Browsing by Author "Bello, M. O."
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Item A Study on Endophytic Fungi, Proximate and Chemical Compositions of a Local Variety of Mango Fruit (Mangifera indica L.)(University of Ruhuna, Sri Lanka., 2018) Garuba, Taofeeq; Olayinka, Bolaji U.; Abdulkareem, Khadijah A.; Bello, M. O.; Olaleye, Faith Y.Mango (Mangifera indica L.) is an important tree which produce edible fruits. Different varieties of mango are available and well-studied. However, little attention has been shown to popular Ogbomoso variety especially for its endophytes and chemical profile. This work aimed at identifying endophytic fungi and carrying out proximate analysis as well as phytochemical analysis of the fruit. Potato Dextrose Agar was used as a medium for the isolation of fungi from the homogenized pulp. Proximate analysis was carried out using standard method of Association of Analytical Chemistry (AOAC). Fourier Transform Infrared Spectroscopy (FTIR) was done to determine characteristic peaks and functional groups of compounds using Thermo Scientific Nicolet iS5 with iD1 transmission. Gas Chromatography- Mass Spectrometry (GC-MS) was used to study the chemical profile of the sample. Aspergillus niger. A. flavus and Rhizopus stolonifer were the identified endophytes. Moisture and lipid were observed to be highest (76.87%) and lowest (0.38%) respectively in the sample. The amount of carbohydrate was 18.93%. The FTIR result revealed the presence of NH2, OH, CH2, C=O (carboxylic) and N-H 1o and 2o amine as important functional groups. A total of 23 compounds were found in the methanolic extract of the sample where Imidazolidin-2-one (18.43%) was the principal compound. N, Ndibenzylhydroxylamine (15.36%), Methyl hexadecanoate (7.33%), Hexadecamethylcyclooctasiloxane (4.51%) were also present in considerable quantities. It is confirmed that the homogenized pulp of Ogbomoso variety of mango fruit is rich in phytochemicals that are useful especially in pharmaceutical industries.Item Evaluation of the Foundry Properties of Oyun River (Ilorin) Moulding Sand(Faculty of Engineering and Technology, Adeleke University, Ede, Nigeria., 2019) Shuaib-Babata, Y. L.; Hassan, H. K.; Ajao, K. S.; Ambali, i. O.; Bello, M. O.Inadequate information on available natural moulding sands in Nigeria resulted to the use of the sand for casting without recourse to their suitability. This practice resulted to poor casting quality and underdevelopment of Nigerian foundry industry. In this study, the properties of Oyun natural moulding sand were evaluated to determine its suitability for sand casting. The chemical and physico -mechanical properties of the sand samples were examined using America Foundrymen’s Society (AFS) guidelines. The results of the chemical analysis showed that the sand contained SiO₂ and, Al₂O₃ from 84.49 to 84.58% and 7.17 to 7.22% respectively, with smaller proportions of other elements such as NaO₂ and K₂O, CaO, Fe₂O₃, MgO and TiO₂. The physico-mechanical properties of the sand were clay content (14.96 - 15.79 %), moisture content (8.15 – 8.48%), grain fineness number (83.40 – 89.24), green compressive strength (77.31 – 79.73 KN/m²), dry compressive strength (200.24 – 214.65 KN/m²) and refractoriness (above 1300°C). These results were within the AFS standard recommendation values for non-ferrous metal casting. Hence, Oyun moulding sand was found suitable as mould sand for various types of casting of metals like grey steel, aluminum, bronze, brass and light steels. Effective utilization of this sand for foundry applications will help to improve the economy of Nigeria and subsequently aid in reducing social problems as result of unemployment.Item Evaluation of the Foundry Properties of Oyun River (Ilorin) Moulding Sand.(Faculty of Engineering and Technology, Adeleke University, Ede, Osun State Nigeria., 2019-06-13) Shuaib-Babata, Y. L.,; Ibrahim, H. K.,; Ajao, K. S.,; Ambali, I. O.; Bello, M. O.Inadequate information on available natural moulding sands in Nigeria resulted to the use of the sand for casting without recourse to their suitability. This practice resulted to poor casting quality and underdevelopment of Nigerian foundry industry. In this study, the properties of Oyun natural moulding sand were evaluated to determine its suitability for sand casting. The chemical and physico -mechanical properties of the sand samples were examined using America Foundrymen’s Society (AFS) guidelines. The results of the chemical analysis showed that the sand contained SiO₂and, Al₂O₃from 84.49 to 84.58% and 7.17 to 7.22% respectively, with smaller proportions of other elements such as NaO₂and K₂O, CaO, Fe₂O₃, MgO and TiO₂. The physico-mechanical properties of the sand were clay content (14.96 -15.79 %), moisture content (8.15 –8.48%), grain fineness number (83.40 –89.24), green compressive strength (77.31 –79.73 KN/m²), dry compressive strength (200.24 –214.65 KN/m²) and refractoriness (above 1300°C). These results were within the AFS standard recommendation values for non-ferrous metal casting. Hence, Oyun moulding sand was found suitable as mould sand for various types of casting of metals like grey steel, aluminum, bronze, brass and light steels. Effective utilization of this sand for foundry applications will help to improve the economy of Nigeria and subsequently aid in reducing social problems as result of unemploymentItem PREDICTORS OF CHILD ABUSE IN SELECTED LOCAL GOVERNMENT AREAS OF LAGOS STATE NIGERIA(2022) Bello, M. O.; Ologele, I.; Babatunde, C. C.; Pedro, U. A.; Yusuf, T. B.It has been observed that a lot of Children are out of School in Nigeria as a result of Child abuse cause by cultural practices, Parent’s level of Education, Child Gender and single Parenthood. This study therefore, investigates the Cultural factors as predictors of Child abuse in selected Local Government Areas of Lagos State, Nigeria. The descriptive survey research was used for the study. Random sampling technique was used to select sixty Parents (60) from each of the 30 Local Government Areas selected in Lagos State, Nigeria. A self develop Questionnaire of 0.0671 reliability level was used for data collection. Three hypotheses were tested while Chi-Square statistics was used to test the hypotheses at P<0.05 alpha level. The findings revealed all the hypotheses were rejected meaning that Parents level of Education, single Parenthood and Child Gender are predictors of Child abuse in Lagos State, Nigeria. Based on these finding, recommendations were made on how Government at all levels should enact laws which will make Child abuse an illegal act, create more awareness through Television and Radio stations, Town criers etc on the risk of Child abuse and ways to prevent/control it.