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We re-examined the phenomenon of rotational instability in radio pulsars on decadal timescales using a sample of 315 radio pulsars whose spin-rates [rotation period (P) and spin-down rate ( P) ] have been measured on, at least two different epochs. The first stage of our analysis involves a direct comparison of the measured values of P... Continue Reading

There are several obvious observable evolutionary evidence among all the population of known pulsars, but a consistent description of this evolutionary trend is generally lacking in the literature. In this study, we provide a consistent interpretation of this evolutionary effect, on the ground that the exchange of moment of inertia with... Continue Reading

The aim of this work is to examine the variations in meteorological parameters (Temperature, Atmospheric pressure, and Relative humidity)on the surface radio refractivity, N, in Lapai town, Niger state of Nigeria, with focus on the wet and dry seasons. Lapai town, being the study area, is located within latitude 9º 02ʺ N and longitude... Continue Reading

Nowadays, ZnO is considered as the most important chemical compounds due their distinctive properties owing to its wide band gab and large exciton binding energy. It is well known that the structural and the optical properties of ZnO differ by different methods of preparation. Therefore, in this work, ZnO power was prepared by two... Continue Reading

Exosmosis and endosmosis verification using white raw eggs have been carried out. Two beakers of dilute hydrochloric (HCl) acid solution were prepared. Two white eggs were placed differently into beakers labelled Beaker A and B respectively containing dilute hydrochloric (HCl) solution and left for five hours. Beaker A (containing... Continue Reading

The aeromagnetic data of Ubiaja and illushi area that fall within latitude to and longitude to were interpreted qualitatively and quantitatively. The qualitative interpretation revealed that the area is intensely faulted with major anomalies (faults) trending in the northeast and southwest directions. Standard Euler deconvolution, source... Continue Reading

  Aeromagnetic data over Abakaliki area of the lower Benue trough of Nigeria was interpreted qualitatively and quantitatively using Oasis montaj software (version: 6.4.2 H.J).The interpretation unveiled basic intrusive bodies like dyke, lacolyte and batholyte in the study area. It also showed fault zone which trends North East to south... Continue Reading

This research investigated the effect of magnetic field on the thermal conductivity of high temperature type II superconductors. The result suggested that the thermal conductivity of high temperature type II superconductor YBa2Cu3O7- decreases as the applied magnetic field increases at a given temperature. We also found out that the... Continue Reading

A nanocrystalline and porous p-Polyaniline/n-WO3 dissimilar heterojunction at ambient temperature is reported. The high-quality and well-reproducible conjugated polymer composite films have been fabricated by oxidative polymerization of anilinium ion on predeposited WO3 thin film by chemical bath deposition (CBD). X-ray diffraction... Continue Reading

  Digitized high resolution total field aeromagnetic data over Okigwe and environ (Sheet 312) was interpreted using the standard 3-D Euler de-convolution and spectral analysis in order to determine depth to the magnetic basement, delineate the basement topography and relief, and delineate the trend of the structural features associated... Continue Reading

CONTENTS CHAPTER Acknowledgement Dedication Abstract INTRODUCTION The b!eed For Harnessing Solar Enera Fundaments 1 Concep t;s of Solar Radia tion Origin of Solar Radiation Ex tra-Terres trial Solar Radiation The So lar Cons tan t Spectral Distribution of Extra -Terres trial Solar Radia tion Terrestrial &am Insola tion Diffuse Solar Radiation... Continue Reading

Hawked foods are cheap and easily accessible and have met the food needs of people in many cities and towns of developing countries. This study was aimed at ascertaining the diversity of microbial contaminants in foods hawked in Nsukka town. Seven different food samples of cooked foods hawked in Nsukka were examined for the presence of... Continue Reading

