Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Dertli, Enes(115)
- Kaya, Yunus(50)
- Ayata, Ümit(48)
- Şahin, Engin(48)
- İspirli, Hümeyra(46)
- Bayraktar, Bülent(42)
- Şenay, Volkan(41)
- Can, Zehra(39)
- Özen, Soner(37)
- Bayram, Sinan(35)
- Pat, Suat(35)
- Öztürk, Mesut(35)
- Ecem Bayram, Nesrin(34)
- Esmer, Yusuf(34)
- Battal, Fetullah(33)
- Artar, Musa(32)
- Öner, Erdal(32)
- Korkmaz, Şadan(31)
- Yilmaz, Mustafa Tahsin(31)
- Ertugrul, Mehmet(30)
- Mercan, Emin(30)
- Hasar, Ugur Cem(29)
- Kutlu, Naciye(28)
- Özdemir, Akın(27)
- Kul, Murat(26)
- Cuce, Erdem(25)
- Kamiloğlu, Aybike(25)
- Bayram, Ozkan(24)
- Sefali, Abdurrahman(24)
- Sert, Durmuş(24)
- Çolak, Murat(24)
- Ayazoglu, Rabil(22)
- Gıdık, Betül(22)
- Maden, Sedat(22)
- Ustabulut, Mete Yusuf(22)
- Uçurum, Metin(22)
- Akeren, Zahide(21)
- Dirican, Ebubekir(21)
- Kara, Yakup(21)
- Abdioglu, Murat(20)
Yayınlar
- MakaleAçık Erişim2025Scopus SJRQ1Examination 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; Ceyhan, Mehmet Ali; Öktem, Tuncay; Kul, Murat; Dilek, Ahmet Naci; Güzel, Sema
Background: Earthquakes are calamities of devastating nature that induce longterm post traumatic stress on affected victims. As such, they are recognized worldwide as being huge sources of stress. In this research study, the first objective is to assess the level of trauma and earthquake stress of university students who exercise and those who do not. Methods: This study utilized the descriptive survey research method. The sample comprised 378 male and 300 female students who experienced the socially detrimental 7.7 Mw and 7.6 Mw earthquakes in Turkey on February 6, 2023. The data were both face-to-face and via computer-administered questionnaire with the tools of “Post-Earthquake Trauma Level Scale” and “Earthquake Stress Coping Strategies Scale.” After checking for normality, the parametric tests were used, the t-test to compare two groups of data, and ANOVA for three or more groups of data. Furthermore, Pearson correlation analyses were performed to compare the interactions between students who exercise and those who do not. Results: The study found that gender affected trauma levels, with female students (X = 73.483) exhibiting significantly higher trauma levels than male students (X = 68.799) (p < 0.001). Students who engaged in regular physical activity (X = 67.71) were found to have lower trauma levels compared to those who did not exercise (X = 71.97). Participants who feared being caught by the earthquake at home or school (X = 73.32), experienced the loss of someone close (X = 88.10) or believed that adequate precautions against the earthquake had not been taken (X = 71.73) had higher trauma scores. According to the results of the ANOVA test, students from the Departments of Sports Sciences (X = 69.78) and Religious Studies (X = 69.63) were observed to have lower trauma levels. Pearson correlation analysis showed a positive and moderate relationship between trauma levels and earthquake stress coping strategies among students who engaged in regular physical activity (r =.176, p < 0.01). Conclusions: The research identified that factors such as gender, regular exercise, the experience of losing a loved one, and the perception that insufficient precautions were taken all significantly influence trauma levels. Moreover, the findings highlighted that regular physical exercise serves as an effective strategy for managing and coping with trauma.
AtıfScopus9WoS9OpenAlex14
İncele - MakaleAçık Erişim2025Scopus SJRQ4Effect of Plasma Electrolytic Oxidation Process on Corrosion Resistance of Al-Coated AZ61 Magnesium Alloy
Durna, İdris; Çatar, Recep; Altun, Hikmet
Magnesium alloys are extensively utilized in aerospace, aviation, and automotive sectors due to their low density and high specific strength, which offer significant advantages for lightweight structural applications. Their low density especially directs the attention of the aviation sector, where lightness is necessary, to these alloys. However, one of the disadvantages that restricts their use in the industry is their low corrosion resistance. In this study, the Plasma Electrolytic Oxidation (PEO) process was applied in a silicate-based electrolyte to AZ61 magnesium alloy pre-coated with aluminum using the electric arc spraying technique. To examine the characteristics of the fabricated coatings, their phase structures, surface features, and elemental compositions were investigated through XRD, SEM, and EDS analyses. Corrosion performances of coatings were investigated by potentiodynamic polarization test in 3.5% NaCl solution. As a result of electrochemical tests, corrosion current density values for the base sample (AZ61) and PEO coating (AZ61-PEO) were determined as 36,29 μA. cm−2 and 6,53 μA. cm−2, respectively. The findings highlight that the Al₂O₃ layer formed following PEO treatment significantly enhanced the corrosion resistance compared to the base sample.
