Sensitive and accurate photoluminescent-multiphonon resonant Raman scattering dual-mode detection of microRNA-21 via catalytic hairpin assembly amplification and magnetic assistance.

A novel dual-mode detection method for microRNA-21 was developed. Photoluminescent (PL) and multiphonon resonant Raman scattering (MRRS) techniques were combined by using ZnTe nanoparticles as signal probes for reliable detection. The catalytic hairpin assembly (CHA) strategy was integrated with superparamagnetic FeO nanoparticle clusters (NCs) to enhance sensitivity.

Corrections of fast neutron inelastic scattering effects on D-T neutron porosity logging.

With the continuous development of logging tools with controllable neutron sources, improving the processing method to make their measurements more consistent with those obtained by chemical sources has become a development trend in well logging based on controllable sources. To study the correction method that is not constrained by other parameters and does not require chemical sources, the reasons for the differences in the neutron porosity responses of D-T and chemical sources are theoretically analyzed. Then the fast neutron slowing-down process is divided into two stages depending on neutron energy.