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HF: 作品数：1984被引量：4861H指数：25; 导出分析报告; 相关作者：张义文杨向东黄珂朱正和童雪松更多>>; 相关机构：中国科学院河南华之韵服饰有限公司宁波市嘉乐电器有限公司哈尔滨工业大学更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划中国地质调查局地质调查项目国家高技术研究发展计划更多>>

Thermodynamic and application study of complicated extraction system Ce(Ⅳ)-HF-H_(3)BO_(3)-H_(2)SO_(4) using Cyanex 923: 《Journal of Rare Earths》2021年第9期1117-1125,共9页Dan Zou Haitian Li Ji Chen Deqian Li; Project supported by the Open Research Fund for State Key Laboratory of Baiyunobo Rare Earth Resources Researches and Comprehensive Utilization(E0900001);the National Basic Research Program of China(2012CBA01202);the National Natural Science Foundation of China(51174184)。; This article aims to reduce the environmental pollution while maximizing the recovery of REEs as well as associate resource-fluorine(F)from bastnaesite.This paper investigates the extraction equilibrium process and me...; 关键词：Ce(Ⅳ)-HF-H_(3)BO_(3)-H_(2)SO_(4) Extraction Cyanex 923 THERMODYNAMIC Mechanism Rare earths

Superconductivity in an intermetallic oxide Hf_(3)Pt_(4)Ge_(2)O: 《Chinese Physics B》2021年第7期507-514,共8页Chengchao Xu Hong Wang Huanfang Tian Youguo Shi Zi-An Li Ruijuan Xiao Honglong Shi Huaixin Yang Jianqi Li; the National Key Research and Development Program of China(Grant Nos.2016YFA0300303,2017YFA0504703,2017YFA0302904;2017YFA0303000);the National Basic Research Program of China(Grant No.2015CB921304);the National Natural Science Foundation of China(Grant Nos.11774391,11774403,and 11804381);the Strategic Priority Research Program(B)of the Chinese Academy of Sciences(Grant Nos.XDB25000000and XDB07020000);the Scientific Instrument Developing Project of the Chinese Academy of Sciences(Grant No.ZDKYYQ20170002);the China Postdoctoral Science Foundation(Grant No.BX20180351)。; Discovery of a new superconductor with distinct crystal structure and chemistry often provides great opportunity for further expanding superconductor material base,and also leads to better understanding of superconduc...; 关键词：SUPERCONDUCTIVITY intermetallic oxide 5d-electron

Initial subduction-related magmatism in southern Alaska identified by geochemistry and zircon Hf-O isotopes被引量：2: 《Science Bulletin》2021年第10期1030-1036,M0004,共8页Jin-Hui Yang Hao Wang Sun-Lin Chung Yu-Sheng Zhu Ronald Cole; This work was supported by the National Natural Science Foundation of China(41688103);the Ministry of Science and Technology of China(2016YFC0600109).; Abundant arc-type magmatic and metamorphic rocks exist on Earth today,which provide insights into the equilibrium state of the subduction process.However,magmatic samples generated during the initial stage of subducti...; 关键词：Initial subduction Arc magmatism Zircon Hf-O isotopes Subduction of the Paleo-Pacific oceanic PLATE

东亚地区高频频率预测方法精细化研究: 《电波科学学报》2020年第5期721-729,共9页陈强王健黄翔东; 青岛海洋科学与技术国家实验室2016年度开放基金(QNLM2016ORP0411);天津大学青岛海洋技术研究院自主创新创业项目(20190201-3);国家973计划(61331901)。; 为进一步提升高频(high frequency,HF)频率预测方法精度,提出了一种适用于东亚区域HF可用频率的精细化频率预测方法.该方法在1948—2006年8个电离层观测站的特征数据统计分析基础上,基于太阳10.7 cm辐射通量进行了F 2层OWF-MUF和HPF-MU...; 关键词：高频(HF) 频率预测东亚区域转换因子

Geodynamic Background of Intracontinental Cenozoic Alkaline Volcanic Rocks in Laojiezi, Western Yangtze Craton: Constraints from Sr-Nd-Hf-O Isotopes被引量：13: 《Acta Geologica Sinica(English Edition)》2018年第6期2098-2119,共22页YAN Qinggao JIANG Xiaojun LI Chao ZHOU Limin WANG Zhongqiang Sultan Baig SHER QU Wenjun DU ANDao; funded by the Open Foundation of the Beijing SHRIMP Center (DDC15-016);the Applied Basic Research Program Youth Project of Yunnan Province (2016DF031);the National Basic Research Program of China (2015CB452605); The Laojiezi alkaline volcanic rocks, which are located in the intraplate region of the Yangtze craton, coincide with the formation of the Jinshajiang-Ailaoshan-Red River alkaline rock belt. Although this belt has bee...; 关键词：Sr-Nd-Hf-O isotopes alkaline volcanic rocks POST-COLLISION Laojiezi deposit western Yangtze craton

