The development of a stable and efficient Oxygen Reduction Reaction (ORR) electrocatalysts with high methanol tolerance is crucial for Direct Methanol Fuel Cells (DMFCs). Herein, triphenylphosphine (PPh3)-ligated gold nanoclusters complexes (AuNCs), Au101(PPh3)21Cl5, Au9(PPh3)8(NO3)3, Au1(PPh3)Cl supported on reduced graphene oxide (rGO) have been explored as tolerant ORR electrocatalysts. Elec...

This study investigates the use of DC sputtering, physical vapor deposition as a facile method for creating ultralow loading, Au/C electrodes in detection As (III) water. The sputtered nanofilm on carbon papers, substantially reduces amount Au consumed per electrode, <10 μg cm−2, compared to wire, foil, or screen-printed electrodes. Linear stripping voltammetry (LSV) was chosen analytical simpl...

In this report, we describe the preparation and electrochemical characterization of a Pt electrocatalyst, which was synthesized from hexachloroplatinic acid, using the incipient wetness impregnation method. This carbon mesoporous materials (Pt-CMMs) electrocatalyst was used for catalyzing the oxidation of methanol and its oxygen-reduction reaction. The electrocatalytic oxidation of methanol was...

BACKGROUND This study tested the ability of sequential shocks delivered through dual-current pathways to lower the atrial defibrillation threshold (ADFT) compared with a biphasic shock through a standard single-current pathway. METHODS AND RESULTS Electrodes were positioned in the right atrial appendage (RA), left subclavian vein (LSV), proximal coronary sinus (CSos), and distal coronary sinu...

In the frame of the European Space Agency (ESA) project called ‘‘Biology and Physics in Space”, the returning satellite, Foton-M2, carried an open-to-space exposure platform outside of the satellite body, called as BIOPAN-5, loaded with exo-biological experiments and facilities for radiation dosimetry (RADO). One of the RADO experiments was dedicated to the detection of the primary galactic cos...

Several strategies for mapping ventricular outflow tract tachycardia have been reported as useful indices for differentiating between those originating from the right and the left side. Recently, tissue tracking imaging (TTI) has been demonstrated as a novel non-invasive modality for identifying the origin of outflow tract tachycardias. Tissue tracking imaging is an ultrasonographic technique t...

The observed red shift z might be composed by the expansion $$z_\mathrm{C}$$ and an additional frequency $$z_\mathrm{S}$$ , towards or blue, considering extended theories of electromagnetism (ETE). Indeed, massive photon theories—the has a real mass as in de Broglie–Proca theory effective standard-model extension, based on Lorentz–Poincaré symmetry violation (LSV)—or nonlinear may induce cosmol...

In this article, a novel Co3O4@TiO2 composite is synthesized by applying two-step methods. ZIF-67 and used as template for the synthesis of composite. The designed using effective photocatalytic properties Co3O4 TiO2. resulting supposed to offer superior compared their counterparts. characterized powder X-ray diffraction (PXRD), Brunauer–Emmet–Teller (BET), atomic force microscopy (AFM), scanni...

a r t i c l e i n f o Polarization curves from microbial fuel cells (MFCs) often show an unexpectedly large drop in voltage with increased current densities, leading to a phenomenon in the power density curve referred to as " power overshoot ". Linear sweep voltammetry (LSV, 1 mV s − 1) and variable external resistances (at fixed intervals of 20 min) over a single fed-batch cycle in an MFC both...

We study the influence of the junction size in ferromagnet (FM)/semiconductor (SC) contacts on four-terminal nonlocal spin signals in SC-based lateral spin-valve (LSV) structures. When we use FM/Ge Schottky-tunnel junctions with relatively low resistance-area products, the magnitude of the nonlocal spin signal depends clearly on the junction size, indicating the presence of the spin absorption ...