June 2011

Salt weathering, bio-deterioration and rate of weathering of dimensional sandstone in ancient buildings of Aachen City, Germany

  Over the last decade, the concept of stone decay being caused by one or two processes has been revised in favour of a more holistic notion that many operate together, cyclical or seasonal. Certain of these processes may become pre-dominant over others at a particular environment that enhances the impact of these process or processes. The rock's mineralogy is an effective factor in controlling rock's...

Author(s): Kamh G. M. E.

June 2011

Estimate of bed load transport in Kubanni Watershed in Northern Nigeria using grain size distribution data

  Representative bed material samples were taken from the gauging sites located on two rivers, Samaru River and Goruba River, in the Kubanni Watershed for sieve analysis to obtain the grain size distribution of the bed materials. The analyses of the grain size distribution showed that the bed load accounted for 7% of the total suspended sediment load of 19,039,450 kg/annum in the Kubanni Watershed. Samaru River...

Author(s): Adeogun B. K., Igboro S. B. and Ibrahim F. B.