DYNAMIC MODELING AND EIGEN ANALYSIS OF ADJUSTABLE-SPEED PUMPED STORAGE UNIT IN PUMPING MODE UNDER POWER REGULATION

Dynamic Modeling and Eigen Analysis of Adjustable-Speed Pumped Storage Unit in Pumping Mode Under Power Regulation

The main merit of grid-connected adjustable-speed pumped storage unit (ASPSU) is the capability to control the pumping power flexibly, which contributes to active power balance in power system operation.Physics-based dynamic modeling of ASPSU in pumping mode under power regulation is the foundation of the quantitative analysis on its transient perf

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Onset of the growing season and dry periods in Tabasco, Mexico

In rainfed agriculture, information about dates for the onset of rainy periods is used to plan activities inherent to exploitation, and even determines the success or failure of crops.The results are partially reflected after planting (germination) and at harvesting time.Dry periods are another very important factor to the agricultural cycle, causi

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Replacement of Anterior Composite Resin Restorations Using Conservative Ceramics for Occlusal and Periodontal Rehabilitation: An 18-Month Clinical Follow-Up

This case report describes a patient with discolored and fractured composite resin restorations on the anterior teeth in whom substitution was indicated.After wax-up and mock-up, the composite was removed and replaced with minimally invasive ceramic laminates.An established and predictable protocol was performed using resin cement.Minimally invasiv

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