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Item AGRICULTURAL INFORMATION SERVICES PROVISION BY LIBRARY STAFF OF COLLEGE OF AGRICULTURE LIBRARIES IN NIGER STATE, NIGERIA(Publication of the Depaprtment of Library and Information Science, University of Nigeria Nsukka, 2020-04-04) Adamu, Mohammed Saba (CLN, MNLA, CTN), Kasim, Muhammad Bala (CLN), Adamu, Mahmud (CLN)and Abubakar, Fati (CLN)This study investigated the agricultural information services provision by library staff of college of agriculture libraries in Niger State, Nigeria. The research design adopted for this study was descriptive survey research design. The population covers the staff of the libraries. The instruments used for data collection were checklist containing items on availability of agricultural information services and questionnaire containing items on methods of providing of agricultural information services and strategies to enhance provision of agricultural information services and strategies for enhancing the provision of agricultural information services. Data collected were analysed using frequency counts and percentages. Findings showed that outreach services, bibliographic services, user education, reprographic services, current awareness services (CAS), etc were not provided; ICTs based information provision models such as Web portal, Voice-Based service, Text (SMS) Based service, Self-support online community service, Interactive video conferencing service etc were not in use in the College of Agriculture Libraries in Niger State. The study recommended provision of outreach services, bibliographic services, user education, reprographic services, current awareness services (CAS), etc and make use of latest technologies such as ICTs based information provision models, Smart Phones, CD-ROM, Radio, Television, Computer show case etc to provide agricultural information services to their clientelesItem Modelling of the Temperature Distribution in a Cooled Aeroderivative Gas Turbine Blade with Cooling Holes(2021 Sustainable Engineering and Industrial Technology Conference, Faculty of Engineering, University of Nigeria, Nsukka, Enugu State, 22nd -25th June, 2021. Pp. 171- 176., 2021-06-22) Mohammed, .O.; Nasir, .A.; Bori Ige; Hassan, .B.Aero-derivative gas turbines have found extensive applications, as mechanical drives and medium sized utility power plants on o shore platforms and in petrochemical industries; because of its high operating temperature and pressure, it has a higher e ciency. The high operating conditions of the engine makes it necessary to adopt e ective cooling techniques to achieve the required creep life and attain reliability. This makes the study of the heat transfer within the gas turbine blade essential. This study models the temperature distribution in a cooled aero-derivative gas turbine blade. A numerical model was developed from the interpolation of the Newton’s law of cooling equation and the Alternating Direction Implicit (ADI) scheme. A MATLAB solver was generated for the heat transfer problem based on the selected boundary conditions and designed cooling parameters of model engine: GE PGT25+ aero-derivative gas turbine. It was found that there was e ective heat transfer from the blades to the cooling air with a cooling e ectiveness of 0.5, and the temperature gradient within the blade was within safe operating limits not exceeding the melting point of the blade material. It was deduced that the ADI strategy accurately compute temperature distributions within the blade, in time and space, thereby making it suitable for heat transfer design computations for complex thermodynamic systems like the gas turbine engine.Item Modelling of Thermo-mechanical Fatigue in an Aeroderivative Gas Turbine Blade made of Inconel 738LC(Faculty of Engineering, University of Nigeria, Nsukka, Enugu State, 2021-06-22) Orah, .M.; Nasir, .A.; Bori Ige; Hassan, .B.The hot gas section of the gas turbine engine, especially the blades, are usually subjected to high thermal and mechanical loading, as a result su er thermo-mechanical fatigue. The design process usually involves appropriate selection of the turbine blade materials, it is therefore necessary to carry out thermo-mechanical fatigue studies on gas turbine blades to predict blade life. This study models the thermo-mechanical fatigue on gas turbine blade made of nickel based super alloy IN738LC. Simulink was used to develop thermal models to compute the heat transfer coe cient on the cold and hot sides of the blade, and a stress model to compute the centrifugal tensile stress. The heat transfer coe cients, Reynold’s number, and Stanton number at di erent velocities on the hot and cold section of the blade was obtained. The relationships between the Heat transfer coe cient and the Reynold’s number with the change in velocities at the hot and cold sections of the blade was also established. The stress model computed the centrifugal tensile stress acting on the blade at 31.41GPa.The heat transfer and stress models are therefore necessary for TMF calculations to predict the creep life of the blade to prevent engine failure.Item Analysis of Solar Energy Potentials in Katsina and Sokoto States, Nigeria(Nigerian Institution of Mechanical Engineers (NiMeCHE), 2020-10-20) Irekeola, .B. J.; Bori Ige; Adedipe, .O.; Babawuya, .A.For