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中国东北地区张广才岭中生代岩浆岩的性质与构造意义

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世界地质 2024年第3期43卷 336-352页

作者：李成强周建波王红燕陈卓李功宇吉林大学地球科学学院长春130061 自然资源部东北亚矿产资源评价重点实验室(吉林大学) 长春130061

通过年代学和地球化学对比研究发现,中国东北张广才岭地区在晚古生代至早中生代的构造演化历史可以分为3个阶段:①晚二叠世-中三叠世(266~234 Ma),受黑龙江洋的西向俯冲影响,发育Ⅰ型花岗岩;②晚三叠世-早侏罗世(224~194 Ma),黑龙江洋... 详细信息

通过年代学和地球化学对比研究发现,中国东北张广才岭地区在晚古生代至早中生代的构造演化历史可以分为3个阶段:①晚二叠世-中三叠世(266~234 Ma),受黑龙江洋的西向俯冲影响,发育Ⅰ型花岗岩;②晚三叠世-早侏罗世(224~194 Ma),黑龙江洋闭合后佳木斯-兴凯地块和松辽地块碰撞拼贴,形成Ⅰ型和少量A型花岗岩;③早-中侏罗世(194~163 Ma),受到两地块碰撞-拼贴后的伸展作用及古太平洋的西向俯冲作用的综合影响,发育A_(2)+Ⅰ型花岗岩。结合区域研究新进展,认为古亚洲洋向古太平洋转换发生在晚三叠-早侏罗世,黑龙江洋是连接二者转换的关键枢纽。

关键词：花岗岩岩浆期次构造体制转换古太平洋晚古生代-早中生代张广才岭

Formation of South Tianshan suture and its geological significance

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Global Geology 2023年第1期26卷 9-20页

作者： LI Haodong zhou jianbo College of Earth Sciences Jilin UniversityChangchun 130061China

South Tianshan–Solonker suture,is the largest and southernmost suture within the Central Asian orogenic belt(CAOB).It records the ultimate collision between Tarim–North China cratons and Siberia craton,and is commonly interpreted as marking the eventual closure of Paleo-Asian *** Tianshan suture belongs to the western segment of the suture zone,and its evolutionary features are important for defining the formation age of the South Tianshan–Solonker *** this paper,the authors review the geochronological,geochemical,petrographic,and paleontological evidence within South Tianshan suture to delineate its formation era and closure characteristics,and thus further revealing the ultimate evolutionary pattern of the western segment of Paleo-Asian *** suture records strong plate collision before Late Carboniferous,forming a series of high-pressure metamorphic rocks,characterized by the presence of blue schist,eclogite and mica *** Permian,the whole area was under a relatively stable post-orogenic setting,with the formation of bimodal volcanic rocks,post-collisional granites,and terrestrial *** facies gradually changed from marine to either lacustrine or fluvial during this *** Early Permian granite dike crosscuts the HP metamorphic belt,and the HP metamorphic rocks also underwent retrograde metamorphism at this time,indicating the formation of the South Tianshan suture was earlier than ***,the western section of Paleo-Asian Ocean closed during Late Carboniferous,and Tarim Craton moved northward to collide with Kazakhstan–Yili Block,leading to the formation of the South Tianshan suture.

关键词： South Tianshan suture Paleo-Asian Ocean Central Asian orogenic belt plate accretion/collision subduction polarity

Strengthening mechanism of different morphologies of nanosized MSH on tribological performance of phosphate/MoS2 bonded solid lubricating coatings

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Friction 2024年第11期12卷 2563-2575页

作者： Zhengchao XI jianbo SUN Lei CHEN Haixia CUI Yanjun MA Huidi zhou Jianmin CHEN State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Aerospace Research Institute of Materials&Processing Technology Beijing 100076China

