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Journal of Rare Earths 2025年第2期43卷 304-311页

作者： Fugang Chen Suxin Lu Jie Wang Yong Zhao Wenqiang Zhao Zhi Xu School of Materials Science and Engineering Jiangsu University of Science and Technology Baotou Tianshi Rare Earth New Materials co. Ltd. Jiangsu Yangzi Xinfu shipbuilding co. Ltd.

A sintered Nd-Y-Fe-B magnet was designed and manufactured by the multi-main-phase *** distributed Y in the magnet decreases the adverse magnetic weakening effect of Y on the *** boundary diffusion process（GBDP） was co.ducted to further enhance the co.rcivity of the Nd-Y-Fe-B *** co.rcivity increases significantly from 884 to 1741 kA/m after GBDP with *** mechanism of the co.rcivity enhancement is discussed based on the microstructure *** simulation reveals that when the diffused Tb-rich shell thickness is lower than 12 nm the c-plane shell（perpendicular to the c-axis） is much more effective in enhancing the co.rcivity than the side plane shell（parallel to the c-axis）.But when the Tb-rich shell thickness is above12 nm the side plane shell co.tributes more to the co.rcivity *** results in this work can help to design and manufacture Nd-Fe-B magnets with low co.t and high magnetic properties.

关键词： Grain boundary diffusion Micromagnetic simulation Multi-main-phase process Nd-Fe-B magnets Rare earths

co.ransport of nanoplastics with nZnO in saturated porous media:From brackish water to seawater

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Journal of Environmental Sciences 2025年第2期148卷 541-552页

作者： Yuanzhang Hou Yange Wang Yidi Zhang Zhibo Lu Zhenbo Zhang Zhiqiang Dong Yuping Qiu Department of Environmental Science College of Environmental Science and EngineeringTongji UniversityState Key Laboratory of Pollution Control and Resources ReuseShanghai Institute of Pollution Control and Ecological SecurityShanghai 200092China School of Medicine Tongji UniversityShanghai 200065China Municipal Environmental Protection Engineering co. Ltd of CERC Shanghai GroupShanghai 201906China China Railway Engineering Group co. Beijing 100039China

The ocean serves as a repository for various types of artificial ***(NPs)and nano zinc oxide(nZnO),which are frequently employed in personal care products and food packaging materials,are likely simultaneously released and eventually into the ocean with surface ***,their mutual influence and shared destiny in marine environment cannot be *** study examined how nanomaterials interacted and transported through sea sand in various salinity *** showed that NPs remained dispersed in brine,while nZnO formed *** seawater of 35 practical salinity units(PSU),nZnO formed heteroaggregates with NPs,inhibiting NPs mobility and decreasing the reco.ered mass percentage(Meff)from 24.52%to 12.65%.In 3.5 PSU brackish water,nZnO did not significantly aggregate with NPs,and thus barely affected their ***,NPs greatly enhanced nZnO transport with Meff increasing from 14.20%to 25.08%,attributed to the carrier effect of higher mobility *** from brackishwater to seawater was simulated in salinity change experiments and revealed a critical salinity threshold of 10.4 PSU,below which the mobility of NPs was not affected by co.xisting nZnO and above which nZnO strongly inhibited NP *** study highlights the importance of co.sidering the mutual influence and shared destiny of artificial nanoparticles in the marine environment and how their interaction and co.ransport are dependent on changes in seawater salinity.

关键词： Homoaggregate Heteroaggregate Transport Sea sand Salinity threshold

Impact of Various Silico. Sources on the Synthesis of Mordenite and Differences in the Carbonylation Reaction of Dimethyl Ether

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Chemical Research in Chinese Universities 2025年第1期41卷 59-65页

作者： CHEN Long WANG Yunzheng LV Jiangang YANG Weimin School of Chemical Engineering East China University of Science and TechnologyShanghai200237P.R.China Sinopec shanghai Research Institute of Petrochemical Technology co. Ltd.Shanghai201208P.R.China

This study introduces an innovative method for synthesizing mordenite(MOR)by employing a co.bination of water glass and fumed silica as the silica *** zeolite produced through this method exhibits a smaller grain size,a larger specific surface area,and a greater number of Brønsted acid sites co.pared to the co.ventionally synthesized mordenite using silica ***,the chemical environment of framework Al in MOR zeolites is influenced by different silica sources,leading to varied acid properties between the two MOR zeolites,which results in an enhanced activity of dimethyl ether carbonylation from 50%to over 83%.

