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| 1 | 安徽沿江地区燕山期含铜岩体稀土、微量地球化学特征显示文摘安徽沿江地区位于长江中下游岩浆成矿带中段,其中众多矿床的形成与燕山期岩浆密切相关。对安徽沿江地区(铜陵、安庆和庐纵)燕山期中酸性含铜岩体地球化学研究表明:含铜岩体稀土特征总体表现为右倾型,LREE富集,HREE亏损但表现为平缓的曲线,无明显的Eu异常,∑REE含量变化范围在85.84×10^-6~446.26×10^-6,(La/Yb)N值为7.87至63.8,具有高Th,Sr;低Cr,Ni;La/Nb(平均值为3.4),Nb/U(平均值为5.24)和Nb/Pb(平均值为1.47)等特征,结合同位素特征,为壳幔混熔的物源区。研究还表明,本区燕山期含铜岩体可能来自于底侵的慢源碱性玄武岩浆同化混染古老地壳物质同时结晶分异的产物。其中岩体中的铜能否参与成矿关键取决于是否发生热液蚀变交代作用。 | 谢建成 杨晓勇 Insung Lee | 2008 | 矿物岩石2008,28,1: | 10 |
| 2 | Mineralization,Geochemistry and Zircon U-Pb Ages of the Paodaoling Porphyry Gold Deposit in the Guichi Region,Lower Yangtze Metallogenic Belt,Eastern China显示文摘The newly discovered Paodaoling porphyry Au deposit from the Guichi region, Lower Yangtze River Metallogenic Belt(LYRB), contains >35 tons of Au at an average grade of ~1.7 g/t. It is a porphyry ‘Au-only' deposit, as revealed by current exploration in the depths, mostly above-400 m, which is quite uncommon among coeval porphyry mineralization along the LYRB. Additionally, there are also Cu-Au bearing porphyries and barren alkaline granitoids in the Paodaoling district. Zircon LA-ICP-MS U-Pb dating of the Cu-Au-bearing porphyries yield an age of 141–140 Ma, falling within the main magmatic stage of the LYRB, whereas the barren granites give an age of 125–120 Ma, coeval with the regional Atype granites. The Cu-Au-bearing porphyries are LILE-, LREE-enriched and HFSE-depleted, typical of arc magmatic affinities. The barren granites are HFSE-enriched, with lower LREE/HREE ratios and pronounced negative Eu anomalies. The Cu-Au-bearing porphyries in the Paodaoling district have high oxygen fugacities and high water content. Pyrite sulfur isotopes of the Paodaoling gold deposit indicate a magmatic-sedimentary mixed source for the ore-forming fluids. Based on the alteration and poly-metal zonation of the deepest exploration drill hole from the Paodaoling Au deposit, we propose that Cu ore bodies could lie at depth beneath the current Au ore bodies. The magmatism and associated Cu-Au mineralization of the Paodaoling district are likely to have formed in a subduction setting, during slab rollback of the paleo-Pacific plate. | DUAN Liu'an YANG Xiaoyong DENG Jianghong WANG Fangyue LEE Insung | 2018 | Acta Geologica Sinica(English Edition)2018,92,2: | 6 |
| 3 | Piaoac Granites Related W-Sn Mineralization, Northern Vietnam: Evidences from Geochemistry, Zircon Geochronology and Hf Isotopes显示文摘Piaoac granites exposed in the Cao Bang region, northern Vietnam, are S-type granite, which are associated with W-Sn-Mo-Be-F mineralization. Zircon U-Pb ages, major and trace elements, mineral chemical and Hf isotopic compositions of the W-Sn-bearing granites from the Piaoac District have been investigated in detail. LA-ICP-MS U-Pb dating of zircon grains from these granites yielded ages of 82.5±2.3 and 82±1.8 Ma, representing an episode of Late Cretaceous magmatic event. These granites are characterized by high peraluminous and have typical S-type geochemical signatures with high SiO_2(72.37 wt.%–73.07 wt.%), high A/CNK values(1.61–1.65) and Al_2O_3(14.4 wt.%–15 wt.%). They are enriched in Rb, U, K, Th, Ta and Pb and display pronounced negative Ba, Sr, Nb, Ti and Eu(Eu/Eu*=0.19–0.24) anomalies. The high degree of fractional crystallization is characterized by low Rb, Sr, Ba and Eu concentrations with high ratios of La/Sm and Eu/Eu*. Zircon grains show εHf(t) values from-9.69 to-0.9 and the corresponding TDM2 range from 1.2 to 1.7 Ga, indicating that these granites could be derived from the Proterozoic basement rocks with minor input from mantle-derived magmas. The calculation of Fe^(3+) and Fe^(2+) of biotites indicates a low oxygen fugacity condition(log fO_2 ranging from 10-17 to 10-18 bars, below MH), which is favorable for the W-Sn mineralization. Tungsten and tin have been enriched in granitic magmas through fractionation, and low oxygen fugacity conditions have promoted the accumulation and transportation of W-Sn in the hydrothermal fluids, leading to deposition of mineral phases. The geochemical data suggest that Piaoac granites formed in an extensional setting related with the Late Cretaceous magmatism occurring large-scale lithospheric extensional in South China Block. | Tuan Anh Nguyen Xiaoyong Yang Hien Vu Thi Lei Liu Insung Lee | 2019 | Journal of Earth Science2019,30,1: | 2 |
