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• Simple strategy to prepare efficient electrocatalysts for alkaline HER. • Acceleration of HER kinetics on molybdenum carbide by introducing Ru components. • The synergistic effect between the introduced Ru components and molybdenum carbide. • Decrease of water dissociation energy barrier and weakening of adsorption of OH. Hydrogen evolution reaction (HER) under alkaline media plays a pivotal role in industrial electrocatalytic hydrogen production but even the platinum-based electrocatalysts suffer from high overpotential and low kinetics due to the high energy barrier of water dissociation. Here, by employing in-situ produced graphitic carbon nitride (g-C 3 N 4) as template to induce the formation of a lamellar structure, we reported evenly dispersed Ru-doped Mo 2 C nanoparticles on ultrathin nitrogen-doped carbon nanosheets (Ru-Mo 2 C/CN) as a highly efficient alkaline HER electrocatalyst. The optimal Ru-Mo 2 C/CN displays a remarkable activity with a low overpotential of only 34 mV to afford 10 mA cm−2 and good stability of more than 30 h, which is much better than that of commercial Pt/C and recently reported electrocatalysts in the landmark literatures. Density functional theory (DFT) calculations show that the introduced Ru dopant on Mo 2 C significantly reduce the water dissociation energy barrier of HER and inhibit the competitive adsorption between H* and OH* on the surrounding Mo sites. This work highlights a simple yet effective strategy for designing electrocatalysts with excellent performance of hydrogen evolution reaction in alkaline media. [ABSTRACT FROM AUTHOR]

• Children with BECTS showed altered functional connectivity. • Abnormal functional connectivity is language-specific. • Functional connectivity correlates of IQ. Previous studies have demonstrated that language impairments are frequently observed in patients with benign epilepsy with centrotemporal spikes (BECTS). However, how BECTS affects language processing in the Chinese population remains unclear. With the use of functional magnetic resonance imaging (fMRI) in an overt picture-naming task, the present study examined functional connectivity in 27 children with BECTS and 26 healthy controls. The results indicated that children with BECTS showed altered functional connectivity associated with speech production between the left precuneus and the right cerebellum, between the right precuneus and the bilateral thalamus and the left superior temporal gyrus, between the right cuneus and the right postcentral gyrus and the right inferior parietal lobule, and between the right cerebellum and right middle frontal gyrus. Collectively, the findings in this study demonstrate the abnormal functional connectivity basis of speech production in Chinese children with BECTS, providing clues to understanding the brain mechanisms of language-related network in patients with BECTS. [ABSTRACT FROM AUTHOR]