Yazarlar
- Özen, Soner(19)
- Pat, Suat(18)
- Korkmaz, Şadan(17)
- Şenay, Volkan(17)
- Kaya, Yunus(16)
- Dertli, Enes(15)
- Hasar, Ugur Cem(11)
- Cuce, Erdem(10)
- Cuce, Pinar Mert(9)
- Ertugrul, Mehmet(9)
- Isik, Cem(9)
- Ongan, Serdar(9)
- Ramahi, Omar M.(9)
- Imamoglu, Ilyas Kays(8)
- Bayram, Ozkan(7)
- Ozturk, Hamdullah(7)
- Abdioglu, M.(6)
- Aydin, Rahman(6)
- Ceylan, Halil Ibrahim(6)
- Demirtas, M.(6)
- Ecem Bayram, Nesrin(6)
- Igman, Erdal(6)
- Kutlu, Naciye(6)
- Ozturk, Gokhan(6)
- Purcek, G.(6)
- Simsek, Onder(6)
- Aksakal, Vecihi(5)
- Bayraktar, Bülent(5)
- Cakir, Ozlem(5)
- Can, Zehra(5)
- Ceylan, Nagihan Burcak(5)
- Hasar, Ugur C.(5)
- Kamiloğlu, Aybike(5)
- Korkmaz, Huseyin(5)
- Ozturk, K.(5)
- Tekce, Emre(5)
- Yanar, H.(5)
- Yilmaz, Mustafa Tahsin(5)
- İspirli, Hümeyra(5)
- Artar, Musa(4)
Yayınlar
- MakaleYayıncıda açık erişim2026Exploring the role of rare earth elements doped TiO₂ based photoanodes on the performance of dye-sensitized solar cells
Caliskan, Berrak; Sayan, Enes; Igman, Erdal
This study investigates the synthesis and characterization of rare earth elements (REEs) doped TiO₂ thin films based photoanodes for use in dye-sensitized solar cells (DSSCs). For this purpose, TiO₂ films were doped with Ho³⁺, La³⁺, Er³⁺, and Yb³⁺ ions to enhance photoelectrochemical properties. Characterization techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-Vis spectroscopy, BET surface area analysis, and X-ray photoelectron spectroscopy (XPS) were employed for the structural, morphological, and optical characterization of the synthesized photoanodes and CEs. REEs doping improved the surface morphology and optical properties of TiO₂, in particular, it increased photon absorption in the visible light range. La³⁺ and Ho³⁺ significantly improved photovoltaic performance, achieving power conversion efficiencies of 3.78% and 2.87%, respectively, compared to that of pure TiO₂. These enhancements indicate improved charge transport and light harvesting due to incorporation of REEs. Additionally, replacing the conventional platinum counter electrode (CE) with reduced graphene oxide (rGO) further enhanced performance, offering a low-cost and efficient alternative. The study highlights the combined benefits of REEs doping and rGO integration in improving DSSCs efficiency. These findings contribute to the development of more sustainable, cost-effective solar energy technologies and underline the potential of REEs-doped TiO₂ films and rGO electrodes in advancing next-generation photovoltaic devices.
AtıfScopus3WoS3
İncele - MakaleYalnız künye2026Comparative investigation of composite-metal lap joints with mono-adhesive and thermoplastic-reinforced mixed adhesive at elevated temperatures
Erbayrak, Engin; Eker, Beril; Colak, Murat
This study primarily examines the strength of a single lap joint having a mixed adhesive overlap consisting of a single adhesive and its thermoplastic reinforced state under varying temperatures. In the single lap joint, Titanium-Boron reinforced A356 aluminum was employed as the metal adherend, while plain woven glass fiber-reinforced epoxy (GFRE) was employed as the composite adherend. In the application of the mixed adhesive overlap, the brittle adhesives were employed in the middle section of the lap joint, while the reinforcement of the thermoplastics was employed on the adhesives at both sides of the lap joint. The single lap joints were subjected to tensile tests at 1 mm/min loading rates under room temperature and 120 °C, which is the melting point of the copolyester. In the numerical analysis, the cohesive zone model was applied in order to define the adhesives; however, elastic isotropic and orthotropic material behaviors were employed for the metal and composite adherends, respectively. Eventually, it is determined that the strength of a mixed adhesive lap joint consisting of a single adhesive and its thermoplastic reinforced state is better than a lap joint made with the mono-adhesive alone. Although literature suggests that mixed adhesive overlaps can be formed using at least two different adhesives (one ductile and one brittle), this study demonstrated that a mixed adhesive zone can be created using a single adhesive and thermoplastic reinforcement.
