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1Grain-size reduction of feldspar and flow of deformed granites within the Gaoligong shear zone, southwestern Yunnan, China显示文摘Mineral deformation and rock flow mechanism in the lithosphere are related to the rheological behavior and weakening mechanism of the continent. Natural deformation behaviors of feldspars are not well understood due to the complexity of their mineral compositions, crystal structures, as well as changing deformation conditions. The refined microstructure,fabric and composition of major minerals in the deformed granitic rocks within the Gaoligong shear zone(GLGSZ), southwestern Yunnan, China, were studied. With increasing mylonitization, two fabric types of end-members have been distinguished(type-I banded granitic mylonite and type-II banded ultramylonite). The two types of deformed granitic rocks have the same mineral assemblage, but different mineral modes. The type-I banded granitic mylonite has a greater proportion of K-feldspar(mostly present as porphyroclasts)>plagioclase>quartz±biotite, however, the type-II banded ultramylonite has a greater proportion of fine-grained plagioclase>K-feldspar>quartz±biotite. The crystallographic preferred orientation(CPO) patterns of quartz combined with two-feldspar geothermometer, confirm that the quartz grains in the type-I and type-II granitic rock have undergone high-temperature dislocation creep deformation. The K-feldspar grains in the matrix of type-II banded ultramylonite show a dominant(100)[010] slip system with dislocation creep recrystallization, while the fine-grained plagioclase grains present a weak CPO pattern with superplastic flow. The K-feldspar porphyroclasts show grain-size reduction associated with mineral composition and fabric transformation. The myrmekite formation with the fine-grained neocrystallization of plagioclase and quartz significally replaced the K-feldspar porphyroclasts. Finally, the fine-grained neocrystallization plagioclases were formed further into the high strain localized ultramylonites with superplastic flow.Yanlong DONG Shuyun CAO Xuemei CHENG Junlai LIU Hanchen CAO 2019Science China Earth Sciences2019,62,9:6
2桌面环境下拼贴显示的自动对准(英文)显示文摘通过拼贴一组投影仪来构建高分辨率显示系统已成为现在一个较实际的办法.但是,这样的高分辨率显示系统用途有限,因为它们需要在定制的并行机或个人计算机集群上运行一些专门开发的并行形象化程序才能实现.针对个人计算机桌面环境下的任意拼贴显示给出了一种自动对准机制,使得桌面用户可以在其上运行普通的桌面应用软件.该系统包括3个步骤:检测投影仪对齐失准,计算出纠正所需之变换,对桌面环境进行实时的变形.这样就允许用户在运行任何2D,3D或视频程序时无须作任何修改,也无须使用专门的硬件支持.实验结果表明,系统能够获得亚像素级的精度,并且能在系统性能衰减最小的情况下达到实时变形.GrantWallace HanChen KaiLi 2004软件学报2004,15,12:4
3A distributed approach for lidar-based relative state estimation of multi-UAV in GPS-denied environments显示文摘In this paper,we present a distributed framework for the lidar-based relative state estimator which achieves highly accurate,real-time trajectory estimation of multiple Unmanned Aerial Vehicles(UAVs)in GPS-denied environments.The system builds atop a factor graph,and only on-board sensors and computing power are utilized.Benefiting from the keyframe strategy,each UAV performs relative state estimation individually and broadcasts very partial information without exchanging raw data.The complete system runs in real-time and is evaluated with three experiments in different environments.Experimental results show that the proposed distributed approach offers comparable performance with a centralized method in terms of accuracy and real-time performance.The flight test demonstrates that the proposed relative state estimation framework is able to be used for aggressive flights over 5 m/s.Hongming SHEN Qun ZONG Hanchen LU Xuewei ZHANG Bailing TIAN Lei HE 2022Chinese Journal of Aeronautics2022,35,1:3
4Engineering practice and economic analysis of ozone oxidation wet denitrification technology显示文摘SO_(2)and NO emitted from coal-fired power plants have caused serious air pollution in China.In this study,a test system for NO oxidation using O_(3)is established.The basic characteristics of NO oxidation and products forms are studied.A separate test system for the combined removal of SO_(2)and NO_(x)is also established,and the absorption characteristics of NO_(x)are studied.The characteristics of NO oxidation and NO_(x)absorption were verified in a 35 t·h^(-1)industrial boiler wet combined desulfurization and denitrification project.The operating economy of ozone oxidation wet denitrification technology is analyzed.The results show that O_(3)has a high rate and strong selectivity for NO oxidation.When O_(3)is insufficient,the primary oxidation product is NO_(2).When O_(3)is present in excess,NO_(2)continues to get oxidized to N_(2)O_(5)or NO_(3).The removal efficiency of NO_(2)in alkaline absorption system is low(only about 15%).NOx removal efficiency can be improved by oxidizing NO_(x)to N_(2)O_(5)or NO_(3)by increasing ozone ratio.When the molar ratio of O_(3)/NO is 1.77,the NOx removal efficiency reaches 90.3%,while the operating cost of removing NO_(x)per kilogram is 6.06 USD(NO_(2)).Yang Li Defu Che Chenglong Yang Mingyu Yao Tingwen Zhao Kangli Fu Hanchen Zhao 2021Chinese Journal of Chemical Engineering2021,34,1:3
