The paper study a novel approach which is developed and validated for Permanent Magnet Synchronous Motor (PMSM) motor with demagnetization fault. The analytical model is derived for the calculate the magnetic field distribution Permanent Magnet Synchronous Motor including with demagnetization fault to evaluate the backelectromotive force (EMF) induced and the electromagnetic torque in a Permanent Magnet (PM). The proposed model is used to analyze the effect of parameters (the magnetic field distribution, the back-EMF induced and the electromagnetic torque) by a finite element (FE) simulations.

Keywords - Finite element method (FEM), Permanent Magnet Synchronous Motor (PMSM), Demagnetization fault.

In this study, the effect of different applied voltages, wetness and polluted conditions on the surge arrester leakage current was evaluated using measurements and simulation models. In metal oxide surge arresters, leakage current usually flows across the arrester under normal operating condition. Leakage current is one of the factors which contribute towards degradation of surge arresters. The behavior of leakage current in a metal oxide surge arrester during normal operation, under different voltages, wetness and pollution conditions were analyzed. An 11 kV surge arrester model in three-dimensional space was subjected to finite element analysis (FEA) to determine the leakage current under different conditions...........

Keywords - Leakage current; Finite Element Analysis; Metal oxide; Surge arrester; Applied Voltages; Pollution.

The study does simulate the operation of on-grid solar power system based on the Simulink integrated in the MATLAB software. The simulation results can significantly reduce design time and cost, evaluate the feasibility of ideas and designs, compared to the implementations on hardware and experimental model.

Keywords - Solar power, on-grid, MATLAB, Simulink.

Wireless LAN technology is the best solution in overcoming the problem of signal coverage for remote areas by using a Yagi Antenna with a Corner reflector. In this research, the testing held at a frequency of 2.4 GHz to improve wi-fi reception in the process of receiving wireless USB adapter signals to wi-fi signals. Testing the Corner Antenna of Yagi Reflector held at any distance of 80 meters and 100 meters. The results of measuring the level of acceptability at the Corner Reflector of Yagi Antenna for ten attempts are obtain at an average of - 64.75 dBm at a distance of 80 meters and -68.75 dBm at a distance of 100 meters. From the results of the yagi antenna with a reflector in the form of a corner, the gain value of the gain at a distance of 80 meters is 14.1 dBm and at a distance of 100 meters, the best gain value is 34.25 dBm.

Keywords - Yagi Antenna, Reflector Corner, 2.4 Ghz WIFI, Signal Strengthening.

Automated Project Tracking Information System provides a simple interface for maintenance of project information and progress in Anambra State, Nigeria. Inabilityto know when projects are awarded, Inability to know when to receive projects, Poor checkmating of project awarded and abnormal documentation of project statistics are problems with Anambra State government in Nigeria. Automated project tracking information system is used by Anambra stateto; build an application that will store, process and activate information about all the projects awarded, design and develop an application package that will be useful for the tracking of project information for the State Government,maintain the records of different projects in the state, that are awarded to companies, the timeline and deadline a project is expected to be completed...........

Keywords - Automation, Project Tracking, Information System.

This work compares the strength of palm kernel shell concrete and natural aggregate (bush gravel) with equal weight of concrete of similar mix. Concrete cubes were cast using mix ratio 1:2:4 for natural aggregate, palm kernel and their strength compared with relative normal concrete. Palm kernel was used as replacement for coarse aggregate with varying percentages to ascertain the effect on overall strength. The more the quantity of palm kernel shell, the more the loss in the strength of the concrete. However, a low percentage of palm kernel shell in the volume of concrete serves as perfect alternative coarse aggregate for volume even as it helps in reducing the challenges of environmental pollution.

Keywords - Palm Kernel Shell, Gravel, Concrete, Strength and Structure.

