Natural & Applied Sciences

Natural & Applied Sciences Research Papers/Topics

APPLICATION OF NUMERICAL ANALYSIS TO ALGEBRAIC AND TRANSCENDENTAL EQUATIONS

ABSTRACT In this paper we introduce, numerical study of some iterative methods for solving non linear equations. Many iterative methods for solving algebraic and transcendental equations are presented by the different formulae. Using bisection method, false position method, secant method and the Newton’s iterative method and their results are compared. The bisection, Regular Falsi, Newton-Raphson and secant method were applied to a single variable function over the interval [0,1]. Numerical...

Identification and Characterization of Cellulase Producing Fungi.

ABSTRACT Hymenula cerealis, Neottiosporella radiata, Sphaerosporium lignatile, and Monilochaetes infuscans were isolated from soil of Botanical Garden, Obafemi Awolowo University, Ile-Ife. The soil sample was serially diluted and isolation was done using pour plate method. The organisms were then screened for cellulase production using carboxymethyl cellulase and Congo red.  The screening result showed that Hymenula cerealis, Neottiosporella radiata, and Sphaerosporium lignatile are capable ...

Performance of Ionex Map at Ilorin

Ionosphere is the region in the upper atmosphere where there are sufficient amount of electrons and ions to influence the propagation of radio wave. For radio wave propagation studies and application, a standard model (model based on data) such as IONEX map model was developed to study the ionospheric parameter i.e. the Total Electron Content. This parameter is used to quantify the level of ionization in the ionosphere. The performance of IONEX map model over Ilorin with station coordina...

PETROPHYSICAL EVALUATION AND DETERMINING THE DEPOSITIONAL ENVIRONMENT OF OBAMA FIELD SOUTH-WEST NIGER DELTA

ABSTRACTThe logs from three wells of Obama Field, offshore south-west of Niger Delta Basin were studied for the purpose of evaluating the petrophysical properties and interpreting the depositional environments. The analyses carried out involve delineation of lithologies, identification of reservoirs and fluid types, wells correlation and determination of petrophysical parameters of identified reservoirs and interpreting their environment of deposition. A suite of wire-line logs comprising gam...

THE CHEMISTRY OF CARBON BLACK

Carbon black is a generic term for a particular form of elemental carbon manufactured by vapour- phase pyrolysis or partial combustion of hydrocarbons. It is the term for an important family of products that is used principally for the reinforcement of rubber, as a black pigment and because of its electrical, conductive properties It does not occur as a natural product (IARC, 2010) and it is one of the most stable compounds (Pilusa & Muzenda, 2013).

Preliminary Investigation of the Possible Pathogenic Bacterial Contents of Some Local Non-Alcoholic Drinks

The aim of this study was to determine the safety profiles of some local non-alcoholic drinks sold within Zaria locality by isolating and characterizing the possible pathogenic bacteria found in them. For this aim, 17 samples of Zobo drink, 19 samples of Kunu zaki drink, and 15 samples of Ginger drink were analysed. Among the 51 total samples, Klebsiella pneumoniae was isolated from one Ginger drink sample; Serratia marcescens was  isolated from two Zobo drink samples and two Ginger drink s...

LEACHATE COMPOSITION OF ISALE-IJAGBA AND OKE –DIYA DUMPSITES IN SAGAMU AND THE POSSIBLE ENVIRONMENTAL IMPACT ON SURFACE AND GROUNDWATER QUALITY.

ABSTRACT When solid waste is disposed of at landfills, it undergoes a combination of physical, chemical and microbial processes. These processes help to transform the waste into various water-soluble compounds termed (leachate) and transfer the pollutants from the refuse to the percolating water, leading to contamination of surrounding groundwater and surface water. Characterisations of the leachate originating from the Isale-Ijagba and Oke-Diya dumpsites (situated in Sagamu, Ogun State, Nig...

Physico-chemical Properties of Cocoyam Flour

 ABSTRACT This work examined the physicochemical properties of cocoyam flour. Cocoyam corms were cleaned, peeled, diced, blanched, sundried, milled and sieved to obtain flour of fine particle sizes. Physical properties and chemical composition of the flour were determined in accordance with standard methods. The results of the physical properties ranged from oil absorption capacity 2.96 g/ml, water absorption capacity 3 g/ml, gelatinization temperature 68oC, least gelation capacity 0.4 g/ml,...

Ethno Medicinal Claims on The Aerial Parts of RAUVOLFIA VOMITORIA

Establish the Ethno medicinal claims on the aerial parts of Rauvolfia Vomitoria Determine the phytochemical ingredient contained in the plantInvestigate the antimicrobial activity of the plant extracts. 

Prevalence of Hepatitis B serological markers among HIV infected patients

Abstract Abstract Background: Occult hepatitis B infection (OBI) is defined as serologically undetectable hepatitis B surface antigen (HBsAg-ve), despite the presence of circulating HBV DNA (Allain, 2005). It has been documented that one of the frequent complications of HIV infection is hepatitis B co-infection and due to the common methods of transmission of these two viruses, the incidence rate of co-infection is increasing (Chen et al., 2011) Objective: To determine the prevalence of HBV s...

Assessment of Alpha and Beta Radioactivity Pollution of Main Water Supplies in Dutsinma Metropolis

ABSTRACT The gross alpha and beta radioactivity pollution of main water supplies in Dutsinma metropolis were measured using proportional gas counter. The results show that the gross alpha radioactivity in water samples is lower than the maximum contaminant level of 0.1Bq/L set by World Health Organization (WHO). The measured alpha activities have a minimum of 0.001±0.0.003 and the maximum of 0.146±0.034 Bq/L with mean of 0.029±0.002 Bq/L. The gross beta radioactivity in water samples is h...

NON ENZYMATIC SYNTHESIS OF BIOETHANOL FROM CELLULOSE IN WASTEPAPER MATERIALS.

TABLE OF CONTENT           Pages  Title Page                                                                                                 i  Certification                                                                                             ii  Dedication                                                                                     ...

Investigating The Presence Of Staphylococcus Aureus And Escherichia Coli In Dairy Products

INTRODUCTION Dairy products are various products derived from cow’s milk or that of other female mammals such as goat, sheep, yaks, horses, camel. Dairy products include yoghurt, nono (fermented cow’s milk, madara (unfermented cow’s milk, cheese, whey, condensed and evaporated milk.) (cultureforhealth, 2015). Yoghurt, nono, Madara has become so highly valued in humans diet because of their nutritional values and their culinary possibilities (George and pamplon, 2006) Yoghurt is ma...

OPEN SOURCE SOFTWARE

Open-Source software (OSS) is computer software with its source code made available with a license in which the copyright holder provides the rights to study, change, and distribute the software to anyone and for any purpose. Open-source software may be developed in a collaborative public manner. Open-source software is the most prominent example of open-source development and often compared to (technically defined) user-generated content or (legally defined) open-content movements. The open-...


6826 - 6840 Of 8090 Results