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| 1 | Geomorphologic evidence of phased uplift of the northeastern Qinghai-Tibet Plateau since 14 million years ago显示文摘A typical sequence of fluvial terraces and aeolian deposits overlying these terraces were multidisciplinary investigated. New evidences for uplift process of the northeastern Qinghai-Tibetan Plateau in the past 14 million years were obtained. At least 11 river terraces along Huangshui, the first-class tributary of Yellow River, at the Xining-Huzhu region are identified. While the first one (T1) is classified as an accumulation terrace, the others are all basement river terraces, which consist of the Tertiary sandstone and siltstone bedrock, fluvial gravel and pebbles and the overlying aeolian loess-Red Clay deposit. Samples from the aeolian deposits were examined for paleomagnetic stratigraphic reconstruction (1030 samples), luminescence dating (16 samples), magnetic susceptibility and grain-size distribution (more than 4000 samples). The luminescence dating and stratigraphic correlation suggest that terraces of T11, T10,T8, T7, T3, T2, T1 were formed at 14, 11.3, 1.55, 1.2, 0.15, 0.07 and 0.01 million years ago, respectively. Sedimentological analysis and geomorphological observation indicate that formation and evolution of these terraces were mainly driven by tectonic uplift. Therefore, the terrace sequence provides an ideal geological record of the uplift process of the northeastern Qinghai-Tibet during the past 14 million years, and the timings of the terraces formation are regarded as the timings of tectonic uplift. The significant uplifting events took place at 14, 11.3, 1.2 and 0.15 million years ago, respectively. The fluvial incision at the Xining-Huzhu region is less than 100 m during a period of ~12 million years in the Miocene era (between the T11 and T9), while the Huangshui River had incised 432 m during the past 1.2 million years (from T7 to the present floodplain). The river incision process clearly demonstrates that accelerated rising of the northeastern Qinghai-Tibet Plateau during the late Cenozoic, and provides new evidence of previous thoughts. There was a significant readjustment of the fluvial catchment during 1.55-1.2 million years ago: before this time, the paleoriver flowed to southwest. After this time the Huangshui River flows to southeast. A tectonic movement dominates reorganization of this fluvial system. | LU Huayu1, WANG Xiaoyong1, AN Zhisheng1, MIAO Xiaodong1, ZHU Rixiang3, MA Haizhou2, LI Zhen4, TAN Hongbing2 & WANG Xianyan1 1. State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075 China 2. Qinghai Institute of Salt Lakes, Chinese Academy of Sciences. Xining 810008, China 3. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China 4. Department of Geography, Qinghai Normal University, Xining 810008, China | 2004 | Science China Earth Sciences2004,47,9: | 51 |
| 2 | A statistical model for porous structure of rocks显示文摘The geometric features and the distribution properties of pores in rocks were in- vestigated by means of CT scanning tests of sandstones. The centroidal coordi- nates of pores, the statistic characterristics of pore distance, quantity, size and their probability density functions were formulated in this paper. The Monte Carlo method and the random number generating algorithm were employed to generate two series of random numbers with the desired statistic characteristics and prob- ability density functions upon which the random distribution of pore position, dis- tance and quantity were determined. A three-dimensional porous structural model of sandstone was constructed based on the FLAC3D program and the information of the pore position and distribution that the series of random numbers defined. On the basis of modelling, the Brazil split tests of rock discs were carried out to ex- amine