Vol 20, No 1 ,2019,: African Scientist

An Evaluation of the Effect of Treatment with Mixture of Cadmium and Lead on the Growth of Okra [Abelmoschus esculentus (L.) Moench]

Abelmoschus esculentus (L.) Moench was grown from seeds in soil polluted with a mixture of cadmium and lead in the ratio 1:1. The experiment consisted of control and four treatments (25, 50, 75 and 100 mg/kg) in three replicates. Data for growth parameters (seedling emergence, plant height, number of leaves, leaf loss, leaf area, and stem girth) were collected weekly for 3 months and number of flowers and fruits later in the experiment. The research lasted for 5 months. Physico-chemical and heavy metal analysis were carried out on soil samples at the end of the experiment.


Effect of Ballast Water on the Growth of Two Aquatic Macrophytes (Azolla pinnata R.Br and Lemna paucicostata Hegelm)

The study investigated the effect of ballast water on the growth of two aquatic macrophytes, Azolla pinnata R.Br. and Lemna paucicostata Hegelm. The ballast water used for this study was sourced from MTCRARROCH vessel which berthed in Koko Port. The macrophytes were grown at different concentrations (25%, 50%, 70% and 100%) of ballast water, using distilled water as control (0%). The experiment lasted for twelve (12) days. There was increased growth in both macrophytes with increasing concentration of ballast water.

Impact of Crude Oil Treatments on the Growth, Survival, Morphology and Plant Based Component of Eichhornia crassipes

This experimental study was carried out to investigate the growth response, survival and morphology of Eichhornia crassipes (Mart.) Solms (Pontederiaceae) in crude oil polluted freshwater. The parameters measured include leaf diameter, stem girth, root length, chlorophyll content index and biomass production. The experimental treatment concentrations used were 0% (control), 1%, 2%, 3% and 4% (v/v). Using three replicates per treatment, the plants were exposed to all concentrations for eighteen days.

The Use of Classification Algorithm for Forecasting the Academic Performance of Students of Biological Sciences, University of Africa, Toru-Orua

In recent years, the application of Data Mining has grown exponentially, spurred by its ability to allows us discover new, interesting and useful knowledge about data in almost every facet of discipline. Its application in education is also gaining a lot of attention across the globe. In this research, a data mining technique known as classification algorithm (Decision Tree) was used to forecast students’ academic performance. The methodology adopted in this work is the CrossIndustry Standard Process for Data Mining (CRISP-DM) which is a cyclic approach that includes six principal phases.


Evaluation of Acute Toxicity of Cassava Effluent on the African Catfish [Clarias gariepinus (Burchell 1822)] and Freshwater Clam [Egera radiata Lam (Bivalvia, Donacidae)]

The indiscriminate discharge of the wastewater generated during the processing of Manihot esculenta Crantz into the environment or public sewers remains a source of concern. In this study, the acute toxicity (96-h LC50) of cassava effluent was evaluated using Clarias gariepinus juveniles and Egera radiata. The two organisms were exposed to different concentrations of the effluent using a renewable static bioassay with continuous aeration. The LC50 of exposed C. gariepinus juveniles was found to be 1.92 ml/L with lower and upper confidence limits of 1.35 ml/L and 2.19 ml/L, while that of E.

Effect of Municipal Dumpsite on Vegetation and Soil

Comparative assessment of the soil and vegetation in a municipal dumpsite at Iguomo, Benin City, Nigeria at different distances from the dumpsite was carried out. An area of 30m2 was marked out and divided into three plots of 10 m2 each and these were designated as plots A, B and C. An area of 10 m2 was also taken at a distance of 100m away from the dumpsite, it served as the control plot or plot D. Population sampling was done to determine the species diversity across the plots. Soil samples were collected from each plot and microbial and physico-chemical analyses were carried out.

Cytomorphological Studies on the Echinops L. in the Nigerian Asteraceae (Composit

Members of the genus Echinops are now widely used in treating brain disorders, ophthalmic problems, chronic fever, pains in the joints and inflammations. They are aphrodisiac and are used for treating pregnant women. The Nigeria species have not been discovered in this way. The plants are therefore being suggested to our scientists, chemists and agriculturists for possible screening for drug development. Cytomorphological studies on 4 taxa distributed in 3 species of the Echinops have been studied.