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Failure mechanism research and load-bearing capacity of externally prestressed composite beams with web openings
Factors associated with post-stroke readmission: a systematic review and meta analysis
Perfluoroalkyl Hybrid Ethylene Glycol Side Chains: A Solution to Water Related Challenges in n‐Type Organic Mixed Ionic‐Electronic Conductors
AbstractThe water molecule is regarded as a double‐edged sword in organic mixed ionic‐electronic conductors (OMIECs), particularly for n‐type semiconductors. On the one hand, hydration facilitates ion transport within OMIECs; on the other hand, water acts as an electron trap, capturing electrons in n‐type materials. Excessive hydration may disrupt the continuity of OMIECs crystalline domains, leading to device degradation. To address these challenges, we propose an innovative strategy by incorporating perfluoroalkyl hybridized ethylene glycol (fag) side chains into the polymer. The strong hydrophobicity of fluoroalkyl segments effectively repels water from polymer backbone, thereby reducing electron trapping. Meanwhile, the ethylene glycol components facilitate efficient ion transport. These findings are confirmed by electrochemical impedance spectroscopy (EIS) and electrochemical quartz crystal microbalance with dissipation monitoring (EQCM‐D). Additionally, the electron‐withdrawing nature of fluorine lowers the lowest unoccupied molecular orbital (LUMO) energy level, which in turn enhances stability in aqueous environments. We also discovered that the incorporation of fag side chains also promotes polymer self‐assembly and improves crystallinity. Grazing‐incidence wide‐angle X‐ray scattering (GIWAXS) reveals a face‐on/edge‐on mixed orientation in fag‐based polymers, facilitating efficient ion‐electron transport. Consequently, organic electrochemical transistors (OECTs) fabricated from fag‐based OMIECs demonstrate state‐of‐the‐art n‐type performance, achieving a µC* figure of merit of 189.78 F cm−1 V−1 s−1. Furthermore, they exhibit excellent stability, retaining 68% of their initial performance after 50 000 switching cycles in aqueous electrolyte. This study demonstrates that a rational approach to molecular design can effectively alleviate the detrimental effects of water, providing a novel strategy for the development of high‐performance and stable n‐type OMIECs.
Pharmacokinetic and phytochemical screening of Allium subhirsutum leaves for antimicrobial and anti-inflammatory properties
Comparative estimation of the spread of acute diarrhea and dengue in India using statistical mathematical and deep learning models
Author Correction: Effect of inclined magnetic field on radiative heat and mass transfer in chemically reactive hybrid nanofluid flow due to dual stretching
Exploring the role of green space in mitigating childhood opportunity across the U.S
Structural, nonlinear optical, and molecular docking studies of schiff base compounds as multi-target inhibitors of AChE, BChE, and carbonic anhydrases
White Circularly Polarized OLEDs Enabled by Orthogonal Engineering of Achiral Thermally Activated Delayed Fluorescence Emitters and Chiral Assemblies
AbstractThe development of white circularly polarized organic light‐emitting diodes (CP‐OLEDs) faces a critical challenge in simultaneously achieving high external quantum efficiency (EQE) and large dissymmetry factors (g), due to the inherent trade‐off between exciton utilization and chirality amplification. Herein, we propose an orthogonal architecture synergizing an achiral blue thermally activated delayed fluorescence (TADF) emitter with chiral orange assemblies to overcome this limitation. The chiral assemblies, featuring exceptional chiroptical activity (|gabs| = 0.95 and |glum| = 0.85), are engineered as both photon‐selective filters and emitters. When integrated with a blue TADF layer, this dual‐layer design enables 100% internal quantum efficiency through TADF‐enabled triplet harvesting and chiral amplification via selective absorption of blue photons with a specific polarization direction, generating amplified white circularly polarized electroluminescence (CPEL). The resulting white CP‐OLED (CIE: 0.31, 0.34) achieves a record |gEL| of 0.34 alongside an EQEmax of 6.3%, demonstrating the unprecedented white CP‐OLEDs when considering both EQE and gEL values. By optimizing the TADF doping ratio, a cool‐white CP‐OLED is realized with an EQE of 14.7% and |gEL| of 0.32. This work establishes a material orthogonal engineering to decouple exciton‐chirality interdependencies, opening avenues for fabricating high‐performance CPEL devices.
Enabling robots to autonomously search dynamic cluttered post-disaster environments
Vamp8 modulates cerebral ischemia-reperfusion injury via the autophagy-lysosome pathway
A green nanocomposite suppresses asphaltene precipitation in carbonates via multiscale evaluation
Anticandidal activity of greenly synthesized silver nanoparticles formulated using Alkanna tinctoria roots against multidrug resistant candidal pathogens
Nilotinib hydrochloride monohydrate solubility in supercritical carbon dioxide + cosolvent: measurements and modeling
Exploration of nonclassical symmetries and exact solutions to the (4+1)-dimensional Boiti–Leon–Manna–Pempinelli equation
Abstract This paper presents a complete nonclassical symmetry analysis of the nonlinear integrable model known as the (4 + 1)-dimensional Boiti–Leon–Manna–Pempinelli (4D-BLMP) equation. The analysis is divided into two parts. The first part involves constructing systems of nonlinear partial differential equations for the determining equations based on the dimensions of the model. Five distinct cases of these systems are examined and solutions to these systems are found, leading to the creation of various new nonclassical symmetries. The second part focuses on classifying the developed unknown functions using the constructed nonclassical symmetries and their invariant formulations. These classified functions are then applied to obtain a range of new explicit exact solutions to the model. The paper also includes a graphical analysis of the dynamical behavior of these solutions, taking into account special parameter values. The results highlight the existence of various wave structures in the 4D-BLMP equation, setting it apart from other models that lack non-singular complexiton solutions. The analysis of higher-dimensional nonlinear integrable equations is essential because such models capture complex wave phenomena arising in mathematical physics, fluid dynamics, and optical systems. In particular, understanding their exact and nonclassical solutions provides deeper insight into the underlying dynamics and supports the development of effective analytical and numerical techniques.
A body shape index modifies the association between air pollution and cardiometabolic multimorbidity
Comparative study on radiation resistance of WTaCrV high-entropy alloy and tungsten in helium-containing conditions
Abstract W and W-based high-entropy alloys are promising candidates for plasma-facing materials in fusion reactors. While irradiation studies on W have revealed a tendency for helium (He) bubble formation and radiation-induced defects, investigations of WTaCrV high-entropy alloy (HEA) have demonstrated superior radiation resistance, whether under He⁺ irradiation or heavy ion irradiation. To assess material performance under conditions relevant to fusion reactors—characterized by fast neutrons and gas production from transmutation reactions—complex irradiation environments need to be modeled. Using classical molecular dynamics simulations, we examined defect evolution in W and equimolar WTaCrV HEA with and without preexisting He atoms under overlapping displacement cascades up to 0.2 displacements per atom (dpa) at 300 K. In W, dislocation loops and large interstitial clusters formed readily, with increasing He content leading to higher dislocation densities and the formation of polygonal interstitial networks. In contrast, WTaCrV alloy exhibited strong resistance to formation of dislocation loops and large interstitial clusters but was more susceptible to bubble formation at higher He concentrations. Bubble growth was driven by helium trapping at vacancy sites and the coalescence of smaller bubbles. Larger bubbles remained stable against cascade overlap, limiting further growth by coalescence.