ABSTRACT Grid-connected solar PV systems, though the fastest growing renewable energy technology in the world, have not been fully exploited in Africa, one of the reasons being the very high initial investment. Prices of solar PV systems have however been on a decline for the past few years due to technological innovations which have led to improvement in cell efficiencies and the economies of scale resulting from increase in production. The main purpose of this thesis is to perform,...
Abstract Mining is viewed as the backbone of the economies of mineral rich countries and yet the exploitation of iron ore and other precious minerals in the communities of Lunsar and Bumbuna in the Northern region of Sierra Leone has nothing to write home about except severe environmental degradation and poverty. Nonetheless, the extraction of such minerals has greater potentials for economic development, industrial growth, social progress and the prosperity of a nation. Such minerals are ess...
ABSTRACT Monosodium Glutamate is a widely used food additive and flavor enhancer that is present in most soups, salads and processed meat and also present in packaged food without appearing on the label. This could result to inadvertent consumption of monosodium glutamate in high concentrations. The present study investigated the effect of monosodium glutamate on liver and testes of adult male wistar rats, by daily oral exposure of different doses. Wistar rats (n=20) of the average weight of ...
ABSTRACT Nitrification is the biological oxidation of ammonia into nitrite, followed by the oxidation of nitrite into nitrate by small groups of autotrophic bacteria and Achaea. NH3 removal is beneficial to the plant system as build up is dangerous. Presence and activities of ammonia oxidizing bacteria (AOB) and nitrite oxidizing bacteria (NOB) in freshwater fishpond of a circulating aquaponics system was examined in respect to random points in the aquaponics system (the fish tank, the bio-fi...
ABSTRACT The use of ethanol in fuel blending has long been in use, and this help in controlling gas emissions but cannot be compared to bio-ethanol in control of greenhouse gas emissions. Bio-ethanol is known to adsorb CO2 they emit; it also improves rural economy. A lot of materials especially starchy crops are used in the production of bio-ethanol. This research work focuses on the production of bio-ethanol from molasses; a waste from sugar cane industries. Bio-ethanol is regarded as one of...
Abstract This paper presents the results of investigation conducted to evaluate the properties of concrete containing aluminum Roofing Sheet Waste as partial replacement of cement by weight. The properties investigated included the setting times of cement-ARSW paste, workability, density, compressive strength using 168 numbers of 150 x 150 x 150 mm cube specimens. The chemical compositions and pozzolanic properties were also investigated. The results showed that: (I.) the chemical composition...
ABSTRACT Microfinance Banks are developmental tool that focuses or centers on the extension of credit to the rural or low income earners. In recent time, most people with questionable characters had penetrated the Microfinance sector and deceive them by accessing credit facilities with false collaterals or items already used to access credits from other financial institutions. This has caused collision of various Microfinance Banks into a particular security item on default of such custom...
ABSTRACT Over the years, there have been persistent and consistent issues bordering on security in the Murtala Mohammed International Airport, Ikeja, Lagos. As an International airport as well as the gateway into our Country, it is expected to measure up to international standards in facilities, personnel, services, security, safety etc but unfortunately most of these areas are atimes neglected and consequently fall below acceptable international standards. This research has been designed...
ABSTRACT This work is to appraise the concessioning of Onne Port to Intel Nigeria Limited, the extent to which port reforms has positively influenced the development of Port Operations at Onne Port. To evaluate the developmental changes that have occurred, the researcher used statistical tools like spearman rank order and chi-square to analyze the data collected from the population of port users. Some hypotheses were developed. The study reveals that the hypothesis conducted showed that O...
ABSTRACT The current research investigated the bioavailability of gas flare pollutant fallouts in crop tissues via the soil repository matrix around the Aggah-Egbema Oil Flow Station in Ogba/Egbema/Ndoni Local Government Area of Rivers State. Three sampling locations were established at 1, 2 and 10 km from the gas flare stack. Ambient air quality for SOx, NOx, COx, H2S, suspended particulate matter (SPM10), petroleum hydrocarbons, and trace metals (Cd, Cr, Pb, Mn, Va, Zn) were determined ...
ABSTRACT The water quality of the Imo River in Oyigbo local government area was ascertained using standard methods in this research. The important physicochemical characteristics of the river were investigated during the wet season of 2013 at six sampling locations. In situ measurements were made for water temperature, salinity, turbidity, dissolved oxygen (DO), biological oxygen demand (BOD), etc using the HORIBA U-10 water quality checker. The total dissolved solids and total soluble...
ABSTRACT Leaf extract of Anthocleista djalonensis and Viscum album were investigate as inexpensive and environmentally friendly corrosion inhibitors for mild steel in 0.5 M H2SO4 and 3.5% NaCl was investigated by weight loss and potentiodynamic polarization techniques. The results revealed that Anthocleista djalonensis and Viscum album inhibited the corrosion reaction and the inhibition efficiency increased with increasing concentration of extracts but decreased with prolonged exposure ti...
ABSTRACT The quality of groundwater impacted by a waste dumpsite in Eneka, Rivers State was studied using temporal approach. Groundwater samples were collected and analyzed for 27 parameters using standard methods. Water samples were collected with 250mL plastic containers from seven sampling boreholes. Samples for heavy metals were fixed with concentrated HNO3 in the ratio of 2:500. The descriptive statistics, one-way ANOVA, means plots, variation plots and student’s t-test were us...
ABSTRACT The inadequacies of Nigerian ports toward the delivery of quality services such as good infrastructure, cargo handling, vessel quick turn round time, corrupt and fraudulent tendencies has given rise to privatization and concession since this practices can brief about the required level of efficiency and effectiveness when compared with international standards. This research work would enable us ascertain the effects of concessioning of Nigeria seaports. And also evaluate the viab...
ABSTRACT This study investigated the trace metal contamination of two fish speciesClariasgariepinusandOreochromisniloticus obtained from the Choba axis (Downstream) and Aluu axis (Upstream) of New Calabar River in Rivers State. The fishes were dried, ashed and analysed for trace metals such as Zn, Pb, Cd and Cu using the atomic absorption spectrophotometer of model Unican Solar 969.The results obtained showed that Pb values ranged from 0.097 to 0.655 mg/kg with the highest obtained inOreo...