This study aims to investigate the effect of alkaline pH on the bottom-up synthesis of nanocomposites (NCs) containing terbium sulfide nanoparticles (Tb2S3 NPs), where chitosan (CS) was employed as a capping agent, along with evaluation of the antibacterial activity of these NCs. The NCs were characterized using spectroscopy (FESEM-EDX, Raman, FTIR, XRD, XPS, and DLS), zeta-potential, and TGA. The results of FE-SEM, XPS, Raman, and FTIR characterization support the formation of CS-Tb2S3 NPs. A pH variation from 9 to 11 during composite formation was shown to affect the size and composition of NCs. The antibacterial activity of CS-Tb2S3 NCs was studied by coating onto commercial contact lenses, where the best loading efficiency of NCs was 48%. The NCs prepared at pH 10 (without contact lenses) had greater antibacterial activity against Staphylococcus aureus, with a zone of inhibition diameter of 7.15 mm. The coating of NCs onto commercial contact lenses was less effective for inhibition of Staphylococcus aureus, in contrast with the greater activity observed for tetracycline. CS-Tb2S3 NCs offer promising antimicrobial properties that can be further optimized by control of the surface loading and accessibility of Tb2S3 NPs through further study of the role of the chitosan capping agent, since steric effects due to CS are likely to attenuate antimicrobial activity via reduced electron transfer in such nanocomposite systems.
The purpose of this research is to find out the deconstruction of Peter Pan’s character in Kitsis’ and Horowitz’s work as described in Barrie’s Peter Pan. Kitsis’ and Horowitz’s Once Upon a Time, Season Three is the first film that deconstructs the character of Peter Pan from Barrie’s Peter Pan. The qualitative method is used in analyzing the main data that are taken from both works, Barrie’s Peter Pan and Kitsis’ and Horowitz’s Once Upon a Time, Season Three. The data analysis starts by selecting the data from re-watching and re-reading the works. Then analyzing them using the theory of deconstruction, character and characterization and cinematography. The theory is used to find the binary opposition and analyzing the characteristics of Peter Pan in both works. The cinematography is also needed to support the analysis and strengthens the argument of the analysis from the character’s deconstruction. The result of the analysis shows that the characteristic of Peter Pan in Barrie’s Peter Pan is deconstructed from hero into villain. It shows that there are four characteristics of Peter Pan as a hero that are deconstructed, namely, honest, fearless, polite and caring. Those characteristics are deconstructed into the character of Peter Pan as a villain who is manipulative, fearful, impolite and selfish. The four characteristics that are deconstructed can be seen from Peter Pan’s action towards other characters, from other characters’ explanation or the character’s emotions through every relevant scene in the film.
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