ABSTRACT
In this investigation, Nb2O5-α-Fe2O3 nanocomposites were synthesized by modified sol-gel method. The obtained materials were characterized by different techniques such as powder X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), Brunauer-Emmett-Teller (BET), UV-vis diffuse reflectance (UV-vis spectroscopy). The catalyst was found to have a particle size in the region of 20-42 nm with a high surface area. The effects of the catalyst dose, the pH value, UV power, addition of H2O2 and scavenger on the photocatalytic efficiency were investigated. This study presents a strategy to eliminate highly toxic and persistent dyes such as DB 199 dye. It was observed that the nanocomposites showed maximum response with more than 80% degradation of DB 199 dye in 100 min.

ABSTRACT
The level of competition in the culinary sector continues to increase, both from national food businesses and the invasion of culinary company branches from abroad entering Indonesia. Customer satisfaction is the main key in winning the competition. The aim of this research is to examine the influence of food court aesthetics, customer emotions, and service quality on customer satisfaction at food courts in the East Jakarta area. This research succeeded in collecting data through a customer survey of 170 food court customers in Jakarta Timur Indonesia. The sampling method used in this research was convenience sampling. We use multiple regression analysis where customer satisfaction is the dependent variable and food court aesthetic factors, customer emotions, and the quality of service provided by the food court are exogenous variables. The collected data is then processed using the Smart PLS data processing tool. Partial Least Square measures two submodels, namely the outer measurement submodel or outer measurement model and the structural model or inner model or inner measurement submodel. The results of this research found that food court aesthetics, customer emotions, and service quality have a statistically significant effect on customer satisfaction. The implications and limitations of this research are also discussed in this article.

ABSTRACT
This study investigates the effect of methanolic root extract of Asparagus pubescens on the male reproductive system in rabbits. Male reproductive organs is essential for producing and maintaining sperm, secreting testosterone, and transporting sperm to the female reproductive tract, include the testicles and accessory organs such as the epididymis, vas deferens, and prostate gland. The testicles, being the primary site of sperm and testosterone production, play a critical role in male fertility. Experimental animals were divided into four treatment groups and corresponding control groups. The plant extract was administered at low (250 mg/kg) and normal (500 mg/kg) doses for 14 and 21 days, respectively. Control groups, which received no treatment, showed no abnormal physical observations. Fertility assays included female rabbits, all of which became pregnant, confirming the fertility of the male rabbits used. Post-mortem analysis of testes from treated groups revealed no gross pathological changes. Histological examination indicated no disruptions in spermatogenesis across all treated groups, comparable to controls. The absence of pathological changes suggests that Asparagus pubescens does not exhibit visible contraceptive effects on male reproductive organs based on histological techniques. Estrogen’s role in regulating fluid reabsorption in the male reproductive tract suggests that the extract’s antiestrogenic activity might produce a contraceptive effect. Further research is necessary to explore its potential as a male contraceptive.