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Impact of a Glyphosate-Tolerant Soybean Line on the Rhizobacteria, Revealed by Illumina MiSeq
( Gui-hua Lu ),( Yin-ling Zhu ),( Ling-ru Kong ),( Jing Cheng ),( Cheng-yi Tang ),( Xiao-mei Hua ),( Fan-fan Meng ),( Yan-jun Pang ),( Rong-wu Yang ),( Jin-liang Qi ),( Yong-hua Yang ) 한국미생물 · 생명공학회 2017 Journal of microbiology and biotechnology Vol.27 No.3
The global commercial cultivation of transgenic crops, including glyphosate-tolerant soybean, has increased widely in recent decades with potential impact on the environment. The bulk of previous studies showed different results on the effects of the release of transgenic plants on the soil microbial community, especially rhizosphere bacteria. In this study, comparative analyses of the bacterial communities in the rhizosphere soils and surrounding soils were performed between the glyphosate-tolerant soybean line NZL06-698 (or simply N698), containing a glyphosate-insensitive EPSPS gene, and its control cultivar Mengdou12 (or simply MD12), by a 16S ribosomal RNA gene (16S rDNA) amplicon sequencing-based Illumina MiSeq platform. No statistically significant difference was found in the overall alpha diversity of the rhizosphere bacterial communities, although the species richness and evenness of the bacteria increased in the rhizosphere of N698 compared with that of MD12. Some influence on phylogenetic diversity of the rhizosphere bacterial communities was found between N698 and MD12 by beta diversity analysis based on weighted UniFrac distance. Furthermore, the relative abundances of part rhizosphere bacterial phyla and genera, which included some nitrogen-fixing bacteria, were significantly different between N698 and MD12. Our present results indicate some impact of the glyphosate-tolerant soybean line N698 on the phylogenetic diversity of rhizosphere bacterial communities together with a significant difference in the relative abundances of part rhizosphere bacteria at different classification levels as compared with its control cultivar MD12, when a comparative analysis of surrounding soils between N698 and MD12 was used as a systematic contrast study.
Design of Open Language Laboratory Information System in Network Environment
Hua Lv,Mei Ling Jiang,Cheng Shuang Han 보안공학연구지원센터 2015 International Journal of Smart Home Vol.9 No.7
College language lab is “the second classroom” of foreign language teaching. It is a place of effectively cultivating students' ability of self-learning and practicing. This paper analyzes the significance and role of the language laboratory for cultivating students' self-learning and innovation ability, designs out the model of function structue for the openning of the language laboratory, proposes the form of database design, and discusses the system architecture.
Cheng Zhao,Qiongyuan Hu,Xiuwen Wu,Guopu Chen,Hua Wu,Jianan Ren 한국고분자학회 2019 Macromolecular Research Vol.27 No.9
Previous studies have established that sole probiotics or fibre could be used to relieve colitis. However, few studies evaluated the synergistical effect of fibre and probiotics in treating colitis. This study, examined the effect of alginate, one of the commonest biomaterials and dietary fibre, and/or probiotics on the gut barrier in colitis mice. A synergistical effect was found between alginate and probiotics in colitis. Dextran sulfate sodium salt (DSS), a chemical toxic substance, was used to induce colitis model. Body weight, oxidative stress, inflammatory factors, gut barrier, intestinal morphology and the apoptosis of intestine epithelial cells were analyzed. A combination of probiotics and alginate was used to analyze their synergistic effect. The results showed that the combination of alginate and probiotics had a better therapeutic effect on colitis than using them individually, and they protected the gut barrier from DSS induced oxidative stress. The combination exhibited a greater ability in reducing pro-inflammatory factors and protecting the gut barrier from further damage. The synergistic effect of alginate and probiotics provides a great prospect for biotherapy in bowel diseases and oral drug delivery system.
Cheng-hua Shi,Cheng-yong Cao,Ming-feng Lei 대한토목학회 2017 KSCE Journal of Civil Engineering Vol.21 No.5
The ground movement induced by the construction of shield tunnels affects the safety of nearby underground pipes and aboveground structures. Therefore, the reliable prediction of ground movement is important. In this paper, a model describing the interaction between soil and an EPB shield used in tunnels is presented, based on the classical elastic theory of Mindlin. In this model, the changing location of the working shield is considered. The equations describing the ground deformation around the tunnel caused by the additional force on the shield working surface and the frictional force between the outer surface of the shield and the surrounding soil are derived. The ground deformation caused by ground loss due to shield tunnel construction is derived using stochastic medium theory. Finally, this model is applied to two running tunnels, and the sensitivity of the ground deformation to the calculation parameters is discussed.
Optimal Bandwidth Assignment for Packet Rings
Hua, Cunqing,Yum, Tak-Shing Peter,Li, Cheng The Korea Institute of Information and Commucation 2007 Journal of communications and networks Vol.9 No.4
The network throughput is an important performance criteria for the packet ring networks. Since maximizing the network throughput can lead to severe bias in bandwidth allocation among all flows, fairness should be imposed to prevent bandwidth starvation. The challenge here, therefore, is the joint optimization of the network throughput and fairness. In this paper, we present the optimal bandwidth assignment scheme to decompose this optimization problem into two tasks, one for finding fair bandwidth assignment and the other for finding the optimal routing. The network throughput is maximized under the fairness constraints when these tasks are performed iteratively.