Dual Single-Atomic Ni-N and Fe-N Sites Constructing Janus Hollow Graphene for Selective Oxygen Electrocatalysis.

Nitrogen-coordinated metal single atoms in carbon have aroused extensive interest recently and have been growing as an active research frontier in a wide range of key renewable energy reactions and devices. Herein, a step-by-step self-assembly strategy is developed to allocate nickel (Ni) and iron (Fe) single atoms respectively on the inner and outer walls of graphene hollow nanospheres (GHSs), realizing separate-sided different single-atom functionalization of hollow graphene. The Ni or Fe single atom is demonstrated to be coordinated with four N atoms via the formation of a Ni-N or Fe-N planar configuration.

Effect of the use of stabilization splint on masticatory muscle activities in TMD patients with centric relation-maximum intercuspation discrepancy and absence of anterior/lateral guidance.

: To assess the masticatory muscle activities in patients with temporomandibular disorders (TMD) with centric relation (CR)-maximum intercuspation (MI) discrepancy and absence of anterior/lateral guidance by electromyography (EMG).: Forty-six patients with TMD and 34 controls underwent clinical evaluations and EMG recordings at baseline. Twenty-three patients and 17 controls wore a stabilization splint.

Hierarchically Porous Co/Co M (M = P, N) as an Efficient Mott-Schottky Electrocatalyst for Oxygen Evolution in Rechargeable Zn-Air Batteries.

Tailoring composition and morphology of electrocatalysts is of great importance in improving their catalytic performance. Herein, a salt-templated strategy is proposed to construct novel multicomponent Co/Co M (M = P, N) hybrids with outstanding electrocatalytic performance for the oxygen evolution reaction (OER). The obtained Co/Co M hybrids present porous sheet-like architecture consisting of many hierarchical secondary building-units.

Effect of visual method vs plaque disclosure in enhancing oral hygiene in adolescents and young adults: a single-blind randomized controlled trial.

Introduction: Enamel demineralization and gingival inflammation are the most prevalent consequences of biofilm formation in orthodontics. Our hypothesis was that educating patients about the severe consequences of biofilm accumulation could enhance their oral hygiene while wearing fixed appliances.

Methods: This study was designed as a randomized controlled 4-arm parallel trial.