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| 1 | Strontium and boron isotopic constraint on the marine origin of the Khammuane potash deposits in southeastern Laos显示文摘Since 2006,we have conducted a geological exploration of the Khammuane area in southeastern Laos.Several thick sequences of potash deposits containing sylvite and carnallite were discovered from drilling Paleocene strata of the Thangon Formation(E1tg).To constrain the origin of the brine that formed thick sequences of salt mineral deposits,we measured the strontium and boron isotope composition of some salt minerals in the potash deposit.Boron isotope composition of halite-and potash-associated minerals in the Khammuane potash deposit varied from 19.91%to 31.01‰,which differs significantly from continental evaporates(-6.83‰--5.79‰)but is very close to that of salts precipitated from evapo-concentrated seawater(10‰-36‰).The 87Sr/86Sr ratios(0.707542 to 0.709461)of salts were also close to the values of Paleocene seawater(0.70772 to 0.707830).The content of Br-(0.01%-0.25%)and Br×103/Cl ratios(0.10-0.52)of halite were>10 times higher than that of common continental salts.These characteristics indicate clearly that the Laos potash deposits were deposited from seawater.The small variation in boron and strontium isotopes in all salt sedimentary sequences(gypsum-halite-potash-halite)also suggests that the recharge source should be stable and the effects of other continental water mixing are negligible.Large-scale potash deposits are commonly precipitated from seawater.Hence,the results of recent regional drilling work and geochemical research suggest extensive potash resources could occur in the Thangon Formation of southeastern Laos. | TAN HongBing MA HaiZhou LI BinKai ZHANG XiYing XIAO YingKai | 2010 | Chinese Science Bulletin2010，55，27： | 37 |
| 2 | Typical Geochemical Elements in Loess Deposit in the Northeastern Tibetan Plateau and Its Paleoclimatic Implication显示文摘Widespread and thick loess deposit in the northeastern Tibetan Plateau records paleoclimatic changes over the Quaternary period. In this study, we investigate a loess section located in a high terrace of the Huangshui River in the Xining Basin, and collect samples at 20-cm intervals by digging a well of 16-m depth (including paleosol S1 and S0 and several loess interlayers over the last glacial-interglacial cycle and the Holocene). Concentration of some active elements (Sr and Ca) and inert elements (Rb, Zr, Ti) in these loess samples are measured. The results show that ratios of those elements (oxide), such as Rb/Sr, Ti/Sr, and Zr/CaO ratios, would indicate sensitively paleoclimatic changes, especially the history of precipitation over the last glacial-interglacial and the Holocene. Moreover, the curves of Rb/Sr, Ti/Sr, and Zr/CaO ratios had almost the same variable trends from the bottom to the top and also closely correlated with values of magnetic susceptibility and the global marine δ18O record. But compared with the curves of magnetic susceptibility, the changes of ratios of these elements (oxide) are clearer and easy to understand. Therefore, the ratios of these typical chemical elements in the loess deposit may be used as an excellent index to investigate the history of paleoclimate, particularly precipitation changes in the northeastern Tibetan Plateau. | TAN Hongbing MA Haizhou ZHANG Xiying LU Huayu WANG Jianguo | 2006 | Acta Geologica Sinica(English Edition)2006，80，1： | 10 |
| 3 | 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 |
| 4 | Stable isotope fractionation of chlorine during evaporation of brine from a saline lake显示文摘Brine from the saline Qarhan Lake was evaporated at 28±2°C in a clean environment.Two groups of experiments were conducted;one with complete separation of precipitate and brine at different stages of evaporation,and the other with continuous precipitation during the evaporation.Seventy-nine precipitate and brine samples were collected during the experiments,and the δ37 Cl values were determined using an improved thermal ionization mass spectrometry procedure for precise measurement of chlorine isotopes based on Cs2Cl+ ions.Based on the concentrations of Na+,K+,and Mg2+,evaporation was divided into three main precipitation stages as follows:halite dominant,carnallite dominant,and bischofite dominant.The δ37 Clsolid and δ37 Clliquid values of the precipitate and coexisting brine samples at different stages showed the following characteristics.The precipitates were enriched with 37 Cl relative to the coexisting brine samples,and the δ37 Cl of both the precipitate and brine samples decreased gradually during evaporation.The fractionation factors(αh) between halite and brine were the highest,followed by that(αc) between carnallite and brine,and then that(αb) between bischofite and brine.The αc and αb values of less than one,which indicate the precipitate is enriched in 35 Cl,were found when the evaporation process entered a new stage.However,the δ37 Cl values of carnallite,bischofite,and the coexisting brine samples decreased during evaporation.The residual brine is a 35 Cl reservoir.The experimental phenomena were consistent with the δ37 Cl values in saline deposits in the literature.δ37 Cl can be used as an indicator of brine evaporation processes,which is important in the exploration of sylvinite deposits. | LUO ChongGuang XIAO YingKai MA HaiZhou MA YunQi ZHANG YanLing HE MaoYong | 2012 | Chinese Science Bulletin2012，57，15： | 6 |
