|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Progress in material removal mechanisms of surface polishing with ultra precision显示文摘Chemical mechanical polishing (CMP) process is commonly regarded as the best method for achieving global planarization in the field of surface finishing with ultra-precision. The development of investigation on material removal mechanisms for different materials used in com-puter hard disk and ultra-large scale integration fabrication are reviewed here. The mechanisms underlying the interac-tion between the abrasive particles and polished surfaces during CMP are addressed, and some ways to investigate the polishing mechanisms are presented. | XU Jin LUO Jianbin LU Xinchun ZHANG Chaohui PAN Guoshun | 2004 | Chinese Science Bulletin2004,49,16: | 25 |
| 2 | Zircon SHRIMP geochronology and geochemistry of TTG rocks in Sushui Complex from Zhongtiao Mountains with its geological implications显示文摘在宗陶·布莱克复杂的 Sushui 的 tonalite-trondhjermite-granodiorite (TTG ) 岩石能根据他们的锆石 U-Pb 年龄被划分成二个系列, geochemical 特征一是 subduction 相关的(SR ) 并且其它碰撞相关(CR ) 。和另外的晚太古代的岛弧 magmatism, SR TTG 岩石由于在东方、西方的黑人之间的海洋的 subduction 被开发在晚太古代;当 CR TTG 岩石在变厚的外壳的环境形成了时。它在 Paleoproterozoic 对在东方、西方的块之间的碰撞正在作出回应。所有这些特征支持宗陶·布洛克是在诺思中国 Craton 的中间的 Trans 北方中国 Orogen 的部分的一个模型。 | TIAN Wei LIU Shuwen LIU Chaohui YU Shengqiang LI Qiugen WANG Yueran | 2006 | Progress in Natural Science:Materials International2006,16,5: | 24 |
| 3 | An upper ocean response to Typhoon Bolaven analyzed with Argo profiling floats显示文摘In situ observations from Argo profiling floats combined with satellite retrieved SST and rain rate are used to investigate an upper ocean response to Typhoon Bolaven from 20 through 29 August 2012. After the passage of Typhoon Bolaven, the deepening of mixed layer depth(MLD), and the cooling of mixed layer temperature(MLT) were observed. The changes in mixed layer salinity(MLS) showed an equivalent number of increasing and decreasing because the typhoon-induced salinity changes in the mixed layer were influenced by precipitation, evaporation, turbulent mixing and upwelling of thermocline water. The deepening of the MLD and the cooling of the MLT indicated a significant rightward bias, whereas the MLS was freshened to the left side of the typhoon track and increased on the other side. Intensive temperature and salinity profiles observed by Iridium floats make it possible to view response processes in the upper ocean after the passage of a typhoon. The cooling in the near-surface and the warming in the subsurface were observed by two Iridium floats located to the left side of the cyclonic track during the development stage of the storm, beyond the radius of maximum winds relative to the typhoon center. Water salinity increases at the base of the mixed layer and the top of the thermocline were the most obvious change observed by those two floats. On the right side of the track and near the typhoon center when the typhoon was intensified, the significant cooling from sea surface to a depth of 200×104 Pa, with the exception of the water at the top of the thermocline, was observed by the other Iridium float. Owing to the enhanced upwelling near the typhoon center, the water salinity in the near-surface increased noticeably. The heat pumping from the mixed layer into the thermocline induced by downwelling and the upwelling induced by the positive wind stress curl are the main causes for the different temperature and salinity variations on the different sides of the track. It seems that more time is required for the anomalies in the subsurface to be restored to pretyphoon conditions than for the anomalies in the mixed layer. | LIU Zenghong XU Jianping SUN Chaohui WU Xiaofen | 2014 | Acta Oceanologica Sinica2014,33,11: | 23 |