关键词： Mordenite Silica source DME carbonylation

Bioenergy reco.ery and carbon emissions benefits of short-term bio-thermophilic pretreatment on low organic sewage sludge anaerobic digestion:A pilot-scale study

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Journal of Environmental Sciences 2025年第2期148卷 321-335页

作者： Hui Wang Xiang Fu Haozhe Huang Danni Shen Dongdong Fan Liming Zhu Xiaohu Dai Bin Dong co.lege of Environmental Science and Engineering Tongji UniversityShanghai 200092China Yangtze Eco.Environment Engineering Research Center China Three Gorges CorporationBeijing 100038China Yangtze River Eco.Environmental Engineering Research Center Shanghai InvestigationDesign and Research Institute Co.LTDShanghai 200092China China co.struction Third Engineering Bureau First Engineering co. Ltd.Wuhan 430000China

Sewage sludge in cities of Yangzi River Belt,China,generally exhibits a lower organic co.tent and higher silt co.tentdue to leakage of drainage system,which caused low bioenergy reco.ery and carbon emission benefits in co.ventional anaerobic digestion(CAD).Therefore,this paper is on a pilot scale,a bio-thermophilic pretreatment anaerobic digestion(BTPAD)for low organic sludge(volatile solids(VS)of 4%)was operated with a long-term co.tinuous flow of 200 *** VS degradation rate and CH_(4) yield of BTPAD increased by 19.93%and 53.33%,respectively,co.pared to those of *** analysis of organic co.positions in sludge revealed that BTPAD mainly improved the hydrolysis of proteins in *** analysis of microbial co.munity proportions by high-throughput sequencing revealed that the short-term bio-thermophilic pretreatment was enriched in Clostridiales,co.rothermobacter and Gelria,was capable of hydrolyzing acidified proteins,and provided more volatile fatty acid(VFA)for the subsequent *** co.bined with fluorescence quantitative polymerase chain reaction(PCR)analysis showed that the number of bacteria with high methanogenic capacity in BTPAD was much higher than that in CAD during the medium temperature digestion stage,indicating that short-term bio-thermophilic pretreatment co.ld provide better methanogenic co.ditions for ***,the greenhouse gas emission footprint analysis showed that short-term bio-thermophilic pretreatment co.ld reduce the carbon emission of sludge anaerobic digestion system by 19.18%.

关键词： Sludge Anaerobic digestion Bio-thermophilic pretreatment Pilot scale Molecular microbiology Carbon emissions

The mechanisms of pH regulation on promoting volatile fatty acids production from kitchen waste

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Journal of Environmental Sciences 2025年第1期147卷 414-423页

作者： Feng Liu Tingting Wang Leiyu Feng Yinguang Chen co.lege of Environmental Science and Engineering Tongji UniversityShanghai 200092China TUS-Environmental Science and Technology Development co. Ltd.Beijing 100084China

The anaerobic acid production experiments were co.ducted with the pretreated kitchen waste under pH *** results showed that pH 8 was co.sidered to be the most suitable co.dition for acid production,especially for the formation of acetic acid and propionic *** average value of total volatile fatty acid at pH 8 was 8814 mg co./L,1.5 times of that under blank *** average yield of acetic acid and propionic acid was 3302 mg co./L and 2891 mg co./L,*** activities of key functional enzymes such as phosphotransacetylase,acetokinase,oxaloacetate transcarboxylase and succinylco. transferase were all *** further explore the regulatory mechanisms within the system,the distribution of microorganisms at different levels in the fermentation system was obtained by microbial sequencing,results indicating that the relative abundances of Clostridiales,Bacteroidales,Chloroflexi,Clostridium,Bacteroidetes and Propionibacteriales,which were great co.tributors for the hydrolysis and acidification,increased rapidly at pH 8 co.pared with the blank ***,the proportion of genes enco.ing key enzymes was generally increased,which further verified the mechanism of hydrolytic acidification and acetic acid production of organic matter under pH regulation.

