The phrase 'volume of studies' is correct and can be used in written English.
You can use this phrase when referring to the sheer amount of research that has been conducted on a topic. For example: "In recent years, there has been a large volume of studies conducted on the effects of climate change."
The volume of studies increased slowly for several years — about 100 in all through 2007 — but has shot up recently: There have been over 100 published studies in each of the last four years, with about 300 being published in 2014 alone.
Although the resources of numerous investigators have been focused on studies of HIV-1-associated CNS disease, the complex nature of the disease processes that underlie the clinical, pathological, and cellular manifestations of HIV-1 CNS infection have required a larger volume of studies than was initially envisioned.
He is currently working on ancient elite exploitation of the rural environment and on a volume of studies of Egyptian kingship.
Increasing volume of studies have found a wide variety of diseases are associated with changes in the human microbiome, in particular the gut.
Large volume of studies devoted to characterization of individual thermo-physical properties of nanofluids, such as thermal conductivity, viscosity, and agglomeration of nanoparticles, has been summarized in a number of review articles [1 9].
Although relatively large numbers of pseudomonad phages have been found in many of the environments in which biofilms are formed, and despite the increasing volume of studies on pseudomonad biofilms, only few groups have examined the effect on biofilms of pseudomonad phages with associated EPS depolymerases.
On average, the mean age, VO2max, and training volume of study estimates were 26.3 ± 6.7 years, 61.8 ± 6.0 mL/kg min, and 12.0 ± 6.9 h/week, respectively (X̅ w ± SD w ).
The total volume of study solution was 100 mL in both groups.
There were significant decreases (p < 0.01) in the volume of study feeding and energy intake from study feeding from baseline to SD84 (Table 3).
The volume of study drug needed for adequate volume therapy until 6 hours after the end of surgery, the chloride level and the arterial pH at the end of surgery were recorded.
Total study formula intake: volume of study formula taken from admission until cessation of diarrhea or for a maximum of 120 hours if diarrhea continues, expressed in milliliters per kilogram of body weight.
