Nowadays, the transfer of blood products to emergency and relief services has become increasingly important, given that blood has no substitute and that humans themselves are the source of its production, as well as advances in medical science that have led to surgical and therapeutic approaches. A new one has made the need to supply blood products less expensive and time-consuming in the modern age, hence the location of blood collection and storage centers and their distances from demand points to raise the level of service. Given the importance of the topic in this research to modeling a chain, it is abundant The purpose of blood products has been to meet two specific goals, namely to reduce costs and service time of the chain by considering different local and regional blood transfusion centers and selecting the optimal location of mobile blood centers, as well as by considering hospital demand centers and Accidental points have been tried to create a suitable network of supply chains near these points. Finally, the model is implemented as a case study with information obtained from the location of units in Zanjan city and is analyzed through meta-heuristic algorithm and results obtained have been analyzed.
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