Natural & Applied Sciences

Natural & Applied Sciences Research Papers/Topics

BIOCONVERSION OF TUNA PROCESSING WASTE INTO FISH SAUCE

ABSTRACT Fish sauce is a fermented fish product. It is a liquid extract of fish tissues produced by fermenting fish and/or fish processing by-products, sometimes mixed with a carbohydrate source, under a salt-saturated condition. It is typical of the oriental countries where it is consumed as a condiment. Analysis of a typical fish sauce suggests varying degree of hydrolysis of the proteins and other macromolecules of the fish, which are typical of microbial and enzymatic actions, although th...

PHYSICOCHEMICAL PROPERTIES OF STARCHES OF SOME TROPICAL TUBERS

ABSTRACT The starches of corms and cormels of red and white cocoyam (Colocasia esculenta) varieties, cassava (Manihot esculenta), sweet potato (Ipomea batata), bitter yam (Dioscorea dumentorum) and water yam (Dioscorea alata) were extracted. Their proximate compositions, physicochemical properties, mineral compositions and antinutrient contents were analyzed. The results of the proximate analysis (pWCCM (corms of white cocoyam)>WYAM>SPOTA>WCCL >RCCL (cormels of red cocoyam)>CASS. The darkest ...

PHYSICOCHEMICAL CHARACTERIZATION OF NATIVE, MODIFIED AND NANO STARCHES OF SELECTED TUBERS AND SEEDS

ABSTRACT The native starches of white and red cocoyam (Colocasia esculenta), white yam (Dioscorea rotundata) and yellow yam (Dioscorea cayenensis), and seeds of pigeon pea (Cajanus cajan), lima bean (Phaseolus lunatus) and jack bean (Canavalia ensiformis) were isolated and modified to obtain their hydroxypropyl and ozone-oxidized derivatives. The nanocrystals of the starches were prepared by mild acid hydrolysis at 40oC with continuous stirring for five (5) days. The native starches were eval...

ASSESSMENT OF HEAVY METALS IN NIGERIAN VEGETABLES AND SOILS IN OWO AND EDO AXES USING X-RAY FLUORESCENCE (XRF) TECHNIQUE

ABSTRACT The soils and leaves of fluted pumpkin (Telfairia occidentalis), African spinach, "Green" (Amaranthus hybridus) and water leaf (Talinum triangulare) were collected as randomly composite samples from four (4) different study locations of two (2) each from Owo Local Government Area and Etsako-West Local Government Area. The samples were examined for heavy metal concentrations, using X-ray fluorescence (XRF) technique. Chromium (Cr), zinc (Zn), manganese (Mn), iron (Fe), titanium (Ti), ...

QUANTITATIVE DETERMINATION OF TRACE METALS AND SULPHUR CONTENT IN NIGERIAN PETROLEUM PRODUCTS USING AAS AND GRAVIMETRIC ANALYSIS TECHNIQUE

Abstract Eighteen trace heavy metals were quantitatively analyzed using atomic absorption spectroscopy; five samples of petroleum products were collected from Kaduna Refining and Petrochemical Company. Three different preparation methods were adopted for the determination of trace and heavy metals present in the various petroleum products viz: Direct sample aspiration into the flame after solvent dilution, Total acid (wet) digestion of the sample, Ashing of the sample and dissolution wi...

A STOCHASTIC ANALYSIS OF INVESTMENT PROSPECTS IN WEST AFRICA: A CASE OF GHANA AND NIGERIA

ABSTRACT The main aim of this study is to analyse investment prospect in Ghana and Nigeria using rate of inflation, 90-day Treasury bill rate (interest rate) and local currency per US dollar exchange rate. The dataset span from January, 2003 to June, 2014. Stochastic time series analyses (ARIMA and ARCH-type) models were employed in the forecasting of the macroeconomic variables and simple investment accumulation was also employed in the accumulation of investment returns. The results reveale...

DESIGN AND IMPLEMENTATION OF AUTOMATED SOFTWARE FOR THE PUSH AND PULL METHOD OF SOLVING LINEAR PROGRAMMING PROBLEMS

ABSTRACT This research work focused on solving Linear Programming Problems with the objective of identifying and reducing the computational complexities or complications involved in solving these problems. In this work, we presented two algorithms; the Standard Simplex method and a newer solution algorithm called Push and Push algorithm. The Simplex method has been one of the oldest and the best methods for efficiently solving Linear Programming (LP) problems until recently. In this work, a m...

