The phrase "a second formulation" is correct and usable in written English.
It can be used when referring to an alternative version or expression of an idea or concept that has been revised or rephrased.
Example: "In the discussion, we presented a second formulation of the theory that addressed the previous criticisms."
Alternatives: "an alternative formulation" or "a revised formulation".
Gilead said it initiated development of a second formulation of its Truvada drug and Sustiva, which is made by Bristol-Myers.
This approach led to a second formulation of quantum mechanics (the first being by Heisenberg in 1925), and solutions of Schrödinger's equation, like Heisenberg's, provided derivations of the energy states of an electron in a hydrogen atom that were equivalent to those that had been derived first by Bohr in 1913, and that were known to reproduce the hydrogen spectrum.
These modifications led to a second formulation of the model (Model II) with 7 DAEs and 17 parameters that fits the experimental data equally well.
AsO3 3- 752, 680, 340 a Second formulations given are those preferred by Loehr and Plane.[35] Figure 12 Distribution of arsenite species as a function of pH at 25°C and 1 bar.
A third formulation contained no urea.
A first formulation of an integral operator of fractional order in reliable form is named the Riemann-Liouville fractional integral operator.
It also included a third formulation, creating a 3-period crossover design to assess the BE of 2.5, 5, and 10 mg/mL.
In addition, a third formulation is also presented, in which the current is maximized simultaneously for all the i v points.
We emphasize that a third formulation of E1(E3), with hydride(s) bound to M and the presence of oxidized P-cluster, is ruled out by the absence of EPR signals from P+ in samples trapped under turnover conditions.
To assess the effect of injecting gold-coated liposomes into cells without the presence of signaling molecules, a fourth formulation of liposomes was prepared without IP3 or AdA and gold coated.
For higher amplitudes, a complementary second formulation has been developed, leading to reproduction of the known results via the solution of reduced linear systems of five equations and five unknowns.
