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Microwave-assisted hydrothermal synthesis of copper oxide-based gas-sensitive nanostructures

Rare Metals 2021年第6期40卷 1477-1493页

作者： Ying Li yu-ling lu Kai-Di Wu Dong-Zhi Zhang Marc Debliquy Chao Zhang College of Mechanical Engineering Yangzhou UniversityYangzhou 225127China College of Control Science and Engineering China University of Petroleum(East China)Qingdao 266580China Service de Science des Materiaux Faculte PolytechniqueUniversite de MonsMons 7000Belgium

Hydrothermal methods are widely used in chemical synthesis of target products with specific morphology and *** methods are very efficient for the preparation of well-controlled structures but the reaction time is usually *** assistance of microwave makes the reaction system heat up faster,more uniformly and reactions are accelerated,it also can be utilized to change the morphology or structure of materials,which improves the physic-chemical properties of synthesized products and influences its gas-sensing *** oxide(CuO)is widely applied in semiconductor gas sensors because of its good reactivity and *** review article briefly introduces the principle,mechanism and recent development of CuO nanostructures obtained by microwave-as sis ted hydrothermal synthesis(MWHS)*** also discussed the relation between endopathic factors of material and its gas-sensitive *** technical challenges and prospective solutions for highperformance CuO-based gas-sensitive materials with unique nanostructure are *** is pointed out that the hierarchical CuO-based nanostructures and their composite materials prepared by MWHS process are efficacious methods to improve the gas-sensitive performance of the *** the basis of the morphology,the materials are divided into nanorods,nanoflowers,nanosheets,nanospheres and other *** influence of microwave parameters on the properties of synthetic products is *** influence followed by metal element loading on the structure and properties of CuO-based materials by MWHS process is further *** this review summarizes the research progress of graphene-CuO and metal oxide-CuO composites prepared by MWHS process in recent years.

关键词： Microwave-assisted Hydrothermal synthesis Copper oxide Gas-sensitive material Nanostructure

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Design and analysis of bidirectional deployable parabolic cylindrical antenna

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2014年第2期15卷 83-96页

作者： Tian yu Fu-ling GUAN lu DAI College of Civil Engineering and Architecture Zhejiang University Hangzhou 310058 China

A bidirectional deployable parabolic cylindrical reflector for an L-band synthetic aperture radar is presented in this study, in which a self-deployed antenna with low weight was designed. The antenna consists of four curved surfaces formed from thin sheets of composite materials connected by hinges along the edges, and the reflective surface is provided by the front surface. The edge profiles of connecting lines were obtained through geometric analysis. A scaled model, including design and manufac- ture, was demonstrated to validate the process from the folded state to the fully deployed state. The non-contact synchronous vision measuring method was used to test the basic frequency of the scaled model, and the test results gave the verification of the analyses. Compared with the existing unidirectional deployable antenna, this new type of bidirectional deployable antenna can be applied to larger-size antennas and has better performance because the glass-woven tape connections were substituted with more reliable hinges. Static, modal, harmonic response, and transient response analyses of the full-sized reflector structure were mod- eled with the commercial finite element （FE） package ABAQUS. The modeling techniques were developed to predict the struc- tural dynamic behavior of the reflector and the results showed that the first natural frequency was 0.865 Hz, and the reflector structure had good stiffness in three directions. This proposed structure has very high stiffness-to-mass ratio because of its hollow solid construction. A preliminary simulation of radiation properties of the parabolic cylindrical antenna, fed by an off-set linear feed horn array, was conducted to obtain the radiation pattern of the feed and the reflector.

