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A Geochemical Study of an REE-rich Carbonatite Dyke at Bayan Obo,Inner Mongolia,Northern China

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Acta Geologica Sinica(English Edition) 2000年第3期74卷 605-612页

作者： YANG Xueming ZHENG Yongfei YANG Xiaoyong zhang peishan M.J.LE BAS Department of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China School of Ocean and Earth Science University of SouthamptonSO14 3ZHU.K.

An REE-rich carbonatite dyke was found in Dulahala, close to the Bayan Obo superlarge REE-Nb-Fe mineral deposit in Inner Mongolia, northern China. The REE content in the dyke varies greatly, from 1% up to 20% (wt), which might constitute rich REE ores. Light REEs in the carbonatite are enriched and highly fractionated relative to heavy REEs and there is no Eu anomaly. The REE and trace element distribution patterns of the carbonatite are identical to those of fine-grained dolomite marble which is the host rock of the Bayan Obo REE-Nb-Fe superlarge mineral deposit. This indicates a petrogenetic linkage between the REE-rich carbonatite and the mineralizations in this region.

关键词： rare earth elements(REE) carbonatite Bayan Obo

Endogenous retrovirus activation: potential for immunology and clinical applications

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National Science Review 2024年第4期11卷 21-23页

作者： Jundan Yu peishan Qiu Jingwen Ai Bo Liu Guan-Zhu Han Fan Zhu Wenhong zhang Jie Cui Department of Infectious Diseases Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response National Medical Center for Infectious Diseases Huashan Hospital Shanghai Medical College Fudan University CAS Key Laboratory of Molecular Virology &Immunology Shanghai Institute of Immunity and Infection Chinese Academy of Sciences University of Chinese Academy of Sciences Shanghai Huashen Institute of Microbes and Infections College of Life Sciences Nanjing Normal University State Key Laboratory of Virology and Department of Medical Microbiology School of Basic Medical SciencesWuhan University The Institute of Infection and Health Research Fudan University Key Laboratory of Medical Molecular Virology(MOE/MOH) Shanghai Medical CollegeFudan University Laboratory for Marine Biology and Biotechnology Qingdao Marine Science and Technology Center

Endogenous retroviruses (ERVs), the remnants of ancient retrovirus infections, constitute approximately 8% of the human genome and play important roles in human evolution, development,and diseases. Multiple drugs, such as DNA methyltransferase inhibitors and lysine-specific histone demethylase 1inhibitors, reactivate ERVs, induce viral mimicry and trigger innate immune responses to enhance tumor immunogenicity.

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Laccase/caffeic acid-catalyzed crosslinking coupled with galactomannan alters the conformational structure of ovalbumin and alleviates Th2-mediated allergic asthma

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Food Science and Human Wellness 2024年第4期13卷 1962-1973页

作者： Ishfaq Ahmed Suidong Ouyang Shengquan Wu Haochang Song Miaoyuan zhang Renxing Luo peishan Lu Jiaqi Deng Tingting Zheng Yanyan Wang Xinguang Liu Gonghua Huang Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics The First Dongguan Affiliated HospitalGuangdong Medical UniversityDongguan 523808China Haide College Ocean University of ChinaLaoshan CampusQingdao 266100China School of Medical Technology Guangdong Medical UniversityDongguan 523808China

Ovalbumin(OVA)is the major allergenic protein that can induce T helper 2(Th2)-allergic reactions,for which current treatment options are *** this study,we developed a polymerized hypoallergenic OVA product via laccase/caffeic acid(Lac/CA)-catalyzed crosslinking in conjunction with galactomannan(Man).The formation of high molecular weight crosslinked polymers and the Ig G-binding were analyzed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis(SDS-PAGE)and Western *** study indicated that Lac/CA-catalyzed crosslinking plus Man conjugation substantially altered secondary and tertiary structures of OVA along with the variation in surface *** digestion stability assay indicated that crosslinked OVA exhibited less resistance in simulated gastric fluid(SGF)and simulated intestinal fluid(SIF).Mouse model study indicated that Lac-Man/OVA ameliorated eosinophilic airway inflammatory response and efficiently downregulated the expression of Th2-related cytokines(interleukin(IL)-4,IL-5,and IL-13),and upregulated IFN-γand IL-10 *** of bone marrow-derived dendritic cells with Lac-Man/OVA suppressed the expression of phenotypic maturation markers(CD80 and CD86)and MHC class II molecules,and suppressed the expression levels of proinflammatory *** knowledge obtained in the present study offers an effective way to acquire a hypoallergenic OVA product that can have a therapeutic effect in alleviating OVA-induced allergic asthma.