- MakaleAçık Erişim2025Scopus SJRQ2From Marx to the classroom: Understanding teacher alienation in policy contexts
Aksakalli, Ayhan
This article examines the phenomenon of teacher alienation through the lens of Marxist theory, exploring how capitalist and bureaucratic structures inherent in educational policies contribute to feelings of disconnection and disenfranchisement among educators. Drawing upon Marx’s concept of alienated labor, the study delves into the ways in which teachers experience alienation within the context of modern education systems. By tracing the historical roots of alienation in capitalist societies, the article highlights the pervasive influence of market-oriented reforms and accountability measures on teacher autonomy and professional agency. Furthermore, the study examines the implications of teacher alienation for both educators and students, emphasizing the detrimental effects on teacher well-being, job satisfaction, and instructional effectiveness. It explores how feelings of alienation can hinder collaboration, innovation, and collective efficacy within educational communities, perpetuating cycles of disengagement and disaffection among educators and students alike. Ultimately, the article calls for a reimagining of education that prioritizes the empowerment and well-being of educators, challenging dominant paradigms and policies that perpetuate teacher alienation. By centering the voices and experiences of teachers, policymakers can work toward creating more supportive, inclusive, and equitable learning environments that foster a culture of collaboration, creativity, and social justice in education.
AtıfScopus7WoS6OpenAlex10İncele - MakaleYalnız künye2025Scopus SJRQ1Exploring the transformative power of GenAI in education: an exploratory journey from social studies classes
Yetişensoy, Okan
The potential of GenAI in educational settings has attracted considerable attention, yet practical explorations of its use in K-12 classrooms are still scarce. This research aims to explore the role of GenAI models in social studies, focusing on their influence on learning-teaching processes and understanding of AI. While exploring the influence of GenAI on pedagogical aspects from the perspective of the teacher and students, this qualitative study also embraces AI as a cross-curricular theme and seeks to understand how GenAI-supported teaching activities shape students’ AI understanding. The study group of this research, conducted according to the basic qualitative research design, consisted of 21 middle school students studying in one class and a social studies teacher who implemented the practices. The primary data collection tool for the research was semi-structured interview forms. In the relevant research, a teaching framework supported by GenAI, combining “Teaching with AI” and “Teaching about AI” was developed. During the four-week process, the practitioner teacher covered the curricular outcomes using lesson plans designed in alignment with this framework. In the semi-structured interviews, students stated that engaging in activities supported by GenAI not only made the learning process more effective and interesting but also enhanced their understanding regarding AI. The teacher highlighted that GenAI models encouraged constructivist learning environments, ensured the active involvement of all students, including those in inclusive education, and contributed to AI learning through their engaging structure. Additionally, the teacher highlighted technology’s drawbacks, including encouraging dependence on convenience and potentially providing inaccurate information. The relevant findings of the study, serving as first observations, are expected to provide valuable insights for future research. At this point, it is recommended that further studies be conducted to explore the transformative potential of GenAI in education, especially by employing experimental designs. An additional suggestion, on the other hand, is to disseminate AI throughout the entire curriculum of all subjects within a specific educational level as a cross-curricular theme, as opposed to limiting its teaching to merely a singular, isolated subject area.
