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| 1 | ASTER数据在浅覆盖区蚀变遥感异常信息提取中的应用-以新疆西准噶尔包古图斑岩铜矿岩体为例显示文摘遥感卫星的多光谱数据应用于找矿已取得显著成效,2004年7月中国卫星地面站开始提供ASTER(Advanced Space-borne Thermal Emission and Reflection Radiometer,高级星载热发射反照辐射计)数据,因涵盖波长范围宽[VNIR(Visible and Near Infra-red)、SWIR(Short wave-length Infra-red)、TIR(Thermal Infra-red)]、波段多(14个波段)、性价比合理等因素,ASTER数据的研究迅速发展。长久以来,对覆盖区进行蚀变遥感异常信息提取一直是遥感找矿的关注点之一。笔者等利用ASTER数据对浅覆盖区——包古图斑岩铜矿的Ⅱ号、Ⅴ号斑岩体进行蚀变遥感异常提取,提取的蚀变异常与野外地质情况吻合性好。分别提取了光谱特征谱带差异明显的2组蚀变矿物的异常信息:第一组是蒙脱石、埃洛石、伊利石与绢云母;第二组是方解石、黑云母与绿泥石。提出了需要进一步工作的异常靶区。 | 耿新霞 杨建民 张玉君 姚佛军 | 2008 | 地质论评2008，54，2： | 81 |
| 2 | Control of atmospheric CO_2 concentrations by 2050: A calculation on the emission rights of different countries显示文摘This paper is to provide quantitative data on some critical issues in anticipation of the forthcoming international negotiations in Denmark on the control of atmospheric CO2 concentrations. Instead of letting only a small number of countries dominate a few controversial dialogues about emissions reductions, a comprehensive global system must be established based on emissions allowances for different countries, to realize the long-term goal of controlling global atmospheric CO2 concentrations. That a system rooted in 'cumulative emissions per capita,' the best conception of the 'common but differentiated responsibilities' principle affirmed by the Kyoto Protocol according to fundamental standards of fairness and justice, was demonstrated. Based on calculations of various countries' cumulative emissions per capita, estimates of their cumulative emissions from 1900 to 2005, and their annual emissions allowances into the future (2006―2050), a 470 ppmv atmospheric CO2 concentration target was set. According to the following four objective indicators―total emissions allowance from 1900 to 2050, actual emissions from 1900 to 2005, emissions levels in 2005, and the average growth rate of emissions from 1996 to 2005―all countries and regions whose population was more than 300000 in 2005 were divided into four main groups: countries with emissions deficits, countries and regions needing to reduce their gross emissions, countries and regions needing to reduce their emissions growth rates, and countries that can maintain the current emissions growth rates. Based on this proposal, most G8 countries by 2005 had already expended their 2050 emissions allowances. The accu-mulated financial value based on emissions has reached more than 5.5 trillion US dollars (20 dollars per ton of CO2). Even if these countries could achieve their ambitious emissions reduction targets in the future, their per capita emissions from 2006 to 2050 would still be much higher than those of developing countries; under such circumstance, these future emissions would create more than 6.3 trillion US dollars in emissions deficits. Because of their low cumulative emissions per capita, most developing countries fall within one of the latter two groups, which means that they have leeway for making emissions decisions in the future. Although China accounts for more than 30% of the total global emissions allowance from 2006 to 2050, its total emissions can be controlled within that allow-ance by no other way than reducing its future emissions growth rates. In the end, nine key issues related to international climate negotiations were briefly addressed. | DING ZhongLi1, DUAN XiaoNan2, GE QuanSheng3 & ZHANG ZhiQiang4 1 Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China 2 The General Office of Chinese Academy of Sciences, Beijing 100864, China 3 Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China 4 The Lanzhou Branch of the National Science Library, the Scientific Information Center for Resources and Environment, Lanzhou 730000, China | 2009 | Science China Earth Sciences2009，52，10： | 50 |
| 3 | Antimony speciation in the environment:Recent advances in understanding the biogeochemical processes and ecological effects显示文摘Antimony(Sb) is a toxic metalloid, and its pollution has become a global environmental problem as a result of its extensive use and corresponding Sb-mining activities. The toxicity and mobility of Sb strongly depend on its chemical speciation. In this review, we summarize the current knowledge on the biogeochemical processes(including emission, distribution,speciation, redox, metabolism and toxicity) that trigger the mobilization and transformation of Sb from pollution sources to the surrounding environment. Natural phenomena such as weathering, biological activity and volcanic activity, together with anthropogenic inputs, are responsible for the emission of Sb into the environment. Sb emitted in the environment can adsorb and undergo redox reactions on organic or inorganic environmental media, thus changing its existing form and exerting toxic effects on the ecosystem. This review is based on a careful and systematic collection of the latest papers during 2010–2017 and our research results, and it illustrates the fate and ecological effects of Sb in the environment. | Mengchang He Ningning Wang Xiaojing Long Chengjun Zhang Congli Ma Qianyun Zhong Aihua Wang Ying Wang Aneesa Pervaiz Jun Shan | 2019 | Journal of Environmental Sciences2019，31，1： | 40 |