- MakaleYalnız künye2026Policy factors affecting international sporting success in Turkey from the perspective of the SPLISS model
Ersöz, G.; Kan, M.E.; Yenilmez, M. Ince; Kantar, G.
In recent years, research on elite sport policies has mainly focused on systems in Europe, North America and Australia. This study represents the first qualitative analysis of Turkey within the framework of the SPLISS model, aiming to fill the regional gap in the literature and offer original contributions regarding the model’s cultural and structural adaptability. In this context, the study aims to analyse the policy factors affecting international sporting success in Turkey. A total of 15 individuals–five athletes, five coaches and five sports managers–aged between 21 and 51 and actively involved in sport, participated in the study. A semi-structured interview technique was used, with questions prepared from the SPLISS model perspective, and the data were analysed using content analysis. The findings reveal that financial support for sport in Turkey is inadequate, there is no merit-based system in sports governance, the limited hours and content of physical education classes in schools reduce participation in sport, career support for athletes is insufficient, talent identification projects are dysfunctional, coach education has significant shortcomings and there is a lack of collaboration between sport science researchers and practitioners. The study indicates that Turkey’s sports policies require comprehensive restructuring through reforms in several areas, including equitable financial support, merit-based governance, enhanced collaboration and coordination among sport institutions, long-term strategic planning, strengthening school-based sport, sustainable career support for athletes and fostering stronger cooperation between researchers and practitioners in sport sciences.
- MakaleYalnız künye2026Development and characterization of postbiotic-enriched biodegradable films with antifungal activity for tomato storage
Kaya, Yasemin; İspirli, Hümeyra; Bozkurt, Fatih; Sağdıç, Osman; Şengül, Mustafa; Dertli, Enes
BACKGROUND: One of the major contributors to postharvest losses in tomatoes is the development of infectious mold diseases. In this study, four distinct biodegradable film formulations were developed incorporating postbiotics derived from Lactiplantibacillus plantarum Y48 and the polysaccharide alternan. The formulations included alternan, sodium alginate and glycerol (AAG), alternan, postbiotic, sodium alginate and glycerol (APAG), postbiotic, sodium alginate and glycerol (PAG), and sodium alginate and glycerol (AG) as a control. The films were characterized in terms of their physical, mechanical, thermal, and morphological properties. To assess antifungal efficacy, tomatoes artificially inoculated with Alternaria alternata were coated with each film and stored at ambient temperature for 8 days. RESULTS: The incorporation of alternan and postbiotics enhanced both the mechanical strength and thermal stability of the films. Fourier-transform infrared (FTIR) analysis confirmed the successful integration of the bioactive components into the polymer matrix. Scanning electron microscopy (SEM) imaging revealed that postbiotic addition contributed to a rougher and more rigid surface morphology, while alternan improved the structural cohesion of the films. All film formulations exhibited significant inhibitory effects against A. alternata, with the PAG formulation demonstrating the most pronounced antifungal activity. CONCLUSION: These results suggest that the PAG film, enriched with postbiotics, represents a promising biocontrol strategy for mitigating fungal spoilage in tomatoes. In conclusion, this study underscores the potential of combining postbiotics and alternan for the development of active, biodegradable edible films with antifungal functionality for postharvest preservation.
