The rapid evolution of wireless communication, including the deployment of 5G and the advent of 6G networks, has dramatically increased the complexity of antenna system design and optimization.

Then, the precursor is oxidized to realize a medium-entropy oxide/carbon [(CoNiCu)O/C] composite with a unique hollow microstructure. Due to the advantages of rich active sites in the hollow ...

According to the WHO, COVID 19 virus is spread by respiratory droplets and personal contact. To prevent the transmission of this virus, the use of masks and social isolation is recommended. Because ...

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