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

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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

Microstructural evolution during the progressive transformation-induced plasticity effect in a Fe-0.1C-5Mnmedium manganese steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 369-379页

作者： mei Zhang Wenhao li Yangfei Chen Yang Jiang Xiaofei Guo Han Dong School of Materials Science and Engineering Shanghai UniversityShanghai 200444China State Key Laboratory of Advanced Special Steel Shanghai UniversityShanghai 200444China

The microstructural evolution of a cold-rolled and intercritical annealed medium-Mn steel(Fe-0.10C-5Mn)was investigated during uniaxial tensile ***-situ observations under scanning electron microscopy,transmission electron microscopy,and X-ray diffraction analysis were conducted to characterize the progressive transformation-induced plasticity process and associated fracture initiation *** findings were discussed with the local strain measurements via digital image *** results indicated that Lüders band formation in the steel was limited to 1.5%strain,which was mainly due to the early-stage martensitic phase transformation of a very small amount of the less stable large-sized retained austenite(RA),which led to localized stress concentrations and strain hardening and further retardation of *** small-sized RA exhibited high stability and progressively transformed into martensite and contributed to a stably extended Portevin-Le Chatelier *** volume fraction of RA gradually decreased from 26.8%to 8.2%prior to *** the late deformation stage,fracture initiation primarily occurred at the austenite/martensite and ferrite/martensite interfaces and the ferrite phase.

关键词： medium-Mn steel retained austenite progressive transformation-induced plasticity effect local strain fracture initiation

猪繁殖与呼吸综合征病毒垂直传播及其危害研究进展

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中国畜牧兽医 2015年第5期42卷 1311-1317页

作者：李桃梅赖志崔立上海交通大学农业与生物学院上海200240 上海伊科拜克兽药销售有限公司上海200042 上海创宏生物科技有限公司上海201419

猪繁殖与呼吸综合征病毒(PRRSV)感染引起的繁殖障碍在妊娠早期表现为母猪受胎率低、不规律返情及孕早期流产;怀孕后半期流产、早产,产死胎、木乃伊胎及弱仔等。先天感染的仔猪抵抗继发感染的能力低,可持续排毒并感染周围的阴性动物。PR... 详细信息

猪繁殖与呼吸综合征病毒(PRRSV)感染引起的繁殖障碍在妊娠早期表现为母猪受胎率低、不规律返情及孕早期流产;怀孕后半期流产、早产,产死胎、木乃伊胎及弱仔等。先天感染的仔猪抵抗继发感染的能力低,可持续排毒并感染周围的阴性动物。PRRSV穿过胎盘屏障感染胎儿很可能是经巨噬细胞/单核细胞介导的,并在母胎界面造成病理损伤,病毒在胎儿着床点的复制可能是导致胎儿死亡和母猪流产的原因。预防PRRSV垂直传播必须控制母猪感染PRRSV,缩短已感染母猪的病毒血症持续时间,此外,通过生物安全、限制猪群流动和严格的消毒措施控制水平传播,通过疫苗免疫和药物保健消除易感动物。作者概述了妊娠各阶段母猪感染PRRSV发生垂直传播的情况及其后续的繁殖障碍。

关键词：猪繁殖与呼吸综合征病毒垂直传播先天感染病毒血症

阻塞性睡眠呼吸暂停共病抑郁障碍的研究现状及进展

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四川大学学报（医学版） 2023年第2期54卷 252-256页

作者：李桃美谭璐唐向东四川大学华西医院睡眠医学中心成都610041

阻塞性睡眠呼吸暂停(obstructive sleep apnea, OSA)和抑郁障碍均为常见的疾病,二者存在很多相似的临床症状,如睡眠紊乱、疲乏、注意力不集中和认知功能损害。两者常同时存在,这可能跟两者存在共同的病理生理学改变有关,包括下丘脑-垂体... 详细信息

阻塞性睡眠呼吸暂停(obstructive sleep apnea, OSA)和抑郁障碍均为常见的疾病,二者存在很多相似的临床症状,如睡眠紊乱、疲乏、注意力不集中和认知功能损害。两者常同时存在,这可能跟两者存在共同的病理生理学改变有关,包括下丘脑-垂体-肾上腺(hypothalamic-pituitary-adrenal, HPA)轴激活、慢性低度炎症、氧化应激、肠道微生物改变和神经递质改变等。OSA与抑郁障碍共病后,相互影响、相互恶化,加重疾病的严重程度,增加心血管代谢性疾病的发生风险,同时还会增加治疗难度。本文从OSA共病抑郁障碍的流行病学、可能机制、危害和治疗四个方面进行综述。本综述将有助于提高临床医生对二者共病的认识,以期能够早期筛查、及时诊疗和改善预后。未来需要更多的研究探索两者共病及干预对心血管代谢的影响。