AtıfScopus2WoS1OpenAlex2İncele - MakaleAçık Erişim2025Scopus SJRQ3Experiences of Nurse Managers in the 2023 Kahramanmaras, Turkey Earthquakes: A Qualitative Study
Koroglu Kaba, Nagihan; Bal, Betul; Ozturk, Havva
BACKGROUND: Nurse managers play a critical role in disaster response and management; yet research on their experiences in earthquakes remains limited. OBJECTIVE: This study aimed to explore the experiences of nurse managers in the Kahramanmaras, Turkey, earthquakes. METHODS: A phenomenological approach was used to guide this study, exploring the lived experiences of nurse managers who worked during the 2023 earthquakes in Kahramanmaras, Turkey. Purposive sampling identified participants, and data were collected 2-3 months postearthquake, from April to May 2023, via semi-structured interviews conducted via social media. Thematic analysis was applied to analyze the interview data. RESULTS: A total of 11 nurse managers were interviewed for the study. Fifty-five percent were between the ages of 35 and 44, 64% were female and had a bachelor's degree. Five themes emerged from the data: "being unprepared"(predisaster phase), "emotional difficulties,""communication and coordination issues,""resource shortages"(disaster event phase), and "evaluation and professional satisfaction"(postdisaster phase). CONCLUSION: The study found that most nurse managers reported feeling unprepared for the earthquake despite institutional disaster management practices. They struggled with managing their emotions, resource shortages, and communication-coordination issues. These experiences underscore the need for enhanced disaster training and preparedness for nurses. Collaboration among international health organizations, nongovernmental organizations, and governments is essential to develop disaster management plans to optimize nurses as early responders.
AtıfScopus1WoS1OpenAlex1İncele - MakaleYalnız künye2025Scopus SJRQ1New results on the global dynamics for a two-species chemotaxis system with two chemicals and logistic sources
Ayazoglu, Rabil; Ekincioglu, Ismail
This paper deals with the following competitive two-species chemotaxis system with two chemicals with a source term of logistic type ut=Δu−χ1∇⋅(u∇υ)+η1u−μ1u2, υt=Δυ−υ+ω, ωt=Δω−χ2∇⋅(ω∇z)+η2ω−μ2ω2, 0=Δz−z+u, (x,t)∈Ω×(0,T) under homogeneous Neumann boundary conditions [Formula presented] and initial conditions u(x,0)=u0(x), υ(x,0)=υ0(x), ω(x,0)=ω0(x), x∈Ω, in a bounded domain Ω⊂RN (N≥1), where the parameters χ1, μ1, μ2>0 and η1, η2, χ2∈R. It is proved that the corresponding initial-boundary value problem possesses a unique global bounded classical solution if one of the following cases holds: (i)χ2≤0, (ii)χ2>0 as well as μ2 is large enough, which partially improves the results of [25].
AtıfScopus2WoS2OpenAlex2İncele - MakaleAçık Erişim2025Scopus SJRQ1The effect of dietary education on attitudes and behaviors in hemodialysis patients: A randomized trial
Akeren, Zahide; Çakmak, Vahide Semerci; Kalyoncuo, Servet
Background: Hemodialysis patients are at high risk for poor dietary status, primarily due to limited adherence to complex dietary regimens. Inadequate adherence may lead to complications and negatively adversely affect treatment outcomes. Promoting positive dietary attitudes and behavioral change is essential to improve health in this population. Aim: This study aimed to evaluate the impact of a structured dietary education program on dietary attitudes, daily diet intake, and vital signs in hemodialysis patients. Methods: The study was conducted between December 15, 2023, and March 27, 2024, with 34 patients (17 experimental, 17 control) receiving treatment at a public hospital in northeastern Turkey. Data were collected using the Patient Information Form, 24-Hour Diet Recall, Attitude Scale for Dietary Therapy of Hemodialysis Patients (ASDTHP), and Vital Signs Form. The experimental group received structured dietary education in two weekly 40-min sessions. Analyses were performed using BeBIS 9.0 and SPSS 25. Results: The mean age of participants in the experimental group was 59.94 ± 11.80 years; 64.7 % were male, and 64.7 % were primary/middle school graduates. In the experimental group, significant improvements were found in the total ASDTHP score, including the cognition-influenced and diet culture-related behavioral subdimensions (p < 0.05). Additionally, post-intervention analysis showed showed statistically significant reductions in systolic blood pressure, and pulse rate and increase in potassium intake (p < 0.05). Conclusion: Dietary education improved dietary attitudes and positively influenced certain vital signs, including blood pressure, in hemodialysis patients. However, it did not lead to statistically significant changes in other macronutrient and micronutrient intake variables.
