Titanium dioxide (T1O2) is well known as the most active and stable semiconductor as an environmentally friendly photocatalytic material to degrade pollutants in aqueous and gas. In this research, TiO2 thin film was synthesized on a stainless steel surface using DC sputtering method. To enhance the photocatalytic activity, the TiO2 thin film was doped with a silver (Ag) also using DC sputtering method. The surface morphology, chemical composition, and crystal structure of the thin film were characterized using scanning electron microscopy –energy dispersive spectroscopy (SEM-EDX) and X-rays diffraction (XRD), respectively. Based on SEM-EDX analysis, it’s found that the content of silver (Ag) is 10.5 % weight or 2.56 % at.. This condition was achieved for 2 minutes of deposition time. The photocatalytic activity of TiO2 and TiO2-Ag thin film was studied using UV light and sunlight. As a model pollutant, it’s used methylene blue. It’s found that, if the film exposure using UV light, the absorbance for TiO2 film is 35.85 % and 64.26 % for TiO2-Ag thin film. If the film exposure using sunlight, the absorbance for TiO2 film is 17.5 % and 76.74 % for TiO2-Ag thin film. It can be concluded that the effect of Ag doping can enhance the photocatalytic activity of the thin film.

This study aims to analyze the effect of the Gender Ratio on Life Expectancy (GLE), Gender Ratio on Mean Years of Schooling (GMYS), Gender Ratio on Labor Force Participation Rate (GLFPR), and Gender Ratio on Per Capita Expenditure (GPE) on labor productivity in all Regency/cities of West Java Province. The sampling in this study used a saturated sampling technique in 27 Regency/cities of West Java Province during 2015-2020 so that a total sample of 162 data was obtained from the Central Statistics Agency (BPS) of West Java. This study uses panel data analysis by combining time-series data and cross-section data. The results partially show that RLE and RLFPR have a significant positive effect on labor productivity, while RPE has a significant negative effect on labor productivity, and RMYS has no effect on labor productivity. The results of the study simultaneously showed that RLE, RMYS, RLFPR, and RPE had an effect on labor productivity.