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| 1 | Origin and evolution of oilfield brines from Tertiary strata in western Qaidam Basin:Constraints from ^(87)Sr/^(86)Sr,δD,δ^(18)O,δ^(34)S and water chemistry显示文摘Chemistry of major and minor elements,87Sr/86Sr,δD,δ18O and δ34S of brines were measured from Tertiary strata and Quaternary salt lakes in the western Qaidam Basin.The water chemistry data show that all oilfield brines are CaCl2 type.They were enriched in Ca2+,B3+,Li+,Sr2+,Br-,and were depleted in Mg2+,SO42-,which indicated that these brines had the characteristics of deeply circulated water.The relationship between δD and δ18O shows that all data of these brines decline towards the Global Meteoric Water Line(GWL) and Qaidam Meteoric Water Line(QWL),and that the intersection between oilfield brines and Meteoric Water Lines was close to the local spring and fresh water in the piedmont in the western Qaidam Basin.The results suggest that oilfield brines has initially originated from meteoric water,and then might be affected by water-rock metamorphose,because most oilfield brines distribute in the range of metamorphosing water.The 87Sr/86Sr values of most oilfield brines range from 0.71121 to 0.71194,and was less than that in salt lake water(>0.712),but close to that of halite in the study area.These imply that salt dissolution occurred in the process of migration.In addition,all oilfield brines have obviously much positive δ34S values(ranging from 26.46‰ to 54.57‰) than that of salt lake brines,which was caused by bacterial sulfate reduction resulting in positive shift of δ34S value and depleteed SO42-in oilfield brines.Combined with water chemical data and δD,δ18O,87Sr/86Sr,δ34S values,we concluded that oilfield brines mainly originate from the deeply circulated meteoric waters,and then are affected by salt dissolution,water-rock metamorphose,sulfate reduction and dolomitization during the process of migration.These processes alter the chemical compositions of oilfield brines and accumulate rich elements(such as B,Li,Sr,Br,K and so on) for sustainable utilization of salt lake resources in the Qaidam Basin. | FAN Qishun MA Haizhou LAI Zhongping TAN Hongbing LI Tingwei | 2010 | Chinese Journal Of Geochemistry2010,29,4: | 10 |
| 2 | Emerging low-nuclearity supported metal catalysts with atomic level precision for efficient heterogeneous catalysis显示文摘Supported atomically dispersed metal catalysts(ADMCs)have received enormous attention due to their high atom utilization efficiency,mass activity and excellent selectivity.Single-atom site catalysts(SACs)with monometal-center as the quintessential ADMCs have been extensively studied in the catalysis-related fields.Beyond SACs,novel atomically dispersed metal catalysts(NADMCs)with flexible active sites featuring two or more catalytically centers including dual-atom and triple-atom catalysts have drawn ever-increasing attention recently.Owing to the presence of multiple neighboring active sites,NADMCs could exhibit much higher activity and selectivity compared with SACs,especially in those complicated reactions with multi-step intermediates.This review comprehensively outlines the recent exciting advances on the NADMCs with emphasis on the deeper understanding of the synergistic interactions among multiple metal atoms and underlying structure-performance relationships.It starts with the systematical introduction of principal synthetic approaches for NADMCs highlighting the key issues of each fabrication method including the atomically precise control in the design of metal nuclearity,and then the state-of-the-art characterizations for identifying and monitoring the atomic structure of NADMCs are explored.Thereafter,the recent development of NADMCs in energy-related applications is systematically discussed.Finally,we provide some new insights into the remaining challenges and opportunities for the development of NADMCs. | Xiaobo Zheng Beibei Li Qishun Wang Dingsheng Wang Yadong Li | 2022 | Nano Research2022,15,9: | 9 |
