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蛇绿岩中铬铁岩母岩浆的富Ca特征：矿物包裹体证据

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地球科学 2018年第4期43卷 1038-1050页

作者：刘霞苏本勋白洋陈晨肖燕梁子杨赛红彭青山苏本灿刘斌成都理工大学地球科学学院四川成都610059 中国科学院地质与地球物理研究所中国科学院矿产资源研究重点实验室北京100029 中国科学院大学北京100049 中国科学院地质与地球物理研究所岩石圈演化国家重点实验室北京100029 长春工程学院勘查与测绘工程学院吉林长春130012 中国石油天然气股份有限公司长庆油田分公司第八采油厂陕西西安710000

铬铁矿作为蛇绿岩中的重要矿产,其成矿母岩浆性质及演化一直存在较大争议.铬铁矿的矿物包裹体同时或先于铬铁矿结晶,其成分和类别能很好地记录成矿母岩浆性质和演化过程.土耳其Pozant-Karsant蛇绿岩不同类型铬铁岩的铬铁矿中发现了... 详细信息

铬铁矿作为蛇绿岩中的重要矿产,其成矿母岩浆性质及演化一直存在较大争议.铬铁矿的矿物包裹体同时或先于铬铁矿结晶,其成分和类别能很好地记录成矿母岩浆性质和演化过程.土耳其Pozant-Karsant蛇绿岩不同类型铬铁岩的铬铁矿中发现了多种类型包裹体:不含水硅酸盐矿物(如橄榄石和单斜辉石)、含水硅酸盐矿物(如角闪石和金云母)、复合型矿物包裹体(如蛇纹石、硅灰石和单斜辉石的复合型包裹体)和不常见矿物(如磷灰石、铂族元素硫化物).含水矿物包裹体的出现以及矿物的高Mg#特征(如橄榄石Fo=95.4~97.1;单斜辉石Mg#=92.0~99.9;角闪石Mg#=88.9~99.8)表明结晶铬铁矿的母岩浆具有富水、富Mg的特征.同时,除钙铬榴石和磷灰石的包裹体外,在铬铁矿中首次发现富Ca矿物方解石和硅灰石,其中方解石和菱镁矿以复合型包裹体形式产出,硅灰石则分布于蛇纹石矿物包裹体中.这些富Ca矿物的出现以及硅酸盐矿物的高CaO含量均揭示了铬铁岩母岩浆的富Ca特征.母岩浆中的Ca组分可能来源于俯冲板块中富Ca岩石/矿物的部分熔融,Ca离子的大量出现使得Cr3.在熔体中更加稳定,同时富Ca矿物的结晶促进了岩浆中Cr的进一步富集而利于铬铁矿的大量结晶沉淀.

关键词：蛇绿岩铬铁矿包裹体母岩浆矿物学岩石学

Studies on the Chemical Constituents of the Leaves of Premna microphylla

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Studies on the Chemical Constituents of the Leaves of Premna...

中国化学会第9届天然有机化学学术会议

作者： Zhengxi Hu,Yongbo Xue,Yongji Lai,Ming Yuan,Shishi Han,Huiqin Qian,Zengwei Luo, Guangmin Yao,~* Yonghui Zhang~* Hubei key Laboratory of Natural Medicinal Chemistry and Resource Evaluation,School of Pharmacy, Tongji Medical College,Huazhong University of Science and technology,Wuhan 43.03.,China

＜正＞The genus Premna,widely distributed in tropical and subtropical Asia,Africa,Australia and the Pacific islands,is a medicinally important member of the Verbenaceae family.P. microphylla *** a plant locally known as "Doufuchai" in China,and has been used in Chinese traditional medicine to treat dysentery and *** current phytochemical investigations on this plant have resulted in the isolation of eleven known compounds,and

