Green hydrogen is a crucial component in the transition to a low-carbon economy. However, large-scale production is limited by geographical conditions in many regions, which requires hydrogen imports to meet demand. To ensure supply security and avoid dependence on singular exporters, sourcing...

Optimizing solid waste management (SWM) is essential for ensuring a sustainable and healthy environment in a city. This study considers a two-echelon solid waste logistics system (2E-SWLS) in a metropolitan city with a fleet of capacitated heterogeneous vehicles. The problem consists of waste...

This study presents a multi-objective optimization model for blood supply chain (BSC) management, aiming to maximize total profit and fulfillment rate and minimize carbon emissions. The model is formulated as a mixed-integer linear program (MILP) and solved using the weighted sum method. The...