Nanoscale Indentation-Induced Crystal Plasticity in CrCoNi Medium-Entropy Alloys Containing Short-Range Order.

CrCoNi medium-entropy alloys (MEAs), characterised by their high configurational entropies, have become a research hotspot in materials science. Recent studies have indicated that MEAs exhibit short-range order (SRO), which affects their deformation mechanisms. In this study, the micro-mechanisms of SRO within the framework of mesoscale continuum mechanics are mathematically evaluated using an advanced, non-local crystal plasticity constitutive framework.

Anion regulation for surface passivation enables ultrahigh-stability perovskite nanocrystals.

All-inorganic perovskite CsPbBr3 nanocrystals (NCs) display high photoluminescence quantum yield and narrow emission, which show great potential application in optoelectronic devices. However, the poor environment stability of NCs will hinder their practical application. Herein, a series of ionic liquids with different anions (BF4-, Br-, and NO3-) were used as a sole capping ligand to synthesize NCs.

Does climate policy uncertainty drive the extreme spillovers of carbon-energy-shipping markets?

In addressing the ramifications of climate change, the shipping industry, reliant on energy, has been integrated into the Emissions Trading System (ETS). This study utilizes the quantile connectedness model to investigate the information spillover mechanisms and extreme time-varying interconnections among carbon, energy, and shipping markets. Whether climate policy uncertainty drives the extreme interconnections is also discussed during both pre- and post-Paris Agreement periods, by using GARCH-MIDAS model.

Unraveling Meso-Substituent Steric Effects on the Mechanism of Hydrogen Evolution Reaction in Ni Porphyrin Hydrides Using DFT Method.

Substituents at the site of metalloporphyrins profoundly influence the hydrogen evolution reaction (HER) mechanism. This study employs density functional theory (DFT) to computationally analyze Ni-porphyrin and its hydrides derived from tetrakis(pentafluorophenyl)porphyrin molecules, presenting stereoisomers in or -positions. The results reveal that the spatial resistance effect of -substituted groups at the and positions induces significant changes in Ni-N bond lengths, angles, and reaction dynamics.

Light-Up Aptameric Sensor of Serotonin for Point-of-Care Use.

Serotonin is a vital neurotransmitter for regulating organism functions, and its abnormal level indicates multiple diseases. Aptamer has emerged as an innovative tool for serotonin analysis very recently; however, the current aptameric sensing platform lacks design flexibility and portability. Here, we introduce a light-up aptameric sensor using designer DNA molecules with tunable affinity and dynamic response and achieve mobile phone-based detection for point-of-care use.

Experimental and Theoretical Study on Crown Ether-Appended-Fe(III) Porphyrin Complexes and Catalytic Oxidation Cyclohexene with O.

Modifying non-precious metal porphyrins at the -position is sufficient to further improve the ability to activate O and the selectivity of the corresponding redox products. In this study, a crown ether-appended Fe(III) porphyrin complex (FeTCPCl) was formed by replacing Fe(III) porphyrin (FeTPPCl) at the -position. The reactions of FeTPPCl and FeTCPCl catalysed by O oxidation of cyclohexene under different conditions were studied, and three main products, 2-cyclohexen-1-ol (), 2-cyclohexen-1-one (), and 7-oxabicyclo[4.

High-fidelity ATP imaging an isothermal cascade catalytic amplifier.

Artificial catalytic DNA circuits that can identify, transduce and amplify the biomolecule of interest have supplemented a powerful toolkit for visualizing various biomolecules in cancer cells. However, the non-specific response in normal tissues and the low abundance of analytes hamper their extensive biosensing and biomedicine applications. Herein, by combining tumor-responsive MnO nanoparticles with a specific stimuli-activated cascade DNA amplifier, we propose a multiply guaranteed and amplified ATP-sensing platform the successive cancer-selective probe exposure and stimulation procedures.

Monitoring hepatitis B by using point-of-care testing: biomarkers, current technologies, and perspectives.

: Liver diseases caused by hepatitis B virus (HBV) are pandemic infectious diseases that seriously endanger human health, conventional diagnosis methods can not meet the requirements in resource-limited areas. The point of acre detection methods can easily resolve those problems. Herein, we review the most recent advances in POC-based hepatitis B detection methods and present some recommendations for future development.

Progress of Stimuli-Responsive Nanoscale Metal Organic Frameworks as Controlled Drug Delivery Systems.

Background: Development of controlled drug delivery systems can improve the pharmacokinetic characteristics of drug molecules in the human body, thereby significantly improving the utilization rate of drugs and reducing toxicity and side effects caused by their high concentrations, which can occur when delivery is not controlled. Metal organic frameworks are a new class of very promising crystalline microporous materials, especially when the size is reduced to the nanometer range. Metal-organic frameworks exhibit large specific surface areas, tunable compositions, and easy functionalization.

Synthesis of porous carbon embedded with NiCo/CoNiO hybrids composites for excellent electromagnetic wave absorption performance.

A series of NiCo/CoNiO@C hybrid composites were successfully prepared by a hydrothermal method and subsequent heat-treatment process. Porous carbon was synthesized through a fabric carbonization process derived from fish skin. The micro-morphology and minor component of NiCo/CoNiO@C hybrid composites could be tuned by controlling the adjunction amount of Co and Ni.

Synthesis of a hierarchical carbon fiber@cobalt ferrite@manganese dioxide composite and its application as a microwave absorber.

