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5篇 您的检索式:作者名="Changlei Guo"
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1Geochemistry, Geochronology and Lu-Hf Isotopes of Peraluminous Granitic Porphyry from the Walegen Au Deposit, West Qinling Terrane显示文摘Walegen Au deposit is closely correlated with granitic intrusions of Triassic age, which are composed of granite and quartz porphyries. Both granite porphyry and quartz porphyry consist of quartz, feldspar and muscovite as primary minerals. Weakly peraluminous granite porphyry(A/CNK=1.10–1.15) is enriched in LREE, depleted in HREE with Nb-Ta-Ti anomalies, and displays subduction-related geochemistry. Quartz porphyry is strongly peraluminous(A/CNK=1.64–2.81) with highly evolved components, characterized by lower TiO_2, REE contents, Mg~#, K/Rb, Nb/Ta, Zr/Hf ratios and higher Rb/Sr ratios than the granite porphyry. REE patterns of quartz porphyry exhibit lanthanide tetrad effect, resulting from mineral fractionation or participation of fluids with enriched F and Cl. LAICP-MS zircon U-Pb dating indicates quartz porphyry formed at 233±3 Ma. The ages of relict zircons from Triassic magmatic rocks match well with the detrital zircons from regional area. In addition, ε_(Hf)(t) values of Triassic magmatic zircons from the granite and quartz porphyries are -14.2 to -9.1(with an exception of +4.1) and -10.8 to -8.6 respectively, indicating a crustal-dominant source. Regionally, numerous Middle Triassic granitoids were previously reported to be formed under the consumption of Paleotethyan Ocean. These facts indicate that the granitic porphyries from Walegen Au deposit may have been formed in the processes of the closing of Paleotethyan Ocean, which could correlate with the arc-related magmatism in the Kunlun orogen to the west and the Qinling orogen to the east.GUO Xianqing YAN Zhen Jonathan C.AITCHISON FU Changlei WANG Zongqi 2017Acta Geologica Sinica(English Edition)2017,91,6:3
2Visible Raman and Brillouin lasers from a microresonator/ZBLAN-fiber hybrid system显示文摘Raman and Brillouin lasers based on a high-quality(high-Q) whispering gallery mode microresonator(WGMR)are usually achieved by employing a tunable single-frequency laser as a pump source. Here, we experimentally demonstrate visible Raman and Brillouin lasers using a compact microresonator/ZrF4-BaF2-LaF3-AlF3-NaF(ZBLAN)-fiber hybrid system by incorporating a WGMR with a fiber-compatible distributed Bragg reflector/fiber Bragg grating to form a Fabry–Perot(F-P) fiber cavity and using a piece of Pr:ZBLAN fiber as gain medium.The high-Q silica-microsphere not only offers a Rayleigh-scattering-induced backreflection to form the ~635 nm red laser oscillation in the F-P fiber cavity, but also provides a nonlinear gain in the WGMR itself to generate either stimulated Raman scattering or stimulated Brillouin scattering. Up to six-order cascaded Raman lasers at0.65 μm, 0.67 μm, 0.69 μm, 0.71 μm, 0.73 μm, and 0.76 μm are achieved, respectively. Moreover, a Brillouin laser at 635.54 nm is clearly observed. This is, to the best of our knowledge, the first demonstration of visible microresonator-based lasers created by combining a Pr:ZBLAN fiber. This structure can effectively extend the laser wavelength in the WGMR to the visible waveband and may find potential applications in underwater communication, biomedical diagnosis, microwave generation, and spectroscopy.SHUISEN JIANG CHANGLEI GUO KAIJUN CHE ZHENGQIAN LUO TUANJIE DU HONGYAN FU HUIYING XU ZHIPING CAI 2019Photonics Research2019,7,5:1
3An Egr-1-specific DNAzyme regulates Egr-1 and proliferating cell nuclear antigen expression in rat vascular smooth muscle cells显示文摘Junbiao Zhang Changlei Guo 2013Exp Ther Med2013,5,5:1
4Efficacy and Safety of Dexamethasone Ointment on Recurrent Aphthous Ulceration显示文摘Chuanxia Liu Zengtong Zhou Guanjian Liu Qintao Wang Jiangang Chen Ling Wang Yongmei Zhou Guangying Dong Xueyi Xu Yuechun Wang Yiqing Guo Mei Lin Lan Wu Gefei Du Changlei Wei Xin Zeng Xiaoyi Wang Junzheng Wu Bingqi Li Gang Zhou Hongmei Zhou 2012The American Journal of Medicine2012,,3:1
5《跨边界资源管理》书评显示文摘由郭荣星教授撰写的《跨边界资源管理(第二版)》(英文名:Cross—BorderResourceManagement--Second Edition”,由荷兰Elsevier出版社于2012年出版;网络版:http://gffzz9a2937bbd76e4fd3houpwvxn6cuuk699w.ffgz.tsg.suse.edu.cn/science/bookseries/14748177/10)是一本系统阐述在跨边界地区或是边界过渡地区对自然与环境资源如何有效管理的学术专著。在跨边界地区,政府行为和管理手段是复杂的,司法权通常受制于两个或以上的独立政权或行政/军事势力影响。Guo Changlei Faith K.S. Chan 2013地理学报2013,68,6:0
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