11. Aggregates obtained by alkali activation of fly ash : the effect of granulation, pelletization methods and curing regimesOgnjen Lj. Rudić, Vilma Ducman, Mirjana Malešev, Vlastimir Radonjanin, Suzana Draganić, Slobodan Šupić, Miroslava Radeka, 2019, original scientific article Abstract: This paper presents results regarding the phase composition, microstructure and textural properties of two types of aggregates, which were prepared via crushing or pelletization of alkali-activated Class F fly ash and cured under different conditions. The alkali activator was the same for aggregate products, containing an alkaline solution consisting of 8 M NaOH and Na-silicate (8 M NaOH/Na-silicate = 1:2.5 mass ratio). The aforementioned properties were influenced by two different preparation procedures combined with varying curing regimes (under normal conditions at 20 %C, RH 40%60% for 28 and 120 days and under an accelerated regime, at 65 %C for 5 days). Aggregates were characterized using X-ray diffraction (XRD), Fourier-transform transmission infrared spectroscopy (FTIR), back scattered electron microscopy with energy dispersive spectrometer (BSE-EDS) analyses and mercury intrusion porosimetry (MIP). The results showed noteworthy structural and textural diversities between the two types of aggregate. The method of preparation and curing regime affected the formation of the N-A-S-H structure and the texture of the alkali-activated fly ash product, with the crushing method giving an advantage
Keywords: alkali activation, agregat, FTIR
Published in DiRROS: 14.09.2023; Views: 232; Downloads: 134
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12. Sistemsko dopolnilno zdravljenje kožnega melanoma : imunoterapija in tarčna terapijaMirjana Amon, Martina Reberšek, 2023, published scientific conference contribution Abstract: Melanom je maligni tumor melanocitov. Melanociti so celice, ki proizvajajo pigment melanin in izhajajo iz celic nevralnega grebena. Večina melanomov nastane v koži, sicer lahko nastanejo na vseh lokalizacijah, kjer migrirajo celice nevralnega grebena, kot so na primer sluznice, okularni uvealni trakt ali CŽS. Manj kot 5% kožnih rakov so maligni melanomi, ki sodijo v skupino kožnih rakov z najslabšo prognozo. Zaradi svoje agresivne narave ima najvišjo stopnjo smrtnosti med vsemi kožnimi raki (80%). Zgodnje odkritje melanoma in njegovo pravočasno zdravljenje pomembno vplivata na prognozo same bolezni.
Keywords: rak kože, melanom, sistemsko zdravljenje
Published in DiRROS: 17.05.2023; Views: 299; Downloads: 110
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13. Contrasting responses of alien and ancient forest indicator plant species to fragmentation process in the temperate lowland forestsMirjana Šipek, Lado Kutnar, Aleksander Marinšek, Nina Šajna, 2022, original scientific article Abstract: Fragmentation is one of the major threats to biodiversity. In a fragmented landscape, forest specialists are losing suitable forest habitats with specific site and microclimate conditions, which results in their local extinction. Conversely, the invasion of alien species is facilitated by open forest areas and increased boundaries between forest fragments and adjacent land. We studied the effect of fragmentation in terms of fragment size impact on overall plant species richness and on selected ecologically important groups' richness, composition, and diversity. We surveyed vegetation in the interior of 47 fragments of various sizes and one unfragmented reference forest. Our results reveal that the effect of fragmentation is complex and differs for studied plant groups. Decreasing fragment size negatively affects the overall plant richness and richness of native and ancient forest indicator plants as well as their diversity, while the effect is positive for alien plants. The highest proportion of ancient forest indicator plant species and the lowest proportion of alien plants in the unfragmented forest underline the great conservation value of forest fragments. At the same time, our results reveal that large and diverse forest ecosystems are susceptible to biological invasions as well.
Keywords: forest fragment, indicator plants, invasion, diversity, habitat modification, habitat conservation
Published in DiRROS: 15.05.2023; Views: 336; Downloads: 184
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15. Obravnava utrudljivosti kot posledice raka in zdravljenja raka – klinični primerMirjana Amon, Martina Reberšek, 2022, published scientific conference contribution Abstract: Utrudljivost je zelo pogosta pri bolnikih z rakom in pomembno vpliva na njihovo kvaliteto življenja. Predstavlja najpogostejši stranski učinek zdravljenja raka. Njena osnovna značilnost je, da ne izzveni po počitku ali spanju. Veliko število bolnikov z rakom (80-90%) navaja težave z občutkom utrujenosti, kar je najbolj izraženo tekom sistemskega zdravljenja. Glede na čas trajanja razlikujemo: akutno utrudljivost, ki traja do štiri tedne in kronično utrudljivost, ki traja več kot štiri tedne do nekaj mesecev ali ves čas zdravljenja. V nadaljevanju je opisan primer bolnice z napredovalim, metastaskim melanomom levega očesa, z metastazami v jetrih, pri kateri je prišlo do razvoja utrujenosti ob hudi insuficienci nadledvične žleze, povzročene z imunoterapijo.