| 4 | Ozone source attribution during a severe photochemical smog episode in Beijing,China显示文摘Beijing,the capital of China,frequently suffers from the high levels of ozone in summer.A 3-D regional chemical transport model,the Comprehensive Air Quality Model with extensions(CAMx),has been used to simulate a heavy O3 pollution episode in Beijing during June 26―July 2,2000.Ozone Source Apportionment Technology(OSAT) and Geographic Ozone Assessment Technology(GOAT) were applied to quantify the contributions of the precursor emissions from different regions to O3 concentrations in Beijing,to identify the relative importance of different ways by which regional sources affected the O3 levels in Beijing urban areas,and to investigate the sensitivity of O3 formation to the precursors during the episode.The O3 pollution in Beijing showed a significant spatial distribution with strong regional contribution.The results suggested that the plume originating from Beijing urban areas greatly affected the O3 concentrations at the Dingling site,accounting for 55% of elevated O3 there,while O3 pollution in the Beijing urban areas resulted from both local emissions and those from Tianjin and the south of Hebei Province.Transport of O3 was responsible for about 70% of the regional O3 contribution to Beijing urban areas,while transport of O3 precursors accounted for the remainder.The formation of O3 was limited by volatile organic compounds(VOCs) in the urban areas of Beijing,while being more sensitive to NOx levels in the suburban and more remote areas.Therefore,it is necessary to consider a large number of factors,including impacts of emissions from different regions,the two modes of regional contribution as well as the sensitivity of O3 formation to precursors,in the design of emissions control strategies for O3 reduction in Beijing. | WANG XueSong LI JinLong ZHANG YuanHang XIE ShaoDong TANG XiaoYan | 2009 | Science China Chemistry2009，52，8： | 32 |
| 5 | Clinical Research on Alzheimer's Disease: Progress and Perspectives显示文摘Alzheimer's disease(AD), the most common type of dementia, is becoming a major challenge for global health and social care. However, the current understanding of AD pathogenesis is limited, and no early diagnosis and disease-modifying therapy are currently available. During the past year, significant progress has been made in clinical research on the diagnosis, prevention, and treatment of AD.In this review, we summarize the latest achievements,including diagnostic biomarkers, polygenic hazard score,amyloid and tau PET imaging, clinical trials targeting amyloid-beta(Ab), tau, and neurotransmitters, early intervention, and primary prevention and systemic intervention approaches, and provide novel perspectives for further efforts to understand and cure the disease. | Bin-Lu Sun Wei-Wei Li Chi Zhu Wang-Sheng Jin Fan Zeng Yu-Hui Liu Xian-Le Bu Jie Zhu Xiu-Qing Yao Yan-Jiang Wang | 2018 | Neuroscience Bulletin2018，34，6： | 29 |
| 6 | Current imaging strategies for the evaluation of uterine cervical cancer显示文摘Uterine cervical cancer still remains an important socioeconomic issue because it largely affects women of reproductive age.Prognosis is highly depended on extent of the disease at diagnosis and,therefore,accurate staging is crucial for optimal management.Cervical cancer is clinically staged,according to International Federation of Gynecology and Obstetrics guidelines,but,currently,there is increased use of cross sectional imaging modalities [computed tomography(CT),magnetic resonance imaging(MRI),positron emission tomography-CT(PET-CT)] for the study of important prognostic factors like tumor size,parametrial invasion,endocervical extension,pelvic side wall or adjacent/distal organs involvement and lymph node status.Imaging indications also include cervical cancer follow-up,evaluation of tumor response to treatment and selection of suitable candidates for less radical surgeries like radical trachelectomy for fertility preservation.The preferred imaging method for local cervical cancer evaluation is MRI;CT is equally effective for evaluation of extrauterine spread of the disease.PETCT shows high diagnostic performance for the detection of tumor relapse and metastatic lymph nodes.The aim of this review is to familiarize radiologists with the MRI appearance of cervical carcinoma and to discuss the indications of cross sectional imaging during the course of the disease in patients with cervical carcinoma. | Charis Bourgioti Konstantinos Chatoupis Lia Angela Moulopoulos | 2016 | World Journal of Radiology2016，8，4： | 29 |
