Moses Emetere

Forecasting Hydrological Disaster Using Environmental Thermographic Modeling

The concept of thermographic model is new to environmental studies. Its mode of operation is fairly synonymous to the operational technique of the regular thermography machine. The location of the study area is between latitudes 8°24′N and 9°20′N of the equator and between longitudes 7°30′E and 8°48′E of the Greenwich Meridian. The subsoil for the soil samples was identified within the particles range 63 ± 3% sand, 28 ± 5% clay, 6 ± 2% silt, 0.9 ± 0.3% organic carbon, and 1 ± 0.2% organic matter. Field work was carried out and the measurements obtained were validated using satellite data. At shallow ground depth, the thermal diffusivity is not proportional to either the increase or the decrease in the ground temperatures. Features of the temperature anomaly showed strange shifts per month within 2012. The environmental thermographic model (ETM) can be adopted by meteorological ground stations to investigate the net radiation over the land. The ability of the ETM could be extended to monitoring ground anomalies like fractures of basic rocks amongst others.

Parametric retrieval model for estimating aerosol size distribution via the AERONET, LAGOS station.

The size characteristics of atmospheric aerosol over the tropical region of Lagos, Southern Nigeria were investigated using two years of continuous spectral aerosol optical depth measurements via the AERONET station for four major bands i.e. blue, green, red and infrared. Lagos lies within the latitude of 6.465°N and longitude of 3.406°E. Few systems of dispersion model was derived upon specified conditions to solve challenges on aerosols size distribution within the Stokes regime. The dispersion model was adopted to derive an aerosol size distribution (ASD) model which is in perfect agreement with existing model. The parametric nature of the formulated ASD model shows the independence of each band to determine the ASD over an area. The turbulence flow of particulates over the area was analyzed using the unified number (Un). A comparative study via the aid of the Davis automatic weather station was carried out on the Reynolds number, Knudsen number and the Unified number. The Reynolds and Unified number were more accurate to describe the atmospheric fields of the location. The aerosols loading trend in January to March (JFM) and August to October (ASO) shows a yearly 15% retention of aerosols in the atmosphere. The effect of the yearly aerosol retention can be seen to partly influence the aerosol loadings between October and February.

Characteristic Significance Of Magnetic Relaxations On Copper Oxide Thin Film Using The Bloch Nmr

In this paper, a theoretical model was described to analyze the magnetic relaxations of samples of copper oxide thin film cells. Experimentally, the copper oxide thin film was characterized at different oxidation temperatures between 150°C to 450°C. The introduction of the Bloch NMR equations was developed to determine the functionality of the individual samples. The magnetic relaxation characterization confirmed the degree of disordered in the copper oxide sample. This disorderliness of the copper oxide sample engendered a magnetic instability which gave rise to magnetic deflagration. Magnetic deflagration was found to be dependent on the magnetic re-orientation initiated by the RF pulse. A new law was proposed which is a modification of the Arrhenius law.

Investigations of the Sheath Effect on the Resultant Magnetic Field of a Cylindrical Monopole Plasma Antenna

The functionality of the plasma antenna has been narrowed to types and brand names only. The physics of its operation has been neglected and has stagnated technological innovations. The magnetic field in the sheath and plasma were investigated. Notable specifications were worked out in the proposed improved cylindrical monopole plasma antenna. The occurrence of femto spin demagnetization was discovered between the duration of switch on and switch off of the antenna. This phenomenon seems transient because magnetization is highest at the switch on/off point.

Volcanic eruption trends in the five-years pre-eruption era

Predicting volcanic eruption and magmatic transports is a global research. In this study, the temperature deviation curve model and temperature polynomial expansion scheme was used to calculate the time-scale of an active pre-eruption process. Satellite imagery within the timescale was harvested to further corroborate the findings.

A Model for Analyzing Temperature Profiles in Pipe Walls and Fluids Using Mathematical Experimentation

Temperature profiling in both fluid and pipe walls had not been explained theoretically. The equations of energy balance and heat conductivity were queried by introducing known parameters to solveheat transfer using virtual mathematical experimentation. This was achieved by remodelingPoiseuilles equation. Distribution of temperature profiles between pipe wall, fluid flow, and surrounding air was investigated and validated upon comparison with experimental results. A new dimensionless parameter (unified number (U)) was introduced with the aim of solving known errors of the Reynolds and Nusselts number.

