Control of Melt Structures on Cu-Au Mineralization in Basic-Ultrabasic Complexes of Northern China

Based on systematic analyses of 72 samples of different basic-ultrabasic rocks, the present paper discusses the relationship between melt structure and Cu and Au mineralization. It is found that if the NBO/T, NBO, M2+, FeO and MgO values are relatively high and the T, M3+, Fe2O3 and CaO values are low the basic-ultrabasic melt will be favourable to Cu (Ni) mineralization, but if the former are low and the latter are high it is favourable to Au metallization. Cu ions occupy dominantly octahedra in basic-ultrabasic melt and the higher the NBO/T, NBO and M2+ values, the more the octahedra in the melt. Au element mainly takes the form of Au+ ions in basic-ultrabasic melt and the Au+ ions constitute tetrahedral sites together with Fe3+ ions. Therefore, low M2+ and high Fe3+, i.e. high oxygen fu-gacity, can promote the enrichment of Au+ ions and Au mineralization. Components NT (other than Au+), Al2O3 and SiO2 in basic-ultrabasic melt have no effect on metallogenetic species. As mentioned above, in relevant diagrams distribution areas of the characteristic values of ore-free melt and those of ore-forming melt are overlapped in different degrees, which possibly indicates that not all the magmas have mineralizing ability. It can be well distinguished whether basic-ultrabasic rocks are favourable to Cu or Au mineralization or they are just ore-free rocks by analysing integrated diagrams of the characteristic values of the magmatic melt structure.

Research on basic characteristics of complex system brittleness

Tbe goal of this paper is to research one new characteristic of complex system. Brittleness, which is one new characteritic of complex system, is presented in this paper. The linguistic and qualitative descriptions of complex system are also given in this paper.Otherwise, the qualitative description of complex system is presented at first. On the basis of analyzing the existing brittleness problems, linguistic description and mathematic description of brittleness are given as well. Three kinds of phenomena to judge brittleness of complex system are also given, based on catastrophe theory. Basic characteristics of brittleness are given on the basis of its mathematic description. Two critical point sets are defined by using catastrophe theory. The definition of brittleness and its related theory can serve the control of complex system, and provide theoretical basis for the design and control of complex system.

A TYPICAL RING-SHAPED ZONING BASIC-ULTRABASIC COMPLEX

I.GEOLOGICAL SETTING OF THE BASIC-ULTRABASIC COMPLEX The Yanbian basic-ultrabasic complex is situated on the west edge of the middle section of the Chuan Dian (Sichuan Yunnan) SN-trending tectonic zone, intruding the unconformable contact zone between the Archeozoic Kangding complex and the Presinian Yanbian group. The country rocks of the complex are magmatic and regional metamorphic rocks. The complex is stretched NW, irregularly ellipsoidal in shape, 9 km in length (SN)

基本路径测试技术及应用研究

基本路径测试法是一种白盒测试方法,文章将程序流程图映射成流图,探讨了程序的3种基本结构映射成流图的方法,计算了流图的环形复杂度并确定了基本测试路径,从而为每条基本路径设计了测试用例。实践证明,基本路径测试法适用于执行路径较多的程序,通过选择有代表性的路径进行测试,可有效提高测试效率。

