| Acronym | Meaning |
| R&D | Research And Development |
| LPUMP | L-fold (spin) Projected Unrestricted Moeller-Plesset |
| CCGT | Closed Cycle Gas Turbine |
| BTDA | 3,3',4,4'-benzophenonetetracarboxylic Dianhydride |
| FGDIS | Flue Gas Desulfurization Information System |
| USBM | US Bureau Of Mines |
| NPA | Natural Population Analysis |
| RAS | Restricted Active Space (wave Function) |
| PF | Protective Factor |
| TC-GME | Time-convolution Generalize Master Equation (in Quantum Tunneling Calcns.) |