However, incorporating the secondary phase and control over the distribution of secondary phase is crucial while using FSP as the processing method.
The hierarchical control strategy introduced in [14, 17, 20] classifies the control level into primary, secondary and tertiary control in a pyramid shape.
71% worked in tertiary control, 18% in secondary control and 11% in both secondary and tertiary control.
The efficiency and the robustness of active noise control against fluctuations depend, amongst other things, on the secondary source and control microphone configurations.
ROS can act as secondary messenger and control various signaling cascades.
Several studies have suggested that ROS can act as secondary messengers and control various signaling cascades, leading to sustained proliferation of cancer cells.
Furthermore, the primary, secondary, and tertiary control levels are systematically analyzed and classified according to different control objectives.
The presented hierarchy is similar to the control structure used in classical AC transmission systems and is divided in primary, secondary and tertiary control actions.
The majority of these provide secondary and tertiary control power, whereby a high share of the market volume, which is about 4800 MW of positive and negative control power, can be theoretically contributed by biogas plants [77].
Consequently, participating in secondary and tertiary control power markets may prove to be a more relevant perspective for bioenergy plants; here, competitors might be vRES (for negative control power) [73], storage technologies, demand response [81] and conventional power plants.