大兴安岭北段盘古河上游早古生代中基性杂岩体U-Pb年龄、地球化学特征及其地质意义

额尔古纳地块出露的早古生代岩浆岩的成因、源区特征及动力学背景对于揭示恢复额尔古纳地块及其周缘地区的构造演化历史具有重要意义。笔者等选取大兴安岭北段盘古河上游地区早古生代中基性杂岩体进行了岩石学研究和锆石U-Pb年代学及岩石地球化学分析。野外调查及室内研究表明杂岩体的岩石类型以角闪辉长岩和辉长岩为主,少见石英闪长岩、闪长岩、辉石岩、橄榄辉长岩等中性岩和超基性岩。测年结果显示,角闪辉长岩的成岩年龄为479.2±2.1 Ma,表明该杂岩体形成时代为早奥陶世。地球化学组成上,盘古河上游早古生代中基性杂岩体SiO_(2)含量介于40.74%~54.95%,Fe_(2)O_(3)^(T)含量为3.99%~14.66%,MgO含量介于3.36%~17.78%,Mg^(#)值为47~79,为(高钾)钙碱性系列岩石,相对富集轻稀土元素,亏损重稀土元素,δEu=0.77~2.06,相对富集Rb、Ba、U、K、Pb和Sr等大离子亲石元素及放射性元素,亏损Nb、Ta、Ti等高场强元素,与俯冲带弧岩浆岩地球化学特征类似。岩浆来源于以俯冲流体交代为主、沉积物熔体交代为辅的岩石圈地幔部分熔融。源区以含尖晶石的石榴二辉橄榄岩为主,少量为尖晶石二辉橄榄岩,并在上升过程中经历了不同程度的结晶分异作用。结合区域岩石地层资料,综合分析表明盘古河上游早古生代中基性杂岩体形成于大陆拉张带(或初始裂谷)的构造环境,很可能与西伯利亚板块和额尔古纳地块碰撞后岩石圈伸展背景有关。

Dynamic analysis of a sexually transmitted disease model on complex networks

In this paper,a sexually transmitted disease model is proposed on complex networks,where contacts between humans are treated as a scale-free social network.There are three groups in our model,which are dangerous male,non-dangerous male,and female.By mathematical analysis,we obtain the basic reproduction number for the existence of endemic equilibrium and study the effects of various immunization schemes about different groups.Furthermore,numerical simulations are undertaken to verify more conclusions.

Preparation of basic nickel carbonate particles in solution system of Ni(Ⅱ)-NH_3-CO_3^(2-)-H_2O

Based on the principles of simultaneous equilibrium and mass balance, a series of thermodynamic equilibrium equations of Ni（Ⅱ）-NH3-CO2-3-H2O system at ambient temperature were deduced theoretically and the thermodynamic diagrams of lg[Ni]T versus pH at different solution compositions were drawn, which was quite effective to explain the formation mechanism of precipitation particles with different microscopic shapes. When pH of the solution is below （7.0,） free nickel ions are dominant and when the precipitant is added, the fast coagulation will take place leading to the loose flocculation particles. While pH is above 7.0, because of the coordination of nickel ion with ammonia, the precipitation proceeds slowly accompanying with the release of Ni2+ from the multi-coordinated Ni（NH3）2+n（n=1, 2, …, 6）, which easily leads to the formation of the dense spherical particles.

复杂服务环境下自然资源信息化应用微服务架构设计与实现

针对当前自然资源协同建设中的服务耦合度高、服务扩增性弱、协同性和集成性差等复杂情况,本文构建了一种复杂服务环境下自然资源微服务架构,对自然资源微服务内容、自然资源微服务部署和编排、基于服务网格的自然资源微服务治理进行设计,并以江西省国土空间基础信息平台为依托构建了综合服务系统。实验表明,本架构具有较好的高并发、高扩展性能,可以很好地进行自然资源微服务治理,保障了土地、矿产、地勘、测绘地理信息、国土空间规划等30多项自然资源业务的正常开展,有效支撑自然资源协同建设和服务管理应用。

Image segmentation of small defects in precision weldments with complex structure

In this paper, the X-ray nondestructive test method of small defects in precision weldments with complex structure was presented. To resolve the difficulty of defect segmentation in variable grey image, the image processing based on Visual Basic programming method was adopted. The methods of automatic contrast and partial grey stretch were used to enhance the X-ray detection image which has relatively low contrast, then automatic threshold method was carried out to segment the two high intensity zones, and weld zones which contain the small defects was extracted. Smoothing and sharpen processing were proceeded on the extracted weld zones, and small defects in X-ray detection image of weldments with complex structure were segmented by using the method of background subtraction in the end. The effects of raster were eliminated, and because of that the image processing was only proceeded on the extracted weld zones, the calculated speed using the above provided algorithm was improved.

Visual Basic编程用于络合物稳定常数的数据处理

当金属离子与弱酸或弱碱络合时，将引起溶液中ｐＨ值的显著变化，用ｐＨ滴定法测定该络合物的逐级稳定常数．根据Ｂｅｊｅｒｒｕｍ生成函数概念ｎＭ＝ＣＬ－［Ｌ］ＣＭ（１）采用ＶｉｓｕａｌＢａｓｉｃ编程，经微机处理即可便捷准确地计算出络合物的逐级稳定常数，该法是...

