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Modelling of low-temperature exhumation rate in Dabie Mountain based on (U-Th)/He and fission-track thermochronological data

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Science China Earth Sciences 2006年第10期49卷 1009-1019页

作者： DING Ruxin ZHOU Zuyi xu Changhai LIU yuzhu CHENG Hao xu Fei State Key Laboratory of Marine Geology Tongji UniversityShanghai 200092China State Key Laboratory of Marine GeologyTongji UniversityShanghai 200092China State Key Laboratory of Marine GeologyTongji UniversityShanghai 200092China State Key Laboratory of Marine GeologyTongji UniversityShanghai 200092China State Key Laboratory of Marine GeologyTongji UniversityShanghai 200092China State Key Laboratory of Marine GeologyTongji UniversityShanghai 200092China

While the high-temperature exhumation process in the Dabie Mountain has been well documented, the low-temperature exhumation of this area since Cretaceous, especially since Late Cretaceous, is relatively less studied. Low-temperature thermochronology provides one of the important approaches to solve this problem. Based on the data of fission track and (U-Th)/He analysis of apaptites and zircons from the granitoid and metamorphic rocks in the Dabie Mountain, this paper applies Mancktelow’s and Braun’s methods to estimating the exhumation rates and to drawing the regional differential exhumation pattern since Cretaceous, especially since Late Cretaceous by taking into consideration factors such as heat transport, heat advection, topography and heat production, which could influence geothermal field in the shallow crust. Since Cretaceous, the exhumation rate (0.08-0.10 km/Ma) in the region around Tiantangzhai and in the south of Tanlu fault zone is larger than the rate (0.04-0.07 km/Ma) in other areas of the Dabie Mountain. The regional differential exhumation pattern might be related to the push-up effect caused by differential strike-slip movement along NNE-trending faults.

关键词： Dabie Mountain, fission track, (U-Th)/He, modelling, exhumation.

掉头车道设置在交叉口最右侧车道的应用——以黄山路-新大路交叉口为例

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城市道桥与防洪 2024年第5期 69-72,M0008,M0009页

作者：范新科徐雨竹王韩麒祁振玉宁波宁工交通工程设计咨询有限公司浙江宁波315211 宁波市镇海区城市基础设施建设中心浙江宁波315299

为了降低掉头车辆与其他车辆之间的冲突,保证交叉口整体通行能力和服务水平,在对常用掉头模式分析的基础上,提出将掉头车道与右转车道合并设置在最右侧的方法,并结合现场实际情况及交通运行特征,以黄山路-新大路交叉口作为案例进行应用... 详细信息

为了降低掉头车辆与其他车辆之间的冲突,保证交叉口整体通行能力和服务水平,在对常用掉头模式分析的基础上,提出将掉头车道与右转车道合并设置在最右侧的方法,并结合现场实际情况及交通运行特征,以黄山路-新大路交叉口作为案例进行应用分析。结果显示,掉头车道最右侧设置可以降低掉头车辆与其他车辆之间的冲突,在保证右转车辆正常通行的前提下,提高了掉头车辆的通行效率,对于保证道路通行畅通、行车安全有序起到了重要的推动作用。

关键词：交通工程掉头车道合并设置交通安全

Novel perspective in transplantation therapy of mesenchymal stem cells:targeting the ferroptosis pathway

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2023年第2期24卷 115-129页

作者： yuzhu xu PAN FAN LEI LIU xuANFEI xu LELE ZHANG JIADONG WANG YUAO TAO XIAOLONG LI XI LI YUNTAO WANG Medical School of Southeast University Southeast UniversityNanjing 210009China Department of Spine Surgery Zhongda Hospital Affiliated to Southeast UniversitySchool of MedicineSoutheast UniversityNanjing 210009China

