This is the 12607th most frequent Polish word.
naukowej
The Polish word "naukowej" means "scientific" (feminine singular or genitive singular).
The word 'naukowej' is serving as an adjective modifying 'grupy', indicating the type of group being referred to, which is scientific.
Jestem członkiem naukowej grupy badawczej.
I am a member of a scientific research group.
Here, 'naukowej' modifies 'treści', showing the nature of the content (scientific).
Książka naukowej treści jest niezwykle pouczająca.
A book with scientific content is extremely informative.
In this case, 'naukowej' modifies 'analizy', expressing the type of method of analysis (scientific).