Table of Contents

Trace Elements Concentration Determination in Water from Keana Mine Area

Using the Inductively Coupled Plasma Optical Emission Spectrometry (Icp – Oes)

Achide Samson Achide…………………………………………………………………………………………………..               1- 13

The Impacts of Construction Activities and Sustainable Development in Nigerian

Environment

I.Y. Mohammed.…………………………………………………………………………………………………………….                14-24

Effects of Forward Speed on the Performance of a Disc Plough

Kudabo, E.A and Gbadamosi, L………………………………………………………………………………….                25-32

Socio-Economic Effects of Erosion in Anambra State (A Case Study of Orumba

North Local Government Area)

Uche Okek………………………………………………………………………………………………………………………                       33-38

Plant Extracts as Alternative Treatment for Pseudomonas Aerugino Occurrence

 in Clarias Gariepinus (Burchell, 1822) Juveniles

Akinyemi, A. A………………………………………………………………………………………………………………               39-50

Analysis of Import and Export Elasticity of Agricultural Products in Nigeria:

1975 – 2009

Igberi, C. O., Nwibo, S. U., and Odo, N.E.…………………………………………………………………                  51-58

Evaluation of Five Crop Residues for Degradability Potentials in Goats at

Jalingo, Taraba State

K.J. Onaleye, A. Kibon, T.F. Mbahi, B. J. Mufwa, , G.O. Gawi and H.A. Labaran……..                    59-67

Soil Characteristics of Three Iron Toxic Sites in Nigeria

J. Abah, K. N. Drame, M. Sie, B. Manneh, M. E. Abo, A. Umar, and M. Bashir……..………                         68-74

Design of Electrical Distribution Network for 1000 Housing Unit

B. U. Musa, Kalli B. Maiand B.U.Tijjani………………………………………………………………………                   75-81

Age Determination in Citharinus Citharus (Pisces: Citharinidae) and

Synodontis Nigrita (Pisces: Mochokidae) In Lake Ona, Southern Nigeria

Ekelemu, K. Jerimoth and Samuel, A.A. Zelibe…………………………………………………    ……..              82-94

Geologic Investigation of Pegmatite Veins in Parts of the Obudu Basement

Complex, Se Nigeria

Igonor, Emmanuel E., Oden, Micheal I. and Horsley Robert J. (late)……………………             95-107

Application of Gauss-Laguerre Quadrature Formula in Determination of

Dimensionless Pressure Distribution in a Vertical Well

Oloro J, Adewole E.S and Olafuyi.O.A…………………………………………………     ………………….              108-114

Comparative Analysis of Rice and Two-Wave with Diffuse Power (Twdp),

Fading Models in Telecommunication

Agbo P.E, Ibeh G.F, and Okeke S. O…………………………………………………………………….….                   115-122

Biokinetics of Mesophilic Anaerobic Digestion of Poultry Droppings

Wauton, I.and Gumus, R.H…………………………………………………………………………….………..                123-134

COMPARATIVE ANALYSIS OF RICE AND TWO-WAVE WITH DIFFUSE POWER (TWDP), FADING MODELS IN TELECOMMUNICATION

*¹Agbo P.E, ¹Ibeh G.F, and ²Okeke S. O

¹Department of Industrial physics, Ebonyi State University, Abakaliki, Nigeria                                 ²Department of Physics Education, Federal College of Education (Technical), Anambra State

E-mail: ekumaagbo@gmail.com, ibehgabriel@ymail.com

ABSTRACT

This paper present the comparative analysis of Rice and Two wave with Diffuse power (TWDP) fading models in terms of their probability density function (pdf) that describe small scale, local area fading experienced by narrow band wireless receivers in telecommunication. The paper also reviewed the basic method of generating the probability density function (pdf) for Rice and Two wave with Diffuse power (TWDP) model. Results of analysis from the plot of the probability density function (pdf ) against received envelope for worse distortion detection is also presented. Deduction from the graphical analysis on the nature of distortion observed at the presence of Strong Line of Sight (LOS) components in fading channels was also presented.

Keywords: Fading channel, Small scale effect, Random vector, probability density function, Multipath, Line of sight.

