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| 1 | Pyrite Surface after ThiobaciUusferrooxidans Leaching at 30℃显示文摘In order to investigate the effect of Thiobacillus ferrooxidans on the oxidation of pyrite, two parallel experiments, which employed H2SO4 solutions and acidic solutions inoculated with Thiobacillus ferrooxidans, were designed and carried out at 30℃. The initial pH of the two solutions was adjusted to 2.5 by dropwise addition of concentrated sulphuric acid. The surfaces of pyrite before exposure to leaching solutions and after exposure to the H2SO4 solutions and acidic solutions inoculated with Thiobacillus ferrooxidans were observed by scanning electron microscopy (SEM). There were a variety of erosion patterns by Thiobacillus ferrooxidans on the bio-leached pyrite surfaces. A conclusion can be drawn that the oxidation of pyrite might have been caused by erosion of the surfaces. Attachment of the bacteria to pyrite surfaces resulted in erosion pits, leading to the oxidation of pyrite. It is possible that the direct mechanism plays the most important role in the oxidation of pyrite. The changes in iron ion concentrations of both the experimental solutions with time suggest that Thiobacillus ferrooxidans can enhance greatly the oxidation of pyrite. | LU Jianjun LU Xiancai WANG Rucheng LI Juan ZHU Changjian GAO Jianfeng | 2006 | Acta Geologica Sinica(English Edition)2006，80，3： | 16 |
| 2 | A comparative study of natural and experimental nano-sized grinding grain textures in rocks显示文摘In three shallow-level fault systems in eastern China, nano-sized (30―100 nm) grinding grain textures are found in the thin-shelled rheological layer representing frictional-viscous high strain field. The surface layer near slipping plane is composed of stacks of grinding grains with high sphericity and uniform nano-sized diameter, while the underlying layer appears as a mixture of irregular ones with diverse diameters. Rock deformation experiments indicate that the grinding grain texture is a common phenomenon in shearing fractures, suggesting a potential transition from sliding friction to rolling one during the rock deformation process. This transition is crucial for many tribological processes in geo- logical fields. | SUN Yan SHU LiangShu LU XianCai LIU Hao ZHANG XiHui K. KOSAKA LIN AiMing | 2008 | Chinese Science Bulletin2008，53，8： | 13 |
| 3 | Anorthite dissolution promoted by bacterial adhesion:Direct evidence from dialytic experiment显示文摘Bacterial adhesion is crucial to the dissolution of minerals and rocks.By employing dialysis method,we designed comparative experiments to investigate the dissolution behavior of anorthite with the mediation of both adhered and non-adhered Paenibacillus polymyxa.The results show that during 10 experimental days,the dissolution of anorthite was promoted considerably by P.polymyxa and metabolites.Nanoscale precipitates were formed in contact experiment.Anorthite has a higher release of Ca and lower releases of Al and Si in dialysis experiment than in contact experiment.The difference implies that the release of Ca is controlled by mechanism of proton-exchange,whereas those of Al and Si are controlled by ligand-complexation in which Al-O-Si bonds are destroyed first.Kinetically the release of Ca is controlled mainly by surface reaction and leached-layer diffusion.Both of them are restrained by adhered bacteria.The releases of Al and Si are controlled mainly by surface reaction,which is accelerated by adhered bacteria. | ZHOU YueFei WANG RuCheng LU XianCai | 2011 | Science China Earth Sciences2011，54，2： | 9 |
