TR069协议在IPTV终端管理系统中的研究与应用

根据目前IPTV业务和互动需求,设计一套实时有效的IPTV终端管理系统具有极大的现实意义.详细分析了TR069协议及其关键技术,着重对IPTV机顶盒进行研究,实现了TR069协议在IPTV机顶盒终端管理业务中的应用.测试结果显示,所设计的IPTV机顶盒终端管理系统能够满足IPTV终端管理的实时性、有效性需求.     

光进铜退下家庭网络管理体系架构研究

随着光进铜退的推进,家庭网络管理体系如何演进,为用户提供更优体验,是电信运营商急需解决的问题。本文探讨在光进铜退下,实现家庭网络管理体系对家庭终端及家庭网络的可管可控,进而实现家庭业务零配置开通和家庭终端的远程故障处理。     

Lactobacillus rhamnosus TR08 Improves Dyslipidemia in Mice Fed with a High Fat Diet by Regulating the Intestinal Microbiota,Reducing Systemic Inflammatory Response,and Promoting Sphingomholipid Metabolism

Dysbiosis is a crucial manifestation of dyslipidemia; however, oral supplementation of probiotic modulates the intestinal commensal composition. The protective mechanism of probiotics against hyperlipidemia is still under investigation. To elucidate the hypolipidemic effect of Lactobacillus rhamnosus TR08 through the analysis of gut microbiota and lipid metabolomics, we investigated changes in gut microbiota and lipid metabolomic phenotypes in mice by real time quantitative PCR and untargeted metabolomics analysis. High fat diet–induced dyslipidemia mice were orally administered with TR08 for 8 weeks. The proinflammatory cytokines (interleukin–2 and interferon–γ) levels in spleen and aortic wall injury in the mice fed with a high-fat diet were inhibited after treatment with TR08 at 1 × 10⁸ CFU per day per mouse. TR08 also reshaped the gut microbiota with increases of the relative abundances of Bifidobacterium and Bacteroides, reduced the abundance of the pro–pathogen bacterial Enterococcus, increased the serum level of short chain fatty acids (SCFAs) contents, and promoted sphingomholipid metabolic pathway. The results indicated that TR08 could improve the intestinal microbiota of mice to increase the production of SCFAs, and then play the anti–inflammation induced by hyperlipidemia and reduce the inflammatory injury of blood vessel wall. Therefore, TR08 can potentially be used as a hypolipidemic effect probiotic in further interventions.     

宽带天线开关管频率特性的理论计算

本文从理论上计算了天线开关管(又称TR管)的频率特性,理论模型是谐振元件的集总参数的并联,逐级进行电纳的变换。数值计算是采取FORTRAN语言程序在向量计算机上进行的。计算曲线与实验结果比较符合。计算曲线对于宽带TR管的频带设计提供了有益的参考。