| Acronym | Meaning |
 | EPTC | Extraction Procedure Toxicity Characteristic |
 | DBMS | Data Base Management System |
 | DMSP | Defense Meteorological Satellite Program |
 | CAE | Cis-acting Element |
 | RSCF | Relativistic Self-consistent Field |
 | IXS | International XAFS Society |
 | PPQ | Parts Per Quadrillion |
 | CCPE | Charge Core Potential Energy Method (for Conformational Analysis) |
 | OLCAO | Orthogonalized Linear Combination Of Atomic Orbitals |
 | DQO | Data Quality Objectives |