This is the 7290th most frequent Turkish word.
fakültesinde
"In the faculty of"
Here, 'fakültesinde' specifies the particular faculty of science within the university as the place where Ayşe studies.
Ayşe, üniversitenin fen fakültesinde doğa bilimleri okuyor.
Ayşe studies natural sciences in the university's science faculty.
In this sentence, 'fakültesinde' indicates the location of the engineering faculty, housing the laboratories.
Mühendislik fakültesinde birçok ilginç laboratuvar bulunmaktadır.
There are many interesting laboratories in the engineering faculty.
This usage of 'fakültesinde' expresses that the event (an exhibition) occurred in the specific arts faculty.