| 4 | A matched cohort study of laparoscopy-assisted and open total gastrectomy for advanced proximal gastric cancer without serosa invasion显示文摘 | Lin Jianxian Huang Changming Zheng Chaohui Li Ping Xie Jianwei Wang Jiabin Lu Jun | 2014 | Chinese Medical Journal2014,,3: | 11 |
| 5 | China Argo project:progress in China Argo ocean observations and data applications显示文摘This paper reviews the current achievements of the China Argo project. It considers aspects of both the construction of the Argo observing array, float technology, and the quality control and sharing of its data. The developments of associated data products and data applications for use in the fields of ocean, atmosphere, and climate research are discussed, particularly those related to tropical cyclones(typhoons), ocean circulation,mesoscale eddies, turbulence, oceanic heat/salt storage and transportation, water masses, and operational oceanic/atmospheric/climatic forecasts and predictions. Finally, the challenges and opportunities involved in the long-term maintenance and sustained development of the China Argo ocean observation network are outlined.Discussion also focuses on the necessity for increasing the number of floats in the Indian Ocean and for expanding the regional Argo observation network in the South China Sea, together with the importance of promoting the use of Argo data by the maritime countries of Southeast Asia and India. | LIU Zenghong WU Xiaofen XU Jianping LI Hong LU Shaolei SUN Chaohui CAO Minjie | 2017 | Acta Oceanologica Sinica2017,36,6: | 10 |
| 6 | Improving the accuracy of image-based forest fire recognition and spatial positioning显示文摘Forest fires are frequent natural disasters.It is necessary to explore advanced means to monitor,recognize and locate forest fires so as to establish a scientific system for the early detection,real-time positioning and quick fighting of forest fires.This paper mainly expounds methods and algorithms for improving accuracy and removing uncertainty in image-based forest fire recognition and spatial positioning.Firstly,we discuss a method of forest fire recognition in visible-light imagery.There are four aspects to improve accuracy and remove uncertainty in fire recognition:(1)eliminating factors of interference such as road and sky with high brightness,red leaves,other colored objects and objects that are lit up at night,(2)excluding imaging for specific periods and azimuth angles for which interference phenomena repeatedly occur,(3)improving the thresholding method for determining the flame border in image processing by adjusting the threshold to the season,weather and region,and (4)integrating the visible-light image method with infrared image technology.Secondly,we examine infrared-image-based methods and approaches of improving the accuracy of forest fire recognition by combining the spectrum threshold with an object feature value such as the normalized difference vegetation index and excluding factors of disturbance such as interference signals,extreme weather and high-temperature animals.Thirdly,a method of visible analysis to enhance the accuracy of forest fire positioning is examined and realized;the method includes decreasing the visual angle,selecting central points,selecting the largest spots,and judging the selection of fire spots according to the central distance.Case studies are examined and the results are found to be satisfactory. | JIANG LiLi 1,QI QingWen 1,ZHANG An 1,GUO ChaoHui 2 & CHENG Xi 1,3 1 Institute of Geographical Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China 2 China Center for Resources Satellite Data and Applications,Beijing 100094,China 3Graduate University of Chinese Academy of Sciences,Beijing 100049,China | 2010 | Science China(Technological Sciences)2010,53,S1: | 9 |
