As mentioned in Lecture 10, CAS has taken the full list of CA Concept Headings and organized them in a hierarchical fashion, so that you can easily identify broader, narrower and related terms for your search.
Let's say that I'm undertaking the same search that I did above, but want to use the CAS Lexicon to enhance my search. Starting with electrochemistry:
Clicking on Launch CAS Lexicon brings us to this screen"
As I type in electrochemistry, a drop-down menu of terms appears. Selecting electrochemistry and clicking Search Concept, I get:a scrollable list of possible preferred terms, from which I must select one.
Selecting Electrochemistry, I get a scrollable menu of broader, narrower and related terms, from which I may select the ones to add to my query, with Add Terms:
Note that I can clear terms from the query and redo them. When I'm ready, I click the search icon.
If I now wanted to use the Lexicon to explore other terms, like phthalocyanine, I might wish to save my electrochemistry answer set (or selected portions thereof) so that I could later combine it with a phthalocyanine search. Alternatively, I could just use the Lexicon to suggest alternative terms, and enter them by hand into a keyword search.
© 2023 Charles F. Huber
This work by Charles F. Huber is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
Based on a work at guides.library.ucsb.edu
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