FUPRE Journal of Scientific and Industrial Research (FJSIR)

Slip and Induced Magnetic Field Effects on Tangential Hyperbolic Hybrid Nanofluid over a Stretching Wedge with Nonuniform Heat Source

P O OGUNNIYI — Tue, 25 Jun 2024 00:00:00 +0000

Hybrid nanofluid flow analyses have obtained a lot of attention due to their
usefulness as coolants in hybrid electric vehicles, health care, thermal exchange
systems, cancer thermo-therapy, nuclear reactors, microfluidics, aerospace,
acoustics, naval structures and power generation in power plants, This research
investigated the impacts of slip and induced magnetic field effects on tangential
hyperbolic hybrid nanofluid over a stretching wedge with non-uniform heat
source. The nanoparticles used in this work are aluminum oxide (Al2O3) and
copper (Cu) while water is the based fluid. The fluid flow are modelled as partial
differential equations (PDEs). These are transformed to their corresponding
ordinary forms (ODEs), which are solved by the homotopy analysis technique with
the aid of similarity variables. The impact of prominent physical factors on fluid
temperature, velocity, induced magnetic field, local Nusselt number and drag
coefficient is explored. Tables and graphs are used to display the results which
agreed with the existing ones in the literature.

Machine Learning-Based Rock Facies Classification for Improved Reservoir Characterization in Niger Delta

O IBOYITIE — Tue, 25 Jun 2024 00:00:00 +0000

The Niger Delta, a cornerstone of Nigeria's oil and gas sector, plays a significant
role in the Nation's energy landscape. This research concentrates on enhancing
reservoir characterization, specifically emphasizing advancing rock facies
classification. Employing advanced machine-learning methodologies and a dataset
from 12 wells containing crucial well log parameters, such as Gamma Ray,
Resistivity Micro-Spherical, Volume of Shale, Resistivity Deep, Resistivity
Medium, Density, and Porosity, we conducted a rigorous evaluation of various
classification models. The Random Forest algorithm emerged as the optimal
choice, achieving an impressive F1 score of 0.93 and an accuracy of 0.93 on the
cross-validation set. A meticulous analysis of identified facies classes, including
Shale, Lower Shoreface, Middle Shoreface, Upper Shoreface, Transition
Shoreface, Over Bank, and Channel, through confusion matrices, offered
profound insights into the Model's efficiency. Feature importance analysis
underscored the critical role of variables such as volume of shale, gamma ray,
porosity, and bulk density in driving accurate predictions. This research
significantly advances subsurface exploration in the Niger Delta, highlighting the
effectiveness of machine learning for geologic characterization within the region's
intricate geological landscape.

Impact of Acetylation and Oxidation on Some Functional, Structural and Pasting Properties of Irish Potato (Solanum tuberosum) starch

T S YUSSUF — Tue, 25 Jun 2024 00:00:00 +0000

To meet the demanding technological needs of today, as well as eliminate the
drawbacks, native starches have been chemically modified. Oxidation and
acetylation have been widely employed to alter the chemical structure of starch. In
this study, native Irish potato starch (NIPS) was chemically modified with acetic
anhydride and sodium hypochlorite to produce oxidized (OIPS) and acetylated
(AIPS) starch. The functional and pasting properties of NIPS, OIPS and AIPS
were investigated. Oxidation and acetylation decreased the bulk density, pH, and
water absorption capacity (WAC) of native Irish potato starch whereas an
improvement was observed in the moisture content, the oil absorption capacity
(OAC) and foam capacity with respect to chemical modification. Oxidation and
acetylation increased the OAC of NIPS by 26.7% and 138%, and the foam capacity
by 23.1% and 34.0%. Oxidation and acetylation decreased WAC by 18.75% and
61.27% respectively. Oxidation increased the dispersibility by 1.47% while
acetylation decreased it by 4.94%. Oxidation increased peak and trough viscosities
but reduced breakdown, final and setback viscosities, whereas acetylation
increased peak, trough and breakdown viscosities but reduced final and setback
viscosities. The high peak and final viscosities of NIPS, OIPS, and AIPS suggest
that they could be used as thickeners in sterilizable products such as baby food and
sauces.

