This research investigates a model of the spread of COVID-19 in Indonesia by paying
attention to comorbid disease, self-quarantine, government-provided quarantine, and …

In this research, we study a dynamical system of total nitrogen transformation in a mangrove-
filled constructed wetland. The system's variables are the mangrove biomass concentration …

Background: The ongoing COVID-19 pandemic has posed significant global challenges; its
impact in Africa, in particular, has been a subject of increasing concern. Vaccination against …

Abstract The Aedes Aegypti mosquito is the primary vector that can transmit diseases to
humans such as zika, dengue fever, chikungunya, and yellow fever. This mosquito species …

Palm oil industry has become an issue that has caught the attention of the world community
in recent years. From an economic point of view, this industry is very influential in developing …