Check out these databases if you are looking for scholarly articles.
Below are some databases that will be more relevant/useful for the "sciences." Be sure to "scroll" down through the box to see additional choices.
Open access, full text journal articles in physical sciences, engineering, life sciences, health sciences, social sciences, and humanities.
Your one true source for authoritatively identifying a chemical substance and its related chemical structures, chemical names, regulatory information, and properties, including CAS Registry Numbers®, reaction schemes, step-by-step experimental procedures, detailed conditions, and product yields.
Your one true source for authoritatively identifying a chemical substance and its related chemical structures, chemical names, regulatory information, and properties, including CAS Registry Numbers®, reaction schemes, step-by-step experimental procedures, detailed conditions, and product yields.
Here is a tutorial on how to find full-text articles.