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Information and communication technology development and the digital economy impact human health. The mechanisms of how Internet use affects health outcomes through proximal factors such as health knowledge have not been adequately investigated in China. Therefore, through the China Health and Nutrition Survey database, this study aimed to verify whether Internet use could influence residents' health status by affecting health knowledge levels. We applied Probit regression and mediating models to achieve this goal. This paper provides direct evidence that Internet use may impact individuals' physical health through health knowledge mechanisms. Our study could provide insight into the use of the Internet and its impact on individual human health. In addition, the investigations and findings of this paper could further inspire policy measures with practical implications, such as Internet regulation, Internet policy interventions, and Internet infrastructure development. • Causal relationship between internet use and personal health is determined. • Internet use has a potentially positive effect on individual health levels. • Heterogeneity of the health effects has been found between ages and urban-rural areas. • Health knowledge includes physical activity, high-sugar foods, fruit, dietary knowledge. • Internet use influences physical health through health knowledge mechanisms. [ABSTRACT FROM AUTHOR]

To obtain the relation between rice starch features and fermentation characteristics, rice starches with various polymorphic types and apparent amylose contents were subjected to in vitro fecal fermentation. Gas and short-chain fatty acid production was evaluated as a function of fermentation time, and the microbial responses were monitored by 16S rRNA sequencing technique at the end of fermentation. Regardless of polymorphic type, three high-amylose mutant rice starches (i.e. , GM03, A-type; BP577, B-type; Wx21TT, C-type) displayed significantly slower fermentation rate during the first 12 h and higher final butyrate yield (17.6–17.9 mM) compared to the A-type normal starches (9311 and Wx22TT), and promoted the proliferation of Roseburia. However, A-type normal rice starches presented higher propionate production, and increased the growth of Bacteroides and Megamonas. The principal component and redundancy analyses indicated that three high-amylose mutant rice starches showed similar abundance and migration of microbial communities, and the apparent amylose content was closely correlated with the abundance of their five key amplicon sequence variants. Our results demonstrated that amylose content might be a controlling factor in determining the fermentation properties of rice starches than crystalline structure. [Display omitted] [ABSTRACT FROM AUTHOR]

The development of urban agglomeration in aquatic areas is premised on ecological security. The construction of ecological security network is an effective measure to reduce ecological resistance and guarantee economic development. In this study, a comprehensive ecological security network (ESN) evaluation approach is developed by integrating the Minimum Cumulative Resistance (MCR) model and Duranton and Overman Index (DOI). Taking the urban agglomeration around Poyang Lake in 2015 as a case, the MCR model showed the ecological landscape pattern of discrete connection and large overall ecological resistance. The DOI model indicated that the industries of moderately polluted were global localization, while heavily polluted were small-scale localization and large-scale dispersion. Accordingly, the ESN consisting of 35 ecological sources, 34 ecological corridors, 57 artificial corridors, and 39 eco-economic strategic nodes can avoid the threat of industrial layout to the ecological landscape. The results of this study complemented the guidance of industrial agglomeration theory on the basis of "source-sink" theory. The dual evaluation approach of landscape ecology and economic agglomeration proposed in this study explores interdisciplinary data fusion of different scales, and also provides a reference for inter-municipal coordinated ecological management and restraining urban excessive expansion. Unlabelled Image • A dual evaluation method based on ecological and economic perspectives was proposed to build ESN. • The MCR model obtained an ecological landscape pattern with large overall ecological resistance. • DOI results showed that the industrial localization pattern would threaten the ecological security. • The ESN with NW-SE as the central axis and NE-WS as the flank was obtained. [ABSTRACT FROM AUTHOR]