Author Archives: Ragy Ragheb


Published 12 Mar 2019

Determining the quality of asphalt emulsions using particle size and zeta potential analysis

What are asphalt emulsions and why are they important? They are liquid asphalt cement emulsified in water. They compose of bitumen, water, and an emulsifying agent or surfactant. Asphalt emulsions are integral to the optimum mechanical properties. Modified asphalt emulsions…READ MORE >

Tags: , , , ,

Published 20 Feb 2019

Zetasizer use for mRNA-based drug delivery systems: a short review

Messenger RNA (mRNA) based systems have recently attracted considerable attention for their use in the delivery of functional antibodies and therapeutic proteins. Both viral and non-viral vectors, including liposomes, polymeric nanoparticles, and mRNA-protein complexes, have been studied in clinic. Significant…READ MORE >

Tags: , , , ,

Published 24 Oct 2018

Characterizing Liposome Formation, Structure, and Stability

Liposomes have been attractive delivery systems for decades due to their composition of natural biological lipids and structural resemblance to cell membranes suggesting metabolic compatibility, low toxicity, biocompatibility and lack of a strong immune response1.  They are comprised of spherical…READ MORE >

Tags: , , , ,

Subscribe