A non-reciprocal element with three central conductors and a communication apparatus are disclosed, in which the insertion loss is small and the bandwidth is wide. The system can detect a change in value of a server attribute of a first server node. The quantitative and organizational parameters are normalized and input to a decision model that generates a recommendation that indicates exclusive use of a private cloud or a hybrid private cloud and public cloud to execute the application. The presence of HFO and calcium magnesium silicates in HIM synergistically provide a precipitous drop in pH, which is characteristic of the concentration and type of toxic heavy metal.