Ex vivo culture-amplified mesenchymal stem cells(MSCs)have been studied because of their capacity for healing tissue *** transplantation is a valid approach for promoting the repair of damaged tissues and replacement of lost cells or to safeguard surviving cells,but currently the efficiency of MSC transplantation is constrained by the extensive loss of MSCs during the short post-transplantation ***,strategies to increase the efficacy of MSC treatment are urgently *** overload,reactive oxygen species deposition,and decreased antioxidant capacity suppress the proliferation and regeneration of MSCs,thereby hastening cell ***,oxidative stress(OS)and deficient antioxidant defense induced by iron overload can result in *** may inhibit cell survival after MSC transplantation,thereby reducing clinical *** this review,we explore the role of ferroptosis in MSC *** that little research has focused on ferroptosis in transplanted MSCs,further study is urgently needed to enhance the in vivo implantation,function,and duration of MSCs.

关键词： Mesenchymal stem cells(MSCs) Ferroptosis Oxidative stress(OS) Iron metabolism Lipid peroxidation Glutathione peroxidase 4(GPX4)

责任节段上位固定椎与邻近上位椎体不稳的腰椎退行性疾病的手术策略

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中华骨科杂志 2024年第10期44卷 658-668页

作者：李熹刘磊张哲徐玉柱汪沛漾李骁龙刘国臻张乐乐谢志阳陶禹澳樊攀王运涛东南大学医学院南京210009 东南大学附属中大医院脊柱外科南京210009 盐城市第三人民医院盐城224001

目的探讨术前存在责任节段上位固定椎(upper instrument vertebra,UIV)与邻近上位椎体(UIV+1)不稳定的腰椎退行性疾病患者中远期疗效及UIV与UIV+1不稳定的手术时机。方法回顾性分析2014年1月至2018年12月在东南大学附属中大医院脊柱外... 详细信息

目的探讨术前存在责任节段上位固定椎(upper instrument vertebra,UIV)与邻近上位椎体(UIV+1)不稳定的腰椎退行性疾病患者中远期疗效及UIV与UIV+1不稳定的手术时机。方法回顾性分析2014年1月至2018年12月在东南大学附属中大医院脊柱外科接受经椎间孔入路腰椎椎间融合固定术(transforaminal lumbar interbody fusion,TLIF)的265例腰椎退行性疾病患者的病历资料,男119例、女146例,年龄(64.93±9.76)岁(范围32~86岁)。在术前动力位X线片上测量UIV与UIV+1节段的矢状面成角(sagittal angulation,SA)和矢状面平移(sagittal translation,ST),将SA>10°或ST>2 mm的患者纳入不稳定组,再根据是否行包括UIV+1的扩大融合术分为不稳定非扩大手术组与不稳定扩大手术组,其余患者纳入稳定组。对比三组患者的影像学参数,末次随访SA、ST与术前的差值记作△SA、△ST;记录疼痛视觉模拟评分(visual analogue scale,VAS)、Oswestry功能障碍指数(Oswestry disability index,ODI)、日本骨科协会(Japanese Orthopaedic Association,JOA)评分(29分法)并计算JOA评分改善率评估临床疗效。通过Pearson相关分析术前影像学指标与末次随访JOA评分改善率的相关性,应用受试者工作(receiver operating characteristic,ROC)曲线确定术前SA和ST的临界值。结果全部患者随访(73.53±12.92)个月(范围61~108个月)。稳定组124例,男61例、女63例,年龄(64.31±9.83)岁(范围44~82岁);不稳定非扩大手术组59例,男22例、女37例,年龄(65.76±11.01)岁(范围32~86岁);不稳定扩大手术组82例,男36例、女46例,年龄(65.26±8.68)岁(范围47~80岁)。末次随访时不稳定非扩大手术组△SA为0.90°±1.97°、△ST为(0.77±1.27)mm,高于稳定组的0.25°±1.57°和(0.34±0.34)mm,差异有统计学意义(t=3.564,P10°或ST>2 mm)会在TLIF术后远期随访期间出现加重。术前UIV与UIV+1节段SA>11.5°、ST>1.85 mm时采用包括UIV+1的扩大固定融合术能够保证中远期随访的手术疗效。