| 7 | Guandishan Granitoids of the Paleoproterozoic Lüliang Metamorphic Complex in the Trans-North China Orogen:SHRIMP Zircon Ages,Petrogenesis and Tectonic Implications显示文摘The Paleoproterozoic L(u|¨)liang Metamorphic Complex(PLMC) is situated in the middle segment of the western margin of the Trans-North China Orogen(TNCO),North China Craton(NCC). As the most important lithological assemblages in the southern part of the PLMC,Guandishan granitoids consist of early gneissic tonalities,granodiorites and gneissic monzogranites,and younger gneissic to massive monzogranites.Petrochemical features reveal that the early gneissic tonalities and granodiorites belong to the medium-K calc-alkaline series;the early gneissic monzogranites are transitional from high-K calc-alkaline to the shoshonite series;the younger gneissic to massive monzogranites belong to the high-k calc-alkaline series,and all rocks are characterized by rightdeclined REE patterns and negative Nb,Ta,Sr,P,and Ti anomalies in the primitive mantle normalized spidergrams.SHRIMP zircon U-Pb isotopic dating reveals that the early gneissic tonalities and granodiorites formed at~2.17 Ga,the early gneissic monzogranites at~2.06 Ga,and the younger gneissic to massive monzogranites at~1.84 Ga.Sm-Nd isotopic data show that the early gneissic tonalities and granodiorites haveε_(Nd)(t) values of +0.48 to -3.19 with Nd-depleted mantle model ages (T_(DM)) of 2.76-2.47 Ga,and early gneissic monzogranites haveε_(Nd)(t) values of-0.53 to -2.51 with F_(DM)of 2.61-2.43 Ga,and the younger gneissic monzogranites haveε_(Nd)(t) values of -6.41 to -2.78 with a T_(DM)of 2.69-2.52 Ga.These geochemical and isotopic data indicate that the early gneissic tonalities, granodiorites,and monzogranites were derived from the partial melting of metamorphosed basaltic and pelitic rocks,respectively,in a continental arc setting.The younger gneissic to massive monzogranites were derived by partial melting of metamorphosed greywackes within the continental crust.Combined with previously regional data,we suggest that the Paleoproterozoic granitoid magmatism in the Guandishan granitoids of the PLMC may provide the best geological signature for the complete spectrum of Paleoproterozoic geodynamic processes in the Trans-North China Orogen from oceanic subduction,through collisional orogenesis,to post-orogenic extension and uplift. | LIU Shuwen LI Qiugen LIU Chaohui LU Yongjun ZHANG Fan | 2009 | Acta Geologica Sinica(English Edition)2009,83,3: | 9 |
| 8 | Design and experiment of variable rate orchard sprayer based on laser scanning sensor显示文摘During different growth periods,canopy size and density in orchards are variable,which need application conditions(flow rate and air flow)to be adjusted to match the canopy’s characteristics.In order to improve orchard sprayer’s automatic operating performance,an automatic variable-rate orchard sprayer(VARS)fixed with 40 electromagnetic valves and 8 brushless fans was developed based on the canopy’s spatial dimensions.Each solenoid valve and brushless motor can be individually adjusted in real-time through pulse width modulation(PWM)signals emitted by a control system to adjust each nozzle’s spout and fan rotation speed.A high-precision laser scanning sensor(light detecting and ranging,LIDAR)was adopted as the detector to measure the canopy volume using the variable rate algorithm principle.Field experiments