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Personalized federated few-shot node classification

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Science China(Information Sciences) 2025年第1期68卷 204-218页

作者： Yunfeng ZHAO Xintong HE Guoxian YU Jun WANG Yongqing ZHENG Carlotta DOMENICONI School of Software Shandong University joint SDU-NTU centre for Artificial Intelligence Research Shandong University Department of Mathematics National University of Singapore Department of Computer Science George Mason University

Personalized federated learning(PFL) aims to train customized models for individual clients in a decentralized setting, with the account of non-independent and identically distributed data across clients. However, most PFL methods adopt uniform classification layers for diverse clients and give rise to error-prone predictions, due to the task heterogeneity notably prominent in decentralized graph data scenarios. Although some PFL solutions setup client-specific classification layers for each client and optimize them only locally, they are corrupted with limited local training data. We propose an innovative solution called federated parameter decoupling and node augmentation(Fed PANo) to address these problems and to achieve personalized federated few-shot node classification, which is a prevalent and challenging but unexplored topic. Specifically, Fed PANo first separates the local model into the GNN and classifier to handle unique client-specific task variations. The GNN is trained through federated learning to capture shared knowledge of graph nodes across clients, while the classifier is custom-designed and trained individually for each client. Additionally, a generic classifier shared among clients is adopted to encourage the GNN's grasp of shared information. Then Fed PANo further proposes the node generator along with its local and collaborative training strategies to deal with the node scarcity of clients. Extensive experimental results on benchmark datasets confirm that Fed PANo outperforms eight competitive baselines across different settings.

关键词： personalized federated learning few-shot learning node classification task heterogeneity parameter decoupling node augmentation

16.48% Efficient solution-processed CIGS solar cells with crystal growth and defects engineering enabled by Ag doping strategy

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Journal of Energy Chemistry 2025年第1期100卷 59-65页

作者： Mengyu Xu Shaocong Yan Ting Liang Jia Jia Shengjie Yuan Dongxing Kou Zhengji Zhou Wenhui Zhou Yafang Qi Yuena Meng Litao Han Sixin Wu Key Laboratory for Special Functional Materials of MOE National&Local Joint Engineering Research Centre for High-efficiency Display and Lighting TechnologySchool of Nanoscience and Materials EngineeringHenan UniversityKaifeng 475004HenanChina

Solution-processed Cu(In,Ga)Se_(2)(CIGS) solar cells suffer from serious carrier recombination and power conversion efficiency(PCE) loss because of the poor film properties and easy formation of ***, we propose Ag&Se co-selenization strategy to enhance the crystallization and passivate harmful defects of the CIGS films. The formation of Ag-Se phase during the selenization process enables the formation of large grains and suppresses the deep level defects. It is found that Ag doping can enlarge the depletion region width, lower the Urbach energy and prolong the carrier lifetime. As a result, a champion solution-processed CIGS solar cell presents a high efficiency of 16.48% with the highly improved opencircuit voltage(VOC) of 662 m V and fill factor(FF) of 75.8%. This work provides an efficient strategy to prepare high quality solution-processed CIGS films for high-performance CIGS solar cells.

关键词： CIGS solarcells Solution-processedmethod Ag doping Crystal growth Defects engineering

Structural and microwave absorption properties of CoFe_(2)O_(4)/residual carbon composites

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 221-232页

作者： Yuanchun Zhang Shengtao Gao Xingzhao Zhang Dacheng Ma Chuanlei Zhu Jun He joint National-Local Engineering Research centre for Safe and Precise Coal Mining Anhui University of Science and TechnologyHuainan 232001China School of Chemical and Blasting Engineering Anhui University of Science and TechnologyHuainan 232001China

