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| 1 | Trace Elements and Rare Earth Elements of Sulfide Minerals in the Tianqiao Pb-Zn Ore Deposit,Guizhou Province,China显示文摘硫化物矿物质的踪迹元素和稀土元素元素(REE ) 被诱导地联合的血浆团 spectrometry 决定。结果显示那 V, Cu, Sn, Ga, Cd,在里面并且 Se 在闪锌矿被集中, Sb,同样 Ge,和 Tl 在方铅矿被集中,并且在黄铁矿的几乎所有踪迹元素是低的。在轻黄的闪锌矿的 Ga 和 Cd 内容在褐和黑闪锌矿比那高。Ge 的内容, Tl,在里面并且在棕色的闪锌矿的 Se 在轻黄的闪锌矿和黑闪锌矿比那高。它证明 REE 集中比在闪锌矿,和方铅矿在黄铁矿是更高的。在闪锌矿, REE 集中从轻黄的闪锌矿减少,棕色的闪锌矿,到黑闪锌矿。Ga/In 的比率是超过 10,并且分别地, Co/Ni 在学习闪锌矿和黄铁矿是不到 1 显示 Tianqiao PbZn 矿石沉积物的开始可能属于沉积改革的开始与热水的开始联系了。在在闪锌矿的 LnGa 和 LnIn 之间,并且在在方铅矿的 LnBi 和 LnSb 之间的关系,显示 Tianqiao PbZn 矿石存款可能属于沉积改革的开始。基于使球粒状陨石正常化的 REE 模式, Eu 是一个否定异例(0.130.88 ) ,和 Ce 不显示出明显的异例(0.881.31 ) ;所有样品有低全部的 REE 集中(< 3 ppm ) 并且大量轻稀土元素元素 / 高度稀土元素元素比率(1.1212.35 ) 。这些结果显示形成矿石的液体在减少的环境下面发生。从更低的含碳的 Datang 形成的闪锌矿,方铅矿,黄铁矿,矿石,改变的 dolostone 岩石,阶层碳酸盐,和黄铁矿的比较 REE 作文和参数证明形成矿石的液体可能来自 polycomponent 系统,也就是说不同的 chronostratigraphic 单位能做重要贡献到形成矿石的液体。与构造背景和以前的同位素的地球化学证据结合了,我们断定矿石存款开始是热水的,沉积改过,与形成矿石的液体的 multisources 特征。 | ZHOU Jiaxi HUANG Zhilong ZHOU Guofu LI Xiaobiao DING Wei BAO Guangping | 2011 | Acta Geologica Sinica(English Edition)2011,85,1: | 35 |
| 2 | Sulfur isotopic composition of the Tianqiao Pb-Zn ore deposit,Northwest Guizhou Province,China:Implications for the source of sulfur in the ore-forming fluids显示文摘The Tianqiao Pb-Zn ore deposit of Guizhou Province, China, is located in the mid-east of the Sichuan-Yunnan-Guizhou Pb-Zn-Ag multi-metallic mineralization area, which is representative of the Pb-Zn ore de-posits in this area. It consists of three main orebodies, whose Pb+Zn reserves are more than 0.2 million ton. This paper analyzes the sulfur isotopic composition of these orebodies. The data show that the ore minerals (galena, sphalerite, pyrite) in these orebodies are enriched in heavy sulfur, with δ34SV-CDT values varying between 8.35‰ and 14.44‰, i.e. the δ34SV-CDT values of pyrite are between 12.81‰ and 14.44‰, the mean value is 13.40‰; the δ34SV-CDT values of sphalerite are range from 10.87‰ to 14.00‰, the mean value is 12.53‰; the δ34SV-CDT values of galena are range from 8.35‰ to 9.83‰, the mean value is 8.84‰, and they have the feature of δ34Spyrite>δ34Ssphalerite>δ34Sgalena, which indicates the sulfur isotope in ore-forming fluids has attained equilibrium. The δ34S V-CDT values of the deposit are close to those of sulfates from carbonate strata of different ages in the ore-field (15‰), which suggests that the sulfur in the ore-forming fluids should be derived from the thermo-chemical sulfate reduction of sulfates from the sedimentary strata. | ZHOU Jiaxi HUANG Zhilong ZHOU Guofu LI Xiaobiao DING Wei BAO Guangping | 2010 | Chinese Journal Of Geochemistry2010,29,3: | 16 |
| 3 | Correcting method of eddy covariance fluxes over non-flat surfaces and its application in ChinaFLUX显示文摘Although Eddy Covariance (EC) technique is one of the best methods for estimating the energy and mass exchanges between underlying surface and atmosphere in micrometeorology, errors and uncertainties still exist without necessary corrections. In this paper, we will focus on the effect of coordinate system on the eddy fluxes. Based on the data observed over four sites (one farmland site, one grassland site and two forest sites), the effects of three coordinate system transforming methods (Double Rotation-DR, Triple Rotation-TR and Planar Fit-PF)on the turbulent fluxes are analyzed. It shows that (i) the corrected fluxes are more or less than the uncorrected fluxes, which is related mainly to the sloping degree of surface, wind speed and wind direction; and (ii) pitch angle has a sinusoidal dependence on wind direction, especially in the regular sloping terrain; and (iii) PF method is something like the simplification of TR or DR,and there are not obvious distinctions in correction in sloping grassland and flat farmland, but PF method is not suitable for uneven and irregular forest sites. | ZHU Zhilin, SUN Xiaomin, ZHOU Yanlian, XU Jinping, YUAN Guofu & ZHANG Renhua Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China Graduate School of the Chinese Academy of Sciences, Beijing 100039, China | 2005 | Science China Earth Sciences2005,48,z1: | 10 |
