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1煤型稀有金属矿床:成因类型、赋存状态和利用评价显示文摘煤和含煤岩系中稀有金属元素的研究,是当今煤地质学研究的热点问题之一。煤和含煤岩系中高度富集并可以开发利用的稀有金属元素包括锂、钪、钛、钒、镓、锗、硒、锆、铌、铪、钽、铀、稀土元素(包括镧系元素和钇)、贵金属元素等。以煤-锗、煤-镓、煤-铀、煤-铌、煤-稀土元素等煤型稀有金属矿床为例,论述了这些矿床的地质成因、赋存状态和利用评价方法。煤型稀有金属矿床的研究,不仅对研究煤层的地质成因、煤层对比、含煤盆地形成与后期改造、区域地质历史演化和突发地质事件可以提供重要的煤地球化学和煤矿物学证据,而且对煤炭经济循环发展、煤炭利用过程中环境保护,以及对国家稀有金属资源安全也具有重要的现实和社会意义。代世峰 任徳贻 周义平 Vladimir VSeredin 李大华 张名泉 James C Hower Colin R Ward 王西勃 赵蕾 宋晓林 2014煤炭学报2014,39,8:111
2作为规制与治理工具的行政许可显示文摘源于私人生活中财产权人授权他人分享自己财产权实践的行政许可,正成为一种引人注目的政府规制与治理工具。作为治理工具,行政许可承载了一系列不同的社会目标,规制有时只是其中一个主要目标。当行政许可被限定为规制工具时,可以假定其核心是实现对特定行为的控制,具体机制包括信息收集、准入控制、行为监管以及许可的执行。尽管许可制度具有筛选市场主体并对他们进行识别和规制等积极作用,但同时也存在巨大的负面作用,如限制和阻碍竞争、可能导致权力滥用,而且许可制度是有成本的。政府在采取许可制度过程中,应考虑其他能够达成相同制度目标的替代性工具。Colin Scott 石肖雪 2014法学研究2014,36,2:74
3南海西部越南岸外晚第四纪黏土矿物记录:物源分析与东亚季风演化显示文摘南海西部越南岸外MD05-2901孔晚第四纪450ka以来黏土矿物和氧同位素的高分辨率分析表明,伊利石、绿泥石和高岭石含量表现出明显的冰期-间冰期旋回变化,而蒙脱石含量呈现频率更高的周期性变化.物源分析表明,MD05-2901孔黏土矿物中的蒙脱石主要由巽他陆架及其主要源区印度尼西亚岛弧提供,伊利石和绿泥石主要由湄公河和红河提供,而高岭石则主要由珠江提供.高岭石/(伊利石+绿泥石)比值的变化显示强烈的100ka偏心率周期,指示了冰盖驱动的冬季风演化;而蒙脱石含量的高频变化除了具有冰盖驱动的41ka斜率周期以外,还具有23和19ka岁差周期、以及13ka半岁差周期,指示了热带驱动的夏季风演化.东亚冬季风的演化基本上与冰期-间冰期旋回一致,冰期时强盛,间冰期时明显减弱;而夏季风的演化则与北半球低纬夏季日射量吻合较好,日射量高时强盛,低时减弱.研究认为,高纬冰盖和低纬热带分别驱动了晚第四纪东亚冬季风和夏季风的演化,反映了东亚季风演化的双重和独立的驱动机制.刘志飞 赵玉龙 李建如 Christophe Colin 2007中国科学(D辑)2007,37,9:40
4Clay minerals in surface sediments of the Pearl River drainage basin and their contribution to the South China Sea显示文摘Clay minerals have played a significant role in the study of the East Asian monsoon evolution in the South China Sea by being able to track oceanic current variations and to reveal contemporaneous pa- leoclimatic changes prevailing in continental source areas.As one of the most important rivers input- ting terrigenous matters to the northern South China Sea,the Pearl River was not previously paid at- tention to from the viewpoint of clay mineralogy.This paper presents a detailed study on clay minerals in surface sediments collected from the Pearl River drainage basin(including all three main channels, various branches,and the Lingdingyang in the estuary)by using the X-ray diffraction(XRD)method. The results indicate that the clay mineral assemblage consists dominantly of kaolinite(35%-65%), lesser abundance of chlorite(20%-35%)and illite(12%-42%),and very scare smectite occurrences (generally<5%).Their respective distribution does not present any obvious difference throughout the Pearl River drainage basin.However,downstream the Pearl River to the northern South China Sea,the clay mineral assemblage varies significantly:kaolinite decreases gradually,smectite and illite increase gradually.Additionally,illite chemistry index steps down and illite crystallinity steps up.These varia- tions indicate the contribution of major kaolinite,lesser illite and chlorite,and very scarce smectite to the northern South China Sea from the Pearl River drainage basin.The maximum contribution of clay minerals from the Pearl River is 72%to the northern margin and only 15%to the northern slope of the South China Sea.In both glacials and interglacials,kaolinite indicates that the ability of mechanical erosion occurred in the Pearl River drainage basin.LIU ZhiFei Christophe COLIN HUANG Wei CHEN Zhong Alain TRENTESAUX CHEN JianFang 2007Chinese Science Bulletin2007,52,8:33
