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| 1 | Primary dolostone formation related to mantle-originated exhalative hydrothermal activities,Permian Yuejingou section,Santanghu area, Xinjiang,NW China显示文摘The Permian Lucaogou Formation is an important hydrocarbon source rock in the Junggar, Turpan, and Santanghu basins in Xinjiang, NW China. For the first time, dolostones associated with mantle-originated exhalative hydrothermal fluid flows are discovered in Yuejingou section in the Santanghu Basin area. They include dolomicrite, doloarenite, and a small amount of dolorudite, and are finely (0.05-0.15 cm thick) interlaminated with lime micrite and dolomicritic analcime laminites. Alkali feldspar and analcime grains are common in doloarenite and are interpreted as having been derived from analcime phonolites and peralkaline magmatic rocks. These magmatic fragments were brought up from subsurface by hydrothermal fluid flow and had experienced exhalative brecciation, transport, and deposition on the lake floor. The matrix consists dominantly of dolomite and ankerite smaller than 0.01 mm. The dolostones can be subdivided into four types on the basis of mineral composition and content. The detrital analcime and alkaline feldspar grains and tuff lithics are interpreted as intraclasts, which were deposited in an under-filled starved lake basin. The δ18OPDB values of dolostones are -5‰ to -21.1‰, and -11.9‰ on average; the 87Sr/86Sr ratios of dolostones are 0.70457 to 0.706194, and 0.705005 on average. These values, in combination with evidence of multi-episodes of peralkaline extrusion, suggest a mantle origin of the hydrothermal fluids, which may have promoted primary dolomite formation. The fluid from the upper mantle caused serpentinization of ultramafic rocks that intruded into the lower crust to obtain Mg2+ and Fe2+, and injected the ions into the lake water as the Mg and Fe sources for dolomite and ankerite. Hydro- thermal fluids associated with peralkaline magmatic rocks also provided Ca2+, Mg2+, Fe2+, and CO32-. Explosive breccias formed and dolostones were convoluted near the vent of hydrothermal fluid exhalation, whereas laminated dolostones formed farther away from the vent. The dolostones are primary dolomite deposition in an intracontinental rift basin and associated with mantle-originated hydrothermal fluids. They provide an insight into the origin of dolomite formation in the geologic history and clues to understand the sedimentary environments and tectonic conditions in northern Xinjiang during the late Paleozoic. | LIU YiQun JIAO Xin LI Hong YUAN MingSheng YANG Wan ZHOU XiaoHu LIANG Hao ZHOU DingWu ZHENG ChaoYang SUN Qin WANG ShuangShuang | 2012 | Science China Earth Sciences2012，55，2： | 17 |
| 2 | Interferon-armed RBD dimer enhances the immunogenicity of RBD for sterilizing immunity against SARS-CoV-2显示文摘Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)has caused a global crisis,urgently necessitating the development of safe,efficacious,convenient-to-store,and low-cost vaccine options.A major challenge is that the receptor-binding domain(RBD)-only vaccine fails to trigger long-lasting protective immunity if used alone for vaccination. | Shiyu Sun Yueqi Cai Tian-Zhang Song Yang Pu Lin Cheng Hairong Xu Jing Sun Chaoyang Meng Yifan Lin Haibin Huang Fang Zhao Silin Zhang Yu Gao Jian-Bao Han Xiao-Li Feng Dan-Dan Yu Yalan Zhu Pu Gao Haidong Tang Jincun Zhao Zheng Zhang Jiaming Yang Zhenxiang Hu Yang-Xin Fu Yong-Tang Zheng Hua Peng | 2021 | Cell Research2021，31，9： | 7 |
| 3 | Thermal simulation of the formation and evolution of coalbed gas显示文摘Thermal simulation experiment of gas generation from the peat and the coals were performed using the high temperature and pressure apparatus, at temperature ranging from 336.8-600℃, a pressure of 50MPa and two heating rates of 20℃/h and 2℃/h, and the evolution and formation of coalbed gas components were studied. Results show that for the coals, the gaseous products are mainly composed of hydrocarbon gases. However, for the peat the content of hydrocarbon gases in gaseous products is lower than that of non-hydrocarbon components. In the generated hydrocarbon gases methane is predominant and heavy hydrocarbon gases (C2-5) are present in small amount. Meanwhile, carbon