Search

Interfacial atomic configuration plays a vital role in the structural stability and functionality of nanocomposites composed of metal nanoparticles (NPs) and two−dimensional semiconductors. In situ transmission electron microscope (TEM) provides a real−time technique to observe the interface structure at atomic resolution. Herein, we loaded bimetallic NiPt truncated octahedral NPs (TONPs) on MoS2 nanosheets and constructed a NiPt TONPs/MoS2 heterostructure. The interfacial structure evolution of NiPt TONPs on MoS2 was in situ investigated using aberration−corrected TEM. It was observed that some NiPt TONPs exhibited lattice matching with MoS2 and displayed remarkable stability under electron beam irradiation. Intriguingly, the rotation of an individual NiPt TONP can be triggered by the electron beam to match the MoS2 lattice underneath. Furthermore, the coalescence kinetics of NiPt TONPs can be quantitatively described by the relationship between neck radius (r) and time (t), expressed as rn = Kt. Our work offers a detailed analysis of the lattice alignment relationship of NiPt TONPs on MoS2, which may enlighten the design and preparation of stable bimetallic metal NPs/MoS2 heterostructures. [ABSTRACT FROM AUTHOR]

5a: The representative ALP staining images of Azo+si-glp-1r-1 and Azo+si-glp-1r-2 are the same The authors provided the raw data for validation. Retraction Note: Stem Cell Research & Therapy (2018) 9:57 https://doi.org/10.1186/s13287-... The Editors-in-Chief have retracted this article at the authors' request. Retraction Note: Azoramide, a novel regulator, favors adipogenesis against osteogenesis through inhibiting the GLP-1 receptor-PKA- -catenin pathway. [Extracted from the article]

COVID-19 mRNA vaccine-associated dermatomyositis (DM) with the anti-TIF-1y-positive case was first reported in 2021.[2] Two reports about MDA5-DM patients after mRNA or adenovirus vector COVID-19 vaccines were searched out in the PubMed, Science Direct and SCOPUS by June 2022.[[3]] We first reported an MDA5-DM with rapid progressive interstitial lung disease (RP-ILD) patient after an inactivation COVID-19 vaccine, exhibiting time course of the disease development. Dear Editor, During the epidemic of COVID-19 disease worldwide, applying COVID-19 vaccination can effectively protect humans from serious symptoms and help reduce long-term effects.[1] However, COVID-19 vaccines have been linked to some potential side effects. A case of Anti-MDA5-Positive dermatomyositis after inactivated COVID-19 vaccine. [Extracted from the article]

Metal sulfides electrodeposition in sulfur cathodes mitigates the shuttle effect of polysulfides to achieve high Coulombic efficiency in secondary metal-sulfur batteries. However, fundamental understanding of metal sulfides electrodeposition and kinetics mechanism remains limited. Here using room-temperature sodium-sulfur cells as a model system, we report a Mo5N6 cathode material that enables efficient Na2S electrodeposition to achieve an initial discharge capacity of 512 mAh g−1 at a specific current of 1 675 mA g−1, and a final discharge capacity of 186 mAh g−1 after 10,000 cycles. Combined analyses from synchrotron-based spectroscopic characterizations, electrochemical kinetics measurements and density functional theory computations confirm that the high d-band position results in a low Na2S2 dissociation free energy for Mo5N6. This promotes Na2S electrodeposition, and thereby favours long-term cell cycling performance. Incomplete conversion of sodium polysulfides represents a significant issue in room-temperature sodium-sulfur batteries. Here, the authors propose Mo5N6 as an electrocatalyst for efficient Na2S electrodeposition and improved cell cycling performances. [ABSTRACT FROM AUTHOR]