Alkaline Pre-Treatment and Enzymatic Hydrolysis of Waste Papers to Fermentable Sugar

Waste paper is known to be the major component of organic solid waste. In this research, waste paper was used as a feedstock for the production of fermentable sugar with the aid of two (2) microorganisms. The waste papers used included newspaper, office paper and foolscap paper. Enzymatic hydrolysis was carried out on the waste papers after the alkaline treatment using Aspergillus niger and Pseudomonas aeruginosa at different temperatures of 25oC, 37oC and 42oC. The highest yield was obtained from the foolscap paper, which produced reducing sugar at a maximum concentration of 486.66 mg/L after two weeks using Pseudomonas aeruginosa at 37oC. On the other hand, hydrolysing using Aspergillus niger, produced reducing sugar at a maximum concentration of 365 mg/L at an optimum temperature of 25oC with office paper

In Situ Bioremediation of Crude Petroleum Oil Polluted Soil Using Mathematical Experimentation

Mathematical modelling of in situ (on site) bioremediation of crude petroleum polluted soil was investigated. An unsteady state mathematical model based on bulk flow of oil through the soil and molecular diffusion through the pores of the soil was developed. The parabolic partial differential equation developed was resolved into a system of ordinary differential equations (ODEs) by orthogonal collocation method and the necessary boundary condition was used. The resultant system of ODE was solved using fourth-order Runge-Kutta method. The simulated data gave a good agreement with experimental data.

Investigating the cyclic breaking of butyl-, methyl- and ethyl-biodiesel from waste vegetable oil using ultraviolet-visible spectrophotometry

Abstract The main advantage of biodiesel to fossil-diesel is attributed to the ester functional group in its structure. Many researchers have affirmed that the functional group assists the diesel engine to function at its peak. However, the efficiency of the biodiesel to keep the mechanical piston-strokes in the diesel engine is experimentally presumed low especially if the engine works for a long time. In this research, it was proposed that the cyclic break down of the ester functional group of biodiesel is a major disadvantage. Butanol, ethanol and methanol biodiesel were produced in the laboratory using waste vegetable oil from restaurant. The Ultraviolet-visible spectroscopy or spectrophotometer (UV–Vis) was used to investigate the cyclic break down in the Butyl-, Methyl- and Ethyl- biodiesel. The Ultraviolet-visible spectroscopy or spectrophotometer (UV–Vis) was used to probe the various biodiesel samples with a start and stop wavelength of 500 and 900 nm respectively. The wavelength interval was 1 nm at a high scanning speed. Between 500–550 and 800–850 nm, the Ethyl- and Butyl- biodiesel had an absorbance of 2.7 and 1.6 respectively with 3 peaks each. Methyl-biodiesel had the highest absorbance of 1.7 at 600–650 nm with 1 peak. The computational extrapolation of all outcomes affirms that cyclic breaking is highest in Butyl-biodiesel. The most resilient biodiesel type was the Ethyl-biodiesel. However, it was recommended that cyclic breaking may be preserved by ratio-mixing of biodiesel with fossil-diesel.

A Simple Technique for Sustaining Solar Energy Production in Active Convective Coastal Regions

The climatic factors in the coastal areas are cogent in planning a stable and functional solar farm. 3D simulations relating the surface temperature, sunshine hour, and solar irradiance were adopted to see the effect of minute changes of other meteorological parameters on solar irradiance. This enabled the day-to-day solar radiation monitoring with the primary objective to examine the best technique for maximum power generation via solar option in coastal locations. The month of January had the highest turbulent features, showing the influence of weather and the poorest solar radiance due to low sunshine hour. Twenty-year weather parameters in the research area were simulated to express the systematic influence of weather of PV performance. A theoretical solar farm was illustrated to generate stable power supply with emphasis on the longevity of the PV module proposed by introducing an electronic concentrator pillar (CP). The pictorial and operational model of the solar farm was adequately explained.