Nature

Low-frequency ultrasound causes brain edema and intracerebral necrosis in rats

The effectiveness of thrombolysis in acute stroke treatment can be enhanced by transcranial ultrasound, which has been shown to improve recanalization rates. Ultrasound in the low-frequency (kHz) ...

Missing technosignatures? Turbulent plasma may blur ultra-narrow signals before they leave their home star systems

A new study by researchers at the SETI Institute suggests that stellar "space weather" could make radio signals from extraterrestrial intelligence harder to detect. Stellar activity and plasma ...
Investopedia

Dividend Frequency Explained: How Often are Dividends Paid?

Andy Smith is a Certified Financial Planner (CFP®), licensed realtor and educator with over 35 years of diverse financial management experience. He is an expert on personal finance, corporate finance ...
Investopedia

Understanding RFID: How Radio Frequency Identification Works Efficiently

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...
IEEE

Frequency-Based Beamforming Framework for Virtual-Source Ultrasound Imaging

Abstract: Beamforming methods have been widely applied to medical ultrasound imaging to improve image quality. Although the state-of-the-art time-domain beamformers are able to produce refined ...
IEEE

Frequency-Aware B-Line and Pleural Line Analysis in Lung Ultrasound Videos

Abstract: Accurately identifying B-lines and pleural line (P-line) in lung ultrasound (LUS) videos is valuable for evaluating certain lung conditions. However, manual interpretation remains subjective ...