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In this paper, we obtain accurate analytic free vibration solutions of rectangular thin cantilever plates by using an up-to-date rational superposition method in the symplectic space. To the authors’ knowledge, these solutions were not available in the literature due to the difficulty in handling the complex mathematical model. The Hamiltonian system-based governing equation is first constructed....
An aptamer-based colorimetric method for the detection of 17β-estradiol was established by employing AuNPs as the colorimetric probe. This assay was based on the principle that the salt-induced aggregation of AuNPs could be controlled by the adsorption of aptamers on the surface of AuNPs, which was modulated by the specific recognition of aptamers with targets. The method was successfully applied...
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