Open Access Case Study

A Novel Technique to Fabricate Iris Shading of Ocular Prosthesis - A Case Report

Prashant A. Karni, Dolly Gupta, Heena Sharma

Current Journal of Applied Science and Technology, Page 1-5
DOI: 10.9734/CJAST/2017/34124

The eye is a vital organ not only in terms of vision but also being an important component of facial expression. Loss of an eye or a disfigured eye has a far-reaching impact on an individual’s psychology. Additionally it affects ones social and professional life. The need for artificial eye’s can sometimes be made satisfied by stock prosthesis that are available in standard sizes, shapes and colors.

Proper positioning of the iris disk in the sclera is vital in fabricating the custom made artificial eye to mimic natural appearance if not, may result in squint eyed appearance.

There are many techniques to fabricate the ocular prosthesis to mimic the natural eye. The present technique is simple and economical to fabricate the ocular prosthesis with commercially available color contact lens.

Open Access Original Research Article

Biochemical and Functional Properties of Yam Flour during the Post-harvest Conservation of Dioscorea alata Cultivar « Azaguié »

Kouadio Chiado Julie Nina, Dan Chépo Ghislaine, Konan Kouassi Hubert, Assoi Yapi Désiré Patrice, Kouamé Lucien Patrice, Kamenan Alphonse

Current Journal of Applied Science and Technology, Page 1-10
DOI: 10.9734/CJAST/2017/32404

Aims: To be follow the biochemical and functional properties of yam flour during the post-harvest conservation of yam « Azaguié » (Dioscorea alata) tubers.

Study Design: Analysis of variance (ANOVA) was carried out in this work.

Place and Duration of the Study: Food Science and Technology Training and Research Unit, Nangui Abrogoua University, Abidjan, Côte d’Ivoire, from December 2014 to February 2016.

Methodology: The yam tubers stored after harvest in a warehouse were kept for 6 months. Tubers were randomly taken for the preparation of flour every two months. Flours were obtained after grinding and sieving the pulp pieces and dried at 45°C for 48 h. Thereafter, the biochemical and functional analyses were performed on these different flours.

Results: except for the lipid contents, all biochemical properties that were measured vary significantly (P ≤ 0.05) with post- harvest conservation time of the yam tubers. Dry matter, total sugars and reducing sugars increased. By cons, protein, phenolic compound, ash and minerals (calcium, copper, potassium, magnesium and zinc) decreased with post- harvest conservation time of the yam species tubers. With regard to functional properties studied, water absorption capacity (WAC), oil absorption capacity (OAC) and wettability increased significantly (≤ 0.05) with post-harvest conservation time of the yam tubers. However, the water absorption index (WSI), hydrophilic lipophilic index (HLI), bulk density, foaming capacity and foam stability decreased significantly (P ≤ 0.05) during post-harvest conservation of yam tubers.

Conclusion: This study shows the importance of post-harvest conservation time of the yam tubers in the use of these categories of flours in food technology.

Open Access Original Research Article

Potential of Magnetic Sand as Catalyst for the Heterogeneous Transesterification of Luffa (Luffa cylindrica) Seed Oil to Biodiesel

F. J. Tukur, J. T. Barminas, M. E. Khan, A. Abel

Current Journal of Applied Science and Technology, Page 1-11
DOI: 10.9734/CJAST/2017/30482

The catalytic activity of crude Magnetic sand obtained from Michika Local Government Area of Adamawa State, Nigeria, in converting luffa oil to its methylester was investigated. The X-ray diffraction spectra have confirmed the sample to be crystalline phase of magnetite Fe2O3. X-ray fluorescent analysis revealed that the sample contains several impurities in various minute quantities which act as dopants substituting some parts of Fe in the spinel structure without forming any other individual phase. The crystallite size was found to be 78.10 nm. Fe3O4 was used as heterogeneous catalyst for the conversion of Luffa oil to its methyl ester. The effect of methanol/oil molar ratio, reaction time, catalyst amount and reaction temperature were investigated. The optimum yield of 34.1% of Luffa methyl ester was obtained at 60°C (temperature), 15:1 methanol/oil molar ratio, 5 h reaction time and 5wt% catalyst amount. Fuel properties of Luffa methyl ester were also investigated; Viscosity at 40°C is 6.7mm2/s, Flash point 81°C, Pour point 4°C, Ash content 0.03%, Density 0.88 g/cm3, and Specific gravity at 15°C being 0.82. Functional characteristics of Luffa methyl ester was obtained using Fourier transform infra- red spectroscopy (FT-IR). The fuel viscosity and flash points are indicative of the viability of this fuel in diesel engines.

