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考虑费控电能表信息安全交互的IPTP时钟同步技术 被引量:6
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作者 潘俊涛 郭小璇 +1 位作者 陈俊 唐志涛 《电测与仪表》 北大核心 2018年第22期147-152,共6页
随着分时电价在电力市场环境下应用日趋广泛,供用双方对电能表内置时钟的准确性有了更高要求。针对当前广泛使用的费控电能表时钟不一致问题,提出了一种考虑费控电能表信息安全交互模式的IPTP(improved PTP,IPTP)时钟同步机制。首先,通... 随着分时电价在电力市场环境下应用日趋广泛,供用双方对电能表内置时钟的准确性有了更高要求。针对当前广泛使用的费控电能表时钟不一致问题,提出了一种考虑费控电能表信息安全交互模式的IPTP(improved PTP,IPTP)时钟同步机制。首先,通过分析费控电能表时钟不一致的原因,给出计量自动化系统"主站-计量终端-电能表"及"主站-电能表"两种时间同步方案;然后,考虑费控电能表信息安全交互模式,提出两种费控电能表IPTP时钟同步机制;最后,利用两种IPTP时钟同步机制分析费控时钟调整效果,并与传统对时模式相比。工程试验结果表明两种方法具备较好的互补特性,结合使用能较好地实现费控电能表的时钟同步,而且对时效率和准确率高,具有广阔的应用前景。 展开更多
关键词 iptp 时间同步 计量自动化系统 费控电能表
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新型双极双齿配体的合成及其与铀酰离子相互作用的共振光散射 被引量:7
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作者 肖锡林 许丽 +3 位作者 王娇 廖力夫 蒋敏 彭鹏程 《南华大学学报(自然科学版)》 2017年第2期78-83,共6页
铀是重要的核燃料,也是发展核电的前提条件之一,而它具有重金属毒性和放射性,可对人类的生存和发展构成潜在的威胁.铀的检测对资源开发、健康维护和环境保护都非常重要.要高效地获得铀资源并防止铀污染,就必须开发高效无毒的铀配位剂.... 铀是重要的核燃料,也是发展核电的前提条件之一,而它具有重金属毒性和放射性,可对人类的生存和发展构成潜在的威胁.铀的检测对资源开发、健康维护和环境保护都非常重要.要高效地获得铀资源并防止铀污染,就必须开发高效无毒的铀配位剂.本文利用间苯二甲醛与吡咯发生的反应制备了一种新型的双极双齿配体isophthalaldehyde-tetrapyr-role(IPTP),并研究了其与铀酰离子进行配位作用的共振光散射光谱及机理,初步探讨了其用作铀配位剂开发分离分析新方法的可能性. 展开更多
关键词 双极双齿配体(iptp) 铀酰离子 共振光散射
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Knowledge and Perceived Barriers towards Intermittent Prevention of Malaria in Pregnancy: A Cross-Sectional Study
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作者 Frank Bediako Agyei Gideon Dzando +3 位作者 Anthony B. Donyi Elisha A. Nonoh Rebecca Dordunu Catherine Konadu Opoku 《Open Journal of Internal Medicine》 2021年第1期27-38,共12页
Background:<span> </span><span>Intermittent prevention of malaria is a key strategy adopted globally to ensure the wellbeing of pregnant women. By extension, these strategies enhance the healthy... Background:<span> </span><span>Intermittent prevention of malaria is a key strategy adopted globally to ensure the wellbeing of pregnant women. By extension, these strategies enhance the healthy development of the fetus. This study assesses the knowledge and practices of pregnant women towards intermittent malaria </span><span>prevention strategies in the Juaben Government Hospital of Ghana.</span><span> </span><span>Methods: A cross-sectional</span><span>,</span><span> quantitative</span><span>,</span><span> descriptive survey was conducted among 1</span><span>20 pregnant women at the antenatal clinic of the Juaben Government hospital in the Ashanti region of Ghana using a simple random sampling technique in selecting the study participants. The participant response rate was 94.5%. Data w</span><span>ere</span><span> analyzed using Statistical Package for the Social Sciences (SPSS) version 22.0.</span><span> </span><span>Results:</span><span> </span><span>Majority (54.2%) of respondents were between 20</span><span> </span><span>-</span><span> </span><span>29 years of age. Majority of study respondents attended Antenatal visits in their first trimester of pregnancy. Majority (69.2%) have knowledge of malaria preventive strategies in pregnancy, with about 70% of respondents stating these strategies were designed only for pregnant women. Only 37.5% of study respondents could rightly identify the chemoprophylaxis indicated for malaria prevention in pregnancy. Whereas majority (93.3%) of respondents owned insecticide-treated mosquito nets, only 63.3% utilized these nets for their purpose. Barriers to utilization of insecticide-treated nets include difficulty in setting up the nets (26.7%), using mosquito coils (10.8%), and feeling uncomfortable sleeping in the nets (36.7%). Barriers to taking malaria prophylaxis include distance to health facilities (28.3%), thoughts of not being sick with malaria (55.8%), using herbs (10.0%), and not being aware of the essence </span><span>of prophylaxis (7.5%). Conclusion:</span><span> </span><span>Knowledge of malaria preventive strategies in pregnancy is high. However, utilization of these strategies is low </span><span>due to perceived human and institutional barriers. A comprehensive community-wide approach is required to improve the utilization of these services among pregnant women.</span> 展开更多
关键词 MALARIA Intermittent Prevention and Treatment (iptp) Insecticide Treated Nets (ITNs) Antenatal Care Sulphadoxine Pyrimethamine (SP)
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Missed Opportunities for Intermittent Preventive Treatment among Pregnant Women, in a Secondary Health Facility, Cross River State, Nigeria
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作者 Olaide Bamidele Edet Edet Etim Edet +1 位作者 Patience Edoho Samson-Akpan Idang Neji Ojong 《Journal of Life Sciences》 2013年第11期1147-1158,共12页
关键词 间歇性 孕妇 预防 医疗设施 尼日利亚 治疗 二级 艾滋病病毒感染者
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