June 2013

Peristaltic transport of micropolar fluid through porous medium in a symmetric channel with heat and mass transfer in the presence of generation and radiation

  The effect of heat generation and radiation on the peristaltic motion of micropolar fluid with heat and mass transfer through porous medium in a symmetric channel was investigated. The equations of motion for micropolar fluids were introduced as well as the equations of energy and concentration. The system of these equations written in two dimensions and then transformed using the transformations between a...

Author(s): Nabil T. M. Eldabe, Afaf S. Zaghrout, Hameda M. Shawky and Amera S. Awad

June 2013

Weakly symmetric and weakly ricci–symmetric conditions on manifolds

  In this paper, we have researched the necessary and sufficient conditions for a manifold to be weakly symmetric and weakly Ricci–symmetric and examined the conditions over 1–forms involved in the definitions of weakly symmetric and weakly Ricci–symmetric conditions. We have evaluated some certain results of situations in which a weakly symmetric manifold is with parallel or...

Author(s): Mehmet ATÇEKEN and Ümit YILDIRIM

June 2013

Incidents of cancer in Sudan: Past trends and future forecasts

  Incidents of cancer in Sudan have been growing in numbers over the last five decades (1967-2010). Using data compiled regularly by radiations isotope of cancer in Khartoum (RICK) - which continued to be the only cancer treatment centre in Sudan for over the last half century- its trend is studied using Box-Jenkins methodology in time series analysis is the optimal method applied to the pattern. This method...

Author(s): Ehab Ahmed Mohammed, Atif Alagib, and Arbab Ismail Babiker