WoS İndeksli Yayınlar Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12514/3595

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Unsafe Schools: An Examination of High School Females’ Experiences with School Safety
(Routledge Journals, Taylor & Francis Ltd, 2026) Kartal, Osman; Karadaş, Halil
This study aims to identify the safety issues faced by female high school students in Türkiye, both at school and on their commutes to and from school. The study group consists of 36 female students attending high school in southeastern Türkiye who experience safety concerns on their way to school. In the research, phenomenology pattern, one of the qualitative research methods, was used. Participants were selected by criterion sampling method. According to the research results, it was determined that the students experienced safety problems inside the school, on the way to school and due to personal reasons. Among the safety problems experienced within the school, the most prominent ones were determined as fighting/violence, secret photo taking, lying, slander, bullying and foreign individuals. Schol road safety problems are divided into four subcategories: pedestrian, service, public transportation and personal reason. Research findings indicate that girls do not feel sufficiently safe on their way to school. Based on the research results, it has been concluded that the route to school for girls needs to be made safer. Research findings indicate that it is urgent and highly important to make school routes and school route paths safe enough for children to feel secure.
The Association Between Technology Use and Aggression in Turkish Adolescents: A Cross-Sectional Study
(Wiley, 2026) Butun, Ahmet
Introduction The widespread integration of digital technologies into adolescents' daily lives has raised concerns about potential behavioral correlates, including aggression. Although prior research suggests a relationship between technology use and aggressive behavior, results are mixed and often context-dependent. This study aimed to examine the association between information technology use and aggression among Turkish adolescents. Methods A descriptive cross-sectional study was conducted with 841 adolescents aged 11-14 years recruited from three public secondary schools in southeastern Turkey between February 3, 2025, and February 14, 2025. Data were collected using a sociodemographic questionnaire, the Information Technologies Usage Scale, and the Aggression Scale. Pearson correlation analyses and hierarchical multiple linear regression models were performed to examine associations between technology use and aggression, both before and after controlling for demographic and familial variables. Results Technology use was positively associated with aggression (r = 0.296, p < 0.001). In regression analyses, information technology use remained a significant predictor of aggression after adjustment for covariates (beta = 0.235, p < 0.001), explaining a small proportion of variance. Among technology sub-dimensions, digital game playing and use of technological devices and applications were significantly associated with higher aggression scores, whereas virtual life preference was not. Longer daily technology use was also associated with higher aggression levels. Conclusion Higher levels of technology engagement, particularly digital gaming and device use, were associated with increased aggression scores among adolescents, although the magnitude of these associations was small. Given the cross-sectional design, causal inferences cannot be drawn. The results highlight the importance of considering both the type and duration of technology use in adolescent behavioral research and underscore the need for longitudinal studies to clarify temporal relationships and underlying mechanisms.
The Relationship Between Breast Cancer Fear and Fatalism Perceptions of Women and Their Breast Cancer Early Detection Behaviours
(Wiley, 2026) Olgac Ak, Kadriye; Yigitalp, Gulhan
Introduction Breast cancer is the most common cancer in women, and early detection is vital for reducing mortality. Psychological and cultural factors like fear and fatalism can limit screening participation. Objectives This study examined how women's fear and fatalism levels affect their early detection behaviours and the relationships among these variables. Methods A descriptive and cross-sectional design was used. The study was conducted between 1 November 2024 and 25 February 2025, with 433 women registered at Family Health Centres. Data were collected using the 'Personal Information Form', 'Breast Cancer Fear Scale' and 'Breast Cancer Fatalism Scale'. Analyses included descriptive statistics, t-test, ANOVA, post hoc (Tukey, LSD), Pearson correlation and linear regression tests. Results Among the participants, 52.4% performed breast self-examination, 25.4% had a clinical breast examination and 26.2% of women over 40 had a mammogram. Age, education, marital and employment status, having children and willingness to learn about breast cancer significantly affected fatalism (p < 0.05). Employment status, having children and willingness to learn significantly affected fear levels (p < 0.05). Early detection practices were not significantly associated with fear or fatalism scores (p > 0.05). Regression analysis revealed that fatalism (B = 0.308, p = 0.036) and willingness to learn (B = 3.343, p < 0.001) significantly predicted breast cancer fear. Conclusion Enhancing knowledge and health literacy, along with improving access to screening, is essential for increasing screening behaviours. Regression analysis revealed that fatalism significantly predicted breast cancer fear. Increasing fatalistic beliefs may intensify fear responses and potentially contribute to avoidance of early detection behaviours. Therefore, addressing fatalistic perceptions may help reduce fear and promote screening participation. Health professionals should actively guide women, with a focus on those experiencing high fear and fatalism, as reducing these factors can support greater participation in early breast cancer detection. Health professionals should actively guide women, with a focus on those experiencing high fear and fatalism, as reducing these factors can support greater participation in early breast cancer detection.