5SJWD14121600000297显示文摘Jacques Ferlay Isabelle Soerjomataram Rajesh Dikshit Sultan Eser Colin Mathers Marise Rebelo Donald Maxwell Parkin David Forman Freddie Bray 2015Int. J. Cancer2015,,5:31
6粘土矿物在气候环境变化研究中的应用进展显示文摘在古环境和古气候的重建中,粘土矿物和碳-氧同位素、孢粉、树轮、冰芯等代用指标一样具有同等重要的地位。在没有地质构造运动影响时,气候是影响粘土矿物形成的主要因素,沉积物中的粘土矿物可用来分析古气候和古环境。粘土矿物及其组合可以独立或作为主要指标反映气候和环境变化,并已应用于高分辨率的晚第四纪地层的气候环境研究中。粘土矿物在很短的时间内也会发生明显地变化,不仅可以反映千年-百年尺度的气候环境变化,而且也可以反映几十年尺度的古气候环境变化过程。粘土矿物与其它指标对同一气候环境响应的相位差有待深入研究。不同的半定量分析方法测量出的同一剖面中粘土矿物的含量变化趋势和特征具有一致性。孙庆峰 陈发虎 Christophe Colin 张家武 2011矿物学报2011,31,1:31
7气候环境变化研究中影响粘土矿物形成及其丰度因素的讨论显示文摘粘土矿物在形成过程中受构造运动、气候、盆地规模、地表母岩、土壤、植被、地貌、介质环境、风以及成岩作用等多种因素的影响,这些因素对地层中粘土矿物的类型和含量的影响程度不一。构造运动和气候是影响粘土矿物形成的两个主要因素,对沉积物中的粘土矿物形成和含量以及影响粘土矿物形成的其他次要影响因素有着控制作用。在构造活动稳定的状态下,气候则成为影响粘土矿物形成和含量的决定性因素,其他因素尽管也有不同程度的影响,但可以看成是相对稳定不变的,粘土矿物携带的主要是气候环境变化的信息。地表水系的复杂程度引起的沉积物的混合程度影响粘土矿物信号的清晰度,沉积埋藏成岩作用对粘土矿物的影响也不容忽视。孙庆峰 Christophe Colin 陈发虎 张家武 2011岩石矿物学杂志2011,30,2:32
8阻力赋值对景观连接模拟的影响显示文摘景观连接度是研究景观结构和生态过程互馈关系的重要内容。在最小成本路径模拟中整合图论理论可有效辨识、评价斑块之间的潜在连接,近些年逐步应用于景观连接模拟、生态网络构建等研究中。理论上,模型的重要参数之一,生物体通过不同景观单元的阻力系数应根据观测与实验等实证研究获取,但大多数情况下简化为土地适宜性评价结合专家经验为土地利用/覆盖类型打分,存在一定主观性与不确定性。因此,设计了1个三因素(阻力赋值方式、景观粒度和景观整体破碎度)的析因实验,以SIMMAP2.0景观中性模型产生的8个模拟景观为对象,研究不同的景观格局下,阻力赋值方式对连接模拟的影响;探讨、总结经验赋值带来的不确定性。结果表明,这3个因素均对景观连接模拟产生显著影响,并存在一定交互作用;阻力赋值绝对大小不会对模拟产生影响;而赋值倾向性能够显著改变最小成本路径的空间位置,并且这种影响程度依赖于景观粒度大小,而与景观整体破碎度交互关系不显著。针对阻力赋值方式与景观结构特征交互作用下连接模拟的规律性变化,提出一些建议,以提高连接模拟的准确性。陈春娣 吴胜军 Meurk Colin Douglas 吕明权 温兆飞 姜毅 陈吉龙 2015生态学报2015,35,22:32
9Petawatt and exawatt class lasers worldwide显示文摘In the 2015 review paper‘Petawatt Class Lasers Worldwide’a comprehensive overview of the current status of highpower facilities of>200 TW was presented.This was largely based on facility specifications,with some description of their uses,for instance in fundamental ultra-high-intensity interactions,secondary source generation,and inertial confinement fusion(ICF).With the 2018 Nobel Prize in Physics being awarded to Professors Donna Strickland and Gerard Mourou for the development of the technique of chirped pulse amplification(CPA),which made these lasers possible,we celebrate by providing a comprehensive update of the current status of ultra-high-power lasers and demonstrate how the technology has developed.We are now in the era of multi-petawatt facilities coming online,with 100 PW lasers being proposed and even under construction.In addition to this there is a pull towards development of industrial and multi-disciplinary applications,which demands much higher repetition rates,delivering high-average powers with higher efficiencies and the use of alternative wavelengths:mid-IR