November 2014

Effect of industrial tannery effluent on soil fungi and fungal protease/cellulase activity on modified rice husk /modified sawdust medium (MRHM/MSDM)

The release of unprecedented tannery effluents into agricultural fields constitutes danger to land fill and nutrient cycling as well as organic matter processing. In the present study, tannery effluent discharged soil (polluted landfill), undischarged soil (control) and effluent discharged (waste) were collected from the surrounding areas of tannery industry. The physico-chemical and biological properties and soil...

Author(s): S. D. Emmanuel, I. K. Adamu, S. Y. Mohammed, A. Ejila, M. I. Ja’afaru, Y. Amos, M. Bobai and O. Agbor

November 2014

Retrofitting industrial in electrical motor type: A matter of energy efficiency and reduction of maintenance

This report aims to identify, in terms of economic and technical aspects, an electric motor whose characteristics meet a proposed replacement of a direct current (DC) motor in an aluminum extrusion plant, whose preventive maintenance has in the last years, the problem of technical and operational orders. Data relating to the preventive maintenance of motors in operation were used to estimate the performance of an...

Author(s): Claudeir Alexandre Silvestre, Paulo Henrique Nicoletti and Marcio Abud Marcelino,

November 2014

Evaluation of the drying rate constant, drying efficiency, nutrients and sensory qualities of dried vegetables using solar dryer and open-air sun drying methods

Utazi (Gongromena ratifolia) and Nchuanwu (Occimum americanus) were dried using solar dryer and open- air sun drying methods. 200 g of each sample was used. The weight losses were used to determine the reduction in moisture content. Drying was assumed to have taken place in the falling- rate period, which enabled the use of only one drying rate constant, K. Graphs of ln(M0-M) versus time were used to obtain the drying...

Author(s): Onoja U. S., Iroegbu J. C., Akubor P. I. , Njoku Ivoke, Ekeh F. N., Ejere V. C., Eyo J. E., Attama C. I. and Onyishi G. C.