"was firstly identified" is a perfectly correct and usable phrase in written English.
It can be used to describe an event or process that happened first, before more recent events or processes. For example: "The rare species of bird was firstly identified in the Amazon rainforest in 1998."
In addition, the phenolic profile of this residue was firstly identified by RP-LC DAD.
Angiotensin-converting enzyme 2 (ACE2) was firstly identified from human cardiac left ventricle complementary DNA (cDNA) library and lymphoma cDNA library by two separate groups [7, 8].
The chemical composition of EOs was firstly identified by GC and GC/MS and their antibacterial activity was evaluated.
CRTD-Bor boriding process improved the oxidation resistance of the steel at 650 °C remarkably by forming thin ~ 7 μm thick protective layer composing of mixed iron-, chromium - oxides and borates as well as boron oxide (B2O3) which was firstly identified in the hexagonal crystalline structure after oxidizing borided steel samples at 450 °C and 650 °C.
It was firstly identified in Phormia terraenovae (Lambert et al. 1989).
The gene encoding ABA glucosyltransferase was firstly identified in adzuki bean and named AOG (Xu et al., 2002).
Air-induced damping is firstly identified as an important source of damping of a section model.
Two periodic states of an elastic flag are firstly identified with different dimensionless bending stiffness: a lower frequency state and a higher frequency state.
To this end, a new monitoring approach is developed where the finite Gaussian mixture model is firstly identified directly from available historical data.
A reduced order state-space model which contains dominant low frequency oscillation modes is firstly identified online by using an closed-loop SMI algorithm.
In this paper, two different commonly used geometric error definition and modeling methods are firstly identified and analyzed, named as "Rotary axis component shift" and "Rotary axis line shift".
