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11.
Manual for use of Al-containing residues in low-carbon mineral binders
Sabina Dolenec, Katja Malovrh Rebec, Anja Lešek, Katarina Šter, Lea Žibret, Gorazd Žibret, Klemen Teran, Emil Pučko, Ildikó Merta, Bojan Poletanovic, Elena Yaneva, Peter Kesserű, Ildikó Kovács, Bence Kószó, Alexandra Németh, Richard Laucournet, Mustafa Hadžalić, Emilija Fidanchevski, Biljana Angjusheva, Vojo Jovanov, Miloš Nenadović, Snežana B. Nenadović, Ivana Vukanac, Liljana Kraljević, Mojca Loncnar, Andrej Ipavec, 2020, slovar, enciklopedija, leksikon, priročnik, atlas, zemljevid

Povzetek: Današnje družbe si ni več mogoče predstavljati brez sodobne infrastrukture, ki temelji na uporabi različnih materialov ter zahteva veliko porabo energije. Vzporedno s proizvodnjo materialov, nastajajo ogromne količine različnih industrijskih in rudarskih ostankov (odpadki/stranski proizvodi), ki jih trenutno ne izkoriščamo, sama odlagališča pa so premalo raziskana. Cilj Evropske unije (EU) je povečati učinkovito rabo virov in ponudbo sekundarnih surovin z recikliranjem, popisom odpadkov iz rudarskih in drugih industrijskih dejavnosti ter njihova ponovna uporaba. Veliko industrijskih in rudarskih odpadkov je obogatenih z aluminijem (Al), zato lahko nadomeščajo naravne vire Al v mineralnih veznih, vendar njihova uporaba zahteva obsežno poznavanje njihovih kemijskih, mineraloških, radioloških in fizikalnih lastnosti. Priročnik, ki so ga pripravili partnerji projekta RIS-ALiCE obravnava zakonodajne vidike, ki urejajo uporabo sekundarnih surovin v gradbenih proizvodih, opis najpogostejših industrijskih in rudarskih ostankov, ki vsebujejo Al (nahajališča boksitov, rdeče blato, jeklarske žlindre, pepeli iz različnih industrij, itd.), potencial njihove ponovne uporabe in njihov ekonomski vidik, potencialne zahteve/ovire za uporabo sekundarnih surovin v cementni industriji in opis belitno-sulfoaluminatnih cementov, ki so obetavna rešitev za izvajanje krožnega gospodarstva z uporabo velikih količin odloženih industrijskih in rudarskih odpadkov, bogatih z Al.
Ključne besede: gradbeni proizvodi, ponovna uporaba, ekonomski vidik, industrija cementa, krožno gospodarstvo, industrijski odpadki, zakonodaja, elektronske knjige
Objavljeno v DiRROS: 22.01.2024; Ogledov: 158; Prenosov: 68
.pdf Celotno besedilo (4,51 MB)
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12.
The role of thyroid radiation carcinogenesis in rats
Katarina Koritnik, Andrej Cör, 1998, izvirni znanstveni članek

Povzetek: The aimof this study was to test the hypothesis on the protective role of thyroxin administration before and during irradiation on the occurrence of thyroid carcinoma in rats. Application of thyroxin before and during irradiation was expected to decrease production of thyrotropin by the hypophyseal feedback mechanism, caused by radiation damage of thyroid tissue. Stabilizing the thyroid cells in this way during irradiation would thus make them less radiosensitive. In the experiment, we first divided 81 three to fourweek old Wistar strain rats of both sexes into two groups, i.e. thyroxin (T4) and water (H2O). The T4 rats were injected 1% thyroxin solution (0.01 mg/100 g body weight) twice a day for 15 days, while the H2O rats received saline in the same way. After ten days, the two main groups were divided each into two subgroups. The rats from both irradiated subgroups (T4/X and (H2O/X) recieved 10 Gy to the neck area. They were iradiated with a telecobalt machinefor five consecutive days with one direct field. During a two years follow - up, all moribund animals were sacrificed and their thyroid glands taken. The rest of the thyroid glands were taken at the end of the experiment.All glands were pathohistologically analysed. Besides, all suspicious and enlarged extrathyroid organs and tissues were examined and the occurrence of tumors was noted. Pathohistological examination revealed the occurrence of 8 thyroid carcinomas and 7 adenomas in the H2O/X group, and 3 adenomas in the T4/X group. In the iradiated group of rats without thyroxin, significantly (P = 0.01) more thyroid carcinomas occurred than in the irradiated group without thyroxin.
Objavljeno v DiRROS: 19.01.2024; Ogledov: 169; Prenosov: 39
.pdf Celotno besedilo (380,57 KB)

13.
Temporal and spatial variability of phloem structure in Picea abies and Fagus sylvatica and its link to climate
Jožica Gričar, Jernej Jevšenak, Kyriaki Giagli, Klemen Eler, Dimitrios Tsalagkas, Vladimir Gryc, Hanuš Vavrčík, Katarina Čufar, Peter Prislan, 2024, izvirni znanstveni članek

