Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Dertli, Enes(47)
- Pat, Suat(29)
- Özen, Soner(29)
- Şenay, Volkan(24)
- Korkmaz, Şadan(23)
- Esmer, Yusuf(21)
- Şahin, Engin(21)
- Korkmaz, Özge(20)
- Cuce, Erdem(19)
- Öner, Erdal(18)
- Öztürk, Mesut(18)
- Artar, Musa(17)
- Yilmaz, Mustafa Tahsin(17)
- İspirli, Hümeyra(16)
- Ecem Bayram, Nesrin(15)
- Kaya, Yunus(15)
- Cinar, Mehmet(13)
- Cuce, Pinar Mert(12)
- Kamiloğlu, Aybike(12)
- Kutlu, Naciye(12)
- Mercan, Emin(12)
- Birinci, Ahmet(11)
- Bulut, Mehmet(11)
- Yaylacı, Murat(11)
- Bayram, Ozkan(10)
- Can, Zehra(10)
- Doğan, Zeki(10)
- Kahya, Cem(10)
- Karaali, Rabi(10)
- Pabuçcu, Hakan(10)
- Tosun, Figen Çam(10)
- Özdemir, Akın(10)
- Ayazoglu, Rabil(9)
- Battal, Fetullah(9)
- Bayram, Nesrin Ecem(9)
- Büte, Mustafa(9)
- Ertugrul, Mehmet(9)
- Kadakal, Mahir(9)
- Kaplan, Abdullah(9)
- Sarikaya, İsmail(9)
Yayınlar
- MakaleYalnız künye2026Scopus SJRQ1The Effect of Inquiry-based Science Learning Supported By Augmented Reality On Scientific Process Skills and Academic Achievement in Preschool
Arici, Faruk
Inquiry-based learning (IbL) is widely recognized as an effective pedagogical approach in early science education; however, young learners often struggle to engage with abstract concepts and sustain inquiry processes. Augmented reality (AR) has the potential to address these challenges by enhancing interaction, visualization, and engagement in learning environments. Although previous studies have demonstrated the positive effects of IbL and AR separately, empirical evidence examining the combined impact of AR-supported IbL on preschool students’ academic achievement and scientific process skills (SPS) remains limited, particularly in early childhood science education. This study aimed to investigate the effects of AR-supported IbL, IbL alone, and the current preschool science curriculum on children’s academic achievement and SPS. In addition, participants’ perspectives on learning experiences, skill development, and instructional activities were explored. A mixed-methods design was employed with three groups: AR-supported IbL, IbL-only, and a control group following the existing curriculum. Quantitative data were collected using achievement and SPS assessments, while qualitative data were collected through repeated teacher observations and in-depth interviews conducted throughout the intervention. Results indicated that AR-supported IbL led to significantly higher academic achievement and SPS than IbL alone or the current curriculum. While IbL was more effective than the curriculum-based approach, integrating AR further strengthened inquiry cycles and particularly enhanced measurement, communication, and prediction skills. Observational and interview data supported these findings by revealing increased curiosity, engagement, and active participation. The findings suggest that integrating AR within inquiry-based pedagogical frameworks can substantially improve the effectiveness of preschool science education. Implications are discussed for curriculum design, teacher professional development, and the development of developmentally appropriate AR-supported learning environments.
- MakaleYayıncıda açık erişim2026Scopus SJRQ2Life satisfaction and problematic online gaming among young adults: the mediating roles of depression, anxiety, and stress
Bekir, Seyhan; Yayla, İbrahim Erdoğan; Makas, Samet; Manci, Egemen; Yildirim, Murat
Objective: Problematic online gaming has emerged as a growing concern among young adults, often linked to reduced well-being and increased mental health problems. This study aimed to investigate whether depression, anxiety, and stress mediate the relationship between life satisfaction and problematic online gaming among young adults. Method: A total of 336 Turkish students participated in this cross-sectional study by completing self-reported measures of life satisfaction, depression, anxiety, stress, and problematic online gaming via an online survey. Results: Results indicate that lower life satisfaction related to higher levels of stress and depression, which in turn increase problematic online gaming behaviors. In contrast, anxiety did not have a significant mediating role, since its confidence interval included zero. Conclusions: In conclusion, both direct and indirect associations were found between lower life satisfaction and problematic online gaming, through stress and depression. Anxiety was not found to have a significant mediating effect in this relationship. These findings suggest that interventions aimed at enhancing life satisfaction and reducing psychological suffering could help to prevent such behavior.
