Journal Articles

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Start date: 2011End date: 2019

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    Awareness and Use of Current Awareness Services by Users of Three University Libraries in North West Nigeria.
    (JAIST is a publication of the Information Technology Group with institutional affiliation to the Library Department of the University of Nigeria, Nsukka., 2018-04-03) Mohammed M. Kpakiko, Hashimu Suleiman, Fati Abubakar
    Purpose: This paper looked at the extent Current Awareness Services have influenced the use and access to information resources by the users of university libraries in North-Western Nigeria. Design/Methodology/Approach: Descriptive survey research approach was used. A Sample of library users from three university libraries in North West Nigeria was used. Copies of the Questionnaires were administered on the library users (students and staff) to collect data on the awareness and use of current awareness services in the library. The data collected were analyzed using table and simple percentage calculation. Findings: It was found that, users visit the library daily in order to read, carryout research and update their knowledge. Again, list of new arrivals, shelve display, library bulletin newspaper and email and bulletin board services were the most available current awareness services in the library and mostly used. Implication: The paper suggested for the adoption of digital technologies in university libraries that will enhance timely distribution of information needs of the users. The study therefore, encourages the library users and to acquire ICT skills that will enable them adequately utilize digital current awareness service tools. Originality/Value: The originality of this study is found in its perspective on the need to give more publicity and awareness. Therefore, email and mobile SMS services should be introduced that will distribute current information to library users on time.
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    Efficient Customer Service: A necessary skill for a proactive, responsive and relevant 21st century librarian.
    (A Publication of Nigerian Library Association, Benue Branch, 2018-12-15) Goshie, R. W., Abubakar, Fati., & Jibril, H.
    The purpose of this paper is to sensitize librarians on contemporary realities and the importance of inhibiting the principles of efficient customer service in dealing with library customers as a strategic tool in ensuring that librarians remain proactive, responsive and relevant in the ever-changing information landscape. Literature reviewed brought to the fore issues and trends that are challenging the conventional roles of librarians in the 21st century such as transition to digital content, computer that is almost replacing librarians’ roles, and others. Possible solutions were carefully articulated such as provision of librarians with the requisite technological literacy needed for a 21st century library service. The paper concluded with the remark that, regardless of changes in technology which has adversely affected the library’s capacity, and the dynamic change in information seeking behavior of our users which has redefined the concept of service provision, by cultivating and displaying the outlined skills for efficient customer service, library remains relevant and the role of librarians in the digital age indispensable.
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    Preservation of Information Resources in Academic Libraries in Niger State, Nigeria
    (Benue Journal of Library, Management and Information Science (BJLMIS) A publication of NLA Benues, 2018-12-18) Fati Abubakar, Musa Imam Shekarau & Murjanatu Abdulhamid
    This study investigated preservation of information of resources in academic libraries in Niger State, Nigeria. A case study design was adopted for the research. Purposive sampling technique was used to select 35 respondents from a population of 297 library staff in all the twelve academic libraries in Niger State. Semi structured interview guides were used to collect data from respondents, while field notes guide was used to record data in respect of respondents responses. The instruments used for the study were questionnaire and interview. Data collected were tabulated and analysed using simple frequencies and percentages. Findings revealed that the common methods of preservation of information resources in academic libraries in Niger State included repairs, binding and environmental control. The findings also showed that there were policies guiding the operations of the academic libraries in Niger State, but they did not have insurance covers. In respect of effectiveness of the methods in use, the findings showed that repairs, binding, environmental control was effective in all the academic libraries. The fact that the academic libraries in Niger State paid more emphasis on printed materials, with less use of digital preservation methods and electronic systems, indicated that the libraries were yet to embrace the opportunities offered by technological advancement for such activities. In view of the findings, it was recommended that libraries should endeavour to have written laws on all aspects of preservation of information resources, upgrade and maintain facilities such as binderies air conditioning systems, fire prevention equipment etc, including the adoption of digital preservation methods. etc. information Resources
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    Effects of Generating Plant Noise on Humans and Environment
    (International Journal of Engineering Trends and Technology (IJETT), 2016-05-26) Babawuya, .A.; Bori Ige; Bako, .M. D.; Yusuf, .S. A.; Jibrin, .A.; Elkanah, .A. J.; Mohammed, .A.