were conducted in an apple orchard,and conventional air blast sprayer(CABS)and directed air-jet sprayer(DAJS)were tested as a comparison.Results showed that on average,46%less spraying solution was applied compared to conventional applications,while penetration rate was similar to DAJS.Normalized deposition in the canopy with variable application was higher than that of conventional applications,indicating that electronic sprayers are more efficient than conventional sprayers.It was also observed that VARS could significantly reduce off-target loss.The field experiment showed that the newly developed variable-rate sprayer can greatly reduce pesticide use and protect the environment for the orchard fruit production,and also provide a reference for design and performance optimization for plant protection machinery. | Longlong Li Xiongkui He Jianli Song Yajia Liu Aijun Zeng Liu Yang Chaohui Liu Zhixiong Liu | 2018 | International Journal of Agricultural and Biological Engineering2018,11,1: | 8 |
| 9 | Lead Isotopic Composition and Lead Source in the Bainiuchang Ag-polymetallic Deposit, Yunnan Province, China显示文摘在云南省的 Bainiuchang 存款,中国,在 Gejiu 矿石地和 Dulong 矿石之间地理上被定位地。除了 > 7000 t Ag 储备,存款也与很多驱散的元素炫耀大规模 Pb, Zn 和 Sn 储备(在里面, Cd, Ge, Ga,等等) 。我们系统地决定了存款的 Pb 同位素作文。海地板 exhalative 是在采矿区域的西北的沉积起源的矿石的 Pb 同位素比率,是 206Pb/204Pb = 17.758-18.537 , 207Pb/204Pb = 15.175-15.862 和 208Pb/204Pb = 37.289-39.424 ,当时那些矿石,那具有 magmatic 在采矿区域的东南的热水的重迭起源,分别地是 206Pb/204Pb = 17.264-18.359 , 207Pb/204Pb = 14.843-15.683 和 208Pb/204Pb = 36.481-38.838 。以在 magmatic 岩石或 magmatic 中的长石的 Pb 同位素作文从采矿区域的整个岩石的样品,我们决定了 Pb 同位素作文并且是获得了 Pb 同位素比率:206Pb/204Pb = 18.224-18.700, 207Pb/204Pb = 15.595-15.797 和 208Pb/204Pb = 38.193-39.608。然后,根据 Pb 同位素,变形岩石的作文取样从原生地,地下室在 Dulong 矿石地里暴露了,我们决定了 Pb 同位素作文并且是获得了同位素比率:206Pb/204Pb = 18.434-19.119, 207Pb/204Pb = 15.644-15.693,和 208Pb/204Pb = 38.514-38.832。并且寒武纪的沉积岩石的 Pb 同位素比率,在 Bainiuchang 采矿区域被暴露,是 206Pb/204Pb = 18.307-19.206, 207Pb/204Pb = 15.622-15.809,和 208Pb/204Pb = 38.436-39.932。由关于他们的 Pb 同位素作文比较矿石的二种类型,在 Bainiuchang 存款的铅主要从比在年龄的 Neoproterozoic 早的降低外壳的 granulite 被导出,这被显示,但是热水的液体可能提供了的 Yanshanian magmatic 象为矿石的 Sn 那样的形成矿石的元素的部分在采矿区域的南方堵住。 | ZHU Chaohui ZHANG Qian SHAO Shuxun ZHU Xiaoqing WANG Dapeng | 2008 | Acta Geologica Sinica(English Edition)2008,82,4: | 7 |
| 10 | Sulfur isotopic composition of the Bainiuchang super-large Ag polymetallic deposit,Yunnan Province,China: Implications for the source of sulfur in ore-forming fluids显示文摘The Bainiuchang deposit in Yunnan Province, China, is located geographically between the Gejiu ore field and the Dulong ore field. In addition to >7000 t Ag reserves, the deposit possesses large-scale Pb, Zn, Sn reserves and a mass of dispersed elements (i.e., In, Cd, Ge, Ga, etc.). Based on systematic studies of sulfur isotopic composition, the authors conclude: The Bainiuchang deposit experienced two epochs of metallogenesis, i.e., the Middle-Cambrian sea-floor exhalative sedimentary metallogenic epoch and the Yanshanian magmatic hydrothermal superimposition metallogenic epoch. In the two metallogenic epochs, the δ34S values of sulfides were all near 0, showing a tendency of being enriched slightly in heavy sulfur. The δ34S values of sulfides in the early metallogenic epoch are within the range of 2‰–5‰ with a peak value range of 2‰–3‰ and an average of 3.0‰, and those of sulfides in the late metallogenic epoch are within the range of 2‰–6‰ with a peak value of 3‰–4‰ and an average of 3.9‰. For the single metallogenic epoch, sulfur in the ore-forming fluids in the early epoch already reached isotopic equilibrium and was derived mainly from underneath the magma chamber or basement metamorphic igneous rocks. Sulfur in the sulfides in the late epoch was derived mainly from magmatic hydrothermal fluids formed in the process of remelting of the basement metamorphic igneous rocks. | XIE Hongjing ZHU Chaohui ZHANG Qian WANG Dapeng FAN Liangwu | 2009 | Chinese Journal Of Geochemistry2009,28,3: | 7 |
