The large-scale photospheric magnetic field is commonly thought to be mainly dipolar during sunspot minima, when magnetic fields of opposite polarity cover the solar poles.However, recent studies show that the octupole harmonics contribute comparably to the spatial power of the drive set photospheric field at these times.Also, the even harmonics ar
With the popularity of electric multi-rotor unmanned aerial vehicles (EMRUAV), the Travel Bag problem of low efficiency of the motor propeller system (MPS) becomes serious especially for EMRUAVs which have multiple working states.To solve this problem, an integrated optimization design method for high-efficiency MPS is proposed using an improved pa
Shower Chair Commodes Background and aims: Air pollution is a risk factor for human health and the environment.Due to the nature of the process and also to employing melting furnaces, the production and emission of some pollutants such as harmful dust is very high in the steel industry.Therefore, considering the importance of the issue, control of
Methane is drive set a powerful greenhouse gas with a 25 times higher 100-year warming potential than carbon dioxide and is a target for mitigation to achieve climate goals.To control and curb methane emissions, estimates are required from the sources and sectors which are typically generated using bottom-up methods.However, recent studies have sho