Open Access Short Research Article

Comparison of Electroencephalography Power Spectral Density between Duramater and Brain Cortex

Ahmad Faried, Misuari Sabirin, Agung B. Sutiono, Muhammad Z. Arifin, Richard Mengko, Tati L. E. Rajab

Current Journal of Applied Science and Technology, Page 1-6
DOI: 10.9734/BJAST/2017/30908

The intracranial electroencephalo- graphy (EEG) or electrocorticography (ECoG) is an invasive type of EEG which its electrodes are placed on the brain surface. It might be increases the amplitude of a recorded brain signal compared with the common EEG due to an impedance reduction. This study tries to analyze the difference by comparing the Power Spectral Density (PSD) of brain signals between duramater and brain cortex. The result shows that there is a distinction between the two sites, where the EEG recorded from brain cortex has a higher PSD than from duramater.

Open Access Original Research Article

Nutritive Assessment of Milk from Fulani Herds in the Derived Savanna Zone of Nigeria

J. A. Akinlade, J. A. Alalade, M. K. Adewunmi, K. A. Adaramola, H. M. Tairu

Current Journal of Applied Science and Technology, Page 1-7
DOI: 10.9734/BJAST/2017/22403

The quality assessment of fresh cow milk collected from Fulani herds in Ogbomoso, Arolu, Ife-Odan, Oyo and Iseyin in the derived Savanna Zone of Nigeria were carried out in a Completely randomized design with emphasis on the nutrient composition and microbial loads.

Four fresh cow milk samples from separate settlements (rugas) were from Ogbomoso, Arolu, Ife-Odan, Oyo and Iseyin and preserved for seven days with 0.01 cm Potassium permanganate and kept in the refrigerator at 4°C before laboratory analyses. The moisture content of fresh cow milk from different locations ranged between 87.46-88.62%, the crude protein 3.26-3.85%, ash 0.65-0.75%, crude fat 3.49-3.55%, Lactose 0.46-0.64% and solid-non-fat 8.3-9.7%. Mineral composition of the milk showed that potassium content from different locations ranged between 0.46-0.64 percent, Calcium 0.21-0.23%, Magnesium 0.16-0.19%, Zinc 2.34-2.83%, Iron 0.32-0.56%, Copper 1.31-1.61%, Selenium 0.04-0.06%, Lead 0.00-0.14% and Cobalt 0.10-0.26%. Samples of fresh cow milk collected from Ogbomoso, Arolu and Ife-Odan had no traces of Salmonella and E. coli and thus contained low level of microbial count. Therefore, it can be concluded from this study that with the exceptions of the microbial counts, and lead contents there were no differences in all other parameters considered among the various locations in the zone.

 

Open Access Original Research Article

ICTs and Early Literacy: Spontaneous Insertions of Preschoolers during Reading, E-book versus Traditional Book

Triantafyllia Natsiopoulou, Michael Vitoulis, Μaria Bletsou

Current Journal of Applied Science and Technology, Page 1-12
DOI: 10.9734/BJAST/2017/30744

Aims: The aim of the present study was to examine the active participation of preschool children during reading comparing their reaction between the traditional book and e-book.

Study Design: Cross-sectional study.

Place and Duration of Study: This study took place in Greece, during 2015-2016.

Methodology: The sample consisted of 69 children, aged 3-5 years, who read a traditional book and an e-book. They also participated 5 early childhood educators. At the end of the story the children were asked about their preference in the way of reading the story. Then the interaction of children was analyzed through the approach of “spontaneous insertions” of children based on a system of categories established by previous researches.

Results: It was found that in both reading practices, children made insertions regarding the content of the story, most of which were of low abstraction. In the traditional book reading children made significantly more insertions than in reading an e-book, to low abstraction categories (clarification, questions for clarification, names) and to high abstraction categories (relating to real life, recalling). It is noted that most children stated their preference to the electronic reading. 

Conclusion: Based on these findings, it could be claimed that reading an e-book may be accompanied by behaviors that characterize the traditional book reading such as comments on the story and children’s active participation to reading. Since neither of the two types of books does seem to prevail overall, it is deduced that the combined use of e-book with the traditional book, under early childhood education, could contribute both in children's language development and also familiarize them with digital learning environment.

Open Access Original Research Article

Analysis of Dispersion and Nonlinear Property in Doping Defected Core Spiral Photonic Crystal Fiber

Japatosh Mondal, Md. Sajjad Hossain, Mohammad Shaifur Rahman

Current Journal of Applied Science and Technology, Page 1-10
DOI: 10.9734/BJAST/2017/31212

We propose a novel nearly zero-dispersion fiber (NZDF) at the operating wavelength based on GeO2 doped SiO2 square defected core spiral photonic crystal fiber (dd-SPCF). The 2-D finite element method with perfectly matched layer boundary condition is introduced to investigate the guiding properties using COMSOL Multiphysics 4.2.0.150. The angular displacement and diameter of circular air holes of spiral arms in the designed dd-SPCF have been tuned to offer near zero dispersion as well as low effective area. The proposed dd-SPCF shows promising dispersion characteristics (-0.000169 ps/km-nm) with very low effective area (2.6516 μm2) and high nonlinear 76.44 W-1km-1 parameter at operating wavelength 1.55 μm, making it a suitable candidate for chromatic dispersion controller and nonlinear optical applications.

