Remediation of crystal violet (CV) dye aqueous solution was attempted using acid activated raphia hookeri seeds (AARHS) as adsorbent. Adsorption equilibrium and kinetics of CV dye uptake onto AARHS were examined in series of experimental runs, and effects of contact time and init...
Open access
Research Article10.9734/jerr/2020/v15i417149
The paper focused on the improvement done in leadframe design to address the copper (Cu) burrs defect in assembly manufacturing. Newly qualified device struggled to hit the target yield due to the said Cu burrs defect. A holistic approach through why-why analysis was performed b...
Open access
Research Article10.9734/jerr/2020/v15i417150
This research was undertaken to determine the effects of corrosion on material performance using mild steel and Aluminum as selected material in seawater media. The result from the experiment showed higher corrosion rate in uncoated mild steel coupon as higher corrosion rate rang...
Open access
Research Article10.9734/jerr/2020/v15i317148
Although corona discharge is notorious for its detrimental effects, it is also used in many beneficial practical applications. Despite the existence of a variety of sophisticated theoretical and experimental methods for investigating corona discharge, we explore yet a much simple...
Open access
Research Article10.9734/jerr/2020/v15i317146
This study aims to study the influencing factors of traffic accidents in undersea tunnels and establish a prediction model of undersea tunnel traffic accidents. Through face-to-face inquiry and telephone survey, the relevant information of drivers who had traffic accidents in Jia...
Open access
Research Article10.9734/jerr/2020/v15i317147
The paper is focused on the glue voids reduction of quad-flat no-leads (QFN) devices evaluated on different die attach machine platforms. The evaluation was narrowed-down into two main die attach machines with the objective of attaining the best performance in terms of reducing o...
Open access
Research Article10.9734/jerr/2020/v15i317144
Understanding the dynamics, patterns, and probabilities associated with the correlates of crime is a promising way to managing crime. In this study, a multinomial logistic regression was used to predict the propensity of individuals for committing particular crimes. The secondary...
Open access
Research Article10.9734/jerr/2020/v15i317145
The evolution of smart technologies makes end users to choose portable, cost-effective and reliable devices for their daily life usage. The optimum service and superior quality of any such devices are always remain the centers of attraction for any customer. The advent of new tec...
Open access
Research Article10.9734/jerr/2020/v15i217142
As science and technology develop quickly, suitable measurement system is becoming more achievable. In dynamics of structures, measuring vibrations take a serious view during the process of design and construction to avoid resonance. The main objective of this study is to establi...
Open access
Research Article10.9734/jerr/2020/v15i217143
In this paper a new study to detect fetal heart rate (F H R) online from abdominal electrocardiogram (ECG) signal, which are extracted by three different algorithms of independent component analysis ICA (AMUSE, EVD2 and SOBI) is presented. Four stages for fetal electrocardiogram...
Open access
Research Article10.9734/jerr/2020/v15i217140
Vehicle detection, tracking, and counting play a significant role in traffic surveillance and are principle applications of the Intelligent Transport System (ITS). Traffic congestion and accidents can be prevented with an adequate solution to problems. In this paper, we implement...
Open access
Research Article10.9734/jerr/2020/v15i217141
In designing filters and antenna feeds at microwave frequency, the energy density and stop bands are of vital importance. To this development, this work is set out to determine the transmission coefficients behavior of substrates along with their energy density for a microstrip s...
Open access
Research Article10.9734/jerr/2020/v15i217139
With the continuous trend of new technologies in semiconductor manufacturing assembly, challenges and issues are unavoidable. This paper presents an improvement done in quad-flat no-leads (QFN) leadframe package to resolve the quantity of unit rejection due to leads scratch under...
Open access
Research Article10.9734/jerr/2020/v15i117136
To optimize the extrusion conditions of locally developed single screw floating fish feed extruder. A factorial experiment in completely randomized design was employed to study the effect of extrusion variables: feed moisture content (20, 30, and 40% wet basis), screw speed (158....
Open access
Research Article10.9734/jerr/2020/v15i117137
Electrical resistivity is one of the important particle–based factors influencing the performance of an Electrostatic Precipitator (ESP), a particulate control device commonly employed in most cement industries in Nigeria. Therefore, this study investigated the electrical resisti...
Open access
Research Article10.9734/jerr/2020/v15i117138