Institute for Physics
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Item type:Publication, Comparative analysis of different nuclear medicine techniques in evaluation of renal function(VIA MEDICA Journals, 2023)Aleksandra Peshevska, Tanja Makazlieva, Venjamin Majstorov, Lambe Barandovski, Irena Rambabova-Bushljetik, Daniela MiladinovaIntroduction: Nuclear medicine (NM) methods play an important role in the evaluation of renal function in a wide range of clinical indications. The aim of our study was to evaluate the correlation between measured GFR (mGFR) obtained by the three-plasma sample slope-intercept NM method (TPSM) — reference method vs. estimated GFR (eGFR) using Fleming’s single plasma sample method (SPSM) at 120 min, 180 min, and 240 min and correlation of reference method with eGFR with camera-based Gates’ protocol. Material and methods: A total of 82 subjects (33 male/49 female) with a mean age of 54.87 ± 15.65 years were included and mGFR value was obtained by the three-plasma sample slope-intercept NM method and eGFR was obtained with Fleming’s single sample method. eGFR was also quantified with the camera-based Gates’ protocol after i.v. application of [99mTc]Tc-DTPA. Results: Our study revealed a very strong positive significant correlation between all three SPSMs with the TPSM as the reference method. Between the Gates’ method and the TPSM in the group of patients with mGFR ≥ 61–84 mL/min/1.73 m2 and mGFR ≥ 84 mL/min/1.73 m2, a moderate positive statistically significant correlation was obtained. Conclusions: The SPSM method shows a very strong correlation with the reference and low bias in all three groups of patients and can be routinely used for GFR estimation. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Spatial distribution and isotopic signatures of N and C in mosses across Europe(Elsevier, 2025-01-01)Sheila Izquieta-Rojano, Yasser Morera-Gómez, David Elustondo, Esther Lasheras, Carolina Santamaría, Julen Torrens-Baile, Renate Alber, Lambe Barandovski, Mahmut Coşkun, Munevver Coskun, Helena Danielsson, Ludwig De Temmerman, Harry Harmens, Zvonka Jeran, Sébastien Leblond, Javier Martínez-Abaigar, Encarnación Núñez-Olivera, Roland Pesch, Juha Piispanen, Gerhard Soja, Zdravko Spiric, Trajče Stafilov, Lotti Thöni, Jesús Miguel SantamaríaThe accumulation of nitrogen (N) in moss tissue has proven to be a reliable marker of increasing N deposition. However, this measurement does not offer additional data about the origin of pollution. In this respect, the analysis of the N isotopic ratios might be a helpful tool in providing supplementary information about the nature of the nitrogenous species in biomonitoring surveys. Furthermore, isotopic signatures have been extensively used in the study of N and carbon (C) biogeochemical cycles. The main purpose of this study was to determine N and C elemental contents and their stable isotopes in mosses to investigate atmospheric pollution patterns across Europe. We aimed at identifying the main N polluted areas and evaluating the potential use of isotopic signatures in the attribution of pollution sources at a regional scale. With these objectives in mind, >1300 samples from 15 countries from Europe, all of them participants of the ICP-Vegetation programme 2005–2006, were analyzed for their C and N contents and δ15N and δ13C. The results were compared to those derived from EMEP model, which provided modeled deposition and emission data, as well as to the predominant land uses at the sampling sites (based on CORINE Land Cover). This evaluation suggests that additional measurements of stable C and N isotopes in mosses could be a valuable tool in European environmental surveys. Such measurements not only provide useful information for identifying probable pollution sources but also enable the quantification of their contributions, serving as biological indicators of significant environmental processes. This study presents the first quantitative assessment of major atmospheric nitrogen (N) sources based on stable isotope analysis on a European scale, establishing a framework for evaluating historical changes in N across the region. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Mercury Pollution in Terrestrial Ecosystems of North Macedonia: Insights from an 18-Year Moss Biomonitoring Programme(MDPI, 2025-12-22)Katerina Bačeva Andonovska, Robert Šajn, Jasminka Alijagić, Trajče Stafilov, Lambe BarandovskiMoss biomonitoring was conducted in 2002, 2005, 2010, 2015 and 2020 to evaluate atmospheric mercury (Hg) deposition across N. Macedonia as part of a comprehensive survey of potentially toxic elements (PTEs). More than 70 samples of the dominant moss species Hypnum cupressiforme and Homalothecium lutescens were collected during the summer field campaigns. Mercury concentrations were determined using cold vapour atomic absorption spectrometry and inductively coupled plasma mass spectrometry (ICP-MS). The results revealed marked temporal fluctuations: median Hg content increased from 56 µg/kg in 2002 to 68 µg/kg in 2005, peaked at 93 µg/kg in 2010, then decreased to 84 µg/kg in 2015, and further to 52 µg/kg in 2020. Over the study period, Hg concentrations ranged from 10 to 595 µg/kg, with the highest variability observed in 2010. Spatial distribution maps and regional comparisons indicate that elevated Hg contents correspond predominantly to anthropogenic sources, particularly in industrialised zones and regions affected by mining and metallurgical activities. The 2020 dataset shows a significantly lower median value (52 µg/kg) compared to previous surveys, indicating a slight improvement in air quality, although local hotspots persist. These results highlight the importance of long-term moss biomonitoring as a cost-effective approach for tracking atmospheric mercury trends and informing national environmental policy. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Spin states of X-complex asteroids in the inner main belt -- I. Investigating the Athor and Zita collisional families(2024-10) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access to diagnostic imaging and radiotherapy technologies for patients with cancer in the Baltic countries, eastern Europe, central Asia, and the Caucasus: a comprehensive …(The Lancet, 2024-11)Manjit Dosanjh, Vesna Gershan, Eugenia C Wendling, Jamal S Khader, Taofeeq A Ige, Mimoza Ristova, Richard Hugtenburg, Petya Georgieva, C Norman Coleman, David A Pistenmaa, Gohar H Hovhannisyan, Tatul Saghatelyan, ... et.al. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Conceptual design of sandwich walls for shielding against secondary neutrons using MC simulations with FLUKA(Elsevier, 2024-12)Redona Bexheti, Mimoza Ristova - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effect of vegetable fat on the texture, colour and sensory properties of Macedonian white brined cheese(Croatian Dairy Union, 2020-12-14) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Tunable high-Q resonator by general impedance converter(AIP Publishing, 2021-02-01) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Lightcurve analysis of asteroid 15691 Maslov using NAO Rozhen observations and sparse data(Institute of Astronomy and NAO 72 Tsarigradsko Shosse Blvd., BGN-1784 Sofia, Bulgaria, 2023);