541. Crack size in coating and moisture problems comparing thermally modified and native spruce window frame profiles using hygrothermal simulationGregor Vidmar, Rožle Repič, Boštjan Lesar, Miha Humar, 2024, original scientific article Abstract: Fungal growth and degradation of wood may be caused by damage in the surface coating. The larger the cracks, the greater in principle the possibility of moisture-induced problems. Measuring basic unknown material parameters and employing hygrothermal simulations, the suitability and the maximum acceptable vertical crack size in the surface coating for a given bottom window profile made of thermally modified (TM) spruce(wood) with that made of native spruce were compared for location Ljubljana. Validation with the field test data was the second objective of the respective research. The average calculated maximum moisture content in TM spruce is about 4% (kg/kg) lower than that of native spruce. The 3 mm wide crack in the surface coating of a window frame made of native spruce is of the highest concern, whereas a 9 mm wide crack in the coating of a TM spruce profile is still acceptable. As far as moisture content is concerned in our study the TM spruce window frames were proved to be significantly more suitable for installation than the corresponding frames made of native Norway spruce. It was shown that isopleth, VTT and biohygrothermal models for mould growth do not properly capture the comparison between both materials, mainly because they classify both in the same material class/substrate category and they do not consider the material moisture content.
Keywords: hygrothermal simulations, mould growth modelling, cracks in surface coating, thermally modified wood, wooden window frame
Published in DiRROS: 16.10.2024; Views: 230; Downloads: 385
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542. The abdominal adiposity index (a body shape index) predicts 10-year all-cause mortality in elderly active non-obese subjectsAlessio Nunnari, Filippo Giorgio Di Girolamo, Kaja Teraž, Nicola Fiotti, Boštjan Šimunič, Filippo Mearelli, Rado Pišot, Gianni Biolo, 2024, original scientific article Abstract: Background/Objectives: A Body Shape Index (ABSI), which accounts for waist circumference relative to mass and height, shows a robust association with mortality risk. The present study evaluates the effectiveness of ABSI as a predictor of 10-year all-cause mortality in physically active, non-obese elderly individuals. Methods: This prospective cohort study included 159 volunteers (94 women, aged 60–80 years), recruited in the frame of the “Physical Activity and Nutrition for Great Ageing” (PANGeA) Cross-border Cooperation Program Slovenia–Italy 2007–2013, and followed for 10 years. Baseline characteristics included anthropometric measurements, bioelectrical impedance analysis, and cardiovascular fitness tests (VO2max). Statistical analyses (Cox regression, Kaplan–Meier survival) were conducted to examine the relationship between ABSI and mortality. Results: During the 10-year follow-up, 10 deaths (6.7%) were recorded. ABSI (adjusted for age, smoking, comorbidities, and therapy) was an independent predictor of mortality (hazard ratio = 4.65, p < 0.001). Higher ABSI scores were linked to reduced VO2max (r = −0.190, p = 0.017) and increased systolic blood pressure (r = 0.262, p = 0.001). An ABSI-based predictive model showed strong discriminatory power (AUROC = 0.91). Conclusions: ABSI is a reliable predictor of 10-year mortality in active, non-obese elderly individuals and may improve risk stratification in clinical practice.
Keywords: ABSI, a body shape index, body shape, fre fat mass, sarcopenia, prognostic index, elderly, mortality
Published in DiRROS: 16.10.2024; Views: 200; Downloads: 318
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543. Influence of the oxidizing technique on the biocompatible and corrosion properties of Ti6Al4V in a physiological environmentMirjam Bajt Leban, Tadeja Kosec, Aleksandra Kocijan, Marjetka Conradi, Ita Junkar, Janez Kovač, 2025, original scientific article Abstract: This work aims to evaluate the corrosion and biocompatibility properties of oxide films generated on Ti6Al4V alloys using both traditional and novel methods. Oxide films were generated by anodization and plasma treatment to achieve a blue surface finish. The oxide films were then characterized and compared to a native film formed on the Ti6Al4V.
Electrochemical tests, incorporating potentiodynamic tests and electrochemical impedance spectroscopy, were employed to define the electrochemical resistance of oxides in an environment simulating biological exposure. In vitro tests were conducted to study ion release and biocompatible properties over a 6-week period of exposure to a 0.9 wt% NaCl solution, at body temperature. Various spectroscopic techniques, including ToF-SIMS, XRD, and Raman analysis, were used to study the structure and chemistry of the oxide films. The sub-surface layer was analysed by microstructural investigation.