Electromagnetic interference,which necessitates the rapid advancement of substances with exceptional capabilities for bsorbing electromagnetic waves,is of urgent concern in contemporary *** this work,CoFe_(2)O_(4)/residual carbon from coal gasification fine slag(CFO/RC)composites were created using a novel hydrothermal *** mechanisms for microwave absorption,including conductive loss,natural resonance,interfacial dipole polarization,and magnetic flux loss,are involved in these ***,compared with pure residual carbon materials,this composite offers superior capabilities in microwave *** 7.76GHz,the CFO/RC-2 composite achieves an impressive minimum reflection loss(RL_(min))of-43.99 dB with a thickness of 2.44 ***,CFO/RC-3 demonstrates an effective absorption bandwidth(EAB)of up to 4.16 GHz,accompanied by a thickness of *** study revealed the remarkable capability of the composite to diminish electromagnetic waves,providing a new generation method for microwave absorbing materials of superior quality.

关键词： coal gasification slag residual carbon hydrothermal method microwave absorption CoFe_(2)O_(4)

Co_(0.5)Zn_(0.5)Fe_(2)O_(4)modified residual carbon as an excellent microwave absorber

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International Journal of Minerals,Metallurgy and Materials 2025年第3期32卷 534-545页

作者： Yuanchun Zhang Dacheng Ma Xingzhao Zhang Chuanlei Zhu Shengtao Gao School of Chemical and Blasting Engineering Anhui University of Science and TechnologyHuainan 232001China joint National-Local Engineering Research centre for Safe and Precise Coal Mining Anhui University of Science and TechnologyHuainan 232001China

Microwave absorbers have great potential for military and civil ***,Co_(0.5Z)n_(0.5)Fe_(2)O_(4)/residual carbon(CZFO/RC)composites have been successfully prepared using a hydrothermal *** was derived from coal gasification fine slag(CGFS)via pickling,which removes inorganic *** test means have been used to study the chemical composition,crys-tal structure,and micromorphology of the CZFO/RC composites,as well as their electromagnetic parameters and microwave absorption(MA)*** CZFO/RC composites exhibit excellent MA performance owing to their dielectric and magnetic *** the thickness of CZFO/RC-2(FeCl_(3)·6H_(2)O of 0.007 mol,ZnCl_(2)of 0.00175 mol,and CoCl_(2)·6H_(2)O of 0.00175 mol)is 1.20 mm,the minimum reflection loss(RL_(min))is-56.24 dB,whereas at a thickness of 3.00 mm and 6.34 GHz,RL_(min) is-45.96 dB and the maximum effective ab-sorption bandwidth is 1.83 GHz(5.53-7.36 GHz).Dielectric loss includes interface and dipole polarizations,while magnetic loss includes current and remnant magnetic ***/RC-2 exhibits high impedance matching,allowing microwave to enter the *** com-puter simulation technology confirms that CZFO/RC-2 considerably decreases the radar *** study can be used to promote the use of CGFS as electromagnetic wave(EMW)-absorbing materials.

关键词： cobalt-zinc ferrite residual carbon microwave absorption coal gasification fine slag coal-based solid waste

Construction of iron manganese metal-organic framework-derived manganese ferrite/carbon-modified graphene composites toward broadband and efficient electromagnetic dissipation

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International Journal of Minerals,Metallurgy and Materials 2025年第3期32卷 546-555页

作者： Baohua Liu Shuai Liu Zaigang Luo Ruiwen Shu School of Chemical and Blasting Engineering Anhui Province Key Laboratory of Specialty PolymersAnhui University of Science and TechnologyHuainan 232001China joint National-Local Engineering Research centre for Safe and Precise Coal Mining Anhui University of Science and TechnologyHuainan 232001China

