Results 71 to 80 of about 27,214 (278)

Epoxy Coating as a Novel Method to Prevent Avian Electrocutions and Electrical Faults on Distribution Pylons with Grounded Steel Crossarms

Birds
Electrical faults caused by power escaping electric systems can lead to power outages, equipment damage, and fires. Faults sometimes occur when birds perched on power structures are electrocuted.
Mahmood Kolnegari, Ali Akbar Basiri, Mandana Hazrati, Anaïs Gaunin, James F. Dwyer   +4 more
doaj   +1 more source

Optimization of MRR and Surface Roughness for 7024 AL-alloy in EDM Process [PDF]

Engineering and Technology Journal, 2017
Electro discharge machining is major non-traditional operations for cutting the materials due to its suitability and benefits. The experimental work of this paper deals with electrico discharge machining (EDM).
M.M. Abdulrazaq, S.K. Ghazi
doaj   +1 more source

In Situ X‐Ray Tomography and Acoustic Emission Monitoring of Damage Evolution in C/C‐SiC Composites Fabricated by Liquid Silicon Infiltration

Advanced Science, EarlyView.
This study investigates how the internal structure of fiber‐reinforced ceramic composites affects their resistance to damage. By combining 3D X‐ray imaging with acoustic emission monitoring during mechanical testing, it reveals how silicon distribution influences crack formation.
Yang Chen, Renato S. M. Almeida, Stefan Flauder, Guillaume Couégnat, Kamen Tushtev, Jürgen Horvath, Peter Wriggers, Kurosch Rezwan   +7 more
wiley   +1 more source

Escrita e Desenho: Análise de registros elaborados por alunos do Ensino Fundamental em aulas de Ciências

Revista Brasileira de Pesquisa em Educação em Ciências, 2011
Com o olhar voltado para os registros escritos e desenhados produzidos pelos alunos do Ensino Fundamental, buscamos perceber a construção do conhecimento sobre temas das ciências e as relações dos mesmos com situações de nosso dia-a-dia por meio das ...
Lúcia Helena Sasseron, Anna Maria Pessoa de Carvalho   +1 more
doaj  

Unraveling the Power of Disorder: A Bioinspired Cuttlebone Structure With Superior Strength, Energy Absorption and Isotropy

Advanced Science, EarlyView.
Cuttlebone‐inspired architected metamaterials introduce controlled structural disorder to simultaneously enhance strength, energy absorption, and compressive stability. Tunable disorder suppresses shear anisotropy, outperforms periodic lattices, and establishes discrete randomness as a robust route to high‐performance lightweight mechanical ...
Zengqin Shi, Peng Jiang, Xiaoyan Zhu, Suyun Li, Wenqing Wang, Tian Zhao, Rujie He, Ying Li   +7 more
wiley   +1 more source

EDM process through mathematical model [PDF]

, 2019
EDM is a well-established hole machining option with various advantages due to non-contact characteristics of the process. However, knowledge about the process is not enough for its more improvements.
Azli Yahya, Dehghani, D., Nor Hisham Khamis, Yahya, A., Dana Dehghani, Alzaidi, A. I., Ali Idham Alzaidi, Khamis, N. H.   +7 more
core   +1 more source

Assessing the effectiveness of the Pregnancy And Newborn Diagnostic Assessment system on the quality of antenatal care in Burkina Faso: A cluster-randomised controlled trial

Digital Health
Introduction The Pregnancy and Newborn Diagnostic Assessment (PANDA) system is a mobile application designed to facilitate diagnosis and decision-making by healthcare staff in antenatal care (ANC).
Abou Coulibaly, Armel Emmanuel Sogo, Nutsa Chikvaidze, Cecilia Capello, Tsion Kefene Gerbaba, Séni Kouanda   +5 more
doaj   +1 more source

Study of the thermal erosion, ejection and solidification processes of electrode materials during EDM

Engineering Applications of Computational Fluid Mechanics, 2019
Due to the complexity of electrical discharge machining (EDM), there is no perfect theory to explain the mechanisms of material erosion, ejection and solidification during the machining process.
Shengfang Zhang, Wenchao Zhang, Hao Chang, Yu Liu, Fujian Ma, Dapeng Yang, Zhihua Sha   +6 more
doaj   +1 more source

Hierarchical Twin Networks Enable Exceptional Strength and Fracture Toughness in Titanium

Advanced Science, EarlyView.
A commercial‐purity titanium with hierarchical ultrafine twin structures delivers an exceptional combination of fracture toughness (KJIc) of 187 MPa·m1/2 and specific yield strength of 140 MPa·cm3·g−1, in which pre‐engineered high‐density twin boundaries stimulate massive and dislocations to blunt crack tip.
Xiao‐Wei Zou, Ting Zhu, En Ma, Wei‐Zhong Han   +3 more
wiley   +1 more source

Strain Tuning the Occupation of Candidate Topological Weyl States in W‐Doped MoTe2

Advanced Science, EarlyView.
The present study investigates strain‐induced modifications of the electronic structure in the Weyl semimetal Td${\rm T}_d$‐Mo0.91W0.09Te2${\mathrm{Mo}}_{0.91}{\mathrm{W}}_{0.09}{\mathrm{Te}}_{2}$ using hard X‐ray angle‐resolved photoemission spectroscopy.
Amon Lanz, Olena Tkach, Yaryna Lytvynenko, Florian Diekmann, Harshit Agarwal, Sofia Michaela Souliou, Mehdi Frachet, Michael Merz, Sergii V. Chernov, Andrei Gloskovskii, Volkmar Koller, Dmytro Kutnyakhov, Moritz Hoesch, Christoph Schlueter, Philipp Rüssmann, Yuriy Mokrousov, Matthieu Le Tacon, Kai Rossnagel, Jure Demsar, Gerd Schönhense, Hans‐Joachim Elmers, Olena Fedchenko   +21 more
wiley   +1 more source