    Noise measurements were taken in the morning, afternoon, evening, and night to determine the extent of noise pollution all over the city. A calibrated sound level meter was used to measure the generating plant noise. The equivalent sound levels (Leq) were measured at 20 different locations, between 8 a.m and 10 p.m. High noise levels were observed throughout the town. The data obtained was analysed and the results then compared with world health organization standard. The noise equivalent level varied between 99.4 and 83.2 dBA. The results of the study established the fact that generator noise levels are more than the acceptable limit of 60 dBA, thatis the daytime government prescribed noise limit for residential and commercial areas. The reaction of the residents to generating plant noise was monitored with a total of 300 questionnaires. The results of the interview questionnaire revealed 97% of the people classified the noise in their street as very high while 3% says it is low. And also the respondents answered that noise bother them more in day and night while 11% of the respondents say it is only in the night only. The main outcomes of exposure to generating plant noise were loss of sleep, hearing loss, annoyance and disturbance.
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    A STUDY OF THE EFFECT OF DEGRADATION ON INDUSTRIAL GAS TURBINE PERFORMANCE
    (Journal of Science, Technology, Mathematics and Education (JOSTMED), FUT Minna, 2016-03-15) Nasir, .A.; Usman, .S. A.; Mohammed, .A.; Muhammed, .S. N.; Bori Ige
    Component degradation is a very common problem associated with operating industrial gas turbines. The major components so affected by this phenomenon are compressor, combustor and turbine blades. This paper studied the effect of degradation on gas turbine performance. The study involved the analyses of operating parameters effects for Siemens gas turbine engines model SGT5 – 2000E coded GT11 and GT21 in the power stations at Geregu power stations. The parameters considered were ambient temperature, exhaust temperature, combustion chamber pressure and turbine entry temperature, GT11 is degraded while GT21 is newly installed engine both in the same location at Geregu I and II power stations in Ajaokuta, Kogi State in the North central part of Nigeria.Simulations were carried out using Gas turb 11 simulation software, results of engine performance parameters were compared and it was revealed that due to component degradation, the turbine entry temperature (TET) increased to 1049.67oC, the fuel flow increased by 8.49% and power fell by 7.14%. Consequently, the cost of power loss is one hundred and eighty-seven million, one hundred and eleven thousand, seven hundred and fifty-three naira ninety-two kobo (₦187,111,753.92k) over a period of one year for the degraded gas turbine.
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    ENERGY UTILIZATION, CONSERVATION AND AUDITING IN NIGERIA CEMENT INDUSTRY
    (Journal of Science, Technology, Mathematics and Education (JOSTMED), FUT Minna, 2016-03-15) Nasir, .A.; Bori Ige; Enitilo, .T.; Azeez, .O. S.; Muhammed, .A.
    Manufacturing of cement is identified as one of the most energy intensive industries in the world. Therefore, there is a need for its effective and efficient utilization and hence conservation. In order to produce clinker, rotary kilns are widely used in cement plants. This study takes a look at the energy source, utilization and conservation in a Cement Company in Nigeria. The company’s energy source was determined, utilization pattern investigated and possible areas of energy conservation considered. The rotary kiln of this plant where the large form of energy is consumed has a capacity of 6000 tonnes per day. It was found that about 20% of the total input energy was being lost through hot flue gas (5.09%), cooler stack (12.4%) and kiln shell (2.61% convection and radiation). To recover some of this heat energy loses, a feasible energy management method was introduced and discussed. Findings showed that approximately 4MW of electrical power could be recovered through conservation and proper energy management.
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    Case Hardening of Mild Steel Using Animal Bone, Charcoal and Sea Shells as Carburizers
    (Nigeria Journal of Engineering and Applied Sciences (NJEAS), FUT Minna, 2016-08-24) Muriana, .R. A.; Bori Ige; Abubakre, .O. K.; Abu, .J. O.; Sani, .C. E.
    Samples of Mild steel were treated in carburizing media which included animal bone, wood charcoal and sea shells at varied temperatures. Micro structural analyses, chemical composition tests, and mechanical properties tests were carried out on the carburized samples. Results indicated that the treated samples could be used in local production of some engineering components such as gears in place of imported components where hardness is considered together with toughness. The case hardening of the mild steel with charcoal granules gave the highest carburization of 0.905% on the surface with the highest hardness value of 69.3 HRA.
