Articles are found both in journals and in collections of essays (such as the papers presented at a conference, and later edited for publication). The bibliographic databases presented here generally index both journals and collections of essays. Academic Search Premier, which is a general, interdisciplinary database, even indexes popular magazines, although one can limit a search to peer-reviewed journals. The other resources here are specific to Egyptology, or to other topics that may be relevant to ancient Egypt.
You can also search for articles in the search box on the Library's main web page, although you will only find articles that the Library has in digital form.