Abstract Suppose that E is a real Banach space .which is both uniformly convex and q-uniformly smooth and that T is a Lipschit;: pseudocontractive self-mapping of a closed convex and bounded subset K of E. Suppose F(T) dcnotes the set of fixed points of T and U denot :s the sunny nonexpansive retraction of K onto F(T) and w any point of K, it is proved that the sequence {xn),"Lo generated from an arbitrary xo E K bv (where I denotes the identity operator on E and {a,),"==, and {Pn),"=o are re...
ABSTRACT The synthesis and characterization of five new linear diazaphenoxazine compounds is reported. The key intermediate, 3-chloro-1-9-diazaphenoxazine, was prepared via a base catalyzed reaction of 2-amino-3-hydroxypyridine with 2,3,5-trichloropyridine in aqueous 1, 4-dioxane. Five 3-amino derivatives of the key intermediate were prepared via Buchwald – Hartwigamination coupling reaction between 3-chloro-1,9-diazaphenoxazine and various heterocyclic amines, under the catalytic influence...
CONTENTS .- - CERTIFICATION: DEDICATION : ABSTRACT ACKNOWLEDGEMENT CHAPTER ONE: INTRODUCTION : ' 1.1 Motivation behind growth of thin Films 1.2 What are thin films .I "3 Uses of thin films 1.4 Deposition techniques : 1.5 Reasons for the technique used in experimentation 10 - CHAPTER TWO : BASIC SEMICONDUCTOR PHYSICS 12 - 39 2.1 What are SemicondLlcrors 12 2.2 Examples of Semiconductors 14 2 '3 Types of Semiconductors 16 2.4 Semiconductor Statistics 20 2 -41 Probability of occupation of allowe...
ABSTRACT Tandem amidation catalyzed synthesis of linear diazaphenoxazine carboxamide derivatives is reported. This was achieved by the reaction of 2-amino-3-hydroxypyridine and 2,3,5-trichloropyridine in aqueous basic medium which gave 3-chloro-1,9-diazaphenoxazine as white solid crystals. 3-Chloro-1,9-diazaphenoxazine was then subjected to Buchwald-Hartwig amidation coupling reaction with various amides namely formamide, phthalamide, 4- nitrobenzamide, benzamide and acetamide via water promo...
ABSTRACT Synthesis of twelve O-arylated diazabenzo[a]phenoxazine-5-one and its carbocyclic analogue is reported in 46 - 99 % yields. The intermediates were prepared by anhydrous base catalyzed reaction of 2,3-dichloro-1,4- naphthoquinone with 4,5-diamino-6-hydroxyl-2-mercaptopyrimidine and 2- aminophenol. The O-arylation process occurred smoothly in non-polar solvent, toluene with the inexpensive base, K2PO4 at 110o C. The intermediates were combined with a variety of electron-deficient, elec...
ABSTRACT Resistivity surveys were carried out at seven stations within the university of Nigeria, Nsukka and its environs. The objective was to determine areas suitable for the drilling of boreholes for groudhvater. The results generated from this survey were interpreted in terms of the number of subsurface layers, usurer thickness, depth to uquifer and, probable lithology$orrnations. However, lithologic interpretations were carried out using exist ring borehole data from the area. A BEM Terr...
ABSTRACT The study sought to assess the solid waste disposal pattern of sellers in Mile One Market Port Harcourt in order to: identify the solid waste disposal habits of sellers, determine the frequency of clearing dumpsters from the market, determine accessibilityof waste dumpsters to market sellers and ascertain if the pattern of waste disposal significantly vary from different section of the markets.Data wereobtained throughinterviews, questionnaires and on the spot observation. A total of...
ABSTRACT The indiscriminate dumping of urban wastes in surface water bodies in urban and semiurban areas in Nigeria has become a growing menace to humans and natural ecosystem. This study tried to access the effect of urban waste on Mmiriocha river quality located in Abakpa, Enugu state. Water samples were collected at four different points considering various human activities that generate and discharge wastes into the river such as abattoir, raw sewage from homes, open dumps along the river...
Surface water quality was accessed at Mbagule-Ipav, Gboko LGA Benue state, Nigeria, a community dominant with agricultural activities. Investigation showed that the community has one stream which serves as the only source of water to the community for domestic and agricultural purposes. This research was to ensure the use of clean and safe drinking water for the public health protection. On this regard, a physicochemical and Microbial analysis of the surface water was carried out for s...
ABSTRACT The study focused on improving crime analysis and mapping in Enugu urban using Geographical information system (GIS ) and spatial database of crime which helps in the determination of hotspots in Enugu Urban and also it identifies the challenges facing police departments that seek to implement computerized crime mapping systems. The analysis of the existing information system from the Enugu urban Police Force showed that the current system was manual and not sufficient for crime anal...
ABSTRACT A study of the semiannual variation of the Monthly mean Dst-related disturbance in H and Z components of the geomagnetic field has been carried out. Magnetograms from fifteen (15) geomagnetic stations in the high- mid- and low latitudes, and which includes three of the stations used in computing the Dst index have been analyzed. Sixty-one years data (1950-2010) was utilized. The H-component (Hdiff) and Z-component (Zdiff) of the Dst-related disturbance were computed by removing the s...
ABSTRACT Conferences are viewed as one of the greatest assets of any organisation when it is viewed as an organised thinking environment. It is indispensable to any society and as such calls for an avenue or focal point where people can gather to express their ideas and views. Its need by society’s, individuals and organisations cannot be underestimated as it gives room for formal and informal meeting. Its origin can be traced down to the use of open spaces, courtyards, village squares and...
ABSTRACT Most of the fish marketed throughout Nigeria are in either smoked or dried form. The technological requirement for other forms of preservation like chilling and freezing cannot be afforded by the small scale fisher men. Considerable quantities of fish processed for distant consumer markets are lost at handling, processing, storage and marketing stages. Significant losses occur through infestation by mites, insects, fungal infection and fragmentation during transportation. However, wi...
A good understanding (If the structure and mode of evolution of the continental margin of Nigeria is crucial for many reasons. In terms of hydrocarbon accumulation, the area is of high economic importance as demonstrated by the high level of exploration activities that has been maintained in the area especially in the last three decades. The fishing industry would also benefit from a proper understanding of the bathymetry and morphology of the margin. Nigeria's scientific institutions have ye...
ABSTRACT The unplanned, uncontrolled, chaotic city growths, population explosion, pollution, erosion, misuse of natural and man-made resources are posing serious challenges to environment. Hence, the search for quality landscapes urban and rural environment and proper use of land and its resources as a crucial developmental issues calling for maximum attention. However, most property owners are often unaware of how healthy attractive landscaping can contribute to their total property aestheti...