1. A perspective on the potential of using marine organic fertilizers for the sustainable management of coastal ecosystem servicesIraj Emadodin, Thorsten Reinsch, Ana Rotter, Martina Orlando-Bonaca, Friedhelm Taube, Jamileh Javidpour, 2020 Opis: Agricultural production is predicted to double during the next century. To ensure food security in response to global population growth is a challenge and will require strategies that mitigate associated environmental damage in ways consistent with United Nation’s Sustainable Development Goals. One possible approach is to utilize organic fertilizers from marine sources to improve soil structure by enhancing activities of soil organisms and restoring essential plant nutrients to the soil. Here we identify opportunities to develop organic fertilizers from two types of materials of marine origin: seagrass wrack and jellyfish biomass. Seagrass wrack often occurs as undesirable waste material on beaches. In many coastal areas around the world jellyfish bloom presents a nuisance because of negative impacts on marine ecosystem productivity. Several investigations have reported that organic fertilizers produced from seagrass and jellyfish could enhance coastal ecosystem services by reducing pollution, and by improving soil health and quality. Recent research indicates that seagrass litter improves soil water holding capacity and the nutritional value of crops; moreover, it can be used as multi-functional fertilizer, due to its content of valuable macro- and microelements. The application of jellyfish fertilizer increases soil contents of organic matter, nitrogen, phosphorus and potassium and enhances the growth and survival of seedlings significantly. In this overview we describe novel approaches regarding the utilization of seagrass and jellyfish as sources of fertilizer, and experimental studies on the influences of marine organic fertilizers on soil restoration, and implications for coastal management.
Ključne besede: seagrass, jellyfish, soil ecosystem, sustainable agriculture, soil fertility, blue economy
Objavljeno: 06.08.2024; Ogledov: 1256; Prenosov: 8020
 Celotno besedilo (982,45 KB)
Prenosov v tednu: 5120 |
2. Myocardial strain imagingOtto A. Smiseth, Oliver Rider, Marta Cvijić, Ladislav Valkovič, Espen W. Remme, Jens-Uwe Voigt, 2025 Opis: Myocardial strain imaging by echocardiography or cardiac magnetic resonance (CMR) is a powerful method to diagnose cardiac disease. Strain imaging provides measures of myocardial shortening, thickening, and lengthening and can be applied to any cardiac chamber. Left ventricular (LV) global longitudinal strain by speckle-tracking echocardiography is the most widely used clinical strain parameter. Several CMR-based modalities are available and are ready to be implemented clinically. Clinical applications of strain include global longitudinal strain as a more sensitive method than ejection fraction for diagnosing mild systolic dysfunction. This applies to patients suspected of having heart failure with normal LV ejection fraction, to early systolic dysfunction in valvular disease, and when monitoring myocardial function during cancer chemotherapy. Segmental LV strain maps provide diagnostic clues in specific cardiomyopathies, when evaluating LV dyssynchrony and ischemic dysfunction. Strain imaging is a promising modality to quantify right ventricular function. Left atrial strain may be used to evaluate LV diastolic function and filling pressure.
Ključne besede: cardiac magnetic resonance, cardiomyopathy, myocardial function, myocardial work, speckle-tracking echocardiography, strain
Objavljeno: 08.01.2026; Ogledov: 703; Prenosov: 565
Celotno besedilo (10,00 MB)
Prenosov v tednu: 156 |
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4. Smiselna dezorientacija in nihilistični precep2026 Opis: Razprave pod naslovom Smiselna dezorientacija in nihilistični
precep naslavljajo družbeno-kritična, filozofska, zgodovinska, religiozna, umetniška in literarna vprašanja, ki so programsko začrtane
v Konceptualnem zarisu Deana Komela, podanem v okviru izvedbe
raziskovalnega projekta »Hermenevtični problem razumevanja
človeške eksistence in koeksistence v epohi nihilizma« (2022–2025).
Monografija združuje dvajset recenziranih prispevkov, ki ponujajo
raznolike poglede in izražajo izključno stališča avtorjev in avtoric, v
katera se uredniško ni naknadno posegalo ali se jih usklajalo. Ob tej
priliki bi se vsem avtorjem in avtoricam tudi zahvalila za sodelovanje.