Povzetek: Using a unique 8-year data set (2010–2017) of phloem data, we studied the effect of temperature and precipitation on the phloem anatomy (conduit area, widths of ring, early and late phloem) and xylem-ring width in two coexisting temperate tree species, Picea abies and Fagus sylvatica, from three contrasting European temperate forest sites. Histometric analyses were performed on microcores taken from tree stems in autumn. We found high interannual variability and sensitivity of phloem anatomy and xylem-ring widths to precipitation and temperature; however, the responses were species- and site-specific. The contrasting response of xylem and phloem-ring widths of the same tree species to weather conditions was found at the two Slovenian sites generally well supplied with precipitation, while at the driest Czech site, the influence of weather factors on xylem and phloem ring widths was synchronised. Since widths of mean annual xylem and phloem increments were narrowest at the Czech site, this site is suggested to be most restrictive for the radial growth of both species. By influencing the seasonal patterns of xylem and phloem development, water availability appears to be the most important determinant of tissue- and species-specific responses to local weather conditions.
Ključne besede: wood anatomy, early phloem, European beech, late phloem, Norway spruce, sieve element area, xylem-ring width
Objavljeno v DiRROS: 19.01.2024; Ogledov: 185; Prenosov: 84
.pdf Celotno besedilo (5,31 MB)
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Cene gozdarskih storitev v Sloveniji - oktober 2023
Katarina Flajšman, Matevž Triplat, 2023, strokovni članek

Ključne besede: gozdarske storitve, cene, sečnja, spravilo lesa, prevoz lesa, Slovenija
Objavljeno v DiRROS: 12.01.2024; Ogledov: 226; Prenosov: 64
.pdf Celotno besedilo (3,74 MB)

16.
Cene gozdnih lesnih sortimentov iz zasebnih gozdov na slovenskem trgu v avgustu 2023
Katarina Flajšman, Špela Ščap, 2023, strokovni članek

Ključne besede: gozdni lesni sortimenti, zasebni gozdovi, cene
Objavljeno v DiRROS: 12.01.2024; Ogledov: 181; Prenosov: 61
.pdf Celotno besedilo (6,24 MB)

17.
Trg lesnih peletov v Sloveniji v letu 2022
Katarina Flajšman, Špela Ščap, 2023, strokovni članek

Ključne besede: lesni peleti, trg, zunanja trgovina, cene, Slovenija
Objavljeno v DiRROS: 12.01.2024; Ogledov: 206; Prenosov: 69
.pdf Celotno besedilo (4,09 MB)

18.
Natural porcine interferon gamma (PoIFN gamma)
Bratko Filipič, Sonja Rozman, Katarina Carlsson, Avrelija Cencič, 1993, izvirni znanstveni članek

Povzetek: The natural porcine motogen induced gamma interferon (PoIFN gamma) was studied and compared with the human inerferons gamma (HuIFN gamma) and alpha (HuIFN alpha). A comparison was performed by the following criteria: pH 2.0 and 56 C stability, molecular weight, dot-blot reactions and cross reactivity (neutralisation index). The biological activity of porcine and human interferons in vitro (antiviral and antiproliferative) was correlated on humannontransformed (HEF) and transformed cells (FL).
Ključne besede: interferon type II-analysis, cells, cultured-drug effects
Objavljeno v DiRROS: 10.01.2024; Ogledov: 126; Prenosov: 35
.pdf Celotno besedilo (335,59 KB)

19.
Vrednotenje vplivov DPN za VE Paški Kozjak na stanje gozda in gozdarstva
Andreja Ferreira, 2023, elaborat, predštudija, študija

Ključne besede: vrednotenje, vplivi, državni prostorski načrt, vetrna elektrarna, gozdovi, gozdarstvo, Paški Kozjak
Objavljeno v DiRROS: 03.01.2024; Ogledov: 186; Prenosov: 0

20.
Effect of the cooling regime on the mineralogy and reactivity of belite-sulfoaluminate clinkers
Sabina Dolenec, Katarina Šter, Maruša Mrak, Klara Žagar, Andrej Ipavec, Lea Žibret, 2020, izvirni znanstveni članek

Povzetek: This study investigated the influence of different cooling regimes on the microstructure and consequent reactivity of belite-sulfoaluminate clinkers. The cement clinkers were synthesized by incorporating secondary raw materials, such as titanogypsum and bottom ash, to the natural raw materials. Clinker phases were determined by Rietveld quantitative phase analysis, while the distribution morphology and the incorporation of substitute ions in the phases were characterized by scanning electron microscopy using energy-dispersive X-ray spectroscopy (SEM/EDS). Clinker reactivity was studied using isothermal calorimetry and was additionally investigated through compressive strength, which was determined for the cement prepared from the synthesized clinkers. X-ray diffraction analysis showed that, as well as the three main phases (belite, calcium sulfoaluminate, and ferrite), the clinkers contained additional minor phases (mayenite, gehlenite, arkanite, periclase, and perovskite), the ratios of which varied according to the cooling regime utilized. Microscopic observations indicated that the cooling regime also influenced the crystal size and morphology of the main phases, which consequently affected clinker reactivity. Furthermore, a smaller amount of substitute elements was incorporated in the main phases when cooling was slowed. Results showed that, in comparison to clinkers cooled at slower rates, air quenched clinkers reacted faster and exhibited a higher compressive strength at 7 days.
Ključne besede: clinkers, belite, calcium sulfoaluminate, cooling, microstructure, reactivity
Objavljeno v DiRROS: 20.12.2023; Ogledov: 145; Prenosov: 63
.pdf Celotno besedilo (4,18 MB)
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