Aerosol Fluorescent Labeling via Probe Molecule Volatilization.

The physicochemical properties of aerosols, including hygroscopicity, phase state, pH, and viscosity, influence important processes ranging from virus transmission and pulmonary drug delivery to atmospheric light scattering and chemical reactivity. Despite their importance, measurements of these key properties in aerosols remain experimentally challenging due to small particle sizes and low mass densities in air. Fluorescence probe spectroscopy is one of the only analytical techniques that is capable of experimentally determining these properties in situ in a nondestructive and minimally perturbative manner.

Economic integration and survival of Ghana's manufactured and agriculture raw material exports.

The paper investigates the effects of economic integration agreements on the survival of Ghana's manufactured and agriculture raw material exports. Using annual trade data for Ghanaian manufactured and agriculture raw material product exports from 1988 to 2018 and a discrete-time proportional hazard model, we found that economic integration agreements enhance the survival of manufactured products and agriculture raw material exports. The Non-Reciprocal Preferential Trade Agreement is the most survival-enhancing.