The phrase "extensive studies over" is grammatically correct and can be used in written English.
It is typically used to indicate that a large amount of research or analysis has been done on a particular topic or subject. Example: "The article presents the findings of extensive studies over the past decade, confirming the link between sleep and overall health."
Although there have been extensive studies over the past decade in the synthesis and application of metal-organic frameworks (MOFs), investigation of their thermodynamic stability and of the energetics of guest host interactions has been much more limited.
Despite extensive studies over the past 40 50 years, the etiology of ALS is still far from clear.
Despite extensive studies over the last 20 years into the formation and nature of coke on zeolites, there is still much discussion and controversy on many questions.
Extensive studies over the last decade on the immunobiology of HCMV infection has provided detailed insight into the immune regulation of persistent HCMV infection in healthy virus carriers and individuals with HCMV-associated diseases [1].
The mechanisms by which HLA-B27 confers disease susceptibility to SpA have remained elusive despite extensive studies over the course of 30 years.
Besides this essential function in intermediary metabolism, extensive studies over the past years revealed that supplementation with carnitine has positive effects on performance characteristics (e.g. growth rate, reproductive performance, protein:fat accretion) in livestock animals [ 2– 6].
Not all of the discrepancies represent a potential security threat; the report said that more extensive study over the past few years found that 8,000 of the license holders were dead.
In fact, while there has been extensive study over the past couple of decades of the potential offered by such reinforcement (in both MMCs and other types of composite system), caveats are identified here concerning expected property combinations, particularly in terms of the toughness of such composites.
The identification of high-risk subsets of colon cancers has undergone extensive study over the years, and multidimensional gene signatures have shown promise for colon cancer.
"Further extensive studies would be needed over a large area and over many years," the report said.
There have been extensive studies with single-phase systems over the last 30 years.
