Natural & Applied Sciences

Natural & Applied Sciences Research Papers/Topics

Fractional Mechanical Oscillator

TABLE OF CONTENTS Title Page i Certificate of Approval ii Dedication iii Acknowledgment iv Abstract v Table of contents vi 1. FRACTIONAL ORDER CALCULUS 2. FUNCTIONS OF FRACTIONAL CALCULUS 2.1 The Gamma function 3 2.2 The Beta Function 5 2.3 The Mittag-Leffler Function 5 2.4 Laplace Transform 7 2.5 The Convolution Theorem 9 2.6 Riemann-Liouville Fractional integral 10 2.7 Riemann-Liouville Fractional derivative 13 2.8 The Caputo’s Fractional Derivative 14 2.9 Laplace Transform of Fractional ...

On Equal Predictive Ability and Parallelism of Self-Exciting Threshold Autoregressive Model

Abstract Several authors have developed statistical procedures for testing whether two models are similar. In this work, we not only present the notion of equivalence but also extend this to a measure of predictive ability of a time series following a stationary self-exciting threshold autoregressive (SETAR) process. A proposition and a lemma were used to join the structure of the predictability measure to the coefficients and sample autocorrelation of the SETAR process. Illustrative examples...

Synthesis, Characterization and Solvent Extraction Studies of 3,5-Bis[(2-Hydroxybenzylidene)-Amino]-Benzoic Acid and Its Co(Ii) and Ni(Ii) Complexes

ABSTRACT 3,5-Bis[(2-hydroxy-benzylidene)-amino]-benzoic acid (H2B) and its cobalt(II) and nickel(II) complexes were synthesized and characterized via: electronic, IR, 1 H NMR and 13C NMR. Job’s continuous variation method was used to determine the mole ratio for both metal complexes. Solvent extraction studies were carried out on H2B in 5% DMF with its cobalt(II) and nickel(II) complexes using CHCl3 as organic solvent; with variable condition effects of equilibrium time, buffer pH, mineral ...

Evaluation of the Antinociceptive and Anxiolytic-Like Activities of Leaf Extract and Fraction of Phyllanthus Muellerianus Kuntze

ABSTRACT The anxiolytic and antinociceptive properties of the leaf extract and fraction of Phyllanthus muellerianus Kuntze (Phyllanthaceae) were investigated.The extract (MME; 500.18 g; 10%w/w), obtained by cold maceration in 1:1 mixture of methylene chloride: methanol for 48 h, was fractionationed in a silica gel column which yielded the ethyl acetate fraction (EF; 199.2 g; 39.83% w/w). The extract and fraction were subjected to phytochemical analysis. Acute toxicity of MME was determined in...

Investigation of Magnetic Anomalies of Ubiaja and Illushi Areas in Northern Anambra Basin Using Aeromagnetic Data

ABSTRACT The aeromagnetic data of Ubiaja and illushi area that fall within latitude to and longitude to were interpreted qualitatively and quantitatively. The qualitative interpretation revealed that the area is intensely faulted with major anomalies (faults) trending in the northeast and southwest directions. Standard Euler deconvolution, source parameter imaging (SPI), spectral analysis and modelling (forward and inverse) methods were employed in the quantitative interpretation aimed at det...

Synthesis and Characterization of Zinc Oxide Nanowire

ABSTRACT Zinc Oxide (ZnO) nanowires with hexagonal structure were successfully synthesized by chemical bath deposition technique. The obtained nanowires were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), energy dispersive X-ray analysis (EDX) and spectrophotometer. The SEM micrographs revealed the morphology of ZnO nanowires with diameter between 170.3 and 481nm and showed that the pH of the bath solution, 8.1 is the optimized value to form ZnO nanowires with h...

Physico-Technical and Tableting Properties of Grades of Microcrystalline Cellulose Derived from Sorghum and Andropogon Plants

CONTENTS Page Acknowledgement ........................................................................................................... iv Abstract ................................................................................................................................. vi List of Tables .................................................................................................................... xiv List of Figures .................................................................

