http://localhost:8080/xmlui/handle/123456789/320 Published Journal Articles from the department. 2026-04-05T21:14:50Z http://localhost:8080/xmlui/handle/123456789/2742 THIN-LAYER DRYING CHARACTERISTICS OF CASSAVA (MANIHOT ESCULENTUS) EMMANUEL, Paul Amade ABSTRACT This paper describes an experimental investigation of thin-layer drying characteristics of cassava for a two-day period vis-à-vis a flat-plate dryer, rock-bed dryer and the traditional open air drying layouts respectively. The experiments were carried out at Sokoto Energy Research Centre (SERC) sunshine hours of diffuse insulation ranging from 240.6 to 977.9W/m2, relative humidity ranging from 36.9 to 82.0%, ambient temperature ranging from 35.6 to 66.7oC and 35.4 to 69.3oC respectively. The experiments started at 8:00am to end at 5:00pm local time on each day of two days of exposure conditions. Microbial tests revealed neither fungi nor bacterial attacks. Proximate analysis of the dried cassava showed that initial moisture content of the dried samples range between 5.0 to 5.5% contents, ash content ranging between 1.0 to 3.5% contents, fat ranging between 2.0 to 7.0%, crude fiber ranging from 1.4 to 4.4%, crude protein ranging 2.36 to 5.53% and carbohydrate ranging from 84.34 to 88.24% while the fresh samples consisted of ranging from 59.0 to 66.0% 2008-01-01T00:00:00Z http://localhost:8080/xmlui/handle/123456789/2739 APPLICATION OF TWO-STEP CONTINUOUS HYBRID BUTCHER'S METHOD IN BLOCK FORM FOR THE SOLUTION OF FIRST ORDER INITIAL VALUE PROBLEM EMMANUEL, Paul Amade The two steps Hybrid Butcher’s Method was reformulated for applications in the continuous form. The process produces some schemes which were combined in order to form an accurate and efficient block method for solution of ordinary differential equations (Ode’s). The suggested approach eliminates requirements for a starting value and its speed proved to be up when computations with the Block Discrete schemes were used. The order of accuracy and stability of the block method is discussed and its accuracy established numerically. 2013-07-01T00:00:00Z http://localhost:8080/xmlui/handle/123456789/2738 HYDROCHEMICAL ANALYSIS OF WATER QUALITY IN GOSA AND DEI-DEI AREA OF ABUJA, NORTHCENTRAL, NIGERIA EMMANUEL, Paul Amade The geology of Gosa and Dei-Dei, in Abuja, therefore, makes the groundwater conditions in the area very unpredictable, and so jeopardizes the fulfilment of the water supply needs of one of the fastest growing cities in Nigeria. Vertical Electrical Sounding (VES) was carried out at two locations within and around Gosa and Dei-Dei area to detect the depth to the aquifer and water quality investigation. The study involves the hydrochemical characterisation of waters to ascertain their physico chemical, quality and suitability for domestic purposes. The borehole depths measuring 62m at Gosa with low yield and 70m at Dei-Dei with good yield of static water level of 4-6m thick were analysed for their cations and anions contamination. In Gosa, the chemical analysis was within the limit of WHO standard. Consequently, at Dei-Dei, some results of the chemical; Mg2+ (74mg/l) Ca2+ (86mg/l), Total hardness (160mg/l), Phosphate (1.3mg/l), Fe (0.78mg/l), Mn (0.731) were above the limit for drinking water. The contaminant could be some precipitation, transported through a typical aquifereous medium. Petrophysically, the caves or fractured openings through different rock types maybe in solution as ion, molecules and colloids or may have acquired their chemistry from the IJERTV2IS120181 basement rocks, dissolution of Silicate, Nitrate and cation exchange reactions. The contamination detection above WHO standard, therefore consider the water not suitable for drinking. Recommends further work for radionuclide in groundwater. 2013-12-01T00:00:00Z http://localhost:8080/xmlui/handle/123456789/2737 APPLICATION OF ELECTRICAL RESISTIVITY SURVEY FOR LOCATING GROUNDWATER AQUIFER AT MAISANDARI WARD DAMATURU YOBE STATE EMMANUEL, Paul Amade This study investigates ground water source using resistivity method at Maisandari ward in Damaturu. A terrameter WDDS-2 was used to acquire resistivity data on two profiles each having a Vertical Electric Sounding (VES) point utilizing Schlumberger configuration at maximum spread of AB/2 200m. The data acquired were processed and interpreted using IXID computer software to give information on the geo-electric layers, the thickness of the layers, the resistivity of the layers and information about the depth. The findings revealed seven-layer model on VES1 and six-layer model VES2.The values of resistivity for each layer was inferred from standard resistivity values for soils found within the geological area. The inference deduced shows the layers investigated consist of top soil, clay, sandy/clay sand and laterite/sand. Profile (VES1) shows a potential aquifer for groundwater at a depth 160 m with formation resistivity value is 359.28Ω-m, while the second profile (VES 2) indicates potential ground water body at a depth of 160 m with formation resistivity value at 130Ω-m. Conclusively, the use of geophysical resistivity method can be applied to locate groundwater that could be exploited to provide sustainable water needs of man. 2022-01-01T00:00:00Z