关键词：腰椎椎间盘退行性变脊柱融合术节段性不稳定矢状面成角矢状面滑移

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Simulations of Vertical and Horizontal Displacement Fields in the 2008 Wenchuan Earthquake

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Earthquake Research in China 2010年第3期24卷 281-291页

作者： Bai yuzhu xu Jie Zhou Bengang Institute of Geology China Earthquake Administration Beijing 100029 China

By using the Yoshimitsu Okada and Steketee fault dislocation model,we calculated the vertical and horizontal displacements along the Yingxiu-Beichuan inverse fault and Guanxian-Anxian inverse fault along which the Wenchuan MS8. 0 earthquake occurred in 2008. Compared to the achievements of field surveying along the surface rupture zone,we found that our computational results are comparable to the real displacement variation trend. Furthermore,the computational results indicated that the surface displacement fields vary with the distance from the fault,and the vertical displacement fields show strong inhomogeneity,in which larger displacement is focused on the ends of the fault. However, in contrast to the vertical displacement,the horizontal displacement shows relative uniformity in space.

关键词： Dislocation model Fault Displacement

Unprecedent green macroalgae bloom:mechanism and implication to disaster prediction and prevention

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International Journal of Digital Earth 2023年第1期16卷 3772-3793页

作者： Mengmeng Cao xuyan Li Tingwei Cui Xinliang Pan Yan Li Yanlong Chen Ning Wang Yanfang Xiao Xingai Song yuzhu xu Runa A Bing Mu Song Qing Rongjie Liu Wenjing Zhao Yuhai Bao Jie Zhang Lan Wei College of Geographical Science Inner Mongolia Normal UniversityHohhotPeople’s Republic of China School of Atmospheric Sciences Sun Yat-Sen University&Key Laboratory of Tropical Atmosphere-Ocean SystemMinistry of Education&Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)ZhuhaiPeople’s Republic of China Ministry of Natural Resources First Institute of OceanographyQingdaoPeople’s Republic of China National Marine Environmental Monitoring Center DalianPeople’s Republic of China North China Sea Marine Forecasting Center of State Oceanic Administration QingdaoPeople’s Republic of China Ministry of Natural Resources National Satellite Ocean Application ServiceBeijingPeople’s Republic of China Ocean University of China QingdaoPeople’s Republic of China Ministry of Ecology and Environment South China Institute of Environmental ScienceGuangzhouPeople’s Republic of China

Green macroalgae bloom(GMB),with the dominant species of Ulva prolifera,has regularly occurred since 2007 along the China *** disaster prevention and control achieved favorable results in 2020,the satellite-observed GMB annual maximum coverage(AMC)rebounded sharply in 2021 to an unprecedented *** reasons for this rebound and the significant interannual variability over past 15 years are still open ***,by using long-term time-series(2007-2022)optical and Synthetic Aperture Radar satellite observations(1000+scenes),meteorological data and water quality statistics,the mechanism analysis was performed by exploring effects from natural factors and human *** key determinants for AMC are successfully identified from numerous potential factors which are the macroalgae distribution in a key area(the Subei Shoal)during a critical period(from April to May 20)and the nutrient ***,by using these two parameters,a novel model for AMC prediction(R^(2)=0.87,p<0.01)is proposed and independently validated,which can reasonably explain the significant interannual variability(2014-2021)and agree well with the latest observation in 2022(percentage difference 12%).Finally,suggestions are proposed for future disaster prevention and *** work may aid future bloom prediction and management measure optimization.

