This is the 13550th most frequent Russian word.
научном
Scientific
Here, 'научной' modifies 'лаборатории' to describe it as scientific.
Он работает в научной лаборатории.
He works in a scientific laboratory.
In this sentence, 'научном' describes the type of language used, meaning scientific.
Статья была написана на научном языке.
The article was written in scientific language.
'Научные' in this instance describes 'исследования,' indicating they pertain to science.