AtıfScopus2WoS2
İncele - MakaleYalnız künye2026Sorting chiral active Brownian particles with radially modulated optical fields
Yücel, Harun
This study presents a numerical investigation of sorting chiral active Brownian particles using radially modulated optical fields. How these factors affect particle trajectories and spatial distributions is examined by systematically varying particle parameters such as self-propulsion speed, angular velocity, and optical fringe modulation. It is found that the average orbit radius of the particle trajectory strongly depends on the ratio of the self-propulsion speed to the average velocity induced by the moving fringe pattern. In particular, the average orbit radius converges to the theoretical orbit radius defined by the ratio of the self-propulsion speed to the angular velocity in the regime where the self-propulsion speed is greater than the fringe-induced velocity. In mixtures of particles with differing chirality, the dynamic response to circular fringe patterns enables effective classification based on motility. These findings suggest that structured light fields can be used to manipulate and selectively sort chiral active particles, which have potential applications in optical micromanipulation and active matter research.
- MakaleYayıncıda açık erişim2026Self-Regulation and Mathematics Anxiety: The Conditional Mediating Role of Mathematical Language Self-Efficacy and Implications for Inclusive Education
Öztürk, Mesut; Ada Yildiz, Kübra; Charitaki, Garyfalia
In this quantitative study, we investigated the conditional mediating role of students’ mathematical language self-efficacy in the relationship between self-regulation and mathematics anxiety. The study employed a relational research design and included survey data from 706 middle school students attending public schools in Turkey. Findings indicated that both self-regulation and perceived self-efficacy in mathematical language use were significantly associated with mathematics anxiety. Moreover, the effect of self-regulation on mathematics anxiety was significantly mediated by students’ perceptions of their ability to understand and use mathematical language self-efficacy. The indirect effect was negative while the direct effect was positive, indicating a suppression (competitive mediation) effect, whereby self-regulation exerts both anxiety-reducing and potentially anxiety-inducing influences through different pathways. Conditional mediation analysis further revealed that this mediating effect varied as a function of students’ perceived academic support, with the indirect effect being non-significant for students who did not receive support. Measurement invariance across gender and grade level was examined to ensure that the constructs were measured equivalently across groups. These findings highlight the importance of fostering both self-regulation skills and mathematical language proficiency, particularly in contexts where students may lack sufficient support. These findings provide a theoretically grounded and practically relevant framework for understanding mathematics anxiety within inclusive mathematics education contexts.
- MakaleYayıncıda açık erişim2026A natural nephroprotective adjuvant for cancer chemotherapy: Rosmarinic acid disrupts IL-17 A-Ferroptosis coupling in Ifosfamide-induced renal injury
Süzen Celbek, Büşra; Şimşek, Hasan; Akaras, Nurhan; Kandemir, Özge; Kızıl, Hamit Emre; Mutlu, Hüseyin; Kandemir, Fatih Mehmet
Rosmarinic acid (RA) is a natural polyphenol with established pleiotropic protective effects. Ifosfamide (IFA) is a potent antineoplastic agent whose clinical utility is severely limited by dose-dependent nephrotoxicity, primarily mediated by its metabolite, chloroacetaldehyde (CAA). This study aimed to investigate whether RA protects against IFA-induced nephrotoxicity and to elucidate the underlying molecular mechanisms. Male Wistar albino rats (n = 7 per group) were allocated into four groups: Control, RA-only (50 mg/kg, p.o., 2 days), IFA-only (a single 500 mg/kg, i.p. dose), and IFA + RA. Serum biochemical markers (urea, creatinine), renal oxidative stress parameters (MDA, GSH, SOD, CAT, GPx), gene expression levels (NF-κB, TNF-α, IL-1β, IL-17 A, ACT1, TRAF6, Caspase-3, Bax, Bcl-2, PTGS2, GPX4, TfR1), and histopathological/immunohistochemical analyses (KIM-1, Nephrin, Caspase-3) were performed 24 h post-administration. IFA induced severe renal dysfunction, marked oxidative stress, and extensive histopathological damage. Mechanistically, IFA initiated a pathogenic cascade activating intrinsic apoptosis and ferroptosis, driven by a self-sustaining IL-17 A-TRAF6-NF-κB inflammatory loop. RA co-treatment (50 mg/kg) significantly reversed all functional, biochemical, and histological damage by strategically breaking this crosstalk, restoring redox homeostasis, and simultaneously restraining both cell death programs. In conclusion, RA protects against IFA nephrotoxicity by targeting the critical inflammation-ferroptosis coupling, positioning it as a highly promising adjuvant candidate for clinical use to mitigate IFA-induced renal injury.