The Mediating Role of Academic Procrastination and Perfectionism in the Relationship Between Trait-State Anxiety and Self-Handicapping Among University Students
(SAGE Publications Inc, 2026) Ergün, Naif; Doğan, Fatma Zehra
This study examines the mediating roles of academic procrastination and academic perfectionism in the relationship between trait anxiety and self-handicapping among university students, while controlling for state anxiety as a covariate. The research used a cross-sectional design with 400 undergraduates from 38 universities. Data were collected through the Self-Handicapping Scale, State-Trait Anxiety Inventory, Academic Procrastination Scale, and Academic Perfectionism Scale. Mediation analyses were performed using PROCESS Macro (Model 4) to test a parallel mediation framework. Findings revealed a significant positive association between trait anxiety and self-handicapping. The results demonstrated that academic procrastination and academic perfectionism independently and significantly mediated the link between trait anxiety and self-handicapping behaviours. Students with higher trait anxiety exhibited greater tendencies toward both procrastination and perfectionism, which in turn were associated with increased self-handicapping behaviours. The proposed model accounted for 55% of the variance in self-handicapping and was statistically significant overall. These results underscore that procrastination and perfectionism operate as distinct, concurrent self-regulatory pathways through which trait anxiety contributes to self-sabotaging behaviours. The findings suggest that psychological interventions should simultaneously target both avoidant behavioural patterns and maladaptive cognitive standards to enhance academic functioning in anxious students.
Sustainable Synthesis and Characterization of High-Surface-Area Activated Carbons from Walnut and Pistachio Shell Wastes via Chemical Activation
(Nature Portfolio, 2026) Onal, Yunus; Kuyucu, Ali Ender; Selcuk, Ahmet; Erol, Kadir; Alacabey, Ihsan
Valorization of agricultural residues into high-performance porous carbons is an effective route to sustainable adsorbents. Here, walnut green outer shell and pistachio pink outer shell were converted into activated carbons via chemical activation using KOH (1:1, 1:2, 1:3) and ZnCl2 (1:1). Without any pretreatment, precursors were carbonized at 500 degrees C (1 h, nitrogen atmosphere), followed by activation at 800 degrees C (KOH, 1 h) or 500 degrees C (ZnCl2, 1 h). Textural analyses revealed a strong dependence on both precursor type and activating agent. Walnut-shell carbons reached exceptionally high surface areas of 1028-2347 m & sup2; g(-)& sup1;, with the maximum obtained for KOH (1:3), whereas pistachio-shell carbons achieved 788-1324 m & sup2; g(-)& sup1; under the same KOH series. In contrast, ZnCl2 activation produced markedly lower areas (445-750 m & sup2; g(-)& sup1;) and grinding caused only minor changes. FTIR/XRD/SEM/Elemental analyses collectively supported the formation of defect-rich, turbostratic carbon frameworks with well-developed porous morphologies, highlighting walnut shell as a particularly promising precursor for sustainable, high-surface-area activated carbons suitable for adsorption-driven environmental applications.