| 4 | A method of multi-objective reliability tolerance design for electronic circuits显示文摘Tolerance design plays an important role in reliability design for electronic circuits. The traditional method only focuses on the consistency of output response. It is not able to meet the needs of increasing development of electronic products. This paper researches the state of related fields and proposes a method of multi-objective reliability tolerance design. The characteristics of output response and operating stresses on critical components are both defined as design objectives. Critical components and their operating stresses are determined by failure mode and effect analysis (FMEA) and fault tree analysis (FTA). Sensitivity analysis is carried out to determine sensitive parameters that affect the design objectives significantly. Monte Carlo and worst-case analysis are utilized to explore the tolerance levels of sensitive parameters. Design of experiment and regression analysis are applied in this method. The optimal tolerance levels are selected in accord with a quality-cost model to improve consistency of output response and reduce failure rates of critical components synchronously. The application in light-emitting diode (LED) drivers indicates details and potential. It shows that the proposed method provides a more effective way to improve performance and reliability of electronic circuits. | Zhai Guofu Zhou Yuege Ye Xuerong Hu Bo | 2013 | Chinese Journal of Aeronautics2013,26,1: | 6 |
| 5 | Ammonium Salt Deposition Characteristics in an Air Cooler System Based on the Coupling of Fluid Flow and Heat Transfer Simulation显示文摘The ammonium salt corrosion is a typical failure mode for the hydrogenation reaction effluent air cooler(REAC) system. In order to investigate the corrosion characteristics in the REAC system, numerical simulations were performed by using the mixture model, the heating transfer model, and the particles tracking model. The results show that the differences between the temperature and the velocity at each cross section of the first-row and second-row tubes are small. The inertia of the particles plays an important role in the particle’s deposition, and the smaller particles distribute more uniformly in the air cooler. However, for larger particles, they prefer falling from the inner side of the vertical elbow, and preferentially depositing at the inlet header and pipes before saturation. In the heat exchanger tubes, the particle deposition number is larger in the second-row tubes than that in the first-row tubes, and the high-risk tubes mainly concentrate on the middle and right side of the air cooler. The kinetic parameters of the particles are in accordance with the blocking-prone position in many real operating conditions. | Jin Haozhe Zhou Junfeng Liu Wenwen Liu Xiaofei Ou Guofu | 2019 | China Petroleum Processing & Petrochemical Technology2019,21,4: | 4 |
| 6 | Determination of averaging period parameter and its effects analysis for eddy covariance measurements显示文摘It is more and more popular to estimate the exchange of water vapor, heat and CO2fluxes between the land surface and the atmosphere using the eddy covariance technique. To get believable fluxes, it is necessary to correct the observations based on the different surface conditions and to determine relevant techinical parameters. The raw 10 Hz eddy covariance data observed in the Yucheng and Changbai Mountains stations were recalculated by various averaging periods (from 1 to 720 min) respectively, and the recalculated results were compared with the results calculated by the averaging period of 30 mins. Meanwhile, the distinctions of fluxes