446 research outputs found

    Hydatid disease - the 'water lily' sign

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    A 30-year-old black woman with hydatid liver disease and HIV infection (World Health Organization stage III) presented with symptoms of heart failure. Echocardiography showed global impairment of the left ventricular function (ejection fraction 40%) and no evidence of hydatid heart disease. Magnetic resonance imaging confirmed the presence of large hydatid cysts in the right lobe of the liver (12 x 12 x 11 cm), and in the lesser peritoneal sac (8 x 8 x 9 cm), the latter showing a ruptured germinal membrane, demonstrating the ‘water lily appearance’ (Fig. 1)

    De relatie tussen het bezoek aan strandbaden en weersfactoren

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    Grond onder de voeten : Karl Barths scheppingsleer in KD III/1 opnieuw gelezen

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    Kooi, C. van der [Promotor]Egmond, A. van [Copromotor

    Late-onset pulmonary arterial hypertension after successful early arterial switch surgery for simple transposition of the great arteries

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    Pulmonary arterial hypertension rarely develops in patients with simple transposition of the great arteries who undergo neonatal surgical correction. We describe a young male patient who was diagnosed with severe pulmonary arterial hypertension 14 years after neonatal arterial switch surgery. The relevant literature is briefly reviewed. Clinicians should be aware of this rare, late, and potentially life-threatening condition. Continued long-term follow up of these patients should be provided. Early diagnosis and treatment with combination therapy may improve outcome

    Optimizing the economic operation of a power station

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    Irrigation-induced river salinization: Five major irrigated basins in the arid zone

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    Water resources development / Irrigation management / River basin development / Arid lands / Water quality / Irrigation effects / Drainage / Water allocation / Water use / Pollution control / Legislation / Salinity control / Central Asia / USA / India / Australia / Egypt / Aral Basin / Colorado Basin / Indus Basin / Murray-Darling Basin / Nile Basin

    Interceptor drainage modelling to manage high groundwater table on the Abyek Plain, Iran

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    High groundwater tables and soil salinity are a serious threat to agricultural areas, especially on the Abyek Plain, Iran. An interceptor drainage system was installed to lower the groundwater head and control soil salinity. Simulation is an appropriate approach to investigate possible groundwater behaviour in future conditions and to explore suitable designs for implementation. Ninety‐nine observation wells were installed around the interceptor drainage system in the Abyek Plain to monitor groundwater movement and salinity changes. Groundwater table fluctuation was measured monthly for 3 years from December 2010 until January 2014. A MODFLOW model was calibrated for the study area using the data measured through the observation wells. Assessment of the measured values indicated that the groundwater head was lowered within the 3 years due to the installation of the system. A calibrated model was applied to predict the future conditions of groundwater levels and suggest proper designs. Groundwater level drawdowns were predicted at approximately 1.3 and 1.5 m for August 2018 and August 2025, respectively. The results also revealed that with the installation of additional parallel interceptor drainage at a distance of 1000 m from the existing drainage, the groundwater table could be lowered in a large area of the plain

    The pyeTribe: Simultaneous eyetracking for economic games

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    The recent introduction of inexpensive eye-trackers has opened up a wealth of opportunities for researchers to study attention in interactive tasks. No software package was previously available to help researchers exploit those opportunities. We created “the pyeTribe”, a software package that offers, among others, the following features: First, a communication platform between many eye-trackers to allow simultaneous recording of multiple participants. Second, the simultaneous calibration of multiple eye-trackers without the experimenter’s supervision. Third, data collection restricted to periods of interest, thus reducing the volume of data and easing analysis. We used a standard economic game (the public goods game) to examine data quality and demonstrate the potential of our software package. Moreover, we conducted a modeling analysis, which illustrates how combining process and behavioral data can improve models of human decision making behavior in social situations. Our software is open source and can thus be used and improved by others
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