facilities.So apart from a comprehensive update of the current global status,we want to look at what technologies are to be deployed to get to these new regimes,and some of the critical issues facing their development.Colin N.Danson Constantin Haefner Jake Bromage Thomas Butcher Jean-Christophe FChanteloup Enam A.Chowdhury Almantas Galvanauskas Leonida A.Gizzi Joachim Hein David I.Hillier Nicholas W.Hopps Yoshiaki Kato Efim A.Khazanov Ryosuke Kodama Georg Korn Ruxin Li Yutong Li Jens Limpert Jingui Ma Chang Hee Nam David Neely Dimitrios Papadopoulos Rory R.Penman Liejia Qian Jorge J.Rocca andrey A.Shaykin Craig W.Siders Christopher Spindloe Sándor Szatmári Raoul M.G.M.Trines Jianqiang Zhu Ping Zhu Jonathan D.Zuegel 2019High Power Laser Science and Engineering2019,7,3:33
10SDN在IP网络演进中的作用显示文摘Web已经改变了一切。新的服务每天都在出现,并且有些服务一夜之间就能够获得巨大的用户量,导致网络中的使用方式和流量模式完全难以预测。过去所建立的基础设施难以适应这些新变化,为了满足这些需求,网络必须能够快速、自动、经济地适应新的变化。软件定义网络(SDN)和网络功能虚拟化(NFV)就是其中两个能灵活地使能上述需求的技术。本文描述了SDN在IP网络领域中所起的作用(包括在实现NFV方面的关键作用),并介绍了关于网络如何引入SDN和NFV的场景和多个使用案例,用于说明SDN和NFV如何使得网络更加敏捷、可编程、优化地支持业务和用户的特殊需求。Mark M.Clougherty Christopher A.White Harish Viswanathan Colin L.Kahn 2014电信科学2014,30,5:25
11城市生态网络功能性连接辨识方法显示文摘城市生态网络是景观生态学应用领域研究的热点和重点之一,识别、评估生境之间的连接是构建生态网络的关键环节。在总结已有连接辨识方法的基础上,提出采用最小费用模型和图论分析相结合的方法,探讨功能性连接的辨识和优先恢复途径。以新西兰基督城为案例,分别利用景观发展强度指数建立阻力面,新西兰鸡毛松(Dacrycarpus dacrydioides)种子最大传播距离作为连接阈值来模拟、评价网络连接。结果表明:在1200 m距离阈值下,共有408条连接,其重要性分为10类。其中Richmond—Petrie公园,Hansons—Auburn保护地,Centaurus公园—King George保护地是整个生态网络的关键连接;若去除,景观整体连接度将下降31.73%。此外,研究发现连接重要值与两端的源面积之和没有显著相关性,即面积大的源斑块之间的连接不一定对网络构建起关键作用,这一结论还有待进一步证明。针对缺少动物迁移资料的城市环境,改进最小费用模型和网络连接分析的部分参数;可操作性与实用性强,对中国城市区域生态恢复建设、栖息地选择具有借鉴意义。陈春娣 Meurk D. Colin Ignatieva E. Maria Stewart H. Glenn 吴胜军 2015生态学报2015,35,19:25
12Late Quaternary clay minerals off Middle Vietnam in the western South China Sea: Implications for source analysis and East Asian monsoon evolution显示文摘High-resolution clay mineral records combined with oxygen isotopic stratigraphy over the past 450 ka during late Quaternary from Core MD05-2901 off Middle Vietnam in the western South China Sea are re-ported to reconstruct a history of East Asian monsoon evolution. Variations in Illite, chlorite, and kaolinite contents indicate a strong glacial-interglacial cyclicity, while changes in smectite content present a higher frequency cyclicity. The provenance analysis indicates a mixture of individual clay minerals from various sources surrounding the South China Sea. Smectite derived mainly from the Sunda shelf and its major source area of the Indonesian islands. Illite and chlorite originated mainly from the Mekong and Red rivers. Kaolinite was provided mainly by the Pearl River. Spectral analysis of the kaolin-ite/(illite+chlorite) ratio displays a strong eccentricity period of 100 ka, implying the ice sheet-forced win-ter monsoon evolution; whereas higher frequency changes in the smectite content show an ice sheet-forced obliquity period of 41 ka, and precession