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Vol 2 Issue 2

Volume  2  Issue  2

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Kaoud H. A.

Is it possible to stop cancer mechanisms; by controlling cell’s redox

[Abstract] [Full-Text PDF] [html]

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Pragya

A Theoretic Study of degradable polymers

[Abstract] [Full-Text PDF] [html]

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Ubani, Emmanuel, Echeme Ibeawuchi, Ukwuoma,Benjamin

Development of Strategies for Effective Project Scope Management: A Study of National Integrated Power Projects (NIPP)

[Abstract] [Full-Text PDF[html]

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Odedeyi Dominic, Ademeso Adetola

Reproductive Performance, Growth and Economic Evaluation of Clarias gariepinus Broodstocks at Different Feeding Levels

[Abstract] [Full-Text PDF] [html]

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Balogun, Oluwafemi Samson, <Awoeyo, Oluwadarasimi Olayemi

A Comparison of ARIMA and AR Model Selection on Road Accident Data in Nigeria

[Abstract] [Full-Text PDF] [html]

Abstract: In this research work, time series model selection was performed by given consideration for a number of models that most suitable for the incidence of accident cases in Nigeria. Among the candidate models considered are the Autoregressive (AR), Autoregressive Integrated Moving Average (ARIMA), and Moving Average (MA) models each at various parameters specifications. Results from this work showed that the best models that are suitable to describe the accident cases in Nigeria are the ARIMA(3,1,1) according to the Mean Square Error (MSE) and Akaike Information Criteria (AIC). National data set on cases of accident in Nigeria primarily collected by Federal Road Safety Commission (FRSC), Nigeria from 2004 to 2011 was employed in this research.

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 Ismail K. Abbas , Ghazwan G. Ali

Study the Effect of Annealing Temperatures on the Structure and Morphological Properties for Porous Silicon

[Abstract] [Full-Text PDF] [html]

Abstract: In this research, Porous silicon (PSi),P-type silicon of resistivity (0.01- 0.02 Ωcm) ,has been prepared by electrochemical etching (ECE) technique, for etching time (10,20&30 min.) with current density (30 mA/cm2 ) and HF concentration (15%). Structural and morphological properties which include (XRD, AFM) have been studied before and after annealing process for (400, 500 and 600)oC for time 30 minute. Results of the X-ray diffraction (XRD) exhibit that crystallite’s size still in nano range for samples before and after annealing. Porous silicon has(FWHM) broader than C-Si due to quantum confinement effect .Study of atomic force microscope reveals for samples before and after annealing that pore diameter, roughness and RMS still in nano range and that pore diameter increases with increasing etching time.

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Maniriho Aristide and Bizoza Alfred

Analysis of Allocative Efficiency among Small Scale Farmers in Musanze District, Northern Rwanda

[Abstract] [Full-Text PDF] [html]

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Saraf Amit

Chromatographic Fingerprint Profile of Alkaloids of Abrus precatorius Linn. by HPTLC

[Abstract] [Full-Text PDF]  [html]

Abstract: Fingerprint analysis approach using HPTLC profile has become the most potent tools for quality control of herbal medicines because of its simplicity and reliability. It can serve as a tool for identification, authentication and quality control of herbal drugs. The aim of the present study is to determine the chemical profile and alkaloid composition of the medicinally important plant Abrus precatorius Linn. Leaves of plant under study, exhibit antifertility activity and is used in preparation of herbal medicine1. Hence to prove its authenticity and diversity in Alkaloid composition, the development of chemical fingerprint is need of the hour. The study was planned to develop a fingerprint profile of leaf extract of Abrus precatorius Linn. Alkaloidal fraction from the leaves of this plant was developed in the mobile phase – Toluene : Ethyl acetate : Diethyl amine ( 7:2:1) and scanned under visible light at 540 nm and UV at 254 nm & 366 nm. Chromatogram was then derivatized with Dragendroff‟s reagent followed by heating at 105 0C. The plant showed specific fingerprints at 254 nm and 366 nm. HPTLC fingerprints of alkaloidal fraction were obtained and Rf values were recorded. The alkaloidal bands can be used to discover bioactive products that may serves leads for the development of the new pharmaceuticals that address hither to unmet therapeutic needs.

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Ghosh Uttam, Sengupta Srijan, Sarkar Susmita , Das Shantanu

Characterization of Non-Differentiable Points of a Function by Fractional Derivative of Jumarie Type

[Abstract] [Full-Text PDF] [html]

Abstract: The Birth of fractional calculus from the question raised in the year 1695 by Marquis de L’Hopital to Gottfried Wilhelm Leibniz, which sought the meaning of Leibniz’s notation for the derivative of order N when N = 1/2. Leibnitz responses it is an apparent paradox from which one day useful consequences will be drown. There are many functions which are continuous everywhere but not differentiable at some points, like in physical systems of ECG, EEG plots, and cracks pattern and for several other phenomena. Using classical calculus those functions cannot be characterized-especially at the non-differentiable points. To characterize those functions the concept of Fractional Derivative is used. From the analysis it is established that though those functions are unreachable at the non-differentiable points, in classical sense but can be characterized using Fractional derivative. In this paper we demonstrate use of modified Riemann-Liouvelli derivative by Jumarrie to calculate the fractional derivatives of the non-differentiable points of a function, which may be one step to characterize and distinguish and compare several non-differentiable points in a system or across the systems. This method we are extending to differentiate various ECG graphs by quantification of non-differentiable points; is useful method in differential diagnostic. Each steps of calculating these fractional derivatives is elaborated.

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Moreno João Roberto Sartori; Slewinski Anderson

Mechanical Studies of the Novel Nickel-Free Stainless Steel as Alternative To the Conventional Stainless Steels

[Abstract] [Full-Text PDF] [html]

Abstract: This study aimed to analyze the mechanical behavior of an austenitic alloy high strength and free of Nickel taken as an alternative to replace the alloys commonly used in Ni-Ti and Cr-Ni for performance in prosthesis, instrumentation and devices both in the medical field as dental. The higher nitrogen and carbon contents in the alloy second ASTM F 2581 – 07, with 0.19%C; 0.42%Si; 10.38%Mn; 17.10%Cr; 3.05%Mo; 0,48%N and 0,02máx Ni, ensure a high purity, a combination of high strength and toughness and, simultaneously, a stable, completely austenitic, microstructure without ferrite and grain boundary precipitates. Tensile strength tests, toughness and hardness showed an important provision of care for biotechnologically application in the human body, for patients allergic to nickel. The biocompatibility, proved in testing, in combination with the very good corrosion resistance, provides the optimum condition and necessary safety for use in or in contact with the human body. An excellent polishability is ensured by the homogenous microstructure and the high purity of the material. A high potential for work-hardening, enabling strength of 1895MPa/micro hardness of 400HV showed particularly in tensile strength (1.8 times greater than alloys Ni-Ti and 2.9 times greater than alloys Cr-Ni), allows the use in high strength applications.

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Youssef H. A. M., Mansour M. A.M., Al-Zahrani S. S. M., Ayasreh I. R. A. and Abd El- Karim R. A. K.

Prioritizing Palliative Care: Assess Undergraduate Nursing Curriculum, knowledge and Attitude among Nurses Caring End-of-Life Patients

[Abstract] [Full-Text PDF] [html]

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