Open Access Original Research Article

Scientific Notes on Some Species of Genus Globorotalia from Kafe Field, Offshore Western Niger Delta, Nigeria

S. O. Obaje

Current Journal of Applied Science and Technology, Page 1-6
DOI: 10.9734/CJAST/2017/33892

In this paper, some species of the Genus Globorotalia from the study area were identified and taxonomic notes on them were transcribed. The study area is located in Kafe field, offshore western Niger Delta, Nigeria. The clayey and shaly components of the ditch cuttings obtained from five wells at 18.29 m intervals were used. Standard micropaleontological preparation method was used. The identified species of the Genus Globorotalia from the study are Globorotalia mayeri CUSHMAN & ELLISOR, Globorotalia continuosaBLOW, Globorotalia obesa BOLLI, Globorotalia menardii "A" BOLLI and Globorotalia foshi lobata BERMUDEZ.

Open Access Original Research Article

Comparative Efficacy of Organic and Inorganic Sources of Nutrients in Paddy (Oryza sativa L.)

Saurav Sharma, J. P. Saini, Ranu Pathania, Ashish Kumar

Current Journal of Applied Science and Technology, Page 1-8
DOI: 10.9734/CJAST/2017/33914

The experiment was conducted at the research farm of Department of Organic Agriculture, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur during kharif 2014 to study the comparative efficacy of organic and inorganic sources of nutrients in paddy. The experiment consisted of eight treatments comprising of combinations of four nutrient management treatments viz., Organic nutrient management (soil treatment with jeevamrit & seed treatment with biofertilizer, vermicompost (VC) 10 t ha-1 & 3 sprays of vermiwash at 15, 30, 45 days after sowing), Inorganic nutrient management (recommended NPK), Integrated nutrient management (5 tonnes VC + 50% of recommended NPK), Control (Farmer’s practices) (2.5 tonnes VC + 25% of recommended NPK) with two ecosystems i.e transplanted and direct seeded rice (rainfed) were tested in split plot design, replicated thrice. Growth, yield attributes, grain and straw yield of rice was increased in transplanted ecosystem and integrated nutrient management practice. The transplanted ecosystem recorded 18.64 per cent higher yield and 50.60 per cent higher net return per rupee invested over direct seeded rainfed ecosystem. Integrated nutrient management being statistically at par with organic nutrient management recorded the higher paddy yield over inorganic nutrient management and farmer’s practice. Integrated nutrient management recorded higher net returns per rupee invested (1.18) but remain statistically at par with organic nutrient management and inorganic nutrient management.

Open Access Review Article

A Comprehensive Review: Energy Storage System for Hybrid System Including Wind Energy Generation System and Solar Energy Generation System for Utility Grid

Virendra Sharma, Lata Gidwani

Current Journal of Applied Science and Technology, Page 1-13
DOI: 10.9734/CJAST/2017/34383

Small grid industry has tremendous growth in the present market. This paper presents a comprehensive review of hybrid energy generation system with energy storage system. The hybrid system is the combination of wind energy conversion system and photo voltaic energy generation system with energy storage system. This system is grid connected so as to feed the energy in the grid and take the energy from the grid. Since this power is very highly variable when it is generated by the wind, solar etc. Consequently, Renewable energy has limited contribution in the power generation and this type of energy generation is difficult to control. So this problem is solved by integration of this hybrid energy system with Energy Storage System.

This paper presents the up to date Technical review for Energy generation System with the integration of energy storage system. The aim of this paper is to provide a broad prospective on the status of hybrid energy generation with Energy Storage System and grid interfacing technology to researcher & application engineers dealing with advantages, disadvantage and main application when it is connected to the power system. A more than hundred research articles on this subject is allow appended for a quick overview & reference.

Open Access Review Article

Novel Classification for Tracking Techniques Maximum Power Point in Solar Photovoltaic Systems

Ali Jasim, Yuri Shepetov

Current Journal of Applied Science and Technology, Page 1-13
DOI: 10.9734/CJAST/2017/34406

This paper gives an overview and classification of methods maximum power point tracking (MPPT) controller is fundamental to acquire the maximum power from a solar array in the photovoltaic systems as the PV power module varies with the temperature and solar irradiation. Advantages and disadvantages of each method are described. These techniques vary in many aspects as: simplicity, speed of convergence, fast dynamic response, range of effectiveness. The MPPT methods can be classified into three broad categories: indirect, direct and hybrid methods. An assortment of MPPT methods have been proposed and implemented. This review paper introduces a classification scheme for MPPT methods based on three categories: indirect, direct and hybrid methods.