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| 1 | The First Stegosaur (Dinosauria, Ornithischia) from the Upper Jurassic Shishugou Formation of Xinjiang, China显示文摘新 stegosaur 种, Jiangjunosaurus junggarensis,情报。et sp。nov,基于在 Junggar 盆从 ShishugouFormation 的上面的侏罗记上面的节收集的一个标本被树立, Xinjiang,中国。它从 Jurassicof Xinjiang 代表第一 stegosaur 并且在 Shishugou 形成增加恐龙动物志的差异。新类被对称、按比例宽的牙齿王冠描绘,亚 rectangular 在侧面的看法看见的轴的神经脊骨,和 cervicalcentra 的侧面的表面上的大洞。初步的特性分析建议那这新税在上更多比中间的侏罗记 stegosaur Huayangosaurus 被导出但是比大多数另外的已知的 stegosaur 种类更原始。 | JIA Chengkai Catherine A. FOSTER XU Xing James M. CLARK | 2007 | Acta Geologica Sinica(English Edition)2007,81,3: | 6 |
| 2 | New Early Cretaceous Pterosaur-Bird Track Assemblage from Xinjiang, China:Palaeoethology and Palaeoenvironment显示文摘A pterosaur-bird track assemblage from a sandstone-siltstone-mudstone sequence of the Lower Cretaceous Tugulu Group of Xinjiang comprises the first pterosaur track record from this province and the largest specimen thus far known from China.The pterosaur tracks are assigned to the ichnogenus Pteraichnus based on the triangular overall-shape,the four elongate digit traces and the robust manual digit trace III.Supposed trackmakers were dsungaripterid pterodactyloids whose skeletal remains are well known from the Tugulu Group.The bird tracks that occur on the same surface,are those of typical shorebirds,known from different other localities in southeast Asia.The congruence with Koreanaornis dodsoni described from the same stratigraphic level justifies an assignment to this ichnospecies.This is a further evidence of the co-occurrence of pterosaurs and birds in a typical lakeshore environment with possible seasonal alteration of water supply and aerial exposure indicated by wave ripples,mudcracks and repeated cycles of coarse to fine sediment.Pterosaurs and birds frequented the shoreline and may have fed also on the numerous invertebrates such as the Scoyenia tracemaker that left abundant burrows. | HE Qing XING Lida ZHANG Jianping Martin G.LOCKLEY Hendrik KLEIN W.Scott PERSONS IV QI Liqi JIA Chengkai | 2013 | Acta Geologica Sinica(English Edition)2013,87,6: | 4 |
| 3 | Markerless human motion capture by Markov random field and dynamic graph cuts with color constraints显示文摘Currently,many vision-based motion capture systems require passive markers attached to key loca-tions on the human body. However,such systems are intrusive with limited application. The algorithm that we use for human motion capture in this paper is based on Markov random field (MRF) and dynamic graph cuts. It takes full account of the impact of 3D reconstruction error and integrates human motion capture and 3D reconstruction into MRF-MAP framework. For more accurate and robust performance,we extend our algorithm by incorporating color constraints into the pose estimation process. The ad-vantages of incorporating color constraints are demonstrated by experimental results on several video sequences. | LI Jia WAN ChengKai ZHANG DianYong MIAO ZhenJiang YUAN BaoZong | 2009 | Science in China(Series F)2009,52,2: | 2 |
| 4 | Bilayer Structured Nanowire-array and Nanotube-cluster TiO2 Photoanode for Efficient Dye-sensitized Solar Cells显示文摘 | YU Jun ZHANG Chengkai ZHUANG Jia QIN Haiyang HE Quangui LIANG Qiumei | 2015 | Chemical Research in Chinese Universities2015,31,3: | 0 |
| 5 | Chalcogen-dependent catalytic properties of RuX2 (X = S/Se/Te) nanoparticles decorated carbon nanofibers for hydrogen evolution in acidic and alkaline media显示文摘Transition metal dichalcogenides(TMDs),with the general formula MX_(2)(M=Mo/W/Fe/Co/Ni,etc.;X=S/Se/Te),have attracted extensive research interests for hydrogen evolution reaction(HER).Compared with numerous studies on noble-metal-free TMDs,the chalcogen-dependent HER catalytic properties of noble-metal-based TMDs are lack of sufficient research attention.Herein,a facile electrospinning-assisted synthetic strategy is proposed to synthesize ruthenium dichalcogenides(RuX_(2),X=S/Se/Te)nanoparticles decorated carbon nanofibers(CNFs).Benefiting from the identical nanofibrous morphology and exposed crystal planes of RuX_(2)(111),the catalytic activities of RuX_(2)@CNFs samples were investigated and compared in a fair and direct manner.Detailed electrochemical measurements coupled with density functional theory calculations were carried out to probe their intrinsic HER catalytic activities,resulting in the catalytic activity order of RuS_(2)@CNFs>RuSe_(2)@CNFs>RuTe_(2)@CNFs in acidic media and that of RuS_(2)@CNFs>RuTe_(2)@CNFs>RuSe_(2)@CNFs in alkaline media.The superior catalytic performance of RuS_(2)@CNFs mainly stems from the relative lower HER energy barriers and thereby the higher intrinsic catalytic activity of RuS_(2)(111),leading to ultralow overpotentials of 44 and 9 mV at 10 mA·cm^(-2) in acidic and alkaline media,respectively.RuSe_(2)(111)is endowed with the more optimized Gibbs free energy of hydrogen adsorption(ΔGH*)than RuTe_(2)(111),but RuTe_(2)(111)shows enhanced catalytic property for H_(2)O dissociation and OH-desorption than RuSe_(2)(111),therefore,resulting in the altered catalytic activity sequences for RuSe_(2) and RuTe_(2) in acidic and alkaline media. | Chengkai He Yue Wei Jia Xu Yujie Wei Tao Wang Rongfei Liu Lvlv Ji Zhun Liu Sheng Wang | 2024 | Nano Research2024,17,4: | 0 |