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Scientific African
Scopus
ISSN 2468-2276 · Elsevier · 3.414 artikel di indeks
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Artikel Jurnal
Designing advanced luminescent materials via imidazole incorporation: Integrated experimental and DFT/TD-DFT analysis
A new polysubstituted pyridine derivative, 2,6-diimidazol-4-carbazol-3,5-dichloro-pyridine (compound 3), was synthesized by functionalizing the reference molecule 4-(carbazol-9-yl)-3,5-dichloro-2,6-difluoropyridine (compound 2) with two imidazole groups. The structure was confirmed by NMR ( 1 H, 13…
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Artikel Jurnal
Neuroprotective plant-derived compounds via their anti-cholinesterase activity: Therapeutic potential in Alzheimer's disease
Alzheimer's disease (AD) is a complex neurodegenerative disorder characterized by progressive cognitive decline, with cholinergic dysfunction representing a central pathological feature. Current cholinesterase inhibitor therapies offer only modest symptomatic relief and are frequently limited by…
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Artikel Jurnal
Three-stage DG–ESS planning using Tianji’s horse racing optimization for hosting capacity enhancement in radial distribution networks
Distributed generation based on renewable energy sources is expanding rapidly in African and global distribution networks. Still, its hosting capacity is often constrained by voltage violations, thermal overloads, and increased technical losses. This paper proposes a three-stage planning framework…
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Artikel Jurnal
Integrated management of mine tailings: From characterization, environmental behavior, valorization, and dewatering within a circular economy framework - A review
The mining industry generates enormous quantities of waste, particularly tailings estimated at 3.44 to 4 billion tonnes annually worldwide produced during the ore processing stage, which require integrated management strategies to reduce environmental risks while enabling sustainable resource…
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Artikel Jurnal
Explainable machine learning for predicting women’s FP status in Ethiopia
Introduction: Studying the complex and nonlinear relationships among variables and women’s FP status helps women’s reproductive health and decision-making. Studies in Ethiopia do not address this issue and have largely relied on descriptive statistics and regression models. This study applied…
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Artikel Jurnal
A 5E framework for hybrid solar dryers: Constraint relocation, transferred burdens, and boundary-sensitive assessment with application to Sub-Saharan Africa
Hybrid solar dryers improve process continuity but transfer requirements to auxiliary energy, exergy destruction, lifecycle cost, maintenance, and deployment support. Existing assessments remain fragmented across technical, thermodynamic, economic, environmental, and enabling dimensions. Such…
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Artikel Jurnal
Knowledge and perception of Mpox among sexual and gender minorities in Nigeria: A cross-sectional survey
Background/objectives: The 2022 global mpox outbreak revealed newer epidemiologic trends with mpox predominantly affecting men who have sex with men (MSM). This discovery underscores a critical need to understand mpox knowledge among sexual and gender minorities (SGM) in mpox high-burden countries…
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Artikel Jurnal
Dynamical behavior of a fractional order model of toxoplasmosis infection on a complex heterogeneous network
In this work, a new fractional order model of toxoplasmosis on a complex heterogeneous network is proposed to reflect the interactions between human and cat populations. An analysis of the existence of disease-free and endemic equilibria is presented. In order to evaluate the epidemic threshold…
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Artikel Jurnal
Direct prediction and global analysis of the geometrically nonlinear response of beams carrying concentrated masses
The geometrically nonlinear vibration of beam-like structures is highly sensitive to the presence of localized masses, particularly when the vibration amplitude becomes large enough for axial stretching to affect the transverse response. This work develops a computational approach for analysing and…
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Artikel Jurnal
Workload resets and vacation-driven congestion in continuous-flow service systems: A steady-state fluid queueing analysis under catastrophe
This paper presents an analytical study of a fluid queueing model driven by an M/M/1 system with homogeneous exponential server vacations and catastrophic reset events. The novelty of the proposed model lies in the integration of vacation dynamics and instantaneous catastrophic clearing within a…
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Artikel Jurnal
An entropy transformed inverse rayleigh gompertz model under NHPP framework with SVM–GA estimation
Modelling the lifetime data from these types of products is still a challenge due to the fact that the distribution cannot be assumed to be Gaussian with a significant right skew. This study is an extension of lifetime modelling by proposing an Entropy-Transformed Inverse Rayleigh–Gompertz (EIRG)…
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Artikel Jurnal
Ground-truth reconstruction for photovoltaic fault prognosis: Circularity assessment, leakage-free evaluation and architectural benchmarking
Photovoltaic fault classification studies commonly report accuracies above 95 %, yet label provenance and data partitioning are rarely examined; we address both using an original dataset of 226,175 one-second observations acquired over twelve non-consecutive sessions from a dual-module physical…
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Artikel Jurnal
Human capital and regional value chains in Southern Africa’s automotive sector: A pathway to industrial competitiveness
This study examines the impact of human capital on regional automotive value chains, emphasizing Tier‑specific and exporter–importer differences in human‑capital effects, and recognizing that skill needs differ across production Tiers (raw materials, components, and assembly) and between firms…
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Artikel Jurnal
ResNet-101 and RegNetX-400MF feature fusion with k-means relabeling for photovoltaic electroluminescence defect classification
Photovoltaic (PV) cell defects can be inspected using electroluminescence images, but training reliable classifiers is difficult when the labels in a dataset are not clear. In the Electroluminescence Photovoltaic (ELPV) dataset, many cells are given intermediate defect probabilities, meaning they…
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Artikel Jurnal
Integration of digital twin and IoT for virtual greenhouse management
The convergence of Digital Twin (DT) and Internet of Things (IoT) technologies represents a key enabler of Agriculture 5.0, providing real-time synchronization between physical and virtual environments. When coupled with Virtual Reality (VR), these technologies enable immersive and interactive…
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Artikel Jurnal
Road network sustainability: a scenario-based approach to maintenance & rehabilitation planning
The present research develops a robust network-level pavement maintenance and rehabilitation (M&R) planning model with uncertainties of pavement condition and the available budget. It uses Mulvey robust optimization methodology and incorporates the uncertainty in the mathematical formulation to…
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Artikel Jurnal
Hydrogeochemical and isotopic characterization of groundwater and surface water resources in crystalline aquifers of Bafia, Cameroon
This research investigates the hydrogeochemical processes and recharge mechanisms governing groundwater and surface water in the fractured crystalline aquifers of Bafia, Cameroon, using a combination of hydrogeochemical, isotopic and statistical methods. Besides the poorly characterized nature of…
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Artikel Jurnal
Physically constrained multi-task CNN–GRU framework for simultaneous SOC and SOH estimation
Reliable estimation of the state of charge (SOC) and state of health (SOH) is essential for the safe and efficient operation of lithium-ion battery management systems. Although recent deep-learning methods have improved estimation accuracy, many approaches treat SOC and SOH as independent tasks and…
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Artikel Jurnal
Geochemical assessment and ecological-human health risk of potentially hazardous elements in sediments from the Lom-Midal drainage system, South Eastern Cameroon
The Lom-Midal area in south eastern Cameroon is ecologically important but increasingly threatened by rise in potentially hazardous elements (PHEs) pollution from crustal geogenic and anthropogenic inputs. This study analyzed the geospatial distribution, eco-health risks and possible sources of 12…
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Artikel Jurnal
Burden and determinants of blood donor deferral in a tertiary hospital in Ghana: A retrospective cross-sectional study
Background: Blood donor deferral is an essential safeguard for donor and recipient safety; however, in settings with constrained donor pools, high proportions of ineligible prospective donors may further limit the number of donations available for collection. Comprehensive data on deferral patterns…
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