dioxide (CO2) predominates the generated non-hydrocarbon gases, and hydrogen (H2) and sul-furated hydrogen (H2S) are existent in trace amount. It is also observed that temperature is the main factor controlling the evolution of coalbed gas generation. With increasing vitrinite reflectance, methane rapidly increases, CO2 sightly increases, and C2-5 hydrocarbons first increase and then decrease. The peat and Shanxi formation coal have a higher generative potential of coalbed gases than coals and Taiyuan formation coal, respectively, reflecting the effect of the property of organic matter on the characteristics of coalbed gas component generation. In this study, it is found that low heating rate is favorable for the generation of methane, H2 and CO2, and the decomposition of C2-5 hydrocarbons. This shows that heating time plays an important controlling role in the generation and evolution of coalbed gases. The results obtained from the simulation experiment in the study of coalbed gases in natural system are also discussed. | DUAN Yi WU Baoxiang ZHENG Chaoyang WANG Chuanyuan | 2005 | Chinese Science Bulletin2005，50，S1： | 5 |
| 4 | Ecological pressures on grassland ecosystems and their conservation strategies in Northern China显示文摘In this study,we identified ecological pressures on grassland ecosystems and adaptive countermeasures in Northern China.Our research revealed that the main sources of these pressures included population growth,economic development,resources exploitation,and global climate change,with human-related activities being overriding factors.Overgrazing was an important reason for grassland imbalance,causing soil erosion and desertification,especially during the sensitive spring greening phase.In steppe zones,commercial coal mining was destructive to the ecological environment.Regarding long-term strategies,we recommend that policy-makers devote more consideration to a new conceptual approach for transforming grasslands through shifting the focus from die grassland's traditional production functions to meir ecological functions.Applying this concept,adaptive countermeasures should be developed to reduce human impacts based on the environmental capacities of grasslands.Moreover,we recommend the development of environment-friendly industries and reduction of pressures from human activities as effective measures for maintaining the balance between sustainable economic development and grassland conservation.Lastly,we suggest that restoration of degraded grasslands should conform to the principle of natural vegetation to further improve the ecological adaptability of plants and ecosystem stability.This study is expected to provide scientific support for policy-makers engaged in grassland protection. | Zhirong Zheng Chaoyang Feng Shengxing Ye Zhaoyan Diao Shihai Lü | 2015 | Chinese Journal of Population,Resources and Environment2015，13，1： | 4 |
| 5 | Adaptive PMD Compensation in 10 Gbit/s RZ Optical Communication System显示文摘We report an experiment of adaptive compensation for polarization mode dispersion (PMD) in 10Gbit/s return zero (RZ) optical communication system. The quasi-real-time PMD compensation is realized. The algorithm so-called particle swarm optimization (PSO) is used to control feedback compensation system. | Yu Li Zhang Xiaoguang Zhou Guangtao Shen Yu Zheng Yuan Li Chaoyang Liu Yumin Chen Lin Yang Bojun | 2003 | 光学学报2003，23，S1： | 3 |
| 6 | Study on kinetics of hydrocarbon generation from coals in the Qinshui Basin显示文摘A new method for the quantitative assessment of hydrocarbon generation potential from coals by means of the chemical reaction kinetics has been developed gradually over the recent years. In this paper, the kinetic parameters of hydrocarbon gas generation are determined by high tem-perature and pressure, and closed- system thermal simula-tion for Late Paleozoic coals in the Qinshui Basin and the kinetic characteristics and the histories of hydrocarbon gas generation were studied using the parameters obtained. Re-sults show that during the longer period from the Triassic (T) to the Middle Jurassic (J2), the coal-derived methane yield increased more slowly under lower palaeogeotemperature in the Qinshui Basin; however, the shorter period from Late Jurassic to Early Cretaceous, the coal-derived