Wollega University

A comparative analysis on MHD fluid flow over a thickness varying surface using Buongiorno model

Nanofluids have extensive applications across engineering and industrial domains, including heat exchangers, microelectronics, chillers, and pharmaceutical processes. Utilizing these advanced features, this study is opted to analyze the properties of non-Newtonian Casson nanoflui...

Utilization of mineralocorticoid receptor antagonists within guideline-directed medical therapy for patients with heart failure and reduced ejection fraction at Wallaga University Comprehensive Specialized Hospital: a hospital-based retrospective study

Despite the advancements of therapy and prevention, heart failure continues to be a major cause of morbidity and mortality worldwide. Appropriate use of Guideline Directed Medical Therapy has been proved to improve the clinical outcome of patients with heart failure with reduced...

Solving Bi-objective Interval Assignment Problem using Trisectional Fuzzy Trapezoidal Approach

Background The conventional Assignment Problem (AP) may no longer be sufficient to handle real-world problems as they get more multifaceted and incorporate numerous, frequently conflicting objectives. In response, the Bi-Objective Assignment Problem (BOAP) provides an extended op...

Green synthesis of TiO₂ nanoparticles using allium sativum skin extract for acridine orange photocatalytic degradation: optimization via R

Green synthesis of Titanium dioxide nanoparticles (TiO 2 ) using agricultural waste presents a sustainable solution for wastewater treatment. Here, we demonstrate an eco-friendly synthesis of TiO 2 NPs utilizing garlic skin waste (Allium sativum) as a natural reducing and stabili...

Adherence to cervical cancer follow-up screening and lesion recurrence in sub-Saharan Africa: a systematic review and meta-analysis

Timely follow-up after screening and treatment is essential for effective cervical cancer prevention. However, adherence remains markedly low across many low-resource settings, where missed follow-up and high recurrence rates undermine the effectiveness of screening programs. As...

Exploratory QSPR analysis of physicochemical properties of selected antifungal agents using topological indices

Abstract The structural-property relationships are key in the study of the physicochemical behavior of pharmaceuticals. The degree-based topological indices available through molecular graph theory are used to investigate the structure-property analysis of selected antimycotic ag...

An assessment of the challenges facing the urban informal sector in the Wallaga Zones of Oromia Regional State, Ethiopia

The objective of this study is to assess the challenges facing the urban informal sector in the Wallaga Zones of the Oromia National Regional State, Ethiopia, using a cross-sectional research design. A total of 404 urban households engaged in informal sector activities were selec...

Adoption of complementary green production technologies among Ethiopian smallholder farmers

Abstract BACKGROUND Green production technologies (GPTs) are essential for improving the ecological sustainability and economic efficiency of agriculture. However, evidence on the joint adoption, intensity of use, and knowledge of multiple GPTs remains limited in Ethiopia. This s...

Optimization of surface finish in fused deposition modeled components using hybrid metaheuristic techniques and abrasive flow machining

Fused deposition Modelling (FDM) technique is extensively used in industrial applications. The main advantage of this technique is to provide flexibility and ease of operation, but at the same time, surface roughness is a significant drawback to FDM, caused by layer-by-layer depo...

Trace metal accumulation in automotive garage soils of Jimma Town Ethiopia and its potential health implications

Abstract Garages generate waste streams—including used oils, metal fragments, brake and tire debris, and fluid spills—that introduce trace metals into surrounding soils. This study quantified chromium (Cr), zinc (Zn), and copper (Cu) in topsoils from six garages (G1-G6) in Jimma...

Suitable Substrates for Black Soldier Fly Larvae Production: A Pathway Towards Sustainable Aquafeed Production

ABSTRACT Due to the rapid growth in aquaculture, there is an urgent need to explore alternative sustainable sources for fish feed other than conventional fishmeal. Black soldier fly larvae (BSFL) have been identified as a potential source of protein that could transform waste mat...

A fuzzy graph-based Kulli–Basava descriptor for isomer discrimination and physicochemical property prediction

Abstract In this paper, a generalized fuzzy Kulli-Basava index ( $$FKB^{*}_1$$ ) of fuzzy graphs is introduced, which is an extension of the classical index, by introducing a fuzzy vertex degree, fuzzy edge membership value, and fuzzy sum of the degree of incident vertices. Unlik...