AtıfScopus1WoS1OpenAlex1İncele - MakaleAçık Erişim2025Scopus SJRQ1Design and initial experimental verification of a high-speed electrodynamic levitation measurement system utilizing modular magnetic field sources and aluminium rails
Ozturk, U. Kemal; Mollahasanoglu, Hakki; Abdioglu, Murat; Okumus, Halil Ibrahim; Gedikli, Hasan
This work presents design and development of a modular high-speed electrodynamic levitation (EDL) test system that integrates advanced magnetic field configurations and real-time control capabilities at high operational speeds. The system comprises a rotating aluminium rail and interchangeable magnetic field sources, including permanent magnet array (PMA) and high-temperature superconducting (HTS) bulk, allowing for a variety of experimental configurations. The initial experimental results focused on testing the system through PMA–aluminium rail and HTS–aluminium rail configurations. A key innovation of this system is its modular structure, which allows for easy replacement and reconfiguration of magnetic components and rail geometries. The adaptability of the system enables a thorough investigation of how different magnetic field sources influence magnetic force and dynamic stability at high speeds. Furthermore, the system is fully integrated with a programmable logic controller (PLC) and supervisory control and data acquisition (SCADA) interface, enabling precise real-time monitoring, synchronized control and automatic data acquisition. Experimental results demonstrate the system's capability to measure vertical displacement variations and force fluctuations at different speeds, with resonance effects identified around 145 km/h. The levitation forces of 99 N were measured at a gap of 10 mm, with the PMA at a maximum speed of 283 km/h above an aluminium rail, while it was measured as 16 N with HTS at a vertical gap of 9 mm. This flexible test platform provides a critical foundation for determining the force parameters of the real-scale EDL Maglev technologies and advancing their practical application potential in high-speed transportation.
AtıfScopus3WoS3OpenAlex2İncele - MakaleAçık Erişim2025Scopus SJRQ1Transient Plane Wave Transmission Through an N-Layer Multilayer Structure with Bianisotropic Behavior
Cem Hasar, Ugur; Kaya, Yunus; Korkmaz, Huseyin; Iliev, Teodor
An analysis based on electromagnetic reflection and transmission properties of multilayer structures are in general needed to get more information about their electromagnetic responses before their implementation for some specific applications involving absorption, shielding, and diagnosis. Such an analysis could be exercised by either frequency-domain or time-domain. While the former one is based on the steady-state response, the latter one is based on the transient response which thus provides more information about electromagnetic properties of multilayer structures. A procedure relying on a direct theoretical time-domain analysis is preferable to a time-domain analysis based on computational procedures such as the finite-time-difference-domain or the fast Fourier transform. In this study, a series presentation of transient plane wave transmission coefficient of N-layer composite structures involving bianisotropic behavior is derived for the first time in the literature in terms of reduced transmission coefficients (the concept of subregion). The wave matrix approach is applied for the theoretical analysis of the reduced transmission coefficient after application of the concept of subregion. Implementation of this concept to our problem is presented step-by-step to make a clear understanding of its application to bianisotropic multilayer structures. The derived reduced transmission coefficient is validated by different multilayer structures (different layer numbers, different layer lengths, and different polarizations) composed of individual layers whose electromagnetic responses are synthesized by the Lorentz dispersion model. Advantages and limitations of the derived formalism are also presented.
- MakaleYalnız künye2025Scopus SJRQ1Optimized model updating and site-specific seismic assessment of a historical masonry bridge
Tayfur, Bilal
This study comprehensively evaluates an 800-year-old masonry bridge using advanced non-destructive testing techniques, an innovative model update process, and site-specific ground motion analysis. Employing Operational Modal Analysis, Ultrasonic Pulse Velocity, and Schmidt Hammer tests, the research meticulously characterized the structural dynamic properties. The preliminary finite element model was rigorously refined utilizing the Tabu Search optimization algorithm by minimizing discrepancies between numerical and experimental modal parameters. Site-specific earthquake records, carefully selected and prepared in accordance with the Turkish Building Earthquake Code, were applied to conduct detailed time-history analyses across 11 distinct ground motion records. Despite experiencing stresses approaching critical thresholds, the bridge demonstrated remarkable structural integrity. While the findings indicate the bridge’s structural soundness under current seismic hazard analysis criteria, the results notably emphasize that the frequency content similarities between the structure and ground motion are more critical for seismic performance assessment than peak ground acceleration (PGA) values, underscoring the importance of continuous monitoring given the region’s complex tectonic characteristics.
