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Effect of lamellarization on the microstructure and mechanical properties of marine 10Ni5CrMoV steel

International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 402-413页

作者： Tao Zou Yanwu Dong Zhouhua jiang Shuyang du Yushuo Li School of Metallurgy Northeastern UniversityShenyang 110819China Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China Key Laboratory for Ecological Metallurgy of Multimetallic Ores(Ministry of Education) Northeastern UniversityShenyang 110819China

Multistage heat treatment involving quenching(Q),lamellarizing(L),and tempering(T)is applied to marine 10Ni5CrMoV *** microstructure and mechanical properties were studied by multiscale characterizations,and the kinetics of reverse austenite transformation,strain hardening behavior,and toughening mechanism were further *** lamellarized specimens possess low yield strength but high toughness,especially cryogenic *** leads to the development of film-like reversed austenite at the martensite block and lath boundaries,refining the martensite structure and lowering the equivalent grain *** analysis of austenite reversion based on the JMAK model shows that the isothermal transformation is dominated by the growth of reversed austenite,and the maximum transformation of reversed austenite is reached at the peak temperature(750℃).The strain hardening behavior based on the modified Crussard-Jaoul analysis indicates that the reversed austenite obtained from lamellarization reduces the proportion of martensite,significantly hindering crack propagation via martensitic transformation during the *** a consequence,the QLT specimens exhibit high machinability and low yield *** with the QT specimen,the ductile-brittle transition temperature of the QLT specimens decreases from-116 to-130℃due to the low equivalent grain size and reversed austenite,which increases the cleavage force required for crack propagation and absorbs the energy of external load,*** work provides an idea to improve the cryogenic toughness of marine 10Ni5CrMoV steel and lays a theoretical foundation for its industrial application and comprehensive performance improvement.

关键词： 10Ni5CrMoV steel lamellarizing reversed austenite cryogenic toughness ductile-brittle transition temperature

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Sleep duration and Factors Related to Sleep Loss in 3-14-Year-Old Children in Beijing： A Cross-Sectional Survey

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Chinese Medical Journal 2018年第15期131卷 1799-1807页

作者： Xiao-Dan Li Jun Tai Zhi-Fei Xu Gui-Xiang Wang Yun-Xiao Wu jiang-nan du Jie Zhang Xiao-Xia Peng Xin Ni Department of Otorhinolaryngology-Head and Neck Surgery Beijing Children's Hospital Capital Medical University Beijing 100045 China Department of Respiratory Beijing Children's Hospital Capital Medical University Beijing 100045 China Beijing Key Laboratory for Pediatric Diseases of Otolaryngology Head and Neck Surgery Beijing Pediatric Research Institute Beijing Children's Hospital Capital Medical University Beijing 100045 China Center for Clinical Epidemiology and Evidence-based Medicine Beijing children's Hospital Capital Medical University Beijing 100045 China

Background： It is known that short sleep duration adversely affects children＇s behavior and physical development. This study aimed to investigate the status of sleep duration in 3-14-year-old children in Beijing and explore the related factors of sleep loss with them. Methods： In this study, a cross-sectional study of random stratified cluster sampling was conducted on 3-14-year-old children and adolescents in Beijing. According to the proportion of children in each district and school, the final cohort included a total of 11 kindergartens, 7 primary schools, and 8 junior high schools from 7 districts of Beijing. Children of sampled classes were included, and their parents were invited to fill a series of questionnaires including the simplified Chinese version of Pediatric Sleep Questionnaire, Sleep Questionnaire Scale, and Hong Kong-Children Sleep Questionnaire about the performance of the last 6 months. Results： Out of the total 11,420 questionnaires, 9198 questionnaires were valid and effective with the response rate of 80.54%. The age of the investigated children was 8.8 ± 3.8 years, including 4736 males and 4462 females. The daily sleep duration of children in Beijing was 9.7 ± 0.7 h. The prevalence of sleep loss （〈9 h/day） of children in Beijing was 11.8%. The daily sleep duration of children aged 〈6, 6 ≤ age 〈11, and ≥11 years was 9.7 ± 0.6 h, 9.6 ± 0.6 h, and 9.5 ± 0.8 h, respectively. The sleep duration reduced significantly in children aged ≥11 years as compared to younger children in Beijing which was mainly contributed by the variation tendency of sleep duration on weekdays. The multivariate logistic regression analysis identified factors associated with sleep loss （P 〈 0.05）： male （odds ratio [OR] = 1.32, 95% confidence interval [CI ]： 1.15-1.51 ）, age ≥11 years （OR = 2.37, 95% CI： 1.92-2.93）, overweight （OR = 1.34, 95% CI： 1.17-1.54）, family history of snoring （OR - 1.35, 95% CI： 1.13-1.61 ） and activities before bedtime with watching TV （OR = 1.24, 95

关键词： Child Cross-Sectional Survey Sleep duration

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Sleep duration and Related Factors among Chinese children:A Cross-sectional Study

Sleep Duration and Related Factors among Chinese children:A ...