AtıfScopus3WoS4İncele - MakaleYalnız künye2026Tailoring Physicochemical and Technological Properties of α-Glucans Through Mutations of GTFA from Lactobacillus Reuteri E81
Gökcan, Hande; İspirli, Hümeyra; Dertli, Enes
Glucansucrases catalyze the production of α-glucans using sucrose as substrate with distinct physicochemical characteristics originates from mainly the type of linkages, degree of branching and molecular mass. New forms of α-glucans can be produced by applying specific mutations to glucansucrases. In this study, a single and double mutation at Leu933 and Leu935 sites of glucansucrase E81 was applied and L933I and L933I-L935F sites modified glucansucrase was obtained. Structural characterisation of bioengineered α-glucans revealed that ratio of (1 → 3):(1 → 6) linked α-Glc units altered at L933I whereas no (1 → 3)-linked α-Glc units were presented for L933I-L935F modified glucansucrase detected by NMR analysis. Both bioengineered α-glucans had lower molecular weights in comparison to glucan E81 detected by GPC analysis. TGA and DSC analysis were applied to detect the thermal profiles of bioengineered α-glucans whereas FTIR and XRD analysis were applied to determine the alterations in the structural and physical nature of the bioengineered α-glucans, respectively. Finally, SEM and AFM analysis were applied to explore the morphological modifications of the bioengineered α-glucans. This study provides a better understanding for the potential role of final glucan structures on their physicochemical characteristics. Keywords: glucansucrase; carbohydrate engineering; mutation.
AtıfScopus2WoS2İncele - MakaleYayıncıda açık erişim2026Dual antidepressant-like and antinociceptive effects of Hypericum olympicum extract in mice: preclinical behavioral evidence
Saltan, Nagehan; Üçel, Umut İrfan; Göger, Fatih; Özkay, Ümide Demir; Can, Özgür Devrim
Hypericum Tourn. ex L. species exhibit well-documented neuropsychopharmacological activities, yet the central effects of Hypericum olympicum L. remain unknown. Given the frequent comorbidity of depressive symptoms and pain, this study aimed to characterize, for the first time, the antidepressant-like and antinociceptive profile of H. olympicum in mice. A methanolic extract of the aerial parts (HoE) was prepared, and its major phenolic constituents were identified by LC-MS/MS. At behaviorally active doses, HoE (2.5 and 5 mg/kg, i.p.) did not impair motor coordination in the Rota-rod test, in contrast to diazepam (2 mg/kg, p.o.), indicating the absence of neuromotor confounding effects. In both the tail suspension test (TST) and the modified forced swim test (MFST), HoE significantly reduced immobility, with effects comparable to those of fluoxetine (30 mg/kg, p.o.). In the MFST, increased swimming behavior without changes in climbing suggested a predominantly serotonergic component. HoE also produced marked antinociceptive effects in multiple nociceptive models. It increased response latencies in the hot-plate, tail-immersion, and tail-clip tests, reflecting activity in supraspinal and spinal thermal and mechanical nociceptive processing. In addition, HoE significantly reduced acetic acid-induced writhing, indicating visceral antinociceptive activity. Morphine (10 mg/kg, i.p.) served as the positive control in pain assays. LC-MS/MS analysis indicated the presence of major phenolic constituents, including hyperoside, myricetin derivatives, caffeoylquinic acid derivatives, a luteolin/kaempferol-type glucoside, and a biflavone of the biapigenin/amentoflavone type. These findings suggest that HoE possesses dual antidepressant-like and antinociceptive properties and support its further evaluation for disorders at the affect–pain interface.
- MakaleYalnız künye2026Experimental investigation on hybrid parabolic trough collector and thermoelectric generator system for energy, economic, and environmental aspects
Cuce, Pinar Mert; Guclu, Tamer; Cuce, Erdem; Bouabidi, Abdallah; El Hadi Attia, Mohammed
This study experimentally investigates the thermal and electrical performance, economic feasibility, and environmental impacts of a hybrid energy system integrated with a parabolic trough collector (PTC) and thermoelectric generator (TEG). In the established system, solar energy is converted into electrical and thermal energy using a steam turbine and TEG. Experimental data indicate that the system operates with an average efficiency of 71.44%, which varies depending on the intensity of solar radiation. The overall energy efficiency of the system is calculated as 14.51%. In the economic analysis, the payback period of the designed system is approximately 5.4 years, while the levelised cost of energy production (LCOE) is calculated to be 0.075 USD kWh−1. The environmental assessment indicates that the system can prevent 356.18 kg of CO2 emissions annually and save approximately 1499.72 L of water. These findings demonstrate that hybrid systems offer an economically and environmentally sustainable and efficient alternative to energy production.