| 4 | Recent progress in studies layer in rock on the nano-sized particle shear planes显示文摘Since the 1990s, an ultramicro-particle texture in nano- or micron-sized scale has been continually found in shear planes of various rocks, and recently further progress was made in generic physical mechanisms. In this article, the characteristics of the nano-sized particle layer in rock shear planes (including widespread distribution, layering texture, non-linear genetic mechanism, and multiple functions) on an ultra micro-scale were briefly introduced and more information was obtained by analyzing cases from home and abroad. Our findings suggest that (1) there is a paragenetic relationship between the development of shear frictional- viscous and the formation of nano-sized particles, and (2) in the shear movement, partitioning, segregating, and layering in rocks are initiated by the sliding motion of the nano-sized particle layer. Moreover, the plastic rheology of rocks is essentially the move- ment of ultra-micro-sized particles (nano-size and micro-size), and the nano-sized particle layer in rock shear planes is characterized by some particular physical and chemical effects. | Yan Sun Liangshu Shu Xiancai Lu Hao Liu Xihui Zhang Aiming Lin Kazuo Kosaka | 2008 | Progress in Natural Science:Materials International2008，18，4： | 7 |
| 5 | Discovery of low-mature hydrocarbon in manganese nodules and ooze from the Central Pacific deep sea floor显示文摘Extracts from manganese nodules and ooze from the Central Pacific deep sea floor were analyzed using the chromatogram-mass spectrum, and it was found that most of the biomarker molecules are of the low-mature type (some have characteristics of mature): the ratio of 'A'/C is high between 11.4%-19.75%; CPI is 1.22-1.23; C31-22S/ (22S+22R) hopane is 0.59-0.60, Tm/Ts is 0.99-1.99; pa moretane/(αβ+βα) hopane is 0.12-0.14; C29 sterane 20S/(20S+20R) is 0.35-0.41; ββ/(ββ+αα) is 0.38-0.45; arene TA(I)/TA(I+Ⅱ) is 0.16-0.21; methyl-phenanthrene index (MPI1) is 0.35-0.67. According to the geological settings of the sampling area and its organic geochemical characteristics, it is considered that the hydrothermal activities on the ocean floor facilitate the decomposition of organic matter in the sediment, which leads to the generation and migration of hydrocarbon into manganese nodules and ooze. This discovery is important for understanding the mechanisms of hydrocarbon generation in the ocean floor and | HU Wenxuan JIN Zhijun YAO Suping LU Xiancai CHEN Zhilin ZHANG Linye ZHANG Xuejun ZHOU Huaiyang | 2002 | Chinese Science Bulletin2002，47，11： | 7 |
| 6 | Mineralogical Characteristics of Unusual Black Talc Ores in Guangfeng County, Jiangxi Province, China显示文摘Talc is a hydroxyled, magnesium-rich, layered silicate that has the ideal chemical formula Mg3Si4O10(OH)2. Due to its unique properties, such as softness, chemical inertness, high thermal stability, low electrical conductivity, lamellar habit, adsorption properties, and occurrence of a wide range of particle sizes that can be easily reduced by milling and high specific surface area, talc is widely used in many industries. A stratified deposit of unusual black talc, an occurrence of talc estimated to be more than half a billion tons, was found exposed in the late Neoproterozoic Dengying Formation, located in Guangfeng County, Jiangxi Province, southeastern China. The ores occur primarily as oolitic structures (Fig. 1). The mineralogical and geochemical characteristics of the ores were investigated by using multiple techniques. The ores were found to mainly consist of talc (30%–70%), dolomite, quartz, and magnesite. Most of talc crystals are ultrafine (with an average crystallite size of smaller than 5 μm) and appear as irregular broken or distorted lamellar flakes. The total organic carbon (TOC) content of the black talc ore samples is generally lower than 1.0%. Electron-microprobe analysis (EPMA) revealed low contents of Na, K, Ca and Mn, Fe, Ni, Al in the talc oolitic particles. The talc ores have low contents of toxic elements and relatively high contents of Li and Zn. The infrared spectrum of the black talc is similar to that of white talc from Trimouns (Pyrenees, France), and their Brunauer–Emmett-Teller (BET) specific surface areas, ranging from 15.7 to 23.2 m2/g, is much higher than those of white talc (normally lower than 5.0 m2/g), which may be due to the small size of the talc crystals. | WANG Rucheng LI Chengxiang LU Xiancai ZHANG Ming | 2013 | 矿物学报2013，33，S1： | 6 |