| 3 | Construction of trace silver modified core@shell structured Pt-Ni nanoframe@CeO2 for semihydrogenation of phenylacetylene显示文摘The Pt-Ni nanoframe catalysts have attracted great interest owing to their unique electronic structure and excellent catalytic performance. However, the stability of the tenu ous edges of nano frame-structures is dissatisfactory and their un iversal applicati ons in catalytic market beyond electrocatalytic reactions are yet to be tapped and explored. Herein, we developed a new core@ shell structured Pt-Ni nanoframe@CeO2 (Pt-Ni NF@CeO2) composite via etching the Ni from inhomogeneous Pt-Ni rhombic dodecahedra (Pt-Ni RD) by cerium(lll) acetate hydrate (Ce(OAc)3). In this path, Pt-Ni RD was used as self-sacrificial 怕mplate, while the Ce(OAc)3 serves as the provider of the Ce3* source and OH' for the formation of CeO2 shell, etchant of Pt-Ni RD, and the surface modification agent. By this way, the etching of Pt-Ni RD and the formation of the CeO2 shell are simultaneously proceeded to form the final Pt-Ni NF@CeO2 in one step. The obtained Pt-Ni NF@CeO2 exhibits strong in terfacial charge tran sfer interactio n betwee n Pt-Ni NF core and CeO2 shell eve n without reductio n treatment, leading to enhan ced catalytic activity in the hydrogenation of phenylacetylene. After introduction of trace silver, the Pt-Ni-Ag4.9 NF@CeO2 achieves remarkable catalytic performa nee for the selective con versi on of phe ny lacetyle ne to styrene: high con version (100%), styre ne selectivity (86.5%), and good stability. It reveals that enc apsulatio n n oble metal nano frames into metal oxide to form core @ shell structured hybrids will in deed enhance their stability and catalytic properties. Particularly, this work expends the application of noble metal nanoframes materials to hydrogenation reacti ons. | Yan Long Jian Li Lanlan Wu Qishun Wang Yu Liu Xiao Wang Shuyan Song Hongjie Zhang | 2019 | Nano Research2019,12,4: | 3 |
| 4 | Origin and circulation of saline springs in the Kuqa Basin of the Tarim Basin,Northwest China显示文摘It is widely accepted that hydrogeochemistry of saline springs is extremely important to understand the water circulation and evolution of saline basins and to evaluate the potential of potassium-rich evaporites.The Kuqa Basin,located in the northern part of the Tarim Basin in Northwest China,is a saline basin regarded as the most potential potash-seeking area.However,the origin and water circulation processes of saline springs have yet to be fully characterized in this saline basin.In this study,a total of 30 saline spring samples and 11 river water samples were collected from the Qiulitage Structural Belt(QSB)of the Kuqa Basin.They were analyzed for major(K^+,Ca2^+,Na^+,Mg2^+,SO42-,Cl-and HCO3-)and trace(Sr2^+and Br-)ion concentrations,stable H-O-Sr isotopes and tritium concentrations in combination with previously published hydrogeochemical and isotopic(H-O)data in the same area.It is found that the water chemical type of saline springs in the study area belonged to the Na-Cl type,and that of river water belonged to the Ca-Mg-HCO3-SO4 type.The total dissolved solid(TDS)of saline springs in the QSB ranged from 117.77 to 314.92 g/L,reaching the brine level.On the basis of the general chemical compositions and the characteristics of the stable H-O-Sr isotopes of saline springs,we infer that those saline springs mainly originated from precipitation following river water recharging.In addition,we found that saline springs were not formed by evapo-concentration because it is unlikely that the high chloride concentration of saline springs resulted in evapo-concentration and high