This study aims to develop polyimide etching process on the silicon die after decapsulation to resolve the wire shear issue during ball shear data gatherings. The shear strength of the ball is affected by the presence of polyimide insulator during ball shearing process, due to th...
Open access
Research Article10.9734/jerr/2020/v12i117073
Traffic noise at two locations which are Rumuokoro and Rumuola in Port Harcourt city, Rivers state Nigeria was studied. The study was done for 3 days at each location. Variables such as atmospheric parameters and traffic density were measured along with the noise measurement. The...
Open access
Research Article10.9734/jerr/2020/v12i117072
This study provides experimental investigation of the mechanical and physical properties of reinforced geopolymer concrete based on Ground Granulated Blast Furnace Slag (GGBS). This research demonstrates the influence of various types of steel fibre on compressive, split tensile,...
Open access
Research Article10.9734/jerr/2020/v12i117070
The paper aimed to mitigate wafer defects such as large kerf shifting issue, dice pop-out occurrence and edge cut defects in the wafer preparation or pre-assembly stage of integrated circuits (IC) assembly manufacturing. With the introduction of new wafer preparation technologies...
Open access
Research Article10.9734/jerr/2020/v12i117071
The mechanical interlocking structure for quad-flat no-lead (QFN) assembly for densified leadframe degrades as the package becomes thinner. Detractors such as package reliability and design requirement hinder further qualification of leadframes with increased number of input/outp...
Open access
Research Article10.9734/jerr/2020/v12i117069
Ultraviolet (UV) radiation systems are a common method of inactivating bacteria in municipal water treatment but has not been applied in a paper mill operations. Determining the feasibility of installing such a system is the purpose of this report. Directly treating a starch solu...
Open access
Research Article10.9734/jerr/2020/v11i417068
The never-ending trend for package miniaturization has been driving the semiconductor industry to the brink of technology. Hence, development of new technologies is necessary to cope up with the demand for advance and aggressive process capabilities. The paper is all about the ch...
Open access
Research Article10.9734/jerr/2020/v11i417067
Flow of fluids subjected to thermal radiation has enormous application in polymer processing, glass blowing, cooling of nuclear reactant and harvesting solar energy. This paper considers the MHD stagnation point flow of non-Newtonian pseudoplastic Williamson fluid induced by buoy...
Open access
Research Article10.9734/jerr/2020/v11i417065
The capacity of aqueous Tetracarpidium conophorum Shell (TCE) Extract to inhibit pipeline steel corrosion in 0.25 M H2SO4 acid was investigated using weight loss and Uv-visible spectroscopy techniques. The phytochemical components of Tetracarpidium conophorum were identified usin...
Open access
Research Article10.9734/jerr/2020/v11i417066
This paper represents an attempt to examine the effects of Cutoff Grade (COG) and Stripping Ratio (SR) on the Net Present Value (NPV) for the proposed gold mine in Hamama area, hence to attain best operating condition corresponding to the optimum COG and SR in the proposed gold...
Open access
Research Article10.9734/jerr/2020/v11i417064