AtıfScopus5WoS3OpenAlex4İncele - MakaleAçık Erişim2025Scopus SJRQ2Quantification of phenolics by LC-MS/MS of monofloral and polyfloral Honey: Evaluation of the greenness of the method with MoGAPI and MoGSA
Gerçek, Yusuf Can; Baştürk, Fatma Nur; Özkök, Aslı; Cevahir Öz, Gül; Ecem Bayram, Nesrin
This study evaluated the physicochemical properties, total phenolic content (TPC), total flavonoid content (TFC), antioxidant activity, proanthocyanidin content, and polyphenolic profiles of monofloral and multifloral honey samples produced in Türkiye. In addition, the greenness of the analytical method was assessed using two different evaluation tools: MoGSA and MoGAPI. The TPC and TFC values for multifloral honeys ranged from 0.18–0.65 mg GAE/g and 0.01–0.09 mg QE/g, respectively, whereas for monofloral honeys, these values ranged from 0.16–0.98 mg GAE/g and 0.01–0.37 mg QE/g. The highest CUPRAC and DPPH values were observed in Erica spp. honey, consistent with its TFC and total individual polyphenolic compound results. Notably, the Erica spp. honey sample exhibited a significantly higher gallic acid content (26.13 µg/g) compared to the other samples. These findings suggest that Erica spp. honey characterized by its high TPC, antioxidant activity, and distinctive polyphenolic profile, may serve as a notable dietary source of antioxidants. Additionally, the MoGAPI and MoGSA scores of the method were determined to be 84 and 91.67, respectively, demonstrating its high environmental sustainability.
AtıfScopus4WoS4OpenAlex3İncele - MakaleAçık Erişim2025Scopus SJRQ3Investigation of cytochrome B mutations, and UCP2 and STC1 gene expressions in patients with bipolar disorder
Uzunçakmak, Sevgi Karabulut; Özcan, Halil; Dirican, Ebubekir
Objective The aim herein was to investigate mitochondrial cytochrome B (MT-CYB) mutations in individuals with bipolar disorder. Stanniocalcin-1 (STC1) and uncoupling protein 2 (UCP2) mRNA expressions and their relationship with clinical data and each other were also investigated. Method The blood samples of 100 individuals were included in this study. Real-time PCR was used to evaluate mRNA expressions of STC1 and UCP2. Genetic alterations were investigated via Sanger DNA sequencing. An in silico analysis was performed to reveal the phenotypic effects of MT-CYB mutations. Results In the MT-CYB gene of the bipolar disorder patients, the most seen mutations were the T194A A>G mutation at position 1532, G deletion at position 15498, and C>A L236I mutation at position 15452. Most of the mutations appeared to be neutral or benign. The UCP2 and STC1 mRNA expression levels were significantly higher in the patients than in the healthy controls (P = 0.0124 and P < 0.0001, respectively). The area under the curve values of the receiver operating characteristic curve analysis for UCP2 and STC1 were 0.6631 (P = 0.0123) and 0.8059 (P < 0.0001), respectively. No significant relationship was observed between the gene expressions and the routine laboratory findings. There was a positive correlation between the UCP2 and STC1 mRNA expressions in the bipolar disorder patients (r = 0.03559, P = 0.0306). Conclusion Expression of UCP2 and STC1 may be important parameters in bipolar disorder. MT-CYB mutations may be related to gene expressions. Comprehensive studies on bipolar disorder will help better understand UCP2 and STC1 gene functions.
- MakaleYalnız künye2025Scopus SJRQ3Biosynthesis of alternan-stabilized selenium nanoparticles: A study on characterization and applications for antibacterial and antifungal purposes
ElObeid, Tahra; Yilmaz, Mustafa Tahsin; Ispirli, Humeyra; Sagdic, Osman; Taylan, Osman; Basahel, Abdulrahman; Karaboga, Dervis; Durak, Muhammed Zeki; Dertli, Enes
In this study, the alternan/selenium nanoparticles (Alt/SeNPs) were characterized with respect to their formation, morphology, size, selenium distribution, molecular, crystallographic, and thermal properties using UV–Vis spectroscopy, SEM, TEM, EDAX, FTIR, XRD, DSC and TGA measurements. UV–VIS measurements confirmed the synthesis of nanoparticles by observing a maximum surface plasmon resonance peak at 212 nm. In this study, alternan contributed to stabilizing the dispersion of SeNPs, resulting in a cluster of spherical and well-dispersed nanoparticles ranging in size from 50 to 90 nanometers. Nanoparticles were found to be highly thermally stable and in a nanocrystalline structure. The ABTS and CUPRAC radical scavenging activities of Alt/SeNPs were remarkable (95% and 78% at 4 and 6 mg/mL levels of Alt/SeNPs, respectively). Alt/SeNPs had also good inhibitory activities (3.5–4.0 and 4–15 mm of inhibition zone levels at 5 mg/mL level of Alt/against foodborne pathogenic bacteria and fungi, respectively).
