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Acta Geologica Sinica(English Edition) 2004年第2期78卷 471-475页

作者： sunxiaoming WANGMin XUETing MAMingyang LIYinhe DepartmentofEarthSciences SunYat-senUniversityGuangzhouGuangdong510275 InstituteofMineralResources ChineseAcademyofGeologicalSciencesBeijing100037 DepartmentofEarthSciences SunYat-senUniversityGuangzhouGuangdong510275／／StateKeyLaboratoryforMineralDepositsResearchNanjingUniversityNanjingJiangsu210093

He-Ar isotopic compositions of fluid inclusions trapped in pyrites from some representative PGE-polymetallic deposits in Lower Cambrian black rock series in South China were analyzed by using an inert gas isotopic mass spectrometer. The results show that the ore-forming fluids possess a low 3He/4He ratio, varying from 0.43×10-8 to 26.39×10-8, with corresponding R/Ra value of 0.003-0.189. The 40Ar/36Ar ratios are 258-287, close to those of air saturated water (ASW). He-Ar isotopic indicator studies show that the ore-forming fluids were mainly derived from the formation water or basinal hot brine and sea water, while the content of mantle-derived fluid or deep-derived magmatic water might be negligible. The PGE-polymetallic mineralization might be related to the evolution of the Caledonian miogeosynclines distributed along the southern margin of the Yangtze Craton. During the Early Cambrian, the formation water or basinal hot brine trapped in Caledonian basins which accumulated giant thick sediments was expelled and migrated laterally along strata because of the pressure generated by overlying sediments. The basinal hot brine ascended along faults, mixed with sea water and finally deposited ore minerals.

关键词： He-Ar isotopic systematics pyrite fluid inclusions PGE-polymetallic deposit basinal hot brine

Dating of sediment-hosted disseminated-type gold deposit by using ^40Ar/^39Ar laser probe:A case study of Changkeng large-scale gold deposit,China

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Chinese Science Bulletin 2003年第17期48卷 1887-1891页

作者： sunxiaoming CHENWen: WANGMin XUETing SUNKai CHENBinghui StateKeyLaboratoryofMineralDepositResearch Nanjing210093China InstituteofGeologyandGeophysics ChineseAcademyofSciencesBeiiing100101China: DepartmentofEarthSciences SunYat-senUniversityGuangzhou510275China

Hydrothermal clay minerals that formed in the main metallogenic stage of the Changkeng disseminated-type gold deposit in central Guangdong were analyzed by the 40Ar/39Ar laser probe. The results give Ar-Ar isochron ages of 109.9 1.4 to 110.1 1.3 Ma, which are 30 to 50 Ma older than the age of silver ore bodies in the deposit. Both gold and silver mineralizations were not related to hidden granite batholith in the mining district, but probably related to evo-lution of sedimentary basins. This study shows that the 40Ar/39Ar laser probe is a sound dating tool applicable to sediment-hosted disseminated-type gold deposit.

关键词：中国沉积散布型金矿床 ^40Ar/^39Ar激光探针热液粘土矿物年龄测定

Light Hydrocarbons in Fluid Inclusions and Their Constraints on Ore Genesis:A Case Study of the Songxi Ag(Sb)Deposit,Eastern Guangdong,China

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Acta Geologica Sinica(English Edition) 2003年第2期77卷 227-236页

作者： SUNKai WANGMin CHENBinghui CHENJingde YUShoujun sunxiaoming DavidI.NORMAN DepartmentofEarthSciences SunYat-senUniversityGuangzhouGuangdong510275China StateKeyLaboratoryforMineralDepositsResearch NanjingUniversityNanjingJiangsu210093China DepartmentofEarthandEnvironmentalSciences NewMexicoInstituteofMiningandTechnology(NMT)SocorroNM87801USA

