|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Formations of groundwater hydrogeochemistry in a karst system during storm events as revealed by PCA显示文摘High-frequency samples have been collected at Jiangjia Spring, the outlet of Qingmuguan underground river system (QURS) in Chongqing in late April, 2008. The variations of hydrogeochemical compositions are found responding rapidly to storm events. Principal component analysis (PCA) of the 20 variables is employed to interpret the relationships with specific processes that control the groundwater hydrogeochemical formations. Through PCA, 84.961% of the total amount information is extracted to indicate the formations of groundwater hydrogeochemical features in QURS during storm events. The first component separates the soil erosion (i.e., increases in turbidity and concentrations of Al3+, TFe, TMn, Ba2+ and NO2?), and dilution effect (i.e., decreases in specific conductance and concentrations of HCO3?, Ca2+ and Sr2+), accounting for 41.495% of the variability in the data. The second component indicates residual fertilizers and duck’s waste from farmlands (i.e., increases in specific conductance and concentrations of Na+, NO3-, PO43-,K+and Cl-), contributing to 37.449%. The dissolution of dolomite and dolomitic limestone makes up 6.017%. During the first rainfall event, the groundwater quality is mainly affected by residual fertilizers and duck’s waste from farmlands, whereas in the second rainfall event, it is mainly affected by increased turbidity and ionic concentrations caused by soil erosion. | YANG PingHeng YUAN DaoXian YUAN WenHao KUANG YingLun JIA Peng HE QiuFang | 2010 | Chinese Science Bulletin2010，55，14： | 14 |
| 2 | Hydrolysis kinetics and antioxidant activity of collagen under simulated gastrointestinal digestion显示文摘 | LIANG Qiufang WANG Lin HE Yuanqing | 2014 | Journal of Functional Foods2014，11，： | 1 |
| 3 | Distributed Protection for Smart Substations Based on Multiple Overlapping Units显示文摘Taking advantage of the information sharing mechanism in smart substations,a distributed protection based on multiple overlapping units is introduced in this paper.The area division and the construction of protection units are studied based on the principle of differential protection.Mutual perception and information interaction among units,calculation with multisource information and coordinated protection schemes are proposed to improve the reliability and adaptability of the substation protection system.A multi agent system(MAS)approach is used to model the units’working process in various situations,such as communication failure and sampled data failure.Test results demonstrate that the method can accelerate the backup protection as well as reduce the power-off range. | Jinghan He Ziqi Wang Qiufang Zhang Lin Liu Dahai Zhang Peter A Crossley | 2016 | CSEE Journal of Power and Energy Systems2016，2，4： | 1 |
| 4 | Influence of CO_(2)/HCO_(3)^(-) on Microbial Communities in Two Karst Caves with High CO_(2)显示文摘There is limited knowledge about microbial communities and their ecological functions in karst caves with high CO_(2)concentrations.Here,we studied the microbial community compositions and functions in Shuiming Cave( 'SMC',CO_(2)concentration 3 303 ppm) and Xueyu Cave( 'XYC',CO_(2)concentration 8 753 ppm) using Illumina MiSeq high-throughput sequencing in combination with BIOLOG test.The results showed that Proteobacteria,Actinobacteria and Bacteroidetes were dominant phyla in these two caves,and Thaumarchaeota was the most abundant in the rock wall samples of SMC.The microbial diversity in the water samples decreased with increasing HCO_(3)^(-)concentration,and it was higher in XYC than that in SMC.The microbial community structures in the sediment and rock wall samples were quite different between the two caves.High concentrations of CO_(2)can reduce the microbial diversity on the rock walls in karst caves,probably through changing microbial preference for different types of carbon sources and decreasing the microbial utilization rate of carbon sources.These results expanded our understanding of microbial community and its response to environments in karst caves with high CO_(2). | Jiyu Chen Qiang Li Qiufang He Heinz C.Schroder Zujun Lu Daoxian Yuan | 2023 | Journal of Earth Science2023，34，1： | 0 |
| 5 | The Formation Mechanism of Hydrogeochemical Features in a Karst System During Storm Events as Revealed by Principal Component Analysis显示文摘The hydrogeochemical parameters of Jiangjia Spring,the outlet of Qingrnuguan underground river system(QURS) in Chongqing,were found responding rapidly to storm events in late April,2008.A total of 20 kinds of hydrogeochemical parameters,including discharge,specific conductance,pH,water tempera- | Pingheng Yang Daoxian Yuan Kuang Yinglun,Wenhao Yuan,Peng Jia,Qiufang He 1.School of Geographical Sciences,Southwest University,Chongqing 400715,China. 2.Laboratory of Geochemistry and Isotope,Southwest University,Chongqing 400715,China 3.The Karst Dynamics Laboratory,Ministry of Land and Resources,Institute of Karst Geology,Chinese Academy of Geological Sciences,Guilin 541004,China | 2009 | 地学前缘2009，16，S1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员