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中国睡眠研究会第十届全国学术年会

作者： Jun Tai Xiao-dan Li Gui-xiang Wang Yun-xiao Wu jiang-nan du Jie Zhang Xiao-xia Peng Zhi-fei Xu Xin Ni Department of Otorhinolaryngology-Head and Neck Surgery Beijing Children's HospitalCapital Medical University Beijing Key Laboratory for Pediatric Diseases of Otolaryngology Head and Neck SurgeryBeijing Pediatric Research InstituteBeijing Children's HospitalCapital Medical UniversityCapital Medical University Center for Clinical Epidemiology and Evidence-based Medicine Beijing children's HospitalCapital Medical University Respiratory Department Beijing Children's HospitalCapital Medical University

Background It is known short sleep duration adversely affects children’s behavior and physical *** duration and sleep habit vary substantially in children with different ages,areas and ***,our understanding on the sleep duration in Chinese children remains *** present study investigated the status of sleep durations in Chinese children and explored factors related to sleep *** A randomized,stratified,multi-stage cluster sampling method encompassed 11420 children in 25 schools from 7 districts in *** aged 3 to 14 years were included,and their parents were invited to fill sleep habit related questionnaires about the performance of the last 3 *** The final cohort included 4736 boys and 4462 girls with a mean age of 8.8±3.8 *** mean sleep durationof children ≥12 years of age was 9.4 h,which was significantly lower than those ＜ 12 years old（9.7 h）;this was in agreement with the trend of sleep durations of *** weekends and holidays,the sleep duration was approximately 10 h for most children and similar in all age ***（male）,age（≥12-year group）,overweight,and suburban residence were significantly correlated with sleep loss in children（p＜ 0.001）.A significantly high proportion of children with sleep loss displayed sleepiness during sitting and reading（19.1%）,in the car（31.4%）,in the afternoon（20.7%）,and after lunch（17.5%）.Conclusions The sleep duration reduced significantly in children ≥12 years of age as compared to younger children in *** such as gender（male）,age（≥12-year group）,overweight,and suburban residence are related to sleep *** ≥12 years of age older with sleep loss were likely to experience daytime sleepiness.

关键词： Chinese children sleep duration sleepiness sleep loss

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Photothermal probiotics delivery of photodynamic agents for enhanced immunogenic cell death within hypoxia center of solid tumors

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nano Research 2025年第1期18卷 642-652页

作者： Wen Luo Shiyu du Yateng jiang Bangshun He Jun Tang Jingjing Yang Yujun Song jiangsu Key Laboratory of Artificial Functional Materials State Key Laboratory of Analytical Chemistry for Life ScienceNational Laboratory of Solid State MicrostructuresCollege of Engineering and Applied SciencesNanjing UniversityNanjing 210023China Department of Laboratory Medicine Nanjing First HospitalNanjing Medical UniversityNanjing 210006China Department of Anesthesiology Jinling HospitalMedical School of Nanjing UniversityNanjing 210000China Department of Biochemistry and Molecular Biology School of Medicine&Holistic Integrative MedicineJiangsu Collaborative Innovation Center of Chinese Medicinal Resources IndustrializationNanjing University of Chinese MedicineNanjing 210023China

Resulting from harsh hypoxic environmental conditions,central cells in the core of solid tumors are usually more aggressive and malignant with a less stable ***,therapeutic agents with improved penetration for the activation of immunity in tumor centers exhibit promising potential in ***,polydopamine-coated Escherichia coli Nissle 1917(EcN)bearing chlorin e6(Ce6)-loaded and polyethyleneimine(PEI)-coated hollow manganese dioxide(shorted as EP-ChP)are applied for enhanced immunotherapy in deep *** accumulation in tumor center through hypoxia targeting,manganese dioxide is degradated under the tumor microenvironment with released Ce6 and thus generates reactive oxygen species(ROS)upon 660 nm laser irradiation,which can further lower thermalresistance of cancer cells via HSP90α*** to that,heating induced by polydopamine upon 808 nm laser irradiation can achieve effective tumor *** upon dual laser induces enhanced immunogenic cell death,while bacterial infections in tumor tissues also trigger innate *** bacteria-based approach provides enhanced antitumor immune responses in deep tumors with great potential in the reshaping of immunosuppression tumor microenvironment.

