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| 1 | Eutrophication Evaluation of Water Body at Huailai Section of the Yongding River显示文摘In order to understand the water pollution characteristics in Huailai section of the Yongding River,the monitoring from November of 2016 to October of 2017 was conducted. 6 sampling points were selected for monitoring 6 indicators,and the temporal-spatial variation characteristics of nitrogen and phosphorus in the river were explored. Moreover,the ratio of nitrogen to phosphorus and an exponential universal formula of power function in logarithmic form were used to analyze temporal-spatial variation rules of nitrogen and phosphorus in water,assess the degree of eutrophication,and analyze eutrophication risk. The results showed that water pollution in Huailai section of the Yongding River was more serious. TN was13. 25 times of concentration limit of class III water in the dividing of surface water environment function area in the ' 13 thFive-year' Development Planning' of National Environmental Protection Standard. ON and NO-3-N were the main forms of TN,while mean value of TP was 0. 64 mg/L,and each index had the characteristics of agricultural non-point source pollution. The temporal-spatial distribution characteristics of nitrogen and phosphorus in the water body was obvious. At the time scale,the concentrations of nitrogen and phosphorus in the water body showed seasonal variation; at the space scale,the distribution of nitrogen and phosphorus in the water body was similar. The annual average ratio of nitrogen and phosphorus in Huailai section of the Yongding River was 32. 78,and the phytoplankton was in the overall state of phosphorus limitation. During the flat water period,phosphorus was the limiting nutrient element,and the ratio of nitrogen and phosphorus in the dry period and the abundant water period was suitable for the growth and reproduction of algae. The temporal-spatial variation of water body in Huailai section of the Yongding River was mostly in the ' eutrophication' stage. The maximum EI value was 228. 11 in dry season,and the lowest was 213. 06 in flood season,while it was218. 30 in flat water period. The fluvial dynamics process in Huailai section of the Yongding River was good,and the flow pattern of the river was continuous. The flow velocity of the main stream was 0. 43-1. 45 m/s,which was much larger than that of the algal bloom. The risk of cyanobacteria blooms in the main stream was low. | Zhao Jianguo Li Hongbo Liu Cunqi Li Xiaoyu Chen Xinyong Yan Donghua Luo Ning | 2018 | Meteorological and Environmental Research2018，9，6： | 3 |
| 2 | bowuguan-fei-wuzhi wenhua yichan baohu de jianshi pingtai-Fujian bowuyuan guanyu feiwuzhi wenhua yichan baohu gongzuo de shijian,(Museum-Solid Plat-form for Intangible Cultural Heritage Protection-the Practice of Intangible Cultural Heritage Protec-tion b显示文摘 | Mei Huaquan Lin Cunqi | | 0，，01： | 1 |
| 3 | Seasonal variations of phytoplankton community structure in relation to physico-chemical factors in Lake Baiyangdian, China显示文摘 | Cunqi Liu Lusan Liu Huitao Shen | 2010 | Procedia Environmental Sciences2010，，： | 1 |
| 4 | Seasonal variations of phytoplankton community structure in relation to physico-chemical factors in Lake Baiyangdian, China 显示文摘 | LIU Cunqi LIU Lusan SHEN Huitao | 2010 | Procedia Environmental Sciences2010，2，： | 1 |
| 5 | Quantifying multiple social relationships based on a multiplex stochastic block model显示文摘Online social networks have attracted great attention recently, because they make it easy to build social connections for people all over the world. However, the observed structure of an online social network is always the aggregation of multiple social relationships. Thus, it is of great importance for real-world networks to reconstruct the full network structure using limited observations. The multiplex stochastic block model is introduced to describe multiple social ties, where different layers correspond to different attributes(e.g., age and gender of users in a social network). In this letter, we aim to improve the model precision using maximum likelihood estimation, where the precision is defined by the cross entropy of parameters between the data and model. Within this framework, the layers and partitions of nodes in a multiplex network are determined by natural node annotations, and the aggregate of the multiplex network is available. Because the original multiplex network has a high degree of freedom, we add an independent functional layer to cover it, and theoretically provide the optimal block number of the added layer.Empirical results verify the effectiveness of the proposed method using four measures, i.e., error of link probability,cross entropy, area under the receiver operating characteristic curve, and Bayes factor. | Mincheng WU Zhen LI Cunqi SHAO Shibo HE | 2021 | Frontiers of Information Technology & Electronic Engineering2021，22，11： | 0 |
| 6 | Effects of Main Climatic Factors on Plant Community Characteristics of a Meadow Steppe Under Different Grazing Intensities显示文摘This experiment studies the influence of main climatic factors on the structure of grassland plant community under different grazing intensities, determines the influence of climatic factors on the quantitative characteristics of meadow steppe community structure changes, and explores the response and adaptation of meadow steppe biodiversity and ecosystem functions to climate changes, so as to provide a reference and basis for rational utilization and management of natural grassland and prediction of development trend of meadow steppe under global climate changes. The results showed that the correlations between grassland community characteristic index and different climatic factors were significantly different under different grazing intensities. The average temperature and annual precipitation in the critical period were the main climatic factors affecting the changes in meadow steppe community characteristics, and the sensitivity of community indexes to the changes in average temperature of the critical period was greater than that to the changes in annual precipitation. The aboveground biomass of zero grazing and moderate grading was positively correlated with the average temperature and annual precipitation during the critical period, and the correlations between aboveground biomass and environmental factors were no significant under heavy grazing. | ZHAO Jianguo LIU Cunqi LI Hongbo LUO Ning MENG Shujin ZHANG Zhihui WANG Jianghua | 2019 | Journal of Landscape Research2019，11，2： | 0 |
| 7 | A pH Sensitive Fluorescence Probe Based on Tricarbocyanine显示文摘Medical imaging technologies consist of X-ray imagingtechnology, computed tomography(CT), positron emissioncomputed tomography(PET), ultrasound imaging(USG), mag-netic resonance imaging(MRI) and optical imaging(OI)ill. Theyplay an increasingly important role in diagnosis of disease anddrag research. | YAN Luomei ZHOU Hua WU Cunqi WANG Lidan YANG Wei JIN Manyu ZHAO Yongxia XU Jingwei | 2016 | Chemical Research in Chinese Universities2016，32，6： | 0 |
| 8 | A comparative study on the contents of vitamins in the natural and the cultured prawn显示文摘Acomparativestudyonthecontentsofvitaminsinthenaturalandtheculturedprawn￥WangAnli;WangWeina;LiuCunqiandWangSuo'an(ReceivedFebr... | Wang Anli Wang Weina Liu Cunqi and Wang Suo’an Department of Biology, Hebei University, Baoding 071002, China) | 1994 | Acta Oceanologica Sinica1994，13，4： | 0 |
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