The 3 Piece Full Bed stability of grid-connected wind power system (GCWPS) is prone to deteriorate due to the impedance interaction between wind turbines and the weak grid.For purpose of finding out the cause of power oscillation and effectively improving the stability of GCWPS under weak grid, firstly of all, a frequency coupling impedance model (
Abstract Background The association between area deprivation and health has mostly been examined in cross-sectional studies or prospective studies with short follow-up.These studies have rarely taken migration into account.This is a possible source of misclassification of exposure, i.e.an unknown number of study participants are attributed an expos
Approximately 75% of patients with advanced breast cancer develop bone metastasis, which significantly affects both the quality of life and the survival rate of patients.Accurate determination of the status of bone metastases is important for developing treatment strategies and the prognosis of the disease.Here, we report the case of a 33-year-old
The development of high-yielding crops with drought tolerance is necessary to increase food, feed, fiber and fuel production.Methods that create similar environmental conditions for a large number of genotypes are essential to investigate plant Briefs responses to drought in gene discovery studies.Modern facilities that control water availability f