There are multiple definitions:

1. asymmetric counteranion-directed catalysis(English)

   • modern asymmetric catalytic approach
   • ILE
   • Biochemistry
   • https://doi.org…acs.joc.8b02101

2. alternating current direct current(English)

   • decreases delta band coherence between intact and damaged occipital brain areas indicating inhibition of low-frequency neural oscillations
   • FCN, NIBS, tACS, tDCS
   • Ophthalmology, Brain (dys)function
   • https://doi.org…eur.2021.729703

3. Automated Cardiac Diagnosis Challenge(English)

   • a dataset that is part of the MICCAI 2017 benchmark dataset for CMR image segmentation
   • ML, MRI, CMR
   • Medical imaging, Machine learning, Cardiology, Diagnostics
   • https://www.cre…Challenge/acdc/
   • https://doi.org…MI.2018.2837502