AtıfWoS1
İncele - MakaleYayıncıda açık erişim2026Scopus SJRQ1Psychological well-being, body image and self-esteem in elite and amateur female taekwondo athletes in Türkiye
Gönen, Mevlüt; Türkmen, Mutlu; Çakır, Zekai; Arı, Fatih; Çatıkkaş, Fatih
Background: Female athletes competing in weight-category sports may experience unique psychological pressures related to body image, performance expectations, and sociocultural gender norms. While elite sport participation is often assumed to enhance psychological functioning, evidence remains mixed. This study examined differences in psychological well-being, body image, self-esteem, and athletic identity between elite and amateur female taekwondo athletes in Türkiye, a cultural context characterised by distinct gender and body norms, and explored their associations with psychological well-being. Türkiye represents a theoretically relevant context in which institutional weight regulation intersects with sociocultural gender norms, creating a setting in which body-related psychological experiences may be uniquely shaped by both sport structures and cultural expectations. Methods: A cross-sectional design was employed with 233 female taekwondo athletes (107 elite, 126 amateur; M_age = 22.0 ± 3.2 years). Participants completed validated Turkish versions of the Warwick–Edinburgh Mental Well-Being Scale (WEMWBS), the Body Appreciation Scale-2 (BAS-2), the Rosenberg Self-Esteem Scale (RSES), and the Athletic Identity Measurement Scale (AIMS). Independent samples t-tests, one-way analysis of variance (ANOVA), Pearson correlations, and hierarchical multiple regression analyses were conducted. Results: No significant differences were found between elite and amateur athletes in psychological well-being or self-esteem. Elite athletes demonstrated significantly stronger athletic identity (p <.001), whereas amateur athletes reported significantly, though modestly, higher body image scores (p =.046). In regression analyses, self-esteem (β = 0.428, p <.001) and body image (β = 0.354, p <.001) were significant predictors of psychological well-being, jointly explaining 52.6% of the variance (R² = 0.526), with self-esteem showing the strongest independent association. Effect size estimates indicated that differences were large for athletic identity (d = 0.75), small for body image (d = 0.26), and negligible for psychological well-being and self-esteem (d = 0.09 and d = 0.13, respectively). Conclusions: Psychological well-being in female taekwondo athletes was more strongly associated with self-esteem and body image than with competitive level. These findings support prioritising self-esteem and body appreciation in structured psychological support programs for female athletes in weight-category sport systems.
- Kitap BölümüYalnız künye2026Evaluation of the Role of Local Foods within the Scope of Sustainable Tourism Principles
Ünlü, Hami; Apak, Ömer Ceyhun
- MakaleYalnız künye2026Scopus SJRQ1Molecularly engineered bacterial biopolymer as multifunctional interfacial regulators for dendrite-free and stable aqueous zinc-ion batteries
Adhami, Sadaf; Bayram, Sinan; Coskun, Sahin; Sonmezoglu, Savas; Yuksel, Recep
Aqueous zinc-ion batteries (ZIBs) are promising candidates for next-generation energy storage owing to their intrinsic safety, low cost, and high theoretical capacity. However, their practical application remains hindered by dendrite formation and parasitic side reactions such as hydrogen evolution reaction (HER), anode corrosion, and passivation. Herein, we introduce a sustainable and scalable strategy based on a bacterial eumelanin biopolymer (S2–20), synthesized via the oxidative metabolism of Pseudomonas aeruginosa with indole derivatives, and directly deposited onto Zn foil via spin coating. The S2–20 biopolymer provides a conformal, ion-permeable interface that simultaneously guides uniform Zn nucleation, enhances electrolyte wettability, and suppresses parasitic side reactions. Symmetric cells demonstrate significantly increased Zn2+ transference number (0.908), and prolonged cycling stability exceeding 1200 h at 1.0 mA cm−2 and 200 h under harsh conditions up to 20 mA cm−2. Full cells with V2O5 cathodes further confirm remarkable specific capacity (374 mAh g−1 at 1.0 A g−1) and capacity retention, maintaining 150.5 mAh g−1 after 2200 cycles at 1.0 A g−1. This work presents the first demonstration of a bacterial eumelanin biopolymer as a multifunctional interfacial stabilizer for Zn metal, offering a truly green, cost-effective, and scalable pathway toward safe and sustainable aqueous ZIBs.