| 7 | Green chemistry of chromate cleaner production显示文摘Research topics and methods of green chemistry in chromate production are introduced in this paper . New original green chemical process of the heterogeneous reaction and separation system of liquid phase oxidation of chromite in molten salt of sodium hydroxide-one way separation in high concentration medium-metastable phase separation-carbonate recycle conversion has been developed. The green commercial process for comprehensive utilization of mineral resources-reactant recycle inside the process-zero emission was established . | 张懿 李佐虎 齐涛 王志宽 郑诗礼 | 1999 | Chinese Journal of Chemistry1999，17，3： | 27 |
| 8 | Comparison of Manual and Automatic Methods for Measurement of Methane Emission from Rice Paddy Fields显示文摘I.INTRODUCTIONAbout70%ofatmosphericmethaneisfrombiogenicsources,inwhichricepaddiesandothernaturalwetlandsaremostimportant.Glo... | 郑循华 王明星 王跃思 沈壬兴 李晶 | 1998 | Advances in Atmospheric Sciences1998，15，4： | 26 |
| 9 | Air pollution characteristics and their relationship with emissions and meteorology in the Yangtze River Delta region during 2014–2016显示文摘With rapid economic growth and urbanization, the Yangtze River Delta(YRD) region in China has experienced serious air pollution challenges. In this study, we analyzed the air pollution characteristics and their relationship with emissions and meteorology in the YRD region during 2014–2016. In recent years, the concentrations of all air pollutants, except O3,decreased. Spatially, the PM2.5, PM10, SO2, and CO concentrations were higher in the northern YRD region, and NO2 and O3 were higher in the central YRD region. Based on the number of non-attainment days(i.e., days with air quality index greater than 100), PM2.5 was the largest contributor to air pollution in the YRD region, followed by O3, PM10, and NO2.However, particulate matter pollution has declined gradually, while O3 pollution worsened.Meteorological conditions mainly influenced day-to-day variations in pollutant concentrations. PM2.5 concentration was inversely related to wind speed, while O3 concentration was positively correlated with temperature and negatively correlated with relative humidity.The air quality improvement in recent years was mainly attributed to emission reductions.During 2014–2016, PM2.5, PM10, SO2, NOx, CO, NH3, and volatile organic compound(VOC)emissions in the YRD region were reduced by 26.3%, 29.2%, 32.4%, 8.1%, 15.9%, 4.5%, and0.3%, respectively. Regional transport also contributed to the air pollution. During regional haze periods, pollutants from North China and East China aggravated the pollution in the YRD region. Our findings suggest that emission reduction and regional joint prevention and control helped to improve the air quality in the YRD region. | Tao Ma Fengkui Duan Kebin He Yu Qin Dan Tong Guannan Geng Xuyan Liu Hui Li Shuo Yang Siqi Ye Beiyao Xu Qiang Zhang Yongliang Ma | 2019 | Journal of Environmental Sciences2019，31，9： | 26 |
| 10 | Aggregation-induced emission: a coming-of-age ceremony at the age of eighteen显示文摘Aggregation-induced emission(AIE) has drawn great attention worldwide for its unique optical phenomenon and huge potential applications. Since coined by Ben Zhong Tang et al. in 2001, AIE has been deeply investigated and widely utilized in many important areas, such as organic light-emitting diode(OLED), sensor, and bio-imaging. Herein, we highlight some important progress of AIE in these eighteen years, including the exploration of internal mechanism and potential applications. Furthermore,some other interestingly emissive behaviors, originating but distinguishing from the AIE concept, are presented. It is anticipated an overall understanding about AIE could be easily caught from this short review for scientists, no matter whether they are involved in this exciting and rising research area or not. | Jie Yang Zhenguo Chi Weihong Zhu Ben Zhong Tang Zhen Li | 2019 | Science China Chemistry2019，62，9： | 25 |
