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The Character and Petrogenetic Model of the Permian Tarim Large Igneous Province

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Acta Geologica Sinica(English Edition) 2020年第S1期94卷 7-7页

作者： CHEN Hanlin yang shufeng LI Zilong YU Xing LI Yinqi Zhejiang University HangzhouZhejiang 710054

Tarim Large Igneous Province(TLIP)is the second Late Paleozoic LIPs in China after the recognition of the Emeishan *** residual distribution range of TLIP is up to 250000 km2,and the largest residual thickness is 780 *** eruption of basalt happened during 290–288 Ma and belongs to LIPs magmatic event with fast eruption of *** lithological units of the TLIP include basalt,diabase,layered intrusive rock,breccia pipe mica-olivine pyroxenite,olivine pyroxenite,gabbro,ultramafic dyke,quartz syenite,quartz syenite porphyry and bimodal *** basalt and diabase of TLIP exhibit OIB-like trace element patterns and enrichment of LILE and HFSE,and mainly belong to high TiO2 *** is an obvious difference in isotope among the basalt from Keping and the basalt and dibase from the northern Tarim *** basalt from Keping with negative Nd and high REE value derives from enriched mantle,and the diabase and basalt from the northern Tarim Basin with positive Nd and low REE value are related to depleted *** crust uplifting in the Early Permian and the development of picrite and large scale dyke and formation of large scale V-Ti-magnetite deposit in Wajilitag area support the view that the TLIP is related to mantle *** TLIP has a temporal-spatial relationship with Permian basicultrabasic igneous rock,which is distributed widely in Central Asia,and they represent a tectono-magmatic event with very important geodynamic *** study also systematically demonstrates the two-stage melting model for the TLIP based on our previous research work and predecessor achievements,and highlights the two types of magmatic rocks within the *** two-stage melting model suggests that the formation of the TLIP is mantle plume *** early hot mantle plume caused the low-degree partial melting of the lithosphere mantle,while in the later stage,the plume partially melted due to adiabatic uplift and ***,this model carries signatures of b

关键词： magmatic sequence two type of basic magmatite two-stage melting model TLIP

Experimental study and simulation on the creep characteristics of machineharvested seed cotton

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International Journal of Agricultural and Biological Engineering 2024年第1期17卷 241-250页

作者： Ximei Wei Hongwen Zhang Jun Wang shufeng Li Lei Wang Xintian Du College of Mechanical and Electrical Engineering Shihezi UniversityShihezi 832003XinjiangChina Key Laboratory of Northwest Agricultural Equipment Ministry of AgricultureShihezi 832003XinjiangChina

In view of the unclear understanding of the basic scientific problems such as the rheological mechanism of seed cotton,especially the lack of research on the creep characteristics of seed cotton,the machine-harvested seed cotton in the Xinjiang region was taken as the research object to find out the compression creep *** universal material testing machine was used to carry out a one-factor creep test,taking moisture content,feed quality,compression times,and trash content as test factors and instantaneous elastic modulus,hysteretic elastic modulus,viscosity coefficient,and delay time as test *** ANOVA and correlation were analyzed by SPSS,and the creep process of the seed cotton was simulated by *** show that moisture content significantly affects the instantaneous elastic modulus,hysteretic elastic modulus,and viscosity coefficient(p<0.01).In addition,each value of which decreases with the increase in moisture *** quality significantly affects the hysteretic elastic modulus and viscosity coefficient(p<0.05).Moreover,the hysteretic elastic modulus and viscosity coefficient increase with the increase in feed *** compression times significantly influence the instantaneous elastic modulus,hysteretic elastic modulus,and viscosity coefficient(p<0.01),each value of which increases with the increase of compression ***,the trash content significantly influenced the hysteretic elastic modulus and viscosity coefficient(p<0.05).The absolute error between the simulated and experimental values ek is within−0.011-0.030 mm,and the relative errorφk is less than 7%.The experimental results can provide theoretical and data support for the study of rheological characteristics of machine-harvested seed cotton,the design of seed cotton packing devices,and the molding quality of cotton bale(mold).