Magnesium silicate hydroxides(MSHs)with granular,schistose,and tubular morphologies were separately incorporated to enhance the tribological properties of phosphate/MoS2 composite *** nano-schistose MSH demonstrated superior tribological performance due to its effective interactions with the worn surface and frictional synergies with solid *** of nano-schistose MSH decreased the friction coefficient of composite coatings by about 34.7%and increased the anti-wear performance of composite coatings by about thirteen ***-schistose MSH facilitated the formation of a friction-induced multi-layer heterogenous slipping structure with layered solid lubricants at the friction ***,tribo-chemical reactions between nano-schistose MSH and worn surface promoted the in-situ formation of a cermet supporting film,and this also induced the gradual in-situ formation of a lubrication film on the top of worn ***,the contact state between tribo-pairs was timely regulated and the invalidation of the nanocomposite slipping structure was effectively restrained during the friction *** a result,the service life of the phosphate composite coatings was significantly extended and further abrasion on the worn surface was notably reduced.

关键词： nano-sized magnesium silicate hydroxide(MSH) morphology regulation nanocomposite slipping structure tribo-film

Overvoltage Calculation Method for Sending System Under DC Fault Disturbance Considering the Influence of Renewable Energy

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CSEE Journal of Power and Energy Systems 2024年第5期10卷 1865-1875页

作者： Haoyue Gong jianbo Guo Qiang Guo Jian Zhang Qinyong zhou Libo Zhang China Electric Power Research Institute Beijing 100192China

Bipolar blocking and commutation failure in the renewable energy transmission system through ultra-high voltage direct current will produce significant temporary *** paper analyzes the physical process of sending end grid overvoltage caused by two types of DC faults and establishes a DC overvoltage model considering renewable energy *** to characteristics of the sending end grid,the influence of the system equivalent impedance,the proportion of renewable energy output,the active and reactive power coefficients of the renewable energy sources during the low voltage ride through process on the overvoltage is analyzed respectively,and the relationship between the proportion of renewable energy output and the short-circuit ratio under the overvoltage constraint is *** validity and practicality of the model and analysis method proposed in this paper are verified by combining the typical transmission system at the sending end of the actual power grid and regional power grid systems.

关键词： Bipolar blocking commutation failure low voltage ride through renewable energy temporary overvoltage

内镜黏膜下剥离术治疗胃底腺型肿瘤(附4例报告)

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中国内镜杂志 2024年第8期30卷 80-84页

作者：吴杨庆周建波方莹桑建忠宋奇峰黄戬浙江大学医学院附属第二医院余姚分院(余姚市人民医院)消化内科浙江余姚315400

目的总结4例胃底腺型肿瘤的内镜下特点和临床诊治情况。方法回顾性分析2021年7月-2023年12月该院诊治的4例胃底腺型肿瘤的临床资料。结果4例胃底腺型肿瘤均经内镜黏膜下剥离术(ESD)完整切除,术后恢复良好,无手术并发症,随访无复发和转... 详细信息

目的总结4例胃底腺型肿瘤的内镜下特点和临床诊治情况。方法回顾性分析2021年7月-2023年12月该院诊治的4例胃底腺型肿瘤的临床资料。结果4例胃底腺型肿瘤均经内镜黏膜下剥离术(ESD)完整切除,术后恢复良好,无手术并发症,随访无复发和转移。结论ESD治疗胃底腺型肿瘤安全、可靠,可完整切除病灶。

关键词：胃底腺型肿瘤完整切除内镜黏膜下剥离术(ESD)

古太平洋板块俯冲-增生时限:饶河增生杂岩的地球化学和年代学制约

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岩石学报 2020年第3期36卷 703-725页

作者：韩伟周建波吉林大学地球科学学院长春130061

饶河杂岩作为那丹哈达增生杂岩的主体,是古太平洋板块西向俯冲的直接证据。饶河增生杂岩组成与增生过程的研究对限定古太平洋板块向欧亚大陆的俯冲与增生过程具有重要的指示意义。本文在野外地质调查和饶河大岱地区大比例尺填图基础上,... 详细信息