Psychological Predictors of Sustainable and Healthy Eating Behaviors among University Students in Southeastern Türkiye: A Cross-Sectional Study
(Springer Heidelberg, 2026) Akçalı, Çağlar; Ülger, Taha Gökmen; Özyurt, Mehmet
Aim This study aims to examine the relationship between sustainable and healthy eating behaviors in university students and their mindful eating, body image, self-esteem, and physical activity, and to determine the psychological and behavioral predictors of these behaviors. Subject and methods This cross-sectional and descriptive study was conducted at Mardin Artuklu University in southeastern Türkiye with 1055 university students. Data were collected using the Sustainable and Healthy Eating Behavior Scale, the Mindful Eating Scale, the Body Image Scale, the Rosenberg Self-Esteem Scale, and the International Physical Activity Questionnaire. Statistical analyses included correlation, multiple linear regression, mediation, and moderation analyses. Results Sustainable and healthy eating behaviors showed positive correlations with mindful eating (r = 0.285; p < 0.001) and physical activity level (r = 0.074; p = 0.012), and negative correlations with body image (r = -0.344; p < 0.001) and low self-esteem (r = -0.131; p < 0.001). In the multiple regression analysis, mindful eating (B = 6.958; p < 0.001) was identified as the strongest positive predictor, while negative body image (B = -0.496; p < 0.001) was one of the strongest negative predictors. Mediation analyses revealed that the relationship between self-esteem and sustainable and healthy eating behaviors was indirectly mediated by mindful eating (beta = -1.686; p < 0.001) and body image (beta = -3.174; p < 0.001). Conclusion The findings reveal that sustainable and healthy eating behaviors in university students are closely related not only to demographic and lifestyle factors but also to psychological processes such as mindful eating, body image, and self-esteem
Protective Role of Hesperidin Against Deltamethrin-Induced Cardiovascular Structural Damage: Involvement of Caspase-3-Driven Apoptosis and Fibrosis Suppression in Rats
(MDPI, 2026) Gültekin, Burcu; Canbaz, Halime Tuba; Savaş, Hasan Basri; Cüce, Gökhan; Kalkan, Sabiha Serpil
Background and Objectives: Deltamethrin (DLM), a widely used pyrethroid insecticide, has been linked to cardiotoxic effects in non-target organisms. Hesperidin (HSP), a dietary bioflavonoid with antioxidant and cardioprotective properties, may counteract these effects. This study investigated the protective role of HSP against DLM-induced cardiotoxicity in male Wistar Albino rats. Materials and Methods: Thirty-two rats were divided into four groups: Control, DLM, DLM + HSP 100, and DLM + HSP 300. At the end of the experiment, serum ischemia-modified albumin (IMA), glucose, cholesterol, triglyceride, and HDL levels were analyzed. Cardiac and aortic tissues were assessed histopathologically. Masson's trichrome staining evaluated cardiac fibrosis, Verhoeff-Van Gieson staining examined elastin and tunica media thickness, and caspase-3 expression in the aorta was determined immunohistochemically. Results: DLM administration caused cardiac and aortic damage by increasing IMA, glucose, caspase 3 activities, and tunica media thickness. HSP treatment, particularly at 300 mg/kg, reduced IMA (0.28 +/- 0.02 vs. 0.60 +/- 0.03 AU), glucose (141.12 +/- 11.70 vs. 207.06 +/- 9.85 mg/dL), cardiac histopathological damage score (2.17 +/- 0.41 vs. 9.02 +/- 1.35), tunica media thickness (95.29 +/- 4.29 vs. 114.95 +/- 17.20 & micro;m), and caspase-3 expression score (0.62 +/- 0.74 vs. 2.87 +/- 0.35). All results showed significance at the p < 0.05 level. Conclusions: HSP exhibited dose-dependent protective effects against DLM-induced oxidative stress, apoptosis, and cardiovascular injury, suggesting its potential as a therapeutic candidate against pesticide-related cardiotoxicity.
