This paper addressed the popular issue of collinearity among explanatory variables in the context of a multiple linear regression analysis, and the parameter estimations of both the classical and the Bayesian approaches were compared using Mean Square Error (MSE) and Absolute bias. Five sample sizes: 10, 25, 50, 100 and 500 each replicated 1000 times were simulated using Monte Carlo method. Four degrees of correlation representing no correlation, weak correlation, moderate correlation and ...
The Aqueous, ethanol, hexane and ethyl acetate extracts of the leaves, bark and roots of Acacia albida, Anchomanes difformis, Boscia senegalensis, Bridelia ferruginea, Ficus ingens, Indigofera arrecta and Moringa oleifera were tested for possible source of antibacterial activities against selected clinical organisms found in the pediatrics hospital in Ondo and Ekiti State, Nigeria. The selected clinical organisms used for this research work are Salmonella typhi, Staphylococcus aureus, Klebsie...
It has been observed over the years that real life data are usually non-conforming to the classical linear regression assumptions. One of the stringent assumptions that is unlikely to hold in many applied settings is that of homoscedasticity. When homogenous variance in a normal regression model is not appropriate, invalid standard inference procedure may result from the improper estimation of standard error when the disturbance process in a regression model present heteroscedasticity. When...
The antimicrobial activities of the ethanolic, Aqueous and Ethyl acetate extracts of five Nigerian medicinal plant used as chewing sticks were tested against five microorganism, three bacteria and two fungi. The five medicinal plant tested are Vitellaria paradoxa, Vitex doniana, Sarcorcephalus latiolia, Vernonia amygdalina, Olax subcorpidica and the microorganisns are Staphylococcus aureus, Neisseria sieca, Streptococcus mutans and Lactobacillus salivarius and Actinomycetes viscosus. Out of t...
Bridelia ferruginea is commonly grown in Western Tropical Africa. The purpose of this research work is to determine the antimicrobial activities, qualitative and quantitative phytochemical screening, elemental composition, proximate analysis and anti-nutrient composition of purified fraction of Bridelia ferruginea extracts. The organisms used for this research are Staphylococcus aureus ATCC 29213, Escherichia coli ATCC 25922, Klebsiella pneumonia ATCC 35659, Pseudomonas aeruginosaATCC 25619,a...
ABSTRACT: The earth has three layers each consisting solid materials that make them hard and difficult to be penetrated. But, suppose we neglect every other hindrances, where do we expect to go when we dig straight down through the earth passing through all the layers. This paper explains all about what is experienced and the Scientific analysis when/if the earth where to be dug through.
ABSTRACT: Deriving Schrodinger equation has always been with students. This paper made it easy to students by analysing the steps involve in deriving the equation in the simplest manner. This is the easiest way to derive, understand and to define the meaning of the equation.
This work considers the direct solution of general third order ordinary differential equation. The method is derived by collocating and interpolating the approximate solution in power series. A single hybrid three-step method is developed. Taylor series is used to generate the independent solution at selected grid and off grid points. The order, zero stability and convergence of the method were established. The developed method is then applied to solve some initial value problems of third ord...
The goitrogenic potential of a plant or food depends upon the amount of active goitrogen present in it. Various procedures like soaking, washing, boiling and cooking can help in reducing the goitrogenic potency of these foods. These, along with the intake of iodide supplements are generally practiced in areas where goitrogenic foods are routinely consumed. In this experiment, goitrogenic contents of some commonly consumed vegetables were assayed and analysed.
ABSTRACT: Friction and Viscosity are very strong concepts in Physics and Engineering. This paper discusses some basic aspects of these topics and their application in daily natural phenomena.
The folding protein (and protein folder) is beset with a number of problems in translating the simple instructions encoded by DNA into the complex, three-dimensional structure of a correctly folded protein. Nature has solved these problems in an adequate, if not elegant, fashion, but we are just beginning to understand the variety of strategies that cells use to ensure efficient protein folding. This minireview will focus on several of the more general principles of assisted folding using the...
ABSTRACT: Students always ask the question, if there is such a strong electrostatic force of attraction between the nucleus and electrons at the lowest orbital as proposed by Bohr, how then does the electron orbit the nucleus without collapsing into it. This paper answers that question base on Neils Bohr's assumptions. The paper derives the speed of electrons on their orbits with respect to their orbital radius. This paper also explains why electrons at the higher orbital revolves the orbit a...
ABSTRACT In the present study, we investigated the prevalence of few bacterial organisms associated with urinary tracts infection and their antimicrobial susceptibility patterns. Total of Ninety (90) midstream urine samples were collected from outpatients with respect to their age group, gender and marital status attending health facility in Benue State University Teaching Hospital Makurdi. Each 0.1ml of urine sample was cultured on MacConkey agar and colonies showing lactose fermentation we...
Food industry wastes are an essential environmental contamination source. A large number of microorganisms including bacteria, yeast and fungi produce different types of enzymes like protease, lipase, chitinase, chitosan and ligninolytic enzyme having high biotechnological interest such as food processing, detergent, textile, pharmaceutical products, and medical therapy. Microbial synthesis of enzymes has been reported to be influenced by various factors such as carbon sources, nitrogen sourc...
Abstract: E-learning is being increasing viewed as an important activity in the field of distance and continuing education. Web-based courses offer obvious advantages for learners by making access to educational resource very fast, just-in-time and relevant, at any time or place. In this study, based on our previous work, we present a framework for our web-based e-learning system using the Semantic Web technology. In addition we present an approach for implementing a Semantic Web-based elear...