Developing metal-free catalysts for oxygen reduction reaction (ORR) is a great challenge in the development of fuel cells. Nitrogen and sulfur codoped carbon with remarkably high nitrogen content up ...

Low-pressure medical oxygen systems have been installed in four health facilities in the Teso sub-region, aiming to reduce child mortality caused by respiratory illnesses. The FREO2 oxygen systems, ...

Map shows cheapest and most expensive states to retire comfortably A logging protest in the treetops ends in terror, activists say Extreme heatwave hits Europe as temperatures soar above 40C in ...

Introduction Improving hospital oxygen systems can improve quality of care and reduce mortality for children, but we lack data on cost-effectiveness or sustainability. This study evaluated medium-term ...

The development of the Li-ion battery Industry in a green way is crucial for human beings’ future. Ionic liquids (ILs) are green cosolvents that could be applied in Li-ion battery electrolytes. A ...

In this paper, we propose a novel low-cost microwave vector system dedicated for monitoring the properties of liquid samples. The system is composed of the differentially fed coupled-line sensor and ...