Razprave reflektirajo situacijo sodobnosti, ki jo zaznamuje kriza
orientacijskih dejavnikov kot so vrednote, norme in tradicija ter
ontološki, etični, socialni in drugi referenčni toposi na področjih
filozofije, umetnosti, zgodovine, tehnoznanosti, ekonomije, prava,
religije, politike, religije in medijev, ki predpostavljajo ter hkrati
postavljajo smiselnost kot merilo človeškega delovanja. Kakor je podano
tudi v konceptualnem zarisu, smiselna dezorientacija ne označuje
zgolj mešanja ali konflikta različnih orientacij, temveč bivanjsko
situacijo v katerem orientacija sama izgublja svojo normativno in
razmejevalno moč. Nihilistični precep tako ne zadeva le umanjkanja
in pogrešanja vrednostnih izpolnitev, marveč hkrati tudi izgubo njihove
orientacijske relevantnosti. Nihilistični precep zato ni razkol, temveč razpona, v kateri se javlja potreba po smislu na eni ter razpoložljivi
načini za njegovo uresničevanje na drugi strani.
V tej razponi filozofske razprave obravnavajo, kako je človekova eksistenca in koeksistenca izpostavljena nenehno spreminjajočim se družbenim pričakovanjem, kjer se izguba smisla ne javlja le v metafizični presežnosti, temveč zlasti kot orientacijska zmožnost, brez katere razločevanje in presoja vrednot sploh nista več mogoči. Zgodovinski in družbeni prispevki izpostavljajo dezorientacijo v aktualnem času, ki se v slovenski, pa tudi v širši svetovni
perspektivi danes kaže kot nezmožnost oblikovanja skupnih orientacij s pogledom v preteklost in na prihodnost. Prispevki s področja teologije tematizirajo transcendenco smisla, ob čemer izstopi tudi razpetost religioznega izročila med institucionalnim in eksistencialnim vidikom njegovega sprejemanja in dojemanja. Razprave o umetnosti in literaturi odstirajo, kako je sodobna kultura podvržena ambivalentnosti kriterijev, spričo česar tudi umetniška svoboda in estetsko vrednotenje sami po sebi ne že zagotavljata, kaj šele izgotavljata smisel ustvarjalnosti. Paralelno s tem se odpirajo tudi vprašanja učinkovanja
smisla v tehnološko vodeni produkciji ter potrošnji, zlasti kar zadeva umetno inteligenco, informacijsko komunikacijo in generativno manipulacijo, ki se danes promovirajo kot obljuba učinkovite orientacije, pri čemer se pogosto spregleda za koga oziroma proti komu je u(s)merjena.
Tematsko polje smiselne dezorientacije in nihilističnega precepa je v knjigi reflektirano predvsem kot hermenevtični problem razumevanja sodobne človeške eksistence in koeksistence, na podlagi česar se izrišejo njegove širše družbene implikacije, tudi kar zadeva sodobno slovensko ter evropsko situacijo. Namen monografije ni v tem, da razlaga ali celo nalaga smisel ter tisto, kar naj ima smisel, temveč predvsem, da vzbudi premislek orientacijske relevance vprašanja
o smislu prebivanja v svetu ter načinu, kako ga lahko skupaj v dobrem urejamo.