AtıfScopus1WoS2İncele - MakaleYayıncıda açık erişim2026Analysis of the Impact of Blue Stain on the Color, Glossiness, and Whiteness Properties of Scots Pine Lumber
Ayata, Ümit; Peker, Hüseyin; Ulay, Göksel; Çamlıbel, Osman; Atilgan, Abdi
It is known that blue stain causes a loss of price value for Scots pine wood in the wood trade due to the visual defects it creates. In this study, color parameters [red color tone (a*), lightness (L*) value, yellow (b*) color tone, tone angle (h°) value, and chroma (C*) value], whiteness index (WI*) values, and glossiness measurements [at angles of 20°, 60°, and 85°] were compared in Scots pine (Pinus sylvestris L.) wood with normal and blue rot conditions. According to the color parameters obtained, it was determined that the L* value decreased by 11.43%, a* by 79.95%, b* by 28.86%, and C* by 32.75%, while the h° value increased by 17.74%. With the blue coloration, decreases were observed in the 20° glossiness values measured in the ⃦ and ⊥ directions, while increases were observed in the 60° and 85° glossiness values measured in the ⃦ and ⊥ directions. With the blue coloration, decreases of 12.86% in the ⊥ direction and 29.87% in the ⃦ direction in the WI* values were observed. According to these results, it was determined that the wood material with the blue coloration disease had a darker color.
- MakaleYayıncıda açık erişim2026Gastrointestinal stability and bioactivity of propolis from diverse origins
Can, Zehra; Çelebi, Zeynep Berin; Tunca, Erol; Kolaylı, Sevgi; Sevin, Sedat; Tutun, Hidayet
Propolis is a chemically complex bee product whose biological properties depend on its botanical and geographical origin. However, little is known about how gastrointestinal digestion affects its phenolic profile and bioactivity. In this study, twelve propolis samples from eight countries were evaluated for phenolic and flavonoid contents, antioxidant capacity (FRAP, ABTS+•), and urease inhibition before and after simulated gastric digestion. RP-HPLC–PDA identified 26 phenolic compounds showing substantial compositional diversity. Turkish Bolu propolis retained the highest post-gastric FRAP value, while several samples (BBP, AFP) maintained or enhanced urease inhibition. PCA and HCA highlighted origin-dependent differentiation, identifying digestive stability as a key variable for functional potential.
- MakaleYayıncıda açık erişim2026Finite element analysis driven optimization of an electrodynamic levitation system with permanent magnet Halbach arrays
Ozkat, Erkan Caner; Abdioglu, Murat; Ozturk, U. Kemal
This study presents a finite element analysis (FEA)-driven optimization for the design of an electrodynamic levitation (EDL) system incorporating permanent magnet Halbach arrays (PM-HAs). The primary objective is to maximize the net force difference between lift (Fy) and drag (Fx) forces under realistic physical and manufacturing constraints. The nonlinear electromagnetic behavior of the EDL system is modeled using high-fidelity FEA, capturing the complex interaction between the PM-HA and a conductive plate. At each iteration of the population-based optimization algorithm, full magnetoquasistatic simulations are performed to ensure a physically accurate evaluation of key performance metrics. A comprehensive parametric study involving 256 distinct PM-HA configurations reveals a non-monotonic relationship between the number of magnets and levitation performance, highlighting the critical role of magnetic field distribution. Configurations with 9 to 11 magnets achieve the highest net levitation force. The optimization results indicate that the optimal configuration includes four horizontally aligned permanent magnets (PMs) with a width of 74.00 mm and three vertically aligned PMs with a width of 74.67 mm, along with a 7 mm thick conductive plate having a conductivity of 5 ×107 S/m. This design delivers a maximum lift force of 3550 N and a minimum drag force of 279 N at 100 m/s. The findings demonstrate that effective EDL system design requires a carefully arranged magnet configuration rather than a simple maximization of magnet count or size. The proposed FEA-guided framework offers a robust and scalable methodology for the optimization of high-performance Maglev systems.