AtıfScopus1WoS2OpenAlex2İncele - MakaleAçık Erişim2025Scopus SJRQ2Tri-method analysis of contact mechanics in orthotropic-isotropic materials
Öner, Erdal; Oktay, Mine Gül; Uzun Yaylacı, Ecren; Yaylacı, Murat; Mirzaloğlu, İrem
This study examines the contact mechanics of a homogeneous orthotropic layer resting on a homogeneous isotropic half-space without being bonded, subjected to loading by a rigid cylindrical punch. The effect of the orthotropic layer’s body force has been taken into account in the study. The study is conducted in three phases. In the first phase, the contact problem is analytically tackled using advanced methods such as elasticity theory, integral transform techniques, and Gauss–Chebyshev integration. The second phase utilizes finite element analysis through ANSYS software, accurately modeling the system. In the final phase, an artificial neural network is employed, allowing the system to learn and recognize intricate patterns in the data. The standout feature of this study is its thorough comparison of these three distinct methodologies, offering a comprehensive understanding of the contact mechanics between isotropic and orthotropic materials. The results reveal key insights into contact length, maximum contact stress, critical separation load, and separation distance, all as functions of critical dimensionless parameters. This study is significant in today’s advancing field of contact mechanics as it not only explores the combined impact of body forces and the interaction between orthotropic and isotropic materials but also uniquely compares the results using three distinct methods, offering comprehensive insights that address both theoretical and practical challenges.
AtıfScopus27WoS27OpenAlex22İncele - MakaleAçık Erişim2025Scopus SJRQ1Difficulties in Emotion Regulation as a Mediator and Gender as a Moderator in the Relationship Between Problematic Digital Gaming and Life Satisfaction Among Adolescents
Yayla, İbrahim Erdoğan; Dombak, Kübra; Diril, Sena; Düşünceli, Betül; Çelik, Eyüp; Yildirim, Murat
Background: Problematic digital gaming has emerged as a significant behavioral concern among adolescents, with potential implications for well-being. Understanding the mechanisms through which problematic digital gaming affects life satisfaction and how these mechanisms may differ by gender is important for targeted interventions. Aims: This study aimed to investigate the mediating role of difficulties in emotion regulation and the moderating role of gender in the relationship between problematic digital gaming and life satisfaction among adolescents. Method: The sample consisted of 458 Turkish adolescents (232 females, 50.7%) aged between 14 and 18 years (M = 16.27). Participants completed the Game Addiction Scale for Adolescents—Short Form, the Life Satisfaction Scale, and the Difficulties in Emotion Regulation Scale—8. Results: Problematic digital gaming was found to have a significant negative association with life satisfaction. Difficulties in emotion regulation significantly mediated the relationship between problematic digital gaming and life satisfaction. Furthermore, gender moderated this mediation effect, with difficulties in emotion regulation being more pronounced among males than females. Conclusions: The findings highlight the importance of emotional regulation in understanding the negative impact of problematic digital gaming on adolescents’ life satisfaction, particularly among males. These results suggest the need for gender-sensitive approaches in interventions aimed at improving emotion regulation skills and reducing problematic gaming behavior.
AtıfScopus6WoS7OpenAlex9İncele - MakaleAçık Erişim2025Scopus SJRQ2Optimization of Phenolic Compound Extraction from Bee Products via Solvent Systems and PCA Integration
Birinci, Ceren; Kara, Yakup; Gıdık, Betül; Kolaylı, Sevgi; Can, Zehra
To achieve a highly selective and sensitive analysis of phenolic compounds in bee products (honey, bee bread, and propolis), a simultaneous quantification of 25 phenolic compounds was performed using high-performance liquid chromatography coupled with a diode array detector. In the study, various solvents were utilized to enhance the phenolic profile of bee products, including pH 2 and 7 ultra-pure water, diethyl ether, and ethyl acetate. These included non-liquid–liquid extraction, pH 2 with 10 mL of pure water and 20 mL of diethyl ether; pH 2 with 10 mL of pure water and 20 mL of ethyl acetate; pH 2 with 10 mL of pure water, 10 mL of diethyl ether, and 10 mL of ethyl acetate; and pH 7 with 10 mL of pure water, 10 mL of diethyl ether, and 10 mL of ethyl acetate. Additionally, the integration of phenolic compounds identified through the enrichment method was pursued using principal component analysis (PCA). The extraction yields and recovery rates of phenolic compounds can be significantly improved by combining and integrating different extraction techniques. Our results demonstrated that using different solvent combinations significantly improved both the yield and diversity of phenolic compounds extracted from the complex matrices of bee products.
