Cheng-Zhi Li

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This paper presents a new reliable MAC protocol called “RMAC” supporting reliable multicast for wireless ad hoc networks. By utilizing the busy tones to realize the multicast reliability, RMAC has three novelties: (1) it uses a variable-length control frame to stipulate an order for the receivers to respond, thus solving the feedback collision problem; (2)(More)
OBJECTIVE To establish a SD rat model of vulvar lichen simplex chronicus (LSC) and investigate the expression of protease activated receptor 2 (PAR2) in the genital skin. METHODS Seventy female SD rats were randomly divided into group A (blank control group, n=10), group B (with application of acetone solution 3 times per week for 10 weeks, n=10), group C(More)
OBJECTIVE To explore the feasibility and efficacy of focused ultrasound for the treatment of vulvar dystrophy, including squamous hyperplasia (SH) and lichen sclerosus (LS). METHODS A total of 76 eligible patients with vulvar dystrophy (45 SH and 31 LS) were treated with focused ultrasound between 1999 and 2002. Before and after ultrasound therapy, both(More)
OBJECTIVE To investigate the short and long-term efficacy and complications, as well as the influential factors of focused ultrasound for the treatment of vulva dystrophy. METHODS Seventy-six eligible patients with vulva dystrophy were randomized and treated with focused ultrasound between 1999 and 2002. Among them, 45 patients were with squamous(More)
10.2217/14750708.4.2.181 © 2 Objective: This study was undertaken to investigate the ultrastructural changes of non-neoplastic epithelial disorders of the vulva (known as vulvar dystrophies) after focused ultrasound treatment and to assess the effectiveness of such treatment. Materials & methods: In total, 60 patients with non-neoplastic epithelial(More)
OBJECTIVE To analyze postmortem chemical changes in Landrace costal cartilages and ribs using attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy, and to provide a novel technique for estimation of postmortem interval (PMI). METHODS The swines were sacrificed by hemorrhage and their costal cartilages and ribs were kept in 20(More)
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