the stress distribution, the pattern of element failure and the inosculation of failed elements. The simulation indicated that the proposed model was consistent with the realistic porous structure of rock in terms of their statistic properties of pores and geometric similarity. The built-up model disclosed the influence of pores on the stress distribution, failure mode of material elements and the inosculation of failed elements. | JU Yang1,2, YANG YongMing1, SONG ZhenDuo3 & XU WenJing4 1 State Key Laboratory of Coal Resources and Safe Mining, China University of Mining & Technology, Beijing 100083, China 2 Department of Mechanical and Manufacturing Engineering, The University of Calgary, 2500 University Drive NW Calgary, AB T2N 1N4, Canada 3 China National Coal Mining Equipment Co. Ltd, Beijing 100011, China 4 Department of Materials and Metallurgy, The University of Utah, Salt Lake City, Utah 84112, USA | 2008 | Science China(Technological Sciences)2008,51,11: | 21 |
| 3 | Characteristics of chlorine isotope distribution and analysis on sylvinite deposit formation based on ancient salt rock in the western Tarim Basin显示文摘During formation of the Tarim Basin, there repetitively happened seawater invasion for it was ever connected with wide Paleo-mediterranean Sea. At the same time, for the applica-tion of tectonic and paleoenvironmental condition, the basin deposits many sequences of thick strata of evaporites, especially in its two largest subbasins of Kuqa in the north and Shaqa in the southwest. Therefore, the western Tarim Basin has been considered to be a favorable location to prospect ancient sylvinite deposit. But it is unfortunate that the Br×103/Cl ratio, as a common geochemical index to uncover clues of sylvinite deposit, is almost invalid to indicate the stage of ancient brine condensation for very low content of bromine in salt rock samples (less than 10?6 commonly) in the western Tarim Basin evaporites. Fortunately, we noticed recently that the val-ues of chlorine isotope (δ 37Cl value) for salt rock samples follow some clear laws from place to place, which in the Shaqa subbasin, all δ 37Cl values of salt rock samples behaved negatively and on the contrary, they all surprisingly showed positive values in the Kuqa subbasin. Based on conclusions of previous research and referring to the ratios of Br×103/Cl for salt rock or brine samples, we proved that the chlorine isotope (δ 37Cl) could be used as an effective index to find ancient sylvinite deposit in those evaporites rock basin with low content of Br element back-ground, such as the Tarim Basin. Thus according to the new index of chlorine isotope, we con-clude that the concentration of ancient brines formed ancient salt rocks is much more concen-trated in the Shaqa subbasin than that in the Kuqa subbasin. Particularly, the δ 37Cl value of salt rock in Kashi depression of the western Shaqa subbasin is greatly negative (1.00‰), which may predicate that the ancient brine has been concentrated to the terminal stage of salt deposit or even the later stage of sylvinite deposit. Then it is possible to find sylvinite-bearing deposits around the western region (periphery of Kashi depression) of the Shaqa subbasin if we carry out more careful exploration in later works. | TAN Hongbing1,2, MA Haizhou1, XIAO Yingkai1, WEI Haizhen1,2, ZHANG Xiying1 & MA Wandong1 1. Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China 2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China | 2005 | Science China Earth Sciences2005,48,11: | 15 |