关键词： bacteria phototherapies immunotherapy hypoxia targeting tumor penetration

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Impacts of the annual cycle of background SST in the tropical Pacific on the phase and amplitude of ENSO

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 12-17页

作者： Song jiang Congwen Zhu Ning jiang State Key Laboratory of Severe Weather(LASW) Chinese Academy of Meteorological SciencesBeijingChina College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijingChina

The dominant annual cycle of sea surface temperature(SST)in the tropical Pacific exhibits an antisymmetric mode,which explains 83.4%total variance,and serves as a background of El Niño-Southern Oscillation(ENSO).However,there is no consensus yet on its anomalous impacts on the phase and amplitude of *** on data during 1982-2022,results show that anomalies of the antisymmetric mode can affect the evolution of ENSO on the interannual scale via Bjerknes feedback,in which the positive(negative)phase of the antisymmetric mode can strengthen El Niño(La Niña)in boreal winter via an earlier(delayed)seasonal cycle transition and larger(smaller)annual *** magnitude of the SST anomalies in the equatorial eastern Pacific can reach more than±0.3◦C,regulated by the changes in the antisymmetric mode based on random sensitivity *** reveal the spatial pattern of the annual cycle associated with the seasonal phase-locking of ENSO evolution and provide new insight into the impact of the annual cycle of background SST on ENSO,which possibly carries important implications for forecasting ENSO.

关键词： Annual cycle SST anomaly Antisymmetric mode ENSO

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Preparation of Co/S co-doped carbon catalysts for excellent methylene blue degradation

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 169-181页

作者： Haixu Li Haobo He Tiannan jiang Yunfei du Zhichen Wu Liang Xu Xinjie Wang Xiaoguang Liu Wanhua Yu Wendong Xue School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Beijing Jinyu Tongda Refractory Technologies Co. Ltd.Beijing 100085China

S and Co co-doped carbon catalysts were prepared via pyrolysis of MOF-71 and thiourea mixtures at 800℃at a mass ratio of MOF-71 to thiourea of 1:0.1 to effectively activate peroxymonosulfate(PMS)for methylene blue(MB)*** effects of two different mixing routes were identified on the MB degradation ***,the catalyst obtained by the alcohol solvent evaporation(MOF-AEP)mixing route could degrade 95.60%MB(50 mg/L)within 4 min(degradation rate:K=0.78 min^(-1)),which was faster than that derived from the direct grinding method(MOF-DGP,80.97%,K=0.39 min^(-1)).X-ray photoelectron spectroscopy revealed that the Co-S content of MOF-AEP(43.39at%)was less than that of MOF-DGP(54.73at%),and the proportion of C-S-C in MOF-AEP(13.56at%)was higher than that of MOF-DGP(10.67at%).Density functional theory calculations revealed that the adsorption energy of Co for PMS was -2.94 eV when sulfur was doped as C-S-C on the carbon skeleton,which was higher than that when sulfur was doped next to cobalt in the form of Co-S bond(-2.86 eV).Thus,the C-S-C sites might provide more contributions to activate PMS compared with ***,the degradation parameters,including pH and MOF-AEP dosage,were ***,radical quenching experiments and electron paramagnetic resonance(EPR)measurements revealed that ^(1)O_(2)might be the primary catalytic species,whereas·O~(2-)might be the secondary one in degrading MB.

关键词： advanced oxidation process alcohol solvent evaporation hydrogen bond S and Co co-doped carbon catalysts wastewater remediation

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Effects of carbon content on the microstructure and tensile properties of a low-density steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 391-401页

作者： Yongxuan Shang Mingyu Fan Shuyong jiang Zhongwu Zhang Key Laboratory of Superlight Materials and Surface Technology Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China State Key Laboratory of Metal Material for Marine Equipment and Application Iron&Steel Research Institute of Ansteel Group CorporationAnshan 114009China

Carbon can change the phase components of low-density steels and influence the mechanical *** this study,a new method to control the carbon content and avoid the formation ofδ-ferrite by decarburization treatment was *** microstructural changes and mechanical characteristics with carbon content induced by decarburization were systematically ***-Jaoul(C-J)analysis was employed to examine the work hardening characteristics during the tensile *** decarburization by heat treatments,the carbon content within the austenite phase decreased,while Mn and Al were almost unchanged;this made the steel with full austenite transform into the austenite and ferrite dual ***,(Ti,V)C carbides existed in both matrix phase and the mole fraction almost the *** addition,the formation of other carbides *** loss induced a decrease in strength due to the weakening of the carbon solid *** the steel with the single austinite,the deformation mode of austenite was the dislocation planar glide,resulting in the formation of *** the dual-phase steel,the deformation occurred by the dislocation planar glide of austenite first,with the increase in strain,the cross slip of ferrite took place,forming dislocation cells in *** the late stage of deformation,the work hardening of austinite increased rapidly,while that of ferrite increased slightly.