 

Open Access Original Research Article

Retracted: Implications on Privacy and Forensics on Current Browsers

Azween Abdullah, Ramachandran Ponnan

Current Journal of Applied Science and Technology, Page 1-15
DOI: 10.9734/BJAST/2017/31760

To date, the evolution of Web-related technologies has been mainly driven by the user’s quest for ever faster and more intuitive World Wide Web (WWW). One of the most recent stages of this evolution is built around the idea that the user experience can be further improved by enabling the browser to predict and preload Web resources the user is most likely to seek. While this concept of ‘pre-browsing’ is beneficial from the point of view of speed and performance, little thought has been put into understanding and analyzing its potential implications on ‘other’ metrics – including user reputation and privacy.

In this paper, we first provide a comprehensive overview of the main pre-browsing mechanisms as implemented in/by today’s browsers. Subsequently, we outline a few hypothetical (yet very real) scenarios in which these mechanisms end up turning the browser into a dangerous tool that acts against its very own user. The ultimate goal of our work is to make the wider Internet community critically rethink the way pre-browsing mechanisms are implemented and used in today’s WWW.

CCS Concepts: Information systems ➝ World Wide Web ➝ Social recommendation. • Security and privacy ➝ Systems security ➝ Browser security. • Applied computing ➝ Computer forensics ➝ Evidence collection, storage and analysis.

 

Retraction Notice: This paper has been retracted from the journal after receipt of written complains. This journal is determined to promote integrity in research publication. This retraction is in spirit of the same. After formal procedures editor(s) and publisher have retracted this paper on 19th May-2017. Related policy is available here: http://goo.gl/lI77Nn

 

Open Access Original Research Article

Application of Multiple Ecological Risk Indices for the Assessment of Heavy Metal Pollution in Soils in Major Mechanic Villages in Abuja, Nigeria

Christopher I. Ekeocha, Cynthia E. Ogukwe, Joy O. Nikoro

Current Journal of Applied Science and Technology, Page 1-10
DOI: 10.9734/BJAST/2017/30779

Heavy metal contamination has become a serious environmental problem due to their negative effects on humans, organisms, soil quality, underground water and ecosystem. This research was targeted at the use of multiple ecological risk indices approach in assessing the ecological risk associated with heavy metal contamination in soils in some mechanic villages in Abuja, central Nigeria. To achieve this set objective, four pollution indices models namely: contamination factor (Cf), ecological risk factor (Er), degree of contamination (CD) and potential ecological risk index (PERI) were explored. Fifteen soil samples were randomly collected with a hand dug auger to a depth range of 0-15 cm with five sample points from each of the three investigated mechanic villages. A control sample was also collected from a distance of 100 km where neither commercial nor industrial activities take place. The sampled soils were further subjected to standard chemical analysis. The automated Atomic Absorption Spectrophotometer (AAS) was used for this purpose. The results of the chemical analysis revealed that concentrations of heavy metals in Apo, Kugbo and Zuba mechanic villages followed a trend of Cu > Zn > Cr > Fe > Pb > Ni > Cd; Zn > Cu > Cr > Ni > Fe > Pb > Cd and Zn > Cr > Cu > Fe > Pb > Ni > Cd respectively. The multiple ecological risk indices models explored in the study showed various ecological risk level associated with heavy metal contamination of soils from the investigated sites with classes ranging from low to very high ecological risks. This could be traceable to anthropogenic activities like indiscriminate discharge of heavy metal containing waste in soil and poor waste management practice in the mechanic villages. This calls for urgent measure in curtailing indiscriminate waste discharge and the introduction of environmental friendly waste management in the mechanic villages so as to avert epidemics and environmental degradation due to heavy metal pollution.

 

Open Access Original Research Article

Treatment of Municipal Wastewater by Subsurface Flow Wetlands Modified to Rural Communities in Mexico

Luis J. Osornio-Berthet, Icela D. Barcelo-Quintal, Magdalena García-Martínez, Hugo E. Solís-Correa, José T. González-González

Current Journal of Applied Science and Technology, Page 1-13
DOI: 10.9734/BJAST/2017/31425

In this work, efficiency and quality of water by artificial wetland with subsurface flow were obtained. This wetland is 12.15 m long and 8 m wide with three channels. Its substrate bed consists of volcanic rock (“tezontle”), with three particle size (5-10, 10-15 and 15-20 cm), where the influence of porosity and its relation to hydraulic conductivity were determined, both parameters were related to Manning and Darcy equations for obtain water flow behaviour in each channel of wetland. The system was planted with Phragmites australis and Typha latifolia. For input to each channel were designed curved shapes with slope of radius 2.67 m, to avoid short circuits, with 6% minimum curvature, 1% slope, 0.5 m/min minimum velocity, and 2 L/s of flow (expense). Quality parameters of treated water were evaluated and with IBER software was modelled the hydrodynamic from wetland. It was concluded from results that curves sloped forms in channels improve treatment, achieving more efficiency. Furthermore the result of hydrodynamic modelling indicates that flow between channels is homogeneous, continuous and short circuits are avoided.