| 4 | Preliminary examination of electrochemical and spectroscopic features of trithiocarbonate collectors for sulfide mineral flotation显示文摘The redox potentials of xanthate/dixanthogen (dithiocarbonate/di dithiocarbonate, DTC/(DTC) 2) and trithiocarbonate/di trithiocarbonate (TTC/(TTC) 2) couples have been measured for the potassium salts. The spectroscopic characteristics of these sulfide mineral collectors were determined by FTIR and UV analysis. Electrochemically controlled contact angle measurements at a pyrite surface provided the basis to analyze the effect of the functional group ( O CS 2 versus S CS 2) on the hydrophobic surface state. Results from this preliminary examination are discussed with respect to the nature of collector adsorption and the pyrite flotation response. | R. Du Plessis 1, J.D. Miller 1, J.C.Davidtz 2 1. Department of Metallurgical Engineering, University of Utah, Salt Lake City, Utah 84102, USA 2. Department of Materials Science and Metallurgical Engineering, University of Pretoria, Pretoria 0002 | 2000 | 中国有色金属学会会刊:英文版2000,10,S1: | 9 |
| 5 | Boron isotopic fractionation in laboratory inorganic carbonate precipitation:Evidence for the incorpora-tion of B(OH)_3 into carbonate显示文摘A laboratory inorganic carbonate precipitation experiment at high pH of 8.96 to 9.34 was conducted, and the boron isotopic fractionations of the precipitated carbonate were measured. The data show that boron isotopic fractionation factors (αcarb-3) between carbonate and B(OH)3 in seawater range 0.937 and 0.965, with an average value of 0.953. Our results together with those reported by Sanyal and collabo-rators show that the αcarb-3 values between carbonate and B(OH)3 in solution are not constant but are negatively correlated with the pH of seawater. The measured boron isotopic compositions of carbonate precipitation (δ11Bcarb) do not exactly lie on the best-fit theoretical δ 11B4-pH curves and neither do they exactly parallel any theoretical δ 11B4-pH curves. Therefore, it is reasonable to argue that a changeable proportion of B(OH)3 with pH of seawater should also be incorporated into carbonate except for the dominant incorporation of B(OH)4- in carbonate . Hence, in the reconstruction of the paleo-pH of sea-water from boron isotopes in marine biogenic carbonates, the use of theoretical boron isotopic frac-tionation factor (α4-3) between B(OH)4- and B(OH)3 is not suitable. Instead, an empirical equation should be established. | XIAO YingKai1,2, LI HuaLing1,3, LIU WeiGuo4, WANG XiuFang1 & JIANG ShaoYong5 1 Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China 2 State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China 3 Nanjing Institute of Geology and Mineral Resources, Nanjing 210016, China 4 State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China 5 State Key Laboratory for Mineral Deposits Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, China | 2008 | Science China Earth Sciences2008,51,12: | 8 |
| 6 | An unusual isotopic fractionation of boron in synthetic calcium carbonate precipitated from seawater and saline water显示文摘Inorganic calcium carbonate precipitation from natural seawater and saline water at various pH values was carried out experimentally. The results show the clear positive relationships between boron concentration and δ11B of inorganic calcium carbonate with the pH of natural seawater and saline water. However, the variations of boron isotopic fractionation between inorganic calcite and seawater/saline water with pH are inconsistent with the hypothesis that B(OH)4- is the dominant spe-cies incorporated into the biogenic calcite structure. The isotopic fractionation factors α between synthetic calcium carbonate precipitate and parent solutions increase systematically as pH increases, from 0.9884 at pH 7.60 to 1.0072 at pH 8.60 for seawater and from 0.9826 at pH 7.60 to 1.0178 at pH 8.75 for saline water. An unusual boron isotopic fractionation factor of larger than 1 in synthetic calcium carbonate precipitated from seawater/saline water at higher pH is observed, which implies that a substantial amount of the isotopically heavier B(OH)3 species must be incorporated preferentially into synthetic