periods of 23 and 19 ka and a semi-precession period of 13 ka as well, implying the tropical-forced summer monsoon evolution. The winter monsoon evolution is generally in coherence with the glacial-interglacial cyclicity, with intensified winter monsoon winds during glacials and weakened winter monsoon winds during interglacials; whereas the summer monsoon evolution provides an almost linear response to the summer insolation of low latitude in the Northern Hemisphere, with strengthened summer monsoon during higher insolation and weakened summer monsoon during lower insolation. The result suggests that the high-latitude ice sheet and low-latitude tropical factor could drive the late Quaternary evolution of East Asian winter and summer monsoons, respectively, implying their diplex and self-contained forcing mechanism.Christophe COLIN 2007Science China Earth Sciences2007,50,11:24
13基于电场总场矢量有限元法的接地长导线源三维正演显示文摘电磁场数值模拟的背景场/异常场算法是三维正演的有效策略之一,优点为采用解析法计算电磁场背景场代替场源项、克服了场源奇异性,缺点为不适用于发射源布置于起伏地表或背景模型复杂的情形.总场算法是直接对电磁场总场开展数值模拟,其难点是有效加载场源、保证近区与过渡区数值解精度.本文以水平电偶源形式分段加载接地长导线源,并以电场总场Helmholtz方程为矢量有限元法控制方程,实现了基于非结构化四面体网格剖分的接地长导线源频率域电磁法三维正演.通过与均匀全空间中水平电偶源产生的电场解析解对比,验证了本文算法的正确性,并分析了四面体外接圆半径与其最短棱边的最大比值和四面体二面角最小值对数值解精度的影响规律.通过与块状高导体地电模型的积分方程法、有限体积法和基于磁矢量势Helmholtz方程的有限元法数值解对比,进一步验证了本文算法正确性,同时说明了非结构化四面体网格能够更加精细地剖分电性异常体,利于获得精确数值解.李建慧 Colin G.Farquharson 胡祥云 曾思红 2016地球物理学报2016,59,4:23
14A high-resolution clay mineralogical record in the northern South China Sea since the Last Glacial Maximum,and its time series provenance analysis显示文摘High-resolution clay mineralogical analysis of Core MD05-2904 in the northern South China Sea(SCS) covering the period since the Last Glacial Maximum shows that illite(29%-48%),smectite(14%-45%),chlorite(17%-28%),and minor kaolinite(6%-14%) comprise the clay mineral assemblage,and that time series variation does not present glacial-interglacial cyclicity.Provenance analysis indicates three end-member sources:almost all smectite derives from Luzon,all kaolinite is sourced from the Pearl River,and illite and chlorite originate from both the Pearl River and Taiwan.By comparing clay mineral compositions in surface sediments from the three major source areas and of the SCS,we reconstructed a time series of clay mineral contribution from the major provenances to the northern slope of the SCS using the linear separation method for illite crystallinity.There were three stages of provenance change.(1) During 24.1-17.5 ka BP,contributions from Taiwan and Luzon were similar(30%-40%),while that from the Pearl River was only 25%.(2) During 17.5-14.0 ka BP,the contribution from Luzon decreased rapidly to 20%-25%,while that from Taiwan increased to 35% from an average of 25% at 18 ka BP,and that from the Pearl River increased largely to 40%.(3) During the Holocene,differences in contributions from the three major provenances increased:the contribution from Luzon increased slightly and then remained at 27%-35%,that from Taiwan increased rapidly and then remained at 55%-60%,and that from the Pearl River decreased to 15%.The change in clay mineral contributions from different provenances is influenced mainly by clay mineral production,monsoon rainfall denudation,oceanic current transport,and sea-level change.LIU ZhiFei LI XiaJing COLIN Christophe GE HuangMin 2010Chinese Science Bulletin2010,55,35:20
