Zhongguo shiyan zhenduanxue, 2016 中耳炎是儿童仅次于上呼吸道感染的第二大常见疾病,病理特点包括中耳（例如咽鼓管、鼓窦、鼓室及乳突气房）全部或部分结构的炎性病变,发病原因主要是细菌及病毒感染[1]。急性中耳炎是中耳黏膜的急性化脓性炎症,通常持续数天[2]。慢性中耳炎会将病变炎症部位延伸至内耳[3]。持续的内耳损伤可以导致感觉神经性听力丧失、阻碍语言能力的发展及社交障碍[4,5]。有效的控制内耳炎症的后遗症是保护青少年听力的重要环节 ...
王亚娜, 张良
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Gaoya dianqi, 2013 依据向家坝—上海特高压直流输电示范工程实际设备参数建立了系统仿真分析模型,研究了逆变站失去电源、中性线开路、金属回线开路3种典型开路故障引起操作过电压的机理及分布规律,并针对保护启动延时以及快速接地开关动作延时提出了过电压的抑制措施,对后续特高压直流输电工程避雷优化配置具有一定的指导意义。
钟建英
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Dianci bileiqi, 2007 综述了低压配电系统防雷产品发展的四个阶段,对其具有代表性的产品技术原理和技术性能以及优缺点进行了总结。第一代产品——空气间隙具有放电不稳定,放电具有延时效应,工频续流较大。第二代产品——阀式避雷器采用碳化硅电阻片,具有较明显的非线性特性,配合放电间隙可很好地限制间隙击穿后的工频续流,但放电分散性大,连续电涌冲击保护能力差,使用寿命短。第三代产品——金属氧化物避雷器具有更优良的非线性特性和更大的电涌吸收能力,还具有纳秒级的响应速度,以及优异的陡波响应特性等优点,但在小电流区具有明显的负电阻温度系数 ...
吴焕勤, 王喜贵, 刘明东
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[The practice of building a wound repair discipline system with Chinese characteristics in countryside area: insights from the "Three Souths" experience]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za ZhiFu XB.
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[Limb reconstruction over four decades: the seamless path from technical integration to disciplinary ecology]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiZhu Y.
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[Advancing the development of hematology care units to enhance hematology‑specific critical care capacity]. [PDF]
Zhonghua Xue Ye Xue Za ZhiFan SJ, Li HT, Zhang X.
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[Construction of the evaluation index system for nursing quality management in outpatient dental clinics based on the structure-process-outcome model]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiWei J +7 more
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[Adolescent depressive disorder: prevalence, risk factors, current status of diagnosis and treatment, and challenges]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiCong EZ.
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[Managing refractory wounds in the elderly with the concept of chronic critical illness]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za ZhiGuo GH, Huang SY, Zhu F.
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