191. Diversity of phytophthora species involved in new diseases of mountain vegetation in Europe with the description of phytophthora pseudogregata sp. nov.Carlo Bregant, Giovanni Rossetto, Letizia Meli, Nicolò Sasso, Lucio Montecchio, Ana Brglez, Barbara Piškur, Nikica Ogris, Lucia Maddau, Benedetto Teodoro Linaldeddu, 2023, izvirni znanstveni članek Povzetek: New and emerging Phytophthora-related diseases in small trees, shrubs and herbaceous plants typical of subalpine vegetation have recently been observed in Italy and Slovenia. Diseased plants showed a complex symptomatology including foliar necrosis, fruit rot, shoot blight and branch bleeding cankers. Since little information is available about the aetiology of these aerial Phytophthora diseases, from 2019 to 2022, field surveys were conducted in 54 sites to define the occurrence, distribution and impact of the Phytophthora species on mountain vegetation. A total of 360 Phytophthora isolates were obtained from 397 samples collected from 33 herbaceous and woody host species. Based on phylogenetic analysis and morphometric data, 17 Phytophthora species were identified: P. pseudosyringae (201 isolates), P. plurivora (54), P. gonapodyides (21), P. ilicis (20), P. alpina (17), P. acerina (11), P. cactorum (7), P. pseudocryptogea (6), P. cambivora (5), P. idaei (4), P. psychrophila (3), P. bilorbang (2), P. chlamydospora (2), P. hedraiandra (1), P. kelmanii (1), P. rosacearum (1) and P. syringae (1). In addition, three isolates of a new putative Phytophthora species obtained from Alnus viridis, Juniperus communis and Rhododendron ferrugineum are described here as Phytophthora pseudogregata sp. nov. Overall, the results highlighted an unexpectedly high diversity of Phytophthora species in mountain areas, with many species able to cause aerial infections due to the production of caducous sporangia.
Ključne besede: alpine regions, emerging disease, oomycetes, foliar necrosis, ITS clade 6, phylogeny
Objavljeno v DiRROS: 01.08.2023; Ogledov: 369; Prenosov: 259
 Celotno besedilo (6,74 MB)
Gradivo ima več datotek! Več... |
192. Mechanical, microstructural and mineralogical evaluation of alkali-activated waste glass and stone woolMajda Pavlin, Barbara Horvat, Ana Frankovič, Vilma Ducman, 2021, izvirni znanstveni članek Povzetek: Mineral waste wool represents a significant part of construction and demolition waste (CDW) not yet being successfully re-utilized. In the present study, waste stone wool (SW) and glass wool (GW) in the form received, without removing the binder, were evaluated for their potential use in alkali activation technology. It was confirmed that both can be used in the preparation of alkali-activated materials (AAMs), whether cured at room temperature or at an elevated temperature in order to speed up the reaction. The results show that it is possible to obtain a compressive strength of over 50 MPa using SW or GW as a precursor. A strength of 53 MPa was obtained in AAM based on GW after curing for 3 days at 40 °C, while a similar compressive strength (58 MPa) was achieved after curing the GW mixture for 56 days at room temperature. In general, the mechanical properties of samples based on GW are better than those based on SW. The evolution of mechanical properties and recognition of influential parameters were determined by various microstructural analyses, including XRD, SEM, MIP, and FTIR. The type of activator (solely NaOH or a combination of NaOH and sodium silicate), and the SiO2/Na2O and liquid to solid (L/S) ratios were found to be the significant parameters. A lower SiO2/Na2O ratio and low L/S ratio significantly improve the mechanical strength of AAMs made from both types of mineral wool.
