Using mobile technology in assessment of entrustable professional activities in undergraduate medical education.

Background: The adoption of competency-based medical education requires objective assessments of a learner's capability to carry out clinical tasks within workplace-based learning settings. This study involved an evaluation of the use of mobile technology to record entrustable professional activity assessments in an undergraduate clerkship curriculum.

Approach: A paper-based form was adapted to a mobile platform called eClinic Card.

A modified multisite Stern-Volmer equation for the determination of conditional stability constants and ligand concentrations of soil fulvic acid with metal ions.

In this work, we modify the multisite Stern-Volmer (MSV) equation for fitting fluorescence titration curves. Under the condition of a static quenching mechanism, the MSV postulates an underlying 1:1 fulvic acid (FA)/copper coordination ratio at multisites. Approximates of six fitting parameters characterize the stability constants (K1 and K2) of FA ligands with Cu2+, micromolar ligand site concentrations (CL1 and CL2), the unquenched, steady-state fractional fluorescence contributions (fx), and the residual fluorescence intensity (IRES).

Multi-wavelength fluorescence-quenching model for determination of Cu2+ conditional stability constants and ligand concentrations of fulvic acid.

In this work, a multi-wavelength model (MWM) is developed. It uses fluorescence bands in the fulvic acid (FA) spectrum that quench upon binding of inorganic Cu2+ to FA. Quenching data at pH values of 5, 6, and 7 are placed in sets, containing fluorescence measures at select wavelengths versus added copper (CM).