Wood Ash Assisted Maize Plant Reduction of Total Petroleum Hydrocarbon on Weathered Crude Oil Polluted Soil

U UGBUNE — Tue, 25 Jun 2024 00:00:00 +0000

The aim of this study is to examine the effect of wood ash in association with
planted maize in the remediation of total petroleum hydrocarbon in
weathered crude oil polluted. In the study, soils were artificially polluted with
weathered crude oil (50g Kg-1). Soil pollution, treatment, incubation and
analysis were done using standard laboratory protocol. The wood ash used
for soil treatment is alkaline with pH of 10.2, the ash also contained
remarkable quantity of essential nutrients. There was a reduction in the level
of pH and nutrients at the end of the incubation period. The sample treated
with ash in association with planted maize recorded the highest reduction.
There is also a decline in total petroleum hydrocarbon soil after the
remediation period in the entire samples, ash and maize plant combination
gave the highest reduction at the end of the remediation period. Therefore;
this research has shown that wood ash assisted maize plants in synergistic
relationship enhanced the reduction of total petroleum hydrocarbon in soil
than singly ash and maize plants strategies.

Development of a Novel Path for the Bioremediation of Crude Oil-Impacted Non- Turbulent Water Bodies under Isothermal Conditions

T ODISU — Tue, 25 Jun 2024 00:00:00 +0000

Crude oil spill has become a common phenomenon during oil production,
transportation, and refining operations. It can occur in both land and water.
While bioremediation and the use of cow dung for oil spill treatment have been
established as an effective and environmentally friendly approach in the
management of crude oil spill in land, little has been reported as it concerns water
and most importantly, non-turbulent water bodies. The possibility of this
application is of interest because non-turbulent water bodies have been reported
to support the transport of petroleum hydrocarbon components down the water
column, making the containment and treatment of polluted top surface
insufficient. This paper reports on effort to treat an entire non-turbulent water
body polluted with crude oil and with petroleum hydrocarbons diffusing through
different depth of the water column. This was achieved by designing balls of cow
dung with densities corresponding to that of the different depth strata of the water
column, and then introduced into the polluted water. The balls then dissociate
after a while, and filling the entire water volume with the cow dung particles, thus
providing the necessary nutrients for microbial growth and activities across the
entire water body. Samples of the water after treatment were then collected within
a four (4) weeks post-treatment period and analysed using a GC-FID. At the end
of the first week of treatment, the result showed a reduction of aliphatic
hydrocarbons from 171.827mg/l, 98.641mg/l, 31.075mg/l and 18.675mg/l to
95.991mg/l, 33.914mg/l, 4.128mg/l, and 0.42mg/l and 1.12mg/l, 0.075mg/l, 0mg/l,
and 0mg/l in the fourth week and at depths of 0.25m, 0.5m, 0.75m and 1.0m
respectively. In the same vein, the aromatic hydrocarbons at the same depths, and
after the first week of pre-treatment were 23.816mg/l, 12.942mg/l, 3.336mg/l and
0.962mg/l. At the end of the fourth week of post-treatment, negligible amount in
all depths were recorded. These results show that the approach can be adopted in
the treatment of oil spills in non-turbulent mangrove water bodies.

Path Loss Propagation Characteristics at 2.7 GHz in Sapele, Nigeria

D U ONYISHI — Tue, 25 Jun 2024 00:00:00 +0000

A study was conducted to examined the path loss propagation characteristics of
Global system for mobile communication signals in Sapele, Nigeria. Fifteen
different environments were investigated, which provided a comprehensive
representation of the city. The Received Signal Strength Indicator (RSSI) was
measured at varying distances from the base station for each environment. The
data was then analysed to regulate the propagation exponent path loss and
characteristics path loss. The path loss in Sapele was found to range from 2.9 to
4.2, with an average of 3.2. A Proposals and advice provided for enhancing the
quality of GSM services in the Sapele metropolis.

Assessment of Information System in the Prevention of Pollution in Nigerian Maritime Industry

K BELLO — Tue, 25 Jun 2024 00:00:00 +0000

This study examined the effects of information systems on preventing marine
pollution. In this study, 170 respondents from shipping companies in Lagos State
were chosen, and a survey research design was adopted. A factorial analysis was
adopted to examine factors influencing pollution in the Nigerian maritime
industry. The findings demonstrated that four factors may explain 72.8% of the
common variance shared by seven variables. This is the reflection of the KMO
value, 0.717, which can be considered good and also indicates that factor analysis
was useful for the variables. Furthermore, the result shows the rho values to be
0.759 at p equals to 0.000, which is less than 0.05; hence, there is a significant
relationship existing between the examined variables, which are information
systems and pollution prevention. It was concluded that the release of solid waste
such as plastics, ballast water, oil spill gases, defecating in the sea, vessel collisions,
and abandoned vessels are factors responsible for polluting the marine
environment. It was recommended that vessels install technology to prevent the
discharge of oil into the sea.