Study on the supramolecular systems of two basic violets with cyclodextrins by MWNTs/Nafion modified glassy carbon electrode

Abstract The electrochemical properties of two basic violets （methyl violet and ethyl violet） at the MWNTs/Nafion modified glassy carbon electrode were investigated. The redox of the basic violets is two-electron and two-proton process, and methyl violet presents stronger electron transfer capacity than ethyl violet. Meanwhile, the inclusion constants of the two basic violets with five CDs were determined by differential pulse voltammetry （DPV）. The two basic violets and CDs can form 1：1 complexes, The inclusion capacities of the two basic violets follow the same order： CM-β-CD 〉 HP-β-CD 〉 TM-β-CD 〉 DM-β- CD 〉 β-CD. ？2009 Yu Jing Guo. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

乡村公共服务供给基本单元转换及其治理逻辑

文章以乡村的差序性与治理的整体性为理论分析框架,开展基于行政村、村民小组为基本单元的公共服务资源下沉边界比较,认为村民小组是乡村基层治理最为理想的基本单元。在此基础上,提出筹建公共服务微型综合体,将政府内部管理、外部服务职能和村民自治、全社会公益服务要素有机架构与整合,构建起多元主体参与、多要素整合、多功能服务实现机制,对传统公共服务供给体系予以重组或流程再造。为最大化乡村公共服务基本单元内含的差序性与整体性功能集合效应,建议顶层设计公共服务微型综合体管理办法、多部门协同落实公共服务微型综合体条件保障、建立健全考核激励机制。

理技融合型军事人才培养理念、模式及机制研究

当前新一轮理论与科技革命席卷而来,催动理技融合理念从军事科研指导范畴溢出,向人才培养拓展,向军官基础教育延伸。迫切需要把握理技融合培养军事人才的需求导向,变革育人理念思想,探索新的模式路径,构建新的生态机制,深化拓展基础教育的通识性复合性,夯实新型军事人才成长起点素质。

针状焦原料选择性加氢脱硫催化剂制备与性能

以改性氧化铝为载体,采用络合浸渍法,制备出低金属含量、高选择性脱硫催化剂。以催化裂化脱固油浆为原料,在反应温度为290~320℃,反应压力为6 MPa,氢油体积比为1000∶1,体积空速为1.0 h-1的条件下,考察了所制备催化剂的选择性脱硫性能。结果表明:浸渍过程中添加酸性有机助剂,催化剂孔道拓宽,酸性增强,载体与活性金属相互作用增强;浸渍过程中添加碱性有机助剂,催化剂孔道拓宽,酸性降低,载体与活性金属相互作用减弱,有利于活性金属硫化形成更多活性位,催化剂的脱硫性能明显增强;在反应温度为320℃时,采用碱性络合剂制备的催化剂,加氢后产品含硫量降至4970μg/g,脱硫率为55.6%,3~4环芳烃质量分数为42.1%,保留率为83.9%,适合作为优质针状焦原料。

三宫铜镍矿地质—地球物理特征及找矿建议

新疆三宫铜镍矿成矿地质背景优越,康古尔塔格深大断裂以北的重力异常产出部位,是寻找铜镍硫化物矿床有利地段。研究区中部的基性杂岩体中是此次研究的重点对象,根据杂岩体的结构、构造,可以划分出边部岩相和中部岩相,矿体主要赋存在中部岩相,岩性为细粒橄榄辉长岩、中细粒辉长岩。矿体在走向上向上呈向两侧缩小的透镜体、倾向上呈层状产出、深部有膨大的趋势,品位总体相对均匀。C2异常是研究区范围内高磁磁异常区,与基性杂岩体对应、套合较好,整体呈北东向展布,该磁异常可能与中深部金属硫化物富集有关。矿体空间位置与激电测深成果套合较好,对应的视极化率ηs值在2.6%~2.8%之间、视电阻率ρs值在1800Ω.m~3000Ω.m之间。后续找矿应使用激电测深配合钻探验证的探矿手段.

