The reference value used for the discussion of file set lifespan and service life was that of 48.34 Ohms value registered by the reference unused ProTaper set.
This is the first study to evaluate overall, met, and unmet service needs in ASD across childhood, supporting the international call for a lifespan model of services and families' desire for services that are more seamless over time (Hodgetts et al., 2013b, 2014).
The main factors to consider include starting moment, duration and ending moment of inertial response, BESS lifespan and ancillary services revenue with the purpose of improving the system dynamic frequency response while achieving an optimal balance between cost and performance.
Research on lifespan issues and services were the least well-funded research areas (5% and 1%, respectively).
The compressed-air energy storage has the advantages of large capacity, long operation time, long service lifespan, etc.
The economic and time constraints in the repair or upgrading of existing infrastructure have become a major issue, particularly extending the service lifespan of bridges.
The issue of maintenance and repair/upgrading of existing structures has become a major issue, particularly extending the service lifespan of bridges.
The pumped storage is the most mature technology, which is characterized with having large capacity, long service lifespan and low unit cost.
Engineering structures are prone to fatigue damage over service lifespan, entailing early detection and continuous monitoring of the fatigue damage from its initiation through growth.
The charging/discharging rate of superconducting magnetic energy storage is critical, and it has advantages of high power density, fast response, high energy conversion efficiency, long service lifespan, etc.
