9 research outputs found
Eco-Friendly Calcium Nanoparticle Coatings: A Sustainable Strategy for Postharvest Preservation of Food Crops
No full textTomato spoilage remains a major postharvest challenge in Nigeria, where poor preservation methods cause 40–50% annual yield losses. This study explored the use of eco-friendly calcium nanoparticles (CaNPs) synthesized from orange peel extract (OPE) as a sustainable coating to extend tomato shelf life. OPE was prepared by aqueous extraction at 60 °C for 1 hour and reacted with 1 mM calcium nitrate (Ca(NO?)2) to produce CaNPs via green synthesis. Colour transition from light to deep golden brown was observed, with UV–Visible spectroscopy showing maximum absorbance at 326 nm and TEM revealing spherical nanoparticles and particle size (72.35–93.34 nm). Fresh tomatoes coated with 0.5 mM and 0.8 mM CaNPs were stored for 28 days at ambient temperature and compared with uncoated controls. Coated fruits retained higher moisture (84.01–84.22%) and showed enhanced crude protein, fat, fibre, and carbohydrate contents. Colour analysis (L*, a*, b*) indicated better retention of brightness, redness, and yellowness. CaNPs coatings effectively preserved nutritional and sensory qualities, reducing water loss and pigment degradation. Using orange peel as a reducing agent valorises agricultural waste and promotes green nanotechnology as a low-cost, biodegradable strategy for reducing postharvest losses and improving food security in developing nations’ economies
Therapeutic effect of methanolic extract of Laportea aestuans (L.) Chew, on oxidative stress in the brain of male Wistar rats
No full textInternational organizations: wielders of power in the emerging international order
No full textDo international organizations have power in the international system? This study evaluates the impact of regional international organizations in modern global affairs. The study employs statistical and case study research to uncover the process involved in regional intervention in support of constitutional order. It weighs the impact of regional organizations vis-à-vis regional powers and powerful states at the global- level. The empirical findings show that regional organizations hold power independent and at times greater than powerful states in the international system. Realism remains the dominant theory in international relations, yet current global trends evidenced from this project question the usefulness of realist-based assumptions that states are the sole dominant actors in the international system, even in world filled with international organizations.Ph.D.Includes abstractVitaIncludes bibliographical referencesby David Oladipupo Kurang
Enhanced antioxidant capacity following selenium supplemented antimalarial therapy in Plasmodium berghei infected mice
No full textA Multi-Criteria Decision Making Approach to Journal Selection and Ranking
No full textSelection and ranking of Journals is an important issue in research community because of
the fast growing list of journals. This issue has been extensively attended to as a selection
problem using different search engines and recommender systems. Unfortunately, though
there are multiple conflicting criteria about the journal features, the selection problem has
never been viewed as a multi-criteria decision making one. In this paper, journal selection
and ranking is formulated as multi-criteria decision making problem and a new approach for
journal ranking based on author's preference and preference selection index is proposed.
