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| 1 | Re-Os dating of auriferous pyrite from the Zhenyuan super-large gold deposit in Ailaoshan gold belt,Yunnan Province,Southwestern China显示文摘Zhenyuan gold deposit is the largest super large gold deposit in the Ailaoshan gold belt,but its precise mineralization age is still lack.Re-Os isotopic age of the auriferous pyrite from the Zhenyuan gold deposit was determined by using a high-resolution inductively coupled plasma mass spectrometry(HR-ICP-MS).The pyrite samples were decomposed in carius tubes,Os was separated by distillation and Re was extracted by acetone,respectively.The results show that the Re-Os isochron age is 229±38 Ma(MSWD=2.0,confidence level is 95%),with an initial 187 Os/188 Os value of 0.68±0.24 and a corresponding Os value of 442±91.The Re/Os ratios of the pyrite vary from 40.8 to 100.5.The data suggest that at least one important ore-forming event was occurred during Indosinian epoch,and the ore-forming materials probably derived from mixed sources of crustal and mantle,while the later dominated.The Ailaoshan composite orogen experienced complicated evolutional processes,including formation of Precambrian-Early Paleozoic basement,subduction and orogenesis of Late Paleozoic era,collisional orogenesis of Late Hercynian-Indosinain epoch,and extensional or striking orogenesis of Yanshainan-Cenozoic epoch.The polycycle tectonic evolution and magmatism in this area caused multi-stage and superposition metallization characteristics of the Zhenyuan gold deposit:the mineralization probably occur mainly during the Indosinian collisional orogeny,while the minor gold ores of altered granite-porphyry and altered lamprophyre may be formed in the late superposition metallization. | SHI GuiYong SUN XiaoMing PAN WeiJian HU BeiMing QU WenJun DU AnDao LI Chao | 2012 | Chinese Science Bulletin2012，57，35： | 9 |
| 2 | AN IMPROVED MODAL ANALYSIS FOR THREE-DIMENSIONAL PROBLEMS USING FACE-BASED SMOOTHED FINITE ELEMENT METHOD显示文摘In this work, we further extended the face-based smoothed finite element method (FS-FEM) for modal analysis of three-dimensional solids using four-node tetrahedron elements. The FS-FEM is formulated based on the smoothed Galerkin weak form which employs smoothed strains obtained using the gradient smoothing operation on face-based smoothing domains. This strain smoothing operation can provide softening effect to the system stiffness and make the FS-FEM provide more accurate eigenfrequency prediction than the FEM does. Numerical studies have verified this attractive property of FS-FEM as well as its ability and effectiveness on providing reliable eigenfrequency and eigenmode prediction in practical engineering application. | Zhicheng He Guangyao Li Zhihua Zhong Aiguo Cheng Guiyong Zhang Eric Li | 2013 | Acta Mechanica Solida Sinica2013，26，2： | 5 |
| 3 | Rare Earth Elements Composition and Constraint on the Genesis of the Polymetallic Crusts and Nodules in the South China Sea显示文摘The rare earth elements(REE) composition of the polymetallic crusts and nodules obtained from the South China Sea(SCS) were analyzed through inductively coupled plasma mass spectrometry.Results revealed great differences in the REE abundances(∑REE) of the SCS polymetallic crusts and nodules; the crusts show the highest ∑REE, whereas the nodules exhibit the lowest ∑REE. The similarity in their NASC-normalized patterns, the enriched light REE(LREE), the markedly positive Ce anomaly(δCe), and the non-or weakly positive Eu anomaly(δEu), suggest that the polymetallic crusts and nodules are of hydrogenetic origin. Moreover, the REE contents and their relevant parameters are quite different among the various layers of the crusts and nodules, which probably results from the different marginal sea environments and mineral assemblages of the samples. The growth profiles of the SCS polymetallic crusts and nodules reveal the tendency ∑REE and δCe to slightly