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Page will reload when a filter is selected or excluded.- Activities of the distilled water, ethanolic and chloroform extracts of Daldina concentrica an ascomycetous fungus was investigated on Escherichia coli, Proteus mirabilis, Pseudomonas aeruginosa, Bacillus cereus and Staphylococcus aureus) using agar well diffusion method. Ethanolic extract of Daldina concentrica showed significantly antibacterial activity against all the test microorganisms except Bacilllus cereus (P ≤0.05). Staphylococcus aureus was the most sensitive organism to the extracts of this fungus with 17.0mm zone of inhibition with ethanol extract. It was also shown that chloroform extract of Daldinia concentrica possessed higher anti-bacterial activity against the five tested microorganisms. The effect of fresh tissues of the fungus on test bacteria indicated that Proteus mirabilis was the only sensitive organism with 5.0mm zone of inhibition while other bacteria were resistant. The implications of these findings were discussed. 1 results 1
- However, there is dearth of information on the dynamic of UGS caused by proximate drivers (PD) in Ibadan metropolis of Oyo State, Nigeria having flooded the direct drivers. Therefore, this study was designed to assess UGS changes and the PD that contribute to the changes in the last 34 years. Landsat images of 1984 (TM), 2001 (ETM+) and 2018 (OLI), coordinates of bench mark places of Ibadan metropolis were obtained. Geometric correction and principal component analysis were carried out on the satellite images. Land cover classification was achieved using maximum likelihood classifier method. Shapefile of Ibadan metropolis was super imposed on the classified images for land use/land cover assessment and Kappa statistics was used to carry out accuracy assessment on the image classification. The change detection analysis was carried out on the classified images using geometric geoalgorithm of ArcGIS. Urban green space change (dependent variable) and Proximate Distance (distance from; UGS edges, roads, built-up area and elevation) were extracted from the Landsat images using the distance command in IDRISI with Cramer's V test of association analysis. Four land use/land cover categories were identified; urban green space, built-up, water body and bare-soil. The UGS and water body decreased from 126,344 ha (85.36%) and 233.01ha (0.16%) to 100,481.20 ha (67.88%) and 136.17ha (0.09%) respectively from 1984 to 2018. On the other hand, builtup area and bare-soil increased from 9,250.72 ha (6.25%) and 12,193 ha (8.23%) to 32,227.16 ha (21.77%) and 15,176.20 ha (10.25%) respectively from 1984 to 2018. Distance from built-up (0.59) and UGS edges (0.56) are the dominant PD of UGS dynamics. About 25,863 ha of green space at rate of 760 ha per annum is given up to built-up area and bare-soil between 1984 and 2018. Urban green space decreased with increase in built-up area. The dominant proximate drivers influencing the changes were the distance from the built-up area and urban green space edges. 1 results 1
- The study sought to obtain empirical evidence of the causal linkages between academic achievement and some socio-psychological variables, and to ascertain the extent to which these variables predict achievement in Social Studies. The study made use of ex-post facto design involving a sample of 624 Junior Secondary School class three students in thirty secondary schools in Oyo State. Each student responded to five different questionnaires and an achievement test in Social Studies. The data was analysed using stepwise multiple regression and path analysis statistics to answer the five research questions raised in this study. The research findings indicate that: 1. Only five of the variables viz: socio-economic status, gender, home language, attitude towards Social Studies and study habits influenced achievement in Social Studies. 2. Most of the variables that have indirect effects on students' achievement in Social Studies do so via study habits. 3. There is no direct effects of i. locus of control on achievement ii. gender on career aspiration iii. attitude towards Social Studies on career aspiration iv. locus of control on study habits v. test anxiety on achievement vi. career aspiration on achievement. 4. Total effects of the direct path accounted for 23.4% of the variation in students' achievement in Social Studies, while total effects of the indirect paths accounted for 9.0%. 5. The eight socio-psychological variables in the study when taken together were quite effective in predicting achievement in Social Studies with multiple R = 78; R(2) =61; Adjusted R(2) = .60; Standard Error = 6.57; R(2) Change = .61; F Change = 119.43. 6. Socio-economic status (VAR1) was the most effective variable in predicting achievement in secondary school Social Studies. 7. Locus of control, career aspiration, and test anxiety did not make any significant contribution to the prediction of achievement in Social Studies. The findings have important implications for the development of bumper and robust counselling package for secondary school students in line with the demand of the National Policy in Education. 1 results 1
- Urban green spaces 1 results 1
- bacteria 1 results 1
- change detection 1 results 1
- extracts 1 results 1
- human infection 1 results 1
- land use change 1 results 1
- mushroom 1 results 1
- proximate drivers 1 results 1
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