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A Cross Attention Transformer-Mixed Feedback Video Recommendation Algorithm Based on DIEN

Computers, Materials & Continua 2025年第1期82卷 977-996页

作者： Jianwei Zhang Zhishang Zhao Zengyu Cai Yuan Feng Liang Zhu Yahui Sun College of Software engineering Zhengzhou University of Light IndustryZhengzhou450000China faculty of Information engineering Xuchang Vocational Technical CollegeXuchang461000China College of Computer Science and Technology Zhengzhou University of Light IndustryZhengzhou450000China College of Electronics and Information Zhengzhou University of Light IndustryZhengzhou450000China

The rapid development of short video platforms poses new challenges for traditional recommendation *** systems typically depend on two types of user behavior feedback to construct user interest profiles:explicit feedback(interactive behavior),which significantly influences users’short-term interests,and implicit feedback(viewing time),which substantially affects their long-term ***,the previous model fails to distinguish between these two feedback methods,leading it to predict only the overall preferences of users based on extensive historical behavior ***,it cannot differentiate between users’long-term and shortterm interests,resulting in low accuracy in describing users’interest states and predicting the evolution of their *** paper introduces a video recommendationmodel calledCAT-MFRec(CrossAttention Transformer-Mixed Feedback Recommendation)designed to differentiate between explicit and implicit user feedback within the DIEN(Deep Interest Evolution Network)*** study emphasizes the separate learning of the two types of behavioral feedback,effectively integrating them through the cross-attention ***,it leverages the long sequence dependence capabilities of Transformer technology to accurately construct user interest profiles and predict the evolution of user *** results indicate that CAT-MF Rec significantly outperforms existing recommendation methods across various performance *** advancement offers new theoretical and practical insights for the development of video recommendations,particularly in addressing complex and dynamic user behavior patterns.

关键词： Video recommendation user interest cross-attention transformer

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Fluorine-functionalized zirconium-organic cages for efficient photocatalytic oxidation of thioanisole

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Chinese chemical Letters 2025年第1期36卷 632-636页

作者： Jia-Ru Li Ning Li Li-Ling He Jun He School of chemical engineering and light industry Guangdong University of TechnologyGuangzhou 510006China School of Chemistry South China Normal UniversityGuangzhou 510006China

Zirconium-based metal-organic cages(Zr-MOCs)typically exhibit high stability,but their structural and application reports are scarce due to stringent crystallization *** have successfully fluorinated the classical Zr-MOCs(ZrT-3)for the first time,obtaining the fluorinated MOCs(ZrT-3-F).Notably,ZrT-3-F not only inherits the high stability of its parent structure,but also acts as a catalyst for the effective oxidation of benzyl thioether for the first *** reaction can reach a conversion rate of 99%in 6 h,and the selectivity reaches 95%,which far exceeds the non-fluorinated *** work proves that the specific functionalization of the classical Zr-MOCs can further expand their application potential,such as catalysis.

关键词： Ultraviolet light Fluorine Zirconium-based metal-organic cages Sulfide oxidation Multiphase photocatalysis

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Electrocatalytic cleavage of a lignin β-O-4 model compound and coupling with nitrogen-containing aromatics using Prussian blue analogue-derived nickel–cobalt spinel

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Journal of Energy Chemistry 2025年第1期100卷 628-636页

作者： Yi Qi Xueying Chen Bowen Liu Xuliang Lin Xueqing Qiu Yanlin Qin Guangdong Provincial Key Laboratory of Plant Resources Biorefinery School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 510006GuangdongChina Guangdong Provincial Laboratory of Chemistry and Fine chemical engineering Jieyang Center Jieyang 515200GuangdongChina Guangdong Basic Research Center of Excellence for Ecological Security and Green Development Guangdong University of TechnologyGuangzhou 510006GuangdongChina

