Ethical guidelines for birth defect prevention recommended by experts. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue Ban, 2022 Branch of Medical Ethics of Chinese Medical Association +1 more
europepmc +1 more source
基于PSCAD的10 kV电磁式电压互感器铁磁谐振影响因素的仿真与分析
Dianci bileiqi针对现有铁磁谐振保护措施存在事后补救的弊端，文中对铁磁谐振影响因素进行量化分析，确定其关键影响因素，在电网规划建设、运行调度等阶段加以避免，属于一种事前预防铁磁谐振的措施。首先对电磁式电压互感器（Voltage Transformer，VT）铁磁谐振机理进行分析，确定其发生的影响因素；然后基于PSCAD构建铁磁谐振仿真模型，并通过试验验证模型的可行性；最后在该模型上采用多重运行模式遍历铁磁谐振的主要影响因素，构建基于概率统计的重要性评价指标并进行量化分析，确定电磁式VT铁磁谐振的关键影响因素 ...
江永鑫, 陈丽安, 谭博引
doaj
野生动物学报, 2001 ２０００年９月１３日，穿越茂名市区的小东江迎来了２１只可爱的白鹭，美丽的油城又多了一道独特的亮丽风景线。３０多年未见白鹭栖息的小东江市区段从此热闹非凡。 无比惊喜的市民，争睹白鹭美丽的身姿。《广州日报》、《茂名日报》等多家新闻媒体纷纷发布消息，进行评论，认为白鹭到闹市区与市民和谐共处的现象十分罕见，表明茂名市城市绿化美化和小东江综合治理已初见成效！市委书记王兆林等市领导也及时赶来了，并当即指示有关部门采取有力措施，保护好这群白鹭，让这一道亮丽的美景永远留给茂名市民。为防止猎杀白鹭 ...
周想添 +4 more
doaj
[Investigation of medical humanistic practice ability of nurses and factors affecting their practices: a questionnaire-based analysis of 1196 cases in a general hospital in Hunan Province]. [PDF]
Nan Fang Yi Ke Da Xue Xue Bao, 2023 Zhang L +5 more
europepmc +1 more source
Gaoya dianqi文中详细分析了几起电力系统谐振典型案例，总结了系统谐振产生的条件，以及在系统谐振期间反映在GIS设备上产生的多种异常特征，并分析了如何通过观察这些异常现象迅速做出定性判断，从而采取正确有效手段消除隐患，避免设备损坏，保证系统安全运行。同时文中对后续采取的抑制谐振措施也进行了详细的论述说明，为提高电力系统稳定运行和避免谐振故障提供参考。
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doaj
The life course health development model: a new approach to understanding human health. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue Ban, 2021 Ke Y, Chai X.
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Zhonghua Shao Shang Za Zhi, 2021 Xu QQ +4 more
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Sichuan Da Xue Xue Bao Yi Xue Ban, 2022 Zhou CC, Hu YX, Wang YB.
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[A Review of Chronic Stress and the Initiation and Evolution of Cancer]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue Ban, 2021 Liu MX, Xie XM, Li Q, Xu C.
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