Determining Standardized Anomalies of some Atmospheric Parameters of Warri

Y S ONIFADE — Tue, 25 Jun 2024 00:00:00 +0000

This report delves into the determination of standardized anomalies in various atmospheric parameters
within Warri, Delta State. Focusing specifically on soil heat flux and net radiation, the investigation
aims to uncover irregularities and variations in these critical parameters over a ten-year period (2009-
2018). The need for such analysis arises from the significance of these atmospheric factors in
understanding local climate patterns and their implications for the environment. To address this
inquiry, comprehensive data sets were collected from the Nigerian Meteorological Agency (NiMet). The
collected data underwent meticulous analysis, wherein the mean, standard deviation, and, most
importantly, standardized anomalies were computed. The results of this study were presented
graphically, showcasing the standardized anomalies plotted against the twelve months of each year.
The graphical representation not only aids in visualizing the temporal variations but also serves as a
platform for a detailed discussion of the findings. Through this analysis, the research offers a
comprehensive understanding of how soil heat flux and net radiation deviate from their typical values,
contributing to an anomaly of the atmospheric conditions in Warri, Delta State.

Multivariate Principal Component Analysis Wavelet for Quick Detection and Isolation of Abnormalities in a Coordinated Protection Scheme

J N ONAH — Tue, 25 Jun 2024 00:00:00 +0000

Owing to the capital-intensive nature of the power system components and safety
of lives, fast response to intolerable conditions of power system networks becomes
a growing concern for experts in power system monitoring and protection. To
synthesize the noise nature of the signals, the multivariate principal component
analysis (MPCA) wavelet method was used to extract and simplify the fault signals.
An exploit of Daubechies wavelet (db3) was made and decomposed up to level 7.
To have a crack at the composite noise nature, an attempt was made on leveldependent
noise size estimation which was down-sampled by two at each
succeeding level of 7. The results obtained from details, approximations, and
simplified signals show that by far, multi-scale principal component analysis
(MPCA) is better than multi-resolution signal analysis (MRSA) wavelet for signal
detection and simplification.

Hybrid Voice-Based Biometric Gaits Automation System for Home Security

C C EBONINE — Tue, 25 Jun 2024 00:00:00 +0000

With an upsurge of data by global brands to interact/reach prospective clients, the
birth of the Internet has today bridged the information gap. Virtualization
techniques are today utilized as means to bridge the various lapses in our human
processing endeavors. The adoption of tech to perform a variety of functions has
since become imperative to ease our daily living as well as seamlessly allow
transformations of various kinds to be impacted on our society. Study proposes a
virtual key card access with cost-effective and cheap solution for managing access
to areas within a facility. We have successfully integrated IoTs, virtual key card
access, web-access control, solenoid lock integration, and ESP32-controller to
create a comprehensive access control system. Its benefits over traditional key
includes better security, user data privacy, system efficiency, and user convenience.
The system also provides real-time monitor and control capabilities that will allow
administrators to track and manage access to the facility remotely. And in turn,
enhancing system's security and efficiency.

Deployment of a Secure Blockchain-based Electronic Voting for Undergraduates in Nigeria

F E ERHUMU — Tue, 25 Jun 2024 00:00:00 +0000

In Nigeria, the democratic governance relies on elections for selecting leaders, but
the integrity of this process is vital for sustaining democracy. Developing
democracies, like Nigeria, face challenges such as the potential for electoral
violence and manipulation. The current paper-based voting system in Nigeria is
susceptible to data manipulation and lacks transparency. This study proposes a
Semi-Decentralized electoral system utilizing the Ethereum blockchain to enhance
the security, auditability, and efficiency of the electoral process. The system aims
to resist malpractices, reduce costs, and expedite the vote counting process while
minimizing human intervention. The blockchain's tamper-proof nature and
decentralized structure provide a secure and reliable platform for electoral data.
To understand the root causes of electoral malpractice, qualitative research was
conducted in Sapele Ward IV, Delta state, revealing self-interest, poverty, and a
lack of trust in the government as primary motivators. The implementation of the
blockchain-based electoral system demonstrated improved efficiency in collecting,
collating, securing, and publishing election results. This innovative approach
enhances the perceived integrity of the electoral process, addressing key challenges
in the current voting system.