Electrochemical conversion of lignin for the production of high-value heterocyclic aromatic compounds has great *** demonstrate the targeted synthesis and cation modulation of NiCo_(2)O_(4)spinel nanoboxes,synthesized via cation exchange and calcination *** catalysts exhibit excellent efficacy in the electrocatalytic conversion of lignin model compounds,specifically 2-phenoxy-1-phenylethanol,into nitrogen-containing aromatics,achieving high conversion rates and *** catalysts were synthesized via a cation exchange and calcination oxidation process,using Prussian blue nanocubes as *** porous architecture and polymetallic composition of the NiCo_(2)O_(4)spinel demonstrated superior performance in electrocatalytic oxidative coupling,achieving a 99.2 wt%conversion rate of the 2-phenoxy-1-phenylethanol with selectivities of 37.5 wt%for quinoline derivatives and 31.5 wt%for *** innovations include the development of a sustainable one-pot synthesis method for quinoline derivatives,the elucidation of a multistage reaction pathway involving CAO bond cleavage,hydroxyaldol condensation,and CAN bond formation,and a deeper mechanistic understanding derived from DFT *** work establishes a new strategy for lignin valorization,offering a sustainable route to produce high-value nitrogen-containing aromatics from renewable biomass under mild conditions,without the need for additional reagents.

关键词： Spinel Biomass valorization Electrocatalysis Lignin oxidation Coupling

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A portable and versatile fluorescent platform for high-throughput screening of toxic phosgene,diethyl chlorophosphate and volatile acyl chlorides

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Chinese chemical Letters 2025年第1期36卷 453-458页

作者： Beitong Zhu Xiaorui Yang Lirong Jiang Tianhong Chen Shuangfei Wang Lintao Zeng Guangxi Key Laboratory of Clean Pulp&Papermaking and Pollution Control School of Light Industry and Food EngineeringGuangxi UniversityNanning 530004China School of Chemistry and chemical engineering Guangxi Minzu UniversityNanning 530006China College of Chemistry Beijing Normal UniversityBeijing 100875China

Highly toxic phosgene,diethyl chlorophosphate(DCP)and volatile acyl chlorides endanger our life and public *** achieve facile sensing and discrimination of multiple target analytes,herein,we presented a single fluorescent probe(BDP-CHD)for high-throughput screening of phosgene,DCP and volatile acyl *** probe underwent a covalent cascade reaction with phosgene to form boron dipyrromethene(BODIPY)with bright green *** contrast,DCP,diphosgene and acyl chlorides can covalently assembled with the probe,giving rise to strong blue *** probe has demonstrated high-throughput detection capability,high sensitivity,fast response(within 3 s)and parts per trillion(ppt)level detection ***,a portable platform based on BDP-CHD was constructed,which has achieved high-throughput discrimination of 16 analytes through linear discriminant analysis(LDA).Moreover,a smartphone adaptable RGB recognition pattern was established for the quantitative detection of ***,this portable fluorescence sensing platform can serve as a versatile tool for rapid and high-throughput detection of toxic phosgene,DCP and volatile acyl *** proposed“one for more”strategy simplifies multi-target discrimination procedures and holds great promise for various sensing applications.

关键词： Fluorescent platform High throughput BODIPY Linear discriminant analysis Phosgene Acyl chloride Diethyl chlorophosphate

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Thermally activated delayed fluorescence enhanced by macrocyclization

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Science China Chemistry 2025年

作者： Shuo Li Chenghao Zhu Lijun Mao Xin Zhang Zecong Ye Chunju Li Da Ma School of Pharmaceutical and chemical engineering & Institute for Advanced Studies Taizhou University School of chemical engineering and light industry Guangdong University of Technology Tianjin Key Laboratory of Structure and Performance for Functional Molecules Tianjin Normal University

Thermally activated delayed fluorescence (TADF) depends on reverse intersystem crossing (RISC) from the lowest triplet to the singlet excited state. Here, a macrocyclization strategy is developed to achieve TADF emission by promoting RISC. 5-(9Hcarbazol-9-yl) isophthalonitrile, a fluorescent molecule, is coupled with 1,4-dimethoxybenzene by methylene bridges to form a macrocycle with TADF emission. Experimental results and theoretical calculation indicate that the macrocyclization strategy contributes to RISC promotion and suppression of nonradiative decay, resulting in effective TADF emission transformed from prompt fluorescence. Three TADF luminophores are cyclized with the same strategy, and an enhanced TADF emission of up to3.8 folds is observed. The marriage of macrocycle chemistry and luminescent materials will provide new guidelines for designing efficient TADF materials.