The aqueous methanolic extracts of 20 selected plant parts were screened for in-vitro antimicrobial activity against clinical strains of Staphylococcus aureus, Bacillus subtilis, Klebsiella pneumonia, Salmonella typhi, Escherichia coli, Pseudomonas aeruginosa, Aspergillus niger and Candida albicans at a test concentration of 10mg/ml using... Continue Reading

CONTENTS Page Acknowledgement ........................................................................................................... iv Abstract ................................................................................................................................. vi List of Tables... Continue Reading

The anxiolytic and antinociceptive properties of the leaf extract and fraction of Phyllanthus muellerianus Kuntze (Phyllanthaceae) were investigated.The extract (MME; 500.18 g; 10%w/w), obtained by cold maceration in 1:1 mixture of methylene chloride: methanol for 48 h, was fractionationed in a silica gel column which yielded the ethyl... Continue Reading

Dogs are the most common pet animals worldwide, providing companionship, security and a source of dietary protein. Zoonotic helminthes of dogs is a global problem particularly in the developing countries and these dogs, regardless of their benefits, pose a public health risk as they are potential carriers of some pathogens. This study attempted to... Continue Reading

Cerebral malaria occurs due to abnormality in the function of the brain endothelium. This signifies that the brain endothelium plays a crucial role in the outcome of malaria in children. Regulated balance between angiopoietin-1 and angiopoeitin-2 is responsible for the control of normal endothelial cell function. The angiopoietin-Tie-2... Continue Reading

The Republic of Liberia is situated on the southwest corner of the West Coast of Africa between longitudes 7o 30' and 11o and 30' west, and latitude 4o 18 minutes 8o 30' north. It covers surface areas of about 111,370 km2 (approximately 43,506 square miles). The dry land extent is 96,160 square km or 37,570 square miles. Liberia is limited on... Continue Reading

The sedimentary record, as revealed in sediment cores, can be used to reconstruct the past history of contaminant input into the aquatic environment. This is because contaminant inputs equilibrate rapidly with sediment supply, and the sediment column represents a continuous sequence of sediments that are associated with contaminant... Continue Reading

CHAPTER ONE INTRODUCTION 1.1 Background Of Study The prevalence of diabetes is increasing rapidly and electrolyte disturbances are common in patients with diabetes. According to World Health Organization, over 1.4 Nigerians are diabetic in 2017. Diabetes can be defined as a disease condition in which the body’s ability to produce or respond to... Continue Reading

Background: Cholera has been endemic in Ghana, since it was first detected in 1970. Outbreaks have often started in slums of the city especially Accra. In spite of the overwhelming nature of cholera outbreak that has resulted in high mortality and morbidity, there is little information on the reservoir of the causative agent. It has... Continue Reading

This study considered the mineralogical, elemental composition in form oxides and engineering properties such as particle size, specific gravity, bulk density; water content and atterberg limits of two kaolin deposits in Kpankorogi in Edu Local Government of Kwara State and in Ijero-Ekiti in Ijero-Ekiti Local Government Area, Ekiti... Continue Reading

This study looked at the participation of women in quarry mine pits of Ebonyi state and their well-being , covering the three senatorial zones of Ebonyi north, Ebonyi central and south. In these zones, six (6) local government areas were covered. The involvement of these women at the quarry mine pits were investigated through a number of... Continue Reading

The susceptibilities of Salmonella typhi and other pathogens to antibiotics and hot aqueous extract of Hibiscus sabdariffa were investigated using agar diffusion and agar well diffusion methods respectively. Salmonella typhi was sensitive to ampicillin, cetriaxone, ciprofloxacin, gentamycin of ofloxacin and perfloxacin. Nitrofurantoin,... Continue Reading

Some locally available fruits (garden egg, orange, banana, guava, avocado, pawpaw and pineapple).sold in Oye Emene Enugu, Enugu State was examined for parasitological contamination. A total of 87 samples were examined using sedimentation and concentration methods. 11(12.6%) of the 87 fruits were positive for intestinal parasites... Continue Reading