Articles with "frequency peak" as a keyword



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DNP-NMR of surface hydrogen on silicon microparticles.

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Published in 2019 at "Solid state nuclear magnetic resonance"

DOI: 10.1016/j.ssnmr.2019.04.008

Abstract: Dynamic nuclear polarization (DNP) enhanced nuclear magnetic resonance (NMR) offers a promising route to studying local atomic environments at the surface of both crystalline and amorphous materials. We take advantage of unpaired electrons due to… read more here.

Keywords: silicon microparticles; hydrogen; nmr surface; silicon ... See more keywords
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Strong random noise attenuation by shearlet transform and time-frequency peak filtering

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Published in 2019 at "GEOPHYSICS"

DOI: 10.1190/geo2018-0500.1

Abstract: Directional wavelet transforms combined with coefficient thresholding are very competitive in denoising seismic signals. However, these techniques struggle when the coefficients of signal and noise have comparable magnitudes. To better address this problem, we have… read more here.

Keywords: random noise; frequency peak; peak filtering; frequency ... See more keywords