为了识别含褶皱缺陷的风力机叶片主梁初始损伤临界状态,在流变学理论的基础上建立了疲劳损伤萌生区域温度场与应力场的定量关系,在已知初始损伤尺寸的条件下推导了初始损伤温度跃变判据,在平面应力假设的条件下推导了损伤萌生的临界声发射幅值和累积声发射数的函数关系。为了验证红外热像(infrared thermography,简称IR)方法识别初始损伤状态的有效性,制作带皱褶的玻璃纤维增强复合(glass fiber reinforced plastic,简称GFRP) 材料层合板试件进行疲劳拉伸实验 ...
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[Clinical efficacy of two-stage ear reconstruction using autologous rib cartilage in the correction of congenital microtia]. [PDF]
Xu ZC +6 more
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[Clinical decision-making for immediate restoration of terminal dentition: determination and transfer of jaw relations]. [PDF]
Gu Y, Yang S, Yuan Q.
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[Effects of cold atmosphere plasma treatment on the biological behavior of human gingival fibroblasts]. [PDF]
Zheng M +7 more
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[Study on occurrence of anterior ankle pain after distal tibial extra-articular fractures treated with retrograde tibial intramedullary nail]. [PDF]
Xiong Y +5 more
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[Effectiveness of posterior single-level osteotomy with 360° release and correction in treatment of osteoporotic vertebral compression fractures with moderate to severe kyphosis]. [PDF]
Qing P +5 more
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全球范围内饲养与圈养野生动物的目的是保护、研究、教育和娱乐。保障圈养动物福利不仅是一项道德义务,更是当下的迫切需求。本研究探讨了圈养野生动物的福利现状,评估了当前改善福利的主要策略,并着重剖析了常见的挑战。相较于自然生境,圈养环境下的动物在食物获取、兽医护理及免受捕食风险方面具有一定优势,但是它们在空间活动、社交互动及行为自主性等方面受到诸多限制,这可能导致刻板行为的产生以及慢性压力的积累,对活动范围广泛和认知较复杂的物种影响更为显著。当前改善圈养野生动物福利的主要措施包括丰容 ...
刘召丽, 暴文爽, 姜广顺
doaj
[Advances in application of cell imprinting technology in biomedical field]. [PDF]
Zhao XM, Zhang ZY, Sun WJ, Qing GY.
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[Application of molecularly imprinted polymers-based sensors for determination of acute coronary syndrome biomarkers]. [PDF]
Zhang Y +6 more
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强暴雨的发生会短接输电线路、杆塔、绝缘子串空气间隙绝缘距离,致使其发生雨闪事故,危害电网安全运行。为了研究强暴雨条件下空气间隙雨柱断裂特性及其对放电特性的影响规律,文中针对棒—板短空气间隙采用仿真结合试验的方式开展了雨柱断裂特性研究。结果表明:在不同流速条件下,雨柱断裂长度均随外施电压的增加而降低,但降低的趋势与流速呈负相关;雨柱临界长度随流速的增加而增大,且随雨水电导率的增大而减小,但降低的趋势随之增大;雨柱断裂的直径和断裂时刻均随外施电压的增大而减小,两者变化率均与雨柱直径正相关 ...
董冰冰 +4 more
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