Maximum gain enhancement in wireless power transfer using anisotropic metamaterials.

We present an analysis for metamaterial (MM) enhanced wireless power transfer (WPT) that includes new results revealing the impact of magnetostatic surface waves and their degradation of WPT efficiency. Our analysis shows that the commonly used fixed loss model used by previous works leads to the incorrect conclusion regarding the highest efficeincy MM configuration. Specifically, we show that the "perfect lens" configuration provides lower WPT efficiency enhancement in comparison to many other MM configurations and operating conditions.

Epistaxis Risk Associated with Intranasal Corticosteroid Sprays: A Systematic Review and Meta-analysis.

Objective: Intranasal corticosteroids (INCSs) are widely utilized for the treatment of allergic rhinitis. Epistaxis is a known adverse effect of INCSs, but it is not known if the risk of epistaxis differs among INCSs.

Data Sources: Systematic review of primary studies identified through Medline, Embase, Web of Science, PubMed Central, and Cochrane databases.