Results 21 to 30 of about 1,088 (179)
Saberes Educativos, 2020 In Chile, professional technical secondary education (EMPT in Spanish), in its essence and objective, ensures that its students achieve early entry into the labor market based on solid competences, skills, abilities and knowledge, also contributing to ...
Christian Loyola-Bustos
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Research on VFTO Identification of GIS Based on Wavelet Transform and Singular Value Decomposition
Energies, 2022 The accurate identification of Very Fast Transient Overvoltage (VFTO) is the key of overvoltage control in modern smart grids. In order to accurately identify VFTO generated by the operation of a disconnector in Gas Insulated Substation (GIS), a VFTO ...
Gang Xiao +7 more
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Dianci bileiqi, 2021 针对目前缺少有效设备仪器和方法保护接地系统雷击浪涌的问题,文中系统化地研究了地下配电电缆中使用的接地系统的暂态特性。通过现场实验测试与EMTP仿真分析,对传统多点接地电缆系统和非捆绑式公共接地电缆系统中性线感应的雷电过电压进行了评估计算与详细比较。首先通过EMTP软件建立配电缆雷击感应电压计算仿真模型;然后通过比较实际测量结果与EMTP仿真所得到的数值结果,验证本研究所建立的仿真模型的有效性和准确性。最终,通过验证后的模型的EMTP仿真结果对雷电绝缘水平进行预测。
廖思哲, 王婉婷, 郑刚
doaj
Electrical engineering & Electromechanics, 2022 Introduction. In high voltage networks intended for the transport of electrical energy, lightning can strike an electric line striking either a phase conductor, a pylon or a ground wire, causing significant overvoltage on the transmission lines ...
S. Boumous +3 more
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Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose To create a realistic in silico brain phantom for positive and negative magnetic susceptibility that incorporates susceptibility anisotropy, enabling the evaluation of how susceptibility anisotropy influences susceptibility separation algorithm performance.
Daniel Ridani +2 more
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High Voltage, EarlyView.ABSTRACT This paper investigates the generation mechanism of quasi‐power‐frequency resonant overvoltage triggered by multiple lightning strikes in high‐voltage alternating current (HVAC) systems equipped with shunt reactors. Based on field measurements from a 500 kV AC system, equivalent and simplified circuit models have been established to analyse ...
Tao Liang +7 more
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Quantitative Susceptibility Mapping of Kidney Stones: An Ex Vivo MRI Phantom Study
Magnetic Resonance in Medicine, Volume 96, Issue 4, Page 1846-1859, October 2026.ABSTRACT Purpose To visualize and characterize the five most common kidney stone types based on their magnetic susceptibilities in MRI using QSM. Methods Three water‐based agar phantoms were constructed, containing a total of 53 ex vivo kidney stones of varying types and sizes.
Lion H. Mücke +8 more
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¿Es relevante la educación media técnico-profesional?
Persona y Sociedad, 2009 La Educación Media Técnico-Profesional (EMTP) del país ha sido recientemente objeto de una mirada crítica a raíz de una serie de problemas en sus condiciones de funcionamiento. Este artículo analiza el discurso oficial sobre los propósitos formativos de
Iván Ortiz
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Journal of Biochemical and Molecular Toxicology, Volume 40, Issue 8, August 2026.Goniothalamin (GTN) exerts anticancer effects by promoting reactive oxygen species (ROS) generation, glutathione (GSH) depletion, DNA damage, endoplasmic reticulum (ER) stress, and mitochondrial dysfunction. These interconnected events trigger apoptosis, necroptosis, anoikis, and autophagy, while modulating mitogen‐activated protein kinase (MAPK ...
Nataša Joković +6 more
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Engineering Reports, Volume 8, Issue 6, June 2026.Power system protection devices are vulnerable to adversarial samples. We propose a digital twin and reinforcement learning framework. It trains a virtual model within safe operational boundaries, reducing the false operation rate to below 3.5%. The model's inference delay is under 10 ms, meeting real‐time protection requirements.
Wei Zhang +3 more
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