Al-Er-Zr/Hf合金析出相高温粗化行为: 《材料热处理学报》2018年第6期62-67,共6页徐静文胜平刘同辉王为聂祚仁; 国家重点基础研究发展计划(973)基金(2012CB619503);国家自然科学基金(51201003); 将峰时效态Al-Er-Zr/Hf合金依次在450℃、500℃高温退火,探讨Al-Er-Zr/Hf合金析出相的高温粗化行为。结果表明：经450℃退火处理时,Al-Er-Zr/Hf合金硬度明显下降,电导率先下降后上升,且经450℃×100 h退火后的电导率高于峰时效态;再经50...; 关键词：Al-Er-Zr/Hf合金时效析出相粗化

Zircon U-Pb Ages and Sr-Nd-Hf Isotopic Characteristics of the Huichizi Granitic Complex in the North Qinling Orogenic Belt and Their Geological Significance被引量：6: 《Journal of Earth Science》2018年第3期492-507,共16页Youwei Chen Ruizhong Hu Xianwu Bi Shaohua Dong Yue Xu Ting Zhou; financially supported by the National Basic Research Program of China (No. 2014CB440906);the Strateic Priority Research Program (B) of Chinese Academy of Sciences (No. XDB18030200);the National Natural Sciences Foundation of China (Nos. 41473049, 41103027); The Huichizi granite complex is the largest Paleozoic 1-type intrusion located in the North Qinling orogenic belt （NQB）. In this study, we present systematic geochemical element data, zircon U-Pb ages, Ln-Hf isotopi...; 关键词：U-Pb age Sr-Nd-Hf isotope Huichizi granitic complex adakitic granite North Qinling orogen.

Hidden spin polarization in the 1T-phase layered transition-metal dichalcogenides MX_2(M = Zr, Hf; X = S, Se, Te)被引量：5: 《Science Bulletin》2018年第2期85-91,共7页Cai Cheng Jia-Tao Sun Xiang-Rong Chen Sheng Meng; financially supported by the National Basic Research Program of China (2015CB921001, 2013CBA01600, and 2016YFA0300902);the National Natural Science Foundation of China (61306114);‘‘Strategic Priority Research Program (B)" of Chinese Academy of Sciences (XDB07030100);the National Natural Science Foundation of China Academy of Engineering Physics (U1430117);the Science Challenge Project (TZ2016001); The recent discovery of hidden spin polarization emerging in layered materials of specific nonmagnetic crystal is a fascinating phenomenon, though hardly explored yet. Here, we have studied hidden spin tex- tures in l...; 关键词：Hidden spin polarizationTransition-metal dichalcogenides 1T-phaseHelical spin textureCentrosymmetric

C、B、Hf在镍基高温合金中作用的研究进展被引量：15: 《铸造》2017年第10期1076-1081,共6页余竹焕张洋翟娅楠王盼航; 国家重点基础研究发展计划项目(2010CB610406);陕西省教育厅专项科研计划项目(15JK1487);国家自然科学基金项目(项目号51201130;51331005);国家高技术研究发展计划项目(2012 AA03A511); 高温合金由于较高的高温强度以及良好的组织稳定性等特征,被广泛地应用于航空航天领域。随着高温合金的发展,难熔元素以及贵金属元素的添加使得其成本大幅度提高,同时也使铸造缺陷显著增加。近年来的研究发现:C、B、Hf的添加可以强化晶...; 关键词：镍基高温合金碳硼铪

Hf、N以不同比例掺杂ZnO的第一性原理计算被引量：9: 《原子与分子物理学报》2017年第2期362-370,共9页张文蕾张航彭彩云马兰容婧婧张丽丽; 国家重点基础研究发展计划子课题(2012CB821503);新疆维吾尔自治区自然科学基金青年基金(2015211C301);新疆凝聚态物理重点学科专项经费开放课题(2012ZDXK31);伊犁师范学院校级科研项目(2016);伊犁师范学院2015年度研究生科研创新项目(2015YSY024); 基于第一性原理密度泛函理论,计算分析了Hf、N以不同掺杂比例掺杂ZnO(Zn_(16)O_(16))形成Zn_(15)O_(16-x_HfN_x(x=1,2,3,4)体系的结构参数、电子结构、Mulliken电荷布居和光学方面的性质.计算结果表明,掺杂体系晶胞体积不同程度增大;x=...; 关键词：第一性原理 ZnO HF N掺杂结构参数电子结构光学性质

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