[Study on the effect and mechanism of hepatitis B virus X protein transactivates gene 4 in HepG2 cell apoptosis].

To investigate the effect and mechanism of XTP4 gene in apoptotic hepatoblastoma HepG2 cell line. HepG2 cells were transiently transfected with small interfering RNA of XTP4 genes, plasmid pcDNA3.1/myc-His(-) A-XTP4, and hepatitis B virus X protein transactivated x gene 4 (HBX protein trans-activate gene4, XTP4) and their respective negative controls.

Magnetism and magnetocaloric effect in TlCo Ni S (0 [Formula: see text] x [Formula: see text] 0.05).

We have investigated the magnetism and magnetocaloric effect of TlCo Ni S (0 [Formula: see text] x [Formula: see text] 0.05). TlCoS and TlCoNiS are ferromagnetically ordered below 153 K and 142 K with saturated moment 0.

Facile Synthesis of GNPs@NiS@MoS Composites with Hierarchical Structures for Microwave Absorption.

Graphene-based powder absorbers have been used to attain excellent microwave absorption. However, it is not clear if inferior microwave absorption by pure graphene materials can be attributed to impedance mismatching or inadequate attenuation capability. In this comparative study, we focus on these aspects.

The role of mid-gap phonon modes in thermal transport of transition metal dichalcogenides.

We present a comprehensive theoretical study on thermal transport in monolayer transition metal dichalcogenides MX (M: Mo, W; X: S, Se) with various sample sizes. An unusually high anharmonic scattering strength is found in MoSe compared to the other three family members, which arises from its unique phonon band dispersion, specifically the mid-frequency phonon branches associated with the vibrations of Se atoms of MoSe. The mid-frequency modes almost completely span the gap that exists between the high-frequency phonon branches and the acoustic ones, allowing the former to readily decay into the latter.

Difunctionalization of Alkenylpyridine -Oxides by the Tandem Addition/Boekelheide Rearrangement.

A convenient and efficient approach for the difunctionalization of alkenylpyridine -oxides through the tandem addition/Boekelheide rearrangement has been developed. The C-O and C-X (S, O, Cl) bonds are constructed simultaneously at the α- and β-positions under mild reaction conditions in 100% atom economy, which complements previously reported α- or β-functionalizations.

Boosting Sodium Storage of FeS/MoS Composite via Heterointerface Engineering.

Improving the cycling stability of metal sulfide-based anode materials at high rate is of great significance for advanced sodium ion batteries. However, the sluggish reaction kinetics is a big obstacle for the development of high-performance sodium storage electrodes. Herein, we have rationally engineered the heterointerface by designing the FeS/MoS heterostructure with abundant "ion reservoir" to endow the electrode with excellent cycling stability and rate capability, which is proved by a series of in and ex situ electrochemical investigations.

Vertical Stacking of Copper Sulfide Nanoparticles and Molybdenum Sulfide Nanosheets for Enhanced Nonlinear Absorption.

The construction of p-n junctions is necessitated by applications which require effective charge separation. Here, a novel heterostructure (HS) of molybdenum sulfide (MoS) and copper sulfide (CuS) was synthesized by chemical vapor deposition, with CuS nanoparticles vertically stacked on a MoS nanosheet. A well-defined epitaxial relationship between MoS and CuS is established, although the corresponding lattice mismatch is as large as 20%.

Transport and Photoelectric Properties of 2D Silicene/MX (M = Mo, W; X = S, Se) Heterostructures.

The transport and photoelectric properties of four two-dimensional (2D) silicene/MX (M = Mo, W; X = S, Se) heterostructures have been investigated by employing density functional theory, nonequilibrium Green's function, and Keldysh nonequilibrium Green's function methods. The stabilities of silicene (SiE) are obviously improved after being placed on the MX (M = Mo, W; X = S, Se) substrates. In particular, the conductivities of SiE/MX are enhanced compared with free-standing SiE and MX.

A New Perspective on Dry Eye Classification: Proposal by the Asia Dry Eye Society.