| 11 | New innovations in pavement materials and engineering:A review on pavement engineering research 2021显示文摘Sustainable and resilient pavement infrastructure is critical for current economic and environmental challenges.In the past 10 years,the pavement infrastructure strongly supports the rapid development of the global social economy.New theories,new methods,new technologies and new materials related to pavement engineering are emerging.Deterioration of pavement infrastructure is a typical multi-physics problem.Because of actual coupled behaviors of traffic and environmental conditions,predictions of pavement service life become more and more complicated and require a deep knowledge of pavement material analysis.In order to summarize the current and determine the future research of pavement engineering,Journal of Traffic and Transportation Engineering(English Edition)has launched a review paper on the topic of'New innovations in pavement materials and engineering:A review on pavement engineering research 2021'.Based on the joint-effort of 43 scholars from 24 well-known universities in highway engineering,this review paper systematically analyzes the research status and future development direction of 5 major fields of pavement engineering in the world.The content includes asphalt binder performance and modeling,mixture performance and modeling of pavement materials,multi-scale mechanics,green and sustainable pavement,and intelligent pavement.Overall,this review paper is able to provide references and insights for researchers and engineers in the field of pavement engineering. | JTTE Editorial Office Jiaqi Chen Hancheng Dan Yongjie Ding Yangming Gao Meng Guo Shuaicheng Guo Bingye Han Bin Hong Yue Hou Chichun Hu Jing Hu Ju Huyan Jiwang Jiang Wei Jiang Cheng Li Pengfei Liu Yu Liu Zhuangzhuang Liu Guoyang Lu Jian Ouyang Xin Qu Dongya Ren Chao Wang Chaohui Wang Dawei Wang Di Wang Hainian Wang Haopeng Wang Yue Xiao Chao Xing Huining Xu Yu Yan Xu Yang Lingyun You Zhanping You Bin Yu Huayang Yu Huanan Yu Henglong Zhang Jizhe Zhang Changhong Zhou Changjun Zhou Xingyi Zhu | 2021 | Journal of Traffic and Transportation Engineering(English Edition)2021,8,6: | 7 |
| 12 | Kuroshio intrusion into the South China Sea with an anticyclonic eddy: evidence from underwater glider observation显示文摘In this study, high-resolution temperature and salinity data obtained from three Sea-Wing underwater gliders were used together with satellite altimeter data to track the vertical thermohaline structure of an anticyclonic eddy that originated from the loop current of the Kuroshio southwest of Taiwan, China. One of the gliders crossed the entire eddy and it observed a remarkable warm anomaly of as much as 3.9℃ extending to 500 dbar from the base of the mixed layer. Conversely, a positive salinity anomaly was found to be above 200 dbar only in the anticyclonic eddy, with a maximum value of >0.5 in the mixed layer. Below the mixed layer, water of higher salinity (>34.7) was found, which could have been preserved through constrained vertical mixing within the anticyclonic eddy. The salinity in the upper layer of the anticyclonic eddy was much similar to that of the northwestern Pacific Ocean than the northern South China Sea, reflecting Kuroshio intrusion with anticyclonic eddy shedding from the loop current. | LIU Zenghong CHEN Xingrong YU Jiancheng XU Dongfeng SUN Chaohui | 2019 | Journal of Oceanology and Limnology2019,37,5: | 7 |