salinity.Therefore,we conclude that saline spring water may have experienced intense evapo-concentration before dissolving the salty minerals or after returning to the surface.The results show that the origin of salinity was mainly dominated by dissolving salty minerals due to the river water and/or precipitation that passed through the halite-rich stratum.Moreover,there are two possible origins of saline springs in the QSB:one is the infiltration of the meteoric water(river water),which then circulates deep into the earth,wherein it dissolves salty minerals,travels along the fault and returns to the surface;another is the mixture of formation water,or the mixture of seawater or marine evaporate sources and its subsequent discharge to the surface under fault conditions.Our findings provide new insight into the possible saltwater circulation and evolution of saline basins in the Tarim Basin. | SHAN Junjie WANG Jianping SHAN Fashou TENG Xueming FAN Qishun LIQingkuan QIN Zhanjie ZHANG Xiangru | 2020 | Journal of Arid Land2020,12,2: | 2 |
| 5 | ANALYSIS ON THE SENSITIVITY OF THE FLUVIAL PROCESS IN ALLUVIAL RIVER显示文摘ANALYSISONTHESENSITIVITYOFTHEFLUVIALPROCESSINALLUVIALRIVER¥CAOWcnhongandZHANGQishun(ResearchEngineer,InstituteofWaterConserva... | CAO Wcnhong and ZHANG Qishun(Research Engineer, Institute of Water Conservancy and Hydroelectric Power Research, Beijing,100044, China)( Institute of Water Conservancy and Hydroelectric Power Research, Beijing, 100044,China) | 1994 | International Journal of Sediment Research1994,9,3: | 2 |
| 6 | Angle-Resolved Plasmonic Properties of Single Gold Nanorod Dimers显示文摘Through wet-chemical assembly methods, gold nanorods were placed close to each other and formed a dimer with a gap distance *1 nm, and hence degenerated plasmonic dipole modes of individual nanorods coupled together to produce hybridized bonding and antibonding resonance modes. Previous studies using a condenser for illumination result in averaged signals over all excitation angles. By exciting an individual dimer obliquely at different angles, we demonstrate that these two new resonance modes are highly tunable and sensitive to the angle between the excitation polarization and the dimer orientation, which follows cos2 u dependence. Moreover, for dimer structures with various structure angles, the resonance wavelengths as well as the refractive index sensitivities were found independent of the structure angle. Calculated angle-resolved plasmonic properties are in good agreement with the measurements. The assembled nanostructures investigated here are important for fundamental researches as well as potential applications when they are used as building blocks in plasmon-based optical and optoelectronic devices. | Jian Wu Xuxing Lu Qiannan Zhu Junwei Zhao Qishun Shen Li Zhan Weihai Ni | 2014 | Nano-Micro Letters2014,6,4: | 2 |
| 7 | Timing for high lake levels of Qinghai Lake in the Qinghai-Tibetan Plateau since the Last Interglaciation based on quartz OSL dating显示文摘 | XiangJun Liu ZhongPing Lai QiShun Fan Hao Long YongJuan Sun | 2009 | Quaternary Geochronology2009,,2: | 1 |
| 8 | Why SWKB approximation is exact for all SIPs 显示文摘 | Yin Cheng Cao Zhuangqi Shen Qishun | 2010 | Annals of Physics2010,325,3: | 1 |
| 9 | MicroRNAs与癌症显示文摘MicroRNAs (miRNAs) belong to a class of noncoding, regulatory RNAs that are involved in oncogenesis and show remarkable tissue specificity.miRNAs are approximately 22 nt non-coding RNAs, which regulate gene expression in a sequence-specific manner via translational inhibition or messenger RNA (mRNA) degradation, thus affecting various cellular processes.Since the discovery of their fundamental mechanisms of action, the field of miRNAs has opened a new era in the understanding of small noncoding RNAs.Recent evidence has shown that miRNA controls cell growth, apoptosis, and