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Li Y.,Sun Yat Sen University | Li Y.,China West Normal University | Zhang Z.,South China Institute of Environmental Sciences | Liu H.,China West Normal University | And 5 more authors.
Environmental Geochemistry and Health | Year: 2015

Twenty trace elements in fine particulate matters (i.e., PM2.5) at urban Chengdu, a southwest megacity of China, were determined to study the characteristics, sources and human health risk of particulate toxic heavy metals. This work mainly focused on eight toxic heavy metal elements (As, Cd, Cr, Cu, Mn, Ni, Pb and Zn). The average concentration of PM2.5 was 165.1 ± 84.7 µg m−3 during the study period, significantly exceeding the National Ambient Air Quality Standard (35 µg m−3 in annual average). The particulate heavy metal pollution was very serious in which Cd and As concentrations in PM2.5 significantly surpassed the WHO standard. The enrichment factor values of heavy metals were typically higher than 10, suggesting that they were mainly influenced by anthropogenic sources. More specifically, the Cr, Mn and Ni were slightly enriched, Cu was highly enriched, while As, Cd, Pb and Zn were severely enriched. The results of correlation analysis showed that Cd may come from metallurgy and mechanical manufacturing emissions, and the other metals were predominately influenced by traffic emissions and coal combustion. The results of health risk assessment indicated that As, Mn and Cd would pose a significant non-carcinogenic health risk to both children and adults, while Cr would cause carcinogenic risk. Other toxic heavy metals were within a safe level. © 2015 Springer Science+Business Media Dordrecht Source


Zheng L.,East China Normal University | Zheng L.,Guangdong Academy of Social Science | Weidong Z.,East China Normal University | Xuchen G.,East China Normal University
Perception | Year: 2015

Aesthetic psychology has discussed many aspects of aesthetic preferences for spatial composition. However, there have been few empirical explorations of the spatial composition of traditional Chinese paintings. The results of this experiment showed that the shape of the frame had a significant effect on aesthetic preferences. Participants preferred to put two figures at certain relative horizontal distances from each other according to the horizontal shape of the frame but may have difficulty in adapting the relative vertical distance according to the vertical shape of the frame. Furthermore, the unique aesthetic interest of traditional Chinese long-vertical scroll paintings was discussed. This discussion revealed that, in a creative way, ancient Chinese artists followed the same aesthetic principles we observed, and they developed the artistic conception and romantic charm of traditional Chinese paintings. © 2015 a pion publication. Source


Li Y.,Sun Yat Sen University | Li Y.,China West Normal University | Zhang Z.,South China Institute of Environmental Sciences | Liu H.,China West Normal University | And 5 more authors.
Environmental Geochemistry and Health | Year: 2016

Twenty trace elements in fine particulate matters (i.e., PM2.5) at urban Chengdu, a southwest megacity of China, were determined to study the characteristics, sources and human health risk of particulate toxic heavy metals. This work mainly focused on eight toxic heavy metal elements (As, Cd, Cr, Cu, Mn, Ni, Pb and Zn). The average concentration of PM2.5 was 165.1 ± 84.7 µg m−3 during the study period, significantly exceeding the National Ambient Air Quality Standard (35 µg m−3 in annual average). The particulate heavy metal pollution was very serious in which Cd and As concentrations in PM2.5 significantly surpassed the WHO standard. The enrichment factor values of heavy metals were typically higher than 10, suggesting that they were mainly influenced by anthropogenic sources. More specifically, the Cr, Mn and Ni were slightly enriched, Cu was highly enriched, while As, Cd, Pb and Zn were severely enriched. The results of correlation analysis showed that Cd may come from metallurgy and mechanical manufacturing emissions, and the other metals were predominately influenced by traffic emissions and coal combustion. The results of health risk assessment indicated that As, Mn and Cd would pose a significant non-carcinogenic health risk to both children and adults, while Cr would cause carcinogenic risk. Other toxic heavy metals were within a safe level. © 2015, Springer Science+Business Media Dordrecht. Source


Li Y.,Guangdong Academy of Social Science
International Journal of Innovation and Sustainable Development | Year: 2014

Nowadays, corporate social responsibility (CSR) is attracting nationwide attention. The wave of CSR development in China was first fostered by the development of industry chain in western countries and now displays a new trend in its development. This paper explores and analyses the latest development of CSR in China from the perspectives of enterprise, government and society. It then points out the problems occurred in the progress, and provides suggestions concerning the promotion of CSR in China in the areas of acquiring a better understanding, improving China's CSR system and improving CSR reporting mechanisms. Copyright © 2014 Inderscience Enterprises Ltd. Source


Qian J.B.,Guangdong Academy of Social Science
Computational Economics | Year: 2015

This study explores the estimation of a panel model that combines multifactor error with spatial correlation. On the basis of common correlated effects pooled (CCEP) estimator (Pesaran in Econometrica 74:967–1012, 2006), the generalized moments (GM) procedure suggested by Kelejian and Prucha (Int Econ Rev 40:509–533, 1999) is employed to estimate the spatial autoregressive parameters. These estimators are then used to define feasible generalized least squares (FGLS) procedures for the regression parameters. Given N and T (Formula presented.) (jointly), this study provides formal large sample results on the consistency of the proposed GM procedures, as well as the consistency and asymptotic normality of the proposed feasible generalized least squares (FGLS). It is proved that FGLS is more efficient than CCEP. The small sample properties of the various estimators are investigated by Monte Carlo experiments, which confirmed the theoretical conclusions. Results demonstrate that the popular spatial correlation analysis used in previous empirical literature may be misleading because it neglects common factors. © 2015 Springer Science+Business Media New York Source

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