The phrase "a first time proof of" is correct and usable in written English.
It can be used when referring to an initial demonstration or verification of a concept, theory, or result.
Example: "This study presents a first time proof of the effectiveness of the new treatment in clinical trials."
Alternatives: "an initial demonstration of" or "a first demonstration of".
We also provide a first-time proof-of-concept of biplex detection of VC and Escherichia coli (EC) targets in the portable AC susceptometer.
In this study, we developed an in vitro model showing for the first time proof of and the mechanism for a soft-tissue component of ONJ, whereby after release from bone, BP induces gingival fibroblast and epithelial cell death via apoptosis, with the continued release of ZA preventing spontaneous resolution or healing, due to inhibition of cell proliferation.
This phase I study had a pharmacodynamic endpoint of PARP inhibition in PBMCs, demonstrating for the first time proof of mechanism of the class.
Concluding, for the first time proof is given that viral agents at least of the myxovirus family - here influenza A/H1N1 - can induce pure often fatal AFOP.
Herein, we describe for the first time the proof-of-concept of CXCR4-directed PET MRI with [68Ga]Pentixafor in response assessment in a patient with extranodal marginal zone lymphoma (MZL) of the orbital cavities and compare it to standard [18F]FDG PET imaging.
He was the first Austrian margrave to describe himself as the holder of territorial principality (principatus terrae), and during his time Austrian common law was mentioned for the first time, another proof of the developing national consciousness.
This first version of the Lytro is just that: a first, a proof-of-concept.
9– 11 Here we provide, for the first time, an experimental proof-of-principle of such a phase-change material-based "processor".
The song about hearing "Like a Rolling Stone" for the first time was proof enough of that.
You do not need to bring ID to the polls, though if you are a first-time voter you need to bring proof-of-residence such as an ID, a current utility bill, bank statement, paycheck or other government-issued identifying document with your name and Registered Address on it.
In conclusion, we here for the first time in a proof-of-principle model demonstrate that residual therapy-resistant cancer cells can be killed when the resistance is due to PI-9 expression as escape mechanism.
