed in 181 neonates admitted to the Neonatal Care Unit. A comparison was performed between subjects with low and high liver values based on cut-off values from ROC analysis. We defined poor prognosis to be when a subject had prolonged cholestasis of more than 3.5 months, developed severe sepsis, septic shock or had a fatal outcome. Results: The majority of the subjects were male (56%), preterm (56%) and had early onset sepsis (73%). The poor prognosis group had lower initial values of GGT compared with the good prognosis group (P = 0.003). Serum GGT (cut-off value of 85.5 U/L) and AST (cut-off value of 51 U/L) showed significant correlation with the outcome following multivariate analysis. The odds ratio (OR) of low GGT and high AST were OR 4.3 (95% CI:1.6 to11.8) and OR 2.9 (95% CI:1.1 to 8), respectively, for poor prognosis. In subjects with normal AST values, those with low GGT value had relative risk of 2.52 (95% CI:1.4 to 3.5) for poorer prognosis compared with those with normal or high GGT. Conclusion: Serum GGT and AST values can be used to predict the prognosis of patients with sepsis-associated cholestasis

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Aim: Decision-making in weed management involves consideration of limited budgets, long time horizons, conflicting priorities, and as a result, trade-offs. Economics provides tools that allow these issues to be addressed and is thus integral to management of the risks posed by weeds. One of the critical issues in weed risk management during the early stages of an invasion concerns feasibility of eradication. We briefly review how economics may be used in weed risk management, concentrating on this management strategy. Location: Australia. Methods: A range of innovative studies that investigate aspects of weed risk management are reviewed. We show how these could be applied to newly invading weeds, focussing on methods for investigating eradication feasibility. In particular, eradication feasibility is analysed in terms of cost and duration of an eradication programme, using a simulation model based on field-derived parameter values for chromolaena, Chromolaena odorata. Results: The duration of an eradication programme can be reduced by investing in progressively higher amounts of search effort per hectare, but increasing search area will become relatively more expensive as search effort increases. When variation in survey and control success is taken into account, increasing search effort also reduces uncertainty around the required duration of the eradication programme. Main conclusions: Economics is integral to the management of the risks posed by weeds. Decision analysis, based on economic principles, is now commonly used to tackle key issues that confront weed managers. For eradication feasibility, duration and cost of a weed eradication programme are critical components; the dimensions of both factors can usefully be estimated through simulation. © 2013 John Wiley & Sons Ltd.

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The synthesis, thermal and emission properties of an electrophosphorescent platinum(II) metallopolyyne polymer consisting of 9-butylcarbazole-2,7-diyl spacer P1 are described. The optical and electronic properties of P1 are compared to their molecular diplatinum(II) and digold(I) model complexes. The photophysical properties of P1 are somehow analogous to its 2,7-fluorene-linked congener but differs significantly from that for the 3,6-carbazole derivative. Its optical band gap is notably reduced as compared to that for the 3,6-carbazole analog. Multi-layer polymer light-emitting diodes (PLEDs) were fabricated with P1 as the emitting layer which gave a strong green-yellow electrophosphorescence. The best PLED can reach the maximum current efficiency of 4.7 cd . A(-1) at 5 wt.-% doping level, corresponding to an external quantum efficiency of 1.5%. This represents the first literature example of efficient PLEDs exhibiting pure triplet emission under electrical excitation for metallopolyynes without the concomitant singlet emission.

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Mal-do-panamá. Moko ou murcha bacteriana. Murcha de Erwinia ou podridão mole do rizoma. Murcha abiótica. Características diferenciadoras das murchas bióticas e abióticas em bananeiras. Sintomas externos. Sintomas internos.

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While there is an acknowledgement in apology research that political apologies are highly mediated, the process of mediation itself has lacked scrutiny. This article suggests that the idea of reconstruction helps to understand how apologies are mediated and evaluated. David Cameron's apology for Bloody Sunday is examined to see how he constructs four aspects of apology: social actors, consequences, categorization, and reasons. The reconstruction of those aspects by British, Unionist, and Nationalist press along with reconstructions made by soldiers in an online forum are considered. Data analysis was informed by thematic analysis and discourse analysis which helped to explore key aspects of reconstruction and how elements of Cameron's apology are altered in subsequent mediated forms of the apology. These mediated reconstructions of the apology allowed their authors to evaluate the apology in different ways. Thus, in this article, it is suggested that the evaluation of the apology by different groups is preceded by a reconstruction of it in accordance with rhetorical goals. This illuminates the process of mediation and helps to understand divergent responses to political apologies.

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1917/08/16 (Numéro 12053).

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Le risque de chute est une problématique bien présente chez les personnes âgées ou ayant une atteinte neurologique et reflète un déficit des mécanismes neuronaux assurant l’équilibre. De précédentes études démontrent que l’intégration des informations sensorielles est essentielle au contrôle de l’équilibre et que l’inhibition présynaptique (IP) serait un mécanisme important dans le contrôle de la transmission sensorielle. Ainsi, le but de cette étude était d’identifier la contribution du mécanisme d’IP à l’induction de réponses posturales efficaces suite à une perturbation d’équilibre. Notre hypothèse est qu’une diminution d’IP contribuerait à l’induction des ces réponses, en augmentant l’influence de la rétroaction sensorielle sur les réseaux de neurones spinaux. Afin de démontrer cette hypothèse, nous avons d’abord évalué l’excitabilité spinale pendant les perturbations vers l’avant ou vers l’arrière, à l’aide du réflexe H. L’excitabilité spinale était modulée selon la direction de la perturbation et cette modulation survenait dès 75 ou 100 ms (p<0.05), soit avant l’induction des réactions posturales. Puis, à l’aide de techniques plus précises de convergence spinale, nous avons démontré que l’IP était diminuée dès 75 et 100 ms dans les deux directions, suggérant que la transmission des informations sensorielles vers la moelle épinière est accrue juste avant le déclenchement de la réponse posturale. Cette étude met en évidence un mécanisme-clé permettant d’augmenter la rétroaction des informations sensorielles nécessaires à l’induction de réponses posturales appropriées. L’évaluation de ce mécanisme pourrait mener à une meilleure identification des individus à risque de chute.

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La autora explica en qué consiste el proyecto ríos. Se trata de un proyecto de educación ambiental que tiene como objetivo principal proporcionar a los ciudadanos en general unas herramientas que ayuden a conocer mejor nuestros ríos y a valorar su importancia medioambiental, social y económica. Quiere ayudar a detectar los problemas que padecen como consecuencia de la actividad humana y dar recursos para mejorar su estado. El proyecto consiste en unas visitas al río, en las cuales se hace un pequeño estudio del ecosistema fluvial.