| 11 | Rock burst mechanism analysis in an advanced segment of gob-side entry under different dip angles of the seam and prevention technology显示文摘In order to investigate the frequent occurrences of rock burst in gob-side entry during the mining process of the mining zone No. 7, the mechanical model of main roof of fully-mechanized caving mining before breaking was established by the Winkler foundation beam theory, and the stress evolution law of surrounding rock with different dip angles of the seam during the mining process was analyzed by using FLAC3 D. The results show that: with the dip angle changing from 45° to 0°, the solid-coal side of gobside entry begins to form an L-shaped stress concentration zone at a dip angle of 30°, and the stress concentration degree goes to higher and higher levels. However, the stress concentration degree of the coalpillar side goes to lower and lower levels; the influence range and peak stress of the abutment at the lateral strata of adjacent gob increase with dip angle decreasing and reach a maximum value at a dip angle of 0°, but the tailgate is not affected; the abutment pressure superposition of two adjacent gobs leads to stress concentration further enhancing in both sides of gob-side entry. With the influence of strong mining disturbance, rock burst is easily induced by dynamic and static combined load in the advanced segment of gob-side entry. To achieve stability control similar to that in the roadway, the key control strategy is to reinforce surrounding rock and unload both sides. Accordingly, the large-diameter drilling and high-pressure water injection combined unloading and reinforced support cooperative control technology was proposed and applied in field test. The results of Electromagnetic Emission(EME) and field observation showed that unloading and surrounding rock control effect was obvious. | Yang Zengqiang Liu Chang Tang Shichuan Dou Linming Cao Jinglong | 2018 | International Journal of Mining Science and Technology2018，28，6： | 24 |
| 12 | Temperature variation of a thermionic cathode during electron emission显示文摘It is necessary to know the actual temperature of a thermionic cathode that works as the electron source in a microwave tube. It has been found that the temperature of the cathode drops markedly during the thermionic emission. For example, the temperature could fall by about 30oC under a current density of 2.92 A/cm2. Using the molecular thermodynamics, the dependence of the cathode temperature on the emission current density has been obtained. It has been theoretically pointed out that several factors, such as heating model and temperature coefficient of resis-tance of heater, can influence the cathode temperature. These theoretical conclu-sions were supported by the experimental results. | LIU YanWen TIAN Hong HAN Yong XU ZhenYing MENG MingFeng ZHANG HongLai | 2008 | Science China(Technological Sciences)2008，51，9： | 22 |
| 13 | Diagnosis and evaluation of gastric cancer by positron emission tomography显示文摘Gastric cancer is the second leading cause of cancer mortality worldwide.The diagnosis of gastric cancer has been significantly improved with the broad availability of gastrointestinal endoscopy.Effective technologies for accurate staging and quantitative evaluation are still in demand to merit reasonable treatment and better prognosis for the patients presented with advanced disease.Preoperative staging using conventional imaging tools,such as computed tomography(CT)and endoscopic ultrasonography,is inadequate.Positron emission tomography(PET),using 18F-fluorodeoxyglucose(FDG)as a tracer and integrating CT for anatomic localization,holds a promise to detect unsuspected metastasis and has been extensively used in a variety of malignancies.However,the value of FDG PET/CT in diagnosis and evaluation of gastric cancer is still controversial.This article reviews the current literature in diagnosis,staging,response evaluation,and relapse monitoring of gastric cancer,and discusses the current understanding,improvement,and future prospects in this area. | Chen-Xi Wu Zhao-Hui Zhu | 2014 | World Journal of Gastroenterology2014，20，16： | 21 |
| 14 | Imaging of gastroenteropancreatic neuroendocrine tumors显示文摘Imaging of gastroenteropancreatic neuroendocrine tumors can be broadly divided into anatomic and functional techniques.Anatomic imaging determines the local extent of the primary lesion,providing crucial information required for surgical planning.Functional imaging,not only determines the extent of metastatic disease spread,but also provides important information with regard to the biologic behavior of the tumor,allowing clinicians to decide on the most appropriate forms of treatment.We review the current literature on this subject,with emphasis on the strengths of each imaging modality. | Eik Hock Tan Cher Heng Tan | 2011 | World Journal of Clinical Oncology2011，2，1： | 20 |
