-peer reviewed open-access articles in medicine and biology.

-provides free medical literature, with 400 journals.

-a free archive of life science journals

-Covers access to journals in chemistry, biochemistry and its related subjects.

-Published by the Johns Hopkins University – Applied Physics Laboratory, the journal focuses on “missile, radar, sonar, sensor, chemical biological, and information technologies; space science and engineering, microelectronics; communications; navigations; modeling and simulation; advanced research and technology development.”

-SJI publishes peer-reviewed open-access journals for all disciplines. SJI has assembled the most prestigious and extensive Editorial and Advisory Board in the world, representing scholars from Princeton, Yale, Oxford, Harvard, Cambridge, MIT, Columbia and other leading universities from around the world.