| 7 | Nano-texture of penetrative foliation in metamorphic rocks显示文摘By observing four samples obtained from Jiangxi Province, China, under the scanning electron mi-croscope (SEM), we discovered that nano-particle layers were commonly formed on sliding planes of the penetrative foliation in metamorphic rocks. We also successfully reproduced this phenomenon with a tri-axial pressure experiment. Having gone through the granulitization-alienation-partition in the shear sliding process, the nano-particles (40-95 nm in diameter) display different individual shapes and dis-tinct layered textures. This nano-confinement layer is essentially a frictional-viscous stripe with vis-cous-elastic deformation. In the micro-domain stripe, activities in structural stress field-rheological physical field-geochemical field are very dynamic, corresponding to the three stages (i.e., shear sliding strengthening-weakening-exfoliating) of the foliation development in metamorphism rocks. As such, the viscous-elastic deformation behavior helps shed light on the understanding of the micro-dynamic mechanism of the structural shearing. | SUN Yan LU XianCai ZHANG XiHui LIU Hao LIN AiMing | 2008 | Science China Earth Sciences2008，51，12： | 5 |
| 8 | Boiling process of low temperature formation water in petroleum system, Qaidam Basin显示文摘FOLLOWING the study of Roedder et al., boiling fluid inclusions are identified in oil reservoir ofQaidam Basin. This paper reports the general characteristics of the boiling fluid inclusions, analyzes theconditions for the formation water to boil at low temperature, and discusses the relation between the boiling process and the oil/gas accumulation. 1 General features Boiling fluid inclusions are minute records of the immiscibility process of subterranean hydrothermalfluids, which are generally composed of different types trapped simultaneously. They are observed mostlyin magmatic hydrothermal mineral deposits. In sedimentary basins, the boiling process was only found inMVT. The discovery of boiling fluid inclusions in Qaidam Basin is of great significance to | HU Wenxuan~1, JIN Zhijun~2, QIU Nansheng~2, FU Qi~1, LU Xiancai~1 and SUN Rui~1 1. State Key Laboratory of Mineral Deposit Research, Nanjing University, Nanjing 210093, China 2. Basin and Reservoir Reseach Center, University of Petroleum, Beijing 102200, China | 1999 | Chinese Science Bulletin1999，44，S2： | 5 |
| 9 | Differential efficiencies to neutralize the novel mutants B.1.1.7 and 501Y.V2 by collected sera from convalescent COVID-19 patients and RBD nanoparticle-vaccinated rhesus macaques显示文摘New strains of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)with several dominant mutations in the spike protein have been identified recently,and crucial issues associated with the possible reinfection of recovered patients and the efficiencies of vaccines designed based on epidemic strains in early 2020. | Rong Li Xiancai Ma Jieyi Deng Qier Chen Weiwei Liu Zhilin Peng Yidan Qiao Yingtong Lin Xin He Hui Zhang | 2021 | Cellular & Molecular Immunology2021，18，4： | 4 |
