Results 121 to 130 of about 14,295 (168)

百米级尺寸风机叶片雷电下行先导接闪特性的仿真研究

Dianci bileiqi
针对百米级长度风力发电机叶片雷击接闪特性不明晰、防护设计缺乏依据的问题，本研究建立了大容量风机叶片雷击接闪过程的三维仿真模型，模型计算结果与运行数据吻合。计算获得了6.7MW风机叶片沿长度方向不同位置的雷击暴露空间和年雷击次数的分布特征，结果表明随着雷电流幅值增加，叶尖的引雷能力增强并对叶片内侧存在屏蔽作用，自叶尖往叶根方向年雷击次数迅速衰减。当风机叶片与纵轴线夹角为90°时，叶片内侧遭受雷击的风险最高。与1.5MW机组相比，6.7MW风机叶片内侧年雷击次数增加1.71倍。分析表明，雷电流幅值为5.0 ...
秦明, 文仁强, 邬锦波, 程建, 慎志勇, 吴松熊, 谢思源, 贺恒鑫   +7 more
doaj  

[Exposures to volatile organic compounds are positively correlated with risks of metabolic dysfunction-associated steatotic liver disease]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Li K, Zeng W, Zhang Y, Zhu X, Guo B.
europepmc   +1 more source

国家海洋局关于进一步规范海上风电用海管理的意见 [PDF]

, 2016

core  

[Research progress in the field of drug-induced liver injury in 2025]. [PDF]

Zhonghua Gan Zang Bing Za Zhi
Zhi Y, Dong YN, Lei XH, Mao YM.
europepmc   +1 more source

[Impact of antenatal corticosteroids on respiratory morbidities in late preterm infants born to mothers with gestational diabetes mellitus]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Lin YC, Gao L, Shen W, Zheng Z, Lin XZ.
europepmc   +1 more source

[Development of dynamic multi-time-point clinical prediction models for bronchopulmonary dysplasia in preterm infants with gestational age < 32 weeks]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Li W, Zhang XF, He XR, Wang T, Hu JT, Li W, Dong QY, Gong XY, Yang YH, Chen PY.   +9 more
europepmc   +1 more source

[Construction and Clinical Validation of a Risk Early Warning Model for Mechanical Ventilation-Associated Pneumonia in Older Patients With Lung Cancer]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Wang Z, Shi M, Zhao P, Zhou Y, Zhang Z, Qu G, Fang X.   +6 more
europepmc   +1 more source

[2024 American Academy of Orthopaedic Surgeons (AAOS) Clinical Practice Guideline: An interpretation of the diagnosis and management of acute isolated meniscal injury]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Xiong Q, Hu Y, Fan L, Li J, Fu W.
europepmc   +1 more source

[Construction of a prognosis forecasting model for breast cancer based on lipid metabolism-related genes and functional verification of <i>ALDH2</i>]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Lu Z, Lu Y, Zhou J, Zhu Y.
europepmc   +1 more source

[Clinical research and medical ethics in the era of artificial intelligence]. [PDF]

Zhonghua Gan Zang Bing Za Zhi
Song X, Gao N, Huang KQ, Chen XY, Deng SJ, Xie C, Peng L.   +6 more
europepmc   +1 more source