Papaver Rhoeas Extract as a Renewable Plant-Derived Corrosion Inhibitor for Mild Steel Protection in HCl Solution
(Elsevier, 2026) Baran, Mehmet Firat; Yildiz, Resit; Arslanhan, Selim; Solmaz, Ramazan
Background: Corrosion results in material losses, safety issues, and adverse effects on human health and the environment. Therefore, preventing corrosion is a critical necessity. Although many methods and corrosion inhibitors have been employed to mitigate these negative effects, extracts of natural products have attracted increasing attention in recent years due to their natural origin, cost-effectiveness, and minimal adverse impacts on human health and the environment. Methods: The effect of Papaver rhoeas extract (PR), a natural plant-derived inhibitor, on mild steel (MS) corrosion in 1 M HCl solution was investigated at various extract concentrations and temperatures using various electrochemical methods. The steel surface after exposing to corrosive medium was characterized by SEM, AFM, EDX, XPS and contact angle measurements. Quantum chemical calculations were performed to support the experimental data. Significant findings: It was reported that the inhibition efficiency (eta%) of RP increased with increasing inhibitor concentration, reaching 98% at 1000 ppm. Notably, after an extended 120 h of exposure, the eta% peaked to 99.3%. The PR extract function as a mixed-type corrosion inhibitor. The value of Delta G degrees ads was-27.34 kJ mol-1, which indicated combinations of both physical and chemical interactions between the metal surface and extract molecules.
Middle Voice in Kurmanji and Zazaki
(Fundacion Univ Juan Castellanos, 2026) Bingol, Ibrahim; Altinkilic, Umran
Traditional descriptions of voice in Kurmanji and Zazaki often foreground an active-passive opposition, and some Zazaki-oriented descriptive traditions additionally claim that Zazaki has two passive types: a canonical passive formed with the auxiliary ameyene 'come' plus an infinitive, and a second suffixal/added passive. Building on a structural diagnostic- the optional licensing of an overt agent phrase-this article argues that the alleged second passive is not passive at all but an event-centered middle construction: it can be semantically passive-like yet systematically resists agent-phrase insertion. We show that true passives are parallel in Kurmanji and Zazaki (hatin/ameyene + infinitive) and that the extra passive arises when dialectally constrained datasets (especially Southern/Cermug Za zaki, where ameyene-passives are reported to be rare) conflate passives with middles. In contrast, Northern Var to Zazaki patterns closely with Kurmanji, favoring the auxiliary-passive strategy. Finally, we argue that middle alternations are constrained by verb class: only a subset of ambitransitives behaves as labile/ergative predicates that readily form middles, whereas highly general transitives such as kerdene 'do' resist the middle alternation but passivize straightforwardly. Using parallel Kurmanji-Zazaki paradigms, the paper provides a compact toolkit for separating passive from middle and offers a dialect-sensitive reanalysis of Todd [1] and Pamukçu [2].
Lessons from Jerusalem and Palestine
(Edinburgh Univ Press, 2026) Abu Zayd, Wasfi Ashour
Impact of Different Cooking Techniques on the Fatty Acid Composition in Phospholipid and Triacylglycerol of Leer (Lichia Amia) Fillets
(Consejo Superior Investigaciones Cientificas-CSIC, 2025) Akgul, N.; Kacar, S.; Bashan, M.
The fatty acid (FA) composition of leer fish (Lichia amia) fillets prepared using different cooking techniques was examined in this study. The phospholipid (PL) component of the fillets fried in corn and hazelnut oil contained reduced levels of PUFAs (polyunsaturated fatty acids) and SFAs (saturated fatty acids). Total PUFA, Sigma n6 PUFA and linoleic acid (18:2) were detected at significantly higher levels in the triacylglycerol (TAG) fractions of fillets fried in sunflower oil and corn oil than in raw samples fried in hazelnut oil and olive oil. In comparison to raw fillets, the TAG fraction had higher rates of DHA (docosahexaenoic acid), n3 PUFA, n3/n6 in oven-baked fillets; 16:0 (palmitic acid), SFA ratios in grilling; and 18:2, PUFA, n6 PUFA values in microwave heating. When compared to raw fillets, it was shown that the PUFAs in the PL fraction increased when cooked in an oven or grill but did not significantly change when fried in sunflower and olive oil. In comparison to the raw fillets, n3 PUFAs increased in the TAG fraction using the oven and microwave techniques. Using frying methods decreased n3 fatty acids in both PL and TAG fractions. Cooking methods other than frying significantly altered fatty acid contents.