increase from the outer to the inner layers, suggesting that the growth environments of these samples changed smoothly from an oxidizing to a relatively reducing environment; in addition, the crust ST1 may have experienced a regressive event(sea-level change) during its growth, although the REE composition of the seawater remained relatively stable. On the basis of the regional ∑REE distribution in the SCS crusts and nodules,the samples collected near the northern margin were influenced by terrigenous material more strongly compared with the other samples, and the REE contents are relatively low. Therefore, the special geotectonic environment is a significant factor influencing the abundance of elements, including REE and other trace elements. Compared with the oceanic seamount crusts and deep-sea nodules from other oceans,the SCS polymetallic crusts and nodules exhibit special REE compositions and shale-normalized patterns, implying that the samples are of marginal sea-type Fe-Mn sedimentary deposits, which are strongly affected by the epicontinental environment, and that they grew in a more oxidative seawater environment. This analysis indicates that the oxidized seawater environment and the special nano property of their Fe-Mn minerals enrich the REE adsorption. | GUAN Yao SUN Xiaoming SHI Guiyong JIANG Xiaodong LU Hongfeng | 2017 | Acta Geologica Sinica(English Edition)2017，91，5： | 5 |
| 4 | Magnetostrictive properties and detection efficiency of TbDyFe/FeCo composite materials for nondestructive testing显示文摘In order to develop a highly sensitive material for nondestructive testing(NDT),(Tb_(0.3) Dy_(0.7))Fe_(1.95) thin films were deposited on FeCo substrates at room temperature by magnetron sputtering and annealed.The magnetostrictive properties and the detection efficiency of the composite films were investigated.Results demonstrate that the detection efficiency roughly shows regular consistency with the magnetostrictive strain of the TbDyFe films. Heat treatment has a great effect on the crystalline state and the magnetostrictive strain of the composite materials. The as-deposited(Tb_(0.3) Dy_(0.7))Fe_(1.95) films are amorphous, and the saturation magnetostriction(ls) is only 90 ppm. However, the nanostructured crystalline REFe2 is partially separated out in amorphous matrix after annealing at 600C for 1 h, and the ls increases to 265 ppm. Simultaneously, the detection efficiency of the composite materials is obviously improved compared to that of the as-deposited films. The detection signal of traditional FeCo strip is0.4 V at the excitation power of 1.0 P and frequency of 128 kHz and that of the strip increases significantly by depositing one layer of(Tb_(0.3) Dy_(0.7))Fe_(1.95) film. The detection signal of the composite material annealed at 600C is the best, even reaching saturation value of 2.5 V(1.0 P, 128 kHz). The results may provide us with a method for preparing new materials for NDT. | Liangliang Zhu Kuoshe Li Yang Luo Dunbo Yu Zilong Wang Guiyong Wu Jiajun Xie Zhifeng Tang | 2019 | Journal of Rare Earths2019，37，2： | 3 |
| 5 | Effect of niobium substitution on microstructures and thermal stability of TbCu7-type Sm-Fe-N magnets显示文摘This paper reports crystal structures, magnetic properties and thermal stability of TbCu7-type Sm_(8.5)Fe_((85.8-x)Co_(4.5)Zr_(1.2)Nb_x(x = 0-1.8) melt-spun compounds and their nitrides, investigated by means of X-ray diffraction, vibrating sample magnetometer, flux meter and transmission electron microscope. It is found that the lattice parameter ratio c/a of TbCu_7-type crystal structure increases with Nb substitution, which indicates that the Nb can increase the stability of the metastable phase in the Sm-Fe ribbons. Nb substitution impedes the formation of magnetic soft phase a-Fe in which reversed domains initially form during the magnetization reversal process. Meanwhile, Nb substitution refines grains and leads to homogeneous micro