"if persistent" is a correct and usable phrase in written English.
It can be used when stating a condition or requirement for something to happen. An example sentence could be: "If persistent effort is put into the project, success is likely to be achieved."
There have also been isolated, if persistent, reports of beatings in some American-operated centers.
But some Twitter users voiced concerns over how the authorities handled a peaceful – if persistent – protest.
Even a 1% change in flow rate, if persistent, can point to a leak.
"It is obvious – if persistent serious criminals are in prison, they can't commit crimes against the public".
If persistent worry is potentially so damaging to our mental health, what can be done to combat it?
Some of them would, we believe, willingly have heard the Dvorăk concerto a second time if persistent applause could have brought such a consummation about.
"It's easily going to take up to 10 years to create a surplus and stabilize the economy, especially if persistent political turbulence hinders the ability to enforce reforms".
Yusef Azad, of the National AIDS Trust, fears that if persistent users are denied treatment, they may spread blood-borne diseases.
Dr. Kornberg was a passionate scientist who believed that an enzymologist, if persistent, could recreate in a test tube the kind of metabolic event that happens in a cell.
But none of the items have gone back because of an unusual, if persistent, disagreement with representatives of the Apaches over whether the museum will officially designate the items as sacred relics that should never have been taken.
The guidelines list four warning signs of ovarian cancer: bloating, feeling full quickly, pelvic pain, and urgent need to urinate, which, if persistent more than 12 times a month, should lead doctors to offer a blood test.