关键词： Kitchen waste Acid fermentation Volatile fatty acids pH regulation Functional genes

Recent progress on stability and applications of flexible perovskite photodetectors

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Journal of Semico.ductors 2025年第1期46卷 5-19页

作者： Ying Hu Qianpeng Zhang Junchao Han Xinxin Lian Hualiang Lv Yu Pei Siqing Shen Yongli Liang Hao Hu Meng Chen Xiaoliang Mo Junhao Chu State Key Laboratory of Photovoltaic Science and Technology Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and PerceptionDepartment of Materials ScienceInstitute of OptoelectronicsFudan UniversityShanghai 200433China Advanced Silico. Technology co. Ltd.Shanghai 201616China

Flexible photodetectors have garnered significant attention by virtue of their potential applications in environmental monitoring,wearable healthcare,imaging sensing,and portable optical *** stand out as particularly promising materials for photodetectors,offering exceptional optoelectronic properties,tunable band gaps,low-temperature solution processing,and notable mechanical *** this review,we explore the latest progress in flexible perovskite photodetectors,emphasizing the strategies developed for photoactive materials and device structures to enhance optoelectronic performance and ***,we discuss typical applications of these devices and offer insights into future directions and potential applications.

关键词： perovskite flexible photodetector stability versatile applications

Super-high bed sintering for iron ores:variation and optimization of bed resistance

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Journal of Iron and Steel Research International 2025年第1期32卷 40-51页

作者： Liang-ping Xu Lin Xiong Hui-bo Liu Xi-duan Yang Ai-xiang Mao Pei-dun Chen Guang-hui Li School of Minerals Processing and Bioengineering Central South UniversityChangsha410083HunanChina Central Research Institute Baosteel Group Co.Ltd.Shanghai201900China Manufacturing Management Department Guangdong Zhongnan Iron and Steel Co.Ltd.Shaoguan512123GuangdongChina Technology and Development Center Shandong Taishan Iron and Steel Group Co.Ltd.Jinan271100ShandongChina

As the bed depth increases,sintering yield increases,but the productivity *** reveal the reasons for the decrease in productivity and explore targeted solutions,the bed resistance of mixtures,wet zone,and co.bustion zone was analyzed in the *** results showed that the decreased porosity of mixture resulted in the increased bed resistance by 160.56%when the bed depth increased from 600 to 1000 *** improving porosity of 1%by adding loosening bars with optimized size and distribution,the bed resistance decreased,and the productivity increased by 5%.The increase in bed depth increased the thickness of the wet zone from 120 to 680 mm and the resistance from 1.56 to 8.83 *** using a three-stage intensive mixer and pre-adding water for granulation,the moisture of mixture was reduced by 0.6%,and the sintering productivity increased by 4%.Besides,the high bed resistance is mainly caused by the increase in the thickness of the co.bustion zone from 31.9 to 132.7 mm,and the bed resistance increased from 0.70 to 5.62 *** bed resistance of the co.bustion zone at 900 mm was increased by 90.51%co.pared to 700 *** optimization of the distribution of co.e breeze,the thickness of co.bustion zone at the lower layer decreased from 132.7 to 106.84 mm and permeability improved significantly.

关键词： Super-high bed sintering Bed resistance Permeability Productivity Wet zone co.bustion zone

co.struction and application of multico.ponent fluorescent droplets

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Chinese Chemical Letters 2025年第1期36卷 137-146页

作者： Wei-Tao Dou Qing-Wen Zeng Yan Kang Haidong Jia Yulian Niu Jinglong Wang Lin Xu shanghai Key Laboratory of Green Chemistry and Chemical Processes Shanghai Frontiers Science Center of Molecule Intelligent SynthesesSchool of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai 200062China shanghai Jahwa United co. Ltd.Shanghai 200082China Chongqing Key Laboratory of Precision Optics Chongqing Institute of East China Normal UniversityChongqing 401120China

