The phrase "able to prevent some" is correct and usable in written English.
It can be used when discussing the capability to stop or hinder certain things or actions.
Example: "The new policy is designed to be able to prevent some of the issues we faced last year."
Alternatives: "capable of stopping some" or "able to hinder certain".
Though we will not be able to prevent all psychosis, we should be able to prevent some of it.
The present study was designed to examine whether testosterone replacement is able to prevent some effects of maternal restraint stress — during the period of brain sexual differentiation — on endocrine system and sexual behavior in male rat descendants.
"Stronger regulation may have been able to prevent some of the problems," said JPMorgan Chase CEO James Dimon James Dimon in his written testimony.
If you have these conversations before tensions are running high, you'll be able to prevent some (not all!) of the major blow-ups down the road.
While members of Ketaeb Hezbollah have joined Iraqi forces in fighting the so-called Islamic State (IS) insurgency, the government has not been able to prevent some militias from breaking away from government command and acting on their own.
There are several examples of experimental subunit vaccines that are able to prevent some of the most widespread fungal infections through the induction of protective antibodies.
Moreover, using this model we were able to prevent, to some extent, intracellular degradation of misfolded mutant ACE, and, to rescue, to some degree, trafficking of mutant ACE to the cell surface.
The new Foreign Minister János Martonyi is a respected moderate politician and an expert in EU affairs; he may be able to prevent Mr. Orbán from making some ill-conceived mistakes.
But PG&E, a major gas and power company in California, might have been able to prevent, or at least mitigate, some of that damage.
Where possible, you may be able to prevent further staining by making some lifestyle changes.
In addition, wound dressings are in some cases able to prevent loss of body fluid [ 3], prevent exudates build up [ 9], protect the wounds from external contamination [ 10], provide sufficient bactericidal effects to inhibit infection [ 11], and prepare an optimum wound bed for autographing [ 12, 13].
