Databases INDEX

The CrossFire Beilstein database is the world s largest compilation of chemical facts. This database indexes three primary data domains substances, reactions and literature. The substance domain stores structural information with aU associated facts and literature references, including chemical, physical and bioactivity data. The reaction domain details the preparation of substances, enabling scientists to investigate specific reaction pathways with reaction search queries. The literature domain includes citations, titles and abstracts, which are hyperhnked to the substance and reaction domain entries. It contains over 320 million experimental data, over 10 million reactions and data indexed from over 175 journals. 

Chung, P. W. H. Jefferson, M. 1997. Accident Databases - Indexing and Retrieval. EC/EPSC seminar on "Lessons Leamt from Accidents", Linz, 16-17 October. 

GenTest. (2003) GenTest http //www.gentest.com/human p450 database/index. html. 

Formulae (empirical, molecular and structural formulae as described below) provide a simple and clear method of designating compounds. They are of particular importance in chemical equations and in descriptions of chemical procedures. In order to avoid ambiguity and for many other purposes, e.g. in databases, indexing, etc., standardization is recommended. 

Keeping all relevant databases up to date, both internal and external, can be a difficult task. Databases can be updated irregularly and updating them is a routine but cumbersome task. Once the databases have been down-loaded from their repository, certain tasks must be performed. These include possibly reformatting the data, combining with other data to make new databases, indexing the databases. 

Models of pathways exist in many forms but most of these are static representations, not dynamic models of metabolism. They show the network topology of interconnected pathways of enzymes or signalling molecules, but they contain no dynamic information on reaction rates of diffusive encounters. The JWS-online database (http //jjj.biochem.sun.ac.za/database/index.html) on the other hand, is a web-based database containing over 90 dynamics models. Of these however, only a few are approaching what is desired. 

Modify. bashrc file to add the database indexes to the system path ... 

NASA Technical Report Server (NTRS) http //ntrs.nasa.gov (accessed Septanber 5, 2010), Lithicum Heights, MD NASA Center for Aerospace Information. NTRS provides fiee public access to NASA-generated technical reports and other publications from NASA authors. Some publications from non-NASA sources are included as well. The database indexes NASA materials back to the beginning of the agency in 1958, and also covers NACA reports back to 1917. All unclassified and unlimited NASA reports are indexed in NTRS. Many full text versions of NASA reports are in the database, particularly from those published in 2004 and later. 

MathSciNet http //www.ams.org/mathscinet/ (accessed August 2, 2010). MathSciNet is the most comprehensive database for mathematics, produced by the American Mathematical Society (AMS), and covering the world s mathematical literature since 1940. It is analogous to the print publication Mathematical Reviews and also includes recent issues of Current Mathematical Publications. The database indexes journal articles, conference proceedings, and books. The database is organized by the Mathematics Subject Classification (MSC). This database is important to computer engineers who want to research fundamental theories in mathematics related to their discipline. 

We thank Sophia Kossida, Jason Comander, and Yonatan Grad for their helpful suggestions and discussion of the computational screen design and ScanACE and BLAST analysis. The databases used in this work are Flybase (http // www.flybase.org), WormBase (http //www.wormbase.org), and WormPD (http // www.proteome.com/databases/index.hlml). 

The support table contains atom counts for carbon, hydrogen, nitrogen, oxygen, sulphur and the other elements. Counts for the other elements are encoded and packed into a single database column. Database indexes are created on carbon count (CCNT) and hydrogen count (HCNT) and are used to implement fast searches for exact formulae as well as for formula queries with variable acceptable range counts for elements (e.g., SELECT FROM COMPOUND WHERE MF= C20-22 N4-6 08 S CLO ). As with structure searching, the ADT shell translates... 

The different information types that are present in chemical databases require different techniques for the indexing and retrieval of the various information units. All these techniques for information retrieval demand a good knowledge of both the database indexing policy and the specific functions of the information retrieval system. Most databa.ses contain text information and it is therefore necessary for all users of databases to understand the principles of text indexing and retrieval. Numerical databases are based on either properties. 

---