In this study, a novel hierarchical carbon fiber@cobalt ferrite@manganese dioxide (CF@CoFeO@MnO) composite was facilely prepared a sol-gel method and hydrothermal reaction. The morphology, structure, chemical and element composition, crystal form, elemental binding energy, magnetic behavior and microwave absorbing performance of the composite were carefully investigated. According to its hysteresis loops, the composite exhibits a typical soft magnetic behavior, with a value of 30.

Preparation and Characterization of Epoxy Resin Filled with TiCT MXene Nanosheets with Excellent Electric Conductivity.

MXene represents new kinds of two-dimensional material transition metal carbides and/or carbonitrides, which have attracted much attention in various applications including electrochemical storage devices, catalysts, and polymer composite. Here, we report a facile method to synthesize TiCT MXene nanosheets and prepare a novel electrically conductive adhesive based on epoxy resin filled with TiCT MXene nanosheets by solution blending. The structure, morphology, and performance of TiCTx MXene nanosheets and epoxy/TiCT MXene nanosheets composite were investigated.

Covalent Bonding of Si Nanoparticles on Graphite Nanosheets as Anodes for Lithium-Ion Batteries Using Diazonium Chemistry.

Silicon/carbon (Si/C) composite has been proven to be an effective method of enhancing the electrochemical performance of Si-based anodes for lithium-ion batteries (LIBs). However, the practical application of Si/C materials in LIBs is difficult because of the weak interaction between Si and C. In this study, we applied two-step diazotization reactions to modify graphite nanosheets (GNs) and Si nanoparticles (Si NPs), yielding a stable Si-Ar-GNs composite.

A sandwich-like Si/SiC/nanographite sheet as a high performance anode for lithium-ion batteries.

Silicon/carbon (Si/C) nanocomposite anodes have attracted great interest for their use in lithium-ion batteries (LIBs). However, Si nanoparticles are difficult to stabilize on a carbon surface. Herein, we solve this stabilization problem by designing a Si/silicon carbide/nanographite sheet (Si/SiC/NanoG) nanocomposite.

Fabrication of NiFeO@carbon fiber coated with phytic acid-doped polyaniline composite and its application as an electromagnetic wave absorber.

In this work, a novel CF@NiFeO composite coated with phytic acid-doped polyaniline (CF@NiFeO@p-PANI) was facilely synthesized. First, a typical solvothermal reaction was applied to obtain the CF@NiFeO composite, and then the phytic acid-doped polyaniline was grown on the surface of the CF@NiFeO composite. The morphological structure, chemical composition, and surface functional group distribution of this hybrid were systematically evaluated.

Hierarchical FeO@carbon@MnO hybrid for electromagnetic wave absorber.

In this work, a novel FeO@C@MnO hybrid was successfully synthesized via facile method. The morphology, structure, chemical composition, magnetic behavior and EM wave absorbing performance of the hybrid were systematically investigated. Results indicate that the hybrid possesses uniform hierarchical and mesoporous structure.

[Physicochemical properties and skin penetration in vitro of total alkaloids of Sophora flavescens nanoemulsion].

The research aimed at investigating the physicochemical properties, stability and skin penetration in vitro of total alkaloids of Sophora flavescens nanoemulsion. Prepare total alkaloids of S. flavescens nanoemulsion and detect the determination of matrine and oxymatrine in the nanoemulsion using HPLC method.

[Preparation of Kushen-Dilong nanoemulsion gel and transdermal characterization in vitro].

Objective: To prepare Kushen-Dilong nanoemulsion and nanoemuls-ion gel, and investigate its content, physical and chemical properties. Their transdermal properties in vitro were studied as well.

Method: IPM acted as oil phase, EL35 as surfactant, EtOH as cosurfactant, Pheretima aqueous solution was added dropwise to the oil phase to prepare Kushen-Dilong nanoemulsion at room temperature using magnetic stirring.

Enhancement of Cerenkov luminescence imaging by dual excitation of Er(3+),Yb(3+)-doped rare-earth microparticles.

Unlabelled: Cerenkov luminescence imaging (CLI) has been successfully utilized in various fields of preclinical studies; however, CLI is challenging due to its weak luminescent intensity and insufficient penetration capability. Here, we report the design and synthesis of a type of rare-earth microparticles (REMPs), which can be dually excited by Cerenkov luminescence (CL) resulting from the decay of radionuclides to enhance CLI in terms of intensity and penetration.

Methods: Yb(3+)- and Er(3+)- codoped hexagonal NaYF4 hollow microtubes were synthesized via a hydrothermal route.

Effect of Kushen (Radix Sophorae flavescentis) extract on laryngeal neoplasm Hep2 cells.

Objective: To evaluate the effect of fermented extract of Kushen (Radix Sophorae Flavescentis) or non-fermented ESF on laryngeal neoplasms Hep2 cells.

Methods: Use 3-(4,5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay to explore the effect of fermented ESF and non-fermented ESF on Hep2 cells, and detect the mRNA and protein expression level of Bcl-2, Bax and Caspase-3 with reverse transcription polymerase chain reaction (RT-PCR) and Western blot.

Results: Both fermented ESF and non-fermented ESF could inhibit laryngeal neoplasm's Hep2 cells, but and the cells did not response to the dilution 1: 320 of fermented ESF, nor to the 1:1280 dilution of non-fermented ESF.