AtıfOpenAlex1İncele - MakaleYalnız künye2026Scopus SJRQ1Multidimensional characterization of graphite anode degradation in used lithium-ion batteries under real-life conditions
Temur, Hakan; Kara, Adem
The degradation of graphite anodes in lithium-ion batteries remains a critical barrier to extending cycle life and enabling efficient recycling. This study employs a multi-technique approach combining XRD, FTIR, SEM-EDS, ICP-MS, and XPS to investigate degradation mechanisms in graphite anodes recovered from commercial spent mobile phone batteries. While unused reference anodes show no significant degradation, spent anodes exhibit surface cracks, porous networks, heterogeneous SEI growth, and pronounced oxygen/fluorine accumulation. FTIR and XRD confirm increased LiF and Li2CO3 formation, indicating electrolyte decomposition and structural breakdown. ICP-MS reveals transition metal migration (Co, Ni, Mn) and current collector corrosion (Cu, Al), which correlate with degradation severity. Surface-sensitive XPS analysis further resolves a progressive degradation pathway: from limited SEI formation in low-degradation samples, through concurrent corrosion and metal crossover in medium-degradation samples, to extensive LiF-rich SEI accumulation in the most degraded samples. These findings are consistent with a self-accelerating chain-reaction mechanism wherein electrolyte decomposition, metal migration, and corrosion synergistically accelerate capacity fade. This study proposes a mechanistic framework for understanding heterogeneous degradation in real-world spent batteries and offers a practical, multi-technique diagnostic tool for recycling and second-life applications.
- MakaleYalnız künye2026Scopus SJRQ2DRAWING THE BIG PICTURE OF OPEN EDUCATION: A COMPARATIVE BIBLIOMETRIC ANALYSIS
Aksoy, Dilara Arzugul
This paper aims to provide a comprehensive overview of research on open education through bibliometric analysis. English-language articles published between 1955 and 2024 in the Scopus and Web of Science databases were selected for analysis. A variety of analytical techniques were employed, including descriptive analysis, co-authorship analysis, co-occurrence analysis, and citation analysis. The findings of this study indicated that research on open education steadily increased until 2020, after which it began to decline. The study also revealed that open education research is conducted globally, though it is predominantly concentrated in countries such as the United States and the United Kingdom. Furthermore, the majority of research in open education focuses on massive open online courses, followed by open educational resources. The International Review of Research in Open and Distributed Learning was identified as the journal with the highest number of open education articles across both databases. The research findings discussed in detail, and suggestions for future research are provided. This study offers an overview of open education research, assesses the current state of the field, and provides guidance for future investigations.