structure with augmented grain boundaries. Thus the exchange coupling pining field is enhanced and irreversible domain wall propagation gets suppressed. As a result, the magnetic properties are improved and the irreversible flux loss of magnets is notably decreased. A maximum value 771.7 kA/m of the intrinsic coercivity H_(cj) is achieved in the 1.2 at% substituted samples.The irreversible flux loss for 2 h exposure at 120 ℃ declines from 8.26% for Nb-free magnets to 6.32% for magnets with 1.2 at% Nb substitution. | Guiyong Wu Hongwei Li Dunbo Yu Kuoshe Li Wenlong Yan Chao Yuan Liang Sun Yang Luo Kun Zhang | 2018 | Journal of Rare Earths2018，36，3： | 2 |
| 6 | Grain-size features of aeolian sand on the east coast of Hainan Island and the revealed evolutionary processes of the sedimentary environment显示文摘The Mudui stratigraphic section represents the typical records of sedimentation processes of sand dunes and interdune depressions on the east coast of Hainan Island.Based on high-density sampling and optically stimulated luminescence(OSL) dating of the strata of the section,the grain-size composition,grain-size parameters,cumulative distribution probability curve,and grain-size-sensitivity indexes(SC/D) were analyzed.The analyzed results show that the grain-size features of aeolian sand,weakly developed sandy paleosol,two-facies(aeolian and aqueous) deposits,and lagoon deposits are all different.This indicates four evolutionary phases of the sedimentary environment of the east coast of Hainan Island since 38 ka B.P.Phase I:38-22 ka B.P.;phase II:22-17 ka B.P.;phase III:17-10 ka B.P.;phase IV:10 ka B.P.-present.The climate experienced the hot-wet/hot-dry,hot-wet/hot-dry,and warm-wet/hot-wet fluctuations,and the sedimentary environment also underwent lagoon deposition,dune and interdune depression deposition,dune stabilization and soil development,shifting sand deposition,and evolutionary processes. | XiaoXia Liao Sen Li GuiYong Wang ZhiLun Li | 2010 | Research in Cold and Arid Regions2010，2，6： | 2 |
| 7 | Fiber-Optic Raman Spectrum Sensor for Fast Diagnosis of Esophageal Cancer显示文摘A fiber-optic Raman spectrum sensor system is used for the fast diagnosis of esophageal cancer during clinical endoscopic examination.The system contains a 785nm exciting laser,a Raman fiber-optic probe with 7 large core fibers and a focus lens,and a highly sensitive spectrum meter.The Raman spectrum of the tissue could be obtained within 1 second by using such a system. A signal baseline removal and denoising technology is used to improve the signal quality.A novel signal feature extraction method for differentiating the normal and esophageal cancer tissues is proposed,based on the differences in half-height width(HHW)in 1200cm^-1 to 1400cm^-1 frequency band and the ratios of the spectral integral energy between 1600cm^-1-1700cm^-1 and 1500cm^-1- 1600cm^-1 band.It shows a high specificity and effectivity for the diagnosis of esophageal cancer. | Jianhua DAI Xiu HE Zhuoyue LI Kang LI Tingting YANG Zengling RAN Lijian YIN Yao CHEN Xiang ZOU Dianchun FANG Guiyong PENG | 2019 | Photonic Sensors2019，9，1： | 2 |
| 8 | Morphodynamic study of reticulate dunes at Southeastern fringe of Tengger Desert 显示文摘 | Hasi Dong Guangrong Wang Guiyong | 1999 | Science in China( D-series )1999，42，2： | 1 |
| 9 | PGE geo- chemistry and Re-Os dating of massive sulfide ores from the Baimazhai Cu-Ni deposit, Yunnan Province, China 显示文摘 | Sun Xiaoming Wang Shengwei Sun Weidong Shi Guiyong Sun Yali Xiong Dexin Qu Wenjun Du Andao | 2008 | Lithos2008，105，12： | 1 |
| 10 | Photocatalytic oxidation of methyl orange in a three-phase fluidized bed reactor显示文摘 | Wooseok N Jimin K Guiyong H | 2002 | Chemosphere2002，47，： | 1 |
| 11 | Photocatalytic oxidation of methyl orange in a three - phase fluidized bed reactor显示文摘 | Wooseok N Jimin K Guiyong H | 2002 | Chemosphere2002，47，： | 1 |
