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| 1 | Preliminary report on methane emissions from the Three Gorges Reservoir in the summer drainage period显示文摘Recently reported summertime methane (CH4) emissions (6.7 ± 13.3 mg CH4/(m2·hr)) from newly created marshes in the drawdown area of the Three Gorges Reservoir (TGR), China have triggered broad concern in academic circles and among the public. The CH4 emissions from TGR water surfaces and drawdown areas were monitored from 3rd June to 16th October 2010 with floating and static chambers and gas chromatography. The average CH4 emission flux from permanently flooded areas in Zigui, Wushan and Yunyang Counties was (0.33 ± 0.09) mg CH4/(m2·hr). In half of these hottest months of the year, the wilderness, cropland and deforested drawdown sites were aerobic and located above water level, and the CH4 emissions were very small, ranging from a sink at 0.12 mg CH4/(m2·hr) to a source at 0.08 mg CH4/(m2·hr) except for one mud-covered site after flood. Mean CH4 emission in flooded drawdown sites was 0.34 mg CH4/(m2·hr). The emissions from the rice paddy sites in the drawdown area were averaged at (4.86 ± 2.31) mg CH4/(m2·hr). Excepting the rice-paddy sites, these results show much lower emission levels than previously reported. Our results indicated considerable spatial and temporal variation in CH4 emissions from the TGR. Human activities and occasional events, such as flood, may also affect emission levels. Long-term CH4 measurements and modeling in a large region are necessary to accurately estimate greenhouse gas emissions from the TGR. | Fei Lu Le Yang Xiaoke Wang Xiaonan Duan Yujing Mu Wenzhi Song Feixiang Zheng Junfeng Niu Lei Tong Hua Zheng Yongjuan Zhou Jiangxiao Qiu Zhiyun Ouyang | 2011 | Journal of Environmental Sciences2011，23，12： | 13 |
| 2 | Effects of elevated ozone on growth and yield of field-grown rice in Yangtze River Delta,China显示文摘与在 Yangtze 三角洲的快速的工业化和都市化,中国,球的臭氧集中增加了到导致的层次的对流收割收获损失。瑞斯,在中国的广泛地成年的庄稼,在建立地的、开顶的房间被调查。四个处理被使用:过滤炭的空气(CF ) , non-charcoal-filtered 空气(NF ) ,和有另外的臭氧(O3-1 和 O3-2 ) 的二个层次的过滤炭的空气。AOT40s (在 40 ppbv 上面的积累的时时吝啬的臭氧集中) 分别地是为 CF, NF, O3-1,和 O3-2 的处理的 0, 0.91, 23.24,和 39.28 ppmv · h。米饭高度和生物资源在提高的臭氧集中被减少。显著地在提高的臭氧下面划分到根的更少的有机物减少了米饭根活动。收获损失分别地在 O3-1 和 O3-2 暴露下面是 14.3% 和 20.2% 。这被减小大部分每圆锥花序在粒重引起。 | CHEN Zhan WANG Xiaoke FENG Zhaozhong ZHENG Feixiang DUAN Xiaonan YANG Wenrui | 2008 | Journal of Environmental Sciences2008，20，3： | 10 |
| 3 | Spatial and seasonal variability of CO_2 flux at the air-water interface of the Three Gorges Reservoir显示文摘Difusive carbon dioxide(CO2) emissions from the water surface of the Three Gorges Reservoir, currently the largest hydroelectric reservoir in the world, were measured using floating static chambers over the course of a yearlong survey. The results showed that the average annual CO2 flux was(163.3 ± 117.4) mg CO2/(m2·hr) at the reservoir surface, which was larger than the CO2 flux in most boreal and temperate reservoirs but lower than that in tropical reservoirs. Significant spatial variations in CO2 flux were observed at four measured sites, with the largest flux measured at Wushan(221.9 mg CO2/(m2·hr)) and the smallest flux measured at Zigui(88.6 mg CO2/(m2·hr)); these diferences were probably related to the average water velocities at diferent sites. Seasonal variations in CO2 flux were also observed at four sites, starting to increase in January, continuously rising until peaking in the summer(June-August) and gradually decreasing thereafter. Seasonal variations in CO2 flux could reflect seasonal dynamics in pH, water velocity,and temperature. Since the spatial and temporal variations in CO2 flux were significant and dependent on multiple physical, chemical,and hydrological factors, it is suggested that long-term measurements should be made on a large spatial scale to assess the climatic influence of hydropower in China, as well as the rest of the world. | Le Yang Fei Lu Xiaoke Wang Xiaonan Duan Lei Tong Zhiyun Ouyang Hepeng Li | 2013 | Journal of Environmental Sciences2013，25，11： | 7 |
| 4 | A Model-Embedded Trend Test with Incorporating Hardy-Weinberg Equilibrium Information显示文摘The genetic models are greatly important in the analysis of genetic epidemiologic studies and many of the studies are conducted using the trend test under the additive model. However, for many complex diseases and traits, the underlying genetic model for a genetic locus is usually uncertain. So a robust test free of genetic model is appropriate. In this paper, the authors propose a model-embedded trend test by incorporating Hardy-Weinberg equilibrium information and obtain the explicit formula to calculate its statistical significance. Extensive simulation studies show the proposed test is more robust than the existing procedures. Finally, a real application is further analyzed to show the performance of the proposed test. | HU Xiaonan DUAN Xiaogang PAN Dongdong ZHANG Sanguo LI Qizhai | 2017 | Journal of Systems Science & Complexity2017，30，1： | 3 |
