"upon becoming aware" is correct and usable in written English.
You could use it in sentences where you are referring to someone becoming aware of a certain situation, such as, "Upon becoming aware of the animal's need for help, he rushed to its aid."
Upon becoming aware of any breach in security, Client shall take prompt action to remedy such breach to protect GNM and the Services.
Before the financial statement was disclosed, Gary Crigger, Firestone's executive vice president for business planning, told a Senate panel that Firestone had immediately notified regulators in early August upon becoming aware of a problem.
This fatalistic realization is a source of comfort and tranquillity for Schopenhauer, for upon becoming aware that nothing can be done to alter the course of events, he finds that the struggle to change the world quickly loses its force (see also WWR, Section 56).
Sudirman, upon becoming aware of the attack, had an order read over RRI which stated that soldiers should fight as they had been trained – as guerrillas.
Upon becoming aware of the outbreak, the German national centre for disease control enhanced the frequency of reporting from subnational to national level to daily reporting and implemented a syndromic surveillance system for bloody diarrhoea in emergency departments [ 44].
Inside the range of venomous snakes in Arkansas and West Virginia, adolescent and adult black bears reacted fearfully in seven of seven encounters upon becoming aware of venomous and non-venomous snakes; but in northern Michigan and Minnesota where venomous snakes have been absent for millennia, black bears showed little or no fear in four encounters with non-venomous snakes of three species.
'Speaking up' is defined as the raising of concerns by health care professionals for the benefit of patient safety and care quality upon recognising or becoming aware of the risky or deficient actions of others within health care teams in a hospital environment [ 4, 5].
In other words, instead of actually becoming aware of the error itself, we first may become aware of the OR.
In District 15, becoming aware of the council has meant also becoming aware of Mr. Devor.
It was a question, I think, of my becoming aware of her becoming aware of me.
And what are the rewards of becoming aware?