| 15 | Imaging of multiple myeloma: Current concepts显示文摘Medical imaging is of crucial importance for diagnosis and initial staging as well as for differentiation of multiple myeloma(MM)from other monoclonal plasma cell diseases.Conventional radiography represents the reference standard for diagnosis of MM due to its wide availability and low costs despite its known limitations such as low sensitivity,limited specificity and its inability to detect extraosseous lesions.Besides conventional radiography,newer cross-sectional imaging modalities such as whole-body low-dose computed tomography(CT),whole-body magnetic resonance imaging(MRI)and18F-fluorodeoxyglucose(FDG)positron emission tomography(PET)/CT are available for the diagnosis of osseous and extraosseous manifestations of MM.Whole-body low-dose CT is used increasingly,replacing conventional radiography at selected centers,due to its higher sensitivity for the detection of osseous lesions and its ability to diagnose extraosseous lesions.The highest sensitivity for both detection of bone marrow disease and extraosseous lesions can be achieved with whole-body MRI and18F-FDG PET/CT.According to current evidence,MRI is the most sensitive method for initial staging while18F-FDG PET/CT allows monitoring of treatment of MM.There is an evolving role for assessment of treatment response using newer MR imagingtechniques.Future studies are needed to further define the exact role of the different imaging modalities for individual risk stratification and therapy monitoring. | Thorsten Derlin Peter Bannas | 2014 | World Journal of Orthopedics2014，5，3： | 20 |
| 16 | Methane and nitrous oxide concentration and emission flux of Yangtze Delta plain river net显示文摘Methane (CH4) and nitrous oxide (N2O) saturation concentration and gas-water interface emission flux in surface water of the Yangtze Delta plain river net were investigated in summer at representative sites including the upper reaches of the Huangpu River and the rivers in the Chongming Island. The results show that the CH4 concentration in river water ranged from 0.30±0.03 to 6.66±0.14 μmol.L-1, and N2O concentration ranged from 13.8±2.33 to 435±116 nmol.L-1. River surface water had a very high satura- tion level of CH4 (from 468±49.0% to 11560±235%) and that of N2O (from 175±29.5% to 4914±1304%). Dissolved oxygen (DO) was the primary factor controlling the CH4 concentration in water. N2O concentration had significant negative correlation with salinity and a significant positive correlation with nitrate (NO3-), nitrite (NO2-), chemical oxygen demand (CODcr) concentration and pH of river water. CH4 and N2O of river water were brought about mainly by methanogenesis and denitrification in river bottom sediment that diffused through sediment-water interface into the water body and then into atmosphere through the gas-water interface. The emission flux of CH4 and N2O at river gas-water interface reached 778±59.8 and 236±63.6 μmol.m-2.h-1, respectively in summer. The river net was a potential source of atmospheric CH4 and N2O because of eutrophication of the water body. | WANG DongQi CHEN ZhenLou SUN WeiWei HU BeiBei XU ShiYuan | 2009 | Science China Chemistry2009，52，5： | 19 |
| 17 | Features of infrared thermal image and radiation temperature of coal rocks loaded显示文摘Experimental study discovered that: (i) coal rocks and sandstone in the course of loading have three types of infrared thermal image features and three types of infrared radiation temperature features; (ii) infrared detection is comparable with acoustic emission detection and electrical resistance detection. Generally, the infrared forewarning of coal rocks’ failure comes later than that of acoustic and electrical resistance, but the infrared radiation temperature forewarning of coal burst comes earlier. On the basis of comprehensive study and analysis, it was suggested that stress nearby 0.79 σ c should be taken as the stress-caution-zone for rock mass failure, ground pressure and its disasters monitoring. | 吴立新 王金庄 | 1998 | Science China Earth Sciences1998，41，2： | 19 |