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Copper-catalyzed C–C bond cleavage coupling with C≡N bond formation toward mild synthesis of lignin-based benzonitriles

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Journal of Environmental Sciences 2025年第5期151卷 505-515页

作者： Qi Luo Shenglong Tian Qian Qiang Fei song Wentao Su Haiyan He Qingda An Changzhi Li Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials Liaoning Collaborative Innovation Center for Lignocellulosic BiorefinerySchool of Light Industry and Chemical EngineeringDalian Polytechnic UniversityDalian 116034China CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China University of Chinese Academy of Science Beijing 100049China

N-participated lignin depolymerization is of great importance for the transformation of waste lignin into value-added *** vast majority of developed strategies employ organic amines as nitrogen source,and considerablemethods rely on excessive use of strong base,which suffers severe environmental ***,benzonitrile derivatives are synthesized from oxidized ligninβ-O-4 model compounds in the presence of solid nitrogen source(NH_(4))_(2)CO_(3)under mild,base-free conditions over commercially available copper *** studies suggest the transformation undergoes a one-pot,highly coupled cascade reaction path involving oxidative C-C bond cleavage and in-situ formation of C≡N *** which,Cu(OAc)2 catalyzes the transfer of hydrogen from C_(β)(C_(β)-H)to C_(α),leading to the cleavage of C_(α)-C_(β)bonds to offer benzaldehyde derivative,this intermediate then reacts in-situ with(NH_(4))_(2)CO_(3)to afford the targeted aromatic nitrile *** iodide(TBAI),acting as a promoter,plays a key role in breaking the C_(α)-C_(β)bonds to form the intermediate benzaldehyde *** this protocol,the feasibility of the production of value-added syringonitrile from birchwood lignin has been *** transformation provides a sustainable approach to benzonitrile chemicals from renewable source of lignin.

关键词： Lignin β-O-4 model compounds Benzonitrile derivatives Copper catalyst Mild conditions

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light-controlled protein imprinted nanospheres with variable recognition specificity

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Chinese chemical Letters 2025年第2期36卷 173-178页

作者： Mingqi Wang Shixin Fa Jiate Yu Guoxian Zhang Yi Yan Qing Liu Qiuyu Zhang Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of industry and Information Technology School of Chemistry and Chemical Engineering Northwestern Polytechnical University

This work develops a protein imprinted nanosphere with varied recognition specificity for bovine serum albumin(BSA) and lysozyme(Lyz) under different UV light through a gradient dual crosslinked imprinting strategy(i.e., covalent crosslinking and dynamic reversible crosslinking). The imprinting cavities are initially constructed using irreversible covalent crosslinking to specifically recognize BSA, and then the coumarin residues in the imprinting cavities are crosslinked under 365 nm UV light to further imprint Lyz,because Lyz has smaller size than BSA. Since the photo-crosslinking of coumarin is a reversible reaction,the imprinting cavities of Lyz can be de-crosslinked under 254 nm UV light and restore the imprinting cavities of BSA. Moreover, the N-isopropyl acrylamide(NIPAM) and pyrrolidine residues copolymerized in the polymeric surface of the nanospheres are temperature-and p H-responsive respectively. Therefore, the protein rebinding and release behaviors of the nanospheres are controlled by external temperature and p H. As a result, the materials can selectively separate BSA from real bovine whole blood and Lyz from egg white under different UV light. This study may provide a new strategy for construction of protein imprinted materials with tunable specificity for different proteins.