Exploring Biometric Gait with Blockchain Cryptocurrencies Framework

J O MATTHEW — Tue, 25 Jun 2024 00:00:00 +0000

The blockchain has continued to showcase myriads of promises as a breakthrough
tech and highly adapted in manifold sectors. Its adoption is accompanied by a
range of issues that make implementation complicated. To aid successful
implementation, a variety of frameworks have been developed. But, selecting the
appropriate framework based on the conformity of its features with the financial
sector is a challenge for decision-makers. This study seeks to provide solution to
the challenge of synchronizing entire blockchain in a minimum possible time, and
create a Blockchain Technology Framework for pricing and Evaluating Financial
Markets and also simulate the cryptocurrency market data using a neural network
based application to generate the optimal prediction and predicting the future of
investment by fusing the facial recognition system with the framework.

Harmonizing Diversity through Streaming Audio-Format for Podcasts Users in Nigeria

R OBELEZE — Tue, 25 Jun 2024 00:00:00 +0000

Cloud computing and mobile connectivity has continued to reposition interactive access to
data. Audio contents have also evolved in its production, and consumption due to the rise in
the use of streaming platforms. Sales of physical audio copies continue to decline
significantly especially with the mandatory streaming as contents are reinvented using these
platforms services as a key part of its business development. Online streaming of contents
enable access to a vast collection in commercial and governmental databases, without need
for a permanent transfer of data to and from a user's device. Eliminating the issues of
security and content misuse by users. Study aims to select features for audio content
consumption via streaming platforms in relation to diversity in content formats particularly
studying the intention to adopt premium (paid) versions of an audio content in streaming
service and recommend them. Measuring diversity of content format yields some issues.
Traditional tools are not effective as power irregularities cohabit the birth of new dominant
players. Results shows the developed system is able to recognize the various content
diversity, stream the audio content for the user and ensure security of the audio content.

Deployment of a Secure Electronic Health Information Management System

J K OLADELE — Tue, 25 Jun 2024 00:00:00 +0000

The adoption of blockchains to effectively manage medical services – is fast become
popular, for professional use and in patient-centered application. Electronic
medical records are highly sensitive with user-privacy data in lien with medicalrelated
services for patient diagnosis and treatments. The nature and features of
these medical records have continued to necessitate its availability, reachability,
accessibility, mobility, confidentiality and security. These, have been demystified
with the birth of the blockchain technology that seeks to proffer platforms and
application services devoted to dependability, reliability amongst the features
earlier mentioned above. Thus, our study posits a blockchain health information
system for healthcare facilities in Delta State of Nigeria. Our ensemble yields a
permissioned blockchain using a hyper-fabric ledger. Using the world-state on a
peer-to-peer blockchain with various actors to include patient, practitioners and
other users to create, retrieve and store medical records for a patient to aid
interoperability – our ensemble yields a query and https response time of 0.56secs
and 0.42secs respectively for 2500-users, and 0.78secs and 063secs respectively for
7500-users.

Synthesis, Characterisation, and Antibacterial Activities of Cu(I) Complexes Bearing (N^N) Bidentate Schiff Bases having Triphenylphosphine Ancillary Ligand