- MakaleYalnız künye2026Investigation of magnetic levitation performance in Ag-added DyBa2Cu3O7-δ superconductors fabricated by single-direction melt growth (SDMG) method
Doğruer, M.; Abdioğlu, M.; Motoki, T.; Ozturk, U. Kemal
Abstract This study investigates the magnetic levitation and guidance characteristics of Ag-doped DyBa2Cu3O7-δ superconducting bulks, synthesized by the single-direction melt growth (SDMG) technique. The levitation force, vertical stiffness and lateral guidance force are measured at varying cooling heights (CHs) of 5 mm, 25 mm and 50 mm, with a constant working height (WH) of 5 mm for lateral force measurements. DyBa2Cu3O7-δ samples are cooled using liquid nitrogen (77 K) and thermal stabilization is achieved before force data collection. Results show that levitation forces increase with CH, while the levitation force curves exhibit both attractive and repulsive behavior depending on the CH. The lateral guidance force is higher for the Ag2 sample than for the Ag1 sample and decreased as the temperature decreased. Vertical stiffness also increased with CH and decreased as the levitation gap decreased, confirming heightened guidance forces at smaller distances. The flux density distributions, including both lateral ( B x ) and vertical ( B y ) components, are found to significantly impact the levitation and guidance force performance. Specifically, configurations with concentrated B x gradients improved levitation stability, while configurations with distributed B y led to stronger guidance forces. These findings underscore the importance of optimizing the PMG design to balance B x for levitation and B y for guidance in superconducting systems.
- MakaleYalnız künye2026Effect of ultra-processed food consumption on premenstrual syndrome across different body mass index categories: a cross-sectional analysis
Köktürk, Seda Nur; Taş Yıldırım, Esra; Yardımcı, Hülya
Purpose – This study aimed to examine the association between ultra-processed food (UPF) consumption and premenstrual syndrome (PMS) across different body mass index (BMI) categories in women. Design/methodology/approach – A total of 480 women aged 20–49 years participated in the study between May 2024 and May 2025 in 3 cities in Türkiye. PMS symptoms were assessed using the Premenstrual Syndrome Scale (PMSS), and UPF intake was evaluated according to the NOVA classification using a food frequency questionnaire. Anthropometric measurements, including height and body weight, were taken by researchers, and BMI was calculated for each participant. Findings – The mean BMI of the participants was 24.2 ± 4.9 kg/m2, with an average daily UPF intake of 858.0 ± 133.3 g. Higher UPF intake was significantly associated with increased reporting of PMS, with 7.0% higher odds among normal-weight women, 19.0% higher odds among overweight women, and 41.0% higher odds among women with obesity. Moreover, as UPF consumption increased from the lowest (Q1) to the highest quartile (Q4), the odds of experiencing PMS symptoms were 2.65 times (OR: 2.65, %95 CI: 1.52–4.61), 2.85 times (OR: 2.85, %95 CI:1.60–4.95), and 3.07 times (OR: 3.07, %95 CI: 1.71–5.49) higher, respectively (p = 0.001). Research limitations/implications – These findings underscore a significant association between UPF consumption and PMS symptoms, particularly among women with obesity. Given the high prevalence of PMS and its substantial impact on women's well-being, dietary interventions aimed at reducing UPF intake may represent a promising approach for PMS management and prevention. Originality/value – To the best of our knowledge, this study is the first to examine the relationship between UPF intake and self-reported PMS presence across different BMI categories. 2026
- MakaleYalnız künye2026The effect of augmented reality-enriched stories on altruistic sharing behavior
Kotaman, Hüseyin; Balcı, Aslı; Tutkun, Cansu; Bayram, Zeynep
This study aims to determine the effect of reading augmented reality (AR)-enriched stories related to sharing on children’s altruistic sharing behavior. In recent years, AR applications have been increasingly utilized in early childhood education to enhance engagement and motivation; however, there is limited knowledge about their impact on children’s social and moral development. Addressing this gap, the present study focuses on how interactive, immersive storytelling environments can foster prosocial behaviors, particularly altruistic sharing, in preschool children. A total of 300 children aged 4–6 from 21 kindergarten classrooms participated in the study. The classrooms were randomly assigned to one of three groups: a group that received an AR-enriched sharing storybook, a group that received a non-AR digital sharing storybook, and a group that received a digital storybook unrelated to sharing (control group). The sharing behavior of the participating children was measured before and after the story sessions using a standardized sticker-sharing protocol. Each child was read the story individually, according to their assigned group. The difference between children’s post-story and pre-story sharing behaviors was calculated, and the sharing differences among the three groups were compared using ANOVA. As a result, it was found that the children who listened to the AR-enriched story about sharing showed a significantly greater increase in sharing behavior compared to the other two groups. These findings highlight the potential of AR-supported storybooks as effective pedagogical tools for enhancing altruistic and prosocial behaviors in early childhood education.