饶河杂岩作为那丹哈达增生杂岩的主体,是古太平洋板块西向俯冲的直接证据。饶河增生杂岩组成与增生过程的研究对限定古太平洋板块向欧亚大陆的俯冲与增生过程具有重要的指示意义。本文在野外地质调查和饶河大岱地区大比例尺填图基础上,明确了饶河杂岩主要由枕状玄武岩、辉长岩以及大洋板块沉积地层(OPS)组成,这些岩石均呈构造透镜体状分布在海沟沉积物中,并被中生代花岗质岩脉所穿切,因此为限定饶河增生杂岩的组成、增生和就位时代提供了关键制约。地球化学数据表明玄武岩具有洋岛玄武岩(OIB)的地球化学属性。LA-ICPMS锆石测试结果表明该地区玄武岩和辉长岩的形成时代分别为166±2Ma和214±5Ma,限定了饶河杂岩中镁铁质-超镁铁质岩石的形成时代为晚三叠世至中侏罗世。结合该区粉砂质泥岩和砂岩的沉积时代下限分别为167±3Ma和133±4Ma,表明饶河杂岩的增生时代为167~133Ma,此外样品的碎屑年龄信息表明基质的物源为邻近的佳木斯地块和中亚造山带东段,其中前寒武的碎屑年龄在中国东北的多个陆块均有出现,可能源于早前存在的前寒武纪基底。本文测得侵入饶河杂岩的2个二长花岗岩形成年龄分别为126±1Ma和105±2Ma,表明饶河杂岩中的花岗岩脉主要形成于两个阶段,其中较老的花岗岩侵入体进一步限定了饶河杂岩的最终就位时代为133Ma至126Ma,表明古太平洋板块在中侏罗世至早白垩世存在西向俯冲-增生作用,为古太平洋板块的构造演化提供了重要的制约。

关键词：饶河增生杂岩锆石U-Pb年龄增生时代和就位时代古太平洋板块俯冲

TSP-1 promotes glomerular mesangial cell proliferation and extracellular matrix secretion in Thy-1 nephritis rats

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The Journal of Biomedical Research 2011年第6期25卷 402-410页

作者： Wen Qiu Yan Li jianbo zhou Chenhui Zhao Jing Zhang Kai Shan Dan Zha Yingwei Wang Dcpartment of Microbiology and Immunology Nanjing Medical University Nanjing Jiangsu 210029 China School of Clinical Medicine Jiangsu University Zhenjiang Jiangsu 212013 China.

The proliferation of glomerular mesangial cells （GMC） and secretion of the extracellular matrix （ECM） in rat with Thy-1 nephritis （Thy-lN） resembling human mesangioproliferative glomerulonephritis have been explored for many years; however, the molecular mechanisms of GMC proliferation and ECM production remain unclear. Our previous studies have demonstrated that the thrombospondin-1 （TSP-1） gene was involved in mediating rat GMC proliferation and ECM synthesis induced by sublytic C5b-9 in vitro. 111 the present study, the roles of the TSP-1 gene in GMC proliferation, ECM production, and urinary protein secretion in Thy-lN rats were determined by using TSP-1 small hairpin RNA, and the results revealed that silencing of the TSP-1 gene in rat renal tissues could diminish GMC proliferation （P 〈 0.01） and ECM secretion （P 〈 0.01） as well as urinary protein secretion （P 〈 0.05） in Thy-lN rats. Together, the current findings suggested that TSP-1 gene expression was required for GMC proliferation and ECM production in Thy-lN rats.

