1. Infuence of age on force and re‑lengthening dynamics after tetanic stimulation withdrawal in the tibialis anterior muscleM. Cogliati, A. Cudicio, M. Benedini, H. V. Cabral, Francesco Negro, Carlo Reggiani, C. Orizio, 2023, izvirni znanstveni članek Ključne besede: aging, rate of torque reduction, relaxation process, stimulation
Objavljeno v DiRROS: 18.12.2023; Ogledov: 167; Prenosov: 82
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2. Photocatalytic CO2 reduction over mesoporous TiO2 photocatalystsMartin Reli, Peter Nadrah, Miroslava Filip Edelmannová, Rudolf Ricka, Andrijana Sever Škapin, Urška Lavrenčič Štangar, Kamila Kočí, 2024, izvirni znanstveni članek Povzetek: In this study, we investigated different synthesis methods (template-free and template-based) using copolymers of poly(ethylene oxide) and poly(propylene oxide) to enhance the CO2 reduction activity of mesoporous TiO2. Our main goal was to identify key factors affecting photocatalyst efficiency and selectivity. We compared the newly synthesized TiO2 photocatalysts with the commercial photocatalyst P25. Among the materials studied, TiO2-P123 in its pure anatase form demonstrated the highest photoreduction efficiency and CO2 selectivity. In contrast, TiO2-EG, TiO2-F127, and P25, which contained both rutile and anatase phases, exhibited decreased photoactivity due to the formation of a type II heterojunction between the phases and higher oxygen adsorption on rutile's surface. Additionally, we observed that the choice of chemicals for photocatalyst preparation significantly influenced the specific surface area. TiO2-P123, the most active photocatalyst, had the highest specific surface area, providing more reactive sites for improved light absorption efficiency and prolonged electron-hole pair lifetimes, resulting in enhanced photocatalytic activity. We also calculated apparent quantum yields to support our findings.
Ključne besede: CO2 reduction, TiO2, photocatalysis, mesoporous material, Sol-gel method
Objavljeno v DiRROS: 14.11.2023; Ogledov: 339; Prenosov: 33
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3. Pathophysiological mechanisms of reduced physical activity : insights from the human step reduction model and animal analoguesFabio Sarto, Roberto Bottinelli, Martino V. Franchi, Simone Porcelli, Boštjan Šimunič, Rado Pišot, Marco Vicenzo Narici, 2023, pregledni znanstveni članek Povzetek: Physical inactivity represents a heavy burden for modern societies and is spreading worldwide, it is a recognised pandemic and is the fourth cause of global mortality. Not surprisingly, there is an increasing interest in longitudinal studies on the impact of reduced physical activity on different physiological systems. This narrative review focuses on the pathophysiological mechanisms of step reduction (SR), an experimental paradigm that involves a sudden decrease in participants’ habitual daily steps to a lower level, mimicking the effects of a sedentary lifestyle. Analogous animal models of reduced physical activity, namely the “wheel-lock” and the “cage reduction” models, which can provide the foundation for human studies, are also discussed. The empirical evidence obtained thus far shows that even brief periods of reduced physical activity can lead to substantial alterations in skeletal muscle health and metabolic function. In particular, decrements in lean/muscle mass, muscle function, muscle protein synthesis, cardiorespiratory fitness, endothelial function and insulin sensitivity, together with an increased fat mass and inflammation, have been observed. Exercise interventions seem particularly effective for counteracting these pathophysiological alterations induced by periods of reduced physical activity. A direct comparison of SR with other human models of unloading, such as bed rest and lower limb suspension/immobilisation, is presented. In addition, we propose a conceptual framework aiming to unravel the mechanisms of muscle atrophy and insulin resistance in the specific context of reduced ambulatory activity. Finally, methodological considerations, knowledge gaps and future directions for both animal and human models are also discussed in the review.
Ključne besede: physical inactivity, cage reduction, insulin sensitivity, muscle atrophy
Objavljeno v DiRROS: 29.06.2023; Ogledov: 349; Prenosov: 259
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4. Optimal sensor set for decoding motor imagery from EEGArnau Dillen, Fakhreddine Ghaffari, Olivier Romain, Bram Vanderborght, Uroš Marušič, Sidney Grosprêtre, Ann Nowé, Romain Meeusen, Kevin De Pauw, 2023, izvirni znanstveni članek Povzetek: Brain–computer interfaces (BCIs) have the potential to enable individuals to interact with devices by detecting their intention from brain activity. A common approach to BCI is to decode movement intention from motor imagery (MI), the mental representation of an overt action. However, research-grade electroencephalogram (EEG) acquisition devices with a high number of sensors are typically necessary to achieve the spatial resolution required for reliable analysis. This entails high monetary and computational costs that make these approaches impractical for everyday use. This study investigates the trade-off between accuracy and complexity when decoding MI from fewer EEG sensors. Data were acquired from 15 healthy participants performing MI with a 64-channel research-grade EEG device. After performing a quality assessment by identifying visually evoked potentials, several decoding pipelines were trained on these data using different subsets of electrode locations. No significant differences (p = [0.18–0.91]) in the average decoding accuracy were found when using a reduced number of sensors. Therefore, decoding MI from a limited number of sensors is feasible. Hence, using commercial sensor devices for this purpose should be attainable, reducing both monetary and computational costs for BCI control.
