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Kragujevac Journal of Science
ISSN 1450-9636 · University of Kragujevac, Faculty of Science · 251 artikel di indeks
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The impact of a small hydropower plant (SHP) on benthic algae, macroinvertebrate community and ichthyofauna of the Panjica River (Serbia)
The impact of a small hydropower plant (SHP) on aquatic communities (benthic algae, macroinvertebrates and ichthyofauna) and water quality was investigated in the Panjica River (Serbia). The field research was conducted at three localities in November 2024. The results showed differences in…
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Balancing phytoremediation and food safety: Assessing heavy metal accumulation in selected plants from two localities in Serbia
This study explored the relationship between soil properties and heavy metal concentrations in soil and selected plants from Kopaonik National Park and the Aleksandrovac municipality in Serbia. Soil samples were analyzed for texture, basic chemical properties, and the plant-available fraction of…
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Aquatic macroinvertebrate communities as indicators of water quality in the Raška River
This study was conducted to determine the water quality of the Raška River based on physical and chemical parameters and the community of aquatic macroinvertebrates as bioindicators. The research was conducted in August 2023 at six sites. A total of 61 taxa of aquatic macroinvertebrates were…
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Impacts of the moving magnetic field on the second-grade hybrid nanofluid flow through a porous matrix in a symmetric channel
The overwhelming applications of hydromagnetic flows of hybrid nanofluid and second-grade nanofluid in advanced nanotechnology and biomedical fields motivated this research work. This paper explores the heat transfer in unsteady hydromagnetic flows of Titanium Oxide-Copper Oxide-Engine Oil…
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Eurasian eagle-owl Bubo bubo (Linnaeus, 1758) (Aves: Strigidae) in Eastern Serbia in the 21st century: Distribution, population size and density
The Eurasian Eagle-owl represents a widely distributed but locally scarce apex predator whose biology and ecology in Serbia remain understudied. Here, we examined the spatial and altitudinal distribution, population size, and territory density of this species in Eastern Serbia. Our surveys…
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Floristic diversity in the Brdjani gorge: Assessment of endangerment and conservation measures
The aim of this study is to better understand the floristic composition of the Brdjani Gorge serpentinite habitat, focusing on diversity, conservation status and possible conservation strategies for specific plant groups. The results show that the gorge area is populated by 119 plant species…
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Femtosecond laser-induced breakdown in water-like tissues: Influence of wavelength and pulse duration on electron dynamics
This study explores the initiation mechanisms of laser-induced breakdown in water-like tissues by examining the impact of ultra-short laser pulses at varying wavelengths. Using numerical simulations, we analyse the electron dynamics triggered by pulse durations from 1 fs to 150 fs at two specific…
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Examination of the optical purity of voriconazole on the brush-type stationary phase
The purpose of this research is to develop an HPLC method for determining the content of voriconazole enantiomers in powder for solution for infusion. Chromatographic analysis was conducted using a brush-type (Pirkle-type) stationary phase with isocratic elution. The mobile phase comprised a…
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Cytotoxic potential of novel N-formyl pyrazolines derived from vanillin
In the reaction of vanillin and acetone under Claisen-Schmidt conditions, dehydrozingerone, a very attractive biologically active compound, is obtained. This compound served as a starting material for the synthesis of O-alkyl derivatives which further react with hydrazine hydrate in formic acid…
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Matrix metalloproteinase 9 genotype modulates asthma control in pediatric asthma patients
Matrix metalloproteinases, particularly MMP9, play a pivotal role in asthma pathology by influencing extracellular matrix remodeling and inflammation. This study examined 100 Serbian pediatric asthma patients to explore the correlation between MMP9 3' UTR polymorphisms and MMP9 protein levels, and…
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The southern swallowtail, Papilio alexanor Esper, 1800 (Lepidoptera: Papilionidae): New butterfly species for the fauna of Serbia
This article reports the first finding of the Southern Swallowtail, Papilio alexanor Esper, 1800 (Lepidoptera: Papilionidae) in Serbia. The butterfly fauna of Serbia now comprises 202 species. A single male specimen was collected on May 9th, 2025, on a warm, dry serpentinite slope in southwestern…
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On Euler-Sombor index of benzenoids and phenylenes
The Euler-Sombor index of a graph, EU(G), is a recently introduced vertex-degree based topological index. It is derived from the geometric consideration of a graph. In this paper, we provide general formulae for the computation of EU(G), for a molecular graph representing a benzenoid or phenylene…
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Comparison of butterfly diversity (Lepidoptera: Papilionoidea) of the Pčinja and Preševo valleys (South Serbia)
Due to the influence of the Mediterranean climate from the southern part of the Balkan Peninsula, the southernmost regions, the Pčinja and Preševo valleys, are the warmest in Serbia. This warm sub-Mediterranean climate affects the area's specific animal diversity, particularly contributing to a…
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Allelopathic effects of Cynometra ramiflora L. (Fabaceae) in the seed germination of Brassica rapa L. (Brassicaceae) as model organism
The study evaluated the potential allelopathic effects of the aqueous extract of a native plant, Cynometra ramiflora L. in the seed germination of Brassica rapa L. Seed germination was observed for 12, 24, and 48 hours after treatment (HAT) and radicle lengths were measured after 48 HAT. Results…
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Phytochemical screening of Ceratophyllum demersum L. extracts and evaluation of their antioxidative and antimicrobial potentials
Phytochemical screening, antioxidant and antimicrobial activities of water, ethanol and ethyl-acetate extracts of Ceratophyllum demersum L. were tested. In order to define a chemotype of C. demersum chemical composition of ethyl-acetate extract was determined. The major constituents of the…
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Risks of accidental introductions of venomous snakes into cities and semi-urban areas in Serbia: Review of media-published cases between 2017 and 2025
In the past decade, multiple incidents have been documented involving the presence of venomous snakes in urban regions of Serbia, where these animals are typically absent. We analyzed the confirmed cases in major cities such as Belgrade, Novi Sad, Niš, Kragujevac, and Kraljevo, along with…
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Green synthesis, characterisation and antibacterial activity of zinc oxide nanoparticles using Persea americana Mill. aqueous seed extract
The avocado seed is a non-edible part of the fruit that is typically discarded as waste; yet it has valuable phytochemicals. A phytochemical screening of the aqueous extract from avocado seeds was conducted under controlled experimental conditions using standard methods. The results indicated the…
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Comparative effects of ciprofloxacin and prednisolone on renal function markers in a TNBS-induced Crohn's disease rat model
Crohn's disease (CD) is a chronic inflammatory bowel disorder characterized by mucosal inflammation and systemic complications, including renal impairment. This study investigated the comparative effects of ciprofloxacin and prednisolone on renal function markers, electrolyte balance, oxidative…
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Assessment of potentially toxic elements in fish from Aleksandrovac reservoir after a mass mortality
Small water bodies are particularly vulnerable to environmental disturbances, with fish mass mortality increasingly associated with anthropogenic stressors. This study researches the potential role of potentially toxic elements (PTEs) in the mass fish die-off in December 2012 at the Aleksandrovac…
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Neural reconnection after exposure in high frequency electromagnetic fields: In vivo study
Change in cytoarchitecture and reconnection of neurons in rats' brain under direct two months high frequency electromagnetic field (HFEMF) exposure has been found, supported with data and discussed. HFEMF used in the experiment had the following characteristics: 2.0 GHz frequency, 0.015 A/m…