May 2013

Regional climate model: Investigating the impacts of climate change on water availability in Nigeria

  Nigeria and the rest of African nations, despite the fact that they produce less than 4% of global greenhouse gas emissions, are considered the world’s most vulnerable regions with regard to the effects of climate change due to the fragility of their economies. However, it is still very difficult to assess the extent of such changes and the specific environmental impacts particularly on water...

Author(s): O. J., Matthew, Awotoye, O. O., Dada, A. C. and Odedokun, O. D.

May 2013

An improvement on the use of empirical green functions for ground motion synthesis to predict Tehran’s main earthquake

  This research presents potential use of the empirical green function (EGF) approach and kinematic rupture models as a predicting tool in strong ground motion seismology. The former applications of EGF were employed on very small earthquakes, so the results were not reliable for almost all earthquakes recorded in the crowded metropolitan areas, due to improper signal to noise...

Author(s): A. Golara, and R. Ahmady Jazany

May 2013

Analytical and computational fluid dynamics (CFD) investigation of the applicability of a ferrofluidic magnetic micropump for fluids with stress-sensitive mircroparticles

  This paper presents analytical and computational fluid dynamics (CFD) investigations of the applicability of a novel ferrofluidic magnetic micropump for fluids with stress-sensitive microparticles. The velocity, pressure, and stress fields in the annular channel of the pump were determined analytically for the case of channels with rectangular cross sections and small aspect ratios (h/w→ 0) under...

Author(s): M. I. Kilani, M. I. Al-Widyan and A. Al Halhouli,

May 2013

Computational simulation of frequency inverter ramps applied to an electric vehicle

  This work aims to represent acceleration/deceleration ramps generator and a voltage/frequency control through a SCICOS block diagram for evaluation of values commonly used with electric vehicles. It was opted for the representation of functional block diagrams for implementing the models, and was adopted the free software SCILAB/SCICOS to design and to simulate the representations proposed. Also measurements...

Author(s): Francisco Jose Grandinetti,, Luiz Octavio Mattos dos Reis, Wendell de Queiroz Lamas, Paulo Antonio dos Santos and Denis Fernando Ramos