The hidden enemy on Mount Kilimanjaro: Safely dealing with low oxygen at high altitude

At altitudes over 2,400 metres, lack of oxygen — a condition called hypoxia — can cause acute mountain sickness. Incidence ...
IEEE

Cramer–Rao Bound for Noncoherent Direction of Arrival Estimation in the Presence of Sensor Location Errors

Abstract: In previous work, we have shown that the noncoherent direction of arrival (DOA) estimation by an array of sensors is insensitive to sensor phase errors. Here, we analyze the effects of ...
IEEE

Robust location detection in emergency sensor networks

Abstract: We propose a new framework for providing robust location detection in emergency response systems, based on the theory of identifying codes. The key idea of this approach is to allow sensor ...
BBC

KS1 / KS2 Science: How does water get from the roots to leaves of a plant?

Ivy: Dull dull dull dull dull dull dull dull dull dull dull dull dull. Posey: No, you're not. Ivy: Not me! The flowers. I planted all these carnations months ago and I thought they'd be colourful and ...
C&EN

Effect of Nanobubbles on the Flotation Performance of Oxidized Coal

Chinese National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China School of Chemical Engineering and ...