S O ODULAJA — Tue, 25 Jun 2024 00:00:00 +0000

This work synthesized new biologically active Cu(I) complexes 1-5, obtained from
the reaction of Cu(I) nitrate with different bidentate pyridinyl Schiff base ligands
(E)1-(pyridin-2-yl)-N-(p-tolyl)methanimine L1, (E)-1-(pyridin-2-yl)-N-(otolyl)
methanimine L2, (E)-N-isopropyl-1-(pyridine-2-yl)methanimine L3, (E)-Nmesityl-(
pyridinyl)methanimine L4 and (E)-N-(2,6-dimethylphenyl)-1-(pyridine-
2-yl)methanimine L5, with PPh3 ancillary ligand. The metal complexes with
general formula [Cu L(PPh3)2]NO3, were characterised by FT-IR, UV-Vis, NMR
and MS, X-ray crystallography and elemental analysis. The antibacterial activities
against Staphylococcus aureus (SA), Escherichia coli (EC), Klebsiella pneumonia
and Pseudomonas aeruginosa (PA) were investigated using agar well diffusion
method with ofloxacin as reference. UV-Visible spectra and FT-IR result showed
bathochromic shift in the imino (C=N) frequencies in the complexes confirming
coordination to the metal centre. Single crystals obtained in complexes 2, 3, 5
revealed orthorhombic crystal systems having Tau (τ4) values in the range 0.73 -
0.87 depicting distorted tetrahedral geometries. Coordination to the metal center
was bidentate for all the ligands via the pyridinyl N and imine N in conjunction
with two triphenylphosphine P in the N^N^P^P fashion in complexes 2, 3, and
N^N^P^O fashion in complex 5. The antibacterial activities revealed that all the
complexes exhibited better antibacterial activities relative to their parent ligands
and PPh3. The study found out that the newly synthesized complexes have better
antibacterial performances hence make the metal complexes potential
chemotherapeutic agents in drug design.

Evaluating the viability of WindPACT-1.5 MW HAWT for Offshore Wind Development in Nigerian Shallow Water Locations

J A AGBAKWURU — Tue, 25 Jun 2024 00:00:00 +0000

This study evaluates the viability of WindPACT-1.5 MW Horizontal Axis Wind
Turbine (HAWT) for offshore wind development in the shallow waters of Nigeria.
With the imperative need to address escalating energy consumption and mitigate
climate change impacts, offshore wind power holds promise, offering opportunities
for substantial electricity generation and economic growth. In this study, key
metrics were examined for three potential offshore electricity projects: Asabo,
Forcados, and Bonny Offshores. Asabo Offshore demonstrated superior potential,
projecting the highest electricity generation at 21,167,296.08 kWh, resulting in
substantial revenue of ₦1,319,357,564.67 per annum. Moreover, its Levelized Cost
of Electricity (LCOE) of ₦60.8184/kWh underscores its cost efficiency compared
to Forcados and Bonny Offshore projects. Net profit analysis further revealed
Asabo's positive financial returns, is very low and there are net losses for the other
two sites. Notably, Asabo Offshore showcased a 2.49% Return on Investment
(ROI), indicative of a very low profitability, while Forcados and Bonny Offshore
indicated negative ROIs of -46.74% and -48.39%, signaling potential financial
setbacks. This comprehensive evaluation demonstrates that the WindPACT-1.5
MW HAWT, does not hold significant promise for offshore wind development in
Nigeria's shallow waters.

Online Media Audience Awareness and Response to Political Cyberbullying and its Implication to Development in Nigeria

E IKPEGBU — Tue, 25 Jun 2024 00:00:00 +0000

Tensions are usually high during political campaign periods in Nigeria as
politicians seek to influence the electorates to their favour. In the process, they
express sentiments that sometimes threaten or disparage their opponents. Online
media platforms have been one of the most adopted means for politicians, leading
to political cyberbullying. This study focused on online media audience awareness
and response to political cyberbullying and its implication to development in
Nigeria. The study had two objectives on the awareness level and response to the
issue. The researchers anchored the study on the Selective Processes Theory, and
approached it through qualitative survey research design. There were 224
respondents drawn from online media users in Nigeria. A Google designed form
was administered through emails and WhatsApp platforms. The study adopted the
four-point Likert scale format with 2.5 as the criterion for decision. The
researchers found out that online media audience is averagely aware (3.26 AWMS)
of political cyberbullying in Nigeria. Secondly, the respondents have a high
negative perception (3.56 AWMS) about political cyberbullying, which is good for
development. It was therefore concluded that with the knowledge and perception,
politicians may not benefit from political cyberbullying in the future. The study
recommends that mainstream media should increase anti-political cyberbullying
campaign through its online media platforms.