关键词： low-density steels carbon content decarburization strengthening mechanisms work hardening behavior

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From text to image:challenges in integrating vision into ChatGPT for medical image interpretation

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Neural Regeneration Research 2025年第2期20卷 487-488页

作者： Shunsuke Koga Wei du Department of Pathology and Laboratory Medicine Hospital of the University of PennsylvaniaPhiladelphiaPAUSA

Large language models(LLMs),such as ChatGPT developed by OpenAI,represent a significant advancement in artificial intelligence(AI),designed to understand,generate,and interpret human language by analyzing extensive text *** potential integration into clinical settings offers a promising avenue that could transform clinical diagnosis and decision-making processes in the future(Thirunavukarasu et al.,2023).This article aims to provide an in-depth analysis of LLMs’current and potential impact on clinical *** ability to generate differential diagnosis lists underscores their potential as invaluable tools in medical practice and education(Hirosawa et al.,2023;Koga et al.,2023).

关键词： image diagnosis text

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Zinc-based fiber-shaped rechargeable batteries:Insights into structures,electrodes,and electrolytes

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nano Research 2025年第1期18卷 278-293页

作者： Xuan Zhang Hongcheng Zhang Mengxiang Chen Jingqi Lu Evgeny Zhuravlev Jing jiang Pin Liu Shengyang Dong du Yuan Guoyin Zhu Lianbo Ma Yizhou Zhang Institute of Advanced Materials and Flexible Electronics(IAMFE) School of Chemistry and Materials ScienceNanjing University of Information Science and TechnologyNanjing 210044China School of Materials Science and Engineering Anhui University of TechnologyMaanshan 243002China College of Materials Science and Engineering Changsha University of Science and TechnologyChangsha 410004China

The rapid evolution of flexible wearable electronics has spurred a growing demand for energy storage devices,characterized by low-cost manufacturing processes,high safety standards,exceptional electrochemical performance and robust mechanical *** novel flexible devices,fiber-shaped batteries(FSBs)have emerged as prominent solutions exceptionally suited to future applications,owing to their unique one-dimensional(1D)architecture,remarkable flexibility,potential for miniaturization,adaptability to deformation and compatibility with the conventional textile *** the forefront research on fiber-shaped batteries,zincbased FSBs(ZFSBs)have garnered significant attentions,featured by the promising electrochemical properties of metallic *** enthusiasm is driven by the impressive capacity of Zn(820 mAh·g^(-1))and its low redox potential(Zn/Zn^(2+):-0.76 V *** hydrogen electrode).This review aims to consolidate recent achievements in the structural design,fabrication processes and electrode materials of flexible ***,we highlight three representative structural configurations:parallel type,twisted type and coaxial *** also place special emphasis on electrode modifications and electrolyte ***,we delve into the promising development opportunities and anticipate future challenges associated with ZFSBs,emphasizing their potential roles in powering the next generation of wearable electronics.

关键词： zinc-based batteries fiber-shape parallel type twisted type coaxial type

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Thermally controlled large deformation in temperaturesensitive hydrogels bilayers

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International Journal of Smart and nano Materials 2021年第4期12卷 450-471页

作者： Jianying Hu nan jiang Jianke du Department of Mechanics and Engineering Science Smart Materials and Advanced Structure LaboratorySchool of Mechanical Engineering and MechanicsNingbo UniversityNingboChina State Key Laboratory for Strength and Vibration of Mechanical Structures Xi’an Jiaotong UniversityXi’anChina

The present work investigates the thermally controlled deformation characteristics in temperature-sensitive hydrogels *** free energy density for temperature-sensitive hydrogels is modified,upon which the finite element model is developed and implemented through user-defined material subroutine UHYPER in the commercial software *** modified UHYPER implementation allows for more vividly depicting the continuous deformation in phase temperature region for temperature-sensitive *** thermally controlled cases of temperature-sensitive hydrogel including grippers,self-folding boxes,thermally driven origami are presented to illustrate a wide array of complex interesting applications or ***,we develop a simple model to theoretically calculate the bending angle of the temperature-sensitive hydrogel bilayers,which has been validated by the finite element simulation *** study can provide more insights for optimal design in thermally controlled hydrogels structures.

关键词： Temperature-sensitive hydrogels thermally controlled deformation swelling-induced bending

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