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All published articles 4428

Recent Advances on Mercury Speciation in Aquatic Ecosystems, Health Effects and Analytical Techniques

Solomon Omwoma, Silah C. Lagat, Joseph O. Lalah, Philip O. Owuor & Karl-Werner Schramm · Current Journal of Applied Science and Technology · 2017

Elemental mercury is not as poisonous as its congeners such as methyl mercury and dimethyl mercury, especially at trace levels. However, understanding the speciation mechanisms of mercury in aquatic ecosystems offers an opportunity to appreciate the dangers emanating from element...

Open access Research Article 10.9734/BJAST/2017/31635

Mammogram Classification Using Discrete Wavelet Transform Features and a Novel Vector Quantization Technique for Breast Cancer Detection

Ahmad M. Sarhan & Radaan A. Al-Dosari · Current Journal of Applied Science and Technology · 2017

In this paper, a digital mammogram classification system is presented. The proposed system uses the Discrete Wavelet Transform (DWT) to obtain   features from the input mammogram image. The proposed system suggests a new algorithm for generating the codebook used by the vector qu...

Open access Research Article 10.9734/BJAST/2017/30420

Simulation of Steady State Heat Conduction Using an Hybrid Floating Walk and Markov Chain Technique

Ademola A. Dare · Current Journal of Applied Science and Technology · 2017

Markov chain technique had been developed for numerical simulation of steady state heat conduction. However the technique could only be used to handle domain with regular boundaries. An hybrid of floating walk and Markov chain techniques has therefore been developed. The techniqu...

Open access Research Article 10.9734/BJAST/2017/30224

Response Time Improvement on One Time Password (OTP) Technique to Prevent Replay Attack in a Radius Environment

Yusuf Abdullahi, Muhammad Bashir Muazu & Adewale Emmanuel Adedokun · Current Journal of Applied Science and Technology · 2017

This research is aimed at the modification of the Remote Access Dial in User Server (RADIUS) protocol with the one-time password (OTP) technique for the authentication environment with a captive portal to prevent replay attacks. One of the important network security measures on a...

Open access Research Article 10.9734/BJAST/2017/29503

Geological, Geophysical and Seismological Investigations for Siting of Seismic Stations in Minna and Abakaliki, Nigeria for Data Reliability

U. K. Afegbua, T. A. Yakubu, M. S. Tsalha, C. O. Ologun, T. S. Oluwadare, D. Duncan, J. Uwazuruonye J. Uwazuruonye, G. Okwunwa, P. Ekweuzoh, M. Enang & O. A. Agoro · Current Journal of Applied Science and Technology · 2017

The goal of this study is to adopt international standard criteria to carefully select sites to host seismic stations in Minna and Abakaliki, Nigeria, that can give reliable seismic data with high network detectability, monitor local seismicity and record local events with improv...

Open access Research Article 10.9734/BJAST/2017/31078

Optimization in the Computation of Dielectric Constant of Methanol Using Debye Relaxation Method

T. J. Ikyumbur, M. Y. Onimisi, S. G. Abdu, E. C. Hemba & Z. J. Kirji · Current Journal of Applied Science and Technology · 2017

The Debye relaxation equation and its derivatives were used to analyze dielectric constant and loss factor of pure methanol in megahertz and gigahertz over the temperature range of 10°C to 50°C. This was done in order to ascertain which of the frequency ranges has the highest die...

Open access Research Article 10.9734/BJAST/2017/31374

Choosing the Optimal Segmentation Level for POS Tagging of the Quranic Arabic

Fadl Mutaher Ba-Alwi, Mohammed Albared & Tareq Al-Moslmi · Current Journal of Applied Science and Technology · 2017

As a morphologically rich language, Arabic poses special challenges to Part-of-Speech (POS) tagging. Words in Arabic texts often contain several segments; each has its own POS category. The choice of the segmentation level or the input unit, word-based or morpheme-based, is a maj...

Open access Research Article 10.9734/BJAST/2017/29754

Comparative Evaluation of Some Nutrient Contents and Antifungal Properties of Ground Musa paradisiaca (Plantain) Peels and Leaves

Anthony Cemaluk C. Egbuonu, Wisdom O. Nneji & Chimnonye A. Ukasoanya · Current Journal of Applied Science and Technology · 2017

Musa paradisiaca (plantain) fruit peels and the plant leaves may have some nutrients and antifungal properties. Thus, the study determined and compared some nutrients (minerals and vitamins) in the ground plantain peels and leaves and the antifungal property of the aqueous and et...

Open access Research Article 10.9734/BJAST/2017/28393

Rate Decline-based Models for Gas Reservoir Performance Prediction in Niger Delta Region

Anietie N. Okon, Daniel T. Olagunju & Julius U. Akpabio · Current Journal of Applied Science and Technology · 2017

This work considers the Decline Curve Analysis (DCA) approach as a quick tool to estimate the gas reservoir performance of field “ABC” in the Niger Delta region. The conventional Arps’ models: Exponential, Harmonic and Hyperbolic, alongside with the Reciprocal and Quadratic model...

Open access Research Article 10.9734/BJAST/2017/31184

Study of Sustainable Nautical Ecotourism Management on Kepulauan Seribu Jakarta

Linda Noviana & Laila Febrina · Current Journal of Applied Science and Technology · 2017

Kepulauan Seribu has nautical ecotourism potential that locates in the entire island. That potential become primary tourism activities in development of Kepulauan Seribu nautical ecotourism. In the last ten years, growth of tourists number occurs cause serious environmental degra...

Open access Research Article 10.9734/BJAST/2016/30757

A Design of an Automatic Web Page Classification System

Tarek M. Mahmoud, Doha Taha Nour El-Deen & Tarek Abd- El-Hafeez · Current Journal of Applied Science and Technology · 2017

Web Page Classification is one of the common problems of the today's Internet. In this paper, an automatic Web page classification system is introduced. The proposed system tries to increase the accuracy of a web page classification via combine the well-known Naïve Bayesian algor...

Open access Research Article 10.9734/BJAST/2016/30376

T.R.P Mechanism to Secure E-learning Information that Shared with Cloud Storage

Khalid Muhammad Al-Khafaji & Meltem Eryilmaz · Current Journal of Applied Science and Technology · 2017

The aim of the study is establish and implement a safe mechanism is: Technique Relationship Protected (TRP), by using a privacy control with the Auditor on the information shared between two of the most important services offered by modern technology, namely the E-learning system...

Open access Research Article 10.9734/BJAST/2016/30798

Formation Damage Analysis Due to Filtrate Invasion in Deviated Wells: A Numerical Approach

Oluwatoyin O. Akinsete, Adebayo I. Raji & Julius U. Akpabio · Current Journal of Applied Science and Technology · 2017

During production, drilling, completion, stimulation and work-over operations, the formation is exposed to several types of fluids which have high tendencies to impair and impact gas and oil productivity by reducing pore throat size and relative permeability. Therefore, it is des...

Open access Research Article 10.9734/BJAST/2016/31189

Modelling Leachate Pollution Index and Potential for Selected Municipal Solid Waste Dump Sites: A Case Study

Mamuyovwi Odia, Ify L. Nwaogazie, Eunice O. Nwachukwu & Gregory O. Avwiri · Current Journal of Applied Science and Technology · 2017

Unengineered and uncontrolled dump sites is a threat to human and the environment. Leachate infiltration from Municipal Solid Waste (MSW) posed great threats to surface and groundwater systems. Leachate samples were collected from Niger-Cat (NC), Don-Parkar (DP) and Orhuwhorun (O...

Open access Research Article 10.9734/BJAST/2016/31198