"are maintained regularly" is grammatically correct and can be used in written English.
It is typically used when describing something that is regularly taken care of or kept in good condition. Example: "The machines in the factory are maintained regularly to ensure proper functioning."
But she sounds a note of caution: "if villagers are going to drink this water, then you have to be very careful about the catchment, it has to be maintained regularly, and a filter needs to attached".
It is well established that such next generation systems need to be maintained regularly to prevent any catastrophic failure as a result of regular wear and tear.
Cleaning, dewatering, renewing with freshwater, and feeding were maintained regularly on every alternate day basis.
Patients recommended that appointments with the regional hepatitis nurse and liver specialist should be maintained regularly throughout treatment, as they were not only considered to be important but were also reassuring for patients.
Monitoring of patients at the beginning of treatment is very important to ensure correct dosage and to prevent renal problems, but this must be maintained regularly in order to prevent problems that may develop in the long term.
As the average waiting period for surgery for our study participants was 70 days, this would have provided ample time to have a positive impact on physical conditioning if an exercise program had been maintained regularly.
The U2OS BTG-knockdown stable cell line was maintained regularly in complete DMEM containing 2.5 μg/ml blasticidin (InvivoGen, San Diego, CA, USA) and 0.8 μg/ml puromycin (Sigma-Aldrich, St . Louis MO, USA), and the PC3 BTG3-overexpressed line in F-12 K plus 2.5 μg/ml blasticidin and 100 μg/ml Zeocin (InvivoGen).
The distinct domains are therefore integrated in an interoperable framework in spite of the fact that they are maintained, and regularly edited, by different communities of researchers.