The preparation of carbon-based electromagnetic wave(EMW)absorbers possessing thin matching thickness,wide absorption bandwidth,strong absorption intensity,and low filling ratio remains a huge ***-organic frameworks(MOFs)are ideal self-sacrificing templates for the construction of carbon-based EMW *** this work,bimetallic FeMn-MOF-derived MnFe_(2)O_(4)/C/graphene composites were fabricated via a two-step route of solvothermal reaction and the following pyrolysis *** results re-veal the evolution of the microscopic morphology of carbon skeletons from loofah-like to octahedral and then to polyhedron and pomegran-ate after the adjustment of the Fe^(3+)to Mn^(2+)molar ***,at the Fe^(3+)to Mn^(2+)molar ratio of 2:1,the obtained MnFe_(2)O_(4)/C/graphene composite exhibited the highest EMW absorption ***,a minimum reflection loss of-72.7 dB and a max-imum effective absorption bandwidth of 5.1 GHz were achieved at a low filling ratio of 10wt%.In addition,the possible EMW absorp-tion mechanism of MnFe_(2)O_(4)/C/graphene composites was ***,the results of this work will contribute to the construction of broadband and efficient carbon-based EMW absorbers derived from MOFs.

关键词： metal-organic frameworks graphene magnetic composites morphology regulation electromagnetic dissipation

The First Non-Chordates QRFP-Like Peptide Receptor Gene in the Cephalopod Sepiella japonica:Identification,Characterization and Possible Role in Food Intake

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Journal of Ocean University of China 2025年第1期24卷 195-208页

作者： LI Shuang HAO Qing QIU Jiayin ZHOU Xu CHI Changfeng ZHENG Libing National and Provincial joint Engineering Research centre for Marine Germplasm Resources Exploration and Utilization School of Marine Science and TechnologyZhejiang Ocean UniversityZhoushan 316022China School of Food Science and Technology Jiangnan UniversityWuxi 214122China

The novel identified receptor,GPR103,now renamed QRFPR(also referred to as SP9155 or AQ27),is the endogenous receptor for the neuropeptide QRFP(also referred to as 26RFa).The distribution pattern,structure,and biological actions,such as feeding behavior,bone formation,and hormone secretion of QRFPR have been largely described in chordate species,while no research on QRFPR has been reported in non-chordate ***,the first non-chordates QRFP-like peptide receptor gene in the cephalopod Sepiella japonica(Sj_QRFPLR)was identified and *** from multiple alignments,phylogenetic analysis,and in vitro subcellular localization analysis indicated that Sj_QRFPLR is a class A GPCR and it belongs to the QRFPR ***,QRFPR is likely to be structurally conserved in cephalopod *** situ hybridization and RT-PCR data revealed a widespread distribution pattern of Sj_QRFPLR in multiple function lobes of the female brain and numerous peripheral tissues in both male and female ***,a food deprivation and refeeding experiment showed that Sj_QRFPLR is likely to stimulate food intake in ***,a possible link between Sj_QRFPLR and immune response was briefly detected in *** results will contribute to our understanding of QRFPR in the cephalopod as well as the peptidergic regulation of the QRFP/QRFPR system in non-chordates.

关键词： neuropeptide 26RFa/QRFP QRFP-like peptide receptor cuttlefish Sepiella japonica

Bisulfite-mediated base-free decarboxylative carbonylsulfination of alkenes:access toβ-keto sultines

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Science China Chemistry 2025年第2期68卷 622-630页

作者： Yongxin Zhang Pan Zhou Xinyue Ma Xiaoxiao Yang Xing Fang Yuxi Wang Chao Shu State Key Laboratory of Green Pesticide Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon ReductionCCNU-uOttawa Joint Research CentreCollege of ChemistryCentral China Normal University(CCNU)Wuhan 430079China Key Laboratory of Functional Molecular Solids Ministry of EducationAnhui Normal UniversityWuhu 241000China

A straightforward three-component decarboxylative cross-coupling ofα-keto acids,alkenes and sodium bisulfite is established for the construction of otherwise challenging-to-accessβ-keto sultine *** reaction involves the photoinduced carbonylsulfination of alkenes and utilizes sodium bisulfite as both a sulfur dioxide surrogate and buffer agent for deprotonation ofα-keto carboxylic *** note,the practical procedure featured broad substrate scope and group tolerance for diverse biologically important molecules under mild and operationally simple conditions,using an organic *** studies indicated that the transformation proceeds an apparent two-pronged radical addition/radical-polar crossover/SO_(2) insertion/ionic cyclization relay process,distinct from traditional alkenes bifunctionalization.

