1831. Elucidating nucleation stages of transgranular stress corrosion cracking in austenitic stainless steel by in situ electrochemical and optical methodsSarmiento Klapper Helmuth, Bojan Zajec, Andreas Heyn, Andraž Legat, 2019, original scientific article Abstract: The pitting and environmentally assisted cracking resistance of austenitic stainless steels (SS) is challenged in several industrial applications particularly those involving hot chloride-concentrated streams. Directional drilling used in the oil and gas exploration is one of these applications. Indeed, high strength CrMn-SS commonly used in drilling technology have a high tendency to fail by stress corrosion cracking (SCC) preceded by localized corrosion once subjected to highly chloride-concentrated drilling fluids at elevated temperatures. A comprehensive understanding regarding the mechanisms governing the transition from pitting into SCCis not currently available, though. Therefore, mechanistic aspects such as the effect of loading conditions on pit nucleation and repassivation as well as the synergistic effect between pit stabilization and the nucleation of a stress corrosion crack are of great practical significance. To investigate this an electrochemical-, optical- and mechanical- monitored SCC test was conducted on a CrMn-SS in an alkaline brine at elevated temperature. The transition from metastable to stable pitting and subsequently to SCC in this system was documented in-situ for the first time. Results supported H.S. Isaacs postulates regarding the interpretation of electrochemical signals and demonstrated that loading conditions affect pit nucleation and repassivation leading to a higher susceptibility of the material to pitting, which preceded SCC.
Keywords: pitting corrosion, stress corrosion cracking, monitoring, elektrochemical noise, austenitic stainless steel
Published in DiRROS: 23.11.2023; Views: 339; Downloads: 254
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1832. Rak jajčnikov : ponovno nekaj novega2023, proceedings of peer-reviewed scientific conference contributions (domestic conferences) Abstract: Rak jajčnikov je najpogostejši vzrok smrti pri ženskah, ki zbolijo za ginekološkimi raki, saj je bolezen za večino bolnic v napredovalih fazah pogosto usodna. To je posledica težavne prepoznavnosti bolezni v zgodnjih fazah, ko je zdravljenje učinkovito. /// Na žalost preventivni program za zgodnje odkrivanje raka jajčnikov še ne obstaja, zato je pri več kot 75 % bolnic bolezen odkrita v napredovalih stadijih, kar posledično prinaša slabo prognozo. Tako pri zdravnikih kot pri ženskah je pomanjkljivo poznavanje zgodnjih znakov bolezni, kar lahko vodi v napačno diagnostiko in triažiranje bolnic v neprimerno zdravstveno ustanovo. /// Diagnoza se postavi s pomočjo ustreznih diagnostičnih preiskav, potrdi pa se s patohistološko preiskavo. 90 % rakov jajčnikov izvira iz epitelija, medtem ko so drugi tipi redki. Osnovno zdravljenje vključuje kirurški poseg, katerega cilj je popolnoma odstraniti bolezen in doseči stanje brez vidnega ostanka bolezni. Sledi sistemska terapija, medtem ko obsevanje pri zdravljenju raka jajčnikov nima ključnega pomena. /// Ugotovljeno je, da je zdravljenje raka jajčnikov najuspešnejše v specializiranih ustanovah, kjer delujejo strokovnjaki z usmerjenostjo v ginekološko-onkološko področje. V Sloveniji si nenehno prizadevamo za standardizirano in kakovostno obravnavo žensk z rakom jajčnikov.
Keywords: ginekološki raki, elektronske knjige
Published in DiRROS: 22.11.2023; Views: 480; Downloads: 202
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1833. Napotki za premagovanje neželenih učinkov sistemskega zdravljenja raka : kaj morate vedeti?Simona Borštnar, Boštjan Šeruga, Marjana Bernot, Marika Horvat, Barbara Jezeršek Novaković, Denis Mlakar-Mastnak, Janja Ocvirk, Samo Rožman, Monika Sonc, Snežana Umičević, Metka Zajc, Branko Zakotnik, 2023, dictionary, encyclopaedia, lexicon, manual, atlas, map Keywords: onkologija, bolniki, nasveti
Published in DiRROS: 22.11.2023; Views: 459; Downloads: 163
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1834. O akupunkturi : informacije za bolnikeIztok Potočnik, Branka Stražišar, Tanja Bohinc, Ajša Repar, Teodora Zupanc, Milena Kerin-Povšič, 2023, dictionary, encyclopaedia, lexicon, manual, atlas, map Keywords: akupunktura, medicina, kitajska medicina, bolniki
Published in DiRROS: 22.11.2023; Views: 549; Downloads: 209
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1835. Obsevanje ginekoloških tumorjevBarbara Šegedin, Helena Barbara Zobec Logar, Manja Šešek, Ana Perpar, Blaž Grošelj, Miha Oražem, 2023, professional monograph Keywords: teleterapija, brahiterapija, prehrana, kemoterapija, stranski učinki
Published in DiRROS: 22.11.2023; Views: 499; Downloads: 135
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