- MakaleYalnız künye2026Scopus SJRQ1Resilience-oriented seismic retrofit of heritage masonry minarets using hybrid base isolation and supplemental damping
Ergun, Mustafa; Tonyali, Zeliha; Kiral, Adnan; Elias, Said
Historic masonry mosques represent a highly vulnerable class of cultural heritage structures whose seismic fragility stems from their complex geometries, heterogeneous material composition, and rigid load-transfer mechanisms. This study presents a resilience-oriented seismic performance improvement of the historic masonry minaret of the Bayburt Grand Mosque, a structure with limited lateral deformation capacity that challenges the applicability of conventional strengthening measures. To address this limitation, a hybrid retrofitting strategy is introduced, integrating lead rubber bearings (LRBs) with supplemental viscous dampers (VDs) at the foundation level. This combined system—implemented for the first time in a historic masonry minaret—aims to enhance energy dissipation and displacement control through a minimally invasive and architecturally compatible approach. Finite element analyses (FEA), coupled with MATLAB-supported optimization routines, were used to calibrate isolator stiffness and damper coefficients. Three configurations were evaluated: fixed-base, LRB-isolated, and hybrid LRB–VD systems. Nonlinear time-history analyses (NTHAs) using the 1992 Erzincan (Otlukbeli) earthquake record quantified displacements, stress–strain responses, and damage progression. Results show that while base isolation mitigates seismic demand, it remains insufficient under restricted deformation capacity. The proposed hybrid system reduces peak horizontal displacements from 22 cm to 12 cm, limits drift ratios below 0.17 %, and lowers maximum tensile stresses from 4.890 MPa to 0.490 MPa—well below the masonry tensile strength of 0.880 MPa. Two iterative analytical design methodologies are additionally introduced to derive effective isolator stiffness and viscous damping coefficients, enabling systematic integration into resilience-focused evaluation frameworks. Overall, the study advances reliability-based, conservation-compatible retrofitting practices for historic masonry minarets and supports sustainable strategies for seismic risk mitigation.
AtıfScopus8WoS7OpenAlex6İncele - MakaleYayıncıda açık erişim2026Scopus SJRQ1Social Media-based Interventions to Promote Physical Activity in People with Disabilities: A Systematic Review
Yarımkaya, Erkan; Oğur, Yekta Göksel; Aydemir, Uğur
Purpose: This systematic review summarized and evaluated 13 studies investigating the effectiveness of social media-based interventions to promote physical activity (PA) among people with disabilities (PWD). Methods: Findings regarding study, participant and intervention characteristics, and PA outcomes were extracted. The methodological quality of the studies was assessed using the Crowe Critical Appraisal Tool. Results: Findings regarding the effectiveness of social media-based interventions to promote PA among PWD varied, and provide the support for social media-based PA intervention benefits for people with autism spectrum disorder, attention deficit hyperactivity disorder, physical disability, and cancer patient; however, there was no support for its use in people with developmental coordination disorder. Conclusion: Social media-based interventions may have the potential to promote PA among PWD. However, to fully leverage this potential, further research is needed. This review provides valuable insights for researchers, parents, and educators seeking to promote PA among PWD.
- MakaleYalnız künye2026Scopus SJRQ4Microwave assisted green synthesis of nano-sized biogenic silver in extract of Phlomis linearis: potential anticancer and antimicrobial activities
Orçan Çayır, İlayda; Tahta, Beyhan; Cömertpay, Sabahattin; Uruş, Serhan; Bülbül, Ali Savaş; Aygan, Ashabil; Aksan, Mehmet Emrah
Silver nanoparticles (AgNPs) are known for their significant anticancer and antimicrobial activities in the field of medicine. In the present study, AgNPs were synthesized using a microwave-assisted green synthesis process, in which Ag(I) ions were reduced by organic compounds extracted from the leaves and stems of Phlomis linearis, an endemic plant which acted as both reducing and stabilizing agents. Although various species of the Phlomis genus have been studied in the literature, the synthesis of the nano-sized biogenic silver with reducing Ag(I) in the extract of the endemic plant P. linearis is reported here for the first study time, along with the evaluations of its bioactive properties. The obtained AgNPs were characterized by optical, structural, morphological, etc. techniques such as Ultraviolet–visible spectroscopy (UV–Vis.), Fourier-Transform Infrared Spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), transmission electron microscopy (TEM), dynamic light scattering (DLS), and photoluminescence (PL). Gas chromatography − mass spectrometry (GC–MS) and FT-IR techniques were used in order to evaluate the biochemical-reduction mechanism. When their antimicrobial activities were determined by the well diffusion method on six bacterial strains, the results showed that P. linearis exhibited antimicrobial activity against all tested bacteria. Additionally, the investigation of the anticancer activity of the particles by using the MTS method on a breast cancer cell line (MCF-7) and a healthy human cell population (human umbilical vein endothelial cells [HUVEC]) revealed that our AgNPs were more cytotoxic toward the cancerous cells compared to the non-cancerous ones (p < 0.001).