| 12 | Evaluation of double vital staining with lugol’s iodine and methylene blue in diagnosing superficial esophageal lesions显示文摘 | Guiyong Peng Qinglin Long Yuwei Wu Jingjing Zhao Lei Chen Xianghong Li | 2011 | Scandinavian Journal of Gastroenterology2011，，4： | 1 |
| 13 | Synthesis of Quaternary Phosphonium Salts with Ester Functional Group and Its Application to Improve the Thermal Stability of Modified Montmorillonite显示文摘Both of quaternary ammonium and quaternary phosphonium salts of bis-hydroxyethyl terephthalate (BHET) were successfully synthesized and characterized by fourier transform infrared spectroscopy (FT-IR). These two kinds of salts were used to intercalate Na-MMT to yield two kinds of respective organo-modified MMTs. Basal spacing and thermal stability were investigated by using X-ray diffraction (XRD) and thermogravimetric analysis (TGA), respectively. The experimental results show that, as compared with Na-MMT, basal spacings of both of MMTs modified by the quaternary phosphonium salt of BHET (BHETPP) and the quaternary ammonium salt of BHET (BHEA), increase from 12.4 ? to 19.7 ? and 31.3 ?, respec-tively. Thermal stability of BHETPP-modified MMT is much better than that of BHEA-modified MMT, i e, Tonset of BHETPP-modified MMT is around 400 ℃ while Tonset of BHEA-modified MMT is near 250 ℃. Therefore, with en-larged basal spacing and excellent thermal stability, BHETPP-modified MMT is a promising organo-modified MMT which may be used to prepare polyethylene terephthalate/ MMT nanocomposite with high thermal and mechanical performance. | 王浩 王小群 NIE Cong CHEN Guiyong DU Shanyi | 2013 | Journal of Wuhan University of Technology(Materials Science)2013，28，4： | 1 |
| 14 | Geochronology of the giant Beiya gold-polymetallic deposit in Yunnan Province, Southwest China and its relationship with the petrogenesis of alkaline porphyry显示文摘 | Yu Fu Xiaoming Sun Hai Lin Haoyang Zhou Xin Li Xianqing Ouyang Liyi Jiang Guiyong Shi Yeheng Liang | 2015 | Ore Geology Reviews2015，，： | 1 |
| 15 | Structural basis of the crosstalk between histone H2B monoubiquitination and H3 lysine 79 methylation on nucleosome显示文摘Dear Editor,Histone marks deposited by post-translational modifications(PTMs)frequently occur in interrelated combinational patterns to create a complex and precise control on the chromatin structure and function.1 One of the landmark findings of histone PTM crosstalk is the trans-histone regulation of histone H3 lysine 79(H3K79)methylation by the monoubiquitination of histone H2B on lysine 120(H2BK120).2 Mono-,di-,and tri-methylation of histone H3K79 serves as a prominent histone mark that participates in transcription regulation and DNA damage response.3 H2BK120 monoubiquitination(H2BK120ub1)is a prerequisite for the efficient methylation of H3K79 by the unique non-SET domain-containing histone methyltransferase DOT1L(Disrupter of telomere silencing protein 1-like)in vivo.2 Incorporation of chemically monoubiquitinated H2B into in vitro reconstituted nucleosome directly stimulates the catalytic activity of DOT1L4(Supplementary information,Figs.S1 and S2).It still remains poorly understood how the H3K79 methyl marks are deposited and how the associated PTM crosstalk occurs on nucleosome. | Tonghui Yao Wei Jing Zhiguo Hu Ming Tan Mi Cao Qianmin Wang Yan Li Guiyong Yuan Ming Lei Jing Huang | 2019 | Cell Research2019，29，4： | 1 |
| 16 | PGE geochemistry and Re-Os dating of massive sulfide ores from the Baimazhai Cu-Ni deposit,Yunnan province,China显示文摘 | Sun Xiaoming Wang Shengwei Sun Weidong Shi Guiyong Sun Yali Xiong Dexin Qu Wenjun Du Andao | 2008 | Lithos2008，105，： | 1 |
| 17 | Control system development for flexible roll forming machine显示文摘 | Wang Guiyong Li Qiang Qian Bo | 2012 | Affective Computin: and Intelligent Interaction2012，，： | 1 |
