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  • Open Access

    ARTICLE

    Screening Coarctation of Aorta with Clinical and Echocardiographic Profiles in Infants: A Pilot Study

    Ruikun Zou1, Yifei Wang1,*, Chengcheng Pang2, Yunxia Sun1, Chen Chen1, Jian Zhuang3

    Congenital Heart Disease, Vol.16, No.2, pp. 159-170, 2021, DOI:10.32604/CHD.2021.015050

    Abstract Aim: To determine the profiles of clinical features including four-limb blood pressure (BP), saturations of peripheral oxygen (SpO2), and echocardiographic features in infants with coarctation of aorta (CoA) to facilitate congenital heart diseases screening. Methods: The charts of infants with CoA were retrospectively reviewed. All in-hospital infants suspected of congenital heart diseases by clinical teams were prospectively measured of four limbs BPs and SpO2 in a regional cardiac transferring center during 2013 and 2019. Echocardiography as a gold standard test was followed within 2 days after suspicion. All infants were divided into non-significant CoA group or significant CoA group based… More >

  • Open Access

    ARTICLE

    Effect of Hemodilution on Fluctuation of Cerebral Oxygen Saturation during Cardiopulmonary Bypass in Children with Cyanotic Congenital Heart Disease

    Misook Seo1, In-Kyung Song2, Hye-Mee Kwon2, Byungdoo Andrew Lee2, Won-Jung Shin2,*

    Congenital Heart Disease, Vol.16, No.2, pp. 123-136, 2021, DOI:10.32604/CHD.2021.012626

    Abstract Background: In patients with cyanotic congenital heart disease (CHD), cerebral oxygenation may be maintained by elevations in hematocrit (Hct). Hemodilution accompanying cardiopulmonary bypass (CPB), however, can disrupt cerebral oxygen balance, leading to fluctuations in cerebral oxygen saturation (ScO2). The present study investigated the effects of Hct changes on the fluctuation of ScO2 during CPB in cyanotic CHD using performance measurement (PM). Methods: Children with CHD (51 acyanotic and 46 cyanotic) who had undergone cardiac surgery using CPB were enrolled. Median performance error (MDPE), median absolute performance error (MDAPE), and wobble parameters of ScO2 were calculated before (reference value), during, and… More >

  • Open Access

    ARTICLE

    Terminal Sliding Mode Controllers for Hydraulic Turbine Governing System with Bifurcated Penstocks under Input Saturation

    Ji Liang1, Zhihuan Chen2,*, Xiaohui Yuan1,3,*, Binqiao Zhang3, Yanbin Yuan4

    CMES-Computer Modeling in Engineering & Sciences, Vol.123, No.2, pp. 603-629, 2020, DOI:10.32604/cmes.2020.09328

    Abstract Terminal sliding mode controller method is introduced to enhance the regulation performance of the hydraulic turbine governing system (HTGS). For the purpose of describing the characteristics of controlled system and deducing the control rule, a nonlinear mathematic model of hydraulic turbine governing system with bifurcated penstocks (HTGSBF) under control input saturation is established, and the input/output state linearization feedback approach is used to obtain the relationship between turbine speed and controller output. To address the control input saturation problem, an adaptive assistant system is designed to compensate for controller truncation. Numerical simulations have been conducted under fixed point stabilization and… More >

  • Open Access

    ARTICLE

    Saturation of a durum wheat genetic map and detection of QTL associated to lipoxygenase activity

    Picca1 A, P Roncallo1, A Carrera1, G Cervigni1, R. Miranda2, V Echenique1

    Phyton-International Journal of Experimental Botany, Vol.77, pp. 175-188, 2008, DOI:10.32604/phyton.2008.77.175

    Abstract The aims of this work were (1) the saturation of a linkage map of durum wheat using AFPLs and RAPDs, (2) mapping of QTL related to lipoxygenase activity and (3) estimation of its usefulness in marker-assisted selection to increase pasta colour. A mapping population of 83 recombinant lines (RILs) derived from the cross between durum wheat Kofa and UC1113 (Triticum turgidum L. var. durum) was evaluated for lipoxygenase activity during two growing seasons. It was used to generate a genetic map. Forty four AFLPs, 9 RAPDs, 2 isoenzymes and 1 storage protein were mapped onto a previous genetic map consisting… More >

  • Open Access

    ARTICLE

    An Experimental Study of Two-Phase Flow in Porous Media with Measurement of Relative Permeability

    N. Labed1, L. Bennamoun2, J.P. Fohr3

    FDMP-Fluid Dynamics & Materials Processing, Vol.8, No.4, pp. 423-436, 2012, DOI:10.3970/fdmp.2012.008.423

    Abstract Intrinsic and relative permeability are indispensable parameters for performing transfers in porous media. In this paper, the conception and ensuing exploitation of a new testing ground for measuring the relative permeability of water and nitrogen are presented. The experimental work was elaborated in the Laboratory of Thermal Studies in Poitiers, (France) where brick samples were used to verify the performance of the proposed testing strategy. The results prove the existence of several stages during the drainage and the imbibitions. In particular, the three stages observed for the case of gas permeability reduce to only two steps for liquid permeability. Comparison… More >

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