There are multiple definitions:

1. ab initio molecular dynamics(English)

   • combines classical Newton's laws for atomic motion with quantum mechanical forces calculated "on-the-fly" using methods like Density Functional Theory (DFT), allowing simulations of complex chemical systems (liquids, solids, reactions) without needing pre-fitted parameters, capturing accurate dynamics, polarization, and quantum effects crucial for understanding materials and chemical processes
   • DFT, MD
   • Biochemistry, Biophysics
   • https://doi.org…pnas.0500193102

2. antibiotic-induced microbiome depletion(English)

   • has been used frequently to study the role of the gut microbiome in pathological conditions
   • ETT, GSH, NMDA, SCFA, SIRT
   • Microbiome, Bacteriology, Gastroenterology, Pathology
   • https://doi.org…467-018-05336-9
   • https://doi.org…9/ars.2021.0043