Optimizing the Performance of Inland Dry Ports: The Role of Inland Transportation in Nigeria

G M Eto — Tue, 25 Jun 2024 00:00:00 +0000

The study reviews the essence of inland dry ports (IDPs) in Nigeria and the vital
role played by inland transportation as performance-enhancing factor in the
mutually complementary services of IDPs and seaports. The study adopts survey
research design and used primary and secondary sources of data. Questionnaire
and interview were the instruments used for sourcing primary data. Six objectives
of the study centre on the problem and the study adopted the Taro Yamane
formula to determine 343 as the sample size, out of study population of 1412. The
study uses descriptive statistics and identifies the challenges faced by rail, road and
inland waterways modes of transport in the quest to connect them to IDPs in
Nigeria from interview, literature review, media reports, port operators and other
stakeholders. It identifies the effects of poor port hinterland connectivity, and
noted the high-cost element in transporting containers through deplorable roads
to IDPs in Nigeria, which is taking its toll on the performance of the IDPs. The
study recommends that Government should adopt a holistic national freight
logistics strategy, which involves all tiers of government and industry, and make
provision for enhanced coordinated national multi-modal and intermodal
approaches to freight planning. This would facilitate the reduction of trade costs
and enhance the optimization of the performance of inland dry ports in Nigeria.

Telemedicine Model for Hyperglycaemia Patients on Emergency in Ughelli, Delta State

R O IDAMA — Tue, 25 Jun 2024 00:00:00 +0000

Real time telemedicine model especially in the face of emergency has come to stay. In a
remote health monitoring system, patient identification is given more consideration as a
crucial security requirement. To highlight the difficulties and talk about how complete the
answers are, more research is necessary. For real-time telemedicine monitoring systems, a
novel authentication mechanism built on models is suggested. To modernize the pattern of
the neighborhood hospital's operations, the adoption of the created model as a new
authentication mechanism is suggested in the first phase. The creation and data gathering
of the recently constructed model are discussed in the second phase to put the methods into
context. Our authentication method uses two modalities namely text and visual chat. Key
component suggested usability for test users is identified. Also, future simulations and
implementations with privacy protection, authentication process ensured resultant
applications was robust, scalable, persistent and high-level usability. 81.08% of the medical
personnel and 87.21% of the patients agreed telemedicine system should be adopted due to
its quick diagnosis during emergency, reduced referrals, strengthens patients’ confidence,
eased usage, enhanced proficiency and management with user-friendly interface have all
become inherent benefits of proposed system.

Pilot Study on Webometric for Assessing User Footprint, Satisfaction and Experience on Academic Website: A Case of the University of Delta Agbor

B MALASOWE — Tue, 25 Jun 2024 00:00:00 +0000

Webometric assesses the user convenience and experience while interacting with web-based
system. Businesses use websites to present their deliverables to a larger audience. The aim
of which is to refocus and reshape a user’s image of about a business. This has today, been
extended to facilitate activities like recruitment etc. We investigate usability of the
University of Delta Agbor (UniDEL) website with other select Nigerian varsities using
expert review guideline, and to compare the achieved criterion scores against the selected
varsities websites. The adopted methodology is the expert review guideline that is available
by the World Ranking of Universities. Result shows the overall performance with UniDEL
website performing poorly against the selected websites. These are based on the unique
strengths and unique gaps. Unique features showed that selected websites successfully
ensured that her trust/credibility section and homepages received highest scores. The
UniDEL's website was found to struggle for good search usability, and data entry criteria
among other flaws in her web design. Findings suggest UniDEL website needs to be
reworked with home-pages, search, trust and content features in mind to ensure greater
visibility and user experience.

Computer Aided Engineering Performance Analysis of Lathe Machine Spindle using Field Generated Data

F I OGIDIAGBA — Tue, 25 Jun 2024 00:00:00 +0000

This research investigated the computer aided engineering performance analysis
of a lathe machine spindle using field generated data. The Excel 360x1000 lathe in
the FUPRE workshop has been used for numerous students training and project
experiments using non-optimal settings, without evaluation of the spindle
performance, productivity, and product surface finishing. This study analyzed the
interaction between input [spindle speed, depth of cut and feed] and response
[material removal rate and surface roughness of machined part] parameters, as
well as evaluates the integrity of the lathe spindle during turning of AISI 1085
work-piece using carbide inserts. RSM was used for the design of the experiment
and optimization of the process to obtain maximum material removal rate and
minimal surface roughness. The turning process was also to modeled, utilizing
maximum generated cutting forces acting on the spindle during machining to
ascertain its resilience. Optimization of the dependent and independent variables
proffered the best solution based on set constraints with a desirability of 0.788. The
conducted Finite element analysis [static, dynamic, and fatigue] yielded spindle
maximum deflection of 0.01432mm, maximum von mises stress of
18840000N/m^2, least natural frequency of 898.64Hz, and spindle remaining
fatigue life of 100 million cycles. These findings infer that the lathe spindle is robust
and optimal responses were achieved at a specific input configuration.