关键词： Thy-1 nephritis glomerular mesangial cells (GMCs) proliferation extracellular matrix thrombospondin-1 ( TSP-1)

Effect of Heat Treatment on Microstructure and Mechanical Behavior of Cu-Bearing 316L Stainless Steel Produced by Selective Laser Melting

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Acta Metallurgica Sinica(English Letters) 2024年第1期37卷 169-180页

作者： Huan Yang Ying Liu jianbo Jin Kunmao Li Junjie Yang Lingjian Meng Chunbo Li Wencai Zhang Shengfeng zhou Sino-German College of Intelligent Manufacturing Shenzhen Technology UniversityShenzhen518118China Institute of Advanced Wear and Corrosion Resistance and Functional Materials Jinan UniversityGuangzhou510632China Department of Orthopedics First Affiliated Hospital of Jinan UniversityGuangzhou510632China

Cu-bearing stainless steels(SSs)with high strength,excellent plasticity,and effective antimicrobial properties hold significant potential for applications in the marine *** this study,Cu-bearing SSs with copper ranging from 0 to 6.0 wt%were successfully prepared using selective laser melting(SLM)*** the Cu-bearing SSs with different copper contents,the effect of heat treatment on the microstructural and mechanical behaviors was studied *** observations revealed that the subgrain size of Cu-bearing SSs increased with heat treatment at 500℃ and 700℃ for 6 ***,the tensile strength and elongation increased after the heat treatment temperature due to the combined effect of dislocations,twins,andε-Cu precipitated ***,after heat treatment at 700℃,the SLM4.5Cu sample exhibited an abnormal rise in tensile strength and *** finding suggests that the diffusion strengthening caused byε-Cu precipitates exceeded the stacking fault ***,the tensile strength and elongation reached 693.32 MPa and 56.94%,*** work provides an efficient approach for preparing Cu-bearing SSs with exceptional strength and plasticity.

关键词： Selective laser melting Cu-bearing stainless steel(SS) Heat treatment Mechanical properties

MiR-4465-modified mesenchymal stem cell-derived small extracellular vesicles inhibit liver fibrosis development via targeting LOXL2 expression

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2024年第7期25卷 594-604页

作者： Yanjin WANG Yifei CHEN Fuji YANG Xiaolong YU Ying CHU Jing zhou Yongmin YAN jianbo XI Department of Laboratory Medicine Wujin Hospital Affiliated with Jiangsu UniversityJiangsu UniversityChangzhou 213017China Department of Laboratory Medicine School of MedicineJiangsu UniversityZhenjiang 212013China Changzhou Key Laboratory of Molecular Diagnostics and Precision Cancer Medicine Wujin Clinical College of Xuzhou Medical UniversityChangzhou 213017China

Liver fibrosis is a significant health burden,marked by the consistent deposition of ***,the currently available treatment approaches for this condition are far from *** oxidase-like protein 2(LOXL2)secreted by hepatic stellate cells(HSCs)is a crucial player in the cross-linking of matrix collagen and is a significant target for treating liver *** stem cell-derived small extracellular vesicles(MSC-sEVs)have been proposed as a potential treatment option for chronic liver *** studies have found that MSC-sEV can be used for microRNA delivery into target cells or *** is currently unclear whether microRNA-4465(miR-4465)can target LOXL2 and inhibit HSC ***,it is uncertain whether MSC-sEV can be utilized as a gene therapy vector to carry miR-4465 and effectively inhibit the progression of liver *** study explored the effect of miR-4465-modified MSC-sEV(MSC-sEVmiR-4465)on LOXL2 expression and liver fibrosis *** results showed that miR-4465 can bind specifically to the promoter of the LOXL2 gene in ***,MSC-sEVmiR-4465 inhibited HSC activation and collagen expression by downregulating LOXL2 expression in ***-sEVmiR-4465 injection could reduce HSC activation and collagen deposition in the CCl4-induced mouse ***-sEVmiR-4465 mediating via LOXL2 also hindered the migration and invasion of HepG2 *** conclusion,we found that MSC-sEV can deliver miR-4465 into HSC to alleviate liver fibrosis via altering LOXL2,which might provide a promising therapeutic strategy for liver diseases.

关键词： Mesenchymal stem cell(MSC) Small extracellular vesicle(sEV) MicroRNA-4465(miR-4465) Hepatic stellate cell(HSC) Liver fibrosis