ABSTRACT Co111positc soil samples were collected rnmlomly within Gwagwul8da, Kujc ami Kw;di 1 t.:n Councils or the Federal Capit:d Territory (FCT), /uja. The sarnpks were mwlyscd lr pH. percentage organic mutter, exchat1gcablc bases, cxchallgcahlc acidity. c!Tective cntion cxclwngc cnpacity (ICEC), perccnt;1gc base saluratioll, available lllclal clclllclltS, the toltd levels or COIICl'lltratiollS of the lllCtal clclllCiltS. chcrnical IJ·actiOIIS of 11lallgallCSC, LillC dctl:ity, te...
ABSTRACT Most experimental situations call for standard designs that can be constructed with many statistical software packages. In some situations, however, standard designs are not appropriate or practicable. Computer-aided designs are experimental designs that are generated based on a particular optimality criterion and are generally optimal only for a specified model. In this work designs are generated for non-standard multifactor experiment using D-optimality criterion. The experiment in...
ABSTRACT Several non-linear models have been proposed by various authors for the analysis of growth data. I n this thesis, three models, viz, Gompertz, Exponential and Polynomial models were used to analyze some forestry data, namely, a tree specie known as Tectona Grandis, collected in the Guinea savanna zone of Nigeria. The three models were compared and using the criteria of low mean square error and high coefficient of determination, it was found that the Gompertz model fits the data best...
ABSTRACT Complexes of 4 - Cyanobenzaldehydecylohexyl acetic acid hydrazone ( 4-CBAH) with M(II) sulphates and acetates have been synthesized (M=Ni, Cu, Co and Zn). The complexes were characterized by elemental analyses, conductance, infrared and electronic spectral studies . . The sulphate ions are in the outer coordination sphere, so also the acetate 10ns. The electronic spectral studies of the isolated complexes indicate an octahedral coordination for Ni2+ and Co2+ complexes while Cu2 + com...
ABSTRACT Nine pesticide residues were detected in soil and water samples from the Waanpu Dam in the Bimbilla District of Ghana at varying mean concentrations using Gas Chromatography. The pesticide residues detected in the soil and water samples were chlorpyrifos, beta-endosulfan, cypermethrin, aldrin, heptachlor, beta-BHC, heptachlor-epoxide, dieldrin, and methoxychlor. The concentration of beta-endosulfan was the highest among all the pesticides detected. It ranged from 0.001 – 0.070 µg...
ABSTRACT Quaternary ammonium compound was synthesized from epoxy and fatty amine reaction. Fourier Transform Infrared(FTIR) spectrometric analysis of the starting materials, and the final product(N-benzyl-N,N-dioctyl-2-hydroxy-3 phenoxypropylammonium chloride) were conducted, and results showed a disappearance of sharp N-H peak of 2o amine, and appearance of broad O-H peak of alcohol in the spectrum of the final product. Mass spectrometric(MS)analysis of the final product was also conducted, ...
ABSTRACT This dissertation presents a systematic and critical study of the fundamenta.lli of soft set theory which includes soft set operations, soft set relations and functions, soft matrices and their properties. In course of studying operations on soft sets, the complementation operation is strengthened, some new results on distributive and absorption properties with respect to various soft set operations are obtained,and soft set operations and their corresponding soft matrix operations a...
ABSTRACT Yersinia enterocolitica and Yersinia pseudotuberculosis are important food and water borne pathogens that has recently emerged world wide. This study was aimed at characterizing the prevalence of Yersinia enterocolitica and Yersinia pseudotuberculosis in human and selected animal populations in Jos and its environment. Three thousand stool samples from human and selected animal species from 5 different locations in Jos and its environs were surveyed over a period of three years. Huma...
ABSTRACT Valerohydroxamic and Isovalerohydroxamic acids were synthesised and recrystallised from ethylacetate. They were characterised by melting point, pka and spectral (IR NMR) studies. Their melting points are 77.78°C and 76.77°C for valerohydroxamic acid and isovalerohydroxamic acid respectively and their pka values at 0.1mol dm-3 at 28°C are 9.50+0.01 and 9.51+0.01 for valerohydroxamic acid and isovalerohydroxamic acid respectively. The IR and NMR (1H and 13C) for both valerohydroxami...
ABSTRACT Studies were carried out on the distribution, characterization, pathogenicity and antibiotic susceptibility of Listeria monocytogenes in Six Local Government Areas of Plateau State, Nigeria. A total of One hundred and fifty (150) experimental samples were taken from each test Local Government Area. The isolation was carried out with the aid of cold enrichment, selective broth and selective Listeria agar. The experimental samples examined included: cow, goat, poultry, rabbit and sheep...
ABSTRACT Complexes of Aluminium with some model bioligands, were prepared and characterized by elemental analysis, melting point, conductivity, solubility and infra-red spectroscopic studies. The complexes are soluble in water and some organic solvents such as chloroform, ethanol and methanol. The melting point ranges from 258°C - 282°C for complexes with Al Cl3, and 8Ql C - 95 C, for complexes with AlNH4(S04) 2 .12H2 0. Conductivity studies reveals that the prepared · complexes are non-el...
ABSTRACT This research work is aimed al studying the impact of health sector reforms on life expectancy in Nigeria using a secondary source of data ranging.from 1980 to 2014 obtainedfi-om the Central Bank Statistical Bulletin and World Bank indicator. Ordinwy least square of multiple regression models was used to establish the relationship betvveen dependent variable and independent variables. The data was analyzed using Eviews 9. 0. The finding revealed that out of the three unit root test c...
ABSTRACT This study is concerned with the female enrolment at the junior secondary school levels in Nigeria. In writing th is project, the approach has been to determine the trend in female enrolment at the junior secondary school level by the geo - political zones. Th i s research work is organized into five chapters. The first chapter deals with the introduct ion of the study. In this chapter, the background informat ion is provided, object ive of the study is outlined and the significance ...
Abstract ln this work, the researchers consider the concept of Information Security by the application of firewall and encryption techniques. Also, the problem of explicitly exposing infonnation in transit is discussed. We developed several algorithms. Among the algorithms are those of random sequence and non-arithmetic sequence using modified ' generators for the problem to secure information that may pass through intermediate computers l inked in the Internet. Some of these algorithms emplo...
ABSTRACT The recently developed Adjusted Ridge Estimator (ARE) for handling multicollinearity problem in Linear Regression model does not require the use of the biasing or ridge parameter, K, unlike the Ridge Regression Estimators (RRE) rather i t requires a diagonalization of the correlation vector of the explanatory variables and the dependent variable being raised to a power of half In this research, the effects of other powers on the Adjusted Ridge Regression Estimator were investiga...