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Structure of the Upper mantle and Transition Zone Beneath the South China Block Imaged by Finite Frequency Tomography

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Acta Geologica Sinica(english edition) 2016年第5期90卷 1637-1652页

作者： SUN ya LIU Jianxin TANG Youcai CHeN Jiawei ZHOU Keping CHeN Bo School ofGeosciences andlnfo-Physics Central South University Changsha 410083 China. School of Resources and Safety engineering Central South University Changsha 410083 China Key Laboratory ofmetallogenicprediction of Non-Ferrous metals Ministry of Education Central South University Changsha 410083 China. State Key Laboratory of Petroleum Resource and Prospecting and Unconventional Natural Gas Institute China University of Petroleum Beij'ing 102249 China. Key Laboratory of CrustalDynamics Institute of Crustal Dynamics CEA Beijing 100085 China

We applied the finite frequency tomography method to S wave data recorded by 350 broadband stations beneath the South China Block（SCB） and its surroundings from earthquakes occurring between July 2007 and July 2010,to better understand upper mantle *** travel-times in the pair of stations with appropriate weighting for each station are used in the *** results are consistent with previous tomography that show a high velocity anomaly beneath the Sichuan basin and a high velocity anomaly in the transition zone beneath the yangtze ***,the resolution of mantle heterogeneity provides new insight into the tectonic framework of subduction of Burmese lithosphere in the west part of the study region and subduction of oceanic lithosphere in the *** the subduction realm,west of 107°e,a significant fast S-wave anomaly is located on the southeast of Sichuan *** of 107°e,and two narrow and discontinuous fast S-wave anomalies occur at a depth of 400-600 km beneath the middle of the South China block overlain by the pronounced low S-wave anomalies at a depth of 100 and 400 *** the fast anomalies located in the mantle transition zone represent stagnant slabs,their fragmented nature may suggest that they could be produced by different episodes of subduction beneath western Pacific island and the above slow velocity anomaly may associated with the back-arc regions of ongoing *** addition,tomography also reveals an anomalously high S-wave velocity continental root extends eastward to a depth 400 km beneath the eastern Sichuan *** anomaly may be related to eastern extrusion of Indian lithosphere associated with the collision of India and ***,our results also show large slow anomalies beneath the Red River fault region connected to deeper anomalies beneath the South China Fold Belt and South China *** these observations are consistent with the scenario that the South China block has been built by both

关键词： finite frequency tomography South China Block station pairs subduction Paleo-pacific plate

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Preface for special issue on local scour and soil liquefaction around offshore windfarm foundations

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Water Science and engineering 2022年第1期15卷 1-2页

作者： Jin-hai Zheng ya-kun Guo Ji-sheng Zhang Da-wei Guan Key Laboratory of ministry of education for Coastal Disaster and Protection Hohai UniversityNanjing 210098China College of Harbour Coastal and Offshore EngineeringHohai UniversityNanjing 210098China Department of Civil and Structural engineering University of BradfordBradford BD71DPUK

The offshore wind industry has been Hourishing globally over the past few decades because of the increasing demand for renewable *** types of foundations have been adopted,including monopiles,gravity・based structures,tripods,jackets,and pile groups for traditional offshore wind-farm foundations,as well as drag-embedment anchors(DeAs)with associated subsea structures(i.e.,tensioners,clump weights,and chains)for foundations of floating *** scour and liquefaction issues are significant to the security of offshore windfarm foundations and foundation stability(Guan et al.,2019;Whitehouse et al.,2011;Zhu et al.,2018).

关键词： scour offshore soil

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Treatment and hydraulic performances of the Niimi process for landscape water

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Journal of Zhejiang University-Science A(Applied Physics & engineering) 2010年第2期11卷 132-142页

作者： Jian yaNG Liang-bo ZHANG Yi-fan WU ya-yi WANG Cui LI Wen LIU State Key Laboratory of Pollution Control and Resources Reuse School of Environmental Science and Engineering Tongji University Shanghai 200092 China

This paper describes the Niimi process designed to treat landscape water. The main aim of the research was to investigate the feasibility of Niimi for removing organic and nutriment materials from landscape water. During the batch-scale Niimi operation, the removal rates of color ranged from 66.7%o-80% , of turbidity from 31.7%-89.3%o, of chemical oxygen demand （COD） from 7%-36.5%, of total phosphor （TP） from 43%-84.2%, of soluble phosphate from 42.9%-100%, of total nitrogen （TN） from 4.2%-46.7%, and of NH4^＋-N from 39.3%-100% at the hydraulic loading of 0.2 m^3/（m^2·d）. Results showed that the removal efficiencies of COD, TP, soluble phosphate and TN decreased with the decline in the temperature. The Niimi process had a strong shock loading ability for the removal of the organics, turbidity, TP, soluble phosphate, TN and NH4^＋-N. Three sodium chloride tracer studies were conducted, labeled as TS 1, TS2, and TS3, respectively. The mean hydraulic retention times （mean HRTs） were 31 h and 28 h for TSI and TS2, respectively, indicating the occurrence of a dead zone volume of 12% and 20% for TS 1 and TS2, respectively. TS 1 and TS2 displayed the occurrence of short-circuiting in the Niimi system. The comparison results between TS1 and TS2 were further confirmed in the values obtained for some indicators, such as volumetric efficiency （e）, short-circuiting （S）, hydraulic efficiency （2） and number of continuously stirred tank reactors （N）.

