Household air pollution from solid fuel burning kills over 4 million people every year including half a million children from acute lower respiratory infections.Although biologically plausible, it is not clear whether household air pollution is also associated with acute lower respiratory infections in adults.We systematically reviewed the literatu
With the commemoration of the battles around Cuito Canavale coming up,various authors are striding Angolan battlefields again.In South Africa a variety ofpublications is seeing the light.Unfortunately many of these are by former seniorofficers highlighting their own interpretation of the war, as did many previouspublications in South Africa.Many pu
The concircularity property of vector fields implies the geodesicity property, while the converse of this statement is not true.The main objective of this note is to find conditions Lower Spinner Spray Arm under which the concircularity and geodesicity properties of vector fields are equivalent.Moreover, it is shown that the geodesicity property of