The rapid development of microfluidic technology has led to the evolution of microdroplets from simple emulsion structures to co.plex multilayered and multico.partmental *** advancements have endowed microdroplets with the capability to co.tain multiple co.partments that remain isolated from one another,enabling them to carry different molecules of ***,researchers can now investigate intricate spatially co.fined chemical reactions and signal transduction pathways within subcellular ***,modern microdroplets often possess excellent optical transparency,allowing fluorescently labelled,multi-layered,and co.partmental droplets to provide detailed insights through real-time,in situ,and dynamic fluorescence ***,this review systematically summarizes current methodologies for preparing multico.ponent microdroplets and their applications,particularly focusing on fluorescent ***,it discusses existing critical challenges and outlines future research *** offering a co.prehensive overview of the preparation methods and applications of fluorescent microdroplets,this review aims to stimulate the interest of researchers and foster their utilization in more co.plex and biomimetic environments.

关键词： Fluorescent Microfluidic Fluorescent droplets Multilayered droplets Multico.partmental droplets

GFRF R-CNN:Object Detection Algorithm for Transmission Lines

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co.puters, Materials & co.tinua 2025年第1期82卷 1439-1458页

作者： Xunguang Yan Wenrui Wang Fanglin Lu Hongyong Fan Bo Wu Jianfeng Yu shanghai Advanced Research Institute Chinese Academy of SciencesShanghai201210China University of Chinese Academy of Sciences Beijing100049China Jingwei Textile Machinery co. Ltd.Beijing100176China

To maintain the reliability of power systems,routine inspections using drones equipped with advanced object detection algorithms are essential for preempting power-related *** increasing resolution of drone-captured images has posed a challenge for traditional target detection methods,especially in identifying small objects in high-resolution *** study presents an enhanced object detection algorithm based on the Faster Regionbased co.volutional Neural Network(Faster R-CNN)framework,specifically tailored for detecting small-scale electrical co.ponents like insulators,shock hammers,and screws in transmission *** algorithm features an improved backbone network for Faster R-CNN,which significantly boosts the feature extraction network’s ability to detect fine *** Region Proposal Network is optimized using a method of guided feature refinement(GFR),which achieves a balance between accuracy and *** inco.poration of Generalized Intersection over Union(GIOU)and Region of Interest(ROI)Align further refines themodel’s *** results demonstrate a notable improvement in mean Average Precision,reaching 89.3%,an 11.1%increase co.pared to the standard Faster *** highlights the effectiveness of the proposed algorithm in identifying electrical co.ponents in high-resolution aerial images.

关键词： Faster R-CNN transmission line object detection GIOU GFR

Direct Synthesis of UOS Zeolite Using a Simple and co.mercially Available Organic Structure-directing Agent

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Chemical Research in Chinese Universities 2025年第1期41卷 113-120页

作者： HU Chao FU Wenhua YUAN Zhiqing LIU Chuang WANG Zhendong YANG Weimin School of Chemical Engineering East China University of Science and TechnologyShanghai200237P.R.China State Key Laboratory of Green Chemical Engineering and Industrial Catalysis Sinopec Shanghai Research Institute of Petrochemical Technology Co.Ltd.SinopecShanghai201208P.R.China

The preparation of zeolite utilizing co.mercially available organic co.pounds instead of co.plex and expensive ones is of practical ***,we report the synthesis of germanosilicate zeolite with UOS framework by utilizing a simple and co.mercially available co.pound 3-diethylamino-1-propanol(DEAP)as organic structure-directing agent(OSDA)under fluoride *** synthesis has been optimized by rational modification of the variables,including the Si/Ge molar ratios,the amount of DEAP and F−anions,the co.centration of the synthesis gel and crystallization *** zeolite materials were prepared with Si/Ge ratio in the range of 1–*** physico.hemical properties,including crystallinity,crystal morphology,chemical environment of framework elements,textural properties and acidity were characterized by multiple *** atoms are proved to preferentially occupy the T sites in the double-four-ring(D4Rs)*** to the isostructural IM-16 zeolite,the UOS zeolites prepared herein are of similar textural properties,such as specific surface area and micropore *** simple structure and co.mercial availability of DEAP endow this synthesis with a co.t advantage over the co.ventional preparation of UOS zeolite,where an expensive imidazolium derivative is employed.

关键词： UOS zeolite Organic structure-directing agent Hydrothermal synthesis Physico.hemical property