The 2017 consensus report of the Asia Dry Eye Society (ADES) on the definition and diagnosis of dry eyes described dry eye disease as "Dry eye is a multifactorial disease characterized by unstable tear film causing a variety of symptoms and/or visual impairment, potentially accompanied by ocular surface damage." The report emphasized the instability of tear film and the importance of visual dysfunction in association with dry eyes, highlighting the importance of the evaluation of tear film stability. This report also discussed the concept of tear film-oriented therapy, which stemmed from the definition, and which is centered on provision of insufficient components in each tear film layer and ocular surface epithelium.

Synthesis of single-phase CuCoNiS for high-performance supercapacitors.

Developing safe, efficient and environment-friendly energy storage systems continues to inspire researchers to synthesize new electrode materials. Doping or substituting host material by some guest elements has been regarded as an effective way to improve the performance of supercapacitors. In this work, single-phase CuCoNiS materials were synthesized by a facile two-step hydrothermal method, where Co in CuCoS was substituted by Ni.

Unidirectional Spin-Orbit Interaction Induced by the Line Defect in Monolayer Transition Metal Dichalcogenides for High-Performance Devices.

Spin-orbit (SO) interaction is an indispensable element in the field of spintronics for effectively manipulating the spin of carriers. However, in crystalline solids, the momentum-dependent SO effective magnetic field generally results in spin randomization by a process known as the Dyakonov-Perel spin relaxation, leading to the loss of spin information. To overcome this obstacle, the persistent spin helix (PSH) state with a unidirectional SO field was proposed but difficult to achieve in real materials.

Colorimetric assay of acetylcholinesterase inhibitor tacrine based on MoO nanoparticles as peroxidase mimetics.

Molybdenum dichalcogenides MoX (X=S, Se) have been found to possess intrinsic peroxidase-like activity. However, molybdenum oxides (MoO) as peroxidase mimetics have not been exploited yet. Herein, MoO nanoparticles were synthesized by a simple hydrothermal method and found to possess the peroxidase-like activity for the first time.

Reversible direct-indirect band transition in alloying TMDs heterostructures via band engineering.

Alloying is a feasible and practical strategy to tune the electronic properties of 2D layered semiconductors. Here, based on first-principles calculations and analysis, we demonstrate band engineering through alloying W into a prototype MoS/MoSe heterostructure. Especially, when the W compositions x  >  0.

Electrochemical exfoliation of ultrathin ternary molybdenum sulfoselenide nanosheets to boost the energy-efficient hydrogen evolution reaction.

Developing low-cost and highly efficient transition metal dichalcogenides as alternative electrocatalysts has become an urgent need for the hydrogen evolution reaction (HER). However, the inert basal planes of transition metal dichalcogenides severely suppress their practical applications. Herein, we developed ultrathin ternary molybdenum sulfoselenide (MoSeS) nanosheets by using the cathodic electrochemical exfoliation approach in non-aqueous electrolytes.

Evolution of Hollow CuInS Nanododecahedrons via Kirkendall Effect Driven by Cation Exchange for Efficient Solar Water Splitting.

Hollow-structured semiconductor nanocrystals (NCs) have aroused tremendous research interest because of their compelling structure-related properties that can facilitate the development of many important applications including solar water splitting. However, the creation of multicomponent semiconductor NCs (such as I-III-VI and I-II-IV-VI semiconductors) possessing a hollow architecture still remains a great challenge because of the difficulty in balancing the reactivities of multiple precursors. In this study, we report an effective strategy to prepare hollow CuInS nanododecahedrons featuring high uniformity in morphology and composition, based on the Kirkendall effect driven by the cation exchange between Cu and In using CuS nanododecahedrons as templates.

The Composition-Dependent Photoluminescence Properties of Non-Stoichiometric ZnAgInS Nanocrystals.

A facile hot injection approach to synthesize high-quality non-stoichiometric ZnAgInS nanocrystals (NCs) in the size range of 2.8-3.1 nm was presented.

Propose two-dimensional SbTeX (X = S, Se) with isotropic electron mobility and remarkable visible-light response.

