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| 1 | Carbon and Oxygen Isotopic Compositions: How Lacustrine Environmental Factors Respond in Northwestern and Northeastern China显示文摘Surface lake sediments,28 from Hoh Xil,24 from northeastern China,99 from Lake Bosten,31 from Ulungur and 26 from Heihai were collected to determine δ13C and δ18O values.Considering the impact factors,conductivity,alkalinity,pH,TOC,C/N and carbonate-content in the sediments,Cl,P,S,and metal element ratios of Mg/Ca,Sr/Ca,Fe/Mn of bulk sediments as environmental variables enable evaluation of their influences on δ13C and δ18O using principal component analysis(PCA) method.The closure and residence time of lakes can influence the correlation between δ13C and δ18O.Lake water will change from fresh to brackish with increasing reduction and eutrophication effects.Mg/Ca in the bulk sediment indicates the characteristic of residence time,Sr/Ca and Fe/Mn infer the salinity of lakes.Carbonate formation processes and types can influence the δ13C–δ18O correlation.δ18O will be heavier from Mg-calcite and aragonite formed in a high-salinity water body than calcite formed in freshwater conditions.When carbonate content is less than 30%,there is no relationship with either δ13C or δ18O,and also none between δ13C and δ18O.More than 30%,carbonate content,however,co-varies highly to δ13C and δ18O,and there is also a high correlation between δ13C and δ18O.Vegetation conditions and primary productivity of lakes can influence the characteristics of δ13C and δ18O,and their co-variance.Total organic matter content(TOC) in the sediments is higher with more terrestrial and submerged plants infilling.In northeastern and northwestern China,when organic matter in the lake sediments comes from endogenous floating organisms and algae,the δ13C value is high.δ13C is in the range of 4‰ to 0‰ when organic matter comes mainly from floating organisms(C/N<6);in the range of 4‰ to 8‰ when organic matter comes from diatoms(C/N=6 to 8);and 8‰ to 4‰ when organic matter comes from aquatic and terrestrial plants(C/N>8). | ZHANG Chengjun FAN Rong LI Jun Steffen MISCHKE laise DEMBELE HU Xiaolan | 2013 | Acta Geologica Sinica(English Edition)2013,87,5: | 13 |