AtıfScopus2WoS2OpenAlex1İncele - MakaleAçık Erişim2025Scopus SJRQ4Examining the Relationship Between Boxers' Sports Achievement Goals and Sports Anxiety Levels
Akyuz, Hayri; Zeze, Bahar
Purpose. The aim of this study is to examine the relationship between boxers' goal of success in sports and their levels of sports anxiety and to determine whether their goal of success in sports and their levels of sports anxiety differ according to demographic variables. Material & Methods. The research was conducted within the framework of descriptive and relational screening model methods. The population of the research consists of boxers who participated in the Turkish Individual Boxing Championship held in Bayburt province between June 28, 2025 and July 6, 2025. The research sample consists of n: 370 people selected from this population using simple random sampling method. Data collection tools included the "Personal Information Form", the "Sports Achievement Goal Scale (SAGS)", and the "Sports Anxiety Scale-2 (SAS)." Data were analyzed using the SPSS 27.0 program. The normality of the data distribution was assessed using kurtosis and skewness tests, concluding that the data followed a normal distribution. Furthermore, reliability analysis of the scale sub-dimensions and total scores indicated that both were reliable. Descriptive statistics included frequency, mean, and standard deviation; t-tests and ANOVA were used to examine differences between variables; and Pearson Correlation Test was used to analyze relationships between variables. Tukey test was applied for multiple comparisons. Significance value (p<0.05) was considered in the data analysis. Results. According to the t-test results, significant differences were found between the boxers' gender variable and the SAGS total scores and sub-dimensions in favor of male boxers (p<0.05). However, no significant difference was found between the international degree status variable and the scale total scores and sub-dimensions (p>0.05). On the other hand, significant differences were found between the boxers' sport category variable and the SAGS total scores and sub-dimensions in the ANOVA test results (p<0.05). Furthermore, the correlation test results revealed no correlation between the participants' age and sport age variables and the scale sub-dimensions and total scores (p>0.05). In addition, a low-level, negative, and significant correlation was found between the weight class variable and the total scores and subdimensions of the SAGS (p<0.05). Moreover, a low-level, positive, and significant correlation was found between the participants' weekly sport activity duration variable and the "somatic" sub-dimension of the SAS (p<0.05). Conclusions. Finally, low, moderate, and high-level positive correlations were found between the scale sub-dimensions and total scores. In conclusion, it can be said that as boxers' sports anxiety levels increase, their achievement goals in sports also increase. The findings indicate that boxers’ achievement goal orientations are important psychological determinants of competitive anxiety levels. These results provide important practical implications for training planning, psychological support practices, and particularly for rehabilitation-oriented interventions aimed at anxiety regulation. Taking achievement goal orientations into account may contribute to reducing injury risk, supporting recovery processes, and promoting long-term athlete health.
- MakaleAçık Erişim2025Scopus SJRQ3Perceived social support and school engagement in sports science students: The moderated mediation of school alienation and social media addiction
Esentürk, Oğuz Kaan; Seçer, Emrah; Yarimkaya, Erkan; İlhan, Ekrem Levent
Introduction and Purpose: This study investigated how sports science university students perceive social support (PSS), its influence on their academic engagement, and the mechanisms that mediate this relationship. Methodology: A total of 466 students (316 males, 150 females) from the Faculty of Sports Sciences participated in the study, which used a relational screening model. Data were collected using the Multidimensional Perceived Social Support Scale, the University Students School Engagement Scale, the School Alienation Scale, and the Social Media Addiction Scale. The measurement model was validated through confirmatory factor analysis, followed by correlation testing and regression analysis using the Bootstrap method to evaluate the study's hypotheses. Results: The analysis identified a positive correlation between PSS and school engagement (SE) (r = 0.45, p < 0.001). In contrast, PSS showed negative correlations with both school alienation (SA) (r =-0.209, p < 0.01) and social media addiction (SMA) (r = −0.113, p < 0.01) (Hypothesis I). Regression analysis using the Bootstrap method revealed a significant indirect effect of PSS on SE via SA (Hypothesis II) [β = 0.181, p < 0.001, 95% Confıdence Interval (CI) = (0.003, 0.039)]. Additionally, SMA moderated the indirect effect of PSS on SE via SA (Hypothesis III) [Situational mediator index = −0.018, Boot SE = 0.001, Boot 95% CI = (−0.003, −0.0001)]. The indirect effect was stronger for individuals with low SMA [Indirect effect = 0.034, Boot SE = 0.182, Boot 95% CI = (0.007, 0.078)] compared to those with high SMA [Indirect effect = 0.018, Boot SE = 0.009, Boot 95% CI = (0.005, 0.0416)]. Conclusion: The findings support all three hypotheses in the study's theoretical framework, confirming the proposed relationships and underlying mechanisms.
