The three Boolean operators are AND, OR and NOT. You will see these options in the drop down searchbox menu of most databases. Boolean Operators are used to connect your search terms. When searching electronic databases, journals, and even the online catalog, you can use Boolean operators to either narrow or broaden your search.
For example, if searching for information on abnormal human chromosomes, you could search for "Human Chromosomes" AND Abnormal. If you wanted information on human chromosomes but were not interested in abnormal chromosomes, you could eliminate those results by selecting "Human Chromosomes" NOT Abnormal.
Databases Will Give you Search Terms!
When looking for articles, there may be times where resources are limited. In cases like these, always look for articles that are relevant and their associated search terms. For example, see the article page below. Each article comes with correlated search terms that are hyperlinked.
Once you find an article you could use for research, click on an associated search term that works for you, and that will lead you to other articles with the same search terms. This can be used in any database or journal. It also works in DiscoverE (the Emory Catalog) when searching for physical book titles.
Brainstorming synonyms or variations on words yields a more productive search strategy.
Adjust your searches by narrowing the focus or by combining research terms. Do background reading to find more keywords. For your introduction, you are discussing leaf strength. Some keywords to combine with Leaf might include:
Leaf AND integrity; leaf AND architecture; leaf AND architecture AND membrane: leaf AND breakdown
Once you type in your search terms, use the "Refine my results" list on the left-hand side to help narrow down your search by: