International Research and Academic scholar society

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Our Mission
At IRASS Publisher, our mission is to empower authors and researchers by providing a platform for their unique perspectives. We believe in fostering creativity and promoting voices that reflect the richness of human experience.
Our Vision
We envision a world where diverse stories and groundbreaking research thrive, enriching the literary and academic landscape. We aim to be a leading publisher recognized for our commitment to quality, innovation, and inclusivity.
Open Access Policy
IRASS Publisher commits to providing open access to all its published content. Our policy ensures that research articles are freely accessible to the public without subscription fees. Authors retain copyright while allowing unrestricted distribution and reproduction in any medium, provided the original work is properly cited. By removing access barriers, IRASS aims to foster a more inclusive and collaborative scientific community.
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Latest Article
Simulation of a Plate Distillation Column for Separation of Ethanol-wa...
2

Sivamani Selvaraju*
Mechanical and Chemical Engineering Unit, Department of Engineering and Technology, University of Technology and Applied Sciences, Salalah, Oman
61-68
http://doi.org/10.67564/IRASSJMS.v3.i8.0185

The study explores the effect of mole fraction of ethanol in feed on the performance and energy efficiency of a distillation column used for ethanol-water separation by simulation using DWSIM. Key parameters, including the molar flow rates of distillate and bottom products, condenser and reboiler duties, minimum reflux ratio, and tray requirements, were analysed by maintaining the following parameters constant: 100 kmol/h of feed, Non-Randon Two-Liquid (NRTL) thermodynamic model, mole fraction of ethanol in distillate is 0.9 and in bottom is 0.05, reflux ratio of 2.5, partial condenser and pressure and vapour fraction flash specification. As the feed ethanol mole fraction increases from 0.4 to 0.6, the distillate flow rate rises, while the bottom flow rate decreases, demonstrating enhanced ethanol recovery. However, energy requirements exhibit a non-linear trend, peaking near a mole fraction of 0.5 due to azeotropic tendency. The minimum reflux ratio progressively increases with ethanol content in feed, highlighting the energy trade-off necessary for achieving desired separation. Additionally, the number of minimum trays, feed tray position, and actual number of trays all increase with feed ethanol concentration, reflecting the rising separation difficulty. These findings provide valuable insights into optimizing column design and operation for maximum efficiency and product quality while minimizing energy consumption.
Health Expenditure and Infant Mortality in Nigeria
0

Suleiman Ademu*1, Iortyer Dominic2, Oladele O Aluko3
1*-2-3Department of Economics, Federal University Lokoja
6-15
https://doi.org/10.5281/zenodo.22056116

This study examined the impact of public and private health expenditure on infant mortality in Nigeria using annual data from 1986 to 2024. Motivated by persistently high infant mortality despite rising health spending, the study employed Dynamic Ordinary Least Squares (DOLS), alongside Wald and Granger causality tests, to estimate long-run relationships and causal direction. The results show that public health expenditure significantly reduces infant mortality, with a 1% increase associated with a 0.063% decline in infant deaths. Private health expenditure also has a significant negative effect, as a 1% rise reduces infant mortality by 0.050%. Per capita GDP exerts the strongest impact, with a 1% increase reducing infant mortality by 0.157%. Granger causality results indicate that public health expenditure and per capita GDP drive reductions in infant mortality, while private health expenditure is less predictive and more reactive. The study concludes that reducing infant mortality in Nigeria depends on sustained public health investment, supportive private financing, and inclusive economic growth. It recommends increased and efficient government health spending, policies that improve access to private healthcare, and broader economic measures that enhance household welfare and living standards.
ECONOMIC SUSTAINABILITY AND TOURISTS’ BEHAVIOURAL INTENTIONS IN DELTA...
3

Solomon Ejiro Onegemuhor1, Eucharia Mary Ijomah2, Yemisi Eunice Jegede*3
1Department of Hospitality and Tourism Management, Southern Delta University, Ororope Campus, Delta State, Nigeria, 2Department of Tourism and Hospitality Studies, Admiralty University of Nigeria, Ibusa, Delta State, Nigeria, 3*Department of Economics, Ekiti State University, Ado Ekiti, Nigeria
1-5
https://doi.org/10.5281/zenodo.22052513

This study examined the relationship between economic sustainability and tourists’ behavioural intentions—specifically revisits intention and destination loyalty—among tourists visiting attraction sites in Delta State, Nigeria. Anchored on Stakeholder Theory and the Theory of Planned Behaviour, the research addresses the limited empirical evidence regarding how destination sustainability dimensions influence tourists’ future behavioural responses within the Nigerian context. A descriptive survey design with a cross-sectional approach was adopted. Using a convenience sampling technique, structured questionnaires were administered to tourists across selected attraction sites, yielding 142 usable responses out of 150 distributed (94.67% response rate). Data were analyzed using Pearson Product Moment Correlation on SPSS. The findings revealed a strong, positive, and statistically significant relationship between economic sustainability and revisit intention (r = .624, p = .000, R^2 = 38.9\%). Similarly, economic sustainability demonstrated a strong, positive, and statistically significant relationship with destination loyalty (r = .656, p = .000, R^2 = 43.0\%). Consequently, both null hypotheses were rejected. The study concludes that economic sustainability conditions significantly influence positive post-visit tourist evaluations and future intentions. It recommends that tourism stakeholders and destination managers collaborate to establish enterprises, infrastructure, and services that meet visitors' needs while enhancing the economic well-being and living standards of host communities.
Effects of Contructivists Approach on Performance and Retention of Gen...
176

Zarau Madacci Usman*1, Fauziya Anka Abdullahi2, Samira Malik Dauda3
1*Department of Biology Education, Federal College of Education Gidan Madi, Sokoto, 2Department of Science Education, Zamfara State University, Talata Mafara, 3Department of Integrated Science, Federal College of Education Okene
25-30
http://doi.org/10.67564/IRASSJAHSS.v3.i8.0262-2

The study examined the Effects of Constructivists Approach on Performance and Retention of Genetics Concepts among Secondary School Students in Sokoto State, Nigeria. Quasi experimental research design was adopted which involves pre-test, post-test and post-posttest on two non-equivalent groups designated as experimental and control group. Two research objectives and questions guided the study while two null hypotheses were tested at 0.05 level of significant. The population of the study consisted of 1,639 SS II students across the 10 Schools under Science and Technical Education Board in Sokoto State. Multistage sampling techniques was used to select the sample for the study, 237 SS II students were selected from four schools using intact classes. Genetics Performance Test (GPT) instrument which contained 30 items were used to collect data. The instrument was validated by experts in the field of Biology. Pilot testing was used to establish the reliability of (GPT), the reliability coefficient of 0.86 was obtained using (KR-20) formular. The independent t-test was used to test the two null hypotheses. The findings of the study revealed that there is significant difference in the performance and retention of students taught genetics using constructivists approach than those taught using conventional method. Based on the findings, it was recommended among others that, Biology teachers should be encouraged adopt constructivist approach to engage the students in meaningful learning which led to enhanced performance of secondary school students in Genetics.
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