Would you possibly tell me which of them is more polished or fluent?
By carrying out due research and studies on the received scientific reports from/by someone
By carrying out due research and studies on the scientific reports received from/by someone
I made some mistakes, so I have edited this question.
(1) is not grammatical because the receiver is separated from “received.”
(2) is correct, however you should put an ellipsis after both examples to show they’re incomplete sentences.