AtıfScopus1İncele - MakaleYayıncıda açık erişim2025Scopus SJRQ1Breaking the silence on late-life depression: uncovering the drivers of help-seeking in Türkiye’s ageing population
Ercan, Uğur; Apaydın, Emine; Alkan, Ömer
Background: Due to the prevalence of physical health issues among older adults, depression remains a significant health concern, which is often overlooked. Understanding the factors influencing the likelihood of seeking psychological support plays an important role in effectively managing depression in later life, where psychological support has a crucial role. This study aims to examine the factors associated with the likelihood of receiving psychological support among individuals aged 60 years and older experiencing depression in Türkiye. Methods: This study used microdata from the Türkiye Health Surveys conducted by Turkish Statistical Institute in 2016, 2019, and 2022. Gompit, binary logistic regression, and CHAID analyses were used to identify variables associated with psychological support-seeking behavior among older adults with depression. Results: The analysis revealed that general health status, illness status, gender, education level, and difficulty in healthcare payment significantly influenced the likelihood of receiving psychological support among older adults with depression. Conclusion: The results achieved in this study indicate that among older adults experiencing depression, women, those with higher educational levels, and those with existing illnesses are more likely to seek psychological support. Based on these results, it is recommended to develop educational programs to raise societal awareness about the importance of psychological support and to inform health policies accordingly.
AtıfScopus4WoS4OpenAlex4İncele - MakaleAçık Erişim2025Scopus SJRQ2Enzyme inhibitory, antioxidant, antimicrobial activities, and phenolic profiles of the methanol extract of Gelasia sericea an endemic species
AYGÜL, İmdat; AKMEŞE, Osman; SEFALI, Abdurrahman; BALTACI, Cemalettin; ÖZ, Mehmet; FIDAN, Muhammed Said
This study aimed to investigate, for the first time, the phytochemical composition, antioxidant, antimicrobial, and enzyme inhibitory properties of the methanolic extract of Gelasia sericea (Aucher ex DC.) Zaika, Sukhor. & N.Kilian. The extract demonstrated a moderate yield (6.55 g/100 g dry plant material) and was found to be rich in phenolic acids, particularly ferulic acid (17182.97 μg g-1), followed by caffeic acid, protocatechuic acid, and p-coumaric acid. Antioxidant analyses revealed high total phenolic (388.86 mg GA eq./100 g), total flavonoid (74.03 mg QE eq./100 g), and total antioxidant capacity (503.33 mg AA eq./100 g). The extract exhibited remarkable ABTS radical scavenging activity (95.99%, IC50 = 37.59 mg ml-1) and considerable ferric-ion reducing power (974.78 mg FeSO4 eq./100 g). Antimicrobial assays indicated moderate inhibitory effects, with stronger activity against Gram-positive bacteria (Staphylococcus aureus, Enterococcus faecalis) and the yeast Candida albicans, whereas Gram-negative bacteria were less susceptible. The extract’s MIC values ranged between 0.20-3.25 mg ml-1, and MLC values between 0.41-6.50 mg ml-1, which were higher than those of standard antibiotics. Enzyme inhibition assays revealed moderate activity against carbonic anhydrase II (IC50 = 0.0136 µg ml-1) and weak inhibition of cholinesterases and α-glucosidase, while α-amylase inhibition was relatively more pronounced (IC50 = 13350.00 µg ml-1). Overall, these findings highlight G. sericea as a valuable natural source of phenolic acids and antioxidants, with promising potential for applications in functional foods, nutraceuticals, and phytopharmaceuticals. However, the relatively limited antimicrobial and enzyme inhibitory activities suggest the need for further studies on bioavailability, in vivo efficacy, and compound isolation to optimize its practical applications.