Economic Analysis of GSM Provision in Nigeria

TABLE OF CONTENT Chaptcr One: Introduction 1.1 Inrruduction .............. ............................................................................................................ I 1.2 Problem Definition ......................................................................................................... I 1.3 Aims and Ohjectivcs ..................... .................................................................................... 2 1.4 Significance of Study.+ ......................

A Survey of Industrial Pollution in Anambra State, An Assessment of Water Quality Parameters of Rivers Dodo, Oji and Ebenebe Lake

ABSTRACT A survey of industrial pollution in Anambra state WFS carried out between February A990 and June 1997, The survey showed that Idemili, Onitsha and Nnewi Local Government Areas h3ve the greatest concentration of industries* Some of these industries.: discharqe their wastes into the environment with very little or no tre3tment. ~histochemical characteristics of rivers godo, Oji and Ebenebe Lake were determined, The concentrations of some water-quality-parameters vi7, dissolved oxygen (...

Design and Implementation of a Computerised Employee Profile Management Information System: A Case of Ministry of Education and Vocational Training, Zanzibar.

TABLE OF CONTENTS DECLARATION APPROVAL DEDICATION TABLE OF CONTENTS v CHAPTER ONE 1 INTRODUCTION 1 1.0 Introduction 1 1.1 Background of the study i 1.2 Problem statement 2 1.3 Purpose 2 1.3.1 Objectives 2 1.4 Scope 2 1.5 Significance 3 1.6 Conceptual framework 3 1.7 Theoretical framework 4 CHAPTER TWO 5 LITERATURE REVIEW 5 2.0 Introduction 5 2.1 Information system 5 2.2 Role of information systems in an organization 5 2.3 Management information system 6 2.4 Human resources management informat...

Environmental Effects of Mining On Local Communities in Kitwe and Mufulira in Copperbelt Province, Zambia

ABSTRACT With the focus of the mining companies remaining on profit making, environmental pollution on the surrounding communities is what has characterized mining in Zambia. It is for this reason that study aimed at determining the environmental effects of mining on local communities in the Copperbelt province of Zambia. The study was guided by three objectives which were translated into three research questions; examine the methods of mining, establish the environmental effects of mining on...

Evaluating the Perception of E-Learners on the Efficiency and Reliability of MU ELearning Platform

ABSTRACT Kampala International University (KIU) has recently joined the league of institutions offering online education to learner. In an organizational setting, whenever a new technology is deployed, it is necessary to evaluate its success so as to understand if it’s been embraced by the users. It is therefore, necessary to evaluate the perception of c-learners from the “quality” point of view as they continue to use the platform for their learning. The aim of this study is to evaluat...

Procurement Policies and Compliance of Local Government in Central Equatoria State, Juba, South Sudan

ABSTRACT The study on “Procurement policies and Compliance of Local Government” was conducted in Central Equatoria State, Juba, South Sudan. The study was guided by three specific objectives: i) to determine the level of Local Government compliance to procurement policies in Central Equatoria State; ii) to examine whether the procurement policies has helped to improved the quality of procurement outcomes of Local Government in Central Equatoria State; and iii) to find out if there is rela...

A Secure Cloud-Based Academic Enterprise Resources Planning (Caerp) Model for Higher Institutions “A Case Study of Kampala International University, Uganda”

ABSTRACT Academic Enterprise Resource Planning (ERP) systems are meant to integrate the separate activities, processes, and functions within a higher institution to help streamline the process and to provide real-time, on-demand information needs. The volume of data produced by academic institutions grows every day. Due to the increasing numbers of staff, students, departments, and programs, this continuous growth requires continuous scaling and improvement of the academic ERP system. Therefo...

Assessment of Levels of Heavy Metals in Water and Colloid Samples from River Oyun

Heavy metals have been a defining parameter concerning water quality. They have constituted a major degree in pollutants levels in the environment. The study was designed to investigate the comparative levels of heavy metals in colloidal and water samples in relation to the activities on the River Oyun and the activities around the sampling location. The samples were analyzed for six metals using Atomic Absorption Spectrophotometry. The results obtained showed that the concentrations of ...


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