inorganic carbonate. The results propose that the incorporation of B(OH)3 is attributed to the formation of Mg(OH)2 at higher pH of calcifying microenvironment during the synthetic calcium carbonate precipitation. The preliminary experiment of Mg(OH)2 precipitated from artificial seawater shows that heavier 11B is enriched in Mg(OH)2 precipitation, which suggests that isotopically heavier B(OH)3 species incorporated preferentially into Mg(OH)2 precipitation. This result cannot be applied to explain the boron isotopic fractionation of marine bio-carbonate because of the possibility that the unusual environment in this study appears in formation of marine bio-carbonate is infinitesimal. We, however, must pay more attention to this phenomenon observed in this study, which accidentally appears in especially natural environment. | XIAO Yingkai1,2,LI Shizhen1,WEI Haizhen1,SUN Aide1,ZHOU Weijian2 & LIU Weiguo2 1. Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining 810008,China 2. State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,Chinese Academy of Sciences,Xi’an 710075,China | 2006 | Science China Chemistry2006,49,5: | 7 |
| 7 | 盐湖化学与化工现状及发展对策显示文摘盐湖化学与化工现状及发展对策附件盐湖化学与化工现状及发展对策专题组编者按:原中国科学院化学学部第20次学部常委会决定进行(盐湖化学与化工现状及发展对策)的专题调研.为此,成立了以学部委员倪嘉缵先生为专题组长的调研组.经全组同志努力,完成了调研报告,于... | Group Monographic Study(Qinghai Institute of Salt Lakes, Academia Sinica, Xining 810001) | 1994 | 盐湖研究1994,2,4: | 7 |
| 8 | Study on phase diagrams and properties of solutions in ternary systems Li+,K+(Mg2+)/SO42--H2O at 25℃显示文摘Solubilities of ternary systems Li+,K+/SO42--H2O (1) and Li+,Mg2+/SO42-H2O (2) were investigated by isothermal method at 25℃. Physico-chemical properties of solutions, such as density, refractive index, viscosity, conductivity and pH, were determined. Phase diagram of the system (1) consists of three solubility branches and three crystallization fields corresponding to K2SO4, Li2SO4.H2O and LiKSO4. LiKSO4 is an incongruent compound, and its transition point is estimated graphically to be 45.5-46.0℃. No solid solution of LiKSO4 with Li2SO4.H2O was found in the system. The system (2) is a simple eutonic type. Pitzer model of electrolyte solution was used to check the obtained solubilities. Data comparison gives good agreement. Two equations were used to correlate density, refractive index of the solution with its composition. Differences between measured and calculated values are less than 0.6% for density, 0.15% for the latter. | LI,Bing LI, Jun FANG, Chun-Hui WANG, Qing-Zhong SONG, Peng-ShengQinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Qinghai 810008, China | 1995 | Chinese Journal of Chemistry1995,13,2: | 5 |
| 9 | Remote sensing and geographic information systems in the spatial temporal dynamics modeling of infectious diseases显示文摘Similar to species immigration or exotic species invasion,infectious disease transmis-sion is strengthened due to the globalization of human activities. Using schistosomiasis as an exam-ple,we propose a conceptual model simulating the spatio-temporal dynamics of infectious diseases. We base the model on the knowledge of the interrelationship among the source,media,and the hosts of the disease. With the endemics data of schistosomiasis in Xichang,China,we demonstrate that the conceptual model is feasible; we introduce how remote sensing and geographic information systems techniques can be used in support of spatio-temporal modeling; we compare the different effects caused to the entire population when selecting different groups of people for schistosomiasis control. Our work illustrates the importance of such a modeling tool in supporting spatial decisions. Our mod-eling method can be directly applied to such infectious diseases as the plague,lyme disease,and hemorrhagic fever with renal syndrome. The application of remote sensing and geographic informa-tion systems can shed light on the modeling of other infectious disease and invasive species studies. | GONG Peng 1,XU Bing 2 & LIANG Song 1、3 1. State Key Laboratory of Remote Sensing Science,Jointly Sponsored by the Institute of Remote Sensing Applications,Chi-nese Academy of Sciences and Beijing Normal University,Box 9718,Beijing 100101,China 2. Department of Geography,University of Utah,Salt Lake City,UT 84112,USA 3. School of Public Health,University of California,Berkeley,CA 94720,USA | 2006 | Science China(Life Sciences)2006,49,6: | 5 |