differentiation.Cancer is a complex genetic disease caused by abnormalities in gene structure and expression, moreover, miRNA expression correlates with cancers and could have a crucial function in tumor progression.Bioinformatic data indicate that each miRNA can control hundreds of target genes, but identification of the accurate miRNA targets will be crucial to exploit the emerging knowledge of miRNA contribution to cancer process. | Libo Xiao Zhiping Wu Rui Feng Qishun Zhu Chenwei Gao Yan Chen Chun Hou Yonggui Wu | 2010 | The Chinese-German Journal of Clinical Oncology2010,9,9: | 1 |
| 10 | SEDIMENT CONTROL MEASURES IN SERIOUS SOIL EROSION REGION IN CHINA显示文摘China is one of the most serious soil erosion countries in the world, many harnessing measures have been developed. The sediment control measures include structural and biological engineering, such as check dam systems, level terraces, artificial grassland and forest etc.. Some pilot examples of the integrated measures and their benefits are introduced in this paper. Meanwhile, impacts on the soil erosion due to human activity are also discussed. Finally, some experiences and lessons are given. | CAO Wenhong, Senior Engineer, China Institute of Water Resources and Hydropower Research(IWHR) ZHANG Qishun Professor, China Institute of Water Resources and Hydropower Research(IWHR) PAN Dong Engineer, China International Water and Electric Corp. | 1997 | International Journal of Sediment Research1997,12,3: | 1 |
| 11 | Quantization scheme for arbitrary one-dimensional potential wells 显示文摘 | Zhangqi Cao Qing Liu Qishun Shen | 2001 | Phys Rev A2001,63,5: | 1 |
| 12 | OSL chronology for lacustrine sediments recording high stands of Gahai Lake in Qaidam Basin,northeastern Qinghai-Tibetan Plateau 显示文摘 | FAN Qishun LAI Zhongping LONG Hao | 2010 | Quaternary Geochro-nology2010,5,23: | 1 |
| 13 | Optical ap- proach to angular displacement measurement based on at- tenuated total reflection 显示文摘 | Chen Fan Cao Zhuangqi Shen Qishun | 2005 | Appl Opt2005,44,26: | 1 |
| 14 | Nanoscale c:splacement measurement in a variable-air-gap optical waveguide 显示文摘 | Chen Fan Cao Zhuangqi Shen Qishun | 2006 | Appl Phys Lett2006,88,16: | 1 |
| 15 | ENVIRONMENTAL PROBLEMS ASSOCIATED WITH SEDIMENT DEPOSITION IN GUANTING RESERVOIR显示文摘 | Zhang Qishun Jiang Naisen and Lin Bingnan (P.N. Lin) Research Engineer Institute of Water Conservancy and Hydroelectric Power Research (IWH R) Beijing China. Adviser IWHR Chairman of Advisory Council International Research and Training Center on Er | 1986 | International Journal of Sediment Research1986,,00: | 1 |
| 16 | Wavelength sensing with subpicometer resolution using ultrahigh order modes 显示文摘 | Chen Lin Cao Zhuangqi Shen Qishun | 2007 | J Lightwave Techno12007,25,2: | 1 |
| 17 | Optical ap- proach to angular displacement measurement based on at- tenuated total reflection 显示文摘 | Chen Fan Cao Zhuangqi Shen Qishun | 2005 | Appl Opt2005,44,26: | 1 |
| 18 | STABILIZATION OF THE YELLOW RIVER CHANNEL AND DEVELOPMENT OF THE DELTA显示文摘STABILIZATIONOFTHEYELLOWRIVERCHANNELANDDEVELOPMENTOFTHEDELTAZhaoYinWANG1,QishunZHANG2andShaolingHE3ABSTRACTTheYelowRiverdelta... | Zhao Yin WANG, Qishun ZHANG and Shaoling HEInternational Journal of Sediment ResearchVol. 13, No. 2, June 1998STABILIZATION OF THE YELLOW RIVER CHANNEL AND DEVELOPMENT OF THE DELTAZhao Yin WANG1, Qishun ZHANG2 and Shaoling HE3 | 1998 | International Journal of Sediment Research1998,13,2: | 1 |
| 19 | An assessment and comparison of 230 Th and AMS 14 C ages for lacustrine sediments from Qarhan Salt Lake area in arid western China显示文摘 | QiShun Fan HaiZhou Ma ZhiBang Ma HaiCheng Wei FengQing Han | 2014 | Environmental Earth Sciences2014,,3: | 1 |
| 20 | Quantization schemefor arbitrary one-dimensional potential wells显示文摘 | Cao Zhangqi Liu Qing Shen Qishun | 2001 | Phys Rev A2001,63,54: | 1 |