Ključne besede: brain-computer interface, motor imagery, feature reduction, electroencephalogram, machine learning
Objavljeno v DiRROS: 03.04.2023; Ogledov: 456; Prenosov: 186
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5. The effect of rapid weight loss on the handgrip strength of national-level wrestlersCarlo Rossi, Roberto Roklicer, Antonino Bianco, Marko Manojlović, Barbara Gilić, Tatjana Trivic, Patrik Drid, 2021, izvirni znanstveni članek Povzetek: The effects of rapid weight loss (RWL) in combat sports athletes is an area that is not yet fully discovered. Therefore, the goal of this study was to determine the impact of weight loss on HGS (handgrip strength) in Greco-Roman wrestlers.This cross-over study included ten athletes examined for HGS during three time points for each hand. The first measurement – baseline (BL), was performed before we-ight reduction. The second measurement ‒ phase 1 (P1), was taken after high-intensity sports specific training (HISST) combined with RWL. In this phase, participants had to lose 5% of their body mass within three days, after which HISST was carried out (on day 3). The third measurement ‒ phase 2 (P2), was performed seven days after P1, which included HISST with no RWL.When comparing the HGS values, significantly higher values were observed only when P1 was compared with P2 for the left hand (p=0.039). This means that the grip was significantly stronger after RWL was conducted together with HISST.This research could be of great importance to combat sports coaches and athletes as it evaluates the effect of RWL on performance parameters. Therefore, the results of our study could serve to improve the wrestlers’ weight-reduction plan.
Ključne besede: wrestling, wrestlers, weight reduction, handgrip strength, performance
Objavljeno v DiRROS: 02.03.2023; Ogledov: 387; Prenosov: 178
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6. Comparison of selected dimensionality reduction methods for detection of root-knot nematode infestations in potato tubers using hyperspectral imagingJanez Lapajne, Matej Knapič, Uroš Žibrat, izvirni znanstveni članek Ključne besede: hyperspectral imaging, dimensionality reduction, LDA, PLS, PCA, RandomForest, ReliefF, XGB, Meloidogyne, Solanum tuberosum
Objavljeno v DiRROS: 06.09.2022; Ogledov: 480; Prenosov: 183
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8. Synthesis and advanced electrochemical characterization of multifunctional electrocatalytic composite for unitized regenerative fuel cellLeonard Moriau, Marjan Bele, Alen Vižintin, Francisco Ruiz-Zepeda, Urša Petek, Primož Jovanovič, Martin Šala, Miran Gaberšček, Nejc Hodnik, 2019, izvirni znanstveni članek Ključne besede: electrocatalysis, bifunctional electrocatalysts, oxygen evolution reaction, oxygen reduction reaction, IL-TEM, IL-SEM, EFC-ICP-MS
Objavljeno v DiRROS: 24.11.2020; Ogledov: 1435; Prenosov: 979
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9. Comparison of Pt-Cu/C with benchmark Pt-Co/C : metal dissolution and their surface interactionsMatija Gatalo, Primož Jovanovič, Urša Petek, Martin Šala, Vid Simon Šelih, Francisco Ruiz-Zepeda, Marjan Bele, Nejc Hodnik, Miran Gaberšček, 2019, izvirni znanstveni članek Ključne besede: oxygen reduction reaction, proton exchange membrane fuel cell, platinum alloy, metal dissolution, electrochemical flow cell coupled to inductively coupled plasma mass spectrometer
Objavljeno v DiRROS: 23.11.2020; Ogledov: 1431; Prenosov: 1075
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10. Yield reduction through cluster or selective berry thinning similarly modulates anthocyanins and proanthocyanidins composition in Refosco dal peduncolo rosso (Vitis vinifera L.) grapesPaolo Sivilotti, Rachele Falchi, Joshua Vanderweide, Paolo Sabbatini, Marijan Bubola, Andreja Vanzo, Klemen Lisjak, Enrico Peterlunger, Jose Carlos Herrera, 2020, izvirni znanstveni članek Ključne besede: Grapevine, Yield reduction, Selective thinning, Tannins, Anthocyanins, vinska trta, grozdje, pridelek, redukcija pridelka, redčenje, tanini, antociani, kemična sestava
Objavljeno v DiRROS: 06.05.2020; Ogledov: 1982; Prenosov: 247
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