many years, Nigeria has been facing energy crisis that is hampering her economic development. Energy is one of the key fundamentals for economic development and it is also fundamental to all human activities in this era. In this study, renewable energy potentials in Sokoto and Katsina states were analyzed respectively. Data covering a period of ten years (2007 - 2017) were obtained from the Nigerian Meteorological Agency (NIMET), Abuja, for monthly average daily solar radiation, maximum and minimum temperatures for the two states under investigations. The data were subjected to statistical analysis such as normality test, to examine whether the data is normally distributed using standardized coefficient of skewness, and kurtosis using a 250 Watts by 1.68m square solar panel; the results show that the solar radiations are negatively skewed by a value of -0.6 and -0.43, which makes the two states more reliable during the dry season of the year. The two states have a kurtosis of -1.17 and -1.38 indicating that the bell shape is slightly flatten than normal distribution shape. A linear regression model was also developed to predict the trends in solar radiation for the study area. The results show that Katsina state has a higher reliability (0.86) for solar energy potentials than Sokoto state (0.72).Item Spectral Analyses Study of Boundary Layer Transition Delay with a Finite Compliant Panel(Accra Bespoke Multidisciplinary Innovations Conference, University of Ghana, Legon, Accra, Ghana, 2022-06-01) Bori Ige; Yeo, .K. S.; Bako, .S.Compliant panel or surface has been demonstrated in various theoretical investigations as a promising means in delaying transition further. Within the Blasius boundary layer, wavepackets was initiated at the flow upstream with a pulse-initiated disturbance, and this was allowed to evolve over a finite section of the wall that was replaced by a tensioned compliant panel (CP) on a damped foundation. In order to appreciate the work of the CP in transition delay, direct numerical simulation (DNS) was also carried on the rigid wall (RW) case for comparison purposes. Spectral (Double-Fourier transforms) analyses was performed on the obtained DNS data, and the results showed that, CP case was able to delay transition further, through the strategy of suppressing the linearly growing primary 2-D Tollmien-Schlichting (TS) waves mode, so that resultant wavepacket after the CP location was dominated by a pair of oblique waves. The practical implication of the obtained results show the possibility of drag force reduction over moving vehicles, which will translate to tangible economic gains for the total amount being spent on fuelling especially for those in transportation businesses.Item PARAMETRIC STUDY ON NATURAL VENTILATION: A CASE STUDY OF ENGINEERING CENTRAL WORKSHOP, FEDERAL UNIVERSITY OF TECHNOLOGY MINNA(2nd Faculty of Engineering and Technology Conference (FETiCON 2024), 2024-06-02) Olorundare, .E. F.; Bori IgeThis study provides a literature review on natural ventilation principles, factors affecting airflow, thermal comfort, and the use of Computational Fluid Dynamics (CFD) in building design. The researchers created a detailed 3D model of a workshop and conducted simulations using the DesignBuilder-EnergyPlus software suite. The simulations focused on thermal comfort and were performed on a baseline model with a window-to-wall ratio (WWR) of 30%. The results showed that occupants experienced thermal discomfort for 30.74% of the year, with the remaining 69.26% being comfortable, ranging from "hot" to "slightly warm" sensations. The study then explored the impact of different interventions. Implementing lighting control improved thermal comfort, resulting in a 1.37% increase in the number of hours occupants experienced comfort. The introduction of mechanical ventilation without cooling had a minimal impact on thermal comfort (1.17% improvement). However, when mechanical ventilation and scheduled cooling were combined, there was a significant improvement. The predicted thermal sensation ranged from "slightly warm" to "slightly cool," with most occupants experiencing "neutral" conditions. This strategy increased comfort hours by 14.62% compared to the baseline. While lighting control and mechanical ventilation with fans offered minimal benefits, the combination of mechanical ventilation and scheduled cooling significantly enhanced occupant comfort.Item An Investigation of Partial Shading Effects on Solar Photovoltaic Module Performance Using Infrared Thermography(4th International Engineering Conference (IEC 2022) Federal University of Technology, Minna, Nigeria, 2023-03-21) Jaji, .U. F.; Bori IgePartial shading is detrimental to the performance of a solar PV module. This is because it not only reduces the current and voltage of the module which leads to power loss in the module but may also lead to the formation of hotspots. This work presents an investigation carried out on the cross-comparison of two different PV modules subjected to the same ambient conditions in a tropical hot climatic region, to observe the effects of partial shading on them and if hotspots are formed, determine if they are heightened by the climatic condition of the environment. Different shading patterns and shading due to partial obstruction of direct radiation