AtıfScopus2WoS1İncele - MakaleYayıncıda açık erişim2026Bioactive profile and mineral composition of fruit extracts from four wild hawthorn (Crataegus spp.) species
Çakır, Özlem; Çınar Topçu, Kübra; Sefali, Abdurrahman; Bayyiğit, İshak; İlhan, Gülçe; Singh, Jyoti
This study compared the antioxidant capacity, total phenolic content (TPC), phenolic composition, lipid oxidation level, and mineral profiles of extracts obtained from four wild hawthorn species (Crataegus tanacetifolia, C. orientalis subsp. orientalis, C. orientalis subsp. szovitsii, and C. monogyna) collected from northeastern Türkiye. Significant interspecific variations were observed in DPPH, FRAP, and CUPRAC assays. While C. monogyna had the highest reducing capacity and TPC, C. orientalis subsp. szovitsii had the highest DPPH activity. Ultra-high performance liquid chromatography coupled to tandem mass spectrometry analysis showed that catechin, epicatechin, chlorogenic acid, and quinic acid were the major phenolics, and were particularly abundant in C. monogyna. Despite having a high phenolic content, C. monogyna had the highest malondialdehyde level, indicating that phenolics alone were insufficient to fully inhibit lipid oxidation. Inductively coupled plasma-mass spectrometry mineral analysis detected high levels of K, Mg, and P in all species. Principal component analysis effectively distinguished the species based on their antioxidant, phenolic, and mineral profiles. Overall, hawthorn fruits were confirmed as valuable sources of natural antioxidants and essential minerals.
AtıfScopus1WoS1İncele - MakaleYayıncıda açık erişim2026Virucidal and antiviral activities of maca (Lepidium meyenii) root powder on three pathways of Norovirus as a foodborne pathogen; [Actividades viricidas y antivirales del polvo de raíz de maca (Lepidium meyenii) en tres vías del norovirus como patógeno transmitido por los alimentos]
Korkmaz, Irem Omurtag; Korkmaz, Serol; Parmasiz, Ayse; Mavili, Seda; Bayraktar, Bülent; Sait, Ahmet; Keles, Aysen Gargili
Vitamin C equivalency, the cytotoxicity on murine macrophage cells, and the virucidal and antiviral activities of maca (Lepidium meyenii) powder on murine norovirus (MNV) as a norovirus surrogate for human as a foodborne pathogen were studied. The antioxidant capacity of the maca was determined by MTT assay as vitamin C equivalency (VCEAC). The 50% cytotoxic concentration (CC50) was calculated with the linearity of maca concentrations-cell viability. The activities of maca against the virus was determined as the 50% tissue culture infective dose with Spearman–Karber method. The VCEAC of maca linearly increased with the concentration. The non-cytotoxic concentrations of maca were measured on murine macrophage with a CC50 of 5.77 mg/mL and a CC80 of 1.28 mg/mL. As maca reduced the virus titration based on contact time in the virucidal assay in several conditions, it did not significantly inhibit MNV on three infectivity pathways of host cell at non-cytotoxic concentrations of maca. The result of this first study presented that despite its ineffective in the treatment and prophylaxis of norovirus infection, maca might be an alternative food additive and preservative against human norovirus as an important foodborne pathogen causing outbreaks worldwide. © Los autores. Este artículo es publicado por la Rev Inv Vet Perú de la Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos. Este es un artículo de acceso abierto, distribuido bajo los términos de la licencia Creative Commons Atribución 4.0 Internacional (CC BY 4.0) [https://creativecommons.org/licenses/by/4.0/deed.es] que permite el uso, distribución y reproducción en cualquier medio, siempre que la obra original sea debidamente citada de su fuente original
- MakaleYayıncıda açık erişim2026Cross-Cultural Patterns in Artificial Intelligence Literacy Development: Investigating Country and Gender Differences Among Pre-Service Teachers in Germany and Türkiye
Aksoy, Meltem; Aksoy, Dilara Arzugül; Polat, Elif; Hopcan, Sinan; Bush, Annika
