Science Direct                     

Science Direct offers more than a quarter of the world's scientific, medical and technical information online. The subject coverage broadly includes all aspects of Physical Sciences and Engineering , Life Sciences , Health Sciences , Social Sciences and Humanities. It includes over 2,000 p eer-reviewed journals and over 8,057,764 Articles. 

         Science Direct also includes over hundreds of book series, handbooks and reference works. Its Backfiles program offers the ability to search a historical archive of over 6.75 million articles directly from the desktop, back to Volume 1, Issue 1. The collections contain 4 million articles prior to 1995, and 2.75 million articles from after 1994.   

             Science Direct provides the following services and searching options: Top-25 articles in my subject area,  My Settings, Alerts,  Finding a Journal or Publication, Quick Search, Basic and Advanced Search, Search Within Results, Search Using Scirus, Save Search, Recall Saved Searches  ,  Saving a Search History.