During the performance flight test at very high plateau,the helicopter is near the using limitation,the flight risk is high.It is necessary to study and develop reasonable and safe test flight methods to obtain accurate helicopter performance data while ensuring test flight safety.According to the airworthiness regulations on the requirements of he
The COVID-19 pandemic has had a profound impact on individual human behaviour, making it a prominent research topic in recent years.However, most studies have focused on mobility, with limited attention given to changes in residents’ activities patterns.Furthermore, changes in these patterns at a finer spatiotemporal scale remain understudied.To
Using a perfect single crystal as a neutron filter allows us to have a thermal neutron beam with almost no background of fast neutrons.Single crystals of Al2O3 (sapphire) have proven to be effective filters for fast neutrons and are incorporated into neutron instruments.The present work would experimentally investigate c-axis neutron transmission r
Building fabric retrofitting is an important first step in improving building energy efficiency.The United Kingdom’s (UK) housing stock is one of the most inefficient in Europe, and Northern Ireland has the second-highest level of fuel poverty in the UK.This Northern Irish case study developed three fabric retrofit scenarios that estimate potenti
Recent observations have revealed that closely related strains of the same microbial species can stably coexist in Gift Bags natural and laboratory settings subject to boom and bust dynamics and serial dilutions, respectively.However, the possible mechanisms enabling the coexistence of only a handful of strains, but not more, have thus far remained