The role of DNA methylation of BDNF gene on clinical severity and cognitive performance in obsessive-compulsive disorder

The annual environmental impact of district heating (DH) piping networks was minimized by optimizing the pressure drop per unit length (PDPUL) of DH piping networks. An optimization model was developed to determine the optimal PDPUL and minimum annual total environmental impact (ATEI) of DH piping networks. An existing DH system in Yanan, China, was selected as a case study. Heat sources, operating strategies and design temperature regimes were...