Vol. 17 No. 4 (2021)

J. C. Edeh, C. P. Nwadinobi, E. C. Obetta

429-438

Development and Deployment of Quadcopter in Silos’ Inspection and Surveillance

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A. Mohammed, S. Dan’Azumi, A. A. Modibbo, A. A. Adamu, Y. Ibrahim

439-452

Rainfall-Runoff Modeling for Challawa and Jakara Catchment Areas of Kano City, Nigeria.

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A. A. Shuaibu, A. I. Mohammed, U. Hassan, B. H. S. Amartey, S. A. Wada, A. Mohammed , A. M. Rimi

453-468

An Experimental Study on the Performance of Bituminous Concrete Mixtures with Silica Sand as Filler Replacement

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A. Zubairu, A. S. B. Gimba, A. M. Abdullahi

469-480

Production and Characterization of Biodiesel from Hybrid Feedstock of Jatropha curcas and Thevetia peruviana Seeds Oil

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P. I. Obi, C. S. Ezeonye , E. A. Amako

481-494

Applications of Various Types of Circuit Breakers in Electrical Power Systems: A Review

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I. A. Araga, A. I. Afolayan , A. E. Airoboman

495-504

State Estimation of the Nigerian 330kv Transmission Network using the Weighted Least Square Optimization Technique

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W. A. Raheem, O. O. Akinyemi, H. O. Adeyemi, O. A. Adeaga, O. G. Olasunkanmi

505-516

Modelling the Safety Level of the Construction Industry in Southwestern Nigeria

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M. Yusuf, M. Halilu, K. B. Filli

517-526

Influence of Extrusion Process Conditions on the Residence Time and Throughput of a Twin-Screw Extruder Using Full Factorial Experimental Design

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O. A. Ibrahim, M. M. Afodun, F. G. Mije, T. Ako

527-534

Optimisation of Cover Thickness in Tyre Fibre Concrete under Elevated Temperature

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E. S. K. Mensahn, S. A. Wada, L. Lugeiyamu

535-546

Structural Evaluation of Conventional and Modified Flexible Pavement Performance

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J. J. Alasa, A. U. Bashir, M. Mustapha, B. Mohammed

547-554

Experimental Study on the Use of Banana and Pineapple Peel Waste as Biofertilizers, tested on Hibiscus Sabdariffa Plant: Promoting Sustainable Agriculture and Environmental Sanitation

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M. A. Bawa, O. B. Umaru, M. Abdulwahab, T. Balogun, W. S. Abdulazeez

555-560

Mitigation of the Wear Failure of Ti-6al-4v Dental Implant Using Natural and Artificial Ageing Treatment

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Marco Aurélio Calixto Ribeiro de Holanda, Willames de Albuquerque Soares, Alexandre da Câmara Lima Araújo de Souza, Diogo Botelho Corrêa de Oliveira

561-568

Green roofs: an alternative for the reduction of surface runoff in the city of Recife, PE

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M. Mustapha, J. J. Alasa, A. U. Bashir, B. Mohammed

569-574

Study on the Use of Banana and Pineapple Peel Waste as Biofertilizers: Enhancing soil fertility, Promoting Sustainable Agriculture and Environmental Sanitation

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