Hypernatremic Dehydration in Breastfed Neonates: Clinical Findings and Risk Factors
(SAGE Publications Inc, 2026) Orhan, Ozhan; Durukan Tosun, Mehtap; Orbay, Rukiye; Yilmaz, Emre Baran; Talay, Mehmet Nur
Background: Neonatal hypernatremic dehydration (NHD) is a dangerous disease that can lead to hospitalization of the infant, serious complications, and death. Despite the significant advantages of breast milk for both the mother and the baby, some neonates who are exclusively breastfed experience malnutrition in the first few days.Research Aim: This study aims to evaluate the clinical presentations, maternal and neonatal risk factors, and preventive strategies for hypernatremic dehydration in term and late-preterm infants who were exclusively breastfed.Methods: In this study, neonates who were hospitalised with the diagnosis of hypernatremic dehydration in the Neonatal Intensive Care Unit of Mardin Training and Research Hospital between 2019 and 2023, who were exclusively breastfed after birth, whose gestational age was 35 weeks and above, and whose serum sodium concentration was measured >= 150 mEq/L were retrospectively evaluated. Statistical analyses were performed using SPSS 25.0 software.Results: A total of 141 newborns diagnosed with hypernatremic dehydration were included in the study. The mean age at presentation was 4 (1-20) days, and 53% of the patients were male. The mean birth weight was 3248.16 +/- 491.05 g, while the mean admission weight was 2885.67 +/- 477.61 g, indicating a significant weight loss of 11.33 +/- 7.46%. The mean maternal age was 28.95 +/- 6.22 years, and 41% of deliveries were by caesarean section. Transcranial ultrasonography was normal in 97.2% of the patients, while 2.8% had signs of haemorrhage or oedema. The most common presenting complaint was malnutrition (46.8%), followed by jaundice (41.1%).Conclusion: Awareness of NHD among both mothers and healthcare personnel is the most important factor. Calling babies for early postnatal check-ups, close monitoring of neonatal weight loss, and encouraging successful breastfeeding techniques may reduce hospitalization rates.
From Challenge to Opportunity: Survival Strategies of Syrian Migrant Entrepreneurs in Türkiye
(Emerald Group Publishing Ltd, 2026) Alsaeegh, Esraa; Altun, İslam
PurposeThis study aims to examine the structural and cultural challenges faced by Syrian migrant entrepreneurs in Türkiye and to identify the survival and adaptation strategies they use to achieve business sustainability. Grounded in resource-based theory (RBT) and the entrepreneurial resilience framework, the study seeks to explain how migrant entrepreneurs transform intangible resources into sustainable competitive advantages under the uncertainty.Design/methodology/approachThe study adopts a qualitative research design based on semi-structured, in-depth interviews with 11 purposively selected Syrian migrant entrepreneurs operating in different sectors in Gaziantep. Data were collected between June and October 2024 and analyzed using a thematic analysis approach. The resilience framework guided the deductive structure, while emergent themes were identified inductively from participants' lived experiences.FindingsSyrian migrant entrepreneurs face language barriers, limited financial access, institutional complexities, weak market knowledge and marketing constraints. To overcome these challenges, they mobilize intangible resources such as multilingual skills, social capital, cross-cultural knowledge, resilience and experiential learning. Key strategies include investing in language acquisition, collaborating with local actors, leveraging informal financial networks, seeking professional support, adapting marketing practices and using digital platforms. These practices reflect dynamic resource recombination and capability development, enabling entrepreneurs to transform constraints into resilience and sustainable competitive advantage in the Turkish market.Research limitations/implicationsThe sample size is limited to just 11 Syrian entrepreneurs operating in Gaziantep province. This reduces the generalisability of the findings. Furthermore, limiting the study to forcibly displaced Syrians excludes the experiences of migrant groups who have migrated for economic reasons.Practical implicationsThis study highlights the strategies immigrant entrepreneurs should prioritize for success, such as learning the language, building social capital and financing diversity. In addition, it recommends that local governments and state institutions develop support mechanisms for immigrant entrepreneurs, such as microcredit, mentoring, language courses and simplified bureaucracy.Originality/valueThis study contributes to the migrant entrepreneurship literature by moving beyond descriptive accounts of challenges and offering a theory-driven explanation grounded in RBT. By contextualizing RBT within forced migration and institutional volatility, the research demonstrates how competitive advantage emerges not from resource abundance but from strategic resource recombination under uncertainty. The study provides a novel empirical contribution by focusing on Gaziantep, a strategically significant yet underexplored context in Türkiye.