The proposed approach has been verified with three cases in the field of Computer
Science. Journal indexing, publisher, percentile, citescore and open access status were
considered as journal attributes. Scopus and Science Citation Index Expanded are sources
of the journal dataset. Selenium and Beautiful Soup were used as web scraping tools for
capturing journal information. The case study results suggested different ranking results for
each author, reflecting the effect of each author's preference rating of the journal attribute
options. This study has been able to formulate journal selection and ranking as a multicriteria
decision making problem and a ranking system has been implemented to support
potential authors
C6H5NH2 effect on the corrosion inhibition of aluminium in 0.5 M HCl
No full textIn this paper, C6H6NH2 (aniline) effect on the corrosion of aluminium in 0.5 M (i.e. mol/L) HCl medium was studied using gravimetric method by weight loss measurements and electrochemical technique of corrosion potential and potentiodynamic polarization by cyclic voltamery (CV) instrumentation. By these techniques, corrosion rate obtained from aluminium specimens, in 0.5 HCl test-solution having different concentrations of the hydrogen-containing C6H6NH2 chemical, were requisitely analysed. Results showed that the potentiodynamic corrosion rate excellently correlated (R = 98.94%, Nash-Sutcliffe efficiency = 97.89% and ANOVA p-value = 0.0314) with function of the gravimetric corrosion rate and C6H5NH2 concentration. Both experimental and correlated prediction models identified 0.043 mol/L C6H5NH2 with optimal inhibition efficiency performance η = 84.11% by the experimental or η = 81.15% by the predicted models. Fittings of experimental and correlated data showed the data models followed the Langmuir adsorption isotherm from which favourable adsorption and prevalent physisorption were indicated as the C6H5NH2 corrosion-protection on aluminium metal in the 0.5 M HCl medium
Experience of gender-based violence to students in public and private secondary schools in Ilorin, Nigeria
No full textObjective: To determine and compare prevalence of Gender based Violence (GBV) in public and private secondary schools students and to identify factors associated with experience of GBV by the students.Design: Comparative cross-sectional survey of using a 60 item self-administered questionnaire.Setting: Ten public and private secondary schools in Ilorin South Local Government area of Kwara State.Participants: 640 students, (320 each) from public and private schools.Main outcome variable: Prevalence and factors influencing experience of physical, sexual and psychological violenceResults: At least one form of GBV was experienced by 89.1% of public and 84.8% private schools students(p=0.32). Psychological violence was commonest type of GBV experienced (Public -72.5% vs. Private - 69.2%;p=0.37), while sexual violence was least (Public -41.4% vs. Private - 37.4%; p=0.3). Females were less likely toexperience physical violence (OR 0.3; 95% CI 0.2-0.4) and psychological violence (aOR 0.6; 95%CI 0.4-0.8). Studentswho were in a relationship and who had history of parental violence were more likely to experience sexual(aOR 1.7; 95%CI 1.2-2.4) and aOR 1.5; 95%CI 1.2-2.2) and psychological (aOR 1.3; 95%CI 1.1-1.5 and aOR 1.3;95%CI respectively) violence.Conclusions: GBV was a common experience of students in both groups of schools. Multi-disciplinary interventionsemphasising ending physical and psychological violence among private school students and sexual violence in public school are recommended. Interventions that involve the parents, school authorities and students on nonviolence conflict resolution are urgently required. Parents and students who perpetrate violence should be referred for counselling.Funding: Author fundedKeywords: Violence, Gender based violence, Violence exposure, Secondary School, Student
Assessment of the hepatoprotective activity of the seeds of Hunteria umbellata (Hallier F.) on carbon tetrachloride (CCl4) induced liver damage in Wistar albino rats
No full textThis study was designed to evaluate the hepatoprotective activity of the seeds of Hunteria umbellata (HU) on
carbon tetrachloride (CCl4) induced rats. Rats of groups 1 (normal control), 3 and 5 were not treated with CCl4 while rats
of groups 2 (negative control), 4 and 6 rats were treated with single dose of CCl4 (2 ml/kg) by intraperitoneal administration.
Normal control group 1 rats were given distilled water, groups 3 and 4 rats were given 50 mg/kg of silymarin while groups
5 and 6 rats were given 500 mg/kg of HU. Treatment was administered orally for 28 days and sacrificed on the 29th day
after an overnight fast. The weights of the rats were taken before and after the treatment. Blood samples were collected in
heparinized tubes and biochemical analysis of liver functions and lipid profile tests were carried out on plasma. There was
a significant change (p<0.05) in the levels of alanine aminotransferase, alkaline phosphatase, high density lipoprotein and
triglycerides of the CCl4 induced group treated with HU compared to the CCl4 untreated group 2 animals. The results
obtained showed that the ethanolic extract of HU has hepatoprotective property
JOURNAL OF HUMAN KINETICS & HEALTH EDUCATION PEDAGOGY: PSYCHOLOGICAL FACTORS AS CORRELATES OF ACCIDENT RISK BEHAVIOUR AMONG COMMERCIAL DRIVERS IN ONDO STATE, NIGERIA
No full textGUIDELINES FOR PAPER SUBMISSION
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