The long-term purpose of this research is to obtain quality biogas that is renewable natural gas and can be used as fuel for combustion of electric generators as an effort to diversify energy in the region of small islands that is sustainable. Specific target to be achieved is to obtain methods/techniques to adsorb impurities contained in biogas, especially the element of carbon dioxide (CO2). The research was conducted to reduce CO2 levels in biogas by using coconut shell ash adsorbent. Biogas flow rate is varied with 5 variations (2, 4, 6, 8 and 10 lt / min) when passing through the adsorber, then analyzed the levels of CO2 absorbed and CH4 (methane) produced using the gascromatography test equipment. The main component contained in coconut shell ash contain silica. Silica in coconut shell ash has the ability to absorb water vapor contained in biogas. The increase in CO2 gas levels and CH4 gas levels is more...........

Keywords - Biogas, Adsorption, Coconut shell ash, Carbon dioxide, Methane.

The effects of full annealing, quenching and temper heat treatments to achieve excellent tool performance were investigated with our results establishing a linear correlation between microstructural modifications and changes in material properties. Isothermal transformations show that full annealing with a resultant microstructure of proeutectoid ferrite and pearlite developed an extreme increase in ductility by 30% and 6.78% respectively in terms of percentage elongation in length (PEL) and percentage reduction in area (PRA) with a 0.27% drop in hardness. Full annealing also led to reductions in yield, ultimate and fracture strengths by 32.50%, 21.57% and 18.12% respectively. Also, quenching which produced martensite with some retained austenite offered a remarkable 6.85% rise in hardness as well as 56.86% in tensile and 83.74% fracture strengths with no observable yield strength. Practical limitations like cracks, reductions in PRA by 32.63% and PEL by 18.99% were improved by tempering...........

Keywords - Tool-Steel, heat treatment, metallography, microstructure, full-anneal, quenching, tempering, martensite, cementite.

The computed tomography scanners were assessed using polymethyl methacrylate(PTW chamber type 30009, Freiburg, Germany) computed tomography phantoms, dose index for head and body were estimated(CTDIw) in this study and comparison made with corresponding console displayed doses(CTDIvol) together with their Dose Length Product(DLP). The study was performed on a Philips and Siemens Somatom Emotion computed tomography (CT) scanner systems. Dose measurements were made using 100 mm long pencil ion chamber connected to an electrometer with cylindrical CT dosimetry phantoms; head phantom (16-cm in diameter) and body phantom (32-cm in diameter) using scan technique of 120kVp,90kVp,110kVp and 130kVp with slice thickness of 3mm,5mm, 6mm and current-time products of 300mAs,200mAs,250mAs and 80 mAs were selected for charges of head and body phantoms for Philips CT simulator and Siemens 6 slice Somatom Emotion............

Keywords - Radiation dose, Computed tomography, Dose Length Product, Quality control.

Present study was conducted to evaluate the pesticide residuespresent in okra crop at different growth stages (vegetative, flowering and fruiting stages)in plant parts (shoot, root and fruits). From the study it is found that presence of organophosphorous (triazophos and ethion) and strobilurin (Trifloxistrobin) molecules were found in the samples of okra(Abelmoschus esculentus L) plant parts (Shoot and Roots) in all the growing stages analysed using GC MS/MS. Pesticide residues of triazophos, ethion and trifloxystrobin were found in okra fruit samples and the residue concentration of all the three molecules were higher than the EU MRL. From the residue data of okra fruit samples, residues are at non hazardous concentration to humans.The TMRI (Theoretical maximum residue concentration) residue levels of triazophos...........

Keywords - Pesticide residues, Okra growth stages, TMRI, MPI.

The study was designed to determine the effect of 5E-Learning Cycle Model (L.C.M.) on SS1 students' achievement and retention in geometry in Onitsha Education Zone of Anambra State. Six research questions were raised and six null hypotheses were tested. The study adopted a quasi-experimental, non-equivalent, control group design. Two co-educational secondary schools were drawn for the study using purposive sampling technique., oneout of the two sampled schools was through balloting assigned to experimental group while the other one to control group. The sample for the study consisted of 180 SS1 students (87 males and 93 females). The 5E-L.C. M. was used as treatment for experimental group while the control was exposed to conventional teaching method.............

Keywords - Achievement, Effect, 5E-Learning cycle model, Geometry, Retention, Senior Secondary School.