It recommends articles based on your searches. Searching under PD brought up 164,000 articles and papers.
"ScienceDirect is the world's leading source for scientific, technical, medical research, peer-reviewed journals, books and articles."
"Your ScienceDirect account allows you to access the following research platforms:
ScienceDirect, Scopus, Mendeley, Evise, Elsevier Editorial System, SciVal, SciVal Funding, Engineering Village, Geofacets, Reaxys, Embase, ClinicalKey, PharmaPendium, Pathway Studio
Search less and discover more with personalized recommendations
Your account also offers you access to our Recommendations service, via email or on ScienceDirect. The more you interact with ScienceDirect while signed in, the more precise and relevant the recommendations will be. "