11. |
12. Corrosion properties of aluminized 16Mo3 steelBlaž Karpe, Klara Prijatelj, Milan Bizjak, Tadeja Kosec, 2023, izvirni znanstveni članek Povzetek: Chromium-molybdenum steel (16Mo3) is widely used in petroleum, gas, automotive, and construction industries due to its good oxidation resistance and mechanical properties at moderately elevated temperatures. The aim of the research was to evaluate the corrosion susceptibility of 16Mo3 steel in hot rolled and aluminized states. Aluminization was performed by diffusion pack aluminization process at 900°C/2h and 730°C/4h, respectively. Electrochemical corrosion testing included measuring open circuit potential (EOCP), linear polarization resistance (LPR), potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS) in potassium phosphate buffer (KH2PO4, pH = 7). Optical microscopy (OM), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS) were used for surface layer microstructure characterization before and after corrosion tests. It was demonstrated that corrosion resistance of aluminized steel increased substantially. Corrosion properties were related to the structure and properties of intermetallic phase (FeAl, FeAl2 and Fe2Al5) that formed on the surface of 16Mo3 steel.
Ključne besede: aluminide coatings, aluminized steel, aluminizing, electrochemical corrosion investigation, 16Mo3 steel
Objavljeno v DiRROS: 16.11.2023; Ogledov: 312; Prenosov: 167
 Celotno besedilo (4,40 MB)
Gradivo ima več datotek! Več... |
13. Strižna trdnost spojev z ribjim klejem lepljenega lesa ovrednotena z metodo ABESMatic Sitar, Andreja Pondelak, Samo Grbec, Milan Šernek, 2023, izvirni znanstveni članek Povzetek: V prispevku smo s pomočjo sistema za avtomatizirano vrednotenje zlepljenosti (ABES) ugotavljali razvoj strižne trdnosti ribjega kleja pri lepljenju lesa. Uporabili smo bukov (Fagus sylvatica L.) furnir, ki smo ga lepili pri konstantnem tlaku 12 barov, medtem ko smo spreminjali temperaturo in čas stiskanja. Temperatura je znašala med25 °C in 100 °C, z intervalom 25 °C, čas stiskanja pa od 1 minute do 60 minut. Dosežena maksimalna strižna trdnost je znašala okoli 10 N/mm², dosegli smo jo pri vseh štirih proučevanih temperaturah stiskanja. Na podlagi rezultatov študije smo ugotovili, da strižna trdnost ribjega kleja pri različnih temperaturah segrevanja neenakomerno narašča. Pri višjih temperaturah segrevanja hitreje dosežemo maksimalne strižne trdnosti. Strižne trdnosti spoja lepila iz ribjega kleja smo ugotavljali tudi po standardih EN 204 in EN 205.
Ključne besede: wood
Objavljeno v DiRROS: 14.11.2023; Ogledov: 261; Prenosov: 147
Celotno besedilo (2,41 MB)
Gradivo ima več datotek! Več... |
14. |
15. Značaj kombinacije savremenih dijagnostičkih metoda u diferenciranoj dijagnostici tumora štitnjačeMarija Auersperg, Jožica Červek, Marjan Erjavec, Rastko Golouh, Marinka Kremžar, Janez Lamovec, Marija Us-Krašovec, Jurij Us, Franci-Stanko Marolt, Jasna Sever, Janez Novak, Miran Porenta, Marija Snežna Paulin-Košir, Ivana Levstik, Milan Valter Schara, Marjeta Šentjurc, 1977, izvirni znanstveni članek Objavljeno v DiRROS: 14.09.2023; Ogledov: 265; Prenosov: 81
Celotno besedilo (898,23 KB) |
16. |
17. Monitoring and control of forest seedling quality in EuropeMilan Mataruga, Branislav Cvjetković, Bart De Cuyper, Ina Aneva, Petr Zhelev, Pavel Cudlin, Marek Metslaid, Ville Kankaanhuhta, Catherine Collet, Peter Annighöfer, Gregor Božič, Hojka Kraigher, 2023, izvirni znanstveni članek Povzetek: The relationship between the quality of forest seedlings and their outplanting survival and growth has long been recognized. Various attributes have been proposed to measure the quality of planted seedlings in forest regeneration projects, ranging from simple morphological traits to more complex physiological and performance attributes, or a combination thereof. However, the utility and meaning of seedling quality attributes can differ significantly among regions, nursery practices, site planting conditions, species and the establishment purpose. Here, forest scientists compiled information using a common agreed questionnaire to provide a review of current practices, experiences, legislation and standards for seedling quality across 23 European countries.
Large differences exist in measuring seedling quality across countries. The control of the origin of seed and vegetative material (genetic component of plant quality), and control of pests and diseases are common practices in all countries. Morphological attributes are widely used and mandatory in most cases. However, physiological attributes are hardly used at the operative level and mainly concentrated to Fennoscandia. Quality control legislation and seedling quality standards are less strict in northern European countries where seedling production is high, and quality control relies more on the agreements between producers and local plant material users. In contrast, quality standards are stricter in Southern Europe, especially in the Mediterranean countries.
The control of seedling quality based on plantation and reforestation success is uncommon and depends on the conditions of the planting site, the traditional practices and the financial support provided by each country. Overall, European countries do not apply the “target seedling concept” for seedling production except for seed origin. Seedling production in many countries is still driven by traditional “know-how” and much less by scientific knowledge progress, which is not adequately disseminated and transferred to the end-users.
Our review highlights the need for greater harmonization of seedling quality practices across Europe and the increased dissemination of scientific knowledge to improve seedling quality in forest regeneration activities.
Ključne besede: forest nursery, forestation, legislation, morphological and physiological quality, standards, forest reproductive material, FRM
Objavljeno v DiRROS: 04.09.2023; Ogledov: 287; Prenosov: 157
 Povezava na datoteko
Gradivo ima več datotek! Več... |
18. |
19. |
20. Patološka klasifikacija karcinomov endometrijaMilan Car, 2023, objavljeni znanstveni prispevek na konferenci Povzetek: Karcinom endometrija je pred pričetkom zdravljenja potrebno potrditi s histološko preiskavo. Za postavitev diagnoze potrebujemo zadosten (reprezentativni) material, v katerem opredelimo histološki tip in ostale značilnosti tumorja. Svetovna zdravstvena organizacija v najnovejši (peti) izdaji knjige Ženski genitalni tumorji deli karcinome endometrija na različne histološke tipe in uvaja pomen molekularne klasifikacije. Standardiziran histološki izvid je ključen za določitev stadija bolezni, optimalno zdravljenje in napoved poteka bolezni. Omogoča tudi sistematično zbiranje podatkov za epidemiološke namene in raziskave.
Ključne besede: rak maternice, ginekološki raki, ginekološka onkologija
Objavljeno v DiRROS: 30.05.2023; Ogledov: 268; Prenosov: 156
Celotno besedilo (344,14 KB)
Gradivo ima več datotek! Več... |
