Browsing by Author "Lawal, A.R."
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Item Assessment of types and significant causes of building defects in University of Ilorin, Ilorin, Nigeria(Department of Civil Engineering, University of Ilorin, Ilorin, Nigeria, 2017) Lawal, A.R.; Jimoh, M.O.; Jimoh, A.A.Cases of building collapse in Nigeria has been on the increase since the turn of the millennium. Yet, it has been observed that most of these buildings do not just give way and fail; they first show symptoms of distresses in the form of defects. It can be said that defects in buildings constitute undesirable challenges and threats to users. Thus, investigation studies were carried out in University of Ilorin on some of its buildings, so as to determine the types and major causes of defects with a view to ultimately suggest appropriate reducing measures. The research was divided into qualitative strategy which served to reveal physical extent, and quantitative strategy which helped to gather factual data and study the relationship between how such facts accord with findings and research of past literatures. Case study survey and questionnaire survey were used. While the former helped to present the frequency of defects as actually obtainable, the latter method of assignment provided the perception levels of study respondents (clients, consultants, contractors and end users) on defects in University of Ilorin buildings. Findings thus reveal that active cracks (>1.5mm wide) on beams, columns, slabs and walls are the most frequent type, while improperly sloped roof gutters are the least frequent type. Also, workmanship error accounted for the most probable cause of 70% of the type of defects, while defective material accounted for the most probable cause of 30% of the types of defects.Item Composition of Coconut (Cocos nucifera L. Cv. Fiji Dwarf) Edible Endosperm and Physicochemical Properties of its Oil(Federal University of Kashere-Nigeria, 2021-08-15) Abdulkareem, K.A; Olayinka, B.U; Lawal, A.R.; Adeniji, O.A; Ibuowo, M.B; Jacob, O.E; Abdulra'uf, L.B; Kareem, I.; Aboyeji, O.O; Mustapha, O.T; Etejere, E.OCoconut (Cocos nucifera L.) is one of the most important oil producing crops in the world. It has enormous industrial and health benefits. To affirm the foregoing, the proximate and physicochemical constituents of the oil extracted from the edible endosperm were determined. The results showed that percentage moisture, protein, ash, crude fat, crude fibre and carbohydrate had respective values of 42.39 %, 6.21 %, 1.04 %, 17.18 %, 8.95, and 23.69 %. The edible mesocarp has high amount of mineral elements such nitrogen, potassium, calcium and phosphorus. Whereas, elements such as sodium, manganese, magnesium, copper and chlorine occurred in low quantity. The physicochemical properties of the oil showed a refractive index of 1.46, specific gravity of 0.92 g/cm3, acid value of 2.15 %, free fatty acid of 1.08 %, saponification of 125.980 mgKOH/g and iodine value of 2.89 indicating that the oil is good for consumption. Given, the results of proximate and mineral compositions, the edible endosperm could therefore be considered as good source of energy and alternative source of dietary supplement for human nutrition.