Results 1 to 10 of about 7,598 (162)
气候变化背景下, 极端降水事件发生频率与强度的增加直接影响区域生态安全, 分析极端降水时空变化特征对于区域风险评估具有重要意义。基于山西省1960—2019年22个气象站点的逐日降水数据, 选取12个极端降水指数, 采用线性趋势分析、Mann-Kendall趋势检验与突变分析、Morlet小波分析和反距离权重插值等方法, 对山西省近60年极端降水的时空变化特征进行研究。结果表明: (1)山西省整体呈干旱化趋势, 降雨日数(R1MM)下降趋势显著; (2)部分极端降水指数在20世纪70年代前后发生突变 ...
董伯纲, 于洋
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从研究山西省生态脆弱性形成的客观条件人手,研究了山西省生态脆弱性的控制影响因素和基础影响因素,对基础影响因素的指标进行计算处理,求出了山西省各县市基础影响因素的综合指标值,在此基础上把山西省划分了5个生态脆弱类型区,并对今后进一步研究生态脆弱类型区提出了合理化的建议。
赵艺学
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基于卖方灵活合同的绿电与绿证中长期联合交易机制及其均衡分析 [PDF]
提出了一种基于卖方灵活合同的绿电与绿证中长期联合交易机制,聚合商协商达成中长期绿电交易合同,并基于风、光出力预测误差,考虑现货市场交易的影响执行卖方灵活合同交割。同时,聚合商可通过绿证市场交易,完成绿证考核指标。为验证该机制的有效性,进一步构建了聚合商绿电-绿证交易均衡模型,并设计了基于Lp-Box ADMM(alternating direction method of multipliers,交替方向乘子法)的分布式求解算法。通过模拟算例分析,验证了所提方法的有效性并分析了对聚合商交易行为及成本 ...
朱玥荣 +6 more
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Objective To understand the scientific research innovation ability and training needs of clinical nursing staff at all levels of hospitals, so as to provide a reliable basis for the development of training programs to improve the scientific research ...
YAN Xin (闫欣) +4 more
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山西省汾阳高级护校于一九二二年由基督教华北公理会创建,与一九一六年建的山西汾阳医院形成山西重要的医疗卫生教育中心。一九五一年人民政府接办,五二年改为中级护校。后迁校于山西太谷县。 该校曾为发展我国护理教育事业做出过重要的贡献,原山西省付省长郭钦安,上海红十字会会长白备伍等老一辈均曾在该校就读。现在国外仍承认汾阳高级护校的学历,可见该校在国内外影响之深远。 我国高等护理教育事业与西方一些发达国家比较,起步较晚、起点较低 ...
任贵生, 侯李
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考虑梯级碳交易机制和电转气两阶段运行的综合能源系统优化 [PDF]
为提升综合能源系统(integrated energy system,IES)的能效水平,提出了一种考虑梯级碳交易机制和电转气(power-to-gas,P2G)两阶段运行的IES调度模型。首先引入碳捕获与封存技术(carbon capture and storage,CCS),解决了P2G所需碳源和热电联产机组的碳排放问题;同时在传统P2G的基础上引入氢燃料电池,研究P2G两阶段运行的多重效益;最后,运用梯级碳交易机制限制碳排放。在此基础上,建立以碳交易成本、系统运行成本 ...
李贵君 +4 more
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Objective To evaluate the of quality control circle (QCC) activities in improving the implementation of “one-doctor-one-patient” in the outpatient department of ophthalmology hospital. Methods A QCC team was established to conduct QCC activities.
LAN Yanfei (兰艳飞) +5 more
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Design and application of an adhesive ophthalmic drug delivery device (一种粘贴式眼科受水器的设计与应用)
Irrigation of the conjunctival sac is an emergency treatment if there has been chemical injury to the eye, and the ocular drug delivery device is an essential tool for irrigation. This paper introduced the design and application of an adhesive ophthalmic
JIA Tingting (贾婷婷) +3 more
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Objective To investigate the current situation and potential influencing factors of cardio-pulmonary resuscitation (CPR)knowledge and first-aid skills among community-dwellings, and to evaluate the community-based CPR training program. Methods A random
WANG Le (王乐), LUO Shan (罗珊)
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Objective To investigate the effects of Bian Stone (stone needle) and Chinese herbal medicine hot compression therapy based on meridian massage in improving pain, Neck Disability Index (NDI), and cervical range of motion (ROM) in patients with cervical ...
LI Tingting (李婷婷) +5 more
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