the activity concentration of gross alpha and gross beta particles in four samples of borehole drinking water consumed in ibrahim badamasi babangida university (ibbu), lapai, niger state-nigeria was measured, using a portable single channel gas free proportional counter (mpc2000b-dp) detector. this study focused on cancer related problems and the bio-data of the environment was discussed as wel...

We discuss the results of three-dimensional magnetohydrodynamic simulations, using a pseudo-Newtonian potential, of thin disk (h/r ≈ 0.1) accretion onto black holes. We find (i) that magnetic stresses persist within rms, the marginally stable orbit, and (ii) that the importance of those stresses for the dynamics of the flow depends upon the strength of magnetic fields in the disk outside rms. S...

As a result of advancing globalization and economic activities that go beyond national borders, gross domestic product (GDP) and gross national product (GNP) are becoming dissociated. The two are the same to the extent that they measure (gross) added value generated during a specific period (e.g., one year). A difference between them is, generally speaking, the former focuses on whether economi...

today, with emphasis on the mechanical heart and heart transplantation from one human to another andone species to another, a knowledge of the anatomy of the bird’s heart could contribute to theseaccomplishments. eight male adult ostriches were used to study the heart macroscopically. this studyrevealed that the ostrich heart has some different features from the other birds. in the ostrich, fib...