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Applied Geophysics 2007年第2期4卷 146-151页

作者： Li Ning Institute of Geophysics Academia Sinica Beijing China

This paper describes the three phenomena observed in full wave experiments： 1. the amplitudes （absolute value） of the first compressional and shear arrivals have the same variation rules; 2. the phases of the first compressional and shear arrivals are always opposite to each other; and 3. the amplitude variation periods of the first compressional and shear arrivals are 2π. A full analysis and interpretation points out that these phenomena should appear under the full wave logging condition. Hence,the basis of using phase diffrences to extract useful information from the full wave is found.

关键词： full wave logging phase relation compressional wave shear wave.

Gold mineralization in the Guilaizhuang deposit,southwestern Shandong Province,China:Insights from phase relations among sulfides,tellurides,selenides and oxides

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Gold mineralization in the Guilaizhuang deposit,southwestern...

phase and Structure in the System Gd_(2-x)Eu_xZr_2O_7 (0.0≤x≤2.0)

中国科学院地质与地球物理研究所2014年度（第14届）学术年会

作者： Wen-Gang Xu Hong-Rui Fan Fang-Fang Hu M.Santosh Kui-Feng Yang Ting-Guang Lan Bo-Jie Wen Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of Sciences China University of Geosciences(Beijing)

The Guilaizhuang gold deposit is composed of limestone- and breccia-type *** the limestone ores,gold is hosted by pyrite,As-bearing pyrite and arsenopyrite,whereas in the breccia ores,tellurides are the main gold *** often isomorphously substitutes for sulfur in sulfides in the limestone ores,but occurs as selenides in the breccia *** is the only oxide in the breccia ores,associated with barite and other *** this paper,the thermodynamic parameters,especially the Gibbs free energies of formation and reaction,of related sulfides,tellurides,selenides and oxides are computed to explain the distinct mineral styles in the limestone- and breccia-type *** construct the phase relations among minerals delineated by phase diagrams at 250 ℃,the temperature for gold precipitation in the Guilaizhuang *** to the phase relations between sulfides and selenides,we propose that gold has been transported as[Au(HS,HSe)]-,and released during rapid formation of pyrite,As-pyrite and arsenopyrite,at log/S(g) between —12.8 and— 11.4(250 ℃).In the breccia ores,log/Te(g) and log/Se(g) are constrained within —12.9 to —9.4,and —12.4 to —6.9(250 ℃),respectively,based on the mineral assemblages observed in the *** phase relations between tellurides and selenides indicate that calaverite,the only stable gold telluride mineral in nature,was not stable in the breccia ores at 250 ℃ during the gold *** on EMPA analysis,the so-called "calaverite" revealed from microscopic observations is in fact Au-Ag telluride,probably derived from the decomposition of sylvanite(AuAgTe) and petzite(AuAgTe),the only two stable Au-Ag tellurides in nature at high ***,we do not exclude the possibility that calaverite occurs in this deposit,which may have precipitated in early relatively high tellurium concentration stage preceding gold *** was not detected in gold-bearing tellurides,implying that selenide is unr

关键词： Gold mineralization Sulfide Telluride Selenide phase relation Guilaizhuang gold deposit China

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Journal of Wuhan University of Technology(Materials Science) 2014年第1期29卷 1-4页

作者：卢喜瑞 DONG Faqin SONG Gongbao LIU Ning WANG Xiaoli WU Yanlin Key Subject Laboratory of National Defense for Radioactive Waste and Environmental Security Southwest University of Science and Technology Key Laboratory of Radiation Physics and Technology (Sichuan University) Ministry of Education Institute of Nuclear Science and Technology Sichuan University Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics School of High Energy Accelerator Science Graduate University for Advanced Studies

Pyrochlore Gd2Zr2O7 are considered as an excellent candidate for treatment of radioactive waste forms, because of its superior physical, chemical and anti-irradiation properties. To investigate the phase and structure of pyrochlore Gd2Zr2O7 used for immobilizing Pu （Ⅲ）, trivalent europium was used as the simulacrum for plutonium with trivalence. The compounds of stoichiometry Gd2-xEuxZr2O7（0.0≤x≤ 2.0） synthesized by high temperature solid state reaction method, were analyzed with the help of XRD and Rietveld structural refinement method. The results indicated that the phases of compounds continuously kept the phase of pyrochlore under our experimental condition. The linear relation between a and x was discovered in the system of Gd2-xEuxZr2O7（0.0≤x≤ 2.0） at 1 773 K, which accorded with a = 10.538 41 ＋ 0.008 95 x, V = 1 170.373 32 ＋ 2.985 97 x.

关键词： pyrochlore phase relation radioactive waste structural refinement

DOMINANT PHYSICAL PROCESSES ASSOCIATED WITH phase DIFFERENCES BETWEEN SURFACE RAINFALL AND CONVECTIVE AVAILABLE POTENTIAL ENERGY

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Journal of Tropical Meteorology 2009年第2期15卷 148-154页

作者：李小凡 NOAA/NESDIS/Center for Satellite Applications and Research Camp Springs

A lag correlation analysis is conducted with a 21-day TOGA COARE cloud-resolving model simulation data to identify the phase relation between surface rainfall and convective available potential energy (CAPE) and associated physical processes. The analysis shows that the maximum negative lag correlations between the model domain mean CAPE and rainfall occurs around lag hour 6. The minimum mean CAPE lags mean and convective rainfall through the vapor condensation and depositions,water vapor convergence,and heat divergence whereas it lags stratiform rainfall via the transport of hydrometeor concentration from convective regions to raining stratiform regions,vapor condensation and depositions,water vapor storage,and heat divergence over raining stratiform regions.

关键词： phase relation convective available potential energy surface rainfall cloud-resolving model simulation

INTERACTION BETWEEN ATMOSPHERE AND OCEAN AND TELECONNECTION IN THE ATLANTIC DURING THE COLD SEASON

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Acta meteorologica Sinica 1992年第1期6卷 38-46页

作者：蒋全荣 J.M.Wallace Department of Atmospheric Sciences Nanjing UniversityNanjing Department of Atmospheric Sciences University of WashingtonU.S.A.

In this paper,the WA teleconnection pattern of SST in the Atlantic during the cold season is *** results show the WA pattern of atmosphere is linked to the SST pattern and relative higher frequencies account for most of the WA *** linked pair of atmosphere and ocean patterns might be mutually supportive and exhibit“quasi-annual cycle”.The possible explanation for the polarity reversal of WA pattern is also discussed.

关键词： interaction WA teleconnection pattern phase relation