摘要：
In this paper, we consider a ratio-dependent predator-prey system with diffusion. And we mainly discuss the following problems: (1) stability and Hopf bifurcation analysis of the positive equilibrium for the reduced ODE system; (2) Diffusion-driven instability of the equilibrium solution; (3) Hopf bifurcations for the corresponding diffusion system with homogeneous Neumann boundary conditions. In order to verify our theoretical results, some numerical simulations are also included, respectively. (C) 2010 Elsevier Ltd. All rights reserved.
作者：
Jing-song Wang;Zheng-lei Bao;Si-guang Chen;Jin-hui Yang
期刊：
Journal of Engineering for Gas Turbines and Power,2011年133(8):735-740 ISSN：0742-4795
作者机构：
[Jing-song Wang; Zheng-lei Bao; Si-guang Chen; Jin-hui Yang] School of Urban Construction, Hunan Key Laboratory of Pollution Control and Resource Reuse, Key Discipline Laboratory for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, Hunan 421001, P.R. China
会议名称：
ICONE18
会议时间：
2010-05-17
会议地点：
Xi'an(CN)
会议论文集名称：
18th international conference on nuclear engineering 2010. vol. 3, Nuclear technology ...
摘要：
This study focuses on developing a new method to remove uranium from aqueous solution. Chitosan and ferrous ions were used together to remove uranium ions from aqueous solution. Through two-step pH adjustment, the uptake behavior of chitosan and ferrous ions toward uranium in aqueous solution using batch systems was studied in different experimental conditions. The experimental results indicated that the removal of uranium by the synergetic effect of chitosan and ferrous ions was more effective than the way of adsorbing uranium ions by chitosan alone. Under the given experimental conditions, the concentration of the residual uranium in the effluent after the chitosan and ferrous ion treatment could meet the discharge standard (<0.05 mg l−1) when the initial concentration of uranium ions was 10 mg l−1 or 100 mg l−1 . The synergetic effect of chitosan and ferrous ions, including adsorption, coacervation, and coprecipitation, was responsible for the high removal rate of uranium.
摘要：
目的 探讨载脂蛋白A5(ApoA5)基因多态性及其血清水平与代谢综合征的相关性.方法 选择代谢综合征(MS)患者100例(代谢综合征组)和健康人100例(对照组).用ELISA法检测两组的载脂蛋白A5血清浓度,采用PCR-RFLP法测定两组的ApoA5-1131T＞C基因多态性,并用全自动分析仪测空腹血糖(FPG)、总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白(LDL)、高密度脂蛋白(HDL)及白细胞、血红蛋白、血小板、肝肾功能.结果 代谢综合征组与对照组比较:ApoA5血清浓度明显降低[(96.68±18.09)ng/ml vs (128.32±23.78)ng/ml,P＜0.01],TG明显升高[(2.35±1.07)mmol/L vs (1.62±1.13)mmol/L,P＜0.01)],而且代谢综合征组的ApoA5-1131C基因型频率明显高于对照组(30% vs 16.5%,P＜0.05).结论 代谢综合征患者的ApoA5血清浓度明显降低,ApoA5-1131C与代谢综合征有相关性.