关键词： green macroalgae annual maximum coverage(AMC) the Yellow Sea Porphyra mariculture extreme weather water quality

Mainchain conformation ordering self-assembly tailored room temperature phosphorescence emission

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Science China Chemistry 2024年

作者： yuzhu Li Yumeng Gao Feng Tian Yu Wang Yuan Yao Shaoliang Lin Xiang Ma Binbin xu Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Key Laboratory for Advance Materials and Feringa Noble Prize Scientist Joint Research Centre Frontiers Science for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular Engineering East China University of Science & Technology

Developing organic room-temperature phosphorescence(RTP) materials with a wide range of tunable-emission is significant in expanding the applications of RTP materials. Herein, we rationally designed amphiphilic alternating copolymers poly(1,2-bis(4-alkoxyphenyl)ethane-1,2-dione-alt-(ethylene glycol)x)(P(Bz-alt-EGx)) that combined the advantage of alternating benzil and EGxskeleton, and tunable mainchain conformation. Through a mainchain conformation ordering assembly(COA) process, P(Bz-alt-EGx) self-assembled into well-defined platelets, and such assemblies emitted blue RTP at ca. 425 nm due to the ordered folded-chain conformation and confined microenvironment. In contrast, traditional self-assembly(TA) of P(Bz-alt-EGx) obtained less ordered aggregates, such as asymmetric worms, vesicles, and rod-like micelles. The resultant less ordered aggregates exhibited yellow-green RTP at ca. 550 nm. The wide-tuning RTP emission in solution(between blue and yellow-green, over125 nm) is realized using the P(Bz-alt-EGx) alternating copolymers under the treatment of different self-assembly *** study uncovers a new strategy to tailor the RTP emission through different self-assembly pathways and holds great promise for the fabrication of advanced optical materials.

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肥胖对后路腰椎融合术疗效影响的研究进展

中国修复重建外科杂志 2021年第1期35卷 130-136页

作者：徐玉柱王运涛姜峰张彬东南大学附属中大医院脊柱外科南京210009

目的综述肥胖对腰椎退变性疾病(lumbar degenerative diseases,LDD)患者后路腰椎融合术疗效的影响。方法广泛查阅近年国内外相关文献,总结肥胖LDD患者行后路腰椎融合术治疗的操作难度、并发症发生风险及远期临床疗效。结果虽然有相关文... 详细信息

目的综述肥胖对腰椎退变性疾病(lumbar degenerative diseases,LDD)患者后路腰椎融合术疗效的影响。方法广泛查阅近年国内外相关文献,总结肥胖LDD患者行后路腰椎融合术治疗的操作难度、并发症发生风险及远期临床疗效。结果虽然有相关文献提示肥胖患者后路腰椎融合术操作难度大,术后并发症发生风险高,但总的研究结果并未提示肥胖是施行后路腰椎融合术式的危险因素。通过评估患者身体状况,严格把握手术指征,肥胖患者能够获得良好手术疗效。结论后路腰椎融合术是治疗肥胖LDD的有效手段,但相关研究仍需完善,以进一步评估肥胖患者后路腰椎融合术的安全性和有效性。

关键词：肥胖腰椎退变性疾病后路腰椎融合术并发症

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中低渗透稠油油藏清洁酸酸化增注技术研究

海洋石油 2020年第4期40卷 36-41,52页

作者：徐毓珠中国石化江汉油田分公司石油工程技术研究院湖北武汉430035

八面河油田面14区沙四6砂组储层高孔-中低渗,黏土矿物含量高,水敏性强,注水过程中存在注水压力高、欠注井增多、水井利用率低、常规酸化效果差等问题。为了提高该区块注水合格率,研制了“清洁缓速酸+防膨增注液”体系,室内评价了该体系... 详细信息

八面河油田面14区沙四6砂组储层高孔-中低渗,黏土矿物含量高,水敏性强,注水过程中存在注水压力高、欠注井增多、水井利用率低、常规酸化效果差等问题。为了提高该区块注水合格率,研制了“清洁缓速酸+防膨增注液”体系,室内评价了该体系的缓速性、防二次沉淀和长效防膨等综合性能,试验结果表明,该体系具有深部酸化作用距离长,低伤害等特性。在八面河油田面14区沙四6砂组成功应用7井次,配注合格率为100%,应用效果显著。

关键词：砂岩普通稠油酸化增注清洁酸防膨液