172,109 research outputs found

    Reply: Polycystic ovary syndromeand pregnancy

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    Sir, We thank Dr Galazis for his interest in our review (Palomba et al., 2015) and for the issues raised about the increased risk of pregnancy complications in women with polycystic ovary syndrome (PCOS). Our comprehensive review demonstrated that women with PCOS have a 2-fold increased risk of gestational diabetes mellitus (GDM) and a 3–4-fold increased risk of pregnancy-induced hypertension (PIH) and preeclampsia (PE) when compared with non-PCOS controls (Palomba et al., 2015)

    Development and implementation of a 3D numerical code for designing and predicting performances of PCM thermal energy storage systems

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    The present work is focused on the development of thermal energy storage systems (TES) based on phase changing materials (PCM), to be used as back-up devices during transient operations of small and medium scale concentrated solar plants (CSP). The development of the storage device will be performed recurring to numerical simulation and experimental testing in the laboratory. At the current stage the laboratory is being built, while the implementation of a numerical tool to simulate the behaviour of tanks with different geometries and different working materials has started. The preliminary development of the storage device is carried out by means of a 3D numerical simulation code specifically implemented in the COMSOL Multiphysics environment. The code is used to solve direct (design) and indirect (analysis) problems considering heat storage tanks with different geometries and different working materials. The geometry chosen for this preliminary analysis is the shell and tube heat exchanger, whose shell is filled with PCM and the working fluid flows on the tube side (up to 200-220°C to simulate the heat transfer fluid from the solar field). The system is designed for a heat storage capacity of 36 MJ

    An inpainting technique based on regularization to remove bleed-through from ancient documents

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    In the techniques proposed so far to remove bleed-through from digital images of ancient documents, two critical aspects are the identification of the occlusion areas, i.e. those pixels where the bleed-through pattern overlaps with the main foreground text, and the inpainting of the areas to be removed with a pattern that is in continuity with the surrounding background, often inhomogeneous due to paper texture or noise. In this paper we propose a new method for bleed-through removal that aims at solving both the aforementioned issues. The method first exploits information from the accurately registered images of the manuscript recto and verso to locate, in each side, the pixels corresponding to the interfering text, no matter if they are pure bleed-through or occlusion pixels. Then, processing separately the two sides, the identified areas are filled in by interpolating, through a suitable regularization model, the surrounding regions. We show the promising results obtained with this method on manuscripts affected by a very strong bleed-through

    Comparative studies in education in Southern Europe

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