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| 1 | Geochemistry of Metamafic Dykes from the Quanji Massif: Petrogenesis and Further Evidence for Oceanic Subduction, Late Paleoproterozoic, NW China显示文摘A suite of 1.84–1.92 Ga metamafic dykes within the paragneiss suite(khondalite) of the Quanji massif in NW China, has been chosen in this study for further understanding the tectonic evolution and possible links to the global Columbia supercontinent. Occurrence and field relations suggest that they were formed coevally with a previous studied 1.83–1.85 Ga metamafic dyke swarms. Whole-rock major and trace elemental geochemistry suggests precursor magma of the amphibolites being generated from a volcanic arc-related tectonic setting rather than a back-arc environment where the metamafic dyke swarms were emplaced. The metamafic dykes show enrichment of LREE and strongly negative anomalies for Ta-Nb, Zr-Hf and Ti, have high SiO2(49.3 wt.%–52.5 wt.%) but low MgO(6.40 wt.%–7.76 wt.%) contents and Mg#(Mg#=[100×(MgO/40.3)]/[MgO/40.3+FeO/71.8]) values(45.7–52.1), suggesting evolved precursor magma. The high values of La/Ta(22.2–42.8) and La/Nb(1.71–2.47), mildly negative εNd(t) values(-2.51–0.15), with depleted mantle model ages(TDM) of 2.45–2.84 Ga, suggest that their precursor magmas were possibly derived from a subduction-related fluid metasomatized Archean sub-continental lithospheric mantle. This study provides further evidence for oceanic plate subduction prevailing before or around 1.85 Ga, which confirms a prolonged subduction-accretion-collision history in the NW China which is possibly linked to the assembly of the Columbia supercontinent. | Hassan Abdelslam Mustafa Qinyan Wang Nengsong Chen Fanxi Liao Min Sun Meshaal Abdelgadir Salih | 2016 | Journal of Earth Science2016，27，4： | 2 |
| 2 | GCC Countries’Future Relationship With the Shanghai Cooperation Organisation:Motivation and Prospect显示文摘The Gulf Cooperation Council(GCC)is the most important economic,energy and political coalition in the Middle East.The Shanghai Cooperation Organisation(SCO)is the most influential Eurasian political and economic bloc.In the vicissitude international situation,the SCO is expanding westward;Qatar and Saudi Arabia have become the partners of dialogue;Bahrain,Kuwait and the UAE have applied for being partners for dialogue.Likewise,the GCC is looking eastward,exploring cooperation with Russia within the framework of‘OPEC+’,with China in‘China-GCC Summit and China-GCC Strategic Dialogue’,and with India within the framework of I2U2(Israel,India,United States and the United Arab Emirates).The‘SCO+GCC+’cooperation mechanism is inclusive,compatible with the US,European and the NATO’s military engagement with the GCC,which will open a new ground for bilateral cooperation and multilateral interaction between East Asia,South Asia,Central Asia,North Asia and West Asia,conducive to building‘an Asian community of shared future’in the long run. | Degang Sun Fanxi He | 2023 | Asian Journal of Middle Eastern and Islamic Studies2023，17，1： | 0 |
| 3 | Visible-Light-Responsive Crystalline Solids by Equipping Covalent Organic Frameworks with Donor-Acceptor Stenhouse Adducts显示文摘Controlling properties of crystalline solids by light remains a challenge because the lack of intrinsic structural flexibility limits the necessary molecular mobility for photoisomerization. In this work, we reported a series of visible-light-responsive covalent organic frameworks (COFs) by introducing donor-acceptor Stenhouse adducts (DASAs) with various electron-withdrawing moieties via a post-modified strategy. The DASAs-functionalized COFs exhibit distorted honeycomb layered topology with long-range periodicity. The DASAs grafted on the skeletons are pointing into the nanopores of COFs, which weakens intermolecular aggregation and ensures sufficient free volume to undergo reversible isomerization between linear and cyclic states. Furthermore, the crystalline and optical properties of COFs as well as the geometrical size and hydrophilicity inside the nanopores were reversibly controlled by alternating visible light irradiation and heat. Finally, methyl violet was used as the cargo molecules to be immobilized into the nanopores of COFs, which showed fast release under controlling of visible light. | Yongli Duan Fanxi Sun Ang Gao Zhen Wang Xiaoyu Xiong Lijun Mao Bo Han Chao He Xu Deng Yonghao Zheng Dongsheng Wang | 2023 | Chinese Journal of Chemistry2023，41，19： | 0 |
| 4 | 中国热带和亚热带常绿林凋落物季节特征及适应策略显示文摘本研究收集了来自中国热带/亚热带常绿林共85个站点的凋落物量季节性变化数据,并采用线性回归、结构方程模型构建以及相位差分析等方法,综合探究中国热带/亚热带地区常绿阔叶林和针叶林叶片脱落对土壤水分、饱和水气压差和辐射强度等气候因子的响应机制。研究结果显示,在雨热同期和雨热异期两种热带/亚热带气候类型中,呈现出两种典型凋落物的物候类型(单峰季节型/双峰季节型)。在雨热同期气候条件下,光照强度和降水呈现季节性正相关,单峰的凋落物峰值和双峰的第一个峰值约出现在3–4月,不断增加的光照能促进新叶的萌发,老叶被代谢更强的新叶所替代,该类型属于一种最大程度利用光照来实现树木生长的自适应策略。双峰的第二个峰值出现在雨季末期,约在8–10月,是由不断增强的水分亏缺所导致的(常绿阔叶林:大气水分亏缺;常绿针叶林:土壤水分亏缺),这种类型是一种凋落老叶减少水分丢失来应对水分胁迫的自适应策略。在雨热异期气候条件下,光照强度和降水呈现季节性负相关,饱和水气压差与光照强度表现出一致的季节性动态变化,诱导了常绿阔叶林单峰和双峰物候的第一个凋落峰(约在3–4月),是一种权衡大气干旱胁迫和最大程度利用光照进行生长的综合自适应策略。在雨季初期,显著的土壤水分亏缺加速叶片凋落,诱导了常绿阔叶林双峰物候的第二个凋落峰(约在11月),属于凋落老叶应对土壤水分胁迫的自适应策略。这些研究结果可以为地球系统模式中热带物候的精确模拟提供重要参考。 | Yuhang Dai Fanxi Gong Xueqin Yang Xiuzhi Chen Yongxian Su Liyang Liu Jianping Wu Xiaodong Liu Qingling Sun | 2022 | Journal of Plant Ecology2022，15，2： | 0 |
| 5 | Geochemistry and Geochronology of the High-Mg Gabbro Dykes from Quanji Massif: Implications for the Amalgamation of Tarim Block in NW China and Assembly of the Rodinia Supercontinent显示文摘The Tarim Craton is one of the major continental blocks in China.Mafic dykes,ultra-mafic–mafic–carbonatite complex and ultra-mafic–mafic pluton of 0.82–0.75 Ga widely occur in Kuluktage,Aksu and Tieklik area | LIAO Fanxi CHEN Nengsong M.Santosh SUN Min WANG Qinyan XU Yixian | 2016 | Acta Geologica Sinica(English Edition)2016，90，S1： | 0 |
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