Abstract: High-power continuous-wave (CW) single-longitudinal-mode emission at 3.64 mum is obtained from an optically pumped distributed-feedback (DFB) laser. The Bragg stopband and two degenerate DFB ...

State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, P. R. China Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, ...

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aPopulation Health Sciences Institute, Faculty of Medical Sciences, Biomedical Research Building, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, NE4 5PL, UK bCambridge ...

Abstract: When guided waves encounter defects, they generate echoes, enabling the determination of defect location and severity. However, detecting and characterizing large-area corrosion pits poses ...

We used unit data from large-scale population-based surveys, namely, the Longitudinal Aging Study in India (LASI), wave 1, conducted during 2017–18. A brief description of the data structure of the ...

Make waves without getting wet. With just a Slinky and your hands, model transverse wave resonances as well as longitudinal wave resonances. Learn about nodes and antinodes of motion and compression.

SYDNEY - The world’s poorest nations face a “tidal wave of debt” as repayments to China hit record highs in 2025, an Australian think-tank warned on May 27 in a new report. China’s Belt ...

and a Democratic wave. This is still a rough estimate; our calculations applied a uniform swing to the 2024 House results, without considering the specifics of individual candidates or races.

The National Hurricane Center is monitoring two tropical waves in the Atlantic basin, one in the central Atlantic and one in the Caribbean. No tropical cyclone activity is expected in the next ...

Kyiv, Ukraine — Russia launched its biggest drone attack on Ukraine overnight since the more than three-year war began, a Ukrainian official said Monday. President Trump said Russian leader ...