The Songxi deposit is a newly discovered large Ag (Sb) deposit. By using a suite of high-vacuum quadrupole gas mass spectrometer systems, the authors have recognized many kinds of light hydrocarbons in fluid inclusions of minerals. These hydrocarbons are mainly composed of C1-C4 saturated alkanes, while the contents of C2-C4 unsaturated alkenes and aromatic hydrocarbons are quite low, suggesting that the metallogenic processes have not been affected by magmatic activities. Chemical equilibrium studies show that these hydrocarbons may be a mixture of organic gases generated by microorganism activity and those by thermal cracking of type-n kerogens (kukersite) in sedimentary host rocks, and the former may constitute more than two-thirds, implying that microorganism might have played an important role in the metallogenesis. The equilibrium temperature of the latter is about 300℃, which is much higher than the geothermal temperature at the estimated depth of metallogenesis. Thus, the light hydrocarbons generated by thermal cracking of kerogens probably originated in the deep part of the sedimentary basins and then migrated through a long distance to shallower horizons of the basin. Based on the composition of light hydrocarbons in fluid inclusions, the authors infer that the Songxi deposit was formed in a continental rift. The analytical data presented in this paper support from one aspect the genetic model that the Songxi deposit may be a sedimentary hot brine transformed deposit instead of a submarine basic volcanic exhalation and low-medium temperature volcanic hydrothermal fluid filling deposit proposed by most previous researchers.

关键词： light hydrocarbons fluid inclusion Ag (Sb) deposit Songxi Guangdong China

An Effective Method to Determine the Distribution Boundary of Cobalt-Rich Fe-Mn Crusts on a Guyot: Synchronous Application of Sub-bottom Profiling and Deep-Sea Video Recording

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Journal of China University of Geosciences 2005年第2期16卷 178-182页

作者： HeGaowen LiangDonghong SongChengbin sunxiaoming WuShuigen ZhouJianping ZhangXuehua Department of Earth Sciences Sun Yat-sen UniversityGuangzhou510275China Guangzhou Marine Geological Survey Guangzhou 510760China Second Institute of Oceanography State Ocean AdministrationHangzhou 310012China

Determining the upper boundary of the cobalt-rich crust distribution of a guyot is important for estimating the mineral resources available, however, it has also long been an unsolved question. Correlations between the sub-bottom structures, revealed by sub-bottom profiling, and crust distribution can be revealed for the first time by the synchronous application of sub-bottom profiling and deep-sea video recording. The lower boundary of the sediment corresponds with the upper boundary of the crust. By analysis of these two kinds of data, the lower boundary of the sediment can be determined; therefore, the upper boundary of the crust distribution can be deduced. According to this method of analysis, the upper boundary of water depth of crust distribution of a seamount in the western Pacific is about 1 560 m.

关键词： sub-bottom profiling deep-sea video recording guyot cobalt-rich ferromanganese crust distribution boundary

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基于UWB的运动目标成像算法的分析与实现

基于UWB的运动目标成像算法的分析与实现

作者：孙晓明成都理工大学

学位级别：硕士

近年来,随着公交车着火事件的不断发生,公共安全问题成为人们关注的焦点之一。目前车站和机场都设有安检处,通过安检设备对乘客携带的物品进行检测,防止给旅客的乘车带来安全隐患。然而考虑成本的因素,对于公交车没有这些检测设备的安装... 详细信息

