Results 71 to 80 of about 40,690 (240)

Correlative Chemical Imaging to Reveal the Nature of Different Commercial Graphene Materials

Small Methods, EarlyView.
Commercial graphene‐based materials from different sources and of varying complexities were investigated correlatively using commonly employed imaging techniques, including SEM, AFM, ToF‐SIMS, AES, and EDS. ToF‐SIMS combined with SEM was identified as the most effective combination for simultaneously resolving the complex morphology and chemical ...
Robert Schusterbauer, Paul Mrkwitschka, Mario Sahre, Elena Corrao, Amaia Zurutuza, Alexander Doolin, Francesco Pellegrino, Jörg Radnik, Ievgen S. Donskyi, Vasile‐Dan Hodoroaba   +9 more
wiley   +1 more source

Otitis in pet guinea pigs: Causes, clinical signs, treatment and outcomes

Veterinary Record, EarlyView.
Abstract Background Otitis is a major disease impacting both pet guinea pigs and laboratory guinea pigs that are used as models in human otological studies. Methods Medical records from two veterinary clinics were retrospectively reviewed to identify guinea pigs diagnosed with computed tomography (CT)‐confirmed otitis between 2014 and 2023.
Patricia Muffat‐es‐Jacques, Mathilde Charrasse, Paul Raymond, Minh Huynh, Thomas Coutant, Charly Pignon   +5 more
wiley   +1 more source

Organic Representation as a Critical Media Approach to Leadership Studies in Popular Culture

New Directions for Student Leadership, Volume 2025, Issue 185, Page 75-80, Spring 2025.
ABSTRACT This article applies the critical media concept of organic representation to leadership studies as an analytic of how various creators in popular culture today are not just writing inclusive storytelling but, more notably, modeling new modes of production and self‐presentation that are actively challenging hegemonic industry practices and ...
Raffi Sarkissian
wiley   +1 more source

From Local Patterns to Global Context: A Multimodal Deep Learning Approach for Complex Power Quality Disturbance Recognition

Artificial Intelligence for Engineering, EarlyView.
A multimodal deep learning framework that combines time–frequency feature extraction, lightweight Transformer‐based global dependency modelling and signal‐based cross‐attention is proposed for recognising complex power quality disturbances. The framework effectively integrates local and long‐range representations, enabling robust and accurate ...
Jiajian Lin, Hadi Nabipour Afrouzi, Mehran Motamed Ektesabi, Jalal Tavalaei   +3 more
wiley   +1 more source

Differences in M‐components between triggered lightning striking the ground and overhead line

High Voltage
In the summer of 2018–2019, rocket‐triggered lightning experiments were conducted in Guangzhou, China. There were two types of lightning targets: ground and overhead line.
Li Cai, Yiyang Du, Wenchao Fan, Mi Zhou, Jianguo Wang, Jinxin Cao, Yadong Fan   +6 more
doaj   +1 more source

Investigating Spatial‐Temporal Optical Emission Spectroscopy of Unstable Positive Leaders in Long Sparks Under Atmospheric Pressure

High Voltage, EarlyView.
ABSTRACT This study explores exciting state species and reaction pathways in positive leaders to better understand the breakdown mechanisms of long air gap discharges and natural lightning. Emission spectra from an unstable positive leader in a 1 m rod‐plate air gap under switching impulse voltages were observed, spanning 300–800 nm.
Hengxin He, Yubin Huang, Wanxia Zhang, Chang Liu, Xiuyuan Yao, Yu Ying, Weijiang Chen   +6 more
wiley   +1 more source

Observation of an upward lightning flash with 21 upward positive leaders initiated from different wind turbines in wind farm

High Voltage
As the wind turbine height increases, the probability of multiple upward leaders flashes within the wind farm increases. In this study, an upward lightning flash containing 21 upward positive leaders (UPLs) initiated from different wind turbines in ...
Li Cai, Yifeng Ke, Wenchao Fan, Ruisheng Yan, Mi Zhou, Jianguo Wang, Yadong Fan   +6 more
doaj   +1 more source

Evaluation Methodology, Numerical Verification and Retrofilling Procedure for Power Transformers to Ensure K‐Class Flame Retardancy and Environmentally Friendly

High Voltage, EarlyView.
ABSTRACT With increasing demands for fire safety and environmental friendliness, retrofilling transformers with alternative insulating liquids has become a growing trend. However, retrofilling power transformers remains uncertain, as more residual mineral oil compromises K‐class flame retardancy, and its impact on environmental performance has yet to ...
Zhenfu Tang, Yihua Qian, Dan Zhou, Wei Hu, Feipeng Wang, Yang Xu   +5 more
wiley   +1 more source

Correlated Transient Response of Buried Cables and Lightning Channel Radiation of Return Strokes of Five Rocket‐Triggered Lightning Strikes

High Voltage, EarlyView.
ABSTRACT Data from five rocket‐triggered lightning flashes are adopted to analyse the correlated transient response of buried cables and lightning channel radiations. These five flashes have the same termination point that is right above the buried cables and involve a total of 32 return strokes.
Mi Zhou, Xiaoyu Lei, Li Cai, Jianguo Wang, Weihan Zhao, Jinxin Cao, Denglei Duan, Maorong Geng, Yadong Fan, Jianping Wang   +9 more
wiley   +1 more source

Study of Positive Corona Discharge of Needle Plate Electrodes in Airflow

High Voltage, EarlyView.
ABSTRACT For high‐speed moving objects such as aircraft and wind turbine blades, discharge occurs under strong airflow. Research on lightning attachment characteristics has been extensive, whereas the role of corona discharge in pre‐breakdown streamer development has received less attention.
Lei Lan, Zhengxian Du, Qiang Wu, Yeqiang Deng, Yu Wang, Zeliang Wu, Xiankang Wang   +6 more
wiley   +1 more source