| 18 | On the major proposals for carbon emission reduction and some related issues显示文摘We evaluated and ran simulations for seven proposals for the reduction of global CO2 emissions (e.g.,those of the Intergovernmental Panel on Climate Change (IPCC),United Nations Development Program,and Organization for Economic Cooperation and Development).All the proposals ignored the fact that the cumulative CO2 emissions per capita for developed countries were 7.54 times those for developing countries in the historical period of 1900-2005.These proposals further deliberately allocate 2006-2050 emission quotas to developed countries that are 2.3-6.7 times those to developing countries.This will seriously violate the development rights of developing countries.This paper clearly states that proposals such as that of the IPCC are not suitable references for future international climate change negotiations as they violate the fundamentals of fairness and equity in international relationships and the UNFCCC principle of 'common but differentiated responsibilities'.Comparing estimates of emissions in China in the scenario of rapid development with low-CO2-emission technology in the period 2006-2050 with estimates for other countries and groups,we find that China can logically and morally argue for equivalent emission rights even in the case of the strict CO2 concentration target of 450-470 ppmv. | DING ZhongLi1,DUAN XiaoNan2,GE QuanSheng3 & ZHANG ZhiQiang4 1 CAS Key Lab of Cenozoic Geology and Environment,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China 2 The General Office of Chinese Academy of Sciences,Beijing 100864,China 3 Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China 4 The Lanzhou Branch of the National Science Library,Scientific Information Center for Resources and Environment of CAS,Lanzhou 730000,China | 2010 | Science China Earth Sciences2010，53，2： | 18 |
| 19 | Evaluation of preoperative staging for esophageal squamous cell carcinoma显示文摘Esophageal squamous cell carcinoma(ESCC) is known for its rapid progression and poor outcomes. China has the highest incidence and mortality in the world. Diagnoses made at early stages and accurate staging are associated with better outcomes, all of which can play a significant role in the selection of treatment protocols. ESCC is staged according to the widely accepted TNM system. Common imaging modalities used in staging ESCC before treatment include endoscopy, computed tomography(CT), positron emission tomography(PET) and magnetic resonance imaging(MRI). Endoscopic ultrasound is useful for staging tumor depth and nodal status. Narrow band imaging is valuable for early stage disease assessment. CT and PET provide additional valuable information regarding node and metastasis staging. The ability of MRI to delineate ESCC is continuously being improved and adds information regarding locoregional status to routine examinations. | Lin-Na Luo Long-Jun He Xiao-Yan Gao Xin-Xin Huang Hong-Bo Shan Guang-Yu Luo Yin Li Shi-Yong Lin Guo-Bao Wang Rong Zhang Guo-Liang Xu Jian-Jun Li | 2016 | World Journal of Gastroenterology2016，22，29： | 18 |
| 20 | An emission source inversion model based on satellite data and its application in air quality forecasts显示文摘This paper aims at constructing an emission source inversion model using a variational processing method and adaptive nudging scheme for the Community Multiscale Air Quality Model (CMAQ) based on satellite data to investigate the applicability of high resolution OMI (Ozone Monitoring Instrument) column concentration data for air quality forecasts over the North China. The results show a reasonable consistency and good correlation between the spatial distributions of NO2 from surface and OMI satellite measurements in both winter and summer. Such OMI products may be used to implement integrated variational analysis based on observation data on the ground. With linear and variational corrections made, the spatial distribution of OMI NO2 clearly revealed more localized distributing characteristics of NO2 concentration. With such information, emission sources in the southwest and southeast of North China are found to have greater impacts on air quality in Beijing. When the retrieved emission source inventory based on high-resolution OMI NO2 data was used, the coupled Weather Research Forecasting CMAQ model (WRF-CMAQ) performed significantly better in forecasting NO2 concentration level and its tendency as reflected by the more consistencies between the NO2 concentrations from surface observation and model result. In conclusion, satellite data are particularly important for simulating NO2 concentrations on urban and street-block scale. High-resolution OMI NO2 data are applicable for inversing NOx emission source inventory, assessing the regional pollution status and pollution control strategy, and improving the model forecasting results on urban scale. | CHENG XingHong XU XiangDe DING GuoAn | 2010 | Science China Earth Sciences2010，53，5： | 17 |
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