151. Minimalno invazivni diagnostični pristopi pri primarnih možganskih tumorjih z uporabo prosto cirkulirajočih nukleinskih kislinMarija Skoblar Vidmar, Jernej Mlakar, Uroš Smrdel, Alenka Matjašič, Jože Pižem, Andrej Zupan, 2021, objavljeni znanstveni prispevek na konferenci Ključne besede: tekočinska biopsija, onkološko zdravljenje, možganski tumorji Objavljeno v DiRROS: 04.04.2022; Ogledov: 677; Prenosov: 264 Celotno besedilo (123,97 KB) |
152. Chemical and isotopic composition of CO2-rich magnesium- sodium-bicarbonate-sulphate-type mineral waters from volcanoclastic aquifer in Rogaška Slatina, SloveniaNina Rman, László Palcsu, Andrej Lapanje, Teodóra Szőcs, 2022, izvirni znanstveni članek Povzetek: Bottled natural mineral waters from an andesitic aquifer in Slovenia are enriched in magnesium (1.1 g/l), sulphate (2.2 g/l) and dissolved inorganic carbon (204 g/l). We analysed major ions, trace elements, tritium activity, 14 C, d18 OH2O , d2 HH2O, d13 CDIC, gas composition and noble gases in six wells. In addition, 87 Sr/ /86 Sr, d34 SSO4 and d11 B were analysed here for the first time. Stable isotopes with d18 O = -11.97 to -10.30% and d2 H = -77.3 to -63.8 confirm meteoric origin. CO2 degassing is evident at three wells, causing the oxygen shift of about -1.3%. Tritium activity was detectable only in the shallowest well, where the freshwater component was dated to the 1960s. d13 CDIC in five waters is -1.78 to ? 1.33%, typical of carbonate dissolution. Radiocarbon is low, 1.03–5.16 pMC. Chemical correction with bicarbonate concentration and d13 C correction methods gave best mean residence times, slightly longer than previously published. Sulphate has d34 S 26.6–28.9% and d18 O 8.9–11.1% due to dissolution of evaporites in carbonate rocks. Boron at concentrations of 1.2–6.1 mg/l has two origins: d11 B = 11.3–16.4% from hydrothermal alteration and d11 B = 26.6–31.7% from carbonate dissolution. Strontium at concentrations of 0.5–22.0 mg/l has 87 Sr/ /86 Sr, indicating three sources: 0.7106 for Miocene clastic rocks, 0.7082 for Triassic carbonates and 0.7070 for Lower Oligocene andesitic rocks. CO 2 represents the majority of the dissolved ([ 98.84 vol%) and separated gas ([ 95.23 vol%). Methane is only found in two wells with a max. of 0.30 vol%. All waters show excess helium and 16–97% of mantlederived helium. Since all show subsurface degassing, the paleo-infiltration temperature could not be calculated. Ključne besede: natural tracers, carbon, sulphur, strontium and boron isotopes, noble gases Objavljeno v DiRROS: 24.03.2022; Ogledov: 832; Prenosov: 274 Celotno besedilo (3,11 MB) |
153. Catalytic hydrocracking reactions of tetralin biomass tar model compound to benzene, toluene and xylenes (BTX) over metal-modified ZSM-5 in ambient pressure reactorAndrii Kostyniuk, David Bajec, Blaž Likozar, 2022, izvirni znanstveni članek Ključne besede: catalytic hydrocracking reactions, ring opening mechanism, model biomass tar, benzene/toluene/xylenes (BTX), metal-doped HZSM-5 zeolite material, deposited coke deactivation Objavljeno v DiRROS: 10.03.2022; Ogledov: 756; Prenosov: 567 Celotno besedilo (5,34 MB) Gradivo ima več datotek! Več... |
154. Geophysical investigations in the Radovna River Spring area (Julian Alps, NW Slovenia)Anja Torkar, Marjana Zajc, Jure Atanackov, Andrej Gosar, Mihael Brenčič, 2021, izvirni znanstveni članek Povzetek: The Radovna River Valley is located in the north-western part of Slovenia in the Julian Alps, where there is an extensive intergranular aquifer whose depth to pre-Quaternary bedrock is unknown. Therefore, to obtain information about the depth of the valley and the geometry of the aquif er two geophysical methods were used in our study; ground penetrating radar (GPR) and seismic reflection method. The low-frequency GPR method has shown to be useful for determining the depth of the groundwater and the predominant groundwater recharge. Also, the high-resolution seismic method provided an insight about the morphology of the pre-Quaternary basement with the deepest point at 141 meters below surface. Measurements of hydrogeological parameters such as groundwater level and river discharge