近年来,随着公交车着火事件的不断发生,公共安全问题成为人们关注的焦点之一。目前车站和机场都设有安检处,通过安检设备对乘客携带的物品进行检测,防止给旅客的乘车带来安全隐患。然而考虑成本的因素,对于公交车没有这些检测设备的安装,因此不免给乘客的人身安全带来威胁。针对该现状,作者的导师已经申请了四川省科技计划项目“公交车危险品自动检测报警系统研究”。本论文在该项目的基础上,提出利用超宽带技术对运动的目标进行成像处理,进行相应的理论实现,是该项目前期的理论研究部分。论文描述了动目标成像的研究背景、研究意义以及超宽带成像技术的国内外现状,分析了超宽带的理论知识,包括对其定义、主要系统方案、技术的特性和应用上的分析。在超宽带理论的基础上,论文首先对运动目标反射的回波建立相应的数学模型,以运动的圆形目标为研究对象,建立数学模型时,对时延、脉冲宽度等因素给信号造成的影响进行了分析;然后根据建立的数学模型利用超宽带检测技术对动目标进行检测,这其中包括了传统的动目标检测算法和基于超宽带的动目标检测算法,以理论分析和仿真实验相结合的方法进行对比,体现利用超宽带检测技术在动目标检测上的优势,能达到更好的检测效果;经过对目标的检测,接下来重点研究基于超宽带的动目标成像技术。在成像算法中主要对椭圆包络线成像算法进行了分析和实现,通过对该算法基本原理的分析,总结出该算法在成像处理过程中的基本步骤,方便对该算法更好的理解和应用,接着与相似的圆形包络线算法进行性能上的对比,建立仿真实验并通过不同的仿真结果对阐述的理论进行验证,突出该算法在动目标成像上能达到很好的成像效果;最后在对椭圆包络线成像算法的总结中,提出该算法在实际应用中存在不足,即成像处理的对象为单目标。为了弥补该缺陷引用基于超宽带的时间反转成像算法,该算法根据不同目标能量聚焦强度的不同,能对多目标进行成像。但是多目标在反射的回波中存在重叠,因此提出了改进的方法,即利用Keystone变换的方法对回波进行分离处理,对分离后的回波运用该算法能显示出较好的目标图像,再对目标成像域进行分割,就可以利用椭圆包络线成像算法对不同的目标完成边界成像效果。本文在结构上采用先检测后成像的方法。针对多目标运动的成像处理,本文提出相应的改进优化方案,先对回波的重叠问题进行分离,再利用两种成像算法的结合完成对多目标的成像。在利用超宽带技术对运动的目标成像时,不同的成像算法有着不同的优势,作者利用两种成像算法在不同方面的优势,加之一定的改进方法,解决对多目标显示出高分辨率成像效果难的问题。当然,在对该课题的研究中,对理论分析的验证采用的更多的是仿真实验,利用Matlab仿真工具得出相应的仿真结果。通过对该课题的分析,一方面研究超宽带运动目标的成像算法,另一方面能够对项目接下来的工作提供新的思路。

关键词：超宽带技术动目标检测动目标成像椭圆包络线 Keystone变换

藏南喜马拉雅造山带造山型马扎拉Au-Sb矿床和沙拉岗Sb矿床流体包裹体He-Ar同位素组成:对成矿流体来源的制约

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岩石学报 2018年第12期34卷 3525-3538页

作者：翟伟郑思琦孙晓明韦慧晓莫儒伟张凌宇周峰易建洲中山大学海洋科学学院广州510006 广东省海洋资源与近岸工程重点实验室广州510006 中山大学地球科学与工程学院广州510275 广东省有色金属地质勘查局地质调查院广州510080 西藏地质矿产勘查局地质调查院拉萨851400

马扎拉Au-Sb矿床和沙拉岗Sb矿床是藏南金锑成矿带中典型的造山型矿床。马扎拉Au-Sb矿床中矿体以含金辉锑矿石英脉的形式产于下中侏罗统陆热组地层中,主要组成矿物有自然金、辉锑矿、石英和碳酸盐矿物;沙拉岗Sb矿床中矿体主要以辉锑矿石... 详细信息

