Maintains citations and abstracts for engineering and the applied sciences up to mid-June 2015.
Maintains an open-access collection of crystal structures of organic, inorganic, metal-organic compounds and minerals excluding biopolymers.
Indexes full text IEEE and IET journals, conference proceedings, and standards.
Indexes records of international scientific and technical articles in the fields of computer science, electrical engineering, and physics.
Archives Institute of Physics (IOP) full text journals from 1874 to the present. Covers physics, astronomy and mathematics.
Maintains full text proceedings, journals, and books published by SPIE on optics and photonics from 1990 to present.
Contains the full text of McGraw Hill's Encyclopedia of Science and Technology as well as Science News from 2000 to the present.
Provides open access to e-prints in physics, mathematics, computer science, quantitative biology, quantitative finance, and statistics.
Aggregates and indexes chemical structures and their associated information into an open access repository. Offers text and structure searches for compounds.
Provides citations to papers and poster sessions presented at major, international, scientific meetings.
Includes academic freely available ebooks.
Offers open access scientific and scholarly journals, thereby promoting their increased usage and impact.
Maintains a peer reviewed, PubMed-indexed journal that publishes biological, medical, chemical, and physical research in a video format.
Index to technical publications from the U.S. government. includes full text for reports from 1995 to the present.
Contains information on grey literature produced in Europe. Covers science, technology, biomedical science, economics, social science and the humanities.
Portland State University's Digital Repository, PDXScholar, preserves the University's research, unique resources, and other scholarly output with the goal of providng persistent, open access to that work.
Features selected, authoritative science information provided by U.S. Government agencies including research and development results.