| 18 | Structure and hard magnetic properties of TbCu_7-type SmFe_(8.95-x)Ga_(0.26)Nb_x nitrides显示文摘Nanocrystalline SmFe_(8.95-x)Ga_(0.26)Nb_xN_δ(x=0, 0.1, 0.2, 0.3) were prepared using rapid-quenching,annealing and nitriding. The magnetic properties and crystal structures were systematically studied under various wheel velocities to investigate the influence of Nb doping for the compounds. It is found that TbCu7-type structure is able to be obtained even though the wheel velocity is reduced to 20 m/s(x = 0.3). An significant increase(△T_c=70 ℃) of the Curie temperature is obtained with Nb doping at x = 0.1 due to the lattice expansion revealed by Rietveld analysis. The optimum coercivity with the value H_(cj) of 810 kA/m is achieved at x = 0.2 in the nitrides, in which a reasonable distribution of grain sizes of both TbCu_7-type SmFe_9 N_δ and α-Fe can be found. However, an excess of Nb doping may lead to the increase of the weight fraction of α-Fe, which in turn deteriorates the magnetic properties. | Wenlong Yan Ningtao Quan Yang Luo Dunbo Yu Zilong Wang Guiyong Wu Kun Zhang | 2018 | Journal of Rare Earths2018，36，2： | 0 |
| 19 | Tolerance Comparison Among Selected Spirulina Strains Cultured Under High Carbon Dioxide and Coal Power Plant Flue Gas Supplements显示文摘In order to explore the changes in the growth and protein contents of Spirulina and obtain a proper strain for the fixation of carbon dioxide(CO2 from flue gas,the strains isolated from the Spirulina farms and the strain 208 were cultured under different aeration conditions including no CO2,10%CO2 and coal power plant flue gas supplements.The physiological indexes including filament length,biomass yield and chlorophyll a,soluble protein and phycocyanin contents were determined,respectively.When cultured without CO2 supplement,the strain 4-5 exhibited the highest biomass yield(1.880 g L^(−1)and a specific growth rate(0.367 d−1.However,the specific growth rate of all strains decreased significantly when they were cultured under 10%CO2 and unfiltered coal power plant flue gas supplements.Considerable differences were noted in the performance of the experimental microalgal strains under different contemporaneous conditions.The strain 7-8 achieved the highest biomass yield(1.603 g L^(−1)and relatively high phycocyanin content(7.1%)under 10%CO2 supplement.We noted that strain 4-5 had the highest specific growth rate(0.182 d−1 and biomass yield(0.43 g L^(−1)under coal power plant flue gas supplement.Strain 6-10 displayed the highest soluble protein content(66.02%),and strain 7-8 showed the highest phycocyanin content(9.28%)under coal power plant flue gas supplement. | ZHAO Qianqian JIN Guiyong LIU Qiuke PAN Kehou ZHU Baohua LI Yun | 2021 | Journal of Ocean University of China2021，20，6： | 0 |
| 20 | Indoor Screening of Bactericides against Kiwifruit Bacterial Canker显示文摘[Objective]The paper was to screen the effective agents against kiwifruit bacterial canker in Wanzhou District of China. [Method]Ten kinds of common commercial bactericides preliminarily screened were selected for indoor antibacterial test using paper plate method and plate streaking method,and six kinds of bactericides with good antibacterial effects were further screened for indoor toxicity test. [Result]Chloramphenicoloethylicin had the best antibacterial effect,with EC50 of 36. 34 mg / L; followed by Xintianxiucai No. 6 and embamycin,with EC50 of 83. 21 and 92. 34 mg / L,respectively. [Conclusion]Chloramphenicoloethylicin,Xintianxiucai No. 6 and embamycin screened in the test had good antibacterial effect against kiwifruit bacterial canker in Wanzhou District,and chloramphenicoloethylicin was the most effective agent. These three agents could be directly applied to control kiwifruit bacterial canker in production,while application time and climate conditions in fields should also be considered during the actual application process. It is suggested that three agents can be used alternatively in order to delay the resistance of plants. | Liu Lanquan Wang Dong Liu Lu Qin Guiyong Wu Qiong | 2014 | Plant Diseases and Pests2014，5，5： | 0 |
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