GIS and AHP-Based Agricultural Land-Use Suitability Analysis in Semi-Arid Regions of Southeastern Türkiye
(MDPI, 2026) Cengiz, Bülent; Tekdamar, Durmuş Ali; Karaelmas, Deniz; Tekdamar, Kübra; Cengiz, Canan
This study aims to identify agricultural land suitability in Mardin province, located in the semi-arid Southeastern Anatolia Region of Türkiye. Within this framework, eight ecological criteria were selected to assess agricultural land suitability. Criterion weights were derived from expert judgments using the Analytical Hierarchy Process (AHP), a Multi-Criteria Decision-Making (MCDM) method. The criteria were evaluated within the framework of the five classes used in agricultural land-use suitability, in accordance with the guidelines of the Food and Agriculture Organization of the United Nations (FAO). Based on this classification, maps of the determined criteria were prepared using Geographic Information Systems (GISs), and an agricultural land-use suitability map was produced using a weighted overlay approach. The results indicate that 31.3% of the total land area in Mardin province falls within the highly and moderately suitable classes. For validation, the suitability map was overlaid with the Coordination of Information on the Environment (CORINE) Land Cover (CLC) 2018 data, revealing that 98.8% of highly suitable (S1) areas and 94.6% of moderately suitable (S2) areas correspond to existing agricultural lands. Furthermore, Receiver Operating Characteristic (ROC) analysis yielded an Area Under the Curve (AUC) value of 0.815, indicating an acceptable-to-good discrimination ability and confirming the robustness of the model.
From Hegemonic Zionist Thought to Fragmented Ethnic Identity: The Political Demography of Israel
(Eskisehir Osmangazi Univ, 2026) Kurt, Menderes
This study examines Israel's ideological and identity transformation and the impact of demographic changes on ethnic and religious groups in politics and society. It analyzes the role of demographics in shaping state identity, influencing state authority, and the political consequences of population changes. In ethnically and religiously fragmented societies like Israel, even small demographic shifts play a decisive role in political dynamics. The study highlights that demographics were crucial in the decline of the secular-Zionist/Israeli hegemony, the rise of right-revisionist thought, and the current fragmented structure, illustrated through the example of Haredi, Israeli Arab, and Russian Jewish groups.