The type of oxidation was found to have a key influence on the oxide composition, especially with respect to the depth distribution of the individual alloy elements through the oxide film. The oxidation process determines which of the alloying elements are released into the environment, as a result of the corrosion reactions.
Keywords: oxide film, biocompatibility, surface characterization, ion release, simulated body fluid
Published in DiRROS: 16.10.2024; Views: 245; Downloads: 223
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544. Multicriteria analysis as a method for engaging stakeholders and citizens in activities aimed at supporting climate resilience and adaptation to climate change – Gdansk Coastal City Living Lab case studyJacek Barańczuk, Grzegorz Masik, Katarzyna Barańczuk, Cécil J. W. Meulenberg, 2024, original scientific article Abstract: In this study, we aimed to present solutions to mitigate the effects of climate change, summer torrential rain, and pluvial flooding. Within the Gdańsk living lab, a multicriteria analysis (MCA) was performed to assess the implementation of ecosystem-based adaptation (EBA) options for the city of Gdańsk. The results show an assessment of the stakeholders’ acceptability and local knowledge of selected EBA options including rainwater gardens, water parks, retention ponds, green roofs, green walls, community gardens, urban farming and tree plantation. All the proposed EBAs were generally accepted during an online living lab stakeholder meeting. However, EBA solutions that were less intrusive on the natural landscape were preferred over large structures. Yet during the consecutive physical workshop with identified stakeholder composition, there was a higher level of approval for large structures to reduce the level of flood risk, indicating that face-to-face meetings significantly influence the choice of measures during MCA procedures. This has highlighted the importance of physical meetings of MCA for selecting proper implementation options.
Keywords: climate change, resilience, multicriteria analysis, ecosystem-based adaptation
Published in DiRROS: 15.10.2024; Views: 188; Downloads: 103
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545. Suicide in the Austrian Littoral at the turn of the 20th centuryUrška Bratož, 2024, original scientific article Abstract: The paper seeks to examine the social image of suicide at the end of the 19th and the beginning of the 20th century, focusing on the case of Trieste as a major Austrian urban centre, where the suicide rates were visibly increasing from at least the 1870s onwards. The perception of the growing presence of suicide in society made it possible to observe the reflec-tions on suicide from the last quarter of the 19th century, originating from different parts of Europe (Morselli, Masaryk, Durkheim), and at the same time how the discourses around suicide shed light on a somewhat broader picture of society, including its fears (of social problems and change, not least the potential threat of the imitative effect that the daily press was believed to create by reporting on suicides).The newspaper discourse usually followed the scientific publications of the time, and the contemporaneous observations on the mass of suicides were confirmed through statistical analyses and medical, sociological, philosophical, and other debates, while raising many other social issues with which suicide in urban areas could be linked (alcoholism, the growth of the proletariat, poverty, changing values, etc.). All these factors shaped the public debate on suicide as a problem of modern society, with an emphasis on (big) cities, where the prob-lem of suicide was much more pronounced than in smaller, non-industrial towns, or in the countryside of the Austrian Littoral.
Keywords: suicide, cities, modernisation, 1870-1910, Trieste, Koper, Austria-Hungary
Published in DiRROS: 15.10.2024; Views: 162; Downloads: 95
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546. Fotokatalitski heterostrukturirani nanomateriali za izkoriščanje sončne energije : zaključno poročilo o rezultatih raziskovalnega projektaAndrijana Sever Škapin, Peter Nadrah, Miran Gaberšček, 2024, final research report Keywords: fotokataliza, heterostrukture, TiO2-CeO2, TiO2-Cu, sokatalizator, photocatalysis, heterostructures, co-catalyst
Published in DiRROS: 14.10.2024; Views: 301; Downloads: 0
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547. Thinking Togetherness : Phenomenology and Sociality2023, scientific monograph Abstract: The scientific monograph THINKING TOGETHERNESS. PHENOMENOLOGY AND SOCIALITY, edited by Dr. Andrej Božič, comprises the contributions of 32 scholars from the field of phenomenological philosophy. The international and intergenerational configuration of the whole, within which the chapters are meaningfully arranged into seven thematic sections, imparts upon the volume the character of a panoramic scrutiny of the phenomenological manner of confronting the question what co-constitutes the fundamental traits of inter-personal co-habitation with others. The volume offers not only a historical account with regard to the development of phenomenology, but also quite straightforwardly concerns its relevance within the philosophical research that deals with the contemporary problems of society.