Effects of Some Herbal Cosmetics on Sex Hormones of Rabbits

B HOLY — Tue, 25 Jun 2024 00:00:00 +0000

Heavy metals have been observed as competitor for receptor sites in hormones
thereby resulting in infertility problems. Herbal cosmetics have been observed to
contain heavy metals which interfere with the receptor sites of hormones. Three
herbal cosmetics sold in Port-Harcourt were evaluated for heavy metals and
rabbits exposed to them for 30 -90days. The aim is to determine the effect of heavy
metals on the sex hormones of the rabbits. Three herbal oil namely All things
natural (Emi herbal oil), Kakiva (Kakiva herbal oil) and Amal (botanical herbal
oil) as well as forty –eight rabbits were purchase from a market in and animal
house in Port Harcourt respectively. The rabbits were exposed to the oil for 30, 60
and 90 days and scarified for blood samples. The sex hormones of the rabbits
evaluated using standard methods. Data were analyzed using statistical package
for social sciences (SPSS) to compare means. There were no significant differences
in the sex hormones in 30days and 60days. However, there was a significantly
lowered progesterone and estrogen after exposure 90days. It is therefore pertinent
to conclude that herbal cosmetics contain heavy metals which may alter the sex
hormones pattern which leads to luteal phase dysfunction.

A Comprehensive Review on Limitations and Strategies for Enhancing Remote Teaching and Learning in Academic System

S E MUGHELE — Tue, 25 Jun 2024 00:00:00 +0000

Covid-19 was declared a global pandemic in 2019. The most practical method for
continuing teaching and learning, particularly at Academic institutions, is to use
Remote teaching and learning. There has been a significant shift from face-to-face
teaching and learning to a fully online teaching and learning environment.
Academic institutions must ensure that their curricula are consolidated and
adjusted to accommodate online teaching and learning. Educators must adapt to
new and creative techniques to engage students during Remote teaching and
learning to meet the new normal in teaching and learning. This paper reviews the
literature on 1) the obstacles that Academic institution educators encounter in
Remote teaching and learning and 2) the techniques they employed to address
those challenges during the Co-vid-19 outbreak.

Assessment of Medical Waste Disposal and Environmental Implications in Uyo City Metropolis

E I NDIFREKE — Tue, 25 Jun 2024 00:00:00 +0000

Indiscriminate dumping of infectious and toxic medical wastes generated from the
hospital as well as open burning of these wastes are becoming prevalent in recent
times. This usually result in several health and environmental problems. The
objective of this study was to determine the soil elemental compositions in hospital
waste disposal sites in Uyo metropolis. The study areas, included Uniuyo Teaching
Hospital, St. Luke’s Hospital, Uniuyo Medical Centre and Children Hospital.
Underlying soil samples in the waste disposal sites were collected in a cellophane
bag and tied properly to prevent air ingress. Atomic absorption spectrophotometer
was employed to determine trace metals present in the waste disposal sites which
were compared to World Health Organization Standards. The results were
analyzed using statistical analysis, ANOVA. Results obtained from the atomic
absorption spectrophotometer revealed that each of the samples contained one of
the following elements such Pb, Ni, Cr, As, Cd, Al. The ANOVA results showed
that mean values of the heavy metals were within WHO permissible limit, like lead
Pb (1.302) at the children hospital site, Nickel Ni (0.448) at Uniuyo Teaching
Hospital site, Aluminum Ai (0.486333) at the Uniuyo Medical Centre site, Arsenic
As (0.239333) at the control site. Except chromium Cr (0.343667) at the children
hospital site that was above the WHO standard. From the result of the statistical
analysis, it was observed that medical wastes had a significant effect on the
environment of Uyo metropolis. Based on the findings, it is recommended that
effective method of waste segregation and disposal should be implemented, and
designated sites should be used as dump sites.

