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https://www.selleckchem.com/ Transition metal phosphides (TMP)-based oxygen evolution reaction (OER) catalysts constructed by interface engineering strategy have a broad prospect due to their low cost and good performance. Herein, a novel CeO2/NiCoP nanoarray with intimate phosphide (NiCoP)-oxide (CeO2) interface was developed via in situ generation on nickel foam (NF). This structure is conducive to increasing active sites and accelerating charge transfer, and may be conducive to regulating electronic structure and adsorption energy. As expected, optimal 1.4-CeO2/NiCoP/NF delivers a low overpotential of 249 mV at the current density of 10 mA cm-2 with a Tafel slope of 77.2 mV dec-1. CeO2/NiCoP/NF boasts one of the best OER catalytic materials among recently reported phosphides (TMP)-based OER catalysts and composite catalysts involving CeO2. This work provides an effective strategy for the construction of hetero-structure with CeO2 with oxygen vacancies to improve the OER performance of phosphides. This work explored the reliability of using points on the heart sounds envelope as indicators of opening and closure of the aortic valve (AVO, AVC) for measuring the pre-ejection period (PEP) and left ventricular ejection time (LVET). 36 phonocardiograms (PCGs) from healthy and cardiovascular disease subjects were denoised using single-channel independent component analysis (SCICA) and, from the Hilbert envelopes, the positions of the S1 and S2 peaks were detected (pS1, pS2). Complementary, the positions of the local maxima of S1 and S2 (mS1, mS2) and the points surrounding pS1 and pS2 (tS1, tS2) were obtained. Finally, the reliability of these points (and the corresponding PEP and LVET intervals) was evaluated by calculation of three error indexes (ePEP, eLVET and score) and by comparison to reference annotations given by echocardiography, this using the Bland-Altman analysis and the paired T-test. Results indicated that, from a total of 920 and 341 heartbeats in the he

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