- MakaleYalnız künye2026Scopus SJRQ1Reading intentions, not just behaviours: a NIKOM-informed pedagogical approach for religious education
Çinici, Murat
Religious education (RE) meets a recurring diagnostic problem: a pupil can recite doctrine, join in ritual talk, and give the ‘right’ moral answer while the underlying belief stays untouched. This article introduces the Intention Code Model (NIKOM; Niyet Kodu Modeli) to RE as a disciplined language for that problem. NIKOM is a mechanistic cognitive framework built on conditional IF→THEN ‘codes’ that probabilistically chain, activate, and align bodily and cognitive systems, and can be rewritten. Its central claim–a surface-compliance paradox, whereby observable behavioural change need not indicate code-level change–maps onto Kelman’s distinction between compliance and internalisation. The article sets out NIKOM for an RE readership, positions it among established RE pedagogies, distinguishes it from Gollwitzer’s implementation intentions, and derives a pedagogical stance, dialogue moves, and a developmental proposal for ‘code literacy’, with worked religious and non-religious vignettes for primary and secondary levels. The setting is non-confessional, educational RE; behaviour is no index of belief, and the affective and spiritual dimensions of learning are not reduced to cognition alone. NIKOM is offered as a theoretical synthesis awaiting validation, not a proven method; the article closes with an ethical analysis of ‘rewriting’ pupils’ codes and a research agenda.
- MakaleYalnız künye2026Scopus SJRQ1Structure-guided discovery of submicromolar 1,2,4-triazole–Schiff-base inhibitors of glutathione reductase
Manap, Sevda; Akar, Hande; Medetalibeyoğlu, Hilal; Atalay, Abdurrahman; Can, Zehra; Kara, Yakup; Alkan, Muzaffer; Beytur, Murat; Yüksek, Haydar; Ortaakarsu, Ahmet Buğra
Glutathione reductase (GR) plays a crucial role in maintaining cellular redox balance and is a promising target for ferroptosis-based cancer therapies. In this study, we report the design, synthesis, and comprehensive evaluation of a novel series of 1,2,4-triazole–Schiff base succinate derivatives (AUR-514–518) as potent GR inhibitors. In vitro Mannervik assays revealed vigorous submicromolar inhibitory activity, with AUR-517 emerging as the most effective (IC50 = 0.471 ± 0.032 μM), significantly surpassing quercetin (IC50 = 214.5 ± 18.5 μM). Antioxidant profiling revealed negligible radical scavenging activity; however, modest CUPRAC responses suggest a target-specific mechanism. To elucidate the molecular determinants of inhibition, we employed deep-learning–assisted protein–ligand affinity predictions, molecular dynamics simulations, MM/GBSA free-energy calculations, and dimensional reduction analyses. These computational studies revealed dual binding modes at both the catalytic site and dimer interface, with AUR-517 forming stable interactions with key catalytic residues, consistent with experimental potency rankings. The RMSD/RMSF profiles indicated enhanced conformational stability of GR–ligand complexes, while binding energy landscapes underscored the superior stability of AUR-517. Consequently, these findings establish the AUR series as a new class of structurally validated GR inhibitors, with AUR-517 representing a lead scaffold for the rational development of ferroptosis-sensitizing agents with translational potential in oncology.
AtıfScopus3WoS3OpenAlex5
İncele - MakaleYalnız künye2026Scopus SJRQ2Effects of Parent-Child Coparticipation in Physical Activity on Physical Activity Levels and Motor Skills of Children With Autism Spectrum Disorder
Aydemir, Uğur; Yarımkaya, Erkan
This study aimed to examine the effects of parent-child coparticipation in physical activity (PA) on the PA levels and fundamental motor skills (FMSs) of children with autism spectrum disorder. Participants were assigned to one of the following three groups: (a) a parent-child group (n = 14), (b) a child group (n = 13), and (c) a control group (n = 13). After 8 weeks of intervention, the within-group comparison revealed a significant increase in PA levels and FMSs in children with autism spectrum disorder in the parent-child group and the child group (p < .001). The between-group comparison further showed that children in the parent-child group had statistically higher scores for PA levels and FMSs than children in the child and control groups (p < .001). These findings suggest that parent-child coparticipation in PA may be a promising component of family-based interventions to promote PA and facilitate the acquisition of FMSs among children with autism spectrum disorder.