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梳式沉箱防波堤的水力学特性

水动力学研究与进展（A辑） 2002年第4期17卷 472-482页

作者：李玉成孙昭晨徐双全董国海林异珠牛恩宗毛恺大连理工大学海岸和近海工程国家重点实验室辽宁大连116024 中交水运规划设计院北京100007

本文通过实验研究 ,对于梳式沉箱这种新型防波堤结构的水力学特性进行了系统研究 ,论证了它能够减小波浪反射与减小结构受力的水力学机制 ;通过系列实验 ,本文给出了梳式结构受力与常用实体沉箱受力之比 (波浪力折减系数 )与各主要影响... 详细信息

本文通过实验研究 ,对于梳式沉箱这种新型防波堤结构的水力学特性进行了系统研究 ,论证了它能够减小波浪反射与减小结构受力的水力学机制 ;通过系列实验 ,本文给出了梳式结构受力与常用实体沉箱受力之比 (波浪力折减系数 )与各主要影响参数间相关的计算公式 ,可用以进行梳式结构的尺度选择与优化和进行梳式结构设计的初步计算。该结构已在大连港大窑湾港区岛堤工程中得到实际应用 ,实验证明梳式方案的水平波浪力仅为常用沉箱受力值的 6 2 %～73. ,可节省投资 2 4 .5 %。

关键词：梳式结构沉箱反射率波浪力

Investigation on some key problems of large power AC-DC-AC converter

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Baosteel Technical Research 2010年第S1期4卷 100-页

作者： LI Chongjian~(1)) and WANG Chengsheng~(2)) 1) Automation Research and Design Institute of Metallurgical Industry,Beijing 100071,China 2) Hybrid Process Industry Automation System and Equipment technology state key Lab,Beijing 100071,China

China is an important country in iron and steel *** electronics converters are widely *** the cold rolling mills of high speed,AC-DC-AC converters should be *** the paper,the design and the control system of the large power three-level AC - DC - AC converter with IGCTs is investigated,and a back-to-back large power three-level AC - DC - AC converter with IGCTs has been got. With a series experiments,the performance of the converter is *** experiment result indicates the converter reaches the design requirement and it shows excellent *** converter system has been put into use *** is estimated that the AC - DC - AC converter system will be used in the drive systems for rolling mills in the near future.

关键词： large power AC - DC - AC IGCT converter

Three-dimensional Simulation on Characteristics of Increased Efficiency of Bionic Centrifugal Water Pump

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Three-dimensional Simulation on Characteristics of Increased...

The 2nd International Conference of Bionic Engineering(ICBE’08)

作者： L.Q.Ren~1 L.M.Tian~1 Z.Y.Peng~2 X.Jiang~3.1.key Laboratory for Terrain-Machine Bionics Engineering (Ministry of Education China) Jilin University Changchun 13.022 P.R.China 2.Xichang Satillate Lanch Center Xichang 615000 P.R.China 3.Jilin Vocational and Technical College Traffic Changchun 13.022 P.R.China

＜正＞The body surface of some organisms has non-smooth stroctures,such as skin of shark,which can change the fluid state and reduce the drag in moving *** and utilization of these non-smooth structures could bring some wonderful results in *** was confirmed that in certain conditions,the centrifugal water pumps which possess the non-smooth structures could increase the efficiency *** this paper,the type of 200QJ50-26 centrifugal water pump which on the back of impeller blade possesses some dimple concave structures was selected as simulative *** the results of the simulation,it was found that the shear stress,surface frictional coefficient and turbulent viscidity around the dimple concaves became lower. The lower tangential velocity on dimple concave means the total tangential force becomes lower,so the yawing rotation would decrease,and the increased efficiency would be *** the other hand,this lower speed of flow like revolving shaft,avoid upper flow contact on the impeller blade surface directly,this would avoid an abrupt change of velocity *** prevents the small eddy from producing overfull thereby reducing energy dissipation,save energy and increase efficiency.

关键词： centrifugal water pump bionic non-smooth surface computer simulation dimple concave

Preparation and photocatalytic properties of ZnO/carbon nanofibers composites

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Preparation and photocatalytic properties of ZnO/carbon nano...