| 5 | Seasonal Interaction of River Water-Groundwater-Salt Lake Brine and Its Influence on Water-Salt Balance in the Nalenggele River Catchment in Qaidam Basin,NW China显示文摘Identifying interactions among river water,groundwater and salt lake brine is important for sustainable exploitation of brine mineral resources.In this study,we investigated the water exchange rate in dry and wet seasons,and assessed the influence of seasonal water exchange on brine concentration and crystallization process in the Nalenggele(NLGL)catchment of Qaidam Basin,China.The results show that the surface water infiltration and groundwater recharge rates in the wet season were 2.81×10^(-3)and 1.15×10^(-3)m^(3)/(s·m)in upstream,1.63×10^(-2)and 1.53×10^(-2)m^(3)/(s·m)in midstream,and 2.83×10^(-4)and 6.82×10^(-5)m^(3)/(s·m)in downstream,respectively;while their counterparts in the dry season were 9.81×10^(-4)and 5.05×10^(-4)m^(3)/(s·m)in upstream,and 8.34×10^(-3)and 7.78×10^(-3)m^(3)/(s·m)in midstream,respectively.The water exchange strongly influenced brine concentration and crystallinzation process,with brine chemistry belonging to 3K_(2)SO_(4)·Na_(2)SO_(4) and KCl types in wet and dry seasons,respectively.The strong water exchange in wet season destroyed the water-salt balance,while the low water exchange rate in dry season facilitated preparation of KCl products. | Jibin Han Jianxin Xu Lei Yi Zheng Chang Jianping Wang Haizhou Ma Baoyun Zhang Hongchen Jiang | 2022 | Journal of Earth Science2022，33，5： | 3 |
| 6 | Sample preparation for isotopic determination of boron in clay sediments显示文摘The procedures of sample preparation for isotopic determination of boron in clay sediments is very cumbersome, by far, there haven't been relevant reports on that. In order to establish an effective method for sample preparation, a series of experiments were carried out. In this paper, boron in clay sediments was extracted with HCl solution and purified by two-step ion exchange method. Extracted HCl solution should be adjusted to alkalescency before passing through the Amberlite IRA 743 resin column due to the fact that Amberlite IRA 743 resin absorbs boron only from alkalescent solution. However, a mass of hydroxides of Al and Fe will be precipitated when the extracted HCl solution becomes alkalescent. Hydroxides of Al and Fe have a strong adsorption capacity for boron, which can cause boron isotope fractionation. To treat precipitated hydroxides of Al and Fe, four procedures, namely direct ion exchange (DRIE), decationizing ion exchange (DCIE), once sedimentation ion exchange (OSIE) and repeated sedimentation ion exchange (RSIE) were used and assessed. The influences of the four procedures on separation and extraction and isotopic composition of boron in experimental solutions and clay sediments were also discussed. According to the results, the DRIE, DCIE and OSIE are improper. The result of sample determination indicates that when extracting boron via RSIE, with the increase of precipitation times, there's an obvious decrease in boron content in the precipitated hydroxides while a sharp increase in recovery of boron and it is favorable for weakening the influence of boron isotope fractionation. But the process of RSIE is time consuming and it may introduce boron. It needs further research to establish a more effective sample preparation method for isotopic deter- mination of boron in clay sediments. | ZHANG Yanling XIAO Yingkai MA Yunqi ZHUGE Qin LIU Zhiqi HE Maoyong LUO Chongguang MA Haizhou | 2013 | Chinese Journal Of Geochemistry2013，32，2： | 2 |
| 7 | The late upper paleolithic occupation of the northern Tibetan Plateau mar- gin 显示文摘 | MADSEN D B MA Haizhou BRANTINGHAM P J | 2006 | Journal of Archaeological Science2006，33，10： | 1 |