- MakaleYalnız künye2026Scopus SJRQ2A Multi-perspective Exploration of Contact Behavior in Orthotropic Layer Resting on Isotropic Half-Plane
Terzi, Merve; Öner, Erdal; Uzun Yaylacı, Ecren; Oktay, Mine Gül; Yaylacı, Murat
Contact problems which concern the stress distribution resulting from the interaction between two elastic bodies have long been a focus of research. In the field of solid mechanics, they hold particular importance because loads are generally transmitted to deformable bodies through their points of contact. This study investigates the contact problem of a layered medium containing a homogeneous orthotropic layer and an isotropic half-plane using a multi-method approach. A rigid flat indenter is applied to the orthotropic layer with frictional effects neglected, while the influence of body forces in the orthotropic layer is taken into account. Key contact parameters such as the contact stress under the indenter, the initial separation load, and the point of initial separation are determined as part of the analysis. The study is structured into three main sections. In the first section, the problem is analytically examined based on classical elasticity theory. Within this framework, a singular integral equation governing the contact problem is derived and solved numerically. The second section presents a finite element analysis using ANSYS software to simulate the contact interaction and evaluate the stress distribution. In the third and final section, the problem is addressed through artificial neural network (ANN) techniques, offering a data-driven perspective. Ultimately, the results obtained from the analytical, numerical (FEM), and ANN-based methods are compared, showing excellent agreement across all approaches.
AtıfScopus15WoS10OpenAlex16İncele - MakaleYalnız künye2026Scopus SJRQ2Valorization of pickled cabbage waste as a novel pectin source: Optimization, characterization
Erten, Tayyibe; Cebeci Aydın, Fatma
Recovery of food ingredients from agro-industrial by-products has become increasingly essential for sustainable food production through energy saving and lessening the carbon footprint. Pickled white cabbage production generates high amounts of pickled cabbage waste that contain valuable goods such as pectin. This study aimed to evaluate the valorization of pectin from pickled cabbage waste by comparing the conventional (CE) and ultrasound-assisted extraction (UAE). The UAE provided 2.14 times higher pectin yield (30.32%) compared to CE (14.14%) while reducing energy consumption and carbon dioxide emission (~ 7 times lower). Pectins obtained from conventional extraction (CEP) and ultrasound-assisted extraction (UEP) had high amounts of galacturonic acid (85.06 ± 1.76%, 87.95 ± 6.99%, respectively) and low degree of esterification (17.08 ± 1.14%, 14.71 ± 0.00%). The monosaccharide compositions of pectin were similar for CEP and UEP, comprising of galacturonic acid, glucose, arabinose, rhamnose and xylose. FT-IR, NMR and SEM confirmed the structural characteristics of pectins, and the effect of ultrasonication. Furthermore, UEP presented superior technological characteristics including water holding capacity (5.29 ± 0.38 g water/g pectin), oil holding capacity (1.58 ± 0.11 g oil/g pectin), emulsion activity (43.61 ± 1.12%) and emulsion stability compared to CEP. These findings show that pickled cabbage waste is a valuable source of low-methoxyl pectins and UAE is a promising extraction method for obtaining high amount of pectin along with reduced processing time and energy consumption. The UAE method using of citric acid instead of hazardous acids also offers environment-friendly method for pectin extraction.