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    Pedestrian-level Air Flow and Ventilation around Adjacent Buildings in Step-up Configuration
    (Nigeria Journal of Engineering and Applied Sciences (NJEAS), FUT Minna, 2017-08-24) Ayo, .S. A.; Mohd-Ghazali, .N.; Bori Ige
    The outdoor air ventilation impact of a taller building at a downwind location in a layout of two adjacent buildings in different step-up configurations is presented in this paper. The criteria for ventilation assessment adopted are dimensionless parameters called velocity ratio (VR) and air ventilation rate (AER), and the parameters examined are the separation distance (WV) between the buildings and the ratio of height of downwind building to that of upwind building, herein referred to as building height ratio (HR). A three-dimensional (3-D) numerical simulation employing the Computational Fluid Dynamics (CFD) technique based on Reynolds-Averaged Navier-Stokes (RANS) equation and Realizable k-ε turbulence model was used to study the turbulent flow field around various full-scale size configurations of the adjacent buildings. Results show that while VR generally increases with height ratio, it increases with separation distance until a certain maximum distance which depends on the height ratio. AER on the other hand generally increases with height ratio, but decreases with separation distance. The results indicate that greater air motion is induced at the pedestrian level as the height of the downwind building increases, and greater rate of air flow is exchanged between the buildings cavity and the surroundings. Based on the VR results obtained for the building configurations examined, a separation distance of between 18 m and 30 m is proposed for configurations 2.0 ≤HR≤ 3.0, and between 18 m and 24 m for configurations HR = 1.0 and 1.5, to maximally invigorate the pedestrian-level air flow.
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    Enhancing the Cavitation Erosion Resistance of 304 Stainless Steel by Laser Surface Alloying with Molybdenum
    (Nigeria Journal of Engineering and Applied Sciences (NJEAS), FUT Minna, 2017-08-24) Bori Ige; Muriana, .R. A.; Man, .H. C.; Okegbile, .O. J.; Ayo, .S. A.; Babawuya, .A.
    Type 304 stainless steel is the most versatile and widely used austenitic stainless steel, it accounts for more than 50% of all stainless steel produced. It is commonly used in liquidhandling equipment, house hold utensils and lot of applications in almost every industry. However, poor surface properties in terms of wear resistance, due to its low hardness made it susceptible to cavitation erosion, which is a usual mode of degradation of engineering parts in contact with fast-flowing or vibrating liquids. This work is an attempt to improve the cavitation erosion resistance of 304 stainless steel by laser surface alloying with Molybdenum (Mo). This was made possible by using a 2kW continuous wave Nd-YAG laser. The alloying powder was placed in advance on the surface of the substrate by pasting to a thickness of 0.1mm, followed by laser beam scanning at an optimal speed of 20 mm/s and 30 mm/s (each at a beam diameter of 3mm) and a laser power of 1.2kW, in order to achieve surface alloying and modified surfaces were obtained by 50% overlapping of adjacent tracks. The microstructure and composition of modified layer were also studied for more insights. Ultrasonic induced vibrator tester was used to carry out cavitation erosion test. Cavitation erosion resistance (Re) was observed to have increased with the Mo content in the alloyed layer, the Re of the specimens modified with Mo was improved by a factor of 1.4 (for v = 20 mm/s) and 1.5 (for v = 30 mm/s), when compared with that of the as-received 304 stainless steel substrates.
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    DESIGN AND CONSTRUCTION OF A SMALL SOLAR POWERED AIR BLOWER FOR CHARCOAL FIRED FURNACE
    (JOURNAL OF THE NIGERIAN INSTITUTION OF MECHANICAL ENGINEERS, 2019-09-30) Muhammad, .A. B.; Nasir, .A.; Ayo, .S. A.; Bori Ige
    In Nigeria almost all the local foundry shops rely on the manually operated blowers for supplying air for the combustion of the charcoals to melt metals. This manually operated blower has showed that much man-hour is required during firing as one laborer is dedicated to driving the rotary blower. This is labourous and reduces the rate of productivity of the enterprise. Therefore, it is necessary to find easier ways of supplying the energy required for the combustion so as to increase productivity. A solar powered blower is designed and constructed in this work. The performances of manually operated and solar powered air blowers are compared. Performance results of the manually operated air blower showed that it takes about 67 minutes and 42 minutes to melt 4kg of aluminum and zinc respectively. On the other hand, for the solar-powered air blower, it takes about 30 minutes and 17 minutes to melt 4kg of aluminum and zinc respectively. This indicates that the solar-powered air blower takes a shorter time to melt metals when compared with the manually operated air blower. In addition, the solar powered air blower eliminates the laborious aspect of supplying energy for melting metals and also reduces the times spent in metal melting process.