APPLICATION OF GAUSS-LAGUERRE QUADRATURE FORMULA IN DETERMINATION OF DIMENSIONLESS PRESSURE DISTRIBUTION IN A VERTICAL WELL

¹Oloro J, ²Adewole E.S and ³Olafuyi.O.A

¹Petroleum Engineering Department, Delta State University, Oleh Campus

²Petroleum Engineering Department, University of Benin

³Petroleum Engineering Department, University of Benin

ABSTRACT

In this paper, application of Gauss-Laguerre quadrature formula was used to determine dimensionless pressure distribution in a vertical well based on the following assumptions: *Infinite acting reservoir that is, the reservoir is infinite size. *The well is producing at constant flow rate. *The reservoir is at a uniform pressure, when production begins. *The well, with a wellbore radius of radius of r_w is cantered in a cylindrical reservoir of radius r_e *No flow across the outer boundary. In work, the result shows that as r_D increases,  P_D decreases. This indicates that when the radius of wellbore is increasing, productivity decreases for a vertical well and also at early t_D the productivity is very insignificant. When P_D and t_D was plotted on log-log at late time the slope was 1.1513.This indicates that fully penetrating vertical well in an infinite reservoir and boundaries have been felt. The values of E_i at various r_D, shows that as r_D increases, E_i decreases. The results also shows that dimensionless pressure P_D increases with dimensionless time t_D and log approximation was applied when ≥0.25 and the smaller alpha, the higher the productivity. This method has ability to handle all homogeneous porous media, ability to handle all shapes of boundaries, regular or irregular and ability to eliminate trial-and error procedure.

Key words: Dimensionless, reservoir, wellbore, pressure, radius

GEOLOGIC INVESTIGATION OF PEGMATITE VEINS IN PARTS OF THE OBUDU BASEMENT COMPLEX, SE NIGERIA

¹Igonor, Emmanuel E., ² Oden, Micheal I. and Horsley Robert J. (late)

¹Petra Prospectors Limited, (Nigeria)

²Department of Geology, University of Calabar, Cross River State, Nigeria.

ABSTRACT

Pegmatites the world over have been known to generate lots of interest because they sometimes play host to abundance of economically valuable mineral deposits like gemstones and rare-metal ores of tantalum, niobium, wolfram, lithum and tungsten, which drive the present day economic revolution. But the pegmatite veins of Obudu massif have received little or no research or commercial attention. A detailed geologic mapping exercise spanning over 30days  was undertaken to study the various lithological units of the area (Nigerian Topo-sheet Obudu 291SE), with special interest in the pegmatite veins as they occur in the area. From the field observation and analyses, the major lithological unit’s in Obudu SE area are: gneisses, schist, amphibolites, charnockites, dolerite dykes, quartz veins, and pegmatite veins. Traceable pegmatite vein length ranges from less than 1m to over 80m; though the most frequently occurring vein length is between 6m – 8m. Pegmatite vein widths range from <1cm to over 7m. The pegmatite veins of Obudu SE favour high angle fractures i.e fractures which dip at angles >50^o. Over 200 strike measurements of the pegmatite veins show that  more than 25% fall between 161^o – 180^o from north, which is the most preferred orientation. The pegmatites are mainly made up of quartz, feldspar and muscovite flakes but sometimes also contain gem mineralisation like amethyst, tourmaline, or aquamarine. Prospects for rare-earth mineralisation in the pegmatites of Obudu SE area look unpromising as they lack any visible occurrence of tantalite, niobium, lepidolite or any other rare-earth metal even though further geochemical analysis would be needed to ascertain this claim.

Keywords: pegmatites; Obudu massif; geologic investigation; strike and dip; orientation; southeast Nigeria;

AGE DETERMINATION IN Citharinus citharus (Pisces: Citharinidae) AND Synodontis nigrita (Pisces: mochokidae) IN LAKE ONA, SOUTHERN NIGERIA