Ključne besede: alkali activation, waste mineral wool, mechanical strength
Objavljeno v DiRROS: 31.07.2023; Ogledov: 295; Prenosov: 264
Celotno besedilo (9,79 MB)
Gradivo ima več datotek! Več... |
193. |
194. Poročilo o preskusu št.: LVG 2023-069 : vzorec št. 2023/00372Nikica Ogris, Špela Hočevar, Zina Devetak, Barbara Piškur, 2023, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, Geosmithia morbida, bolezen tisočerih rakov, Juglans
Objavljeno v DiRROS: 28.07.2023; Ogledov: 288; Prenosov: 0 |
195. Poročilo o preskusu št.: LVG 2023-068 : vzorec št. 2023/00364Nikica Ogris, Špela Hočevar, Zina Devetak, Barbara Piškur, 2023, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, Geosmithia morbida, bolezen tisočerih rakov, Juglans
Objavljeno v DiRROS: 28.07.2023; Ogledov: 306; Prenosov: 0 |
196. Poročilo o preskusu št.: LVG 2023-066 : vzorec št. 2023/00355Nikica Ogris, Špela Hočevar, Zina Devetak, Barbara Piškur, 2023, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, Fusarium circinatum, borov smolasti rak, Pinus
Objavljeno v DiRROS: 28.07.2023; Ogledov: 297; Prenosov: 0 |
197. The influence of calcium sulfate content on the hydration of belite-calcium sulfoaluminate cements with different clinker phase compositionsMaruša Mrak, Frank Winnefeld, Barbara Lothenbach, Sabina Dolenec, 2021, izvirni znanstveni članek Povzetek: The influence of different amounts of gypsum on the hydration of a belite-rich and a yeʼelimite-rich belite-calcium sulfoaluminate clinker (BCSA) was investigated. The hydration kinetics, phase assemblages and compressive strength development of cements prepared using yeʼelimite/ calcium sulfate molar ratios of 1, 1.5 and 2 were studied. Besides ettringite and monosulfate, aluminium hydroxide, strätlingite, C-S-H, iron-containing siliceous hydrogarnet and hydrotalcite were present as hydration products. Increasing the amount of gypsum increased the ratio of ettringite to monosulfate formed in the cement paste, lowered the amount of pore solution, delayed the dissolution of belite and ferrite, decreased the formation of strätlingite and, in the case of the yeʼelimite-rich BCSA, led to an increase in compressive strength. Increased amounts of belite in the clinker led to the formation of higher quantities of C-S-H, at the expense of straätlingite and a lower compressive strength, as belite has a lower degree of reaction than yeʼelimite and due to the formation of more C-S-H and stratlingite compared to the more space-filling ettringite. The thermodynamic model established for BCSA cement hydration agrees well with the experimental data. Compressive strength directly correlated with bound water from thermogravimetric analyses and inversely correlated with the porosity calculated from thermodynamic modelling.
Ključne besede: belite-calcium sulfoaluminate cement, gypsum, hydration, thermodynamic modelling
Objavljeno v DiRROS: 28.07.2023; Ogledov: 326; Prenosov: 243
Celotno besedilo (1,74 MB)
Gradivo ima več datotek! Več... |
198. Stresni zlomi medenice po zdravljenju z obsevanjem : pregled literatureJan Žagar, Barbara Šegedin, 2023, pregledni znanstveni članek Povzetek: Stresni zlomi medenice po obsevanju so že dolgo znana posledica obsevanja tumorjev v področju medenice. Čeprav so zlasti v področju sakruma relativno pogost pojav, je njihova diagnostika zaradi nespecifičnosti simptomov težavna. V tem preglednem članku smo pregledali literaturo, ki zajema etiologijo, incidenco, dejavnike tveganja, simptome in diagnostiko ter zdravljenje in preprečevanje stresnih zlomov medenice po obsevanju. Na podlagi pridobljenih podatkov smo poskušali strniti in predstaviti najdene ugotovitve z navedenih področij, ki bi nam bile lahko v pomoč v vsakodnevni radioterapevtski klinični praksi, saj standardiziranih priporočil na tem področju nismo našli.
Ključne besede: stresni zlomi medenice, obsevanje, incidenca
Objavljeno v DiRROS: 27.07.2023; Ogledov: 346; Prenosov: 93
Celotno besedilo (231,02 KB) |
199. Kazalniki kakovosti v radioterapijiAna Perpar, Barbara Šegedin, 2023, pregledni znanstveni članek Povzetek: Zagotovitev kakovosti v zdravstvu postaja pomembnejša dejavnost plačnikov in ponudnikov zdravstvenih storitev, prav tako mednarodne organizacije uspešno akreditacijo pogojujejo z izvajanjem programov nadzora kakovosti. Za analizo pomanjkljivosti v zagotavljanju storitev se uporabljajo kazalniki kakovosti, ki analizirajo strukture, procese in izide v zdravstvenem sistemu in s tem omogočijo načrtovanje in izvedbo izboljšav zdravstvenih storitev. V radioterapiji je tradicija nadzora kakovosti, ki se razvija vzporedno s tehnološkimi in metodološkimi spremembami na tem področju. Pri analizi izidov zdravljenja, ki so najbolj poveden kazalnik kakovosti onkoloških zdravstvenih storitev, se velikokrat srečujemo z nezanesljivostjo podatkov oz. zapletenim dostopom do njih, kar zmanjšuje ažurnost in verodostojnost rezultatov.
Ključne besede: zdravstveni sistem, zdravstvene storitve, radioterapija
Objavljeno v DiRROS: 27.07.2023; Ogledov: 328; Prenosov: 96
Celotno besedilo (141,06 KB) |
200. Potato (Solanum tuberosum) - a new host for the root-knot nematode Meloidogyne inornataBarbara Gerič Stare, Nik Susič, Maja Starovič, Saša Širca, 2022, drugi znanstveni članki Ključne besede: pathogenicity, plant-parasitic nematodes, nematodes, root-knot nematodes, potato
Objavljeno v DiRROS: 27.07.2023; Ogledov: 386; Prenosov: 156
Celotno besedilo (615,48 KB)
Gradivo ima več datotek! Več... |