AtıfScopus1WoS1OpenAlex1İncele - MakaleYalnız künye2026Scopus SJRQ2Weathering effects on pendulum hardness, and pull-off adhesion testing of water-based varnish on thermally treated iroko wood
Ulay, Göksel; Akter, Mete; Çakıcıer, Nevzat; Ayata, Ümit
This study evaluated the effects of different weathering durations (168, 336, and 504 h) on surface hardness and adhesion strength of both heat-treated (1.5 h at 190 °C and 2 h at 212 °C) and untreated iroko (Chlorophora excelsa) wood surfaces after application of water-based varnish (WBV). Pendulum hardness (s) and pull-off adhesion (MPa) tests were performed after weathering. According to the results, in the untreated control group, hardness increased from 30 s to 45 s after 504 h of weathering, showing a 48% increase. In the samples treated at 190 °C, hardness increased from 25 s to 41 s after 504 h, showing a 61% increase. The highest increase was observed in the samples treated at 212 °C. Here, the hardness increased from 23 s to 44 s, representing a 91% increase after 504 h of weathering. The highest initial surface adhesion strength (5.30 MPa) was obtained in the unheated samples; however, this value decreased significantly after weathering. Although the initial adhesion strength was lower in the heat-treated samples, those treated at 212 °C for 2 h exhibited more stable weathering performance. The results show that the acceleration of weathering and the application of heat significantly affect the effectiveness of the varnish coating.
- MakaleYalnız künye2026Scopus SJRQ2Microwave-assisted extraction of pectin from persimmon: physicochemical properties, structural characterization and greenness assessment
Yılmaz, Özlem; Kutlu, Naciye; Kamiloğlu, Aybike; Elbir Abca, Tuğba
In this study, the microwave-assisted extraction (MAE) of pectin from persimmon was optimized using a Box-Behnken experimental design, with pH, extraction time, and liquid-to-solid ratio as independent variables. The optimization results obtained through response surface methodology indicated optimum conditions of pH 1.78, extraction time of 8 min, and a liquid-to-solid ratio of 125 mL/g, corresponding to a predicted pectin yield of 4.28%. In the validation experiment, the actual pectin yield was determined to be 3.79 ± 0.04%, confirming a good agreement with the model predictions. The degree of esterification, methoxyl content, galacturonic acid and ash contents, water- and oil-holding capacities, antioxidant activity, rheological behavior, and structural properties (FT-IR, DSC, and 1H NMR) of the samples obtained under optimal MAE and conventional extraction conditions were compared. Based on the degree of esterification, both samples were classified as high-methoxyl, with galacturonic acid contents of 41% and 42% for the MAE and conventionally extracted samples, respectively; both values were below the ≥ 65% level specified for commercial food-grade pectin. The ash content was higher in the MAE sample (7.22%) than in the conventionally extracted sample (1.56%). MAE resulted in a pectin-rich complex with a relatively low galacturonic acid content and higher antioxidant activity than the conventionally extracted sample. Furthermore, the MAE sample exhibited higher water-holding capacity but lower oil-binding capacity than the conventionally extracted sample. Rheological analysis showed that the MAE sample exhibited higher apparent viscosity and shear stress than the conventionally extracted sample. FT-IR analysis revealed more pronounced absorption bands in the MAE sample, suggesting structural differences. DSC analysis revealed differences in the thermal behavior of the MAE and conventionally extracted samples. Additionally, 1H NMR analysis supported the presence of characteristic pectic structural features in both samples. The greenness assessment of the method was assessed using the Greenness Evaluation Metric for Analytical Methods (GEMAM), which yielded an overall score of 7.482, indicating a high level of environmental acceptability. Overall, MAE can be considered an efficient and sustainable approach for obtaining a pectin-rich complex with antioxidant activity from persimmon.