关键词： Ovalbumin Laccase Galactomannan Conformational structure Asthma

Columbite-tantalite minerals from Nanping granitic pegmatites,South China:compositional trends and genetic implications

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Columbite-tantalite minerals from Nanping granitic pegmatite...

Epitaxy of rare earth element fluorcarbonate minerals from carbonatite dyke at Bayan Obo, Inner Mongolia, China

中国科学院地质与地球物理研究所2003学术年会

作者： Zhuming Yang,Renkui Song,Kejie Tao and peishan zhang,Beijing

The No31 pegmatite group is the largest pegmatite cluster of the Nanping pegmatite field and represents one of the most important Ta-Nb deposits in *** columbite-tantalite occurring in No31 pegmatites showed faint oscillatory zonation and complex patchy zonation patterns in back-scattered electron images. Microprobe analyses revealed that columbite-tantalite in the pegmatites has a wide range of *** Mn/(Mn+Fe)nor Ta/(Ta+Nb)atomic ratio has obvious trend of compositional variation along the profile of a single pegmatite ***,in the quadrilateral diagrams the compositional trend in columbite -tantalite varies from ferrocolumbite to tantocolumbite,then to manganotantalite. The features of zonation and composition in columbite-tantalite imply that the formation of Nanping pegmatites underwent original differentiation stage and later metasomatism stage.

关键词： Columbite-tantalite zonation pattern chemical composition compositional trend

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cnki会议

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Chinese Science Bulletin 1998年第13期43卷 1107-1111页

作者： Xueming Yang peishan zhang Kejie Tao Xiaoyong Yang Shuangxi Chen Minglong Zou M. J. Le Bas R. N. Wilson R. Ranson L. S. Campbell et al. Department of Earth and Space Sciences University of Science and Technology of China Hefei China The Advanced Center for Earth Science and Astronomy Chinese Academy of Sciences Hefei China Institute of Geology Chinese Academy of Sciences Beijing China Anhui Institute of Experimental Geology Hefei China Department of Geology University of Leicester Leicester UK The Natural History Museum London UK

Rare earth element fluorocarbonate minerals such as bastnaesite and parisite are firstly discovered in carbonatite dykes from Bayan Obo, Inner Mongolia, China. Bastnaesite rarely occurs as homogeneously single crystal, but contains microfine phase of parisite. They form regular intergrowth along (0001) plane net, which is identified as epitaxy. This eptactic texture results from the variation of chemical composition of crystallizing agents of those minerals that crystallize directly from carbonatite magma.

关键词： bastnaesite parisite epitaxy carbonatite Bayan Obo.

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浅谈中学历史教师继续课程设置的多样化

克拉玛依学刊 2001年第3期4卷 67-69页

作者：张佩珊新疆教育学院政史系

面对新世纪知识经济的挑战 ,中学历史教师的继续教育不仅要具有知识的补缺、更新和拓宽的“继承性”功能 ,更重要的是要有提高认识、开发创造性思维和创造力的“创造性”功能。要使这些功能得以发挥 ,必然要求继续教育课程设置应是多样... 详细信息

面对新世纪知识经济的挑战 ,中学历史教师的继续教育不仅要具有知识的补缺、更新和拓宽的“继承性”功能 ,更重要的是要有提高认识、开发创造性思维和创造力的“创造性”功能。要使这些功能得以发挥 ,必然要求继续教育课程设置应是多样化的 ,具有广泛的包容性 ,这是历史学科继续教育发展的必然趋势。

关键词：课程设置多样化

东喜马拉雅构造结发现的富碳硼镁钛石:硼镁钛石的新亚种

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地质科学 2000年第2期35卷 245-250,T001页

作者：刘焰钟大赉韩秀玲张培善国土资源部地质研究所北京100037 中国科学院地质研究所北京100029

在东喜马拉雅构造结火成碳酸岩脉中发现富碳硼镁钛石。晶体结构与化学成分分析表明 ,该矿物的分子式为 ( Mg1.30 ,Ti0 .32 ,Fe0 .30 ,Al0 .10 ) 2 .0 2 [( B0 .51,C0 .4 2 ) 0 .93O3]O。这提供了在 [BO3]原子团中 B可被其它元素替换的... 详细信息

在东喜马拉雅构造结火成碳酸岩脉中发现富碳硼镁钛石。晶体结构与化学成分分析表明 ,该矿物的分子式为 ( Mg1.30 ,Ti0 .32 ,Fe0 .30 ,Al0 .10 ) 2 .0 2 [( B0 .51,C0 .4 2 ) 0 .93O3]O。这提供了在 [BO3]原子团中 B可被其它元素替换的第一个实例 ,暗示该矿物可能形成于高温高压的环境下。

关键词：火成碳酸岩富碳硼钛镁石硼镁钛石新亚种