calculated by different averaging periods were analyzed. The continuous 15 days observations over wheat fields in the Yucheng station were mainly analyzed. The results are shown that: (i) In the Yucheng station, compared with the observations by 30 min, when the averaging period changes from 10 to 60 min, the variations of the eddy-covariance estimates of fluxes were less than 2%; when the averaging period changes less than 10 min, the estimate of fluxes reduced obviously with the reduction of the averaging period (the max relative error was -12%); and when the averaging period exceeds 120 min, the eddy covariance estimates of fluxes will be increased and become unsteady (the max relative error is over 10%); (ii) the eddy covariance estimates of fluxes over wheat field in the Yucheng station suggusted that it is much better to take 10 min as an averaging period in studying diurnal change of fluxes, and take 30min for a long-term flux observation; and (iii) normalized ratio was put forward to determine the range of averaging period of eddy covariance measurements. By comparing the observations over farmlands and those over forests, it is indicated that the increase of eddy covariance estimates over tall forest was more than that over short vegetation when the averaging period increased. | SUN Xiaomin, ZHU Zhilin, XU Jinping, YUAN Guofu , ZHOU Yanlian & ZHANG Renhua Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China Graduate School of the Chinese Academy of Sciences, Beijing 100039, China | 2005 | Science China Earth Sciences2005,48,z1: | 3 |
| 7 | Diagenesis-Mineralization and Ore Prospecting of the Yangla Copper Deposit, Yunnan Province, Southwest China显示文摘The large-scale Yangla copper deposit,located in the central part of the Sanjiang Tethys polymetallic belt,is structurally controlled by the Jinsha River Fault and Yangla Fault.This deposit consists of seven ore blocks,including the Beiwu,Nilv,Jiangbian,Linong,Lunong, | LI Bo HUANG Zhilong ZHOU Jiaxi ZOU Guofu TANG Guo LIU Yuedong | 2015 | Acta Geologica Sinica(English Edition)2015,89,5: | 3 |
| 8 | 适于阅读的电子书设计显示文摘虽然可以在电脑屏幕上阅读文件,但纸上阅读仍然最受青睐。何时才能有一本电子书,让我们可以舒适地长时间阅读呢? | Mark T. Johnson Guofu Zhou 李庆诚 张金 | 2005 | 现代显示2005,,11: | 3 |
| 9 | Small sample test of portfolio efficiency 显示文摘 | Zhou Guofu | 1991 | Journal of Financial Economics1991,30,: | 1 |
| 10 | Osteosarcoma metastasis: prospective role of ezrin显示文摘 | Yuanjin Zhang Ling Zhang Guofu Zhang Songbai Li Jun Duan Jie Cheng Guozhen Ding Chibing Zhou Jie Zhang Pengcheng Luo Dongbing Cai Lianghong Kuang Yichun Zhou Liqun Tong Xiangdong Yu Lifang Zhang Lijun Xu Li Yu Xiaomei Shi Aihong Ke | 2014 | Tumor Biology2014,,6: | 1 |
| 11 | CpG ODN107 potentiates radiosensitivity of human glioma cells via TLR9-mediated NF-κB activation and NO production显示文摘 | Xiaoli Li Dan Liu Xin Liu Weiwei Jiang Weiying Zhou Wei Yan Yanyan Cen Bin Li Guanqun Cao Guofu Ding Xueli Pang Jianguo Sun Jiang Zheng Hong Zhou | 2012 | Tumor Biology2012,,5: | 1 |
| 12 | Ferroelectricity in dopant-free HfO_(2) thin films prepared by pulsed laser deposition显示文摘As a high-k material,hafnium oxide(HfO_(2))has been used in gate dielectrics for decades.Since the discovery of polar phase in Si-doped HfO_(2) films,chemical doping has been widely demonstrated as an effective approach to stabilize the ferroelectric phase in HfO_(2) based thin films.However,the extra capping layer deposition,post-growth annealing and wake-up effect are usually required to arouse the ferroelectricity in HfO_(2) based thin films,resulting in the increase of complexity for sample synthesis and the impediment of device application.In this study,the ferroelectricity is observed in non-capped dopant-free HfO_(2) thin films prepared by pulsed laser deposition(PLD)without post-growth annealing.By adjusting the deposited temperature,oxygen pressure and thickness,the maximum polarization up to 14.7 m C/cm^(2) was obtained in 7.4 