孔雀绿-磷钼杂多酸离子缔合物分光光度法测定钨制品中的痕量磷

实验研究了在聚乙烯醇存在下,采用孔雀绿-磷钼杂多酸离子缔合物分光光度法测定钨制品中痕量磷。考察了掩蔽剂的选择及用量、硫酸用量、钼酸铵用量、孔雀绿用量、聚乙烯醇用量、显色时间以及显色温度等几个关键因素对测定结果的影响。实验表明,采用柠檬酸络合钨以及钨基体匹配工作曲线消除钨的干扰,在聚乙烯醇存在下,磷钼杂多酸与碱性染料孔雀绿反应生成稳定的离子缔合物。该缔合物的最大吸收波长为620 nm,摩尔吸光系数ε为1.05×10^(5) L/(mol·cm),磷在0~0.08μg/mL含量范围内遵守朗伯比尔定律。该方法的线性相关系数R2=0.9998,加标回收率在99%~102%之间,可测量含量在0.0030%以下的痕量磷,实验结果满足目前钨制品生产中磷的分析要求,可成功地应用于钨制品中磷含量的测定。

西天山菁布拉克基性杂岩体的地球化学特征

对与特克斯县菁布拉克铜镍硫化物矿床密切相关的基性杂岩体的地球化学研究表明,该岩体以低Ti、亏损Nb和Ta、富集大离子亲石元素和微富集轻稀土元素为特征。结合其同位素特征,提出该岩体的形成与南天山洋板块向中天山板块俯冲碰撞作用有关,岩浆起源于MORB源的亏损地幔,由于南天山洋壳向亏损地幔的俯冲,导致岩浆具有岛弧岩浆的特点。在侵位过程中遭受地壳和围岩的混染作用较弱。

新疆喀拉通克基性杂岩体的地球化学特征及其对矿床成因的约束

对与喀拉通克铜镍硫化物矿床密切相关的基性杂岩体的地球化学研究表明 ,该岩体以低Ti、亏损Nb和Ta、富集轻稀土元素和大离子亲石元素为特征。结合其同位素特征 ,提出该岩体的形成与西伯利亚板块和准噶尔板块碰撞后的拉张作用有关 ,岩浆起源于亏损的软流圈地幔 ,并在高位岩浆房中遭受了地壳的混染作用 ,从而导致岩浆中Si的增加 ,并引起富硫化物矿浆与富硅酸盐岩浆的不混熔作用。

南祁连亚曲含镍铜矿基性杂岩体形成年龄及机制探讨

通过亚曲岩体的实地调查和研究,利用ID-TIMS方法对岩体定年,获得(440.74±0.33)Ma成岩年龄,为加里东期。岩石地球化学特征分析及区域对比研究表明,亚曲基性杂岩体以低Ti、亏损Nb和Ta、富集轻稀土元素和大离子亲石元素为特征。结合其同位素特征,提出该岩体的形成与祁连山及其邻区460～440Ma时期俯冲向碰撞转换的作用有关,可能是岛弧岩浆作用的结果。这对于南祁连化隆一带区域铜镍找矿具有重要意义,亦对丰富完善早古生代岩浆铜镍硫化物矿床的研究和形成机制具有借鉴作用。

高铁三水铝石型铝土矿的烧结特性

以Al2O3含量为26.35%,总Fe含量为31.22%,铝硅比为3.17的某高铁三水铝石型铝土矿为原料,研究了碱度、焦粉用量、混合料水分等对烧结矿质量指标的影响。结果表明:烧结矿碱度增加时,其转鼓强度和成品率下降,烧结矿自粉化程度加重;焦粉用量增加时,烧结矿转鼓强度和成品率提高;当混合料水分为9.0%、焦粉用量为8.0%、烧结矿碱度为4时,烧结矿转鼓强度为69.1%,成品率为81.2%,垂直烧结速度为30 mm/min,利用系数为1.2 t/(h.m2);烧结矿碱度为4时,样品存放2天粉化率为5%,烧结矿平均粒度由22.2 mm减小到21.9 mm,延长存放时间,烧结矿自粉化率增大,平均粒度显著减小。该烧结矿的冶金性能能基本满足高炉冶炼的要求。