"vigorous study" is correct and usable in written English.
You can use it to refer to studying something intensely and giving great effort. For example, "I'm preparing for my exams by putting in a lot of vigorous study."
Related: Why 'climate-smart agriculture' isn't all it's cracked up to be There can be no doubt that humanure composting deserves vigorous study and investment because it's one of the best low-tech approaches to collecting and processing human and other organic wastes.
The research of graphene and/or derivative graphene sheets (GSD -reinforced rubber nanocomposites for technological applications such as; strain-sensitive materials, thermal insulators, gas barrier materials, and oil/gas sealing etc. is a fascinating area, which is still under vigorous study.
In 2010, over 400,000 comments from the public were submitted to the FDA, calling for more vigorous study on the effects to the environment and human health.
There are vigorous studies for paintings that are not in the show.
In contrast to vigorous studies of pH shifting of GadB, mesophilic GadB has not been stabilized by protein engineering.
Despite these vigorous studies, the expected magnetic long-range order has not been achieved yet, probably because these attempts are limited for 2D system.
Vigorous studies over the last decades have provided indisputable evidence that tobacco products cause genetic changes that underlie the development of cancer.
Although vigorous studies have greatly improved the knowledge of colorectal tumorigenesis, the relevant factors that contribute to metastasis are still not well determined, which is urgently required for the early detection and treatment of metastatic CRC.
The availability of ribosomal loading data and their analysis (Xia et al. 2011) may eventually lead to an index of translation initiation to facilitate more vigorous studies of codon adaptation.
"A mortality reduction of 40% was associated with a moderate use of time (30 minutes, six days a week) irrespective of whether the activity was light or vigorous," their study said.
We carry out vigorous performance study using computer simulations.