关键词： creep characteristics machine-harvested seed cotton analysis of ANOVA one-factor tests ADAMS

溪洛渡GIS断路器断口并联电容介损测试方法研究

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高压电器 2015年第8期51卷 136-140页

作者：杨树锋陈辉溪洛渡水力发电厂云南永善657330

目前,当GIS断路器单台停电时,由于其两侧相邻的断路器或母线带电运行,该断路器断口并联电容的整体介损tanδ是无法测量的。文中分析了单台断路器停电时断路器断口并联电容整体介损测量的难点,提出了"先接后断"防止高电压、确保安全的方... 详细信息

目前,当GIS断路器单台停电时,由于其两侧相邻的断路器或母线带电运行,该断路器断口并联电容的整体介损tanδ是无法测量的。文中分析了单台断路器停电时断路器断口并联电容整体介损测量的难点,提出了"先接后断"防止高电压、确保安全的方法和采用"形成中性点"消除耦合高压和强电场干扰的技术措施。经试验验证,说明此方法安全可行、实用便捷,具有推广价值。

关键词： GIS 单台断路器停电断口并联电容介损测量干扰中性点误差

Integrating Landsat 8 and Corona KH-4B Imagery to Semi-Automatically Extract Dyke Geometries in Kuluktag Region, Xinjiang

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Acta Geologica Sinica(English Edition) 2016年第S1期90卷 63-页

作者： NI Nina CHEN Ninghua yang shufeng Department of Earth Sciences Zhejiang University

Dyke swarms are widely distributed in Kuluktag region of Xinjiang,Northwest *** dyke geometries indicate the process of the magma emplacement as well as the geological setting when the dykes ***

关键词： Xinjiang high KH

Discovery of Permian island-arc basalts in the Cenxi area and the tectonic significance──A piece of evidence for the paleo-Tethyan tectonic belt in western Guangdong and eastern Guangxi

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Chinese Science Bulletin 1998年第21期43卷 1838-1842页

作者： ZHANG Boyou 1, ZHAO Zhenhua 1, SHI Manquan 1, yang shufeng 2 and CHEN Hanlin 2 1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China 2. Department of Earth Sciences, Zhejiang University, Hangzhou 310027, China Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou China Department of Earth Sciences Zhejiang University Hangzhou China

Cenxi Permian basalts are the late Palaeozoic island-arc type basalts first found in South China. REE and trace element characteristics and distribution patterns show that this volcanic formation, which has been isotopically dated at 261 MaB.P. by the 39Ar/ 40Ar method, is of an active continental marginal island arc type, and that the tectonic environment at that time was an island-arc marginal sea or minor ocean basin related with the paleo-Tethyan tectonic belt in western Guangdong-eastern Guangxi.

关键词： spilite-keratophyre pillow lava Permian continental margin paleo-Tethyan evolution.

Changes on Stroke Burden Attributable to Ambient Fine Particulate Matter in China

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Biomedical and Environmental Sciences 2024年第8期37卷 823-833页

作者： Jingyu Wang Yan Wang Xiaohua Liang Keyong Huang Fangchao Liu shufeng Chen Xiangfeng Lu Jianxin Li Department of Epidemiology Fuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100037China Key Laboratory of Cardiovascular Epidemiology Chinese Academy of Medical SciencesBeijing 100037China Department of Clinical Epidemiology and Biostatistics Children’s Hospital of Chongqing Medical UniversityNational Clinical Research Center for Child Health and DisordersMinistry of Education Key Laboratory of Child Development and DisordersChongqing Key Laboratory of Pediatric Metabolism and Inflammatory DiseaseChongqing 400016China

Objective In recent decades,China has implemented a series of policies to address air *** aimed to assess the health effects of these policies on stroke burden attributable to ambient fine particulate matter(PM_(2.5)).Methods Joinpoint regression was applied to explore the temporal tendency of stroke burden based on data from the Global Burden of Disease 2019 *** The age-standardized rates of disability-adjusted life year(DALY)for stroke attributable to ambient PM2.5 in China,increased dramatically during 1990-2012,subsequently decreased at an annual percentage change(APC)of-1.98[95% confidence interval(CI):-2.26,-1.71]during *** ischemic stroke(IS),the age-standardized DALY rates doubled from 1990 to 2014,and decreased at an APC of-0.83(95%CI:-1.33,-0.33)during *** hemorrhage(ICH)showed a substantial increase in age-standardized DALY rates from 1990 to 2003,followed by declining trends,with APCs of-1.46(95%CI:-2.74,-0.16)during 2003-2007 and-3.33(95%CI:-3.61,-3.06)during 2011-2019,***,the age-standardized DALY rates for subarachnoid hemorrhage(SAH)generally declined during *** Our results clarified the dynamic changes of the ambient PM_(2.5)-attributable stroke burden in China during 1990-2019,highlighting the health effects of air quality improvement policies.