methane yield increased more rapidly under higher palaeogeotemperature. The correlation between the thermal simulation and the fac-tual data shows that C1/ (C1+C2―4) coefficients computed by the histories of methane and C2―C4 hydrocarbon generation can provide evidence for the identification of the genesis of coal bed gas in the different areas of the Qinshui Basin. The kinetic simulating experiment of hydrocarbon generation for the peat considered as the original matter of coal formation was performed for the first time and the simulated results were compared with the characteristics of hydrocarbon gen-eration from coals undergoing various palaeogeotemperature in the Qinshui Basin. The result indicates that the peat has a higher potential of hydrocarbon generation than that of coals. Therefore, the hydrocarbon generation results obtained from kinetic simulation for coal with higher maturation rank could not stand for their original hydrocarbon generation potential and thus would lead to an underestimation for coal-bed gas resource. The generative amount of coal-derived gas in the Qinshui Basin was predicted using kinetic simula-tion results for the peat and their maximum was estimated. The calculation shows that the generative amount of coal-derived gas from Taiyuan Formation and Shanxi For-mation coal-beds in the Qinshui Basin is the highest in Yangcheng area, higher in Qinyuan area and the lowest in Huoshan area. Therefore, the conditions of coal-bed gas gen-eration are the best in Yangcheng area, the second in Qinyuan area and not very good in Huoshan area. | DUAN Yi WU Baoxiang ZHENG Chaoyang WANG Chuanyuan ZHANG Hui TAO Mingxin LIU Jinzhong ZHANG Xiaojun | 2005 | Chinese Science Bulletin2005，50，17： | 3 |
| 7 | Biomarker geochemistry of crude oils from Qaidam Basin, Northwestern China显示文摘 | Duan Yi Zheng Chaoyang Wang Zhiping | 2006 | Petroleum Geology2006，29，2： | 1 |
| 8 | Geochemical study of crude oils from Xifeng Oilfield of Ordos Basin, China 显示文摘 | Duan Yi Wang Chuanyuan Zheng Chaoyang | 2008 | Journal of Asian Earth Sciences2008，31，46： | 1 |
| 9 | Biomarker geo- chemistry of crude oils from the Qaidam basin, NW China显示文摘 | Duan Yi Zheng Chaoyang Wang Zhiping | 2006 | Journal of Petroleum Geology2006，29，2： | 1 |
| 10 | Geochemical study of crude oils from the Xifeng oilfield of the Ordos ba sin,China显示文摘 | Duan Yi Wang Chuanyuan Zheng Chaoyang | 2008 | Journal of Asian Earth Sciences2008，31，46： | 1 |
| 11 | Application of grey relational analysis for corrosion failure of oil tubes显示文摘 | Chaoyang Fu Jiahsen Zheng Jinzhao et | 2001 | Corrosion Science2001，43，5： | 1 |
| 12 | Ap- plication of grey relational analysis for corrosion failure of oil tubes 显示文摘 | Fu Chaoyang Zheng Jiashen Zhao Jingmao | 2001 | Corrosion Science2001，43，5： | 1 |
| 13 | Remote Estimation of Gross Primary Production in Wheat Using Chlorophyll - related Vegetation Indices 显示文摘 | Chaoyang W Zheng N Quan T | 2009 | Agricultural and Forest Meteorology2009，149，： | 1 |
| 14 | Application of grey relational analysis for corrosion failure of oil tubes显示文摘 | Chaoyang Fu Jiashen Zheng Jingmao Zhao | 2001 | Corrosion Science2001，43，5： | 1 |
| 15 | Geochemical study of crude oils from the Xifeng Oilfield of the Ordos Ba-sin,China显示文摘 | Duan Yi Wang Chuanyuan Zheng Chaoyang | 2008 | Journal of Asian Earth Sciences2008，31，46： | 1 |
| 16 | Biomarker geochem- istry of crude oils from Qaidam basin, northwestern China显示文摘 | Duan Yi Zheng Chaoyang Wang Zhiping | 2006 | Journal of Petroleum Geology2006，29，2： | 1 |
| 17 | Geochemical study of crude oils from the Xifeng oilfield of the Ordos ba- sin, China 显示文摘 | Duan Yi Wang Chuanyuan Zheng Chaoyang | 2008 | Joumal of Asian Earth Sciences2008，31，46： | 1 |
| 18 | A robust multisource image automatic registration system based on SIFT descriptor显示文摘 | WANG Li NIU Zheng WU Chaoyang | | 0，，12： | 1 |
| 19 | Application of grey relational analysis for corrosion failure of oil tubes 显示文摘 | Fu Chaoyang Zheng Jiashen Zhao Jingmao et ai | 2001 | Corrosion Science2001，43，： | 1 |
| 20 | A Robust Multi- source Image Automatic Registration System Based on the SIFT Descriptor 显示文摘 | Wang Li Niu Zheng Wu Chaoyang | 2012 | International Journal of Remote Sensing2012，33，12： | 1 |
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