关键词： photoredox catalysis β-keto sultines carbonylsulfination sodium bisulfite radical

Knotting ligands to control metal coordination geometry

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Science China Chemistry 2025年第2期68卷 403-404页

作者： Fabien B.L.Cougnon Department of Chemistry and Nanoscience centre University of JyväskyläJyväskyläFinland

Zinc is a metal of particular importance for life[1].It is the most abundant transition metal in biological systems after iron and contributes both structural and catalytic roles to many cellular *** properties of Zn^(Ⅱ),unlike those of any other first-row transition metal ions,explain its biological *** to its filled d-shell orbitals,Zn^(Ⅱ) is redox-stable,has a ligand-field energy stabilization of zero and,consequently,no typical coordination number and *** metalloproteins exploit these features to carry a broad range of chemical reactions in mild *** metalloenzymes,unsaturated ZnII centres often act as redox-stable Lewis *** protein backbone provides a highly preorganized environment around the metal centre and accompanies the changes in coordination geometry occurring as substrate transformation proceeds,thereby modulating the metal reactivity.

关键词： coordination geometry centre

Acellular scaffold‑based approach for in situ genetic engineering of host T‑cells in solid tumor immunotherapy

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Military Medical Research 2025年第1期12卷 16-35页

作者： Hiren Y.Dandia Mamatha M.Pillai Deepak Sharma Meghna Suvarna Neha Dalal Ayush Madhok Arvind Ingle Shubhada V.Chiplunkar Sanjeev Galande Prakriti Tayalia Department of Biosciences and Bioengineering Indian Institute of Technology BombayPowaiMumbai 400076India Radiation Biology and Health Sciences Division Bhabha Atomic Research CentreMumbai 400085India centre of Excellence in Epigenetics Department of BiologyIndian Institute of Science Education and ResearchPune 411008India Advanced centre for Treatment Research and Education in Cancer(ACTREC)Tata Memorial CentreKhargharMumbai 410210India

Background:Targeted T-cell therapy has emerged as a promising strategy for the treatment of hematological ***,its application to solid tumors presents significant challenges due to the limited accessibility and *** delivery of tumor-specific T-cells using biomaterials has shown promise,however,procedures required for genetic modification and generation of a sufficient number of tumor-specific T-cells ex vivo remain major obstacles due to cost and time ***:Polyethylene glycol(PEG)-based three-dimensional(3D)scaffolds were developed and conjugated with positively charged poly-L-lysine(PLL)using carbamide chemistry for efficient loading of lentiviruses(LVs)carrying tumor antigen-specific T-cell receptors(TCRs).The physical and biological properties of the scaffold were extensively ***,the scaffold loaded with OVA-TCR LVs was implanted in B16F10 cells expressing ovalbumin(B16-OVA)tumor model to evaluate the anti-tumor response and the presence of transduced ***:Our findings demonstrate that the scaffolds do not induce any systemic inflammation upon subcutaneous implantation and effectively recruit T-cells to the *** B16-OVA melanoma tumor-bearing mice,the scaffolds efficiently transduce host T-cells with OVA-specific *** genetically modified T-cells exhibit homing capability towards the tumor and secondary lymphoid organs,resulting in a significant reduction of tumor size and systemic increase in anti-tumor *** cell profiling revealed a significantly high percentage of transduced T-cells and a notable reduction in suppressor immune cells within the tumors of mice implanted with these ***:Our scaffold-based T-cell therapy presents an innovative in situ localized approach for programming T-cells to target solid *** approach offers a viable alternative to in vitro manipulation of T-cells,circumventing the need for large-scale in vitro generat

关键词： Polyethylene glycol diacrylate Poly-L-lysine Lentiviruses T-cell therapy B16F10-OVA melanoma