Outputs (414)

Combined effects of municipal and industrial wastes on the quality of the new northern Calabar River, Nigeria (2016)
Journal Article

This study was conducted to investigate the combined effects of municipal and industrial waste discharges on the quality of the new northern Calabar River in the Niger Delta province (5.317°N, 6.467°E) of Nigeria. Water samples were collected in June... Read More about Combined effects of municipal and industrial wastes on the quality of the new northern Calabar River, Nigeria.

Implementing sustainable construction principles and practices by key stakeholders (2016)
Presentation / Conference Contribution

The term ‘sustainable construction’ is used to highlight the responsibility of the construction industry in attaining sustainable development (SD). With the increasing necessity for resource efficiency and climate change adaptation, there is a need f... Read More about Implementing sustainable construction principles and practices by key stakeholders.

Current trend in water supply and consumption, and associated health implications ions in Port Harcourt, Nigeria (2016)
Journal Article

This paper briefly discussed potable water situation in Port Harcourt, Nigeria, from the 1950s, and then
highlighted major factors preventing the implementation of water projects. Due to the inability of government
to provide water, and the regulat... Read More about Current trend in water supply and consumption, and associated health implications ions in Port Harcourt, Nigeria.

How do traffic flow and the emissions they produced vary through the day, week, season and year: evidence from big telematics data (2016)
Presentation / Conference Contribution

Robust feedback linearization control of air-feed system in PEM fuel cell against practical uncertainty (2016)
Journal Article

In this paper robust feedback linearization control approach based on the gap metric analysis is proposed to control a Proton Exchange Membrane Fuel Cell (PEMFC). The oxygen excess ratio ( ) is regulated through adjustment of the air supply to avoid... Read More about Robust feedback linearization control of air-feed system in PEM fuel cell against practical uncertainty.

Preliminary numerical simulations to investigate the kinematics of infant head impact (2016)
Presentation / Conference Contribution

Presented is the development of a simulation that allows for preliminary investigation of impact to a 10 day old infant head. A computer-aided drafting (CAD) model is reconstructed from high resolution computerised tomography (CT) scan images and mes... Read More about Preliminary numerical simulations to investigate the kinematics of infant head impact.

Chattering analysis of second order sliding mode algorithms for linear plants with disturbance (2016)
Presentation / Conference Contribution

An analysis of second-order sliding-mode algorithms, specially of super-twisting and twisting as a filter algorithm is performed in frequency domain with the use of the describing function method, and is shown that periodic motion happens and the par... Read More about Chattering analysis of second order sliding mode algorithms for linear plants with disturbance.

Experimental measurement and analytical determination of shot peening residual stresses considering friction and real unloading behavior (2016)
Journal Article

This paper presents an analytical model to predict the residual stress distribution induced by Shot peening. The analytical approach is based on the work of Shen and Atluri (2006) [18] with some modifications. The modifications are related to the ela... Read More about Experimental measurement and analytical determination of shot peening residual stresses considering friction and real unloading behavior.

Time-dependent thermo-elastic creep analysis of thick-walled spherical pressure vessels made of functionally graded materials (2015)
Journal Article

Assuming that the thermo-elastic creep response of the material is governed by Norton's law and material properties, except Poisson's ratio, are considered as a function of the radius of the spherical vessel, an analytical solution is presented for c... Read More about Time-dependent thermo-elastic creep analysis of thick-walled spherical pressure vessels made of functionally graded materials.

Fuzzy PID control of a stand-alone system based on PEM fuel cell (2015)
Journal Article

Fuel cell (FC) systems are appropriate candidates as alternative energy sources for use in stand-alone applications. However, the FC generates an unregulated voltage, which is not suitable in stand-alone application usage solely. This paper presents... Read More about Fuzzy PID control of a stand-alone system based on PEM fuel cell.