- MakaleYayıncıda açık erişim2026Scopus SJRQ1The effect of hawthorn vinegar, black mulberry syrup, and green tea on oral mucositis and oral health-related quality of life in individuals with diabetes: a single-blind, randomized controlled trial
Demiraǧ, Hatice; Akeren, Zahide
Objective – This study was designed as a single-blind randomized controlled trial to investigate the effects of hawthorn vinegar, black mulberry syrup, and green tea on oral mucositis and quality of life related to oral health in individuals with diabetes. Methods – Total of 120 participants were divided into four groups (hawthorn vinegar, black mulberry syrup, green tea, control; n = 30 each) and the study was completed. All participants completed the “Patient Information Form, ” “Oral Assessment Guide (OAG/ADR), ” and “Oral Health-Related Quality of Life Scale (OHQoL-UK)” before the study, on the 7th day, and after the study. In the experimental groups (hawthorn vinegar group, black mulberry syrup group, green tea group). In addition to routine oral mucositis treatment, patients with DM gargled for 1 min with diluted hawthorn vinegar [1 tablespoon (10 cc) mixed with 40 cc of water], pure black mulberry syrup, or green tea solution three times a day for 14 days, 15–20 min before meals. Results – Patients in the hawthorn vinegar group showed a decrease in oral mucositis and an increase in oral health-related quality of life at the interim measurement (day 7) and final test (day 14) measurements (p < 0.05). A negative correlation was found between the severity of oral mucositis and quality of life (p < 0.05). Conclusion – Although there was no difference between hawthorn vinegar and black mulberry syrup, they were found to be more effective than green tea in reducing oral mucositis and improving oral health-related quality of life, and all three complementary treatments were found to be effective. Clinical Trial Registration – identifier [NCT06481254]. https://register.clinicaltrials.gov/prs/beta/studies/S000E5O000000043/recordSummary.
- MakaleYalnız künye2026Scopus SJRQ2Post-structuralist perspectives on global education: Reconstructing narratives and power dynamics in comparative education
Aksakallı, Ayhan
This article explores the transformative potential of post-structuralist theories in rethinking global education policies and comparative education practices. It critically examines the power dynamics underlying hegemonic narratives in education and highlights the ways in which these narratives marginalize local knowledge systems and reinforce inequalities. Using Foucault’s notions of regimes of truth and Deleuze and Guattari’s rhizomatic learning, the article demonstrates how post-structuralist frameworks challenge normative assumptions and propose alternative models based on equity, inclusion, and diversity. Local adaptations, counter-narratives, and strategies of resistance are analyzed as key mechanisms for negotiating and transforming global education policies in specific cultural and social contexts. The discussion emphasizes the importance of embracing epistemological pluralism and participatory governance to promote more equitable and inclusive educational practices. Concluding with directions for the future, the article underlines the relevance of post-structuralist approaches for advancing critical research and practice in comparative education.
AtıfOpenAlex2İncele - DüzeltmeYayıncıda açık erişim2026Scopus SJRQ1Correction: examination of trauma levels and earthquake stress coping strategies of university students who exercise and do not exercise after an earthquake
Çakır, Zekai; Erbaş, Ülfet; Gönen, Mevlüt; Naci, Ahmet; Güzel, Sema
Correction: BMC Psychology (2025) 13:867 https://doi.org/10.1186/s40359-025-03108-x. Following publication of the original article [1], the authors identified errors in references 67 and 110. The incorrect and correct references are listed below. Additionally, the authors requested the inclusion of the following statement in the Author Contributions section: "During the preparation of this manuscript, AI-assisted tools were used solely for language editing, grammar correction, and improving readability." Reference No. Incorrect reference Correct reference Nolen-Hoeksema S, Aldao A. Gender and coping: A meta-analysis of general research findings. J Cogn Psychother. 2012;25(1):35–56. https://doi.org/10.1146/annurev-clinpsy-032511-143109. Nolen-Hoeksema S. Emotion regulation and psychopathology: the role of gender. Annu Rev Clin Psychol. 2012;8:161–187. https://doi.org/10.1146/annurev-clinpsy-032511-143109 Kunz V. Sport as a post-disaster psychosocial intervention in Bam, Iran. In: the social impact of sport. Routledge; 2019. p. 39–49. https://www. taylorfrancis.com/chapters/edit/https://doi.org/10.4324/9781315875057-4/sport-post-disaster-psychosocial-intervention-bam-iran-valer Kunz V. Sport as a post-disaster psychosocial intervention in Bam, Iran. Sport Soc. 2009;12(9):1147–1157. doi:https://doi.org/10.1080/17430430903137803.