http://196.220.128.81:8080/xmlui/handle/123456789/183 2026-04-26T22:03:17Z 2026-04-26T22:03:17Z AYODEJI, ANJORIN S. http://196.220.128.81:8080/xmlui/handle/123456789/5861 2026-04-24T12:11:45Z 1996-01-01T00:00:00Z

DEVELOPMENT OF A THERMAL CONDUCTIVITY MEASURlNG APPARATUS FOR NON-METALLIC SOLIDS AYODEJI, ANJORIN S. A thermal conductivity measuring apparatus for non-metallic solids (poor conductors) based on modified Lee's disc method has been designed, constructed and tested. Specimens of concrete, glass, portland cement, asbestosand corrugated cardboard were prepared in the form of discs each of diameter 50mm but of varying thicknesses. The average thermal conductivity values obtained for these specimens over a heat source temperature range of 25°C- 60°C were found to be 1.285, 0.737, 0.327, 0.121 and 0.072 Wm-1 K-1 respectively. The values of thermal conductivity obtained for the various specimens were compared with those given in the literature for the purpose of determining the effectiveness of the apparatus. The differences in values ranged between 1.55- 11.03 per cent thus giving credence to the effectiveness of the apparatus. 76p.:ill.;30cm

1996-01-01T00:00:00Z AKINSIPE, TAIWO ELIZABETH http://196.220.128.81:8080/xmlui/handle/123456789/5860 2026-04-24T11:58:12Z 2004-12-01T00:00:00Z

DEVELOPMENT OF A ROTARY FURNACE FOR COTTAGE FOUNDRIES AKINSIPE, TAIWO ELIZABETH A 20 kg Rotary Furnace was designed and fabricated for application at the cottage industry level. The capacity which is considerably smaller than the industrial type (100 kg and above) facilitated economic application by the small-scale inventor. The components of the furnace such as the lining and the metallic bought out parts were locally developed and the performance compared very well the imported materials. Although higher capacity imported furnace with imported lining gave higher performance of higher refractoriness and life span. The present prototype still gave satisfactory performance and provides a ready source of relining. 75p.:ill.;30cm

2004-12-01T00:00:00Z BULIAMINU, KAREEM http://196.220.128.81:8080/xmlui/handle/123456789/5859 2026-04-24T11:51:21Z 1998-09-01T00:00:00Z

DEVELOPMENT OF A QUEUEING MODEL FOR EFFECTIVE CREW SIZE IN MAINTENANCE OPERATIONS BULIAMINU, KAREEM This thesis describes the use of heuristics and cost models based on the queueing theory to determine effective crew size for maintenance operations. The model was applied to mechanical maintenance workshop, Federal University of Technology, Akure, due to the fact that it has characteristics of external maintenance system. A computer software in "QBASIC" was developed to solve the model. The results obtained from this approach showed that, the use of heuristics generated effective crew size of one (a seven-man crew), while that of maintenance cost model was two, given a difference of 50%. Also, by using deterministic cost model 1.5 secs. was used to process the results, while the time used to process the results in stochastic cost model depends on maximum simulation time MCT, but for heuristic it was just 0.5 second. The results revealed the advantage of using heuristic over complex equations of maintenance cost models. Therefore, to achieve higher response rate, the jobshop should operate on two crews. Although, management can decide to operate on one crew (as prescribed by heuristic) if other maintenance strategic decisions are in her favour than any other jobshops in the environment. Finally, the results generated by both deterministic and stochastic cost models showed that both are equally likely to describe the maintenance jobshop under study 128p.:ill.;30cm

1998-09-01T00:00:00Z ADEOSUN, Emmanuel Oluwatoyin http://196.220.128.81:8080/xmlui/handle/123456789/5858 2026-04-23T11:50:03Z 2001-11-01T00:00:00Z

WATER USE,GROWTH AND YIELD OF AMARANTHUS CAUDATUS (Quinoa) UNDER IRRIGATED CONDITION ADEOSUN, Emmanuel Oluwatoyin Soil water is a major hinting factor to crop production particularly under dry season condition. Field experiments were conducted in the early and late season periods of year 2000 at the experimental farm of the Department of Agricultural Engineering, Federal University of Technology, Akure (F.U.T.A.). The aim was to evaluate the growth and yield of amaranthus under irrigated condition and to determine water use pattern of the crop with a view to developing a good water management strategy. The treatments were: irrigation at full pan evaporation (T4), Irrigation at 3/4 pan evaporation (T3) and irrigation at ½ pan evaporation (T2). Soil moisture content was measured weekly at l0 cm, 20cm and 30cm soil depth using gravimetric methods. Biomass yield was determined weekly throughout the growing season until maturity. Other agronomic measurements include plant height, root depth and leaf area index (LAI). Meteorological data were taken at the experimental site. It was observed that treatment T4 had the best result in terms of plant height, LAI, and total biomass yield of 1.95 ton/ha during second planting season. crop water use (determined by water balance method) differed among treatments and the amount corresponded to the magnitude of total water applied. The highest amount of crop water use (ET) was 4.1 mm/day and 7.9 mm/day during the two seasons and was observed at 14 DAE at the 4th WAE, the treatment T4 gave the highest value of water use efficiency (WUE) of 0.5 kg/ha-mm of water. This was observed during the second planting season. However, on considering the overall result, it is proposed that amaranths will yield maximum result when water is applied at the rate of 3/4 pan evaporating during emergence, at full evaporation during the maximum vegetative cover and at 1/2 pan evaporation during the maturity stage. Irrigation at full evaporation improved crop performance by increasing agronomic attributes such as plant height, leaf area and biomass yield. Crop water use (ET) differed among treatments and it reflected an influence of irrigation water application and hence soil moisture availability for crop growth and yield. The highest water use (4.1 mm/day and 7.9 rnm/day) was observed at 14 DAE during the first and second planting seasons. The highest WUE (0.5 kg/ha mm of water) was obtained form irrigation at full pan evaporation at the 4th WAE during the second planting season. It could be concluded that to obtain maximum yield, amaranths should be supplied with water at 3/4 of pan evaporation during the emergence, at full pan evaporation during the maximum vegetative cover and at 1/2 pan evaporation during the maturity stage of the crop. The results obtained in this study would be useful in water stress studies, which can be used for irrigation scheduling and yield prediction 84p.:ill.;30cm

2001-11-01T00:00:00Z