Modelling of Average Weight Loss in Welding Defects using Response Surface Methodology and Artificial Neural Network

T A MABIAKU — Tue, 25 Jun 2024 00:00:00 +0000

The study aims to bridge this gap by scrutinizing the impact of a specific nonelastic
factor, namely the average weight loss, on pipeline weldments and its
interaction with elastic properties. To fulfil this objective, a comprehensive
experimental inquiry is conducted, encompassing diverse welding methods,
materials, and environmental conditions to authentically replicate real-world
situations. This investigation unveils the intricate interrelation between elastic and
non-elastic facets, underscoring the necessity of encompassing the latter to ensure
the dependability of pipeline weldments across various operational contexts.
Cutting-edge techniques, such as machine learning algorithms and finite element
simulations, are harnessed to accurately predict and optimize these non-elastic
factors, thereby enhancing the overall strength and structural integrity of pipeline
weldments. The experimental setup adheres to the central composite design,
meticulously constructed utilizing design expert software (version 13.0). The
response surface methodology analysis yields optimal outcomes, suggesting a gas
flow rate of 14.667 liters per minute, a voltage of 21.280 volts, and a current of
160.000 amps. These parameters collectively yield a welded joint with an average
weight loss value of 0.236, achieving a desirability value of 0.918. Additionally, the
artificial neural network model is employed to predict output parameters and
compared against the RSM methodology. The findings underscore the pivotal role
of optimizing non-elastic performance factors in pipeline weldments. By
accurately anticipating and controlling the period of immersion, engineers and
professionals within the pipeline sector can design weldments capable of enduring
harsh conditions, thus, prolonging pipeline operational lifespans.

The Activation Energy Parameters of Pumpkin Pod Extract as Corrosion Inhibitor for Stainless Steel in HCl Medium

A T ADEBAYO — Tue, 25 Jun 2024 00:00:00 +0000

The inhibition effect of pumpkin pod extract (PPE) on the corrosion of stainless
steel in 2M HCl has been studied by weight loss technique. The process of
inhibition and temperature effects on inhibition efficiency, rate of corrosion, and
weight loss were determined with a temperature range of 313K – 353K at 7 hours
of dipping. An increase in temperature led to a decrease in both the inhibition
efficiency of PPE extract and the rate of corrosion of stainless-steel metal surfaces.
Parameters of thermodynamics activation such as; activation energy, enthalpy,
and entropy values range from 73.739 - 110.056kJ/mol, 70.936 – 107.252kJ/mol,
and 2.7610 – 100.373J/molK respectively. The higher value of activation energy
obtained in comparison to the enthalpy of adsorption suggests a physical
adsorption mechanism on stainless steel.

Evaluation and Empirical Modeling of Call setup success rate and Call Completion Rate

A O OSAHENVEMWEN — Tue, 25 Jun 2024 00:00:00 +0000

The Quality of Service (QoS) rendered by mobile communication network is
pivotal to the economic development of any country. Therefore, considering the
quality of service in Nigeria mobile communication network is not out of place.
This study focuses on the evaluation and empirical modeling of the Call Setup
Success Rate (CSSR). The research method is divided into three unique sections:
evaluation of Call Setup Success Rate (CSSR), measurement of Call Setup Success
Rate (CSSR) using the old Engineering Faculty and medical college area in
Ekpoma town. Additionally, modeling of Call Setup Success Rate (CSSR) is based
on the obtained data from the area under investigation. Measurement was carried
out from two basic points, considering the attitudes and longitudes of two points
respectively. Three mobile network operators were considered for this study, MTN
NG, GLO NG and AIRTEL NG, six different mobile phones were deployed, along
with ten stopwatches. Calls are initiated from MTN to GLO and Airtel, to
determine the respective CSSR using a stopwatch. Additionally, the process was
repeated from GLO to MTN and Airtel, and lastly from Airtel to MTN and GLO.
This procedure is of subjective nature, where ten (10) evaluators with their
stopwatches are made to record CSSR time independently. The corresponding
results are averaged, and the outputs are presented in graphical format. It was
observed that the CSSR obtained is not deterministic in nature due to poor signal
strength level, and the CSSR flow pattern can best be described as a logarithmic
distribution pattern based on the developed empirical model. Furthermore, it was
observed that the call setup success rate is at a minimum when calls are setup
within the same.