| 4 | Using H - and O- isotopic data for estimating the relative contributions of rainy and dry season precipitation to groundwater:example from Cheju Island, Korea 显示文摘 | Kwang - Sik Lee Wenner D B Insung Lee | 1999 | Journal of Hydrology1999,222,: | 1 |
| 5 | Tree-Based Index Overlay in Hybrid Peer-to-Peer Systems显示文摘Hybrid Peer-to-Peer(P2P) systems that construct overlay networks structured among superpeers have great potential in that they can give the benefits such as scalability,search speed and network traffic,taking advantages of superpeer-based and the structured P2P systems.In this article,we enhance keyword search in hybrid P2P systems by constructing a tree-based index overlay among directory nodes that maintain indices,according to the load and popularity of a keyword.The mathematical analysis shows that the keyword search based on semi-structured P2P overlay can improve the search performance,reducing the message traffic and maintenance costs. | InSung Kang SungJin Choi Member, IEEE SoonYoung Jung SangKeun Lee | 2010 | Journal of Computer Science & Technology2010,25,2: | 1 |
| 6 | Using H- and O-isotopic data for estimating the relative contributions of rainy and dry season precipitation to groundwater: example from Cheju Island, Korea显示文摘 | Kwang-Sik Lee Wenner D B Insung Lee | 1999 | Journal of Hydrology1999,,222: | 1 |
| 7 | Mongolian coal-bearing basins: Geological settings, coal characteristics, distribution, and resources显示文摘 | Bat-Orshikh Erdenetsogt Insung Lee Delegiin Bat-Erdene Luvsanchultem Jargal | 2009 | International Journal of Coal Geology2009,,2: | 1 |
| 8 | Adsorption of 4-biphenylisocyanide on gold and silver nanoparticle surfaces: Surface-enhanced Raman scattering study显示文摘 | Sung Jin Bae Chung-ro Lee Insung S Choi | 2002 | J Phys Chem B2002,106,: | 1 |
| 9 | Intelli- gent household LED lighting system considering energy effi- ciency and user satisfaction 显示文摘 | BYUN Jinsung HONG Insung LEE Byoungjoo | 2013 | IEEE Transactions on Con- sumer Electronics2013,59,1: | 1 |
| 10 | Strong contact coupling of neuronal growth cones with height-controlled vertical silicon nanocolumns显示文摘 | Seong-Min Kim Seyeong Lee Dongyoon Kim Dong-Hee Kang Kisuk Yang Seung-Woo Cho Jin Seok Lee Insung S. Choi Kyungtae Kang Myung-Han Yoon | 2018 | Nano Research2018,11,5: | 0 |
| 11 | Design and roles of RGO-wrapping in charge transfer and surface passivation in photoelectrochemical enhancement of cascade-band photoanode显示文摘快电荷转移和 anti-photocorrosion 是为为 photoelectrochemical (PEC ) 开发有效、持久的 photoanodes 的二个关键因素房间。减少的 graphene 氧化物(RGO ) 是能提供的一个有希望的 photoanode 元素这两。在这研究,我们阐明了在电荷转移和由包 RGO 的 photoanode 的精确设计和它的 PEC 性质的检查的 photoanodes 的表面钝化的 RGO 的角色。有三个不同图案的 hetero-nanorods (HNR ) 的数组作为积木用 RGO, CdSe nanoparticles (NP ) ,和 ZnO nanorods (NR ) 作为 photoanodes 被制作。CdSe@ZnO HNR 被与 CdSe NP 装饰 ZnO NR 准备。有限元素的分析和试验性的研究证明在 CdSe@ZnO HNR,真希望, ZnO NR 被 RGO 包,在 CdSe 和 ZnO 之间的电导率被 RGO 提高到梭费用。如果 RGO 仅仅包围了 CdSe@ZnO HNR 的外面,腐蚀由于 RGO 的钝化效果被减缓,它增加了 photoanode 的电子一生。如果 CdSe 和 ZnO 被 RGO 充分包,二个上述的盒子的优点两个都被获得。有控制位置的图案的包 RGO 的 CdSe@ZnO HNR 与高 PEC 效率,和发达合成正在答应 photoanode 材料过程能被使用作为一块积木用 RGO 探索下一代的 photoanodes 的设计和制造。 | Zhuo Zhang Mingi Choi Minki Baek Insung Hwang Changshin Cho Zexiang Deng Jinwoo Lee Kijung Yong | 2017 | Nano Research2017,10,7: | 0 |
| 12 | Sound transducer calibration of ambulatory audiometric system utilizing delta learning rule显示文摘An efficient calibration algorithm for an ambulatory audiometric test system is proposed. This system utilizes a personal digital assistant (PDA) device to generate the correct sound pressure level (SPL) from an audiometric transducer such as an earphone. The calibrated sound intensities for an audio-logical examination can be obtained in terms of the sound pressure levels of pure-tonal sinusoidal signals in eight-banded frequency ranges (250, 500, 1 000, 2 000, 3 000, 4 000, 6 000 and 8 000 Hz), and with mapping of the input sound pressure levels by the weight coefficients that are tuned by the delta learning rule. With this scheme, the sound intensities, which evoke eight-banded sound pressure levels by 5 dB steps from a minimum of 25 dB to a maximum of 80 dB, can be generated without volume displacement. Consequently, these sound intensities can be utilized to accurately determine the hearing threshold of a subject in the ambulatory audiometric testing environment. | KIM Kyeong-seop SHIN Seung-won YOON Tae-ho LEE Sang-min LEE Insung RYU Keun ho | 2011 | Journal of Central South University2011,18,6: | 0 |