When performing a search the user must specify three input fields:
- Searching scope: Title or Full document (referred to the original external databases).
- Dictionary: referred to the internally automatically generated (built in) dictionary, or alternatively, to the use of an external one (IUPAC).
- Words: a specific keyword related to the topic of interest should be selected from the drop-down menu.
Different primary searching sets are generated with each word. Further information processing is achieved using logical (Boolean) operators: AND, OR, AND NOT.See the simple example below
Example: we are interested on the effects of insecticides on non-target organisms (i.e., other than insects), for instance birds or mammals: The relevant keywords thus are the terms ‘insecticide’, ‘bird’, ‘mammal’.
First we proceed to build separately the corresponding sets with the three words selected:
Set #1: ‘insecticide’ (168 references)
Set #2: ‘bird’ (89 references)
Set #3: ‘mammal’ (22 references)
Secondly, we obtain separately the intersections (AND) of #1 with #2 and #3. To do so, the set #1 is selected in the first dropdown, the operator AND is selected in the second and the set # 2 is selected in the second dropdown selector. We get:
Set #4: ‘insecticide’ AND ‘bird’ (#1 AND #2) (50 references)
Set #5: ‘insecticide’ AND ‘mammal’ (#1 AND #3) (12 references)
Then we combine sets #4 and #5 since possibly both are sharing some common references. This is done by an OR operation:
Set #6: (#4 OR #5) (51 references)
The final 51 original references identified can be directly accessed by clicking the links shown in the Results Display Area.
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