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In this paper, a comprehensive research of the evolution of the hierarchical structure and spatial pattern of coastal cities in China was conducted based on the data of distribution of the headquarters and subsidiaries of marine-related enterprises in 1995, 2005 and 2015 using the city network research method proposed by Taylor. The results of the empirical research showed: China’s coastal city network...
Marine economy is a new economic form, emphasizing new development concept, new operation mechanism and management mode. In recent years, marine economy shows rapid growth, and marine industry presents a clustering development trend. The industrial linkage effect, industrial agglomeration effect and industrial radiation effect of the marine industrial cluster are important motive forces for the development...
Topping, the critical cultural practice, is a kind of damage occurred tobacco shoot, which can obviously promote roots growth. Up to now, the mechanism regulating roots growth after topping is still unclear. In our previous works, miR171d was identified as a major topping responsive miRNA in tobacco roots, and its target gene was predicted to belong to the GRAS gene family. In the present study, NtGRAS-R1,...
Group-living animals may need to spend less time being vigilant, consequently, having more time for other important activities such as foraging (i.e., group size effect). Przewalski’s gazelle (Procapra przewalskii) is a group-living social animal, and a study was conducted in Qinghai Province of China during June–August 2006 by using a continuous focal sampling method to investigate the influences...
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