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A transmission length limit for space division multiplexing in step-index silica optical fibers
(Taylor & Francis, 2019-08-28)
By solving the power flow equation, we investigate the influence of mode coupling on space division
multiplexing capability of three multimode step-index silica optical fibres with a different strengths
of mode coupling. ...
Effective doses estimated from the results of Direct Radon and Thoron Progeny Sensors (DRPS/DTPS), exposed in selected regions of Balkans
The main contribution to population exposure is due to radon and thoron progenies and not radon itself. The aim of this study was therefore to estimate annual effective dose using the results of Direct Radon and Thoron ...
Spa environments in central Serbia: Geothermal potential, radioactivity, heavy metals and PAHs
This study aims to estimate geothermal potential, radioactivity levels, and environmental pollution of sixmost popular spas in Central Serbia (Ovcar, Gornja Trepca, Vrnjacka, Mataruska, Bogutovacka and Sokobanja), as well ...
Plant uptake and soil retention of radionuclides and metals in vineyard environments
In most European countries, each adult citizen drinks on averagemore than 20 L of wine every year. Three popular wine-growing areas (Aleksandrovac, Topola, and Orahovac) in Serbia were studied in order to investigate the ...
Identification of high radon dwellings, risk of exposure, and geogenic potential in the mining area of the “TREPČA” complex
This study was performed to investigate radon levels in dwellings in the mining area
near the town of Kosovska Mitrovica. The Passive radon technique based on the charcoal
canister test kit conducted in summer and autumn ...
Environmental risk assessment of radioactivity and heavy metals in soil of Toplica region, South Serbia
(Springer, 2018-03-13)
Activity levels of natural and artificial radionuclides and content of ten heavy metals (As, Cd,
Co, Cr, Cu, Mn, Ni, Pb, Zn and Hg) were investigated in 41 soil samples collected from Toplica region located in the south ...
Mosses as bioindicators of radionuclide and metal pollution in northern Kosovo and Metohija mountain region
The study investigates mosses (Hypnum cupressiforme Hedw.) as bioindicators of pollution in three non-urban mountain areas of northern Kosovo and Metohija regions. Concentrations of radionuclides and metals were measured ...
Environmental radioactivity with respect to geology of some Serbian spas
(Springer, 2018-05-17)
This study was performed in order to investigate gamma dose rates, radon exhalation rates and soil radioactivity with respect to geology. Fifteen locations in three Serbian spas were under investigation. Gamma dose rate ...
Radon levels and indoor air quality after application of thermal retrofit measures - a case study
This study was conducted toevaluate the influence of thermal retrofit on radon levels in workrooms,and to determine whetherthe radon concentrationin the building changes after the application of retrofit measures.In thefirst ...
The total curvature of knots under second-order infinitesimal bending
(World Scientific Publishing Co. Pte. Ltd., 2019-01-03)
In this paper, we consider infinitesimal bending of the second-order of curves and
knots. The total curvature of the knot during the second-order infinitesimal bending is
discussed and expressions for the first and the ...