| 8 | Microarray gene expression analysis of chemosensitivity for docetaxel,cisplatin and 5-fluorouracil(TPF)combined chemotherapeutic regimen in hypopharyngeal squamous cell carcinoma显示文摘Objective: To screen out a set of candidate genes which could help to determine whether patients with hypopharyngeal squamous cell carcinoma(HSCC) could benefit from docetaxel, cisplatin and 5-fluorouracil(TPF)induction chemotherapy.Methods: Gene-expression profiles in 12 TPF-sensitive patients were compared to 9 resistant controls by microarray analysis. Subsequently, expression levels of potential biomarkers in chemosensitive cell line Fa Du after TPF treatment were observed by quantitative real-time polymerase chain reaction(q RT-PCR).Results: Through microarray analysis, 1,579 differentially expressed genes were identified, of which 815 were up-regulated in TPF chemotherapy-responsive tissues whereas 764 were down-regulated. Gene ontology(GO)analysis suggested these genes participating in physiological processes including transcription and its regulation,cellular signal transduction and metabolic process. Additionally, Kyoto Encyclopedia of Genes and Genomes(KEGG) database revealed that MAPK and Jat/STAT signaling pathways occupied important roles in TPF chemotherapeutic sensitivity. Moreover, in vitro cell culture experiments revealed the expression alternations of IL-6, MAPK14, JUN, CDK5 and CAMK2 A exposed to TPF treatment by q RT-PCR, whilst providing an insight into the mechanism underlying TPF chemotherapeutic response in HSCC.Conclusions: These results provided a battery of genes related to TPF chemotherapeutic sensitivity and might act as molecular targets in HSCC treatment. Moreover, these candidate biomarkers could contribute to HSCC individualized treatment. | Meng Lian Haizhou Wang Jugao Fang Jie Zhai Ru Wang Xixi Shen Yifan Yang Zhihong Ma Honggang Liu | 2017 | Chinese Journal of Cancer Research2017，29，3： | 1 |
| 9 | A vector space modeling approach to spoken language identification 显示文摘 | Li Haizhou Ma Bin Lee C H | 2007 | IEEE Transactions on Audio Speech and Language Processing2007，15，1： | 1 |
| 10 | A vector space modeling approach to spoken language identification 显示文摘 | LI Haizhou MA Bin Lee C H | 2007 | IEEE Transactions on Audio Speech and Language Processing2007，15，1： | 1 |
| 11 | Age constraints on the late Quaternary evolution of Qinghai Lake, Tibetan Plateau显示文摘 | David B. Madsen Ma Haizhou David Rhode P. Jeffrey Brantingham Steven L. Forman | 2007 | Quaternary Research2007，，2： | 1 |
| 12 | A target-oriented phonotactic front end for spoken language recognition 显示文摘 | TONG Rong MA Bin LI Haizhou | 2009 | IEEE Transactions on Audio Speech and Language Processing2009，17，7： | 1 |
| 13 | Origin of Boron in the Gas Hure Salt Lake of Northwestern Qaidam Basin, China: Evidence from Hydrochemistry and Boron Isotopes显示文摘The Gas Hure Salt Lake(GHSL) in the northwestern Qaidam Basin, western China, is rich in boron(B) resources, but its B-resource origin is hardly known. Hydrochemical compositions and B isotope characteristics of different waters were collected around the GHSL, including the river water, stream water, spring water, salt-lake brine, intercrystalline brine, well water, drilling brine, and solar pond brine. The hydrochemical signatures suggest that silicates, carbonates and evaporates are the main B-bearing rocks during the water dynamic. The reservoir estimation of B resources shows that the Kulamulekesay River(KLMR) and the Atekan River(ATKR) contribute annually 18.3 tons and 22.84 tons of B, respectively, with a total amount of 11.72 × 10^(4) tons of B during the past 5.7 ka. In comparison with the known B reservoir(32.96 × 10^(4) tons) in the GHSL, a significant amount of B in the GHSL was probably recharged from deep fluids and sediments around the GHSL. The B concentration and B-enrichment degree are shaped by the evaporation process, which are highly elevated at the carnallite and bischofite stages. | HAN Jibin XU Jianxin Syed Asim HUSSAIN JIANG Hongchen MA Yunqi XU Kai MA Haizhou | 2021 | Acta Geologica Sinica(English Edition)2021，95，2： | 1 |
| 14 | ,The Plateau Monsoon Variation during the Past 130 Kyr Revealed by Loess Deposit at Northeast Qinghai-Tibet(China)显示文摘 | Huayu Lu Xiaoyong Wang Haizhou Ma | 2004 | Global and Planetary Change2004，，： | 1 |
| 15 | Hydrogen, oxygen, helium and strontium isotopic constraints on the formation of oilfield waters in the western Qaidam Basin, China显示文摘 | Hongbing Tan Wenbo Rao Haizhou Ma Jiansheng Chen Tingwei Li | 2010 | Journal of Asian Earth Sciences2010，，2： | 1 |
| 16 | Timing and style of late Quaternary glaciation in northeastern Tibet 显示文摘 | Owen L A Finkel R C Ma Haizhou etal | 2003 | Geo logical Society of America Bulletin2003，115，11： | 1 |
| 17 | A target-oriented phonotactic front-end for spoken language recognition显示文摘 | Rong Tong Bin Ma Haizhou Li | 2009 | IEEE Trans on Audio Speech and Language Processing2009，17，7： | 1 |
| 18 | The plateau monsoon variation during the past 130 kyr revealed by loess deposit at north east Q inghai-Tibet(China)显示文摘 | Lu Huayu Wang Xiaoyong Ma Haizhou | | 0，，3： | 1 |
| 19 | Landform evolution in the middle reach of Yellow River and uplift of the Qinghai-Xizang(Tibetan) Plateau during Late Cenozoic显示文摘 | Li Jijun Fang Xiaomin Ma Haizhou | 1996 | Science in China:Series D1996，26，4： | 1 |
| 20 | 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 |
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