nm-thick film.The fraction of orthorhombic phase,concentrations of defects and size effects are considered as possible mechanisms for the influences of ferroelectric prop-erties.This study indicates that PLD is an effective technique to fabricate high-quality ferroelectric HfO_(2) thin films in the absence of chemical doping,capping layer deposition and post-growth annealing,which may boost the process of nonvolatile memory device application. | Yongjian Luo Zhenxun Tang Xiaozhe Yin Chao Chen Zhen Fan Minghui Qin Min Zeng Guofu Zhou Xingsen Gao Xubing Lu Jiyan Dai Deyang Chen Jun-Ming Liu | 2022 | Journal of Materiomics2022,8,2: | 1 |
| 13 | Antimalarial artesunate protects sepsis model mice against heat-killed Escherichia coli challenge by decreasing TLR4, TLR9 mRNA expressions and transcription factor NF-κB activation显示文摘 | Bin Li Rong Zhang Jun Li Lezhi Zhang Guofu Ding Ping Luo Shengqi He Yan Dong Weiwei Jiang Yongling Lu Hongwei Cao Jiang Zheng Hong Zhou | 2007 | International Immunopharmacology2007,,3: | 1 |
| 14 | Asymmetries in Stock Returns: Statistical Tests and Economic Evaluation显示文摘 | Yongmiao Hong Jun Tu Guofu Zhou | 2007 | The Review of Financial Studies2007,,5: | 1 |
| 15 | Investigation on arc characteristics under axial and transverse magnetic fields显示文摘 | Zhai Guofu Zhou Xue Yang Wenying | 2008 | IEICE Technical Report2008,108,296: | 1 |
| 16 | Mapping transforms and periodicity of digital watermarking显示文摘 | Zhou Jiancheng Tang Xuhui Li Guofu | 2000 | Transaction of North Industry University2000,12,13: | 1 |
| 17 | Small Sample Tests of Portfolio Efficiency显示文摘 | Guofu Zhou | 1991 | Journal of Financial Economics1991,,30: | 1 |
| 18 | Mapping transforms and periodicity of digital watermarking显示文摘 | Zhou Jiancheng Tang Xuhui Li Guofu | 2000 | Transaction of North Industry University2000,12,13: | 1 |
| 19 | Study on arc generated by opening e- lectromagnetic relay contacts in DC low-current resistive circuit with constant velocity 显示文摘 | ZHAI Guofu ZHOU Xue | 2008 | IEICE Transaction on Electronics2008,91,8: | 1 |
| 20 | UV light absorbers executing synergistic effects of passivating defects and improving photostability for efficient perovskite photovoltaics显示文摘Metal halide perovskite-based solar cells(PSCs) have rapidly-increased power conversion efficiency(PCE)exceeding 25% but poor stability especially under ultraviolet(UV) light. Meanwhile, non-radiative recombination caused by diverse defects in perovskite absorbers and related interfaces is one of the major factors confining further development of PSCs. In this study, we systematically investigate the role of 2-(2-hydroxy-5-methylphenyl)benzotriazole(UVP) additive in perovskite layers. By adjusting the amount of doped UVP, the quality of perovskite absorbers is significantly improved with enlarged grains, longer lifetime and diffusion length of charge carriers. Furthermore, UVP not only reduces defects for less nonradiative recombination, but also matches energy level alignment for efficient interfacial charge extraction. X-ray photoelectron spectroscopy confirms that N-donor of UVP molecule coordinates with undercoordinated Pb^(2+) on the surface. Interestingly, UVP incorporated in PbI_(2) protects the perovskite by absorbing UV through the opening and closing of the chelating ring. Eventually, the UVP treated PSCs obtain a champion PCE of 22.46% with remarkably enhanced UV stability, retaining over 90% of initial PCE after 60 m W/cm^(2) strong UV irradiation for 9 h while the control maintaining only 74%. These results demonstrate a promising strategy fabricating passivated and UV-resistant perovskite materials simultaneously for efficient and stable perovskite photovoltaics. | Jiale Li Wenjing Qi Yameng Li Sumin Jiao Hao Ling Peng Wang Xin Zhou Khumal Sohail Guangcai Wang Guofu Hou Jingshan Luo Ying Zhao Liming Ding Yuelong Li Xiaodan Zhang | 2022 | Journal of Energy Chemistry2022,31,4: | 1 |