关键词： Parabolic cylindrical antenna Geometric analysis Deploying and folding process Frequency test Structuralanalysis Radiation property

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Differentiation of embryonic stem cells into corneal epithelium

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Science China(Life Sciences) 2005年第5期48卷 471-480页

作者： WANG Zhichong GE Jian HUANG Bing GAO Qianying LIU Bingqian WANG linghua yu ling FAN Zhigang lu Xiaoming LIU Jingbo Zhongshan Ophthalmic Center Sun Yat-sen University Guangzhou 510060 China Zhongshan Ophthalmic Center Sun Yat-sen University Guangzhou 510060 China Zhongshan Ophthalmic Center Sun Yat-sen University Guangzhou 510060 China Zhongshan Ophthalmic Center Sun Yat-sen University Guangzhou 510060 China Zhongshan Ophthalmic Center Sun Yat-sen University Guangzhou 510060 China Zhongshan Ophthalmic Center Sun Yat-sen University Guangzhou 510060 China Zhongshan Ophthalmic Center Sun Yat-sen University Guangzhou 510060 China Zhongshan Ophthalmic Center Sun Yat-sen University Guangzhou 510060 China Zhongshan Ophthalmic Center Sun Yat-sen University Guangzhou 510060 China Zhongshan Ophthalmic Center Sun Yat-sen University Guangzhou 510060 China

Our project was to determine whether embryonic stem (ES) cells could be induced to differentiate into corneal epithelia by superficial corneoscleral limbal stroma. To achieve this goal, ES-GFP cell line D3 was pre-induced by retinoic acid (RA). The pre-induced cells were seeded on deepithelialized superficial corneoscleral slices (SCSS) to form a monolayer, and di-vided into three groups. Group 1 was cultured and passaged in vitro for direct detection. Group 2 was exposed to air-liquid interfaces for 10 days and implanted into the subcutaneous layer of nude mice for 2 weeks for further induction in vivo. Group 3 was cultured in vitro without any in-ducing factors for control. There were no teratomas found in nude mice which were implanted with differentiated ES cells after two weeks. The differentiated cells showed an appearance of epithelia both in vitro and in vivo. Expression of CK3, P63 and PCNA was detected by immuno-histochemical staining in the differentiated cells in group 1 and 2. Microvillis and zonula oc-cludens were observed on the surface of the differentiated cells under an electron microscope. In the control group, ES cells differentiated freely without any inducing factors. Most cells were shed and formed a neuronal dendrite-like structure, and a minority of cells appeared polymorphic. These results demonstrate that ES cells can differentiate into corneal epithelia on the surface of SCSS under the controlled condition. Differentiated ES cells could be used as epithelial seeding cells for the reconstruction of ocular surface and corneal tissue engineering in the future.

关键词： embryonic stem cells, differentiation, corneal epithelium, microenvironment, superficial corneoscleral limbal stroma.

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Primary lung cancer with radioiodine avidity: A thyroid cancer cohort study

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World Journal of Clinical Cases 2021年第1期9卷 71-80页

作者： yu-ling lu Szu-Tah Chen Tsung-Ying Ho Wen-Hui Chan Richard J Wong Chuen Hsueh Shu-Fu Lin Department of Internal Medicine New Taipei Municipal TuCheng HospitalNew Taipei City 236Taiwan Department of Internal Medicine Chang Gung Memorial HospitalTaoyuan 333Taiwan College of Medicine Chang Gung UniversityTaoyuan 333Taiwan Department of Nuclear Medicine Chang Gung Memorial HospitalTaoyuan 333Taiwan Department of Medical Imaging and Intervention Chang Gung Memorial HospitalTaoyuan 333Taiwan Institute for Radiological Research College of MedicineChang Gung UniversityTaoyuan 333Taiwan Department of Surgery Memorial Sloan-Kettering Cancer CenterNew YorkNY 10065United States Department of Pathology Chang-Gung Memorial HospitalTaoyuan 333Taiwan

BACKGROUND A proportion of lung cancers show sodium/iodide symporter(NIS)*** cancers with NIS expression may uptake radioiodine(RAI)and show RAIavid lesions on RAI scan for differentiated thyroid cancer(DTC)*** To investigate the possibility of RAI uptake by lung cancer in a cohort with thyroid *** RAI-avid lung cancers were analyzed using a prospectively maintained database of patients with thyroid cancer who were registered at a medical center between December 1,1976 and May 28,*** expression in lung cancer was assessed using immunohistochemical *** Of the 5000 patients with thyroid cancer from the studied dataset,4602 had *** follow-up,33 patients developed primary lung *** these patients,nine received an iodine-131(131I)scan within 1 year before the diagnosis of lung *** of these nine lung cancers was *** expression was evaluated,and three of the eight available lung cancers revealed NIS *** proportions of lung cancer cells with NIS expression were 60%,15%,and 10%.The RAI-avid lung cancer had the highest level of expression(60%).The RAI-avid lung cancer had a spiculated border upon single-photon emission computed tomography/computed tomography,which led to an accurate *** A proportion of lung cancer demonstrates NIS expression and is *** should be aware of this possibility in the interpretation of RAI scintigraphy.