| 2 | 青藏高原中部色林错湖泊沉积物色度反映末次冰盛期以来区域古气候演化显示文摘色林错湖位于青藏高原内部,是西藏第一大咸水内陆湖。研究区剖面选自色林错第三湖泊阶地,利用常用气候替代指标色度,结合粒度、碳酸盐含量[CaCO3(%)]、矿物分析和全有机质(TOC)等进行对比分析,同时采用14C测年方法对剖面进行准确的年代划分,初步探讨了末次冰盛期以来色林错湖泊沉积物色度增强机制的差异性。研究表明:a*、b*与中粗粒砂、磁化率具有较好的相关性;亮度L*与CaCO3(%)具较好相关性;因而沉积物色度变化可反应区域古气候变化。同时对湖泊沉积物矿物分析发现,影响色度变化的制色矿物主要是针铁矿,且以还原环境为主。红度a*高值与亮度L*低值对应气候暖湿气候环境,沉积物粒度较粗,碳酸盐含量低,有机质含量高,磁化率较高值;反之,红度a*低值,L*高值,粒度较细,碳酸盐含量高,有机质含量低,磁化率低值,对应干冷气候。在17.4~15.5 cal ka BP阶段,对应干冷的气候特点;在15.5~10.4 cal ka BP阶段,对应温暖湿润的气候;在10.4~5.2 cal ka BP阶段,整体属于温暖湿润的气候特点;其中,在9.7~9.4 cal ka BP和8.75~8.5 cal ka BP为两个重要的冷事件,属于干湿的气候特点;在5.2~1.2 cal ka BP阶段,反映了干冷的气候特征;在4.3~4.0 cal ka BP,3.3~3.0 cal ka BP和2.4~1.75 cal ka BP,反映了干旱温暖的气候特点;在1.2 cal ka BP以后,色林错湖湖水迅速下降。 | 杜丁丁 Muhammad Saleem Mughal Dembele Blaise 张成君 | 2019 | 干旱区地理2019,42,3: | 12 |
| 3 | 新疆乌伦古湖表层沉积物元素地球化学行为研究显示文摘利用X-荧光法对新疆乌伦古湖26个表层沉积物样品进行常量和微量元素分析,在样品采集时对采样点的水化学参数pH、电导率、盐度等进行测定.结果表明:乌伦古湖表层沉积物主要组成物质中w(CaO)、w(Al_2O_3)、w(Fe_2O_3)、w(MgC))均与w(SiO_2)之间有较好的相关性,w(K_2O)与w(SiO_2)之间的相关性较差(R^2=0.198),w(Na_2O)与w(SiO_2)之间几乎没有相关性(R^2=0.02).大多数微量元素与细粒沉积物有关,湖泊环境对金属元素的迁移和富集起到重要的控制作用.w(Si)/w(Al)可以用来指示封闭湖泊湖面升降变化,w(Si)/w(Al)越低,代表水体越深、水动力越弱的环境;w(Si)/w(Al)越高,代表水动力较强的环境.w(Fe)/w(Mn)对乌伦古湖泊水体深度指示不明显. | 王彩红 李瑞博 Dembele Blaise 张成君 | 2015 | 兰州大学学报(自然科学版)2015,51,5: | 8 |
| 4 | 峨眉山玄武岩作为长江上游特征源岩对三峡贯通的指示显示文摘峨眉山玄武岩作为长江上游攀西地区广泛分布的岩类,具有形成环境独特、出露面积大、岩石易鉴定的特点,可作为长江三峡贯通物源示踪研究的指示标志.通过对长江中上游阶地和江汉平原周老孔第四纪岩心沉积物中的玄武岩砾石和岩屑(1~2mm)进行研究发现,峨眉山玄武岩砾石在长江上游很常见,在三峡以下很少;玄武岩岩屑在长江上游沉积物中非常普遍,而且在周老孔岩心沉积物中的很多层位都有出现.对玄武岩岩屑基质中的斜长石做了微量元素微区原位分析(LA_ICP_MS),分析表明,在周老孔中含峨眉山玄武岩岩屑的岩心层位最大深度为156m,该层位古地磁年龄约为1.7Ma,此时长江已经形成目.三峡已经贯通. | 杨建 李长安 N'dji dit Jacques Dembele 江华军 | 2014 | 地球科学(中国地质大学学报)2014,39,4: | 6 |
| 5 | The Low Lake-Level Record according to the Selin Co Stratigraphical Basis and Multi-Proxies during the Last Glacial Maximum in the Central Tibetan Plateau显示文摘Objective The lake levels in the eastern and southern Asia are regarded as low lake-level owing to precipitation decreasing based on the records of lake-level fluctuation in the continental interior lakes since the last glacial maximum(LGM)(14C 18±1 kaBP,since 20 kaBP)in the Central Asia.Higher lake-level appeared in the transition belt between western Kunlun Mountain and the central Tibetan Plateau.Furthermore,the highest lake-level | ZHANG Chengjun DEMBELE Blaise ZHANG Wanyi ZHANG Jingya WANG Hansheng E Gang ZHENG Qi | 2018 | Acta Geologica Sinica(English Edition)2018,92,5: | 5 |
| 6 | 大别山南麓阳逻组砾石层砾石形貌学研究显示文摘阳逻组砾石层分布于大别山南麓长江北岸地区,是长江中游地区一个重要的第四纪地层单位。其成因主要有两种观点:一种观点认为阳逻组砾石层为古长江冲积物,后期经过构造抬升而在长江北岸形成阶地;另一种观点认为其为大别山南麓河流冲积扇。砾石层中的砾石形貌记录了砾石的演化历史,对砾石进行形貌学研究可以用来进行古环境重建。文章选取武汉地区黄陂区横店镇、新洲区阳逻镇附近的25个砾石剖面中的2693颗砾石的外形参数进行测量。其中横店14个剖面中1377颗砾石、阳逻11个剖面中1316颗砾石。Zingg分类显示砾石以扁长形为主,砾石层在Sneed-Folk三角图中的主要分布于过渡相和河流相,砾石层中存在的大量片岩。这些特征均指示阳逻组砾石层是的物源区为大别山地区,它是大别山南麓河流形成的冲洪积扇堆积物。 | 王节涛 裴来政 张宏鑫 N'dji dit Jacques DEMBELE | 2021 | 中国地质2021,48,1: | 5 |