| 13 | Single event upset sensitivity of 45 nm FDSOI and SOI FinFET SRAM显示文摘In this work single event upset(SEU) sensitivity of 45 nm fully depleted silicon-on-insulator(FDSOI) static random access memory(SRAM) cell and that of SOI fin-shaped field-effect-transistor(FinFET) SRAM cell have been investigated by 3D TCAD simulations.The critical charges and SEU threshold linear energy transfer(LET) value of the two SRAM cells are consistent due to similar gate capacitance.The low electrical field and the high recombination rate account for the non-sensitivity to SEU in heavily doped drain region.Compared with FDSOI SRAM,SOI FinFET SRAM cell exhibits lower SEU sensitivity at the center of the gate.The smaller sensitive area in SOI FinFET SRAM cell may result in a smaller SEU saturation cross section than that of SOI FinFET SRAM. | TANG Du LI YongHong ZHANG GuoHe HE ChaoHui FAN YunYun | 2013 | Chinese Science Bulletin2013,58,7: | 6 |
| 14 | Comparison of the Morphology,Structures and Mechanical Properties of Teleost Fish Scales Collected from New Zealand显示文摘The mechanical properties and structures of fish scales have generated considerable research interest,however,comparative studies for different fish scales from difl^rent water regions have not been reported.In this paper,the surface morphologies,hierarchical structures and mechanical properties of four kinds of fish scales collected from freshwater,shallow sea,and deep sea in New Zealand are investigated.The results indicate that the surface morphologies of those fish scales are similar at ventro-lateral,dorso-lateral and anterior locations,and the hierarchical structures of those fish scales all consist of two layers:a bone layer and a collagen layer composed of collagen fibrils.However,the spiral angles of the collagen lamellaes of different scales are different.The largest are Mugil cephalus scales,while the smallest are Cyprinus carpio scales.Comparing the mechanical behaviors of those fish scales,the tensile strength of Carassius auratus scales is the largest,but the ductility is the lowest.Pristipomoides sieboldii scales have the best ductility.Further,the relationship between hierarchical structures and mechanical properties of fish scales is discussed.It is found that the spiral angles of the collagen lamellaes and bond/collagen thickness ratio both have a great influence on the mechanical properties of fish scales. | Deju Zhu Chaohui Zhang Peng Liu Laith A.Jawad | 2019 | Journal of Bionic Engineering2019,16,2: | 6 |
| 15 | Aurora-A modulates MMP-2 expression via AKT/NF-κB pathway in esophageal squamous cell carcinoma cells显示文摘食道的有鳞的房间癌(ESCC ) 是最普通的恶意之一。识别预言肿瘤前进和治疗学的分子的目标的新 markersfor 是必要的。它被报导了 Aurora-Aand 矩阵 metalloproteinases 的那 overexpressions (MMP-2 ) 2 可以支持肿瘤的恶意的发展。然而,关系 betweenAurora -- 在肿瘤病人的 A 和 MMP-2 表示没被调查。另外, Aurora-Aregulates MMP-2 表示不充分仍然是的内在的机制阐明了。在这研究,我们表明了那曙光 A, MMP-2 与配对的正常邻近的纸巾相比是 overexpressedin ESCC 纸巾(P ? 0.0001 ) 。曙光 A 的 Overexpression 与 ESCC 的淋巴节点转移被联系(P ?=? 0.01 ) 。显著地,曙光 A 蛋白质表示断然在 ESCC 纸巾与 MMP-2 蛋白质表示被相关(r ?=? 0.66, P ? 0.0001 ) 象在 ESCC 一样,房间排队。曙光 A 表示的水平断然也与 ESCC 房间的 invasioncapability 被相关。而且,曙光 A overexpression 显著地由 upregulationof MMP-2 表示增加了 ESCC 房间侵略。另外,曙光 A overexpression 支持了原子 factor-kappaB (NF-B ) 激活,和 Aurora-A-mediatedMMP-2 upregulation 被 NF-B 废除禁止者。进一步的分析证明 NF-B 的激活是严重地在房间 overexpressing 曙光 A 的 attenuatedby AKT 禁止者。一起拿,这些数据通过激活在 ESCC 房间表明小径的 AKT/NF-B 显示那曙光 A overexpression upregulatesMMP-2 表情。这些调查结果揭示那曙光 A 可以是的 beused 为 ESCC 的恶意的行为的判断的重要指示物,并且可以是为 cancertherapy 的一个吸引人的目标。 | Xiaoxia Wang Xiaozhong Li Chaohui Li Chun He Benhong Ren Oing Deng Wei Gao Binquan Wang | 2016 | Acta Biochimica et Biophysica Sinica2016,48,6: | 6 |
