The phrase "a number of rigorous" is correct and usable in written English.
It can be used when referring to multiple rigorous methods, processes, or standards in a specific context, such as research or evaluation.
Example: "The study employed a number of rigorous methodologies to ensure the validity of the results."
Alternatives: "several strict" or "multiple thorough".
A statement read: "Tate has undertaken a number of rigorous processes to ensure the welfare of the birds in Oiticica's Tropicália.
A number of rigorous evaluations show that those who receive cash are more likely to start their own business, earn more and send their children to school rather than into work.
The majority of Brendan Rodgers' squad were given the day off on Monday following the 2-0 FA Cup third round victory over Oldham Athletic, but Sturridge was in attendance at Melwood with the head of performance Glen Driscoll, going through a number of rigorous tests.
A number of rigorous epidemiological studies, however, have found direct associations between neighborhood availability of recreational outlets and overweight.
The study team used a number of rigorous and replicable sampling techniques to identify the sub-national areas, the facilities, and the individuals included in the ORPHEA study.
I entered a public International Baccalaureate school, which would let me take a greater number of rigorous courses.
The modified method was also compared with non-surrogate assisted optimization algorithms, achieving similar near optimal solutions with a lower number of rigorous simulations.
Pediatric massage therapy (MT), similar to its younger counterpart infant massage, has a limited number of rigorous studies supporting its clinical application and associated effects.
The main body of evidence is found in COPD-COLD patients, with not only case reports or uncontrolled small series but also a consequent number of rigorous physiological study and RCTs.
The numerical results show that average better and more stable solutions were obtained and a lower number of rigorous model simulations were needed comparing with the classic PI method.
There are a number of features motivating rigorous studies of new types of nonholonomic algebroid structures and their applications.