| 7 | The Dry-Cold Climate of the Qijia Archeological Civilization in Chankou of the Loess Plateau along the Silk Road Since the Neolithic Period显示文摘Objective Large numbers of archeological relics from the Neolithic period are widely distributed in all tributaries of the Yellow River.The early humans tended to reside along the river valleys,and developed small but characteristically decentralized ancient valley culture.It is universally acknowledged that the agriculture exchange between China and western countries and the moderate climate pushed the Neolithic culture prosperity (Chen et al.,2015;Liu Lian et al.,2016;An Chengbang et al.,2017). | ZHANG Huirong DEMBELE Blaise ZHANG Wanyi ZHANG Jingya MA Yuan ZHANG Chengjun | 2018 | Acta Geologica Sinica(English Edition)2018,92,6: | 4 |
| 8 | 兰州市降尘重金属的来源与生态风险研究显示文摘采用X荧光光谱分析法对兰州市降尘中Cu、Zn、Pb、Ni、Cr、As等元素进行了分析.结果表明:降尘中Cu、Zn、Pb、Ni、Cr、As的平均质量分数分别是74.2、317.7、31.9、44.0、114.7、42.9 mg/kg,均高于兰州市土壤元素背景值,其中As、Zn超标最为突出.利用因子分析法和元素等值线图分析了兰州市降尘重金属的来源,结果表明:Cr是自然来源,无污染;Ni主要是工业与自然的混合来源;As来源于燃煤;Pb可能主要来源于含铅土壤的再悬浮;Cu、Zn主要来源于机动车辆.利用地积累指数法和潜在生态风险指数法对兰州市降尘中各元素进行评价.地积累指数法评价结果显示Zn、As属于偏中度污染,Cu、Pb、Ni为轻度污染,Cr无实际污染.潜在生态风险指数法评价结果显示除个别地区As元素达到较高生态危害外,其他元素都属于轻度潜在生态危害. | 方文稳 张丽 Dembele Blaise 张慧荣 李瑞博 张成君 | 2016 | 兰州大学学报(自然科学版)2016,52,1: | 3 |
| 9 | Detrital apatite fission track constraints on Cenozoic tectonic evolution of the northeastern Qinghai-Tibet Plateau, China: Evidence from Cenozoic strata in Lulehe section, Northern Qaidam Basin显示文摘The Northern Qaidam Basin is located at the northeastern part of the Qinghai-Tibetan Plateau. It contains very thick Cenozoic terrestrial clastic sediments, which records the formation of the northern Qaidam Basin due to compressional deformation during the Indo-Asian collision. In this paper, we used detrital apatite fission-track thermochronology, including 4 sandstones and 2 conglomerates samples from the Lulehe section, to reveal the Cenozoic evolution of the northern Qaidam Basin. Fission-track dating indicated the source region of the Lulehe section has experiencedimportant cooling and uplifting in the Late Cretaceous(at ~85.1 Ma and ~65 Ma) and the Eocene(~52 Ma), respectively. The AFT age distribution on the section suggested that the provenance of Lulehe section sediments were mainly derived from the south Qilian Shan(Qilian Mountains) and Altun Shan(Altun Mountains), and two significantly provenance changes may occur at 43.4-46.1 Ma and ~37.8 Ma, respectively. The results may have strong constrains on the Cenozoic deformation and tectonic evolution of the northern Qaidam Basin and Qinghai-Tibet Plateau. | DU Ding-ding ZHANG Cheng-jun MUGHAL Muhammad Saleem WANG Xiao-yu BLAISE Dembele GAO Jun-ping MA Yuan LUO Xin-rong | 2018 | Journal of Mountain Science2018,15,3: | 2 |