| 16 | Analysis on contact and flow features in CMP process显示文摘Contact pressure and flow features of chemical mechanical polishing/planarization (CMP) process were analyzed,taking advantage of the one-dimensional contact model of two layers and considering slurry flows. In this model,deformations of the bulk pad substrate and the asperities were considered. The deformations of the bulk pad sub- strate and the asperity layer,as well as the contact pressure and fluid pressure,were revealed with nu- merical methods. Numerical simulation results show a counterintuitive phenomenon: a diverging clear- ance is formed in the leading region of the wafer and thereby it gives rise to a suction pressure (subambi- ent pressure). A high stress concentration is pre- sented at the wafer edge and thereby over polishing can be introduced. The research provides some theoretical explanations for these two fundamental features of usual CMP processes. | ZHANG Chaohui LUO Jianbin LIU Jinquan DU Yongping | 2006 | Chinese Science Bulletin2006,51,18: | 5 |
| 17 | Lead Isotopic Composition and Lead Source of the Huogeqi Cu-Pb-Zn Deposit,Inner Mongolia,China显示文摘位于 ML Langshan 的北方面的 Huogeqi 矿石地, InnerMongolia 原生地发生在中间 Langshan 组变质岩,和矿体是层状的。在过去的二十年里,许多中国地质学家在 theHuogeqi Cu-Pb-Zn 沉积物上进行了研究,但是在那里,仍然是它的起源上的争吵。存款具有 sedimentafy 变形的重做的起源,一些认为它具有海地板 SEDEXorigin,并且其它有为 magmatic 重迭起源的偏爱的某倡导者。争吵的关键是关于形成矿石的材料的来源没有普通理解。Inthis 纸, Pb 同位素组成地区性阿凯亚早,原生地,基岩,在采矿区域的沉积变形的岩石和火山岩的各种各样的类型, LateProterozoic 和 Hercynian magmatic 被介绍并且与矿石铅作文相比,以便抑制矿石铅的来源。结果显示(1 ) 在矿石的硫化物有同类的 Pb 同位素组成,显示出一个狭窄的变化范围。他们的 ^(206 )Pb/^(204 ) Pbratios 在 17.027-17.317 的一个范围以内;^(207 )Pb/^(204 ) Pb 比率, 15.451-15.786 and^(205 )Pb/^(204 ) Pb 比率, 36.747-37.669;(2 ) Pb 同位素组成 regionalAchaean 早原生地基岩在地球的早阶段的进化的旧 Pb 同位素组成是特征的,它在一个更宽的范围上变化,在矿石的 Pb 同位素组成的思考重要差别。所有这些显示矿石铅的来源与基岩无关;(3 ) 在采矿区域的沉积变形的岩石被高度可变、更放射产生的 Pb 同位素组成描绘,他们的 Pbisotopic 比率显然比矿石的那些高,证明矿石铅没源于这些岩石的变形重做;(4 ) Pb 同位素组成近来 Proterozoicdiorite 斑粝岩和 Hercynian 花岗石比矿石的那些高。同时,在在以后的阶段形成的小型的渗透阶层的使矿物化的细叶脉的硫化物的 Pb 同位素组成与在层状乐队的矿石的硫化物的完全一致,建议这些细叶脉是在变态和迟了的 magmatic 重迭矿化作用罐头的时期期间的层状乐队的矿石的本土的重做的产品被排除;(5 ) 角闪岩,其 protolith 是基本火山岩,作为矿石有一样的 Pb 同位素组成,暗示那矿石领先从基本火山作用可能被导出。那么,为 Huogeqi 存款的 ore-formingmaterials 的来源是如同暴烈的巨大的硫化物(VMS ) 的扔。然而,矿体不在火山岩以内直接发生,并且相反,他们躺火山岩,显示出从那些典型 VMS 类型存款的一些差别。 | ZHU Xiaoqing ZHANG Qian HE Yuliang ZHU Chaohui | 2006 | Acta Geologica Sinica(English Edition)2006,80,4: | 5 |
| 18 | Petrogenesis of the Paleoproterozoic Guandishan Granitoids in Shanxi Province:Constraints from Geochemistry and Nd Isotopes显示文摘The Guandishan granitoids consist mainly of various granitoid intrusions with different scales, including the Huijiazhuang intrusion, Shizhuang intrusion and Hengjian intrusion, which were formed between 1906 Ma and 1848 Ma. On the basis of geological and petrological characteristics, these granitoids can be classified into two groups: the earlier gneissic granodiorites and monzogranites, and the later massive leuco-monzogranites. Their geochemical and Nd isotopic features indicate that they could be derived from complicated partial melting of supracrustal rocks with an affinity of continental arc materials, such as sandy shale and pelite, and with garnet, pyroxene, hornblende and plagioclase as residual phases. Biotite, feldspar and other minerals were most likely fractionated during the magma evolution. Their source may have an affinity with continental arcs, and the granitoids could be derived from the main syn-collisional to late-orogenic tectonic environment, which may be related to the final amalgamation between the Eastern and Western continental blocks in the North China Craton. | LIU Chaohui LIU Shuwen LI Qiugen Lü Yongjun K. H. PARK Y. S. SONG | 2006 | Acta Geologica Sinica(English Edition)2006,80,6: | 5 |
