BACKGROUND Combined oral contraceptives are a common method of contraception, but they carry a risk of venous and arterial thrombosis. We assessed whether use of drospirenone was associated with an increase in thrombotic risk relative to third-generation combined oral contraceptives. METHODS Using computerized records of the largest health care provider in Israel, we identified all women aged...

Aiming at the complementary characteristics of wind energy and solar energy, a wind-solar-storage combined power generation system is designed, which includes permanent magnet direct-drive turbines, photovoltaic arrays, battery packs corresponding converter control strategies. Simulation analysis carried out by Matlab/Simulink platform, results show that model storage correct effective, grid co...

The design of future decarbonized power systems is one the most relevant and challenging problems that system planners are facing nowadays. It expected Combined-Cycle Gas Turbines (CCGTs) play a role in these to provide peak reserve capacity when intermittent units be unavailable. However, large computational size planning has prevented so far from modeling actual operation CCGTs accurately. Th...