As artificial intelligence (AI) rapidly transforms educational landscapes worldwide, developing AI literacy among pre-service teachers has become increasingly crucial for effective classroom integration and responsible implementation. This comparative study examines AI literacy levels among pre-service teachers in Türkiye (Turkey officially changed its name to Türkiye in a 2022 letter to the UN, with the change taking immediate effect. See here) and Germany, addressing a critical gap in cross-cultural educational research. Using the Scale for the Assessment of Non-Experts' AI Literacy (SNAIL), we analysed data from 605 participants through correlation, ANOVA and MANOVA methods. Our findings reveal significant effects of both country and gender on AI literacy development, with German participants demonstrating higher overall literacy scores than their Turkish counterparts, particularly in critical appraisal and practical application dimensions. Conversely, Turkish participants exhibited stronger technical understanding. Across both countries, male participants consistently achieved higher AI literacy scores than females, though this gender gap was most pronounced in technical understanding. The country variable emerged as the more influential factor across all subdimensions. These results highlight the interplay between educational systems, cultural contexts and gender on AI literacy acquisition, offering valuable insights for teacher education programs seeking to prepare educators for increasingly AI-integrated learning environments.
AtıfScopus1WoS1İncele - MakaleYayıncıda açık erişim2026A Hybrid Deep Learning–Fuzzy–Genetic Framework for Climate-Resilient Agricultural Investment and Resource Allocation Under Carbon Market Uncertainty
Erdogdu, Aylin; Dayi, Faruk; Yildiz, Ferah; Esmer, Yusuf; Ganji, Farshad
Climate variability, environmental uncertainty, and carbon-market dynamics increasingly challenge agricultural investment and resource allocation decisions worldwide. This study proposes an integrated hybrid decision-support framework combining Long Short-Term Memory (LSTM) deep learning, Interval Type-2 Fuzzy Logic Systems, and Genetic Algorithms to support climate-resilient agricultural investment analysis under uncertainty. The framework integrates predictive modeling, uncertainty representation, and multi-objective optimization within a unified computational architecture. The empirical analysis was conducted using agricultural, climate, and carbon-market datasets covering Europe, Asia, and Africa over the 2010–2025 period. Agricultural productivity indicators, commodity price variables, climate-risk parameters, and carbon-market data were integrated into the modeling process. LSTM models were employed to analyze temporal agricultural and climate-related dynamics, while Interval Type-2 fuzzy systems were used to represent ambiguity associated with environmental and market uncertainty. Genetic Algorithms were subsequently applied to optimize investment allocation under conflicting objectives related to profitability, sustainability, and risk. The findings suggest that the proposed hybrid framework may improve adaptive investment evaluation and optimization performance under uncertain climate conditions relative to standalone computational approaches within the scope of the analyzed datasets. The results further highlight the importance of integrating predictive analytics, uncertainty modeling, and sustainability-oriented optimization within agricultural decision-support systems. However, the framework should be interpreted as a climate-resilient decision-support architecture rather than a universally deterministic forecasting mechanism. Overall, the study contributes to the emerging literature on agricultural sustainability and climate-resilient investment by presenting a transparent and uncertainty-aware computational framework under evolving environmental and carbon-market conditions.
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