Bioengineering databases

Chemistry and materials (abstracting and data services)

Chemical abstracts: SciFinder
1907 onwards.
All areas of chemistry and chemical engineering, including applied chemistry, biochemistry, macromolecular chemistry, organic chemistry and physical, inorganic and analytical chemistry. Suitable for materials information.

Engineering databases (abstracting services) 

Compendex 
1884 onwards.
All fields of engineering, including related areas of applied science, management, and energy. 

Inspec 
1969 onwards.
Physics, electrical engineering, electronics, computer science, control engineering and information technology.

Medicine

PubMed
PubMed comprises more than 25 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher websites.

Comprehensive Physiology (includes Handbook of Physiology)
A very useful resource for information on health and medical topics. According to their website, it is "the most authoritative and comprehensive collection of physiology information ever assembled, and uses the most powerful features of review journals and electronic reference works to cover the latest key developments in the field, through the most authoritative articles on the subjects covered".

Multidisciplinary databases

Science Citation Index Expanded (Web of Science) 
1970 onwards.
Natural, physical, earth, environmental, biomedical, and life sciences; chemistry, agriculture, clinical medicine, engineering, technology and applied sciences, and computer and information science.

ScienceDirect
Database of 2,500 journals and thousands of books published primarily by Elsevier.  Use this in conjunction with resources that cover citations from a wide range of publishers such as Web of Science or Scopus.

Scopus
Scopus is the largest abstracting and indexing database of peer reviewed literature in the world. It is useful for all subjects and particularly multidisciplinary subject areas.It has several easy to use tools and includes “cited by” information.  It has comprehensive coverage from 1996 onwards.

Wiley Online Library
A database of reference books and journals published by Wiley.  Use this in conjunction with resources that cover citations from a wide range of publishers such as Web of Science or Scopus.

Theses (abstracting services)

EThOS
Gives you access to over 250,000+ theses for free and you can also order the full text of theses if they are not yet available electronically.

ProQuest Dissertations & Theses Global
Covers doctoral dissertations accepted at accredited institutions worldwide and in all subject areas. Also includes Master's theses.

Standards

 ASTM Standards

British Standards Online 
Contains the full text of all British Standards, and includes records for over 38,500 British Standards.