关键词： Ambient fine particulate matter Stroke Disease burden Temporal trend Policy

上扬子西南盐源盆地早三叠世物源体系及构造意义

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地球科学（中国地质大学学报） 2016年第8期41卷 1309-1321页

作者：朱民陈汉林周静杨树锋浙江大学地球科学学院浙江杭州310027 教育部含油气盆地构造研究中心浙江杭州310027

晚古生代末期至早中生代期间,上扬子西部边缘地区经历了峨眉山大火成岩省构造岩浆热事件和与古特提斯洋闭合相关的三江造山带形成事件,导致康滇古陆两侧形成了独特的盆山格局和沉积模式.由于目前人们对盐源盆地早三叠世青天堡组的物源... 详细信息

晚古生代末期至早中生代期间,上扬子西部边缘地区经历了峨眉山大火成岩省构造岩浆热事件和与古特提斯洋闭合相关的三江造山带形成事件,导致康滇古陆两侧形成了独特的盆山格局和沉积模式.由于目前人们对盐源盆地早三叠世青天堡组的物源与构造背景了解不多,故以盐源、盐塘剖面为代表,对青天堡组碎屑岩进行了砂岩组分、全岩地球化学和碎屑锆石年代学分析.结果显示,盐源盆地下三叠统青天堡组物源来自于近源搬运的火山岩,青天堡组与峨眉山大火成岩省的高钛玄武岩具有一致的元素组合配分模式,青天堡组锆石谐和加权平均年龄为261±16Ma,与峨眉山大火成岩省形成的地幔柱活动时期一致.上述结果表明早三叠世盐源盆地青天堡组物源为其东侧的峨眉山大火成岩省,扬子西部三江造山带可能并没有为盐源盆地提供物源,上扬子西南边缘地区早三叠世时期仍然为被动大陆边缘沉积.

关键词：下三叠统青天堡组物源分析构造盐源盆地上扬子地区地层学

基于雨流法的游梁式抽油机减速机箱体疲劳寿命评估

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机械传动 2018年第8期42卷 76-79页

作者：尚会超杨树峰中原工学院机电学院河南郑州450007

减速机的轻量化设计一直是机械传动领域非常重要的研究课题之一,箱体也是减速器非常重要的部件,以往,由于其设计主要采用经验设计方法,少有学者从其刚度、结构强度、疲劳可靠性以及齿轮的整体动力学问题方面进行了研究。以某游梁式抽油... 详细信息

减速机的轻量化设计一直是机械传动领域非常重要的研究课题之一,箱体也是减速器非常重要的部件,以往,由于其设计主要采用经验设计方法,少有学者从其刚度、结构强度、疲劳可靠性以及齿轮的整体动力学问题方面进行了研究。以某游梁式抽油机减速机箱体设计为例,拟合材料的S-N曲线,仿真分析了箱体应力应变,联合求解齿轮、曲柄作用箱体的载荷谱,采用雨流法在n Code软件中对减速机箱体疲劳寿命进行评估。着力研究箱体的疲劳寿命分析方法问题,为后期减速机箱体的轻量化设计打下基础。

关键词：游梁式抽油机减速机箱体交变应力疲劳寿命评估雨流法

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蒸馏装置掺炼FCC油浆探索与研究

炼油技术与工程 2019年第12期49卷 19-22页

作者：蔡文军杨书峰中国石油化工股份有限公司齐鲁分公司

在实验室研究基础上,确定了蒸馏装置在生产沥青期间小流量掺炼FCC油浆方案,总结了多年的实际运行情况。结果显示:掺炼油浆能够实现油浆增值;装置长期掺炼油浆,初期影响不明显,末期减压填料结焦、堵塞严重,减压塔进料段残压上升到6.69 k... 详细信息

在实验室研究基础上,确定了蒸馏装置在生产沥青期间小流量掺炼FCC油浆方案,总结了多年的实际运行情况。结果显示:掺炼油浆能够实现油浆增值;装置长期掺炼油浆,初期影响不明显,末期减压填料结焦、堵塞严重,减压塔进料段残压上升到6.69 kPa,沥青残留针入度比逐渐卡边,时常出现不合格;装置掺炼油浆,装置燃料气消耗呈现逐年上升趋势;换热器结焦堵塞严重,仪表热电偶存在磨损泄漏风险。

关键词：蒸馏装置 FCC油浆填料换热器结焦