The phrase "a certain formulation" is correct and usable in written English.
It can be used when referring to a specific way of expressing or structuring something, often in a vague or unspecified manner.
Example: "In scientific research, a certain formulation of the hypothesis can lead to different experimental outcomes."
Alternatives: "a specific formulation" or "a particular formulation".
This idea is based on the fact that the linearized Bregman method (LBM) proposed by Osher et al. (Multiscale Model. Simul. 4(200560-489, 2005) is equivalent to a gradient descent method applied to a certain dual formulation which converges to the solution of the regularized basis pursuit problem.
Here, we have systematically studied the effects of certain formulation parameters on the properties of the double-shell composite microcapsules, i.e. the MF cross-linking time and the concentration of the aqueous CaCl2 and Na2CO3 used for the ripening process of CaCO3 nanoparticles.
Examples have been reported for different chemical groups [34] and particularly for certain formulation additives (penetration agents) of herbicidal products [35].
Biowaivers During Scale-Up and Post-approval Changes: Certain formulation changes in components and composition, scale-up, manufacturing site change, manufacturing process, or equipment changes may be made post-approval.
For example, some senators have started to discuss a "federal jobs guarantee" — a promise that, in certain formulations, means anyone who wants could have a government job paying $15 an hour with great benefits.
It is easy to see how the historical resources upon which Fischer and Ravizza draw allow them to handle certain formulations of a manipulation argument.
A more rapid development of nanoscale RNAi therapeutics has been hampered by the limited knowledge about the identity of the critical driver lesions in specific types of cancer, safety concerns about certain formulations, and a disappointingly poor delivery of the siRNA into target cancer cells (Guo & Huang, 2011).
"The fact that the substance is available as a prescription drug as well as over the counter in certain formulations, and it is only approved, such a substance, in Eastern European, Baltic countries, the probability is that the athlete who is originating from that region has more contact to that sort of substance.
In certain formulations of statistical mechanics a formula for entropy is derived that looks confusingly similar to the formula for entropy derived by Shannon.
6 While considerable efforts are being made to reduce salt intake in the population in general we were concerned that a high sodium load can be ingested through certain formulations of medicines such as effervescent, dispersible, and soluble formulations.
