71. Vpliv radona na pojavljanje pljučnega raka v SlovenijiMojca Birk, Tina Žagar, Sonja Tomšič, Katarina Lokar, Ana Mihor, Nika Bric, Miran Mlakar, Vesna Zadnik, 2022, original scientific article Abstract: Izhodišče: Svetovna zdravstvena organizacija je opredelila radon v bivalnem okolju kot enega izmed 19 okoljskih karcinogenov. Radon je poleg tobačnega dima eden izmed najpomembnejših dejavnikov tveganja za razvoj pljučnega raka ter predstavlja približno 10-odstotni delež vseh primerov pljučnega raka. V naši raziskavi smo prvič preučili, kako radon vpliva na pojavljanje pljučnega raka v Sloveniji. Metode: Za 40-letno obdobje od leta 1978 do leta 2017 so bili na ravni naselij povezani trije viri podatkov: zboleli za pljučnim rakom (Register raka Republike Slovenije), prebivalci (Statistični urad Republike Slovenije) in Radonski zemljevid Slovenije. V modele prostorskega glajenja z Bayesovimi hierarhičnimi modeli je kot pojasnjevalna spremenljivka vključen radon v bivalnem okolju in izračunan pripisljivi delež raka. Relativno tveganje je ocenjeno s standardiziranim količnikom incidence. Rezultati: V Sloveniji za pljučnim rakom zaradi izpostavljenosti radonu v bivalnem okolju (analiza na ravni naselij) zboli približno 60 oseb letno, kar predstavlja 5 % vseh s to boleznijo. Analiza relativnega tveganja po spolu kaže, da imajo v Sloveniji zaradi izpostavljenosti radonu v bivalnem okolju povečano tveganje pljučnega raka predvsem moški. Ženske, ki bivajo na območjih, bolj obremenjenih z radonom, nimajo povečanega relativnega tveganja za nastanek pljučnega raka. Zaključek: Izpostavljenost radonu v bivalnem okolju je poleg kajenja med najpomembnejšimi nevarnostnimi dejavniki pljučnega raka v slovenski populaciji. Na območjih, kjer je radona veliko (predvsem južna in jugovzhodna Slovenija), je z javnozdravstvenega vidika ključno izvajanje preventivnih ukrepov, v prvi vrsti pa ozaveščanje in poučevanje prebivalstva o nevarnosti ter možnostih za preprečitev bolezni.
Keywords: radon, pljučni rak, pripisljivi delež, ocena tveganja
Published in DiRROS: 06.12.2022; Views: 525; Downloads: 169
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72. Influence of alkalis on the phase development of belite-sulfoaluminate clinkersBarbara Čeplak, Katarina Šter, Maruša Mrak, Luka Škrlep, Mirijam Vrabec, Sabina Dolenec, 2022, original scientific article Abstract: This paper presents a study on the influence of different amounts of alkalis (K2O and Na2O) on clinker phase formation, microstructure, phase composition and reactivity of belite-sulfoaluminate cement clinker. Using X-ray powder diffraction and scanning electron microscopy with energy dispersive spectrometry, it was found that the amount of C2S and C4AF increases with the incorporation of alkalis, while the amount of C4A3Ś and CŚ decreases. In addition to the major phases, the samples with alkalis also consist of minor phases such as C3A (tricalcium aluminate), KŚ (arcanite), and KC2Ś3 (Ca-langbeinite). The major ions in the major phases were substituted by alkali cations and some other ions (Ca2+, Al3+, Fe3+, S2-, S6+, Si4+). The alkalis also affect the microstructure of the clinker, e.g., the shape of the grains. Consequently, isothermal calorimetry was used to detect differences in hydration kinetics. The clinker with 2 wt. % K2O content was the most reactive, while the sample with 0.5 wt. % Na content was the least reactive. The latter was primarily influenced by the content of the main and minor phases of the clinker.
Keywords: BCSA clinker, microstrcuture, reactivity, alkalis, open access
Published in DiRROS: 06.12.2022; Views: 543; Downloads: 273
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73. The primary and secondary mineral resources of Montenegro and their mapping into the European data modelSlobodan Radusinović, Robert Šajn, Božica Jovanović, Duška Rokavec, Katarina Hribernik, Vasilije Abramović, Matej Draksler, Ivan Danilović, Mia Jovanović, 2022, original scientific article Abstract: Primary and secondary mineral resources are of strategic importance to the EU economy. Montenegro, as a country candidate for membership in the EU, is required to follow (and later to implement) European policies, strategies as well as initiatives, including those related to mineral resources and the mining sector. The importance of providing access to mineral raw materials in the future is recognized by the EU, as well as meeting the needs of European industry, maintaining employment and ensuring further development. Considering the overall economic situation in Montenegro, it is important to encourge the mining sector and other industries based on the use of mineral resources in making a greater contribution to the development and sustainability of society as a whole and also increase the share of national GDP.
