The phrase "are postulated to be" is correct and usable in written English.
It can be used in contexts where you are discussing theories, hypotheses, or assumptions about something.
Example: "In the study, certain behaviors are postulated to be influenced by environmental factors."
Alternatives: "are assumed to be" or "are theorized to be".
Surface hydroxyl groups are postulated to be involved in ligand exchange with the reductant, 2-propanol.
The pathophysiological mechanism and clinical features of epilepsy and migraine are postulated to be the same, and one may precipitate, follow or occur concurrently with the other [22].
The benefits of these daily regimens are postulated to be a result of enhanced solute clearance and improved extracellular volume management.
Measurement outcomes in the EPR/B experiment exist only as (non-physical) mental states in observers' minds (which are postulated to be non-physical entities).
These inner cone cracks, so named because they form well within the maximum contact circle, are postulated to be driven by a hydraulic pumping mechanism.
These cuttings are postulated to be among the possible causes of many costly complications, such as mechanical pipe sticking, bore hole instability, drag and torque.
We have observed two different types of domains, i.e., blue-rimmed domains and white-rimmed domains, which are postulated to be confined in the inner layers and located at the outermost layer, respectively.
While the role of reproductive hormones in the risk of mood symptoms is unclear, psychological symptoms are postulated to be linked to the fluctuation, not absolute levels, of estradiol (Rubinow et al. 1998).
Comparisons with ancient oxide-facies iron formation are made by modeling geochemically the mineral equilibria of phases that are postulated to be stable analogues of those found on the modern seafloor.
Malaria parasite glutathione S-transferases (GSTs) are postulated to be essential for parasite survival by protecting the parasite against oxidative stress and buffering the detoxification of heme-binding compounds; therefore, GSTs are considered potential targets for drug development.
Central to this, is biotensegrity, a concept where the bones of the skeletal system are postulated to be held together by the resting muscle tone of numerous viscoelastic muscular chains in a tension dependent manner.
