Abstract The performance of alkaline fuel cells is severely limited by substandard anion exchange membranes (AEMs) due to the lower ionic conductivity compared proton membranes. AEMs can be effectively improved regulating microphase structure, but it still cannot meet practical use requirements. Here, enhanced microphase‐separated structures are constructed cooperativity highly hydrophilic dual cations and hydrophobic fluorinated side chains. Meanwhile, introduction O enhances flexibility...

A high-density sulfonic acid-grafted COF was designed and synthesised with a high intrinsic proton conductivity (1.52 × 10 −4 S cm −1 at 120 °C). Further incorporation of protic ionic liquid into the highly improved its to 2.21 −3 °C.

Without insight into the correlation between structure and properties, anion exchange membranes (AEMs) for fuel cells are developed usually using empirical trial error method or simulation methods. Here, a virtual module compound enumeration screening (V-MCES) approach, which does not require establishment of expensive training databases can search chemical space containing more than 4.2×105 candidates was proposed. The accuracy V-MCES model considerably improved when combined with...

The artificial intelligence – aided analysis and prediction the performance of alkaline anion exchange membranes for fuel cells are reported.

The chemical stability of anion exchange membranes (AEMs) greatly affects their practical applications in alkaline membrane fuel cells. Here, highly conductive and dimensionally stable AEMs based on a copolymer with triphenylmethane backbone (without aryl ether linkages) were prepared via Friedel–Crafts polycondensation. as-prepared showed high hydroxide conductivity (124.2 mS cm–1 at 80 °C) good 2 M KOH solution 60 °C. Furthermore, the ion capacity (IEC: 2.17 mmol g–1) displayed mechanical...

The gas permeability of the catalyst layer was increased by 130% after crosslinking due to high free volume.

With the requirements for food safety and quality, there has been increasing attention on intelligent packaging, especially pH-responsive packaging. However, toxicity of indicators vulnerability composite films to leakage tend change composition endanger human health. In this study, 2-allyoxy-1-hydroxy-anthraquinone (AhAQ), a plant dye that was modified from alizarin (AI), grafted onto film (AhAQF) via click polymerization. The obtained AhAQF shows color in response ammonia vapor exhibits...

Abstract Background Although previous studies have found that parenting style significantly predicts emotional and behavioral problems (EBPs) among Chinese adolescents, the mechanism between different styles EBPs requires in-depth investigation. In our study, we aimed to investigate mediating effect of resilience, a positive psychological characteristic, adolescents. Methods this cross-sectional used multistage stratified cluster random sampling method collect data in Shenyang, Liaoning...

Introduction Adolescent suicide is a prevalent issue globally, with various factors contributing to this phenomenon. This study aimed investigate these and their interrelationships better understand the causes of adolescent provide evidence for its prevention. Methods conducted among middle school students in Liaoning Province, China, from April May 2016, A cross-sectional survey was administered 1,028 aged 10–19, using instruments such as Behavior Questionnaire-Revised (SBQ-R), Children's...

The change in chemical or physical properties of materials composed repeated methylene units with odd even numbers linkages is a well-documented phenomenon organic chemistry and materials...

Traditional Chinese Medicine (TCM) has some advantages, such as a multi-component, multi-target, and overall action, which makes the research on compatibility of TCM formula key difficult point. On contrary, network pharmacology (NP) uses high-throughput screening, computer simulation, database retrieval to reveal drug–gene–target–disease interaction network, predict mechanism action drugs through relationships, evaluate efficacy adverse reactions drugs, thereby determining with high...

Abstract Background To examine whether the levels of aggressive behaviors and other individual contextual variables differ between left-behind adolescents (LBA) not (NLBA) explore associations aggression constructs among them. Methods A cross-sectional study was conducted 4530 school aged 9–18 years in north south China were randomly selected. The behavior, personality family classroom environment compared LBA NLBA also associated factors aggression. Results total scores 6.33 ± 6.35 (Mean...

In this study, a superhydrophobic composite hollow fiber membrane consisting of fluorinated silicification layer (fSiO2) upon poly(vinylidene fluoride) (PVDF) substrate was developed via in situ integrated with surface hydrophobic modification for bromine resources recovery from brine distillation (MD). The re-entrant hierarchical structure established silicification, after which (1H,1H,2H,2H-heptadecafluorodecyl) silane introduced to transfer the property be by reducing energy long chains....

Unintentional injuries among children and adolescents are a major public health problem worldwide. These not only have negative effects on children's physiology psychology, but also bring huge economic losses social burdens to families society. the leading cause of disability death Chinese adolescents, left-behind (LBC) more prone experience unintentional injury. The purpose this study was evaluate type incidence injury explore influences personal environmental factors by comparing...

In this work, a thiol-ene coupling reaction was employed to prepare the semi-interpenetrating polymer network AEMs. The obtained QP-1/2 membrane exhibits high hydroxide conductivity (162.5 mS cm-1 at 80 °C) with relatively lower swelling ratio, demonstrating its mechanical strength of 42 MPa. This is noteworthy for improved alkaline stability, as effectively limits attack hydroxide. Even after being treated in 2 M NaOH °C 600 h, 82.5% maintained. H2/O2 fuel cell displays peak power density...

Abstract Without insight into the correlation between structure and properties, anion exchange membranes (AEMs) for fuel cells are developed usually using empirical trial error method or simulation methods. Here, a virtual module compound enumeration screening (V‐MCES) approach, which does not require establishment of expensive training databases can search chemical space containing more than 4.2×10 5 candidates was proposed. The accuracy V‐MCES model considerably improved when combined with...

Diffusion models (DMs) have recently gained attention with state-of-the-art performance in text-to-image synthesis. Abiding by the tradition deep learning, DMs are trained and evaluated on images fixed sizes. However, users demanding for various specific sizes aspect ratio. This paper focuses adapting diffusion to handle such variety while maintaining visual fidelity. First we observe that, during synthesis, lower resolution suffer from incomplete object portrayal, higher exhibit...

An improved RFID tag anti-collision algorithm based on ALOHA is proposed to aim at the conflict problem in technology system. By effectively grouping tags be identified and finding out best response probability for each time slot of group, recognition reader shortened, chance reduced. Proposes a system label estimation method, realizes read-write automatic improves efficiency. Simulation results show that this paper compared with traditional dynamic frame algorithm, throughput rate...

Electrosurgical generator (ESG) is a medical equipment widely used in surgery, and its power needs to be precisely regulated achieve specific therapeutic effect. This article presents combined feedforward duty cycle predictive feedback control (FDCPFP) method, which can fast transient response load resistance variation. A small-signal model of the proposed method established, closed-loop transfer function derived judge tracking performance when changes. 200W prototype was built laboratory,...

Universal style transfer (UST) infuses styles from arbitrary reference images into content images. Existing methods, while enjoying many practical successes, are unable of explaining experimental observations, including different performances UST algorithms in preserving the spatial structure In addition, methods limited to cumbersome global controls on stylization, so that they require additional masks for desired stylization. this work, we provide a systematic Fourier analysis general...