关键词： Niimi system Landscape water Purification efficiency Hydraulic efficiency Tracers

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The highest melting point material:Searched by Bayesian global optimization with deep potential molecular dynamics

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Journal of Advanced Ceramics 2023年第4期12卷 803-814页

作者： Yinan Wang Bo Wen Xingjian Jiao ya Li Lei Chen Yujin Wang Fu-Zhi Dai Artificial Intelligence for Science Institute Beijing 100084China Science and Technology on Advanced Functional Composite Laboratory Aerospace Research Institute of Materials&Processing TechnologyBeijing 100076China College of Computer Science and Technology Heilongjiang Institute of TechnologyHarbin 150001China Institute for Advanced Ceramics School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China Key Laboratory of Advanced Structural-Functional Integration materials&Green manufacturing Technology Harbin Institute of TechnologyHarbin 150001China DP Technology Bejing 100080China

The interest in refractory materials is increasing rapidly in recent decades due to the development of hypersonic ***,the substance that has the highest melting point(Tm)keeps a secret,since precise measurements in extreme conditions are overwhelmingly *** the present work,an accurate deep potential(DP)model of a Hf-Ta-C-N system was first trained,and then applied to search for the highest melting point material by molecular dynamics(mD)simulation and Bayesian global optimization(BGO).The predicted melting points agree well with the experiments and confirm that carbon site vacancies can enhance the melting point of rock-saltstructure *** solid solution with N is verified as another new and more effective melting point enhancing approach for HfC,while a conventional routing of the solid solution with Ta(e.g.,HfTa_(4)C_(5))is not suggested to result in a maximum melting *** highest melting point(~4236 K)is achieved with the composition of HfCo.638No.271,which is~80 K higher than the highest value in a Hf-C binary *** mechanism of the N addition is believed to be unstable C-N and N-N bonds in liquid phase,which reduces liquid phase entropy and renders the liquid phase less *** improved melting point and less gas generation during oxidation by the addition of N provide a new routing to modify thermal protection materials for the hypersonic vehicles.

关键词： melting point(T_(m)) carbides carbonitrides deep potential(DP) Bayesiannglobal optimization(BGO)

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基于meTTL3-SFRP4/Wnt/β-catenin通路探讨黄芩清热除痹胶囊改善类风湿性关节炎的机制

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中国中药杂志 2024年第11期49卷 3081-3094页

作者：王玉亭吴雅婕黄玉蓉薛秋云程成龙缪成贵陈光亮安徽中医药大学安徽合肥230012 安徽省中药复方研究重点实验室安徽合肥230012

研究黄芩清热除痹胶囊(Huangqin Qingre Chubi Capsules,HQC)治疗类风湿性关节炎(rheumatoid arthritis,RA)的作用及机制。70只雄性SPF级大鼠随机分为正常组,模型组,HQC低(0.18 g·kg^(-1))、中(0.36 g·kg^(-1))、高(0.72 g·kg^(-1))剂量组,甲氨蝶呤(mTX,0.75 mg·kg^(-1))组,阴性对照组(NC组,模型+生理盐水)。佐剂性关节炎(AA)大鼠成纤维样滑膜细胞(fibroblast-like synoviocytes,FLS)分为正常组,模型组,HQC低(5%HQC含药血清+95%滑膜培养基)、中(10%HQC含药血清+90%滑膜培养基)、高(15%HQC含药血清+85%滑膜培养基)剂量组,阴性对照组。采用实时荧光定量PCR(RT-qPCR)和蛋白免疫印记法(Western blot)检测甲基转移酶3(methyltransgerase like 3,meTTL3)、分泌型卷曲相关蛋白4(SFRP4)、β-连环蛋白(β-catenin)、细胞周期蛋白D1(CCND1)、V-myc骨髓细胞瘤病毒癌基因同源物(c-myc)、纤连蛋白(fibronectin)、基质金属蛋白酶3(matrix metalloproteinase 3,mmP3)mRNA和蛋白的表达。免疫荧光法进一步检测mmP3和β-catenin蛋白表达。在AA-FLS上敲低meTTL3基因表达水平,进一步检测各基因表达情况。酶联免疫吸附法(eLISA)检测白细胞介素(IL)-1β、IL-6、IL-8的水平。结果显示,与正常组相比,模型组大鼠四肢均发现红肿现象,关节肿胀程度明显增加;与模型组相比,各给药组关节肿胀度显著下降(PmeTTL3在AA大鼠高表达,且与SFRP4的表达呈负相关。AA-FLS经给药后,meTTL3、β-catenin、CCND1、c-myc、fibronectin、mmP3 m RNA和蛋白表达显著降低(PmeTTL3后β-catenin、CCND1、c-myc、fibronectin、mmP3 m RNA和蛋白表达均降低(PmeTTL3组的β-catenin、CCND1、c-myc、fibronectin、mmP3 m RNA和蛋白表达均明显低于meTTL3敲低组(PmeTTL3在AA大鼠滑膜组织和AA-FLS中表达显著升高,这可能是诊断和治疗RA的潜在靶点;HQC通过meTTL3-SFRP4/Wnt/β-catenin信号通路改善RA,具有明显的抗炎和抗风湿作用。