| 5 | Primary evaluation of carbon sequestration potential of wetlands in China显示文摘 | DUAN Xiaonan WANG Xiaoke FEI Lu | 2008 | Aeta Eeologiea Siniea2008，28，2： | 1 |
| 6 | Impact of Elevated O3 on Soil Microbial Community Function Under Wheat Crop显示文摘 | Zhan Chen Xiaoke Wang Zhaozhong Feng Qin Xiao Xiaonan Duan | 2009 | Water Air and Soil Pollution (-)2009，，1： | 1 |
| 7 | Thixotropy of Mg-Al-layered double hydroxides/kaolin- ite dispersion显示文摘 | DAI Xiaonan HOU Wanguo DUAN Hongdong | 2007 | Colloids and Surfaces A2007，295，3： | 1 |
| 8 | Primary evaluation of carbon sequestration potential of wetlands in China显示文摘 | Duan Xiaonan Wang Xiaoke Fei Lu Ouyang Zhiyun | 2008 | Acta Ecologica Sinica2008，，2： | 1 |
| 9 | Seasonal and diurnal variations in methane emissions from Wuliangsu Lake in arid regions of China显示文摘 | Duan Xiaonan Wang Xiaoke Mu Yuing | 2005 | Atmospheric Enviromnent2005，39，25： | 1 |
| 10 | Primary Evaluation of Carbon Sequestration Poten- tial of Wetlands in China 显示文摘 | Duan Xiaonan Wang Xiaoke Fei Lu Ouyang Zhiyun | 2008 | Acta Ecologica Sinica2008，28，2： | 1 |
| 11 | Primary evaluation of carbon sequestration potential of wetlands in China显示文摘 | Duan Xiaonan Wang Xiaoke Fei Lu Ouyang Zhiyun | 2008 | Acta Ecologica Sinica2008，，2： | 1 |
| 12 | Influence of Common Reed (Phragmites australis) on CH4 Production and Transport in Wetlands: Results from Single-Plant Laboratory Experiments显示文摘 | Xiaonan Duan Xiaoke Wang Zhiyun Ouyang | 2009 | 2009 (1-4)2009，，1： | 1 |
| 13 | Displacement and force analyses of piles in the pile-caisson composite structure under eccentric inclined loading considering different stratum features显示文摘A novel anchorage for long-span suspension bridges,called pile-caisson composite structures,was recently proposed by the authors in an attempt to reduce the construction period and costs.This study aims to investigate the displacement and force behavior of piles in a pile-caisson composite structure under eccentric inclined loading considering different stratum features.To this end,both 1g model tests and three-dimensional numerical simulations were performed.Two groups of 1g model tests were used to validate the finite-element(FE)method.Parametric studies were then performed to investigate the effects of groundwater level,burial depth of the pile-caisson composite structure,and distribution of soil layers on the performance of the pile-caisson composite structure.The numerical analyses indicated that the influence of the groundwater level on the stability of the caisson was much greater than that of the piles.In addition,increasing the burial depth of the pile-caisson composite structure can assist in reducing the displacements and improving the stability of the pile-caisson composite structure.In addition,the distribution of soil layers can significantly affect the stability of the pile-caisson composite structure,especially the soil layer around the caisson. | Xiaoqing ZHAO Jinchang WANG Panpan GUO Xiaonan GONG Yongle DUAN | 2023 | Frontiers of Structural and Civil Engineering2023，17，10： | 0 |
| 14 | An efficient method for enhancing adhesion and uniformity of Al_(2)O_(3) coatings on nickel micro-foam used in micropacked beds显示文摘Methods of coating Al_(2)O_(3) on nickel micro-foam were compared and screened,aiming to overcome the capillary force and prepare the micro-foam monolithic catalyst coatings.The surface of micro-foam substrate was pretreated by a chemical etching method to improve the adhesion of the coatings on the substrate.The results showed that the slurry circulation at 162 ml·min^(-1) was evaluated as the optimal method.The pore size on the substrate surface can be controlled by changing the pretreatment conditions.An empirical correlation was also proposed,showing an excellent practicality for predicting the pore size.The adhesion of the coatings with substrate pretreatment was significantly better than that without substrate pretreatment.The minimum value of mass loss after ultrasonic vibration was 3.9%.This mainly attributes to the squeezing of Al_(2)O_(3) particles in the pores of substrate surface.The coatings on nickel micro-foam are hopefully used in micropacked beds for catalytic reactions. | Chi Ma Le Sang Xiaonan Duan Jiabin Yin Jisong Zhang | 2021 | Chinese Journal of Chemical Engineering2021，34，11： | 0 |
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