were considered. Shading was achieved using opaque shading sheets. The results of the experiment showed that the efficiency or performance of these modules is dependent on the type and direction of shading. This implies that as the percentage of shading increases, there is a decrease in power output and ultimately its efficiency. Also, thermal images obtained showed that asides temperature difference between the modules, hotspots formed on the test modules were not magnified by climatic conditions. The Infrared image indicated the likelihood of an internal defect in the control module. Considering the emergence of new solar technologies to improve its efficiency, it’s recommended that a similar investigation under real outdoor conditions be carried out on Perovskite solar cells. Results of the outcome of the findings should be compared to those of the silicon crystalline modules, to determine which solar technologies perform better.Item INVESTIGATION OF MECHANICAL PROPERTIES OF POLYPROPYLENE FILM AS VACUUM PACKAGING MATERIAL FOR DRIED FISH(ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY & ENVIRONMENT (AZOJETE), 2023-09) I. A. Mohammed; O. Adedipe; J. Y. Jiya; A. B. Ayuba; K. T. Obanimomo; K. C. BalaThis study investigated the mechanical properties of three sets of polypropylene packaging films and existing dried fish packaging films and the quality of dried fish packaging in Nigeria... The polypropylene packaging films were produced in three batches A, B and C with thicknesses of 130μm, 150μm and 180μm respectively. The results showed that samples A, B and C had tensile strengths of 48N/mm2, 51.8N/mm2 and 61N/mm2 with Elongation at Break of 690.2%, 729.8% and 760% respectively. Also, the Dart Impact Strength of the samples were observed to be 191g/130μm, 208g/150μm and 231g/180μm respectively. Additionally, samples N and K (existing fish packaging films) had tensile strengths of 34.6N/mm2 and 31.2N/mm2 and Elongation at Break of 279.2% and 267.2% respectively. Furthermore, it was revealed that sample N exhibited better mechanical properties than sample K, while the produced polypropylene packaging films had the best mechanical properties among the samples tested. Using modern systems such as vacuum packaging and modified atmosphere packaging (MAP) techniques, fish packaging and storage was improved. This research is important in light of the significant increase in aquaculture activities in Nigeria due to increased fish production and government intervention in developing the sector, since it offers good moisture barrier properties, transparency and sealability with good cost efficiency and recyclability. It helps to preserve and protect the product’s quality, flavor and shelf life while providing a visually appealing package for consumers.Item A Comparative Analysis of Grillage Method and Beam line Analysis of a Reinforced Concrete Waffle Brifge Deck(Nigeria Journal of Engineering and Applied Sciences (NJEAS), 2022-01-23) Adamu, H. N.; Abbas, B. A.; Abubakar, M.; Yusuf, A.; Kolo, D. N.; Shehu, M.The analysis of reinforced concrete waffle bridge deck using Chanchaga bridge as a case study was carried out with the aid of computer program written in MATLAB. The bridge deck which is a beam bridge was idealized to be a waffle slab. A mathematical model of the bridge was developed using the method of grillages because very complex shapes of problem domain with prescribed conditions can be handled easily using the method. The bridge deck was modelled as interconnection of grid elements. The analysis was carried out using direct stiffness matrix method. The nodal displacements and the resulting static internal forces; shear forces, bending moments and twisting moments of each grid element were determined using the matrix. The results obtained using the method of grillages were then compared with beam line analysis and the former method gave a 10% decrease in forces which will result in the reduction of overall design and materials by 10%.Item EVALUATION OF INFORMATION NEEDS AND BEHAVIOR OF SCHOLARS AND PROFESSORIATES IN LOCAL ENVIRONMENT IN DEVELOPING REGIONS OF THE WORLD(Global Review of Library and Information Science (GRELIS), 2023) Goshie, Rhoda Wusa; Adamu, Abu Ahmed; Isiaka, ChikaPurpose: The aim of this research is to evaluate information needs and behavior of scholars and professoriates in local environment in developing regions of the world Design/ Methodology/ Approach: The paper adopted conceptual approach. Concept of Information seeking, Information behavior for scholars, external environment factors, information needs of scholars, technological environment, literature, sources used by the professoriates and conclusion. Implication: If we look at some other characteristics of science, we see that it is a very social activity, that it requires a huge knowledge base, it provides constant need for information, it produces a fair deal of controversy. There are enormous differences between various disciplines. Originality/Value: In recent years we have seen intensive debates over the changes in scholarly practice caused by increased accessibility of digital resources and tools. This has caused an evident and rapid trend towards the development of different information behaviors by scholars, what information resources they are using, how and when.