A brief summary or description of the essential content from the source
Broader terms are found in the Major Concepts search aid. They are known to
be wider in scope than the one selected. Only the terms one level wider are
given. If a term has multiple broader terms, then more than one hierarchy will
appear. See also Narrower Term.
CAS Registry No.
The CAS Registry Number® is a five-to-nine digit number assigned
to chemicals mentioned in the source publication. Some chemicals may have
multiple registry numbers.
Descriptors are terms that are currently used in indexing product records.
DOI (Digital Object Identifier)
The Digital Object Identifier (DOI®) is a system for permanently
identifying and exchanging intellectual property in the digital environment.
Example: DOI: 10.1134/S1061920808010020
See http://www.doi.org for more
DOI® is a registered trademark of the International DOI
A DOI number can be associated with an article, a book, a book chapter, a
data study document, and other document types.
Items in a library collection. For example, a library's online catalog would
show whether the source publication is held in the library's collection.
The International Standard Book Number is a unique identifier that identifies
a work's national, geographic, or language, along with the publisher, title,
edition, and volume number. The format is a 10-digit number that contains 3
hyphens (-). The last digit is a check character, which may be a number or X.
The position of the hyphens can vary for each ISBN. Example:
The International Standard Serial Number is a unique number that identifies
the source publication. The format is four numbers, a hyphen (-), three numbers,
and then a check character that may be a number or X. Example:
A list of records that you marked from either the Results page or the Full
Record page. Once you add records to the Marked List, you can later print, save,
e-mail, order, or export some or all of those records. You have the option
to select records from the Total Records table to output or you can
select records from a specific product database.
Narrower terms are found in the Major Concepts search aid. They are generally
terms that are more focused in scope. Only the terms one level narrower are
given. If a term has multiple broader terms, all narrower terms may not
necessarily be in the same branch of the hierarchy. See also Broader Term.
Related terms are found in the Major Concepts search aid. They are generally
terms that have a close conceptual relationship to a Concept Code, but they are
not synonymous. Related Terms may be added to a search query.
Scope notes are found in the Concept Codes and Major Concepts search aids.
They generally describe how a term or code is used and/or provide historical
information about its use.
Search aids are tools that allow you to select predefined names, terms, or
codes and automatically add them with the appropriate syntax to a search query.
Search aids allow you to quickly and easily achieve consistent search results.
A set combination consists of two or more set numbers that you can run as a
unique search query. For example, #1 AND #3 combines the
results of set 1 and set 3 to form a single query. Set numbers appear under the
Set column in the Search History table.
You can also enter a single set number alone to refresh the results of a
previous search. In this instance, you may also want to change the timespan,
languages, document types, literature types, and Taxa Notes.
An article, patent, book, or other work represented by a record in the
product database. May also be referred to as "source publication" or "source
A system for naming and organizing plants and animals into groups that share
Terms are keywords that are used to index records. A keyword can be a single
word or several words. For example, enzyme is a term.