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This work examines the heat transfer on unstable MHD flow of fourth grade fluid in horizontal parallel plates. The plates are arranged so that the upper plate oscillates and moves while the lower plate is stationary. The temperatures prescribed by the plates are uniform and asymmetric. Dimensionless parameters are set to convert the governing equations to dimensionless form. Solutions for momentum and energy equations are explicitly obtained through the He-Laplace scheme. The effect of various flow parameters on velocity profile and temperature distribution is discussed using graphs. Significant results of this study show that velocity profile and temperature distribution increase with the increase in thermal radiation parameter, while the velocity and temperature distribution decrease with the increase in suction parameter. The results of this work have significant application in refrigeration industry for refrigeration, energy transfer in cooling tower, evaporation, etc. [ABSTRACT FROM AUTHOR]

Hydrogen is a high pressure gas, hence hydrogen natural gas mixture require an accurate prediction of transient flow parameter. The reduce order modelling is used in analysis of transient flow, where viscosity change is neglected thereby reducing the governing equations to Euler equation based on the assumption. The hydrogen natural gas mixture is homogenous, with pressure and velocity considered as principal dependent variable where polytrophic process is admitted. For improvement on the accurate prediction of flow parameters on the analysis of transient flow of hydrogen natural gas mixture in pipeline implicit Steger-Warming flux vector splitting method (FSM) used in the construction of efficient reduce order model. The result shows significant improvement on efficiency, accuracy and uniqueness when compared to normal conventional numerical techniques. The effect of heat transfer is observed on heat flux and internal energy of transient flow. The methods of reduced order with and without static correction show significant agreement for different gas ratio. The prediction of flow parameter along the pipeline can improve gas delivery and the analysis of transient flow behaviour at any point during the flow. [ABSTRACT FROM AUTHOR]

The study investigated the presence of Trypanosoma brucei gambiense in livestock to ascertain their reservoir role and also screened for other pathogenic trypanosomes of animals in Tafa Local Government Area of Niger state, Nigeria. A total of 460 livestock comprising (cattle, sheep, goats, and dogs) selected at random were bled, examined using the buffy coat and Giemsa stained thin film and packed cell volume estimated. Questionnaire was filled for each animal on demography, awareness and management practices. An overall prevalence of 2.17% with Trypanosoma brucei, T. congolense, T. vivax and a mixed infection of T. brucei and T. congolense observed microscopically awaiting characterization. Interviews revealed high awareness (82.8%) of tsetse and trypanosomiasis described as bush disease and abortion in four cows. The PCV values were within the normal range, however, a significant decrease (P<0.05) was observed in sheep aged 7months to 4years in two communities. Therefore, the study indicated the presence of T. brucei and other trypanosomes suggesting that animal trypanosomiasis is still a problem to animal health and wellbeing in the study area. The study recommends effective integrated chemotherapy and vector control including livestock rearing under intensive management system to boost livestock production and productivity. [ABSTRACT FROM AUTHOR]

In this paper, a mathematical model for the control of single weed species population density is proposed. The model's steady-state solutions were obtained and analysed for local and global stabilities. The analysis reveals that the model is locally asymptotically stable and as well globally stable. Graphical simulations were carried out to support the analytic analysis of the model for the global stability and concludes that, weed proliferation may be controlled if the control strategy is target at the recruitment factors. Base on this finding, it is recommended that for effective control, weeds management tactics should be targeted at the recruitment stage rather than the usual practice of controlling mature weed through the application of herbicides. Hence, application of the results of this work may reduce or eradicate the weeds density and improve crop yield at its optimum capacity for sustainable food production. [ABSTRACT FROM AUTHOR]

The effect of Brinkman number and magnetic field on laminar convection in a vertical plate channel with uniform and asymmetric temperatures has been studied. The dimensionless form of momentum and energy balanced equations has been solved using one term perturbation series solution. The solution of the dimensionless velocity u and temperature θ were obtained. The numerical values of the skin friction and the Nusselt number were obtained and tabulated. It was found that the effect of magnetic parameter enhances the effect of flow velocity by suppressing the turbulence while Brinkman number has accelerating effect on the temperature profile. [ABSTRACT FROM AUTHOR]

This article presents an Internet worm countermeasure mechanism that uses DNS activities as a behavioural technique to detect worm propagation. The mechanism also uses a data-link containment solution to block traffic from an infected host. The concept has been demonstrated using a developed prototype and tested in a virtualised network environment. An empirical analysis of network worm propagation has been conducted to test the capabilities of the developed countermeasure mechanism. The results show that the developed mechanism is sensitive in containing Internet worms. [ABSTRACT FROM AUTHOR]

In this work, we designed, developed and implemented an examination result processing template for all the Postgraduate programmes in the Faculty of Science, Kaduna State University, Kaduna. The designed template when fed in with data computes and grades students appropriately. Its design was done using the "IF" and "OR" logical functions. It was deployed and tested for the performance in terms of accuracy and speed, and as attested by the end users, it is excellent. [ABSTRACT FROM AUTHOR]