Research Papers/Topics in Agricultural Engineering

Impact Damage to Selected Agricultural Produce from South Eastern Nigeria.

ABSTRACTAn Impact Test Apparatus was developed to determine the impact damage and bruise parameters of five fresh agricultural produce, namely: banana (Musa spp), tomato (Lycopersicon esculentum), sweet potato (Ipomea batatas), cassava tuber (Manihot esculenta) and lemon (Citrus limon) using Impact – Drop Height method. A constant impact energy of 0.9J – 4.5J was maintained as drop heights ranged from 0.20m – 1.00m. The bruise diameter, bruise depth, bruise width, bruise volume, bruise ...

Selected Physical And Aerodynamic Properties Of African Breadfruit (Treculia africana) Seeds From South Eastern Nigeria

Physical and aerodynamic properties of African breadfruit (Treculia africana) seeds were studied at four moisture levels: 12.50, 15.00, 17.50 and 20.10% dry base (w.b). As moisture content increased from 10.50 to 20.10% (w.b), the average weight, major diameter, minor diameter, intermediate diameter, geometric mean diameter, arithmetic mean diameter of the seeds ranged from 0.35±0.08 to 0.60g±0.04g, 8.08±0.90 to 10.05±0.60mm, 4.04±0.53 to 5.00±0.10mm, 2.96±0.43 to 4.60±0.40mm, 4.52±0...

CLASSIFICATION AND EVALUATION OF CROP STORAGE STRUCTURES IN WESTERN NIGERIA

AbstractA survey involving the use of questionnaires and personal communication during field trips was carried out in Western Nigeria with the aim of classifying and assessing the efficiency of the existing structures for the storage of crops. Barns; cribs; trenches; platforms; warehouses and silos are among the important. storage structures. The existing structures could be efficient with proper management but a major limitation of most of them is the low unit capacity which is inadequate to...

The Development and Evaluation of a Flat-Type Wooden Incubator

Abstract A flat-type, 60-egg capacity incubator was designed, constructed and tested. The incubator differs from existing designs in that the cabinet was made from a 3-ply, 4mm thick interior grade plywood to reduce cost and at the same time enhance heat insulation. Also, two domestic kerosene lanterns were provided to supplement heat generation by three 40 W electric bulbs during electricity outages as commonly experienced in Nigeria. When tested with 30 eggs of a commonly sold chicken ...

Design, Construction And Perfromance Evaluation Of A Drip Irrigation System

ABSTRACTA gravitational drip Irrigation system was designed and constructed using available materials; and tested for the use of small scale farmers.

EVALUATION OF SOME FARM STRUCTURE IN SOUTH WESTERN NIGERIA

ABSTRACT A survey involving the use of questionnaires, personal communication, physical observation and photographic recording was undertaken in South western Nigeria comprising of Ekiti, Ogun, On do, Osun and Oyo states to identify the farm structures popularly used; materials used in their construction, their durability and maintenance culture adopted by the users. Farmhouses, cribs, barns, platforms, warehouses, silos, pens, yards and sheds, deep litter houses, palm fronds woven bask...

PROBLEMSAND PROSPECTS OF METAL SILOS FOR GRAIN STORAGE IN WESTERN NIGERIA

ABSTRACTA survey involving the use of structured questionnaires and personal communication was carried out in Western Nigeria to ascertain the type and extent of use of silos for the storage of grains.

DETERMINATION OF MODULI OF ELASTICITY AND RUPTURE AND ENERGY CONSUMPTION OF THE OIL PALM TRUNK

ABSTRACTThe moduli of elasticity and rupture and the energy to cause failure under impact load of the oil palm trunk were determined.

Assessment of Injuries in Small Scale Sawmill Industry of South Western Nigeria

ABSTRACTBody injuries sustained in sawmill industry as a result of mill site activities in Ondo, Oyo and Osun states in the Western part of Nigeria was investigated. Nigeria Sawmill Industries are essentially distributed between small, medium and large scale in the proportion of 81%: 13%: 6% respectively (RMRDC, 2003). A survey involving the use of questionnaire, participatory approaches, on-the-spot assessments and interviews were used as tools for investigation. A total of 140 injury c...

Determination of Discharge Co-efficient of Rectangular Side Weirs

ABSTRACTThe characteristics of flow over side weirs are taken into consideration to verify the discharge coefficient for subcritical flow conditions under the assumption of constant specific energy. The main channel discharge, length of weir crest and sill height of the weir are treated as controlled variables. The discharge coefficient Cd is found to depend 011 the Upstream Froude No 171 and also on the ratio of sill height to upstream flow depth S/Yl . Simple linear regression analysis...

THE USE OF LOCAL BUILDING MATERIALS FOR THE CONSTRUCTION OF FARM STRUCTURES IN WESTERN NIGERIA

ABSTRACTA Survey of the pattern of usage of building materials in the small - to - medium farms in Western Nigeria was undertaken. Wood was the commonest construction material in use, followed by earth products and natural fibres. Decay,and weathering of natural fibres including timber; arid the erosion of earth products were the major problems experienced with their uses. Treatment of the natural products before use was found wanting. Adequate seasoning and preservative treatment of nat...

A Continuous Flow MultiStage Grinder

ABSTRACTA continuous flow multi-stage grinder for grinding grains and other applicable food products comprises the Hooper(001) which receives the grain of food item to be milled and channels it to the mill housing (002) to be milled in stages. The conveyor(003) carries the milled product from one stage of grinding to the next. Contained in the mill house at every stage the grinding pIates (004). The finally ground product comes out for collection through the discharge Channel (005). Grind...

A Survey of Livestock Strcutures in South Western Nigeria

ABSTRACTA survey involving the use of structured questionnaires and personal communication was undertaken in South Western Nigeria to identify the livestock in the area, and their housing methods.. Chicken, pigs, rabbits, goats, sheep and cattle were the  major animals found while the housing structures include baskets, battery cages, deep litter houses, cages, hutches, eggs, sheds and yards. In about half of the sites surveyed animals kept were not provided with housing, while in other pl...

The Development of a Multi Purpose Wet Food Sieving Machine

ABSTRACTWet sieving is still a manual operation in tropical crop processing. It is a time consuming operation. Most of the existing wet sieving machines are available in large scale industries and they are too sophisticated to operate and maintain by local processors. Therefore, a motorized starch extracting machine, based on shaking mechanism was designed, fabricated and tested to solve the problem associated with sieving of starch and other agricultural crops in Nigeria. The machine consist...

PRODUCT TEMPERATURE RESPONSE OF A LOCALLY DEVELOPED EXTRUDER TO DIFFERENT EXTRUSION CONDITIONS

ABSTRACTIn this study, the product temperature response of a single screw extruder developed locally was investigated for the extrusion process of the flour and starch of maize and cassava which are grown in Nigeria in large quantity but yet underutilized. These were compared with wheat flour which is commonly used for the production of alimentary pastes in a factorial experiment in completely randomized design A maximum temperature of 150oC per 30 minutes was attained through viscous dissipa...


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