第六届国际氧化锌及相关材料研讨会

作者： Shawei Fu,Xinghua Li,Changhua Wang,Changlu Shao,Yichun Liu. Center for Advanced Optoelectronic Functional Materials Research,and key Laboratory of UV Light-Emitting Materials and technology of Ministry of Education,Northeast Normal University,5268 Renmin Street,Changchun 13.024,People’s Republic of China

Oxide semiconductor photocatalysts have attracted much attention due to their widely applicability in treatment of environmental pollution, degrade the organic pollutants in air and water.1 Zinc oxide (ZnO) is an impo...

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Study exotic nuclear 6He by knockout reaction on proton target

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Study exotic nuclear 6He by knockout reaction on proton targ...

第十三届全国核结构研讨会暨第九次全国“核结构与量子力学”专题讨论会

作者： LV Lin-Hui~(1 1)),YE Yan-Lin~(1 2)),JIANG Dong-Xing~1,HUA Hui~1, ZHENG tao~1,LI Zhi-Huan~1,GE Yu-Cheng~1,LI Xiang-qing~1, LOU Jian-Ling~1,CAO Zhong-Xin~1,XIAO Jun~1,Li Qi-Te~1, 1(state key Laboratory of Nuclear Physics and technology,School of Physics,Peking University,Beijing 100871,China)

The mechanism of knockout reaction by He beams with the energy of 62MeV/u and 82MeV/u impinging on proton target has been *** on the structure of He was obtained by quasi-free scattering processes and momentum distributions of cluster in *** order to get an accurate invariant mass spectrum of He,the mechanism of one neutron in He incident on proton has been selected.

关键词： Knockout reaction Reaction mechanism Exotic nuclei Invariant mass spectra

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卡尔曼滤波模型在GPS监测网中的应用研究

测绘 2011年第5期34卷 205-207页

作者：龙仁波中国矿业大学国土环境与灾害监测国家测绘局重点实验室江苏徐州221116

导出了基于卡尔曼滤波的GPS监测系统的状态方程和观测方程的纯量形式和矩阵形式并给出系统的滤波方程,讨论了形变分析方法。通过对模拟GPS监测网的计算分析,取得了满意的结果,证明了该方法的有效性。

关键词：变形监测卡尔曼滤波检验统计

印迹膜电喷雾电离质谱法快速分析尿液中沙丁胺醇

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质谱学报 2018年第3期39卷 278-286页

作者：韩友霞李天一樊柳生徐伟张玫北京理工大学医院北京100081 中国疾病预防控制中心传染病预防控制所传染病预防控制国家重点实验室北京102206 感染性疾病诊治协同创新中心浙江杭州310003 北京理工大学生命学院北京100081

沙丁胺醇(SAL)可促进动物生长,常被非法添加于畜禽饲料中,并可通过食物链进入人体,危害人体健康。目前,沙丁胺醇的分析方法已有很多报道,但对于复杂生物样本中沙丁胺醇的快速定量分析依然存在挑战。为实现这一目标,本研究采用印迹膜电... 详细信息

沙丁胺醇(SAL)可促进动物生长,常被非法添加于畜禽饲料中,并可通过食物链进入人体,危害人体健康。目前,沙丁胺醇的分析方法已有很多报道,但对于复杂生物样本中沙丁胺醇的快速定量分析依然存在挑战。为实现这一目标,本研究采用印迹膜电喷雾电离质谱法(MIM-ESI MS)对尿液中的沙丁胺醇进行直接定性和定量分析。结果表明,该方法具有较高的灵敏度,尿液样本的检出限和定量限分别为5ng/L和10ng/L,在0.01~10 000μg/L浓度范围内具有较好的线性关系。该方法无需样品前处理,其分子印迹膜材料具有特异性富集的功能,可实现生物复杂样本中痕量目标物的快速检测。

关键词：沙丁胺醇(SAL)受体激动剂饲料分子印迹(MIT) 常压敞开式电离质谱