| 10 | Comparison of Present SST Gravity Field Models显示文摘Taking the main land of Europe as the region to be studied, the potential of the new satellite gravity technique: satellite-to-satellite tracking (SST) and improving the accuracy of regional gravity field model with the SST models are investigated. The drawbacks of these models are discussed. With GPM98C as the reference, the gravity anomaly residuals of several other models, the latest SST global gravity field models (EIGEN series and GGM series), were computed and compared. The results of the comparison show that in the selected region, some systematic errors with periodical properties exist in the EIGEN and GGM’s S series models in the high degree and order. Some information that was not shown in the classic gravity models is detected in the low and middle degree and order of EIGEN and GGM’s S series models. At last, the effective maximum degrees and orders of SST models are suggested. | LUO Jia SHI Chuang ZOU Xiancai WANG Haihong | 2006 | Geo-Spatial Information Science2006，9，3： | 2 |
| 11 | Molecular simulation study on K^+-Cl^- ion pair in geological fluids显示文摘This paper reports a classical molecular dynamics study of the potential of mean forces(PMFs),association constants,microstructures K^+-Cl^- ion pair in supercritical fluids.The constrained MD method is used to derive the PMFs of K^+-Cl^- ion pair from 673 to 1273 K in low-density water(0.10-0.60 g/cm).The PMF results show that the contact ion-pair(CIP) state is the one most energetically favored for a K^+-Cl^- ion pair.The association constants of the K^+-Cl^- ion pair are calculated from the PMFs,indicating that the K^+-Cl^- ion pair is thermodynamically stable.It gets more stable as T increases or water density decreases.The microstructures of the K^+-Cl^- ion pair in the CIP and solvent-shared ion-pair states are characterized in detail.Moreover,we explore the structures and stabilities of the KCl-Au(I)/Cu(I) complexes by using quantum mechanical calculations.The results reveal that these complexes can remain stable for T up to1273 K,which indicates that KCl may act as a ligand complexing ore-forming metals in hydrothermal fluids. | Mengjia He Xiandong Liu Xiancai Lu Rucheng Wang | 2017 | Acta Geochimica2017，36，1： | 2 |
| 12 | Material Properties of Marine Hydrogenous Ferromanganese Crust and Its Performance in Desulfurization显示文摘海洋的氢的铁锰合金外壳,一个重要金属资源以后,作为自然 nano-structuredmaterial 的一种类型在各种各样的应用有重要潜力。由采用扫描电子显微镜学,氮吸附解吸附作用等温线测量, X 光检查荧光分光计和 X 光检查衍射方法,微观结构,表面性质和几个像板的铁锰合金外壳的化学成分从西北的太平洋取样了包括地被调查。尽管明显的差别从不同的层被观察,外壳是有高比面积区域,唯一的毛孔结构和丰富的过渡元素的典型多孔的材料。而且,在 desulfurization 过程的自然外壳的性能 preliminarily 在实验室实验被测试。外壳的 Thesulfur 能力分别地在房间温度和 350 deg C 是 13.1% 和 18.1% 。外壳能一个金属资源被用作不仅,而且作为环境材料。 | LU Xiancai HOU Qingfeng LIU Xiandong YANG Kan WANG Rucheng LING Hongfei XU Shijin | 2006 | Acta Geologica Sinica(English Edition)2006，80，3： | 2 |
| 13 | Jurassic rocks,bivalves,and depositional environments of the source area of the Yangtze River,Qinghai Province,western China显示文摘Jurassic rocks are abundantly developed in the source area of the Yangtze River,South Qinghai,with the greatest thickness of 6311 m,including five stratigraphic units:Qoimaco Formation,Buqu Formation,Xiali Formation,Suowa Formation,and Xueshan Formation.Based on sufficient fossils of bivalves,ammonites,and brachiopods,the major part of these formations is ascribed to the Middle Jurassic Bathonian to Callovian.No diagnostic fossils have been found from the Lower Qoimaco Formation or Upper Xueshan Formation,which could possibly contain in part Bajocian and Oxfordian taxa respectively. | YAO HuaZhou ZHANG RenJie DUAN QiFa SHENG XianCai NIU ZhiJun WANG JianXiong ZENG BoFu WU JianHui | 2011 | Science China Earth Sciences2011，54，8： | 2 |