关键词： lung cancer Radioiodine Thyroid cancer Adenocarcinoma Sodium/iodide symporter

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Pyrazolone synthesis of spiro[naphthalene-2,4’-pyrazole] and spiro[isoquinoline-7,4’-pyrazole] by Michael addition

Pyrazolone synthesis of spiro[naphthalene-2,4’-pyrazole] an...

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中国化学会第十三届全国有机合成化学学术研讨会

作者： yu-ling lu Jing Sun Chao-Guo Yan College of Chemistry ＆ Chemical Engineering Yangzhou University

Subunits containing carbonrings、nitrogen heterocycles and spirocyclic structures are common in biologically active *** derivatives,representing an important class of five membered-ring lactams,have exhibited a variety of applications as pharmaceutical agents,synthetic scaffolds in medicinal and synthetic ***,pyrazolin-5-ones derivatives have been well known as analgesic and antipyretic *** a consequence,many diverse methods to access structurally diverse heterocyclic spirooxindoles have been developed during the past few years.

关键词： Michael addition Pyrazolone

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Recent Strategies and Advances in Hydrogel‑Based Delivery Platforms for Bone Regeneration

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Nano-Micro Letters 2025年第3期17卷 389-439页

作者： Xiao Wang Jia Zeng Donglin Gan Kun ling Mingfang He Jianshu Li Yongping lu Scientific and Technological Innovation Center for Biomedical Materials and Clinical Research Guangyuan Key Laboratory of Multifunctional Medical HydrogelGuangyuan Central HospitalGuangyuan 628000People’s Republic of China Jiangsu Collaborative Innovation Center of Biomedical Functional Materials Jiangsu Key Laboratory of Bio‑Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing 210023People’s Republic of China College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065People’s Republic of China

Bioactive molecules have shown great promise for effectively regulating various bone formation processes,rendering them attractive therapeutics for bone ***,the widespread application of bioactive molecules is limited by their low accumulation and short half-lives in *** have emerged as ideal carriers to address these challenges,offering the potential to prolong retention times at lesion sites,extend half-lives in vivo and mitigate side effects,avoid burst release,and promote adsorption under physiological *** review systematically summarizes the recent advances in the development of bioactive molecule-loaded hydrogels for bone regeneration,encompassing applications in cranial defect repair,femoral defect repair,periodontal bone regeneration,and bone regeneration with underlying ***,this review discusses the current strategies aimed at improving the release profiles of bioactive molecules through stimuli-responsive delivery,carrier-assisted delivery,and sequential ***,this review elucidates the existing challenges and future directions of hydrogel encapsulated bioactive molecules in the field of bone regeneration.

关键词： Hydrogel Bone regeneration Bioactive molecules Drug delivery Nano-/microscale carriers

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Spatio-temporal patterns and climatic drivers of spring phenology in eight forest communities across the north-south transitional zone of China

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Journal of Geographical Sciences 2025年第1期35卷 17-38页

作者： ZHU Wenbin lu yu Institute of Geographic Sciences and Natural Resources Research CAS School of Geographical Science Nanjing University of Information Science & Technology

The Qinba Mountains are climatically and ecologically recognized as the northsouth transitional zone of *** of its phenology is critical for comprehending the response of vegetation to climatic *** retrieved the start of spring phenology （SOS）of eight forest communities from the MODIS products and adopted it as an indicator for spring *** analysis,partial correlation analysis,and Geo Detector were employed to reveal the spatio-temporal patterns and climatic drivers of *** results indicated that the SOS presented an advance trend from 2001 to 2020,with a mean rate of–0.473 d yr–*** SOS of most forests correlated negatively with air temperature （TEMP） and positively with precipitation （PRE）,suggesting that rising TEMP and increasing PRE in spring would forward and delay SOS,*** dominant factors influencing the sensitivity of SOS to climatic variables were altitude,forest type,and latitude,while the effects of slope and aspect were relatively *** response of SOS to climatic factors varied significantly in space and among forest communities,partly due to the influence of altitude,slope,and aspect.