关键词： Dynamically reversible crosslinking Molecularly imprinting Protein recognition Stimulus-response Variable specificity

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Electrodeposited binder-free oxy-hydroxide nanostructures as promising electrocatalyst for hydrogen and oxygen evolution reactions

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Nano Research 2025年第2期18卷 11-63页

作者： Danial Iravani Ghasem Barati Darband chemical engineering Department Faculty of EngineeringFerdowsi University of Mashhad(FUM)*** MashhadIran Materials and Metallurgical engineering Department Faculty of EngineeringFerdowsi University of Mashhad(FUM)*** MashhadIran

In recent years,extensiveresearch and development have been conducted on renewable energies to overcome the problems caused by fossil fuel *** the meantime,the production of hydrogen energy through electrochemical water spltting(EWS)has been limited by various challenges,such as high required ***,other methods of hydrogen production may lead to environmental problems,such as greenhouse gas *** electrocatalysts can significantly mitigate the EWS ***-hydroxide compoundspossess unique properties that make them effective electrocatalysts for the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER).Additionally,the utilizationof the electrodeposition method,a binder-free technique,enables the production of electrodes exhibiting favorable electrocatalytic activity and *** review article provides an overview of the challenges associated with the EWS technique,highlighting the importance of transition metal oxy-hydroxide electrodes in facilitating the HER and OER ***,the paper evaluates the effectiveness of fabricated transition metal oxy-hydroxide electrodes through electrodeposition and suggests potential areas for future research on Ews.

关键词： electrochemical water splitting hydrogen evolution reaction oxygen evolution reaction electrodeposition oxy-hydroxides

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On load dependence of detachment rate of kinesin motor

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Chinese Physics B 2025年第1期34卷 498-505页

作者： Xiao-Xuan Shi Yao Wang Yu-Ru Liu Ping Xie School of Pharmaceutical engineering Chongqing Chemical Industry Vocational CollegeChongqing 401220China Laboratory of Soft Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China

Kinesin is an archetypal microtubule-based molecular motor that can generate force to transport cargo in cells. The load dependence of the detachment rate is an important factor of the kinesin motor, the determination of which is critically related to the chemomechanical coupling mechanism of the motor. Here, we use three models for the load dependence of the detachment rate of the kinesin motor to study theoretically and numerically the maximal force generated and microtubuleattachment duration of the motor. By comparing the theoretical and numerical results with the available experimental data,we show that only one model can explain well the available experimental data, indicating that only this model can be applicable to the kinesin motor.

关键词： kinesin detachment rate generated force chemomechanical coupling mechanism optical trapping

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Multivariate synergy for heightening ionic HOF robustness and proton conductivity

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Science China Chemistry 2025年

作者： Xiang-Tian Bai Li-Hui Cao Xu-Yong Chen Jia-Yu Wang Zi-Ye Zhou Shaanxi Key Laboratory of chemical Additives for industry College of Chemistry and Chemical EngineeringShaanxi University of Science and Technology

Multicomponent crystalline materials construct more complex and diversified structures with different combinations and modes,which expands the material structure space and application *** this work,we have successfully synthesized two twocomponent ionic hydrogen-bonded organic frameworks （iHOF-32 and iHOF-33） and a three-component iHOF （iHOF-34）.Guanidine hydrochloride which is rich in N and H and has a short chain length strengthens the hydrogen bonding network of iHOF,thereby aiding in the efficient migration of *** rigid architecture of 1,1'-diamino-4,4'-bipyridine diiodide furnishes additional scaffolding for the iHOFs and enhances its robustness under harsh ***-34 accomplishes the combination of the ultra-high proton conductivity of iHOF-32 and the robustness of iHOF-33 by the synergistic interaction among the three components of *** addition,iHOF-34 was fabricated as a composite membrane with a peak proton conductivity of 1.55×10-1S cm-1,which is 3.8 times higher than that of recast Nafion,and has extensive potential in fuel *** self-assembly strategy of multicomponent HOFs opens up new avenues for constructing diverse structures while promising new opportunities for applications in the fields of proton conduction and energy storage.

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