Xiaohong Peng

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A power-efficient frequency compensation topology, Impedance Adapting Compensation (IAC), is presented in this paper. This IAC topology has, on one hand, a normal Miller capacitor, which is still needed to provide an internal negative feedback loop, and on the other hand, a serial RC impedance as a load to the intermediate stage, improving performance(More)
Tannins are water-soluble polyphenolic compounds in plants. Hydrolyzable tannins are derivatives of gallic acid (3,4,5-trihydroxybenzoic acid) or its meta-depsidic forms that are esterified to polyol, catechin, or triterpenoid units. Tannases are a family of esterases that catalyze the hydrolysis of the galloyl ester bond in hydrolyzable tannins to release(More)
M1 macrophage polarization is proved to promote inflammation in atherosclerosis process. In this study, we evaluated the inhibitory effect of geraniin, a bioactive polyphenolic compound, on the LPS-induced switch of THP-1 macrophages to M1 phenotype, and we propose a molecular basis for its action. Flow cytometry analysis indicated that geraniin(More)
Tannase catalyses the hydrolysis of the galloyl ester bond of tannins to release gallic acid. It belongs to the serine esterases and has wide applications in the food, feed, beverage, pharmaceutical and chemical industries. The tannase from Lactobacillus plantarum was cloned, expressed and purified. The protein was crystallized by the sitting-drop(More)
In this paper, we have made a comprehensive study about the key technologies including applying wireless sensor networks to the traffic monitoring network, its traffic flow forecast based on gray forecasting model and traffic congestion control. According to the features that wireless sensor networks have no space constraints, flexible distribution, mobile(More)
Sterile protection against malaria infection can be achieved through vaccination of mice and humans with whole Plasmodium spp. parasites. One such method, known as infection-treatment-vaccination (ITV), involves immunization with wild type sporozoites (spz) under drug coverage. In this work, we used the different effects of antimalarial drugs chloroquine(More)
Article history: Available online 17 February 2011 Keyword: Dynamic XOR/XNOR Gate Leakage Power Variation 0167-9317/$ see front matter 2011 Elsevier B.V. A doi:10.1016/j.mee.2011.02.068 ⇑ Corresponding author. Tel.: +86 15001166864. E-mail address: wangjinhui888@yahoo.com.cn (J. A hybrid network technique is proposed in dynamic CMOS XOR/XNOR gate to reduce(More)
In this work, we present an unequal packet loss protection scheme for robust H.264/AVC video transmission over lossy networks. This scheme combines erasure coding, H.264/AVC error resilience techniques and importance measures in video coding. The unequal importance of the video packets is identified in the group of pictures (GOP) and the H.264/AVC data(More)
It has been reported that quantitative alterations and sequence variations of mtDNA are associated with the onset and progression of particular types of tumor. However, the relationship between mtDNA content, certain mtDNA polymorphisms in peripheral blood leukocytes and breast cancer risk remain obscure. This study was undertaken to investigate whether(More)
OBJECTIVE The large sample retrospective cohort study were used to compare the diagnostic efficiency of PET/CT with conventional work-up (CWU) for evaluating nasopharyngeal carcinoma (NPC) distant metastasis. METHOD Five hundred and fourteen patients with NPC were divided into PET/CT group and CWU group according the method of detecting distant(More)