The phrase "an initial and sustained" is correct and usable in written English.
It can be used to describe something that begins at a certain point and continues over a period of time, often in contexts related to processes, efforts, or conditions.
Example: "The project requires an initial and sustained effort to ensure its success over the long term."
Alternatives: "a preliminary and ongoing" or "a starting and continuous".
Similarly, we observed an initial and sustained decrease in the first AHP, measured as the voltage difference between AP threshold and the peak after- hyperpolarization voltage, in recordings from paired but not unpaired neurons (Figure 2B; "Paired", pre = −7.28±0.47, 40 min = −4.14±0.54 mV, p<0.001; "Unpaired", pre = −6.01±0.87, 40 min = −5.26±0.68 mV, p = 0.247).
In the majority of industrial fermentation applications of bakers' yeast (Saccharomyces cerevisiae), a high initial and sustained capacity to ferment the available sugar is a highly important characteristic, especially when the biomass is introduced in an application environment with high sugar concentrations and/or absence of oxygen.
Luping (2011), however, found that the 27 participants in his study of volunteerism in an ASO identified both initial and sustained participation motives.
"The real problem is promoting a social demand for initial and sustained toilet use," she says.
These results suggest that easy access to credit is a critical factor driving both initial and sustained certification.
Non-verbal communication (e.g., making eye contact, touching), flirtatious behavior, and romantic gestures (e.g., sending flowers, preparing a meal) were used to both express initial and sustained interest in the other party.
Capital-cost subsidies that have been traditionally employed to enhance ICS adoption were augmented with rebates linked to stated and objectively measured use in order to investigate impacts on both initial and sustained adoption in the treatment group.
High initial and sustained participation in PA programs is important for achieving public health impact [ 7].
The current opinion implies a model in which the major adhesins BabA, SabA and others make the initial and sustained host cell contact important for bacterial colonisation.
