"directed upon" is a correct and usable phrase in written English.
It can be used to denote a certain focus or intention of action. For example: "The force of the storm was directed upon the small fishing village."
It is soon evident that the rebels are determined to attack the Monitors in detail, in the hope of sinking them by the tons of metal that can be directed upon them at a single discharge.
Intentionality derives instead from the act of attention (attentio) directed upon the mental image.
Immediacy: Furthermore, our perceptual experiences are non-neutral about the actual presence of the mind-independent objects and features in our environment they are directed upon.
If that is so, Aristotle could not accept the thesis that for any episode of thought t, necessarily t is or is directed upon a pictorial image.
Many ordinary mental states recognized by common sense, such as belief and desire, are, as states of those kinds, necessarily directed upon some object or content.
Our analytical results suggest that the sequence-dependent random walk slows down and gets directed upon entering a region of 500 bp around the transcription start site, which significantly increases the efficiency of promoter search.
Considering the down regulation of carotenoid biosynthetic genes, these data suggest that IPP and GGPP flux would be re-directed upon infection towards the synthesis of tocopherols and also monoterpenoid-derived TIAs, instead of carotenoids.
The square is then divided into different viewing sections referred to as "pens", into which attendees are directed sequentially upon arrival.
We're all being watched, but some of us have the gaze of suspicion directed squarely upon us as soon our skin meets the eye, or our names fall upon the ear.
We focused on the formation of filopodia as the PGCs switch from random to directed migration upon exposure to the chemokine gradient.
GRASP-mediated control of Golgi linking appears to occur during Golgi repositioning upon directed cell migration and during Golgi fragmentation upon apoptosis (reviewed by Vinke et al., 2011).
