Hunan University

Experimental and numerical investigation of the effects of engine oil on combustion and particulate formation in a renewable bioethanol-gasoline engine

Ethanol is a promising biomass-derived renewable biofuel for internal combustion engines, offering substantial potential for carbon-emission reduction and knock suppression. This study combines experiments and numerical simulations to investigate the effects of engine oil on etha...

Self‐Assembly and Molecular Recognition by Synthetic Receptors at the Oil‐Water Interface in Aqueous Microdroplets

ABSTRACT Aqueous microdroplets in a bulk fluorous oil medium confer unique behavior on self‐folding water‐soluble synthetic receptors (deep cavitands). The lipophilic, yet water‐soluble cavitands self‐assemble at the water‐oil interface, coating the surface of the microdroplet ra...

Torsional behavior of reinforced slag-based geopolymer concrete columns under compression

Although extensive research has been conducted on geopolymer concrete (GPC) at material level, its structural behavior under complex stress states remains inadequately understood, especially under combined compression and torsion. In this study, monotonic torsion tests under comb...

Candidate Intermediary Node Deployment Under the Linear Threshold Model: A Branch-and-Benders-Cut Approach

This paper studies candidate intermediary node deployment for influence diffusion under the linear threshold model (LTM). Given fixed diffusion sources, target nodes, and a budget, the decision maker selects candidate intermediary nodes to maximize the expected total weight of ac...

Exploring baryon semileptonic decays through polarization and entanglement

Abstract The unitarity of the Cabibbo–Kobayashi–Maskawa (CKM) matrix is a cornerstone of the standard model (SM). Precise tests of this unitarity require independent determinations of its elements, such as | V us |, which governs the transition between strange and up quarks. Curr...

Organic Activatable Afterglow Imaging Probes: From Molecular Design to Biomedical Translation

ABSTRACT Organic activatable afterglow probes have developed into a distinct class of optical imaging tools. They allow for a temporal separation between signal emission and external irradiation, thereby enabling high‐contrast imaging. We have summarized the latest advances in th...

Gating hole back-transfer with molecular spacers programs rapid micropollutant decontamination

Precise control of oxygen activation to generate reactive oxygen species (ROS) for on-demand micropollutant removal remains challenging. Herein, we develop a bottom-up molecular approach to systematically tailor dithienyl spacers (alkene/alkyl/benzene), from model fragments, amor...

Over 7500 Cycles Achieved in Platinum‐Group‐Metal‐Free Ni–H 2 Battery Through Reversible Hydrogen Spillover

ABSTRACT Traditional Ni–H 2 batteries employing platinum‐group metal (PGM) catalysts exhibit ultralong lifetimes (> 10 000 cycles), yet comparable durability has not been achieved in recently developed PGM‐free systems, mainly due to sluggish hydrogen evolution and oxidation reac...

Feedback Configurations in Interpreting Teaching: Understanding Teachers’ Feedback Belief‐Practice Tensions

ABSTRACT Teachers’ beliefs are noted not to always align with their practices, and such mismatches may in fact reflect teachers’ situated responses to contextual demands. Existing studies have largely focused on corrective feedback in second language teaching and typically examin...

Anomalous deformation behavior and underlying mechanisms of Mg-Nd-Zr-Ca alloy during low-temperature hot compression

The anomalous deformation behavior of a Mg-1.8Nd-0.4Zr-0.3Ca (wt%) alloy during hot compression at low temperatures (180–330 °C) and strain rates of 0.001–10 s⁻¹ was systematically investigated. The flow stress exhibits an abnormal increase with decreasing strain rate at 180 °C,...

Thermodynamic Control of MnO 2 /Mn 2+ Redox Chemistry in Aqueous Batteries

ABSTRACT The MnO 2 /Mn 2+ redox chemistry is attractive for energy‐dense aqueous batteries, offering high theoretical capacity and favorable redox potential. However, the practical reversibility of this chemistry is severely limited by competing reaction pathways, including Mn 3+...

Achieving simultaneous strength-ductility-corrosion optimization of solid-state additive friction stir deposited superlight Mg-Li alloy by a hybrid high flow rate Argon/CO₂ shielding atmosphere

High-performance Mg–Li alloys were fabricated via solid-state additive friction stir deposition under a mixed Ar/liquid CO₂ atmosphere, which addresses severe oxidation and unfavorable thermal cycling issues during additive manufacturing. Benefiting from optimized microstructures...

Multi-objective and cross-scale inverse design of temperature-control materials via physics-constrained machine learning

Abstract Temperature-control materials, notably composite phase-change materials (CPCMs), show great potential for the thermal management of next-generation power electronics. However, the synergistic optimization of multiple performance metrics still relies heavily on Edisonian...

Global and regional brain-age gaps in primary trigeminal neuralgia: a cross-sectional structural MRI study of 133 anatomical structures

Primary trigeminal neuralgia (TN) is a severe craniofacial neuropathic pain disorder. Quantitative magnetic resonance imaging (MRI) studies suggest that TN-related alterations may extend beyond the trigeminal pathways. The brain-age gap (BAG) is MRI-predicted brain age minus chro...

Inferring tumor dependency maps from histopathology through imputed transcriptomics

Gene dependency maps from cancer cell lines define context-specific essential genes, but comparable dependencies in tumors remain largely inaccessible. This gap limits the identification of actionable therapeutic vulnerabilities. Here we present a two-stage deep learning framewor...

Dimension-DependentPhotoinduced Oxygen Passivationin Tin-Based Perovskites

Abstract All-inorganic lead-free tin-based perovskites are ideal candidate materials for lead-based perovskites due to their environmentally friendly nature. However, their atmospheric instability remains a significant hurdle for practical applications. In this study, zero-dimens...

A Fail-Safe Topology Optimization Method for Fiber-Reinforced Composite Structures Under Dynamic Loads

A fail-safe topology optimization method for fiber-reinforced composite structures under dynamic loads is proposed to achieve the concurrent optimization of structural topology and fiber orientations, as well as enhance the structural redundancy subject to damage cracks of fiber-...

Beyond Tool Rationality: Contextualizing AR Picture Book Acceptance in Parent–Child Shared Reading

Augmented reality (AR) picture books are increasingly used in family learning and parent–child shared reading, but their adoption within families remains underexplored. Based on 439 valid responses from Chinese families, structural equation modeling examined adoption determinants...

Shenfu Injection attenuates isoproterenol-induced heart failure partly through modulation of the TNF-α/TNFR1/NF-κB signaling pathway

Shenfu injection (SFI) is widely used for heart failure (HF), but its cardioprotective mechanism remains incompletely understood. In this study, an isoproterenol-induced HF rat model, H9c2 cell injury model, network pharmacology, GEO analysis, molecular docking, and molecular dyn...

Unsteady aerodynamics and underbody flow characteristics of high-speed trains with bogie covers at 400 km/h

Although high-speed train (HST) bogie covers effectively reduce aerodynamic drag, they raise safety concerns due to lift-induced oscillations caused by unsteady underbody flow. This study investigates the effects of various bogie covering structures on aerodynamic load pulsations...