Research Regarding a Correlation Core–Shell Morphology–Thermal Stability of Silica–Silver Nanoparticles

Novel environmental applications of green tea: sensing and remediation of Ag+ in aqueous system

The strong fluorescence of green tea was quenched with Fe3+ because of ligand-to-metal charge transfer and subsequent formation of magnetite (Fe3O4) nanoparticles (heavy metal effect). Ag+ restored the lost fluorescence by confining iron particles (capped with Cl-) with the formation of AgCl. Thus, toxic Ag was sensed in the aqueous system with a linear detection range of 10-4 M to 10-7 M and a detection limit of 4.1 × 10-9 M. The sensing protocol was applied for natural samples to detect Ag+. Gallic acid was found to be the pivotal component in the tea extract used to design a sensing platform. The company of the green tea were also varied and obtained comparable results.

Anisotropy Influences on the Drug Delivery Mechanisms by Means of Joint Invariant Functions

In the frame of Higuchi's type functionality, this paper presents the anisotropy influences on the drug delivery mechanisms through the joint invariant functions to the simultaneous actions of the two SL(2R) isomorphic groups. Then, a new equation for drug delivery mechanism, independent of the type of polymer matrix and/or drug, is proposed.