This study suggests a model to include a solar power system or photovoltaic system (PV) in the control of frequency by taking into account a percentage of the PV power production for back-up reserve.This is done by investigating two scenarios: PV contribution in (1) initial primary frequency control and (2) entire primary frequency control.As expla
Abstract Reliable, comparable information about the main causes of disease and injury in populations, and how these are changing, is a critical input for debates about priorities in the health sector.Traditional sources of information about the descriptive epidemiology of diseases, injuries and risk factors are generally incomplete, fragmented and
The present paper provides an updated checklist of the ants (Hymenoptera: Formicidae) of Pakistan.These include state park 59fifty fitted seven of the 21 known extant subfamilies with 101 valid ant species in 33 genera.Five species are reported for the first time from Pakistan: Cardiocondyla wroughtonii Forel, 1890; Crematogaster biroi Mayr, 1897;
We describe a rare case with breakage of gamma nail accompanied by nonunion of the original fracture and a subsequent new fracture in the ipsilateral femur.A 73-year-old woman suffered a subtrochanteric fracture of the femur, and the fracture was fixed with gamma nail at a previous hospital.However, fracture reduction was not adequately achieved an
Length–weight relations (LWR) were estimated for 45 fish species (27 families) from a tropical hyperhaline coastal lagoon and a protected biosphere reserve located in Yucatan Peninsula.The following species were studied: Elops saurus Linnaeus, 1766; Anchoa mitchilli (Valenciennes, 1848); Harengula jaguana Poey, 1865; Ariopsis felis (Linna