Objective To investigate the effects of different electromagnetic fields on some haematochemical parameters of circadian rhythms in Sprague-Dawley rats. Methods The study was carried out in 18 male and 18 female rats ...Objective To investigate the effects of different electromagnetic fields on some haematochemical parameters of circadian rhythms in Sprague-Dawley rats. Methods The study was carried out in 18 male and 18 female rats in good health conditions exposed to 50 Hz magnetic sinusoid fields at the intensity of 1000 μT, 100 μT, and 0 μT (control group) respectively, and in 18 male and 18 female rats in good health conditions exposed to 1.8 GHz electromagnetic fields at the intensity of 50 V/m, 25 V/m and 0 V/m (control group), respectively. Following haematochemical parameters for glucose, triglycerides, and total cholesterol were measured. Results Different effects of electromagnetic fields on circadian rhythms of both male and female rats were observed. Different changes occurred in some haematochemical parameters for glucose, triglycerides, and total cholesterol (P〈0.05). Conclusion Exposure to different electromagnetic fields is responsible for the variations of some haematochemical parameters in rats.展开更多
频段部署于1.8 GHz的LTE(Long Term Evolution)制式无线通信系统在当下轨道交通的新建线路中已得到广泛应用。隧道场景中存在泄漏电缆和分布式天线两种无线信号覆盖方式,其中,泄漏电缆的成本较高、安装难度较大,而分布式天线的网络规划...频段部署于1.8 GHz的LTE(Long Term Evolution)制式无线通信系统在当下轨道交通的新建线路中已得到广泛应用。隧道场景中存在泄漏电缆和分布式天线两种无线信号覆盖方式,其中,泄漏电缆的成本较高、安装难度较大,而分布式天线的网络规划难度较高。文章基于射线跟踪仿真平台CloudRT对绍兴地铁2号线进行高精度信道仿真,从信号覆盖均匀性、是否能满足接收机最低门限要求、覆盖较优段占比三个方面综合分析优劣,并给出分布式天线网络规划的建议。展开更多
文摘Objective To investigate the effects of different electromagnetic fields on some haematochemical parameters of circadian rhythms in Sprague-Dawley rats. Methods The study was carried out in 18 male and 18 female rats in good health conditions exposed to 50 Hz magnetic sinusoid fields at the intensity of 1000 μT, 100 μT, and 0 μT (control group) respectively, and in 18 male and 18 female rats in good health conditions exposed to 1.8 GHz electromagnetic fields at the intensity of 50 V/m, 25 V/m and 0 V/m (control group), respectively. Following haematochemical parameters for glucose, triglycerides, and total cholesterol were measured. Results Different effects of electromagnetic fields on circadian rhythms of both male and female rats were observed. Different changes occurred in some haematochemical parameters for glucose, triglycerides, and total cholesterol (P〈0.05). Conclusion Exposure to different electromagnetic fields is responsible for the variations of some haematochemical parameters in rats.
文摘频段部署于1.8 GHz的LTE(Long Term Evolution)制式无线通信系统在当下轨道交通的新建线路中已得到广泛应用。隧道场景中存在泄漏电缆和分布式天线两种无线信号覆盖方式,其中,泄漏电缆的成本较高、安装难度较大,而分布式天线的网络规划难度较高。文章基于射线跟踪仿真平台CloudRT对绍兴地铁2号线进行高精度信道仿真,从信号覆盖均匀性、是否能满足接收机最低门限要求、覆盖较优段占比三个方面综合分析优劣,并给出分布式天线网络规划的建议。