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EEG Mind Anxiety Examination Using Cross Multi-Domain Feature Groups of Well-designed Online connectivity Community and also Time-Frequency Capabilities.
BACKGROUND The localization of origins of premature ventricular contraction (PVC) is the key factor for the success of ablation of ventricular arrhythmias. Existing methods rely heavily on manual extraction of PVC beats, which limits their application to the automatic PVC recognition from long-term data recorded by ECG monitors before and during operation. Besides, researches identifying PVC sources in the whole ventricle have not been reported. OBJECTIVE The purpose of this study was to validate the feasibility of localization of origins of PVC in the whole ventricle and to explore an automatic algorithm for recognition of PVC beat based on long-term 12-lead ECG. METHODS This study included 249 patients with spontaneous PVCs or pacing-induced PVCs. A novel algorithm was used to automatically extract PVC beats from massive original ECG data which were collected by different acquisition devices. After clustering and labelling, 374 sample groups, with each containing dozens to hundreds of PVC beats, formed the the 11 regions in the whole ventricle. Owing to the high accuracy of PVC beat recognition and the capability to target the potential PVC origins in multi regions, it is expected to be a predominant technique being used in clinical settings to automatically analyze huge ECG data before and during operation so as to replace the tedious manual identification. © 2020 Institute of Physics and Engineering in Medicine.Employing high resolution hard x-ray photoemission spectroscopy, we investigate the electronic structure of an exotic Fe-based superconductor, CaFe2As2, which exhibits rich temperature pressure phase diagram and dichotomy on achieving superconductivity on application of pressure. The experimental valence band spectra exhibit significant differences for experiments at different surface sensitivities. We discover that the change in angle between light polarization and surface normal leads to similar orbital selective spectral response suggesting requirement of different methodology to probe the surface-bulk differences. Thus, the final state effects of the core level spectroscopy has been exploited to reveal the depth-resolved information. Strong features related to plasmon excitations have been observed in various core level spectra. Ca 2p spectra exhibit evidence of significant hybridization with the conduction electrons, and distinct features corresponding to the surface and bulk electronic structures while As core levels remain unaffected. The depth-resolved Fe 2p spectra at different temperatures exhibit interesting features suggesting structural anomaly may be a bulk property. All these results reveal complexity in the hybridization physics between Fe, As and Ca states presumably leading to exoticity in this material. © 2020 IOP Publishing Ltd.An extracellular matrix (ECM) mimicking architecture was introduced with gelatin glycosaminoglycans like hyaluronic acid and chondroitin sulfate and a triterpenoid using Asiatic acid; possessing biodegradable and biocompatible properties which mark the functionality for the treatment of second-degree burn wounds. In the present work, a foam-based scaffold was fabricated and sterilized with gamma radiation of 2.5Mrad dose. The scaffolds were characterized for morphology, swelling, degradation behavior, the release of bioactive components, ATR-FTIR, mechanical, thermal properties and compared with control. The in-vitro cytocompatibility of the developed scaffold was studied with L929 mouse fibroblast cells and human mesenchymal stem cells based on deoxyribonucleic acid and lactate dehydrogenase assay. Muramyl dipeptide mw Additionally, the developed scaffold was evaluated for its biocompatibility on the Wistar rat to assess any toxicity induced to the animal-based on blood biochemistry and histopathology analysis. Finally, we assessed the efficacy of developed foam scaffolds on the second-degree burn wound-induced Wistar rat with scaffold alone and scaffold seeded with human bone-marrow-derived Mesenchymal stem cells in wound healing study for 28 days. The wound contraction assay, histopathology, Immunohistochemistry analysis, and pro-healing marker quantification and pro-inflammatory markers like TNF-α and MMP-2 were carried out and compared with the commercially available wound dressing. The results revealed that foam-based ECM mimic was cytocompatible, biocompatible and biodegradable in 18+3 days in in-vivo conditions and the scaffold fostered the process of healing of second degree burn within 28 days of treatment. The obtained result proved that the scaffold has a potential for clinical settings in second-degree burn wounds treatment. © 2020 IOP Publishing Ltd.Doubling the perovskite cell (double perovskite) has been found to open new possibilities for engineering functional materials, magnetic materials in particular. This route should be applicable to the antiperovskite (aPV) class. In the pnictide based double aPV (2aPV) class introduced here magnetism is very rare, and we address them as new topological materials, possibly with thermoelectric interest. We have found that the 2aPV supercell provides a systematically larger band gap that can serve to inhibit bulk conductivity, and also large spin-orbit coupling (SOC) for band inversion. We present examples from a broad study of double antiperovskites focusing on the X$_6$AA$'$B$_2$ configuration, where X is the alkaline earth element and A and B are the group 5A pnictogens. We find that an ``extended s'' state at the valence band minimum, described alternatively as a cation valence state or a modulated interstitial planewave state, plays a crucial role in both topological and thermoelectric properties. Several of these compounds may house topological phases, while transport calculations indicate they may also find themselves useful in thermoelectric applications. © 2020 IOP Publishing Ltd.Materials based on the cubic perovskite unit cell continue to provide the basis for technologically important materials with two notable recent examples being lead based relaxor piezoelectrics and lead based organic-inorganic halide photovoltaics. While these materials carry considerable disorder owing to site substitution in relaxors and molecular vibrations in the organic-inorganics, much of the understanding of these materials derives from the initial classic work on lattice vibrations in SrTiO$_3$ performed by Prof. R. A. Cowley applying both theory and neutron scattering experiments at Chalk River Laboratories. Neutron scattering continues to play an important role in understanding lattice vibrations in perovskites owing to the cross section and also the appropriate energy resolution achievable with current neutron instrumentation. We discuss the dynamics that drive the phase transitions in the relaxors and organic-inorganic lead halides as probed through neutron scattering and compare the dynamics to those phase transitions that derive from a ``central peak" and also a soft mode.
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