马扎拉Au-Sb矿床和沙拉岗Sb矿床是藏南金锑成矿带中典型的造山型矿床。马扎拉Au-Sb矿床中矿体以含金辉锑矿石英脉的形式产于下中侏罗统陆热组地层中,主要组成矿物有自然金、辉锑矿、石英和碳酸盐矿物;沙拉岗Sb矿床中矿体主要以辉锑矿石英脉的形式产于下白垩统多久组地层和辉长岩体中,主要组成矿物为辉锑矿、辰砂、锑华、石英和少量碳酸盐矿物。在两个矿床的矿脉石英和辉锑矿中均发现有三类原生和假次生包裹体:水溶液包裹体、CO2-水溶液包裹体和有机包裹体。流体包裹体显微测温结果显示:马扎拉Au-Sb矿床的成矿温度为160～280℃,沙拉岗Sb矿床的成矿温度为140～240℃。He-Ar同位素分析显示马扎拉Au-Sb矿辉锑矿石英脉矿石中辉锑矿和石英以及赋矿地层中沉积层状硫化物中黄铁矿的流体包裹体均具有低的3He/4He比值,分别为0. 01382～0. 05642Ra和0. 03353～0. 08744Ra,40Ar/36Ar比值具有比较大的变化范围,分别为346. 8～4770. 1和349. 4～2689. 1;沙拉岗Sb矿床中辉锑矿样品的3He/4He比值为0. 02385～0. 11488Ra,40Ar/36Ar比值变化小,为300. 6～537. 5。与藏南Au-Sb成矿带中造山型Au矿床成矿流体中含一定量的幔源挥发份相对比,马扎拉AuSb矿床和沙拉岗Sb矿床成矿流体中均无幔源流体的参与,马扎拉Au-Sb矿床成矿流体为壳源变质流体与改造型饱和大气水形成的混合流体;沙拉岗Sb矿床成矿流体以改造型饱和大气水为主,并有壳源变质流体的加入。

关键词：造山型Au-Sb矿床 He-Ar同位素幔源流体变质流体改造型饱和大气水

采用强迫风冷的压缩机用永磁电机三维温度场分析

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电机技术 2020年第6期 15-20页

作者：高俊孙晓明王瑾于占洋沈阳工业大学国家稀土永磁电机工程技术研究中心 110870 沈阳鼓风机集团通风装备科技有限公司 211169

对一台采用强迫风冷的压缩机用内置式永磁同步电机的三维温度场进行建模和分析。首先,根据永磁电机的设计参数,对气隙导热系数进行了等效计算;在此基础上,根据散热风扇的流量计算出永磁电机机壳表面的风流速,进而得到不同型号风扇作用... 详细信息

对一台采用强迫风冷的压缩机用内置式永磁同步电机的三维温度场进行建模和分析。首先,根据永磁电机的设计参数,对气隙导热系数进行了等效计算;在此基础上,根据散热风扇的流量计算出永磁电机机壳表面的风流速,进而得到不同型号风扇作用下电机机壳边界处的散热系数。最后,基于有限元仿真对电机的三维温度场进行了计算,对不同风速冷却下电机的温度场分布情况进行了分析。

关键词：强迫风冷压缩机用永磁同步电机三维温度场有限元仿真

用挤出滚圆法制造球形微丸微粒的基本方法和设备

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化工进展 1998年第3期17卷 44-46,49页

作者：潘家祯孙晓明朱大滨房爱东华东理工大学化工机械研究所上海200237

由于球粒在造粒中有着优越的性能，开发用工业方法制备大小均一、圆球度好、表面光洁的球粒造粒方法有着巨大的应用前景。医药工业缓释、控释制剂的发展更迫切需要开发大规模制造球粒的方法和设备。本文介绍了用挤出滚圆方法制造球形微... 详细信息

由于球粒在造粒中有着优越的性能，开发用工业方法制备大小均一、圆球度好、表面光洁的球粒造粒方法有着巨大的应用前景。医药工业缓释、控释制剂的发展更迫切需要开发大规模制造球粒的方法和设备。本文介绍了用挤出滚圆方法制造球形微丸微粒的方法和设备。最新开发、研制的专利产品──球形微丸造粒机能够以工业规模批量制造球粒微九。球粒造粒容易、效率高。本设备不但可以为医药缓释、控释制剂新品种的开发提供装备，也可为食品、化肥、催化剂、精细化工等工业球粒造粒提供合适的设备。

关键词：挤出滚圆法球粒造粒医药微丸制药