The phrase "age constrain" is not correct in English; it should be "age constraint." You can use it when referring to a limitation or restriction based on age, often in contexts like eligibility for programs or activities.
Example: "The scholarship has an age constraint, requiring applicants to be between 18 and 25 years old."
Alternatives: "age limit" or "age restriction."
Overall, Schmidt-hammer proved to be an effective, inexpensive and versatile tool for improving the spatial resolution of Val Viola post-LGM landscape history, starting from existing numerical age constrains.
Ar Ar and U Pb ages constrain the back arc volcanism to have evolved between 163.9 ± 1.4 and 148.9 ± 1.2 Ma.
Radiocarbon ages constrain the timing of this switch to ca. 26 ka, associated with a local sea-level fall of −90 m.
Sediments are age-constrained by 210Pb and 14C measurements (Fig. 2).
FastDate was run on the complete trees (5,284 species) with the node ages constrained to the values of the 95% highest posterior densities of the ages inferred by PhyloBayes.
Fault reactivation age is constrained by 40Ar/39Ar dating of hydrothermal minerals deposited during fault slip.
Here we present sedimentological and petrographical data to elucidate the depositional environment and sedimentary processes responsible for hydrothermal carbonate precipitation and early diagenetic alteration as well as clastic sediment accumulation and provide initial 230Th/U ages to constrain the time-depth of this travertine colluvium succession.
That is, the root node or an internal node was calibrated independently as a fixed age or constrained between two ages.
This and the extended period of time that is required to evaluate the effect of interventions on aging essentially constrain clinical trials to testing the efficacy of experimental interventions.
In the proposed method, the aging and constraining effect of the boundary condition is represented by an artificial rotational spring at each support.