| 14 | Precise orbit determination for GRACE with zero-difference kinematic method显示文摘Thanks to the high performance of the spaceborne GPS receiver and the availability of precise IGS orbit and clock products,zero-difference kinematic precise orbit determination(POD) has been turned out to be a new effective method in orbit determination for the LEO satellites.Zero-difference kinematic POD,which is based on the GPS measurements only from the spaceborne GPS receiver,does not depend on the force models and orbit design.From this point of view,kinematic POD is suitable for the Earth observation satellites at very low altitudes,such as CHAMP,GRACE and GOCE,etc.This paper first reviews the basic zero-difference GPS observation model.Then a modified data quality control scheme is put forward.Finally,a block-wise least squares algorithm,which first separates the parameters into several groups and then solves the parameters by elimination and back-substitution,is discussed and proposed for the kinematic orbit determination.With the above algorithms,we developed kinematic POD software to solve the orbit suitable for one-week GRACE observations.Comparisons with the published Rapid Science Orbit(RSO) indicate that,using our approach to determine the orbit,the accuracy in the radial direction can achieve 3―4 cm for GRACE-A,and 3―5 cm for GRACE-B. | LI JianCheng ZHANG ShouJian ZOU XianCai JIANG WeiPing | 2010 | Chinese Science Bulletin2010，55，7： | 2 |
| 15 | Study on the controllable synthesis of SH-MCM-41 mesoporous materials and their adsorption properties of the La3+, Gd3+and Yb3+显示文摘Sulfhydryl MCM-41(SH-MCM-41) mesoporous materials were prepared via a hydrothermal method,and-SH was successfully imported by a post-grafting method.The structure and surface properties of the materials were characterized using Fourier Transform infrared spectroscopy,X-ray diffraction and Transmission Electron Microscopy analysis.The low concentrations of La^3+,Gd^3+ and Yb^3+ adsorption on the material were investigated.This paper discusses the effects of system factors,such as pH and the solid-liquid ratio,on the performance of the adsorption process.The adsorption thermodynamics and kinetics were also explored.Experimental results indicated that the materials were in good order and had high specific surface area(956 m^2/g) with an average pore diameter of 2.1 nm;the mercapto groups were successfully grafted onto a molecular sieve,and the best grafted amount was 1.46×10^-3 mol/g.The materials showed preferable adsorption of La^3+,Gd^3+ and Yb^3+ with maximum adsorption capacities of560.56 mg/g,467.60 mg/g and 540.68 mg/g,respectively.The adsorption process can be described by the Freundlich isotherm model,and the adsorption data fits pseudo-second-order kinetics.After repeating the elution-regeneration cycle four times,the adsorption capacity of rare earth ions was mostly maintained,indicating that the adsorbent can be regenerated well and recycled to save costs.It has potential in practical application. | Xiancai Li Tianren Lu Ying Wang Yifeng Yang | 2019 | Chinese Chemical Letters2019，30，12： | 2 |
| 16 | Preparation and catalytic performance of superfine Ni/BaTiO3 catalyst 显示文摘 | Luo Laitao Liu Kangqiang | 2003 | Reaction Kinetics and Catalysis Letters2003，80，2： | 1 |
| 17 | Prepa- ration of WO3-SBA-15 Mesoporous Molecular Sieve and Its Performance as an Oxidative Desulfurization Catalyst 显示文摘 | Li Xiancai Huang Shaoxiang Xu Qingrong | 2009 | Transition Met Chem2009，34，8： | 1 |
| 18 | Studies on nickelbased catalysts for carbon dioxide reforming of methane显示文摘 | Wu Min Lai Zhihua | 2005 | Applied Catalysis A:Gerenal2005，290，12： | 1 |
| 19 | The surface fractal investigation on the carbon nanotubes modified by the adsorption of PAA显示文摘 | Hou Qingfeng Lu Xiancai Liu Xiandong Hu Baixing Shen Jian | 2005 | Surface and Coating Technology2005，190，23： | 1 |
| 20 | Preparation of WO3-SBA-15 mesoporous molecular sieve and its performance as an oxidative desulfurization catalyst显示文摘 | Xiancai Li Shaoxiang Huang Qingrong Xu Yifeng Yang | 2009 | Transition Metal Chemistry2009，，8： | 1 |
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