measurements were carried out in the study area. Both data analyses showed that groundwater level and river discharge are highly fluctuatingand rapidly changing, indicating a well-permeable aquifer, implying that such an aquifer is extremely sensitive and vulnerable to extreme climate events. Both the geophysical methods and the hydrogeological information have provided important information about the morphology of the valley and the alluvial aquifer, as well as increasing the knowledge about the Radovna springs system, which will contribute very important information for future hydrogeological studies. Ključne besede: Ground penetrating radar, Seismic reflection method, Radovna spring, hydrogeology, aquifer geometry, glacial valley, groundwater table Objavljeno v DiRROS: 09.03.2022; Ogledov: 826; Prenosov: 330 Celotno besedilo (6,27 MB) |
155. Sistem opredelitve rabe tal na ploskvah nacionalne gozdne inventure 2022 (gozd/drugo gozdno zemljišče/negozd) : seminar : online seminar v organizaciji Oddelka za načrtovanje in monitoring gozdov in krajine, Gozdarski inštitut Slovenije, Ljubljana, 31. 1. in 1. 2. 2022, onlineAnže Martin Pintar, Andrej Grah, Mitja Skudnik, 2022, druga izvedena dela Ključne besede: gozdarstvo, gozdovi, negozd, definicija gozda, druge gozdne površine, nacionalna gozdna inventura, gozdna inventura, fotointerpretacija, gozdni rob, raba tal, terenski popis Objavljeno v DiRROS: 24.02.2022; Ogledov: 992; Prenosov: 0 |
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158. Primerjava različnih regresijskih modelov za napovedovanje debelinskega priraščanja jelkeAndrej Ficko, Vasilije Trifković, 2021, izvirni znanstveni članek Povzetek: V prispevku na primeru jelke predstavljamo sedem regresijskih modelov za modeliranje priraščanja dreves s podatki periodičnih meritev na stalnih vzorčnih ploskvah. Poleg polinomske regresije, modela z dodanim šumom in mešanega linearnega modela, predstavljamo regresijo z naravnimi zlepki in tri modele z omejenimi odvisnimi spremenljivkami: truncated regression, tobit regression in grouped data regression. Modele lahko uporabimo, kadar se zaradi načina merjenja in zaokroževanja podatkov ter hierarhičnosti podatkov srečamo z rezanimi ali krnjenimi slučajnostnimi spremenljivkami, nezveznostjo odvisne spremenljivke in pristransko oceno prirastka. Pri pojasnitvi debelinskega priraščanja 21.013 jelk na 4.405 ploskvah v obdobju 1990–2014 v raznomernih gozdovih v dinarskih jelovo-bukovjih so vsi modeli pokazali podoben vpliv prsnega premera, sestojne temeljnice, temeljnice debelejših dreves, raznomernosti, nagiba, nadmorske višine in le manjše razlike v regresijskih koeficientih in merah prileganja. Največje povprečne napovedi prirastka daje tobit model, mešani model pa se najbolj prilega podatkom. V primerjavi z drugimi modeli model z zlepki kaže na počasnejše zmanjševanje prirastka zelo debelih jelk po kulminaciji prirastka. Ključne besede: prirastek, multipla regresija, statistične metode, tobit model, krnjenje, mešani modeli, jelka, modeli z omejenimi odvisnimi spremenljivkami, stalne vzorčne ploskve Objavljeno v DiRROS: 01.12.2021; Ogledov: 3399; Prenosov: 1959 Celotno besedilo (2,97 MB) Gradivo ima več datotek! Več... |
159. Analiza učinkovitosti hiperbarične in radijsko frekvenčne terapije športnih mikropoškodb : končno poročilo o rezultatih raziskaveBoštjan Šimunič, Jan Čžan Stermšek, Monika Doles, Andrej Švent, 2021, končno poročilo o rezultatih raziskav Ključne besede: športniki, vadba, intenzivna vadba, bolečine, hiperbarična terapija, radijsko frekvenčna terapija Objavljeno v DiRROS: 12.11.2021; Ogledov: 1154; Prenosov: 292 Celotno besedilo (488,60 KB) |
160. Gozd in les kot priložnost za regionalni razvoj : Festival lesa, Kočevje, 20192019, zbornik strokovnih ali nerecenziranih znanstvenih prispevkov na konferenci Ključne besede: lesarstvo, klimatske spremembe, Slovenija, gozdovi, gozdnogospodarsko načrtovanje, državni gozdovi, raba zemljišč, les, ekosistemske storitve, lesnopredelovalna industrija, krožno gospodarstvo, trajnostni razvoj, zborniki Objavljeno v DiRROS: 10.11.2021; Ogledov: 1437; Prenosov: 1063 Povezava na celotno besedilo Gradivo ima več datotek! Več... |