Ključne besede: smisel, kriza, eksistenca, hermenevtika, filozofija, zgodovina, verstva, umetnost, literatura
Objavljeno: 10.03.2026; Ogledov: 146; Prenosov: 109
Celotno besedilo (34,35 MB)
Prenosov v tednu: 65 |
5. Long-term outcome after combined or sequential liver and kidney transplantation in children with infantile and juvenile primary hyperoxaluria type 1Sebastian Loos, Markus J. Kemper, Kaja Schmaeschke, Uta Herden, Lutz Fischer, Bernd Hoppe, Tanja Kersnik-Levart, Enke Grabhorn, Raphael Schild, Jun Oh, 2023 Opis: Introduction: Combined or sequential liver and kidney transplantation (CLKT/SLKT) restores kidney function and corrects the underlying metabolic defect in children with end-stage kidney disease in primary hyperoxaluria type 1 (PH1). However, data on long-term outcome, especially in children with infantile PH1, are rare. Methods: All pediatric PH1-patients who underwent CLKT/SLKT at our center were analyzed retrospectively. Results: Eighteen patients (infantile PH1 n=10, juvenile PH1 n = 8) underwent transplantation (CLKT n=17, SLKT n = 1) at a median age of 5.4 years (1.5–11.8). Patient survival was 94% after a median follow-up of 9.2 years (6.4–11.0). Liver and kidney survival-rates after 1, 10, and 15 years were 90%, 85%, 85%, and 90%, 75%, 75%, respectively. Age at transplantation was significantly lower in infantile than juvenile PH1 (1.6 years (1.4–2.4) vs. 12.8 years (8.4–14.1), P = 0.003). Median follow-up was 11.0 years (6.8–11.6) in patients with infantile PH1 vs. 6.9 years (5.7–9.9) in juvenile PH1 (P = 0.15). At latest follow-up kidney and/or liver graft loss and/or death showed a tendency to a higher rate in patientswith infantile vs. juvenile PH1 (3/10 vs. 1/8, P=0.59). Discussion: In conclusion, the overall patient survival and long-term transplant outcome of patients after CLKT/SLKT for PH1 is encouraging. However, results in infantile PH1 tended to be less optimal than in patients with juvenile PH1.
Ključne besede: hyperoxaluria, infantile, juvenile, transplantation, outcome
Objavljeno: 10.03.2026; Ogledov: 130; Prenosov: 104
Celotno besedilo (771,02 KB)
Prenosov v tednu: 56 |
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8. Corrosion characterization and ion release in SLM-manufactured and wrought Ti6Al4V alloy in an oral environmentMirjam Bajt Leban, Tadeja Kosec, Matjaž Finšgar, 2022 Opis: As-produced and heat-treated TiAlV samples were prepared by selective laser melting and compared to wrought samples of identical chemical composition. Microstructural, corrosion, and spectroscopic studies of additively manufactured samples in artificial saliva at 37 °C, with NaF and at pH 2.3 were as a novelty combined with metal ion release during 42 days immersion. In artificial saliva higher amount of ions was released on SLM specimen when compared to wrought alloy. The total amount of ions released from SLM specimen in AS containing NaF was 10-times higher than in AS, while in AS with lactic acid it was 100-times higher.
Ključne besede: Ti6Al4V, SLM, corrosion, ion release, XPS, ToF-SIMS
Objavljeno: 31.05.2023; Ogledov: 1420; Prenosov: 1472
Celotno besedilo (15,86 MB)
Prenosov v tednu: 47 |
9. Exploring the microstructure, mechanical properties, and corrosion resistance of innovative bioabsorbable Zn-Mg-(Si) alloys fabricated via powder metallurgy techniquesDavid Nečas, Vojtěch Hybášek, Jan Pinc, Andrea Školáková, Ilona Voňavková, Klára Hosová, Martin Zlámal, Anna Boukalová, Jan Pokorný, Drahomír Dvorský, Črtomir Donik, Dalibor Vojtěch, Jiří Kubásek, 2024 Opis: Zinc alloys belong to the widely studied materials for applications like medical devices, however, they often
encounter an inappropriate combination of mechanical/corrosion/biological properties. In this respect, we
produced the Zn–1Mg and Zn–1Mg–1Si containing biologically friendly elements with potential strengthening
effects on zinc matrix by powder metallurgy methods including mechanical alloying, spark plasma sintering, and
extrusion further enabling the formation of materials with unique extremely fine-grained microstructures. The
systematic study of these materials showed the possibility of reaching homogeneous nano-grain microstructure
and high strength values exceeding 450 MPa in tension. Selected chemical composition and processing methods
led also to slightly decreased wear and corrosion rates and rather uniform corrosion.
Ključne besede: zinc, mechanical alloying, biodegradable metals, composite, spark plasma sintering, extrusion, powder metallurgy
Objavljeno: 23.07.2024; Ogledov: 1238; Prenosov: 975
Celotno besedilo (21,50 MB)
Prenosov v tednu: 45 |
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