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Catalytic Performance of Carbon Smoke over Ag-LSCF Composite Catalysts

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 30-34页

作者： GUO Guanlun HAN Ming lu Shaomin yu Jing JU Hongling 无 Hubei Key Laboratory of Advanced Technology for Automotive Components&Hubei Collaborative Innovation Center for Automotive Components Technology Wuhan University of TechnologyWuhan 430070China College of Mechanical and Transportation Southwest Forestry UniversityKunming 650000China

To improve the catalytic performance of La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3)(LSCF)towards carbon soot,we utilized the impregnation method to incorporate Ag into the prepared LSCF *** conducted a series of characterization tests and evaluated the soot catalytic activity of the composite catalyst by comparing it with the LaCoO_(3) group,LaFeO_(3) group,and catalyst-free *** results indicate that the Ag-LSCF composite catalyst exhibits the highest soot catalytic activity,with the characteristic temperature values of 376.3,431.1,and 473.9℃at 10%,50%,and 90%carbon soot conversion,*** values are 24.8,20.2,and 23.1℃lower than those of the LSCF *** also shows that LSCF can improve the catalytic activity of soot after compounding with Ag,and reflects the necessity of using catalysts in soot combustion *** characterization and BET test show that Ag-LSCF has more abundant surface-adsorbed oxygen species,larger specific surface area and pore volume than LSCF,which also proves that Ag-LSCF has higher soot catalytic activity.

关键词： metallic composites carbon smoke oxidation perovskite catalyst soot

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Homologous CoS2 interface with directed electron transfer and strong chloridion repulsion for efficient seawater oxidation

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Science China Chemistry 2025年

作者： yuan Tian Jiang-Bo Chen Jie Ying Ge Tian yu-Xuan Xiao Yi lu Si-Ming Wu Wei Geng ling Shen Xiao-yu Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and School of Materials Science and Engineering and Shenzhen Research Institute & Laoshan Laboratory Wuhan University of Technology School of Chemical Engineering and Technology Sun Yat-Sen University National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies Foshan Xianhu Laboratory

Seawater electrolysis is a highly promising method to produce high energy density hydrogen,especially in dry areas that have scarce freshwater ***,application of seawater electrolysis is confronted by two major problems associated with catalysts employed for the anodic oxygen evolution reaction （OER） including the competitive hypochlorite evolution reaction（HCER） and strong chloridion （Cl–） triggered *** studies aimed at overcoming these problems,a facile method has been developed to synthesize a homologous CoS2heterojunction as an OER *** to a difference in work functions at the interface and increased electron density,this material has directed electron transfer and strong chloridion repulsion properties,*** have shown that CoS2achieves low overpotentials of 289 and 322 mV at 10 mA cm-2current density in respective alkaline （1 M KOH） and alkaline simulated seawater ***,the outstanding stability of CoS2is reflected in a negligible decline in activity during promotion of the OER for 100 *** of density functional theory calculations reveal that the homologous CoS2heterojunction promotes directed electron transport for optimizing adsorption/desorption of reactive species and heightens the Cl-adsorption energy for strongly repulsing Cl-,phenomena that enhance OER performance in alkaline simulated seawater.

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GFRF R-CNN:Object Detection Algorithm for Transmission Lines

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Computers, Materials & Continua 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 Convolutional Neural Network(Faster R-CNN)framework,specifically tailored for detecting small-scale electrical components 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 *** incorporation 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 compared to the standard Faster *** highlights the effectiveness of the proposed algorithm in identifying electrical components in high-resolution aerial images.

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

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