3. iii
From the Editor’s Desk
The Editorial Board of AZOJETE is happy to publish the eleventh volume of our
Journal. This was made possible by the enormous contributions from our reviewers
around the country and all over the World.
This volume is a promise fulfilled as it continued to showcase articles from the fields
of Agricultural and Biological Engineering, Civil Engineering, Computer
Engineering and Electrical and Electronic Engineering. Other areas represented are
Mechanical Engineering and Quantity Surveying. Contributors from all fields of
Engineering, Science, Technology and Environment are hereby encouraged to submit
their articles to the Journal as the Editorial Board has put in place a mechanism
aimed at ensuring a speedy assessment of every paper that is submitted for
publication. The AZOJETE is now available online in its website:
www.azojete.com.ng. We encourage our Readers and Contributors to visit our
website and read and download articles since our Journal is operating on Open
Access. Our call for papers is out and available online.
At the moment, articles are already being assessed for the next volume and we intend
to bring out Volume 12 (2016) of AZOJETE before the end of the year.
We wish to assure our numerous contributors of articles from all fields of
Engineering, Technology and Environment that our Journal will soon be indexed in
major Scientific Data bases.
Finally, we would like to acknowledge the moral and financial assistance rendered to
the Editorial Board by members of the Faculty Board of Engineering.
Thank you.
Dr. Ndubisi A. Aviara
(Editor-In-Chief)
4. iv
ARID ZONE JOURNAL OF
ENGINEERING, TECHNOLOGY AND ENVIRONMENT
Volume 11 August, 2015
Scope
Arid Zone Journal of Engineering, Technology and Environment (AZOJETE),
published annually, is an interdisciplinary Journal covering all aspects of
engineering, technology and environment with particular reference to the arid regions
of the world.
Annual subscription excluding postage
Copies Nigeria Overseas
1 - 9 N3,000.00 each $25.00 each
10 or more N2,500.00 each $20.00 each
Postage shall be charged separately at the current rates. Copies may be obtained from
the Business Manager, AZOJETE. All cheques are to be made payable to AZOJETE,
Maiduguri.
Publication charges and offprints
AZOJETE charges as follows:
Nigeria Overseas
Publication charge per accepted paper N15,000.00 $100.00
Upon submission of paper, the author is expected to pay a non-refundable processing
fee of N5,000.00 only per paper.
Authors will receive a copy of the Journal and five off-prints of their papers.
Instructions to contributors
Arid Zone Journal of Engineering, Technology and Environment (AZOJETE)
welcomes contributions in the form of original research papers (theoretical and
experimental), book reviews as well as short communications from all parts of the
world, with particular reference, but not exclusive, to arid regions. Submission of an
article is based on the understanding that it has not been published elsewhere, or
under consideration in any other journal. All contributions will be critically reviewed
by expert referees on whose advice the Editorial Board will accept, reject or return
articles to authors for modification or revision. Articles should be typewritten
double-spaced on one side of A4 paper. Authors are to upload their articles online via
www.azojete.com.ng. Tables and figures should come immediately after being cited
in the text.
5. v
Arrangement
Papers should normally be divided into Abstract, Introduction, Materials and
Methods, Results and Discussion, Conclusion, Acknowledgements (if any) and
References.
The title should be concise and informative. Name(s) and affiliations of authors
should be provided. Where there is more than one author, the correspondence author
should be indicated.
The abstract should not be more than 350 words and should state clearly the
objective(s) of the study, a concise description of the experiment(s), major
observations, results and conclusions. The Harvard system of referencing should be
used and the references listed alphabetically at the end of the paper. The following
format should be used for journal articles, books and chapters in books, reports,
conference proceedings and from the internet respectively:
Umar, B. 1997. The role of public and private tractor hiring units in agricultural
mechanization - a case study from Adamawa state, Nigeria. Outlook on
Agriculture, 26(1): 35-38.
Phillips, RE. 1981. Farm Buildings – From Planning to Completion. Doane –
Western, Inc. St. Louis, Missouri.
Kirkby, MJ. 1980. Modelling water erosion processes. In Kirkby, M.J. and Morgan,
R.P.C. (eds), Soil erosion, pp. 183-216, Wiley, Chichester.
Yang, Q. 1991. Blemish detection in fruit and vegetable grading with computer
vision. Divisional Note DN 1610. Silsoe: Silsoe Research Institute.
Keating, BA., Wafula, BM. and Watiki, JM. 1992. Development of a modelling
capability for maize in semi-arid eastern Kenya. In: Probert, M.E. (ed ). A
search for strategies for sustainable dryland cropping in semi-arid eastern
Kenya. Proceedings of a symposium held in Nairobi, Kenya, 10 - 11
December 1990. ACIAR proceedings no. 41, 138p.
Wallace, TB. and Cox, WE. 2002. Locating information on surface water availability
in Virginia.
http://www.rappriverbasin.va.us/studies/locatingsurfacewaterinfo.doc
accessed on 10 October, 2004.
6. vi
ARID ZONE JOURNAL OF
ENGINEERING, TECHNOLOGY AND ENVIRONMENT
Volume 11 August, 2015
Contents
Evaluation of solar chimney power plant in semi-arid region of Nigeria
Ngala, G.M., Oumarou, M.B., Muhammad, A.B. and Shuwa, M...............…………....1
A CFD Analysis of a micro horizontal axis wind turbine blade aerodynamics
Ngala, G.M., Shuwa, M., Oumarou, M.B., and Muhammad, A.B.. ………………….13
Moisture-dependent physical properties of àbèèrè (picralima nitida) seeds
Aremu, A. K. and Duduyemi, A. S ……………………………………………………...... 24
Design and development of pneumatic mechanism for primary motions of ‘Aso-Oke’
weaving machine
Ismail Olawale Saheed, Salau Tajudeen. A. O., and Alaka Abdul-Wasiu...…….……37
Implementation of improved aes image encryption in VB.NET
Mala U.M.B., Ibrahim M.H., Kassim S.O. and Terab M.A.…..…...…..………….…...49
Some engineering properties of three varieties of groundnut pods and kernels
Muhammad, A.I., Isiaka, M., Fagge, A.A., Attanda, M.L. Lawan, I. and Dangora,
N.D.………………………………………………………………………………………...….61
Risk factors influencing construction procurement performance in nigeria
Dahiru, Alhassan and Aminu Muhammad Bashir………..……………………...……..76
Appraising factors influencing construction engineering cost estimates
Dahiru, Alhassan .............................................................…..……………………….…88
Design of a lock-in amplifier micro-ohmmeter using proteus VSM
Dibal, P. Y. and Mshelia, D. E.…………………………………………...…………..….102
Hybrid design, modelling, and simulation of a 4-bit binary multiplier using vivado,
simulink, and kintex-7 FPGA
Dibal, P.Y. and Ngene, C.U...…………………………………………………………….112
Development and performance evaluation of fluted pumpkin seed dehulling machine
Odewole, M.M., Adesoye, O.A., Oyeniyi, S.K. and Isiaka, A.O………………………118
