This paper focused on the application of modal analysis method to determine the voltage stability of the Nigeria 44 bus 330kV transmission grid network and to determine the network’s weakest buses. Modal method calculates the smallest eigenvalue and all the associated eigenvector...
Open access
Research Article10.9734/jerr/2021/v20i1117411
Innovation on die attach curing process on semiconductor industry play a big role to have a robust process eliminating unwanted gross unit rejection. Resolving failures and hardware breakdowns on the exhaust system of oven curing process are the focus of this paper. Discoloration...
Open access
Research Article10.9734/jerr/2021/v20i1117406
Semiconductor assembly mass production environment has means of testing and verifying bond consistency and reliability during wire bonding. Common bond integrity assessment is ball shear testing (BST). This test enables analysis of the strength between the bond pad and a ball bon...
Open access
Research Article10.9734/jerr/2021/v20i1117407
Globally, one amongst the major agro-based industry contributing significantly is Coffee. Coffee growing estates use water for pulping and the wastewater generated from coffee pulping activity is generally discharged to the water bodies. The objective of this study was to evaluat...
Open access
Research Article10.9734/jerr/2021/v20i1117405
The increasing demand and consumption of cement have necessitated the use of slag, fly ash, rice husk ash (RHA), and so forth as a supplement of cement in concrete construction. The aim of the study is to develop a replacement of the cement with rice husk ash and slag combined wi...
Open access
Research Article10.9734/jerr/2021/v20i1117403
The interest for improving the quality of coffee production has led to the increased use of wet processing so as to highlight the quality and aroma of the beverage. The coffee pulping process has been causing environmental problems at the local level not only due to the consumpti...
Open access
Research Article10.9734/jerr/2021/v20i1117404
In this paper, a comparison study has been presented to see the difference between the theoretical and finite element analysis for ball bearing. Throughout that study, a finite element analysis is performed to determine the maximum contact pressure and maximum stresses induced in...
Open access
Research Article10.9734/jerr/2021/v20i1117402
Stir casting is an economical process for the production of aluminum matrix composites. There are many parameters in this process, which affect the final microstructure and mechanical properties of the composites. In this study, micron-sized SiC and Gr particles were used as rein...
Open access
Research Article10.9734/jerr/2021/v20i1117401
In this digital world, Video analysis is the most important and useful task. Currently, tremendous tasks have been done in video analysis like compressing the videos, video retrieval process and video database indexing, etc. For all these tasks, one common step is segmenting the...
Open access
Research Article10.9734/jerr/2021/v20i1117399
The effect of calcined egg shell particles on the mechanical properties of epoxy resin had been studied. The egg shell was sun dried for 3 days and calcined at 800oC in an electrically fired furnace model KGVB. The calcined egg shell was ground in a locally fabricated pulverized...
Open access
Research Article10.9734/jerr/2021/v20i1117398