Natural & Applied Sciences

Natural & Applied Sciences Research Papers/Topics

THE RELEVANCE OF THE COMPUTER MACHINE

Computer is a machine that is invented and developed by mimicking the functionality of the human brains. Several human abilities are utilized in writing the programs that run this excellent device. As a result the computer could be applied to solve virtually all problems of man (except spiritual problems).My question is: "Would it not be very beneficial to be educated on how to use this problem solving device?"

GEOLOGY OF KAFIN MAIYAKI AND ITS ENVIRONS, NORTHWESTERN NIGERIA

The study area Kafin Maiyaki and its environs is a segment of sheet 103 Federal Survey Topographical Sheet 103 Ikara NW. The area is underlain by migmatite-gneiss and medium to coarse grain gneiss and has been intruded by a series of Pan African Granitoids. Geological structures observed in the area were faults, joints and veins trending mostly in the NW-SE and NE-SW indicating the effect of Pan African Orogeny. No evidence of economic mineralization has been observed but from the petrographi...

SYNTHESIS, CHARACTERIZATION AND ANTIMICROBIAL EVALUATION OF CURCUMIN-BISMUTH NANOPARTICLES

Abstract Elemental bismuth has been reported to exhibit antimicrobial activity, but it does so only at relatively high millimolar concentrations due to its limited solubility in water. However, its solubility can be increased upon chelation with other materials like curcumin thereby increasing its potential as antimicrobial agent even at much more lower concentration. In this study, a novel Bismuth nanoparticless were prepared from non-toxic curcumin as stabilizing and capping agent to elim...

Taxonomic Composition, Abundance and Distribution of Phytoplankton in Ifewara Reservoir, Southwestern Nigeria

ABSTRACT The taxonomic composition, abundance and distribution of phytoplankton in Ifewara Reservoir, Southwestern Nigeria was studied for four months (February to December, 2015). Four sampling stations (designated Stations 1-4) were established along the horizontal axis of the reservoir from inflow region to the dam site end. The stations were all sampled at the marginal sides (A and C) and open water B except for Station 1 which was only at the open water. At each station, net plankton sam...

Purification and Characterization of Lipase from Aspergillus flavus PW2961 using Magnetic Nanoparticles

________________________________(Received: 08:03:2017; Accepted: 05:04:2017) _______________________ Abstract Lipase from Aspergillus flavus was purified in a single step purification using MnFeO4 magnetic nano particles to achieve a 20.53- fold purification with specific activity of 11.29 U/mg and a 59% recovery yield. SDS-PAGE of lipase showed a single pure band with corresponding molecular weight of 35 kDa. The optimal temperature and pH for the enzyme activity were 45°C and 7.0 respe...

Application of Shooting Method and Finite Difference Method in Providing Solution to Two Boundaries Value Problems

This paper investigates the efficacy of the shooting method and finite difference method in the numerical solution of two point boundary value non linear problems. The difficulty in providing exact solutions to two point boundary value problems via analytical methods necessitated the study. The shooting method which utilizes the Runge-Kutta method as integrator provides us with a better approximation to the solution than the finite difference method which utilizes second order, central differ...

Resolution of Uncertainties in Convectional Logs Using 3D Explorer (3DEX) Data Sets: Niger-delta Example, OLU Field

The novel approach of unraveling the potential of bypassed hydrocarbon reservoir a thinly laminated geology by comparing the petrophysical parameters and computed Stock Oil Initial-in-Place (STOIIP) obtained from conventional log response to that obtainable in high resolution image data sets was carefully initiated. Archie's equation was adopted in the estimation of water saturation. The net-to-gross was estimated directly from the logs. TECHLOG 2.7 Version was used to estimate the pefrophys...

Aquifer Vulnerability Index: A Method for Groundwater Protection Studies at Uvwiamuge, Western Niger Delta, Nigeria.

Abstract One major environmental hazard causing serious social problem in oil producing communities in Niger Delta is oil spills. This is as a result of the numerous petroleum related installations. T he the aquifer via pathways along which contaminants flow from the surface to th deterioration of water quality in shallow and vulnerable aquife rs spills contaminate e aquifer causing . Electrical resistivity investigation of the SombreiroWarri Deltaic Plain deposits of the Niger Delta was carr...