5东亚地区土壤湿度次季节-季节模式预测技巧评估(英文)显示文摘利用次季节-季节(S2S)预测计划的五个数值模式历史回报,评估了东亚5~9月土壤湿度的模式预测技巧。发现在中国南方和东北,多数S2S模式对土壤湿度的有效预测可提前5~10天;在我国青藏高原和西北地区,仅有欧洲中心模式的有效预测能提前20天左右。一般来说,土壤湿润区的预测技巧好于干燥区,多数模式在9月的预测技巧高于其余月份。然而,模式间的预测技巧还存在较大的差异。此外,厄尔尼诺-南方涛动对土壤湿度的S2S技巧也具有一定的影响,当发生厄尔尼诺(拉尼娜)事件时,我国东部的土壤湿度预测技巧偏高(低)。与大气变量相比,土壤湿度的预测技巧明显偏低,说明陆面过程的次季节预测还有待进一步的提高。ZHU Hanchen CHEN Haishan ZHOU Yang DONG Xuan 2019Atmospheric and Oceanic Science Letters2019,12,6:3
6A first-principles study of dihydroazulene as a possible optical molecular switch显示文摘By applying nonequilibrium Green's function formalism combined with first-principles density functional theory, we investigate the electronic transport properties of the dihydroazulene optical molecular switch. Three kinds of adsorption sites including the hollow, bridge and top sites are studied. The two forms of this molecule, namely the open form and the closed form, can reversibly switch from each other upon photoexcitation. Their transmission spectra are remarkably distinctive. Theoretical results show that the current of the closed form is always significantly larger than that of the open form for all three adsorption sites, which promises this system as possibly one of the good candidates for optical switches due to its unique advantage, and which may have some potential applications in the future molecular circuit.XIA CaiJuan LIU DeSheng LIU HanChen 2011Science China(Physics,Mechanics & Astronomy)2011,54,3:2
7Scaling diode-pumped, high energy picosecond lasers to kilowatt average powers显示文摘Recent results in the development of diode-driven high energy, high repetition rate, picosecond lasers, including the demonstration of a cryogenic Yb:YAG active mirror amplifier that produces 1.5 J pulses at 500 Hz repetition rate(0.75 kW average power) are reviewed. These pulses are compressed resulting in the generation of ~5 ps duration,1 J pulses with 0.5 kW average power. A full characterization of this high power cryogenic amplifier, including atwavelength interferometry of the active region under >1 kW average power pump conditions, is presented. An initial demonstration of operation at 1 kW average power(1 J, 1 k Hz) is reported.Brendan A.Reagan Cory Baumgarten Elzbieta Jankowska Han Chi Herman Bravo Kristian Dehne Michael Pedicone Liang Yin Hanchen Wang Carmen S.Menoni Jorge J.Rocca 2018High Power Laser Science and Engineering2018,6,1:2
8The micro- structure and mechanical properties of tluxless gas tungsten arc: welding-brazing joints made between titanium and aluminum alloys 显示文摘Ma Zhipeng Wang Changwen Yu Hanchen 2013Materials and Design2013,,45:1
9Ein neuer and fundamentaler versuch zur totalreflexion 显示文摘GOOS F HANCHEN H 1947Annals of Physics1947,436,7:1
10Spontaneous expression of embryonic factors and P53 point mutations in aged mesenchymal stem cells: a model of age-related tumorigenesis in mice 显示文摘Li Hanchen Fan Xueli Kovi RC 2007Cancer Res2007,67,10:1
11Neumessung des strahlversetzungs effektes bci totalreflexion 显示文摘GOOS F HANCHEN H 1949Annals of Physics1949,440,3:1
12Ein neuer and fundamentaler Versuch zur Totalreflexion显示文摘Goos F Hanchen H 1947Ann Phys1947,1,6:1
13Neumessang des Strahlversetzungeffkets bei Totalreflexion显示文摘Goos F Hanchen H 1949Ann Phys1949,5,3:1
14Ein neuer und fundamentaler Versuch zur Totalreflexion 显示文摘Goos F Hanchen H 1947Annalen der Physik1947,436,7:1
15Lattice Monte Carlo models of thin deposition 显示文摘 Hanchen H Tomas Diaz de la Rubia 2000Thin Solid Films2000,365,:1
16Alanine scan of the peptide antibiotic feglymycin: assessment of amino acid side chains contributing to antimicrobial activity显示文摘Hanchen A Rausch S Landmann B 2013ChemBioChem2013,,:1
17Ein neuer und fundamentaler versuch zur total reflexion 显示文摘Goos F Hanchen H 1947Ann d Phys1947,6,1:1
18Thin film deposition : fundamentals and modeling显示文摘Gilmer G H Hanchen H Christopher R 1998Comp Mat Sci1998,12,:1
19Directional Zernike moments for rotation-free recognition of online sketched symbols显示文摘Zhang Yougen Wu Lingda Song Hanchen 2013Electronics Letters2013,49,16:1
20Ein neuer und funamentaler Versuch zur totalreflexion 显示文摘GOOS F HANCHEN H 1947Ann Phys1947,1,6:1
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