MARKOV CHAIN MODELING OF HIV, TUBERCULOSIS AND HEPATITIS-B TRANSMISSION: A STUDY OF A REGIONAL HOSPITAL IN GHANA

ABSTRACT This study demonstrated the application of Markov S-I-R model and other statistical methods in exploring HIV, Tuberculosis (TB) and Hepatitis B (HB)disease outcomes using Ghanaian data. Secondary datasets from cohort studies were collected from records from the Ashanti Regional Hospital. Relevant disease metrics as well as transition probabilities were generalized for each disease. Method of Competing risks was used to further estimate the crude, partial crude and net probabilities o...

DESIGN AND IMPLEMENTATION OF AN ONLINE BUS TICKETING SYSTEM (A case study of Sokoto state transport authority)

ABSTRACT Traditionally, bus ticket purchase has been over the counter in bus terminals, however, today it has evolved with the rapid expansion of e-commerce. This project addresses the study and development of an Online Bus Ticketing System web portal that enable customers (passengers) and the staff to make an online bus ticket sale/purchase, ticket cancel, ticket postponement, driver rating, generating of reports and etc. which also act as an operation tool for bus ticketing companies to ope...

PHYSICAL , CHEMICAL AND PHYSIOLOGICAL RESPONSES OF PINEAPPLE TO GLAZING AFTER HARVEST

ABSTRACT The post harvest management of pineapple quality is a problem that many Ghanaian pineapple exporters are grappling with. Importers pay premium only on top quality fruits that satisfy market and consumer expectation. An effective Quality Management Approach (QMA) which takes into consideration market demands and consumer expectation would be the key to making Ghanaian exports competitive on the world pineapple trade. In this study, glazing or surface coating of pineapple was employed ...

GUINEA WORM: SOCIO-CULTURAL STUDIES, MORPHOMETRY, HISTOMORPHOLOGY, VECTOR SPECIES AND DNA PROBE FOR DRACUNCULUS SPECIES.

Abstract Dracunculiasis still remains as a disease o f public health importance in Ghana, especially in the Northern, Volta and Brong-Ahafo Regions, despite over a decade o f an Eradication Programme. In this study, attempts have been made to determine the problems associated with the eradication o f Guinea worm in the Northern Region o f Ghana, and suggestions provided to overcome them. Also investigated were the longitudinal anatomical variation of the parasite, the vector species and ...

RATIO-TYPE ESTIMATORS IN STRATIFIED RANDOM SAMPLING USING AUXILIARY ATTRIBUTE

ABSTRACT A problem of the ratio-type estimators in Stratified Sampling is the use of non-attribute auxiliary information. In this study, some ratio-type estimators in stratified random sampling using attribute as auxiliary information are proposed. The sample mean of study variable and proportion of auxiliary attribute were transformed linearly and using auxiliary parameters respectively. Biases and mean square errors (MSE) for these estimators were derived. The MSE of these estimators were c...

APPROXIMATE LOCATIONS OF SOME LOCAL GOVERNMENT HEADQUARTERS IN KEBBI STATE USING MULTIDIMENSIONAL SCALING TECHNIQUE

ABSTRACT Multidimensional scaling is a technique used to picture, visualize or locate objects in a map or Shepard diagram, Buja et ai, (2004). In this dissertation, the multidimensional scaling method has been applied to visualize approximate Iodations of eleven sampled local governments in Kebbi State. The symmetric distance matrix 'D' has been processed from an atlas of Nigeria by Eunice, (1979). The data has been transformed into inner-product matrix B by double centering, using Mardi...

ANTI-TRYPANOSOMAL ACTIVITY OF N-HEXANE AND DICHLOROMETHANE EXTRACTS OF VITELLARIA PARADOXA LEAVES ON TRYPANOSOMA BRUCEI BRUCEI INFECTED MICE

African trypanosomosis is a vector-borne disease that is caused by a flagellated protozoon of the genus Trypanosoma. Large populations of human and domestic animals are at risk of infections with trypanosomes in vast areas of sub-Saharan Africa where the disease is endemic. Human infections with trypanosomes are referred to as Human African Trypanosomosis (HAT) while animal infections are known as African Animal Trypanosomosis (AAT). These infections are more prevalent in the rural areas (Ato...

AN AUTOMOBILE FAULT DETECTION SYSTEM

ABSTRACT This work presents an intelligent system for fault diagnosis for automobiles. The main goal of this work is to use the vast knowledge previously acquired from human experts by system experts, to visualize, localize and fix a fault in a car. The project is motivated by the need to guide car owners and motor mechanics in the maintenance and troubleshooting of motor problems without having to resort to assumptions. A rule-based artificial intelligence (AI) technique was used to establ...


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