Ekelemu, K. Jerimoth and Samuel, A.A. Zelibe

Department of Fisheries Science

Delta State University, Asaba, Nigeria

Email: jerimothekelemu@yahoo.com

ABSTRACT

Age determination of Citharinus citharus (Pisces: Citharinidae) and Synodontis nigrita (Pisces: mochokidae) in Lake Ona, Southern Nigeria were made in a study that spanned 2001 to 2003. The fish species were caught, using varied fishing gears that included:- bottom set and surface set gill nets of mesh sizes 1.0, 3.0 and 5.0cm, with each having a length of 25.0m and a depth of 3.0m; cast net with stretched mesh size of 6.4cm; fish baskets, non-return valve traps which along with fences, fish pots and a set of long-lines of length 35.0m. Fish Aggregating Devices (FAD) was deployed to aggregate fishes and invariably increased fishing success. Sampling was at three stations (I, III and V) established on the Lake. In the Laboratory, specimens collected were identified and sexed, their total and standard lengths were measured in centimetres while their body weights were taken in grams. The age of fish species were determined by analysis of Frequency distribution of Ocular Lens Diameters (OLD) measured in Millimeters (mm) and validated by means of Length-Weight frequency distribution. Catch statistics were, 288 specimens of S.nigrita with a sex ratio of 1.6:1, TL range of 06.0-21.5cm and BW range of 05.8-581.2g. Results of the Frequency distributions of OLD in S. nigrita studied indicate the population was made up of one age group with modal class interval of 10.0-12.5cm. In C. citharus, a single age group was clearly evident with modal class interval of 15.0-17.5cm. A lone class interval of 25.0-27.5cm, distal from the bulk may suggest another age group of C.citharus not fully represented in the sample. Length and weight Frequency distributions of both species equally followed the same pattern as the OLD frequency distribution confirming mainly single age groups in the studies populations. Results obtained equally indicate there was a significant difference (P<0.05) between the left and right OLD in both species irrespective of sex. In C. citharus, all the left lenses were bigger than the right ones. In S. nigrita however, 253 (88.77%) of the population had bigger left OLD while the remaining 32 (11.23%) had the right OLD bigger than the left ones. Since all other features used in identifying the specimens were the same, except for the observed differences in the eye lens of S. nigrita, it is suggestive that we may have seen the outset of speciation.

Keywords: Length-weight, Ocular lens diameter, Frequency distribution, Sex ratio, Lake Ona, Southern Nigeria.

DESIGN OF ELECTRICAL DISTRIBUTION NETWORK FOR 1000 HOUSING UNIT

B. U. Musa¹, Kalli B. Mai² and B.U.Tijjani³

¹Department of Electrical and Electronics Engineering, University of Maiduguri, Nigeria

²Department of Electrical and Electronics Engineering, Ramat polytechnic Maiduguri, Nigeria

³Department of Electrical and Electronics Engineering, Ramat Polytechnic Maiduguri, Nigeria

ABSTRACT

This paper deals with the design of electrical distribution network for 1000 housing units Kano road, Maiduguri, Borno State.  The distribution system is designated to be overhead line, because it is cheap and tapping can be conveniently made at anytime.  The overhead line accessories such as the pole, conductors, insulators, cross arms stay insulators and stay wives are also designed to suit the area.  The transformer ratings are design to be ten number of 500 KVA (11/415V).  The system is also designed to carry the load imposed upon it without damage to the conductors.  The system can also meet the load variations which are likely to arise in near future and provide continuity of supply.

SOIL CHARACTERISTICS OF THREE IRON TOXIC SITES IN NIGERIA

¹J. Abah, ²K. N. Drame, ²M. Sie, ²B. Manneh, ³M. E. Abo, ³A. Umar, and ³M. Bashir

¹Department of Chemistry, Benue State University, Makurdi, Nigeria

²Rice Research Division, National Cereals Research Institute, Badeggi, Niger State, Nigeria

³Africa Rice Center, Cotonou Benin.

E-mail: abahjim@yahoo.com

ABSTRACT

Irrigated and rain-fed land often showed some sort of nutritional constraints to rice growth caused by either nutrient deficiencies or toxicities. However, comprehensive data on soil physicochemical characteristics of most lowland ecosystems used for rice cultivation in Nigeria are scanty, making it a complex problem to identify specific yield constraint. This study determined the soil characteristics of rain-fed experimental sites for the Stress Tolerant Rice for Africa and South Asia (STRASA) at Adike (Benue State), Edozighi (Niger State) and Ndubia (Ebonyi State), Nigeria using standard laboratory methods. The mean concentrations of ferrous iron (Fe²⁺) within 0-20cm and 20-40cm of the soil layers ranged from 800-1230ppm and 1010-1780ppm respectively. The mean iron toxicity score of the 80 lines of rice tried in the experimental sites varied between 1.75-3.65%. Zinc contents of the soil layers ranged from 1.09-2.29ppm and 3.43-4.44ppm. The Physicochemical analysis of the farm soils revealed low levels of nitrogen, potassium, organic matter, cation exchange capacity and acidic ecology with pH range of 4.15-5.22. However, available phosphorus was quite high in all the project sites. The experimental sites recorded zinc deficiencies while the high soil levels of ferrous iron in all the project sites is indicative of iron toxicity hot spot. The low cation exchange capacity of the soils has implication on the vulnerability of the sites to leaching of nutrient elements. Therefore, proper agronomic management is required to enhance rice productivity in the experimental sites.

Key words: Ferrous Iron, Toxicity, Physicochemical Parameters, STRASA