15南海北部末次冰盛期以来高分辨率黏土矿物记录及其时间序列物源区分析显示文摘南海北部MD05-2904孔末次冰盛期以来黏土矿物学的高分辨率分析表明,伊利石(29%~48%)、蒙脱石(14%~45%)、绿泥石(17%~28%)和少量高岭石(6%~14%)构成了该孔的黏土矿物组合,其时间序列变化不具冰期-间冰期的旋回特征.物源区分析显示,MD05-2904孔的蒙脱石几乎全部都是源自吕宋岛,全部高岭石都是源自珠江,而伊利石和绿泥石分别由珠江和台湾岛提供.根据同这3个主要物源区和南海表层现代沉积物中黏土矿物成分的对比,采用伊利石结晶度的线性剥离方法,建立了各主要物源区对南海北部陆坡黏土矿物相对贡献量的时间序列变化.研究结果发现,吕宋岛和台湾岛的贡献在24.1~17.5kaBP都维持在30%~40%,而珠江的贡献平均仅有25%;在进入17.5~14.0kaBP后,吕宋岛的贡献快速降为20%~25%,台湾岛的贡献从18kaBP的平均25%上升至平均35%,而珠江的贡献上升为平均40%;在进入全新世后,这3个主要物源区的贡献显著差异化,吕宋岛的贡献小幅上升并维持在27%~35%,台湾岛的贡献快速上升并维持在55%~60%,而珠江的贡献逐渐回落至全新世中晚期的平均15%.各物源区的黏土矿物贡献可能受黏土矿物形成、季风降雨剥蚀、洋流搬运能力、以及海平面变化等多种因素影响.刘志飞 李夏晶 COLIN Christophe 葛黄敏 2010科学通报2010,55,29:17
16Petawatt class lasers worldwide显示文摘The use of ultra-high intensity laser beams to achieve extreme material states in the laboratory has become almost routine with the development of the petawatt laser. Petawatt class lasers have been constructed for specific research activities,including particle acceleration, inertial confinement fusion and radiation therapy, and for secondary source generation(x-rays, electrons, protons, neutrons and ions). They are also now routinely coupled, and synchronized, to other large scale facilities including megajoule scale lasers, ion and electron accelerators, x-ray sources and z-pinches. The authors of this paper have tried to compile a comprehensive overview of the current status of petawatt class lasers worldwide.The definition of ‘petawatt class' in this context is a laser that delivers >200 TW.Colin Danson David Hillier Nicholas Hopps David Neely 2015High Power Laser Science and Engineering2015,3,1:16
1765岁以上老年人预防跌倒的指南显示文摘老年人常常跌倒,这是一个严重的大众健康问题,对人们的健康及医疗花费有很大的影响。本指南依据试验证据,提出了在不同环境下切实可行的预防跌倒的建议。目的是减少65岁以上老人的跌倒率及跌倒后的损伤。Gene Feder Colin Cryer Sheila Donovan YvonneCater代表指南发展小组 周谋望 2003英国医学杂志中文版2003,6,4:15
18SJWD14121600000297显示文摘Jacques Ferlay Isabelle Soerjomataram Rajesh Dikshit Sultan Eser Colin Mathers Marise Rebelo Donald Maxwell Parkin David Forman Freddie Bray 2015Cancer2015,,5:15
19燃煤电厂飞灰物质成分筛分磁选实验研究显示文摘在对飞灰显微特征、矿物构成、碳和硫分布、烧失量研究的基础上 ,采用筛分和高梯度磁选技术 ,就飞灰成分分离与分类利用的可行性作了试验和理论方面的详细考察 .结果表明 ,筛分和磁选能使硅酸盐质微珠、富铁质球粒及热解碳三类基本灰成分有效分离 ,并可实现对分选效果和精度的人为控制 。汤达祯 Colin Harvey 2000中国矿业大学学报2000,29,5:15
20加氢催化裂解技术用于高演化源岩有机质表征研究显示文摘加氢催化裂解技术作为近年来新发展起来的有机质大分子裂解技术,专门应用于大分子中共价键结合小分子的释放。本研究探索该技术应用于含油气沉积盆地高演化油气源岩原生有机质提取的可能性。以塔里木盆地下古生界油气源岩为例,选取了障壁泻湖相、欠补偿盆地相、闭塞欠补偿陆源海湾相、灰泥丘相等四类典型潜在源岩进行了加氢催化裂解实验,结果表明,加氢催化裂解产物中正构烷烃与甾烷的分布特征与上述源岩相完全吻合,证明加氢催化裂解实验可以有效地提取高演化油气源岩的原生有机质,为下一步实现该技术应用于油气源的对比奠定了基础。孙永革 Will Meredith Colin E Snape 柴平霞 2008石油与天然气地质2008,29,2:13
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