Two-dimensional (2D) crystals are emerging materials for nanoelectronics, and computationally identifying novel 2D materials with distinct electronic and optical properties furnishes a vital first step for future photovoltaic technology. Herein, based on the density functional theory and Keldysh nonequilibrium Green's function formalism, we reported new members of the family of 2D Group V-VI compounds, i.e.

A New Segmented Virus Associated with Human Febrile Illness in China.

Background: In 2017, surveillance for tickborne diseases in China led to the identification of a patient who presented to a hospital in Inner Mongolia with a febrile illness that had an unknown cause. The clinical manifestation of the illness was similar to that of tickborne encephalitis virus (TBEV) infection, but neither TBEV RNA nor antibodies against the virus were detected.

Methods: We obtained a blood specimen from the index patient and attempted to isolate and identify a causative pathogen, using genome sequence analysis and electron microscopy.

Structure of the Au Ag (S-Adm) Nanocluster and Its Application for Photocatalytic Degradation of Organic Pollutants.

Ligands play an important role in determining the atomic arrangement within the metal nanoclusters. Here, we report a new nanocluster [Au Ag (S-Adm) ] protected by bulky adamantanethiol ligands which was obtained through a one-pot synthesis. The total structure of [Au Ag (S-Adm) ] comprises an Au Ag icosahedral core, three Au (SR) units, and one AgS staple motif in contrast to the 15-atom bipyramidal core previously seen in [Au Ag (SR) ].

One-Step Growth of Spatially Graded MoW S Monolayers with a Wide Span in Composition (from x = 0 to 1) at a Large Scale.

Alloying is an effective way to modulate material's properties. In particular, graded alloying within a single domain of two-dimensional transition-metal chalcogenide (2D-TMC) is of great technological importance, for example, for achieving band gap modulations. Here, we report a facile method to grow gradient alloying of MoW S monolayers with large domain sizes and high crystal qualities via the chemical vapor deposition technique.

In Situ Fabrication of Carbon-Encapsulated FeX (X = S, Se) for Enhanced Sodium Storage.

Sodium-ion batteries (SIBs) have been regarded as a promising alternative to lithium-ion batteries due to the natural abundance of sodium in the earth's crust. In our work, fusiform FeX@C (X = S, Se) composites were obtained via a one-step pyrolysis strategy applied to SIB anode materials. The formed carbon skeleton could prevent the FeX nanoparticles from agglomeration and stabilize the interface of Fe/NaX generated in the redox reactions.

Correction: Controlled synthesis of bifunctional particle-like Mo/Mn-NiS/NF electrocatalyst for highly efficient overall water splitting.

Correction for 'Controlled synthesis of bifunctional particle-like Mo/Mn-NiS/NF electrocatalyst for highly efficient overall water splitting' by Yaqiong Gong et al., Dalton Trans., 2019, DOI: 10.

Loss of Super-Enhancer-Regulated circRNA Nfix Induces Cardiac Regeneration After Myocardial Infarction in Adult Mice.

Background: circRNAs (circular RNAs) are emerging as powerful regulators of cardiac development and disease, but their roles in cardiac regeneration are still unknown. This study used superenhancers to distinguish key circRNAs in the regulation of cardiac regeneration and explored the mechanisms underlying circRNA functions.

Methods: We used integrated bioinformatics analysis of RNA sequencing data and superenhancer catalogs to identify superenhancer-associated circRNAs.

Controlled synthesis of bifunctional particle-like Mo/Mn-NiS/NF electrocatalyst for highly efficient overall water splitting.

Heteroatom-doping engineering has been recognized as an effective strategy to improve the activity and stability of electrocatalytic materials. Herein, we fabricated a bimetallic Mo/Mn codoped three-phase nickel sulfide on Ni foam, with Mo/Mn-NixSy/NF successfully synthesized via hydrothermal synthesis and calcination. In order to better explore the codoping effect of Mo/Mn, we also synthesised Ni3S2/NF, NiS@Ni0.