关键词：类风湿性关节炎黄芩清热除痹胶囊 meTTL3 SFRP4 Wnt/β-catenin

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High-performance supercapacitors based on free-standing SiC@PeDOT nanowires with robust cycling stability

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Journal of energy Chemistry 2022年第3期31卷 30-37,I0002页

作者： Wenna Liu Xiaoxiao Li Weijun Li Yumin Ye Hong Wang Peipei Su Weiyou yang ya yang Ningbo Key Laboratory of Specialty Polymers School of Materials Science and Chemical EngineeringNingbo UniversityNingbo 315211ZhejiangChina Institute of materials Ningbo University of TechnologyNingbo 315016ZhejiangChina CAS Center for excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China

Conductive polymers as one of the candidate materials with pseudocapacitor behavior have inspired wide attentions,because of their high conductivity,fexibility,low cost and excellent ***,the intrinsically poor cycling stability induced by the volume change over the doping/dedoping redox process limits their practical ***,we report the exploration of electrodes with robust cycling capacity for supercapacitors(SCs),which are rationally designed by coating conductive poly(3,4-ethylenedioxythiophene)(PeDOT)around free-standing SiC nanowires using an all-dry oxidative chemical vaper deposition(oCVD)*** as-constructed SiC@PeDOT nanowire architecture enables a specific capacitance of 26.53 m F/cm^(2)at 0.2 m A/cm^(2),which is~370%to that of SiC nanowire counterpart(7.04 m F/cm^(2)).moreover,their aqueous-based SCs exhibit robust cycling stability with104%capacity retention after 10000 cycles,which is among the highest values achieved for PeDOTbased SCs.

关键词： PeDOT SiC nanowires Supercapacitor energy storage Cycling stability

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贝氏体等温时间对两相区轧制舰船用钢组织和性能的影响

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材料热处理学报 2024年第7期45卷 147-153页

作者：田亚强姚硕张明山李红斌胡宝佳陈连生华北理工大学现代冶金技术教育部重点试验室河北唐山063210

采用扫描电镜(Sem)、X射线衍射仪(XRD)和电子万能试验机等研究了两相区轧制后贝氏体等温处理时间对舰船用钢组织性能的影响。结果表明:当在450℃等温处理10 min到1 h时,试验钢的显微组织由马奥岛(m/A岛)、少量粒状贝氏体和铁素体组成;... 详细信息

采用扫描电镜(Sem)、X射线衍射仪(XRD)和电子万能试验机等研究了两相区轧制后贝氏体等温处理时间对舰船用钢组织性能的影响。结果表明:当在450℃等温处理10 min到1 h时,试验钢的显微组织由马奥岛(m/A岛)、少量粒状贝氏体和铁素体组成;随着等温时间的延长,m/A岛逐渐减少,粒状贝氏体增多;当等温时间达到5 h时,显微组织由粒状贝氏体和少量铁素体组成。随着等温时间的继续延长,粒状贝氏体不断长大,残留奥氏体分解为碳化物,试验钢的屈服强度为1116~1150 mPa,抗拉强度为1121~1156 mPa。随着等温时间的延长,试验钢的断后伸长率和冲击吸收能量均呈先升高后降低趋势,在等温5 h时,伸长率和冲击吸收能量均达到最大值,分别为15.6%和81.2 J。

关键词：两相区轧制贝氏体等温时间舰船用钢粒状贝氏体冲击吸收能量

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低温射频等离子技术对咽部间隙肿瘤切除患者疼痛及肿瘤复发的影响

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四川生理科学杂志 2024年第3期46卷 633-635页