The potential for discovery and utilization of primary and secondary mineral resources in Montenegro is demonstrated. The most important metallic mineral resources are bauxite, lead and zinc, while conventional energy resources include coal (oil and gas potential has yet to be proven). In addition, there are abundant non-metallic mineral raw materials - industrial minerals and construction materials.
Secondary mineral resources, especially aluminous red mud (bauxite residue), are also significant and have been the subject of research in recent years. Tailings from flotation processes at operating and abandoned lead and zinc mines might also be of interest for metal recovery. Bottom and flay ash from thermal power plants, slag from steel production, as well as marlstone and limestone from the hanging wall of coal deposits may also have potential. Waste rocks could be used particularly for secondary aggregate production.
A database was developed and the most important deposits of primary and secondary mineral resources in Montenegro were mapped during the RESEERVE project. Mineral data were harmonised so as to be INSPIRE compliant. In addition, some novel geochemical exploration results of secondary mineral resources are presented.
Keywords: primary and secondary mineral resources, Montenegro, RESEERVE project, European geological data platform (EGDI), INSPIRE
Published in DiRROS: 16.11.2022; Views: 444; Downloads: 170
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74. Cene gozdnih lesnih sortimentov na slovenskem trgu v novembru 2021Katarina Flajšman, Darja Stare, Špela Ščap, 2021, professional article Keywords: Slovenija, cene lesa, okrogli les, iglavci, listavci, les za kurjavo
Published in DiRROS: 12.11.2022; Views: 471; Downloads: 151
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76. Cene gozdnih lesnih sortimentov na slovenskem trgu v avgustu 2022Katarina Flajšman, Špela Ščap, 2022, professional article Keywords: gozdni lesni sortimenti, odkupne cene, okrogli les, hlodovina, zasebni gozdovi, iglavci, listavci, les za kurjavo
Published in DiRROS: 21.10.2022; Views: 545; Downloads: 175
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77. Radiation induced upregulation of DNA Sensing pathways is cell-type dependent and can mediate the off-target effectsTanja Jesenko, Maša Omerzel, Boštjan Markelc, Gregor Serša, Katarina Žnidar, Loree C. Heller, Maja Čemažar, 2020, original scientific article Keywords: DNA sensors, irradiation, immunostimulation
Published in DiRROS: 10.10.2022; Views: 489; Downloads: 255
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78. Evaluation of a novel plasmid for simultaneous gene electrotransfer-mediated silencing of CD105 and CD146 in combination with irradiationMonika Savarin, Urška Kamenšek, Katarina Žnidar, Vesna Todorović, Gregor Serša, Maja Čemažar, 2021, original scientific article Abstract: Targeting tumor vasculature through specific endothelial cell markers represents a promising approach for cancer treatment. Here our aim was to construct an antibiotic resistance gene-free plasmid encoding shRNAs to simultaneously target two endothelial cell markers, CD105 and CD146, and to test its functionality and therapeutic potential in vitro when delivered by gene electrotransfer (GET) and combined with irradiation (IR). Functionality of the plasmid was evaluated by determining the silencing of the targeted genes using qRT-PCR. Antiproliferative and antiangiogenic effects were determined by the cytotoxicity assay tube formation assay and wound healing assay in murine endothelial cells 2H-11. The functionality of the plasmid construct was also evaluated in malignant melanoma tumor cell line B16F10. Additionally, potential activation of immune response was measured by induction of DNA sensor STING and proinflammatory cytokines by qRT-PCR in endothelial cells 2H-11. We demonstrated that the plasmid construction was successful and can efficiently silence the expression of the two targeted genes. As a consequence of silencing, reduced migration rate and angiogenic potential was confirmed in 2H-11 endothelial cells. Furthermore, induction of DNA sensor STING and proinflammatory cytokines were determined, which could add to the therapeutic effectiveness when used in vivo. To conclude, we successfully constructed a novel plasmid DNA with two shRNAs, which holds a great promise for further in vivo testing.
Keywords: CD105, CD146, plasmid, gene electrotransfer
Published in DiRROS: 21.09.2022; Views: 545; Downloads: 314
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79. Trg lesnih peletov v Sloveniji v letu 2021Katarina Flajšman, Špela Ščap, 2022, professional article Keywords: lesni peleti, trg, proizvodnja, zunanja trgovina, cene, lesna biomasa, les za kurjavo
Published in DiRROS: 15.09.2022; Views: 614; Downloads: 229
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80. Cene gozdnih lesnih sortimentov na slovenskem trgu v maju 2022Katarina Flajšman, Špela Ščap, 2022, professional article Keywords: gozdni lesni sortimenti, odkupne cene, okrogli les, zasebni gozdovi, iglavci, listavci, les za kurjavo
Published in DiRROS: 15.09.2022; Views: 553; Downloads: 218
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