Current predictions for future operations with drones estimate traffic densities orders of magnitude higher than any observed in manned aviation.Such densities call for further research and innovation, in particular, into conflict detection and resolution without the need for human intervention.The layered airspace concept, where aircraft are separ
There are stringent requirements on the vertical movement of a ground surface when using Ring Crimp Terminals artificial ground freezing method to reinforce a shield tunnel in a city.This paper focused on the tunnel of Nanjing Metro Line Two between Yixianqiao and Daxinggong.Based on the discrete element thermo-mechanical coupling theory, the horiz
The paper deals with the issue of decision-making (planning phase as a procedural function of management in defence) in the use of units of the Serbian Armed Forces (SAF) in emergencies caused by floods.The basis of the paper is the data obtained on the basis of insight into the documents of the units of the SAF and civilian authorities engaged in
Hydrofluoric acid (HF) is a catalyst for the production of linear alkylbenzene (LAB).In this research, the corrosion and perforation in the overhead line of Hair HF neutralization section in Bistoun Petrochemical Company (BPC), in Iran was investigated.The accumulation of sediment and under deposit corrosion has resulted in the perforation of the m
Hydrofluoric acid (HF) is a catalyst for the production of linear alkylbenzene (LAB).In this research, the corrosion and perforation in the overhead line of Hair HF neutralization section in Bistoun Petrochemical Company (BPC), in Iran was investigated.The accumulation of sediment and under deposit corrosion has resulted in the perforation of the m