| 19 | Publication trends in studies examining radix notoginseng as a treatment for ischemic brain injury显示文摘Acute ischemic stroke has become a major disease burden with high mortality and morbidity rates. There is a lack of evidence-based medicine confirming the efficacy of common treatments. Panax notoginseng saponins, the main active ingredient of radix notoginseng, have a neuroprotective role in ischemic brain injury, and have been popularized as a maintenance treatment for acute cerebral infarction and its sequelae. We conducted literature searches on the Web of Science, ClinicalTrials.gov, Cochrane Collaboration, CNKI, Wanfang and the China Scientific & Technological Achievements Database and analyzed the experimental and clinical outcomes of studies investigating the use of radix notoginseng in the treatment of ischemic brain injury to improve the understanding of relevant research trends and existing problems. We found that over the past 10 years, China has maintained its interest in Panax notoginseng research, while such studies are scarce on the Web of Science. However, Chinese researchers often focus on the neuroprotective role of radix notoginseng in ischemic brain injury, but there are no large-scale clinical data to confirm its efficacy and safety. There remains a need for more rigorous large-sample randomized controlled clinical trials with long-term follow-up, to determine whether radix notoginseng lowers stroke recurrence and improves patient's quality of life. | Haiping Li Luo Qiang Chunyang Zhang Chaohui Wang Zhenxing Mu Ligang Jiang | 2014 | Neural Regeneration Research2014,9,17: | 5 |
| 20 | The seasonal variations in the significant wave height and sea surface wind speed of the China's seas显示文摘Long-term variations in a sea surface wind speed(WS) and a significant wave height(SWH) are associated with the global climate change, the prevention and mitigation of natural disasters, and an ocean resource exploitation,and other activities. The seasonal characteristics of the long-term trends in China's seas WS and SWH are determined based on 24 a(1988–2011) cross-calibrated, multi-platform(CCMP) wind data and 24 a hindcast wave data obtained with the WAVEWATCH-III(WW3) wave model forced by CCMP wind data. The results show the following.(1) For the past 24 a, the China's WS and SWH exhibit a significant increasing trend as a whole, of3.38 cm/(s·a) in the WS, 1.3 cm/a in the SWH.(2) As a whole, the increasing trend of the China's seas WS and SWH is strongest in March-April-May(MAM) and December-January-February(DJF), followed by June-July-August(JJA), and smallest in September-October-November(SON).(3) The areal extent of significant increases in the WS was largest in MAM, while the area decreased in JJA and DJF; the smallest area was apparent in SON. In contrast to the WS, almost all of China's seas exhibited a significant increase in SWH in MAM and DJF; the range was slightly smaller in JJA and SON. The WS and SWH in the Bohai Sea, the Yellow Sea, East China Sea, the Tsushima Strait, the Taiwan Strait, the northern South China Sea, the Beibu Gulf, and the Gulf of Thailand exhibited a significant increase in all seasons.(4) The variations in China's seas SWH and WS depended on the season. The areas with a strong increase usually appeared in DJF. | ZHENG Chongwei PAN Jing TAN Yanke GAO Zhansheng RUI Zhenfeng CHEN Chaohui | 2015 | Acta Oceanologica Sinica2015,34,9: | 5 |