Food Security Status Mediates the Relationship between Dietary Inflammation Index and Estimated Glomerular Filtration Rate: An Analysis of 2011-2018 NHANES
(Pergamon-Elsevier Science Ltd, 2026) Andrade-Laborde, Juan E.; Andrade, Jeanette M.; Ceylan, Jiyan Aslan
While evidence links proinflammatory dietary patterns to impaired kidney function, the influence that food security is a mediator and/or moderator to this relationship remains unexplored. We hypothesized food security status (FSS) would be a mediator/moderator to the relationship between a proinflammatory diet and reduced kidney function. Participants (n = 13,557) from the 2011-2018 National Health and Nutrition Examination Survey (NHANES) were included. FSS was measured using the 10-item validated US Food Security Survey Module. Dietary Inflammatory Index (DII) scores were calculated from two 24-hour dietary recalls with higher scores indicating a proinflammatory diet. Kidney function was determined through estimated glomerular filtration rate (eGFR). Mediator and moderator analyses and general linear models were performed using SPSS v29, with statistical significance set at P < .05. FSS was a partial mediator of the relationship between DII scores and eGFR (P < .05), but was not a moderator. A one-unit increase in DII scores was associated with a 0.45-unit decrease in eGFR. DII component intakes were significantly higher in individuals with eGFR >= 60 and food secure compared to individuals with eGFR <60 and food insecure (P < .05). FSS mediates the relationship between diet and kidney function, highlighting the complex interplay between nutrition and socioeconomic factors. These findings emphasize the need for targeted interventions that address food insecurity and dietary habits to support kidney health. (c) 2026 Elsevier Inc. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
First Report of Colletotrichum Theobromicola Causing Anthracnose on Japanese Spindletree (Euonymus Japonicus) in Turkiye
(Springer, 2026) Ozer, Goksel; Polat, Zuhtu; Bozoglu, Tugba; Dervis, Sibel; Turkkan, Muharrem; Gultekin, Mehmet Akif
Explainable LSTM-AdamW Based Fault Diagnosis of Aircraft Rotating Components Using Airborne Acoustic Signals under Dynamic Operating Conditions
(Nature Portfolio, 2026) Özüpak, Yıldırım; Aslan, Emrah; Zaitsev, Ievgen
Acoustic signal (AS) has emerged as a powerful non-contact technique for early detection of incipient faults in aircraft rotating components due to its high sensitivity to transient damage mechanisms. However, the strong non-stationarity and noise susceptibility of acoustic signals under dynamically varying operating conditions present significant challenges for reliable fault diagnosis. In this study, an explainable deep learning framework based on a Long Short-Term Memory (LSTM) network optimized with the AdamW algorithm is proposed for fault diagnosis of aircraft-related rotating components using acoustic signals. The framework leverages sequential learning to capture the temporal evolution of acoustic signals and is systematically compared with conventional recurrent architectures, including Recurrent Neural Networks (RNNs) and Gated Recurrent Units (GRUs). Experimental results demonstrate that the proposed LSTM-AdamW model achieves superior diagnostic performance, reaching a test accuracy and macro-F1 score of 99.26% under dynamic operating conditions. The enhanced performance is attributed to the LSTM's ability to model long-term temporal dependencies and the regularization benefits of the AdamW optimizer through decoupled weight decay. To improve transparency and physical interpretability, explainable artificial intelligence techniques based on Local Interpretable Model-Agnostic Explanations (LIME) and SHapley Additive exPlanations (SHAP) are employed. The explainability analysis reveals that classification decisions are driven by localized, physically meaningful transient acoustic patterns associated with fault-induced events. In addition, a Taylor diagram-based statistical assessment confirms strong agreement between model predictions and reference signals, indicating robust preservation of temporal signal characteristics. The results suggest that the proposed explainable LSTM-AdamW framework provides a reliable, computationally efficient, and interpretable solution for acoustic signal-based fault diagnosis in aerospace applications, with strong potential for real-time condition monitoring and predictive maintenance.