作者：谭亚洲杨雪华郭自奇濮阳市安阳地区医院耳鼻咽喉科河南安阳455000

目的:探究低温射频等离子技术对咽部间隙肿瘤切除患者疼痛及肿瘤复发的影响.方法:选取2016年2月至2021年3月期间因咽部间隙肿瘤在我院行手术治疗的患者62例作为研究对象.随机将患者分为对照组和观察组,各31例.对照组采用传统冷刀或热刀... 详细信息

目的:探究低温射频等离子技术对咽部间隙肿瘤切除患者疼痛及肿瘤复发的影响.方法:选取2016年2月至2021年3月期间因咽部间隙肿瘤在我院行手术治疗的患者62例作为研究对象.随机将患者分为对照组和观察组,各31例.对照组采用传统冷刀或热刀切除.观察组采用低温射频等离子技术切除.分析对比两组的围手术期相关指标、术前及术后3 d的疼痛程度和应激反应、术后1 m并发症及1 y内肿瘤复发情况.结果:观察组手术时长、住院时长、手术失血量和黏膜恢复评分均显著低于对照组(Pe scale,VAS)评分和皮质醇(cortisol,Cor)、前列腺素e2(prostaglandin e2,PGe2)、P物质(substance p,SP)等血清学指标差异无统计学意义(P>0.05);术后第3 d,观察组的VAS评分及各项血清学指标均显著低于对照组(P0.05).结论:低温射频等离子技术能改善围术期指标,降低疼痛刺激,具有较高的安全性,且不增加瘤的复发率.

关键词：低温射频等离子技术经口内镜咽旁间隙疼痛复发

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自制肺部模体用于射波刀肺追踪e2e验证分析

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中国辐射卫生 2024年第1期33卷 1-6页

作者：魏晓马向捷李明生张征召刘雅杨雨泽程金生中国疾病预防控制中心辐射防护与核安全医学所北京100088 解放军总医院第五医学中心北京100071 中国医学科学院放射医学研究所天津300192

目的通过比较自制肺部模体与CIRS动态模体在射波刀肺追踪e2e测试中的测量结果,验证自制肺部模体用于射波刀质量控制检测的可行性。方法模拟患者治疗流程,分别对自制肺部模体与CIRS模体进行CT定位、计划设计、实施照射、扫描胶片并进... 详细信息

目的通过比较自制肺部模体与CIRS动态模体在射波刀肺追踪e2e测试中的测量结果,验证自制肺部模体用于射波刀质量控制检测的可行性。方法模拟患者治疗流程,分别对自制肺部模体与CIRS模体进行CT定位、计划设计、实施照射、扫描胶片并进行分析,上述两种模体在S7代射波刀上使用mLC各重复测量5次,在m6代射波刀上使用Iris也分别重复测量5次,对实验结果使用独立样本t检验分析方法分析两种模体测量结果的差异。结果对于S7代射波刀,两种模体在X轴、Y轴、Z轴和总偏差上的检测值统计学分析结果分别为:P=0.236、0.175、0.289、0.668;对于m6代射波刀,所得分析结果分别为:P=0.880、0.891、0.573、0.433。以上P值均> 0.05。因此自制肺部模体与CIRS模体在S7代射波刀与m6代射波刀上的检测结果差异均无统计学意义;总偏差值均mm。结论自制肺部模体与CIRS模体在射波刀肺追踪的e2e实验中,测量结果具有一致性,满足AAPm TG-135报告和WS 667—2019标准中的要求,具有用于射波刀临床质控的可行性。

关键词：射波刀质量控制肺部动态模体肺追踪

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Tunable metal-insulator transition in LaTiO3/CaVO3 superlattices:A theoretical study

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Chinese Physics B 2020年第12期29卷 442-447页

作者： ya-Kui Weng meng-Lan Shen Jie Li Xing-Ao Li School of Science Nanjing University of Posts and TelecommunicationsNanjing 210023China School of materials Science and engineering Nanjing University of Posts and TelecommunicationsNanjing 210023China Grünberg Research Center Nanjing University of Posts and TelecommunicationsNanjing 210023China

As one of intriguing physical results of electronic reconstruction,the metal-insulator transition plays an important role in exploring new electronic *** this study,the density functional theory is employed to investigate the metal-insulator transition in(LaTiO3)m/(CaVO3)n ***,three kinds of physical avenues,i.e.,stacking orientation,epitaxial strain,and thickness periods,are used to tune the metal-insulator *** calculations find that the[001]-and[110]-oriented(LaTiO3)1/(CaVO3)1 superlattices on SrTiO3 substrate are insulating,while[111]-oriented case is *** metallic behavior in[111]orientation can also be modulated by epitaxial *** the structural orientation and strain effect,the highly probable metal-insulator transition is presented in(LaTiO3)m/(CaVO3)n superlattices with increasing *** addition,several interesting physical phenomena have also been revealed,such as selective charge transfer,charge ordering,and orbital ordering.

关键词： metal-insulator transition superlattices charge transfer

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