Antennas operating in the high-frequency (HF) bands are generally relatively large in size, which severely limits the application of the antennas.Therefore, miniaturisation of the antenna is necessary.Here, a Parts Washer dual-folded structure Yagi antenna is designed for HF surface wave radar (SWR).Genetic algorithm is employed to optimise and bal

Urban stormwater may contain pollutants from different traffic vehicular sources including brake and tire wear, exhaust emissions, and atmospheric deposition.In this research, we took advantage of COVID-19 restrictions to evaluate the effects of historically low vehicular circulation on stormwater quality (metal concentrations and mass loads) gener