Reverse logistics planning research of building waste from perspective of closed supply chain in urban sustainable environment governance.

The resource utilization of building waste in urban sustainable environment governance is significant, in view of the status of construction waste recycling; this article built a reverse logistics planning model in urban building waste from the perspective of a closed supply chain by means of a hybrid nonlinear programming model. Combining the simulated annealing algorithm with memory function and the genetic algorithm with global convergence performance, a new genetic simulated annealing algorithm is presented to optimize the model. The empirical study was then made for the system to verify the feasibility of the model. The proposed new planning method and its detailed steps can provide a meaningful reference value for resource utilization of building waste in urban sustainable environment governance.

The research progress on nutritional risk and nutritional support in children with sepsis / 中国小儿急救医学

Sepsis is a major problem in the pediatric critical care medicine.The related research indi-cates that the nutrition risk may be one of the risk factors that affect the incidence and mortality of sepsis. Through nutritional risk screening and assessment,it can be used to provide reference for assessing the nutri-tional risk,the nutritional support and the effect of nutritional support on prognosis of children with sepsis.At present,there are few studies on the nutritional risk and nutritional support in children with sepsis.In this arti-cle,we reviewed the research progress on nutritional risk and nutritional support in children with sepsis.