| 10 | 地文期-构造节律-气候旋回耦合与三峡地质灾害关系的探讨显示文摘构造-地貌-气候耦合是现代地球系统科学研究的热点之一。大量地质事实表明,构造、地貌、气候与地质灾害的发生密切相关,而三者的阶段性耦合,即地文期-构造节律-气候旋回耦合,在很大程度上决定了地质灾害在时间分布上的群发和空间上的群集。从地文期-构造节律-气候旋回的关系及耦合作用的分析入手,通过地文期、构造节律、气候旋回与地质灾害的关系论述,建立了地文期、构造节律、气候旋回与地质灾害的耦合关系模式。依据现有资料,对三峡地区滑坡的群(高)发与地文期、构造、气候的耦合关系进行了初步分析,并就如何加强这方面的研究进行了讨论。 | 李长安 邵磊 袁胜元 Jacques Dembele | 2012 | 地质科技情报2012,31,5: | 2 |
| 11 | 超大直径异型调压井开挖施工和稳定控制技术显示文摘赞比亚下凯富峡水电站调压井设计为圆形+扇形结构的异形断面,最大开挖跨度62.42 m,具有断面面积大、结构复杂等特点,开挖施工和稳定控制难度大。根据有限元分析,提出了井口预固结灌浆和井口混凝土锁口加固措施,大井扩挖采取浅层开挖、随层支护的方法,在平面环向和立面纵向上钻爆、出渣、支护工序无缝衔接,实现了围岩及时支护加固,保证了调压井的成型精度和开挖施工过程中的稳定和安全。 | Molobaly Dit Mahamadou DEMBELE 姚强 吴钰 王千 陈星艮 李洪涛 | 2023 | 四川水力发电2023,42,2: | 1 |
| 12 | Are patients who present spontaneously with PTB symptoms to the health services in Burkina Faso well managed? 显示文摘 | Dembele SM Ouedraogo HZ Combary AI Sondo B Macq J Dujardin B | 2006 | Int J Tuberc Lung Dis2006,10,4: | 1 |
| 13 | The effect of pressure boundary rupture rate on spontaneous ignition of pressurised hydrogen release,显示文摘 | XU B P WEN J X DEMBELE S | 2008 | Journal of Loss Prevention in the Process Industries2008,22,3: | 1 |
| 14 | Comparison study of the effects of different crude green tea polyphenols on the quality of dried catfish during ambient storage显示文摘 | Dembele S Wang D F Sun J P | 2011 | Journal of Food Process Engineering2011,34,: | 1 |
| 15 | Filariasis attenuates anemia and proinflammatory responses associated with clinical malaria:a matched prospective study in children and young adults显示文摘 | Dolo H Coulibaly YI Dembele B | 2012 | PLoS Negl Trop Dis2012,6,11: | 1 |
| 16 | Fuzzy C-meansmethod for clustering microarray data显示文摘 | Dembele D Kastner P | 2003 | Bioinformatics2003,19,8: | 1 |
| 17 | Fuzzy c-means method for clustering microarray data显示文摘 | Dembele D Kastner P | 2003 | Bioinformatics2003,19,8: | 1 |
| 18 | Investigation of Glazing Behavior in a Fire Environment Using a Spectral Discrete Ordinates Method for Radiative HeatTransfer 显示文摘 | Dembele S Rosario R A F Wen J X | 2007 | Numerical Heat Transfer Part B2007,52,: | 1 |
| 19 | Fuzzy C-means method for clustering microarray data显示文摘 | Dembele D Kastner P | 2003 | Bioinformatics2003,19,8: | 1 |
| 20 | Large Eddy Simulation of the Backdraft Phenonmenon显示文摘 | FERRARIS S A WEN J X DEMBELE S | 2008 | Fire Safety Journal2008,43,3: | 1 |