ABSTRACT This study reports a new method of pre-concentrating Zn2+, Fe2+, Mn2+, Mo6+ and I- ions present in food stuffs using modified bio-sorbents. These elements are in low levels in many food stuffs commonly consumed and some are way below the recommended daily intake (RDI). Examples of mitigating such situations include the addition of iodine to table salt in minute portions. However, table salt in foods increases sodium levels causing problems to consumers with high blood pressure...
ABSTRACT Computational and theoretical advances have progressed sufficiently so that it is now possible to calculate reaction rates directly from ab initio theory without the intervening use of any analytical method. The rate constants of chemical reactions are calculated using information about the structures, energies, and Vibrational frequencies of reactants and transition states. Computer algorithms help in determining the structures of the molecules and in understanding how molecules re...
ABSTRACT Thaumatococcus daniellii and Musa accuminata are leaves used for wrapping foods and these herbs have some medicinal value. The affordability, preservation, usage techniques, and seasonal scarcity of the leaves make it difficult for people to use them frequently but they are preferred over plastic bags and aluminum foil in terms of wrapping edible foods like beans pudding (moi-moi), agidi, etc and fresh foods like uncooked meat, vegetables etc. This research work involved phytochem...
ABSTRACT The reaction of α–toluenesulphonyl chloride with various readily available amino acids in basic medium afforded α–toluenesulphonamides (1a-k) which had their acid function subsequently amidated with diethyl amine to obtain their corresponding new N,Ndiethylalkanamido substituted α–toluenesulphonamide derivatives (2a-k). The electrophilic addition of p-toluenesulphonyl chloride with various amino acids' nitrogen gave p-tolylsulphonamide derivatives (4a-k) which upon further ...
ABSTRACT This study tackles two concerns of knowledge engineers in designing and developing a fuzzy rule-based expert system (FES). First is to acquire a knowledge-base that emulates human perception of application domain concept in order to avoid sharp boundary problems. Second is the need for modelling a comprehensive fuzzy rulebased expert system which eliminates redundant rules in order to solve the problem of rule-base unwieldiness and provide for knowledge-base instant updates. This th...
ABSTRACT A number of research efforts had been devoted to forecasting stock price based on technical indicators which rely purely on historical stock price data. However, the performances of such technical indicators have not always satisfactory. The fact is, there are other influential factors that can affect the direction of stock market which form the basis of market experts’ opinion such as interest rate, inflation rate, foreign exchange rate, business sector, management caliber, inves...
ABSTRACT The major aim of this work is to develop an efficient and effective k-means algorithm to cluster malaria microarray data to enable the extraction of a functional relationship of genes for malaria treatment discovery. However, traditional k-means and most k-means variants are still computationally expensive for large datasets such as microarray data, which have large datasets with a large dimension size d. Huge data is generated and biologists have the challenge of extracting useful ...
Abstract The danger of aerosols loading in the lower atmosphere of West Africa is a source of concern both at the short or long term. Currently, there are about 45% available data sets over West Africa; hence, it is difficult to ascertain the level of threat that life forms in this region would be exposed to in the nearest future. In this thesis, it was proposed that the current challenges bedevilling the functionality of measuring devices are more of systemic error than design error. The ai...
ABSTRACT Wireless Sensor Networks (WSNs) usually consist of sensor nodes and gateways with limited resources such as memory, power and size. As a result, WSNs require bandwidth-efficient, memory-efficient and energy-efficient application protocols for data transmission. If data transmission at the application layer is not efficient, more re-transmissions will occur across the network which consumes limited resources of the WSN. Therefore a careful and extensive performance evaluation is need...
ABSTRACT In this dissertation, it is considered, the investigation of the Fourier Transform and the fundamental solutions of mechanical models with internal body forces. Although, there are many models, only two models are considered on the review, namely heat conduction and linear isotropic elasticity. For the investigation, the statement of the problem bases only on the linear isotropic elasticity problem. In working with calculations, the Fourier Transform, Inverse Fourier Transform, Resi...
ABSTRACT This study uses advanced communications and computing technologies to support health care delivery and education. The automated e-Health-based system was designed to eliminate clumsy and tedious treatment procedures associated with manual treatment processes prevalent in care centres, especially in the developing countries. The operations support functionalities of the system are provided within a formal framework to eliminate system errors, improve dependability and enhance its usa...
ABSTRACT In this article, a time truncated life test based on two-stage group acceptance sampling plan is proposed for lifetime of an item follows odd generalized exponential log-logistic distribution (OGELLD). The ability about the lot acceptance can be made in the first or second stage according to the number of failures from each group. The optimal parameters for the proposed plan are determined such that both producer’s as well as consumer’s risks are contented simultaneously for the...
ABSTRACT : H-bonds between neutral tyrosine and arginine in nonpolar environments are modeled by small-molecule phenol/guanidine complexes. From the temperature and concentration dependence of UV spectra, a value of ΔH° = −74 ± 4 kJ mol−1 is deduced for the formation of H-bonded parasol/dodecylguanidine in hexane. ΔE = −71 kJ mol−1 is computed with density functional theory (in vacuo). In dimethyl sulfoxide or crystals, (p-phenyl)alkylguanidines form head-to-tail homodimers with t...
Abstract Some of the physiochemical properties of Azadirachta indica Gum (Neem) Gum were studied. They include: moisture, ash, nitrogen hence the protein, pH value and specific optical rotation. The results show that: moisture content is 13.07%, ash content is 3.13%, Nitrogen content is 4.9%, protein is 32%, specific optical rotation is –65.5, and pH is 6.5. The number molecular weight of the sample was estimated using osmotic pressure measurement and found to be 4.0×106 g/mole. Thermodyn...
ABSTRACT The two natron samples were collected from different location of different environments .The samples were analysed qualitatively and quantitatively by standard methods of analysis to determine the chemical composition and the concentration of each component . The effect of natron on chemical structure of Toombak was studied. The analytical techniques used in this study are:- Flame Emission spectroscopy which was used to determine sodium and potassium ions, content and the results wa...