Keywords: neželeni učinki, bolniki, sistemsko zdravljenje
Published in DiRROS: 23.01.2023; Views: 389; Downloads: 102
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16. Novosti v sistemskem zdravljenju napredovalih metastatskih karcinomov biliarnega trakta : prikaz primeraMirjana Amon, Martina Reberšek, 2022, published scientific conference contribution Abstract: Holangiokarcinom je razmeroma redka oblika raka (manj kot 1% vseh malignomov), je heterogena skupina malignih bolezni. Glede na lokalizacijo razlikujemo: intrahepatični in ekstrahepatični (perihilarni in distalni) rak žolčnih vodov. Anatomska lokalizacija tumorja vpliva na molekularne karakteristike samega tumorja, na pristop pri zdravljenju in prognozo. V nadaljevanju je opisan primer bolnika z napredovalim, metastaskim adenokarcinomom distalnega holedohusa, HER-2 pozitivnim, pri katerem je prišlo do dobrega odgovora na sistemsko zdravljenje s kemoterapijo po shemi FOLFOX v kombinaciji s trastuzumabom.
Keywords: rak biliarnega trakta, sistemsko zdravljenje, rak prebavil
Published in DiRROS: 12.01.2023; Views: 408; Downloads: 98
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19. Mnenje za spremljanje bolnikov po preboleli covidni pljučniciMatjaž Turel, Natalija Edelbaher, Matjaž Fležar, Matevž Harlander, Peter Kecelj, Izidor Kern, Majda Kočar, Peter Kopač, Mitja Košnik, Robert Marčun, Igor Požek, Mirjana Rajer, Irena Šarc, Jurij Šorli, Dušanka Vidovič, Katarina Osolnik, 2021, original scientific article Abstract: Pljučnica je najpogostejši vzrok za težji potek okužbe z virusom SARS-CoV-2 in s hospitalizacijo. Potek covidne pljučnice je lahko različen; infiltrati, vidni na rentgenski sliki, se lahko resorbirajo spontano, včasih pa je potrebno zdravljenje s sistem-skimi glukokortikoidi. Ob odpustu iz bolnišnice zdravljenje običajno še ni končano, zato je Združenje pulmologov Slovenije v želji po enotnem obravnavanju bolnikov s covidno pljučnico izdelalo mnenje za obravnavo in sledenje bolnikov po od-pustu iz bolnišnice. Zavedamo se, da ob novi bolezni ne gre za dokončno priporočilo, saj bodo nova spoznanja o covidni pljučnici zanesljivo zahtevala obnavljanje priporočil.
Keywords: covid-19, mnenja, pljučnica, pulmologija, sistemski glukokortikoidi, covidna pljučnica
Published in DiRROS: 15.12.2021; Views: 1106; Downloads: 207
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20. Treatment outcome clustering patterns correspond to discrete asthma phenotypes in childrenIvana Banić, Mario Lovrić, Gerald Cuder, Roman Kern, Matija Rijavec, Peter Korošec, Mirjana Kljajić-Turkalj, 2021, original scientific article Abstract: Despite widely and regularly used therapy asthma in children is not fully controlled. Recognizing the complexity of asthma phenotypes and endotypes imposed the concept of precision medicine in asthma treatment. By applying machine learning algorithms assessed with respect to their accuracy in predicting treatment outcome, we have successfully identified 4 distinct clusters in a pediatric asthma cohort with specific treatment outcome patterns according to changes in lung function (FEV1 and MEF50), airway inflammation (FENO) and disease control likely affected by discrete phenotypes at initial disease presentation, differing in the type and level of inflammation, age of onset, comorbidities, certain genetic and other physiologic traits. The smallest and the largest of the 4 clusters- 1 (N = 58) and 3 (N = 138) had better treatment outcomes compared to clusters 2 and 4 and were characterized by more prominent atopic markers and a predominant allelic (A allele) effect for rs37973 in the GLCCI1 gene previously associated with positive treatment outcomes in asthmatics. These patients also had a relatively later onset of disease (6 + yrs). Clusters 2 (N = 87) and 4 (N = 64) had poorer treatment success, but varied in the type of inflammation (predominantly neutrophilic for cluster 4 and likely mixed-type for cluster 2), comorbidities (obesity for cluster 2), level of systemic inflammation (highest hsCRP for cluster 2) and platelet count (lowest for cluster 4). The results of this study emphasize the issues in asthma management due to the overgeneralized approach to the disease, not taking into account specific disease phenotypes.
Keywords: asthma, allergy and immunology, pediatrics, machine learning, treatment outcome, phenotypes, childhood asthma, clustering
Published in DiRROS: 16.08.2021; Views: 933; Downloads: 655
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