Effects of Human Umbilical Cord Derived Mesenchymal Stem Cells Transplantation on Ovarian Function in Rats with Ovarian Hyperstimulation Syndrome
(Springer, 2026) Karahüseyinoğlu, Serçin; Özdemir, Feride; Köktürk, Sibel; Usta, Emel; Karahan, Selim
Ovarian hyperstimulation syndrome (OHSS) is a serious iatrogenic complication of assisted reproductive treatments, characterized by increased vascular permeability and fluid shifts leading to life-threatening conditions such as edema, hypovolemia, and acute respiratory distress syndrome. Mesenchymal stem cells (MSCs) are multipotent cells with anti-oxidant, anti-inflammatory, and immunomodulatory properties. In this study, the potential protective effects of human umbilical cord-derived MSCs (HUC-MSCs) were investigated in Wistar albino rats, in which an OHSS model was estab-lished. Hoechst 3342 -labeled MSCs were administered intraperitoneally to rats prior to human chorionic gonadotropin (hCG) stimulation to evaluate their potential prophylactic effect in the OHSS model. Ovarian tissues were evaluated histopathologically by light and electron microscopy. Serum levels of 17 beta-estradiol (E2) and interleukin-6 (IL-6) were also analyzed. Oedema, vascular dilation and haemorrhagic areas were evident in the OHSS group but decreased after MSC administration. Compared with controls, OHSS rats showed decreased follicular development and increased atretic follicles and corpus luteum structures. Vascular endothelial growth factor (VEGF) immunoreactivity differed significantly among the control, MSC treated and OHSS groups. In the OHSS group, E2 and IL-6 levels increased significantly but were significantly reduced following MSC administration. Our findings suggest that MSC administration may exert protec-tive effects against ovarian damage associated with OHSS. However, further studies are necessary to clarify the potential role of MSCs in modulating OHSS pathophysiology.
Eco-Engineered Fe3O4@cellulose@APTES Nanocomposites as Efficient Dye-Sensitized Solar Cell Counter Electrodes: Electrochemical Analysis and Photovoltaic Performance
(Elsevier, 2026) Horoz, Sabit; Ece, Muhyettin; Kutluay, Sinan
This study examines whether environmentally friendly and cost-effective Fe3O4@natural-cellulose@APTES magnetic nanocomposites (MNCs) could be used as a new type of counter electrode in dye-sensitized solar cells (DSSCs). Using natural-cellulose as a renewable biopolymer makes the system more sustainable and brings good biocompatibility and a naturally active surface. Furthermore, coating the material with APTES (3-aminopropyltriethoxysilane) stabilises the surface and facilitates more efficient electron transfer. These features together make the proposed material a promising alternative worth exploring in DSSC applications. The MNCs were characterized using FTIR, SEM-EDS, XRD, BET, UV-Vis, VSM, TGA, XPS, and EIS. XPS analysis provided direct insight into the surface chemical states and confirmed that APTES functionalization subtly altered the local electronic environment, which plays a key role in facilitating interfacial charge transfer. Electrochemical impedance spectroscopy (EIS) results revealed that the Fe3O4@natural-cellulose@APTES MNCs exhibited multilayer dielectric behavior. Three distinct relaxation modes corresponding to charge transfer, grain boundary conductivity, and ionic migration processes were identified in the Nyquist plots at high, medium, and low frequency regions, respectively. The APTES coating significantly reduced the charge transfer resistance (R1 ti 22.70 MS2 -* R1 ti 0.17 MS2, as determined from fitting) and decreased the total relaxation time from the millisecond to the microsecond level. Furthermore, dielectric constant (s ') and loss factor (tan S) analyses confirmed the presence of Maxwell-Wagner-type interface polarization and dipole resonance. Mott-Schottky measurements revealed that the Fe3O4@natural-cellulose@APTES MNCs exhibit n-type semiconductor characteristics with a carrier density of 6.5 & times; 1017 cm-3. In DSSC performance tests, the APTES-modified electrodes exhibited significantly improved photovoltaic performance, with average values of Voc = 0.75 f 0.02 V, Jsc = 12.12 f 0.39 mA/cm2, FF = 0.67 f 0.01, and PCE = 5.90 f 0.34%, while the highest efficiency reached 6.28%. These findings demonstrate that Fe3O4@natural-cellulose@APTES MNCs, with both high electronic conductivity and superior catalytic properties, represent a sustainable alternativeto platinum-based electrodes.

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