关键词：阻塞性睡眠呼吸暂停抑郁障碍共病机制持续气道正压通气

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关节滑膜结核的X线、CT及MRI表现

中华放射学杂志 2006年第9期40卷 945-947页

作者：于静红陶美丽尤壮志于化东内蒙古医学院第二附属医院影像科呼和浩特010030 内蒙古满洲里市中蒙医院放射科

目的分析关节滑膜结核的 X 线、CT 及 MRI 表现,探讨 MRI 在早期关节滑膜结核诊断中的作用。方法回顾分析14例经手术病理证实的关节滑膜结核的影像学资料并进行总结。14例均行常规 X 线正侧位摄片及 MR 平扫,其中3例(膝关节2例、肘关节1... 详细信息

目的分析关节滑膜结核的 X 线、CT 及 MRI 表现,探讨 MRI 在早期关节滑膜结核诊断中的作用。方法回顾分析14例经手术病理证实的关节滑膜结核的影像学资料并进行总结。14例均行常规 X 线正侧位摄片及 MR 平扫,其中3例(膝关节2例、肘关节1例)同时行 CT 平扫。结果 X 线表现:14例中关节肿胀8例,关节间隙变窄7例,关节骨质破坏4例。CT 表现:3例均显关节囊肿胀、积液。2例关节面见小破坏灶,内见点状死骨。MRI 表现:14例病变关节均表现为滑膜不同程度增生肥厚,其中8例见增生滑膜呈结节状、团块状,增厚滑膜在 T_1WI 均呈低信号,T_2WI 上为不均匀略高信号7例,较明显高信号6例,1例 T_2WI 上呈中等偏低信号。关节内及关节周围积液7例。关节面边缘破坏7例。关节软骨变薄,部分或大部分破坏消失11例。关节骨端邻近骨质骨髓水肿7例。结论 MRI 对滑膜结核的早期诊断、鉴别诊断帮助较大,优于 X 线和 CT。

关键词：结核,骨关节诊断显像

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化脓性肌炎的MRI表现

中国介入影像与治疗学 2012年第8期9卷 600-604页

作者：于静红陶美丽尤壮志钟秀李伟内蒙古医学院第二附属医院影像科内蒙古呼和浩特010030

目的分析化脓性肌炎的MRI表现特点。方法回顾分析我院经临床手术及病理证实的8例化脓性肌炎患者的MRI表现。检查序列包括SE T1W、TSE T2W、STIR,其中4例同时接受增强SE T1W扫描。结果 8例中1例发生于腰大肌,余7例均发生于下肢肌肉。MRI... 详细信息

目的分析化脓性肌炎的MRI表现特点。方法回顾分析我院经临床手术及病理证实的8例化脓性肌炎患者的MRI表现。检查序列包括SE T1W、TSE T2W、STIR,其中4例同时接受增强SE T1W扫描。结果 8例中1例发生于腰大肌,余7例均发生于下肢肌肉。MRI显示所有8例受累肌肉弥漫性肿大,T2WI表现为较明显不均匀高信号,STIR为明显高信号;T1WI呈与邻近肌肉等、稍低或稍高信号改变,邻近肌间隙水肿。4例病灶中见单个或多个T1WI低信号、T2WI高信号脓肿形成,周围脓肿壁在T1WI上为相对高信号。增强扫描中2例受累肌肉呈明显弥漫性强化,2例脓肿形成呈环状强化,脓腔及小的炎性坏死区无强化。结论 MRI可清晰显示化脓性肌炎病变部位、特点及范围,具有重要诊断价值。

关键词：化脓性肌炎磁共振成像

Exosomes originating from neural stem cells undergoing necroptosis participate in cellular communication by inducing TSC2 upregulation of recipient cells following spinal cord injury

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Neural Regeneration Research 2025年第11期20卷 3273-3286页

作者： Shiming li Jianfeng li Guoliang Chen tao lin Penghui Zhang Kuileung Tong Ningning Chen Shaoyu liu Shenzhen Key Laboratory of Bone Tissue Repair and Translational Research Department of Orthopedic SurgeryThe Seventh Affiliated HospitalSun Yat-sen UniversityShenzhenGuangdong ProvinceChina Department of Orthopedic Surgery The First Affiliated Hospital of Jinan UniversityGuangzhouGuangdong ProvinceChina Department of Orthopedics and Traumatology Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina Department of Orthopedic Surgery The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina Department of Orthopedic Surgery The First Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina

We previously demonstrated that inhibiting neural stem cells necroptosis enhances functional recovery after spinal cord *** exosomes are recognized as playing a pivotal role in neural stem cells exocrine function,their precise function in spinal cord injury remains *** investigate the role of exosomes generated following neural stem cells necroptosis after spinal cord injury,we conducted singlecell RNA sequencing and validated that neural stem cells originate from ependymal cells and undergo necroptosis in response to spinal cord ***,we established an in vitro necroptosis model using neural stem cells isolated from embryonic mice aged 16-17 days and extracted *** results showed that necroptosis did not significantly impact the fundamental characteristics or number of *** sequencing of exosomes in necroptosis group identified 108 differentially expressed messenger RNAs,104 long non-coding RNAs,720 circular RNAs,and 14 microRNAs compared with the control *** of a competing endogenous RNA network identified the following hub genes:tuberous sclerosis 2(Tsc2),solute carrier family 16 member 3(Slc16a3),and forkhead box protein P1(Foxp1).Notably,a significant elevation in TSC2 expression was observed in spinal cord tissues following spinal cord ***2-positive cells were localized around SRY-box transcription factor 2-positive cells within the injury ***,in vitro analysis revealed increased TSC2 expression in exosomal receptor cells compared with other *** assessment of cellular communication following spinal cord injury showed that Tsc2 was involved in ependymal cellular communication at 1 and 3 days post-injury through the epidermal growth factor and midkine signaling *** addition,Slc16a3 participated in cellular communication in ependymal cells at 7 days post-injury via the vascular endothelial growth factor and macrophage migration inhibitory factor signaling

关键词： cellular communication competing endogenous RNA exosomes Foxp1 necroptosis neural stem cells Slc16a3 spinal cord injury transcriptome sequencing Tsc2

Plasmonic tandem heterojunctions enable high-efficiency charge transfer for broad spectrum photocatalytic hydrogen production

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Journal of Energy Chemistry 2025年第1期100卷 710-720页

作者： Wenxuan Chen Xiu-Qing Qiao Guo Hui Bojing Sun Dongfang Hou meidi Wang Xueqian Wu tao Wu Dong-Sheng li College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Hubei Three Gorges Laboratory College of Chemistry and Materials Science and Guangdong Provincial Key Laboratory of Supramolecular Coordination Chemistry Jinan University

Rational engineering of semiconductor photocatalysts for efficient hydrogen production is of great significance but still challenging,primarily due to the limitations in charge transfer ***,a fascinating plasmonic tandem heterojunction with the hc-CdS/Mo2C@C heterostructure is aimfully prepared for effectively promoting the charge separation kinetics of the CdS photocatalyst via the synergistic strategy of phase junction,Schottky junction,and photothermal *** difference in atomic configuration between cubic-CdS （c-CdS） and hexagonal-CdS （h-CdS） leads to effective charge separation through a typical Ⅱ charge transfer mechanism,and plasmonic Schottky junction further extracts the electrons in the hc-CdS phase junction to realize gradient charge ***,the photothermal effect of Mo2C@C helps to expand the light absorption,accelerate charge transfer kinetics,and reduce the hydrogen evolution energy *** carbon layer provides a fast channel for charge transfer and protects the photocatalyst from *** a result,the optimized hc-CMC photocatalyst exhibits a significantly high photocatalytic H2production activity of 28.63 mmol/g/h and apparent quantum efficiency of 61.8%,surpassing most of the reported *** study provides a feasible strategy to enhance the charge transfer kinetics and photocatalytic activity of CdS by constructing plasmonic tandem heterogeneous junctions.

关键词： Heterojunctions LSPR Photocatalyst Phase junction Schottky junction Photothermal effect

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多囊卵巢综合征蛋白质组学研究进展

生殖医学杂志 2019年第5期28卷 560-563页

作者：陈莉陶丽梅王芳兰州大学第二医院兰州730030

多囊卵巢综合征(PCOS)是女性最常见的生殖内分泌疾患之一。近年来,利用蛋白质组学对PCOS发病机制进行了研究。本文对PCOS患者的血液、卵巢、子宫内膜、骨骼肌、卵泡液、颗粒细胞、脂肪组织以及T淋巴细胞的蛋白质组学研究进行总结,为临... 详细信息

多囊卵巢综合征(PCOS)是女性最常见的生殖内分泌疾患之一。近年来,利用蛋白质组学对PCOS发病机制进行了研究。本文对PCOS患者的血液、卵巢、子宫内膜、骨骼肌、卵泡液、颗粒细胞、脂肪组织以及T淋巴细胞的蛋白质组学研究进行总结,为临床早期诊断与对因治疗PCOS提供新思路。

关键词：多囊卵巢综合征蛋白质组学蛋白质