ABSTRACT
Online food ordering (OFDO) services grew tremendously during the covid-19 pandemic due to rising health concerns and social distancing policies put in place. This research aims to examine the relationship between technology readiness level and intention to use OFDO services in Indonesia. Moreover, this research also incorporates the moderating effect of covid-19 pandemic. Surveys were distributed and data were analyzed using multiple regression. The results suggest that the driver variables (optimism and innovativeness) have significant positive effect on intention to use OFDO, while the inhibitor variables (insecurity and discomfort) have no significant effect on intention to use. Furthermore, the moderation of covid-19 situational effect shows significant results for all four variables. These findings suggest that OFDO services should brace themselves towards the end of the pandemic since the booster effect that it gets from the pandemic will soon be gone and they need to take extra measures to retain customers in the absence of the covid-19 pandemic. © 2022 IEEE.
ABSTRACT
Research related to geological materials that are useful for health in Indonesia (bio-geo-prospective) for health is still being developed. This article opens a new perspective on the possibility of using melatonin in bats guano rock in attenuating COVID-19 based on the prospect of its occurrence. The current outbreak of the COVID-19 virus is a pandemic that has infected hundreds of thousands of patients worldwide which certainly requires good medication. To determine the presence of bioactive chemicals in sediment rocks both qualitatively (types) and quantitatively (levels) can be done by analyzing the active compounds (compounds (chemical compounds that have medicinal properties). While obtaining these active compounds can be done by isolating the active compounds. The isolated pure compound can be further developed into modern medicine. A sensitive and validated method for the melatonin determination by developed High-performance liquid chromatography (HPLC) coupled with fluorescence detection with an extraction procedure of direct sample extraction (DSE) in measure melatonin levels in bats guano rock. The test validation shows that the use of this method is very successful as indicated by the high correlation coefficient value of 0.9997, the RSDs (n = 3) of 4.35% and the LOD values is 0.0236 (ng / g FW) and LOQ 0.1283 (ng / g FW). The average melatonin content in guano stones was 24+ 0.18 ng / g FW. © 2021, Rasayan Journal of Chemistry, c/o Dr. Pratima Sharma. All rights reserved.