There are huge, invisible structures in the ionosphere that are high above the surface of the Earth. These structures are ...

Exposure to stress triggers hormonal and behavioral responses. It has been shown that the endogenous opioid system plays a role in some physiological reactions to stress. The opioid system was ...

This paper introduces an innovative method for quantitatively determining plasma density in plasma columns, with particular applicability to reconfigurable antennas. This method significantly enhances ...