Keywords: Society, Sociality, Social Phenomenology, Phenomenological Sociology
Published in DiRROS: 11.10.2024; Views: 306; Downloads: 159
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549. Etika uživanja hrane : Hrana in mi: vprašanje nekega odnosaAdriano Fabris, 2023, professional monograph Abstract: Adriano Fabris nas v knjigo uvede s kritiko današnjih predstav o prehranjevanju in odnosu do jedi. Etika uživanja hrane ni povezana niti s temi, ki prepotujejo kilometre, da pridejo do lokala s slow food, niti s temi, ki so zadovoljni z goltanjem sendvičev iz restavracij s fast food. Prav tako ne zadeva obnašanja teh, ki prepovedujejo določeno hrano ali fetišizirajo določene vire hrane, kot so borci za pravice živali, vegetarijanci in vegani. Zadeva tiste, ki se zavedajo, da jesti pomeni odnos do vsega, kar nas lahko nahrani: spoštljiv, uravnotežen odnos, ki upošteva mnogotere vezi, v katere je vpleteno vsako živo bitje. To je delovanje tistih, ki razumejo, da je treba regulirati svojo željo in ne potrebe po prehranjevanju. V drugem poglavju avtor obravnava različne načine reguliranja prehranjevanja s predpisovanjem tega, kaj na bo dovoljeno jesti in kaj ne. V ozadju teh predpisov, zapovedi in prepovedi se kot specifični znak naše omejenosti pojavlja nezmožnost, da bi asimilirali vse, torej povsem zaužili tisto, s čimer se prehranjujemo, s čimer je povezana tudi potreba po puščanju ostankov in odpadkov. V tretjem poglavju je začrtana etiko uživanja hrane, ki izhaja iz predpostavke, da obstoj hrane implicira, spodbuja in izvršuje odnose ter da je prehranjevanje samo odnos. Na to se navezuje vprašanje, ali je za prehranjevanje samega sebe neizogibno izvajati nasilje nad drugimi organizmi. Etični vidik se oblikuje ob predpostavki odgovornega odnosa do živih bitij, ki ne vključuje le nas ljudi, marveč celoten ekosistem. Knjigo zaključuje manjši priročnik (dekalog), ki naj bi z normativnim pristopom usmerjal naše konkretne izbire v pri prehranjevanju. Od naše izbire je odvisno, ali bomo z etično motivirano izbiro dejansko spremenili naš odnos do prehranjevanja. Če bomo to storili, bo to prvi korak k uveljavitvi še bolj splošnih sprememb v našem odnosu do sveta in k odgovorni delitvi skupnega prostora z drugimi živimi bitji.
Keywords: prehrana, prehrambna kultura, etika, religija
Published in DiRROS: 11.10.2024; Views: 262; Downloads: 65
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550. Computation of leaky waves in layered structures coupled to unbounded media by exploiting multiparameter eigenvalue problemsHauke Gravenkamp, Bor Plestenjak, Daniel A. Kiefer, Elias Jarlebring, 2025, original scientific article Abstract: We present a semi-analytical approach to compute quasi-guided elastic wave modes in horizontally layered structures radiating into unbounded fluid or solid media. This problem is of relevance, e.g., for the simulation of guided ultrasound in embedded plate structures or seismic waves in soil layers over an elastic half-space. We employ a semi-analytical formulation to describe the layers, thus discretizing the thickness direction by means of finite elements. For a free layer, this technique leads to a well-known quadratic eigenvalue problem for the mode shapes and corresponding horizontal wavenumbers. Incorporating the coupling conditions to account for the adjacent half-spaces gives rise to additional terms that are nonlinear in the wavenumber. We show that the resulting nonlinear eigenvalue problem can be cast in the form of a multiparameter eigenvalue problem whose solutions represent the wave numbers in the plate and in the half-spaces. The multiparameter eigenvalue problem is solved numerically using recently developed algorithms. Matlab implementations of the proposed methods are publicly available.
Keywords: guided waves, plates, soil dynamics, half-space, leaky waves, semi-analytical method
Published in DiRROS: 11.10.2024; Views: 198; Downloads: 2392
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