FORAMINIFERA BIOZONATION OF "WELL K-27", GREATER UGHELLI DEPOBELT, NIGER DELTA BASIN, SOUTH EASTERN NIGERIA

ABSTRACT Ditch cutting samples collected from interval 2590 3300 metres in Well K-27, Greater Ughelli depobelt, Niger Delta were studied for their lithology and foraminiferal content with the aim of dating and subdivision of the sequences penetrated by the well into biozones. The samples were processed using standard foraminiferal processing methods involving sample disaggregation and washing through a 63 micron mesh sieve, drying and picking and subsequent analysis of the foraminifera and a...

Sequence stratigraphic Implication to Hydrocarbon Exploration in the Niger Delta Basin

SEQUENCE STRATIGRAPHIC IMPLICATION TO HYDROCARBON EXPLORATION IN “BETA FIELD”, NORTHERN DEPOBELT OF THE NIGER DELTA BASIN 1,2Ukpong, A. J.    and   2Anyanwu, T. C. 1. Department of Geology, Gombe State University, Gombe, Nigeria (Sabbatical), 2. Department of Geology, University of Calabar, Calabar, Nigeria ABSTRACT Seismic and checkshot data, geophysical data and biostratigraphic data extracted from ditch cutting samples, were used for the sequence stratigraphic analysis of Beta-24 we...

Isolation and Identification of Some Microbial Pathogens Associated with the External Body Surface of Periplaneta americana in Umuahia, Abia State

Aim:  This  study  was  carried  out  to  isolate  and  identify  the  microbial  pathogens  of  medical importance  on  the  external  body  surfaces  of  Periplaneta  americana  collected  from  toilet  areas, residential/hostel  areas  and  health  facilities  in  Umuahia  metropolis,  Abia  State,  south-eastern Nigeria.   Study Design: Cross sectional study.  Place  and  Duration  of  Study:  The  study  was  carried  out  in  Umuahia ...

Reverse Osmosis Technology, its Applications and Nano-Enabled Membrane

Reverse Osmosis (RO) is the finest of all membrane filtration system, it is a membrane based technology to purify water by separating the dissolved solids from feed stream resulting in permeate and reject stream for a wide range of applications in domestic as well as industrial applications. The objective of this paper is to review the concept of reverse osmosis and the current developments in the RO membrane materials which are the key determinants in the process. This review paper also ...

Phytochemical Screening and Antibacterial Activity of Spondias mombin Leaves

Phytochemical investigation was carried out on the crude ethanol extracts of the leaves of Spondias  mombin. The antibacterial activity of the ethanolic and the Chloroform leaf extract was tested  against four bacteria; Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa and Salmonella typhi using disc diffusion method. The results indicated that both extracts showed inhibitory activity against clinical isolates of the gram negative bacteria Staphylococcus aureus, P. aerugi...

Preliminary structural evaluation of an X-Field Onshore in Niger Delta using 3D seismic data

Preliminary structural evaluation of an X-Field Onshore in Niger Delta using 3D seismic data A structural evaluation of a post stack time migrated (PSTM) 3D seismic data over an X–Field in the eastern Niger Delta has been attempted. The objective of the study is to structurally evaluate the field with a view to identifying structural features such as faults, map geologic horizons and analyze reflection characteristics that might be a good lead to probable hydrocarbon accumulations. Results ...

Evaluation of Inhibitory Zone Diameter (IZD), Phytochemical Screening, Elemental Composition and Proximate Analysis of Crude Cleistopholis Patens Leaf

This purpose of this study is to determine the Inhibitory zone diameter (Izd), phytochemical screening, elemental composition and proximate analysis of crude Cleistopholis patens leaf, bark, aqueous and ethanol extracts on selected pathogenic isolates. The leaf and bark of Cleistopholis patens plants were obtained from a location in the southwestern part of Nigeria, in the tropical rainforest of Ikare Akoko, Ondo state and Ile Ife, Osun state, Nigeria. The six (6) bacterial isolates include E...


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