1 Subjects: “...flow loop...”

2 Subjects: “...coal-direct chemical looping combustion...”

3 Subjects: “...closed-loop control...”

4 Subjects: “...closed-loop neurostimulator...”

5 Subjects: “...feedback loop...”

6 Subjects: “...casual loop diagrams...”

7 Subjects: “...closed-loop green supply chain...”

8 Subjects: “...closed-loop...”

9 Subjects: “...closed-loop scheduling...”

10 Subjects: “...chemical looping...”

11 Subjects: “...closed-loop control...”

12 Subjects: “...closed-loop control...”