| 10 | Plant Ionomics: From Elemental Profiling to Environmental Adaptation显示文摘Ionomics 是一条高产量的元素的介绍途径学习位于矿物质营养素和踪迹元素作文下面的分子的机械学的基础(也作为 ionome 知道) 生活有机体。因为 ionomics 的概念超过 10 年以前首先被介绍,重要进步在控制 ionome 的基因和基因网络的鉴定被取得了。在这更改,我们总结在在最后十年使用 ionomics 途径取得的进步,包括由前面的遗传和自然 ionomic 变化的学习的基因的鉴定。我们进一步在改编讨论 ionomics 的潜在的应用程序到 ionomic 等位基因的生态的函数的调查到环境。 | Xin-Yuan Huang David E. Salt | 2016 | Molecular Plant2016,9,6: | 4 |
| 11 | 增加前肢主动运动对去势大鼠桡、尺骨骨量的影响显示文摘目的 :建立雄性大鼠前肢主动运动模型并观察其对去势雄性大鼠尺、桡骨骨量减少的影响。方法 :建立前肢主动运动取食动物模型并去势以观察尺骨、桡骨部位骨量的影响。6月龄大鼠按体重随机分为 5组。(1 )对照组 ;(2 )假手术组 +正常高度笼 ;(3)双侧睾丸切除组 +正常高度笼 ;(4)假手术组 +模型组 ;(5)双侧睾丸切除组 +模型组。结果 :模型组大鼠的尺、桡骨骨皮质都有显著增加。结论 :大鼠前脚趾掌主动运动对远端尺骨和远端桡骨有良好的作用 ,可有效地防止雄性去势大鼠相应部位的骨量丢失。 | 刘浩宇 姚蔚 WebsterS.S.Jee Rebecca SetterbergRadiobiology Division University of Utah Salt Lake City Utah USA | 2000 | 广东医学院学报2000,18,3: | 2 |
| 12 | Plants, selenium and human health显示文摘 | Danielle R Ellis David E Salt | 2003 | Current Opinion in Plant Biology2003,,3: | 2 |
| 13 | Geochemical simulation of the formation of brine and salt minerals based on Pitzer model in Caka Salt Lake显示文摘The geochemical simulation of the formation of brine and salt minerals based on Pitzer model was made in Caka Salt Lake. The evolution of the mixed surface-water and the mineral sequences were calculated and compared with the hydrochemical compositions of the brine and the salt minerals of the deposit in Caka Salt Lake. The results show that the formation temperature of the lake is between 0℃ and 5℃, which is well identical with other studies. The mixing of salt-karst water with the surface waters, neglected by the former researchers, is very important to the formation of the lake, indicating that the initial waters resulting in the formation of the lake are multi-source. It is the first time to use Pitzer model in China for making geochemical simulation of the formation and evolution of inland salt lake and satisfactory results have been achieved. | LIU Xingqi1, CAI Keqin2 & YU Shengsong3 1. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China 2. China University of Geosciences, Beijing 100083, China 3. Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China | 2004 | Science China Earth Sciences2004,47,8: | 2 |
| 14 | Phytoremediation 显示文摘 | Salted Smith R D Raskin I | 1998 | Annual Rev Plant Phys Plant Mol Bio1998,49,: | 2 |
| 15 | Zinc ligands in the metal hyperaccumulator Thlaspi caerulescens as deter-mined using X-ray absorption spectroscopy显示文摘 | Salt D E Prince R C Backer A J M | 1999 | Environmental Science&Technology1999,33,5: | 1 |
| 16 | Mechanisms of cadmium mobility and accumulation in Indian Mustard 显示文摘 | Salt D E Prince R C Picketing I J | 1995 | Plant Physiol1995,109,: | 1 |
| 17 | Phytoremediation:a novel strategy for the removal of toxic metals from the environment using plants显示文摘 | Salt D E | 1995 | Biotechnology1995,13,: | 1 |
| 18 | Dominance of △5-sterols in eight species of the Caetaceae 显示文摘 | Salt Thomas A Tocker Joel E Adler John H | 1987 | Phytochemistry1987,26,3: | 1 |
| 19 | Phytoremediation显示文摘 | Salt D E Smith R D Raskin I | 1998 | Annual Review of Plant Physiology and Plant Molecular Biology1998,49,: | 1 |
| 20 | Phytoremediation:anovel strategy for the removal of toxic metals from the environment using plants显示文摘 | SALT D E BLAYLOCK M KUMAR N P B A | 1995 | Nature Biotechnology1995,13,5: | 1 |