Recep Tayyip Erdoğan Üniversitesi Kurumsal Akademik Arşivi
DSpace@RTEÜ, Recep Tayyip Erdoğan Üniversitesi tarafından doğrudan ve dolaylı olarak yayınlanan; kitap, makale, tez, bildiri, rapor, araştırma verisi gibi tüm akademik kaynakları uluslararası standartlarda dijital ortamda depolar, Üniversitenin akademik performansını izlemeye aracılık eder, kaynakları uzun süreli saklar ve yayınların etkisini artırmak için telif haklarına uygun olarak Açık Erişime sunar.
Güncel Gönderiler
Fluopyram in agricultural ecosystems: environmental fate, microbial transformation, ecotoxicity, and resistance risks of an SDHI fungicide
(Frontiers Media SA, 2026) Zhang, Chaoqun; Ullah, Muhammad Zafar; Guan, Chengwei; Mubeen, Mustansar; Ding, Yongliang; Altaf, Muhammad Tanveer; Wang, Jie
Fluopyram is a next-generation succinate dehydrogenase inhibitor (SDHI) fungicide, which is very popular in the management of economically significant fungal conditions in cereals, fruits, vegetables, and ornamental crops. It works by inhibiting the complex II present in the mitochondria by blocking succinate dehydrogenase, which electron transport and energy generation, eventually hindering fungal development leading to death of the pathogen. Besides having good fungicidal effects, fluopyram has also demonstrated a nematicidal effect, which has also enhanced its utility in various agricultural systems. Empirical studies indicate that SDHIs can induce mortality, mitochondrial dysfunction, oxidative stress, and developmental delays in non-target organisms. Additionally, the environmental persistence of these compounds raises concerns about their potential for ecological disruption. The extensive and growing use of SDHIs however has also given rise to the issue of resistance development with recorded resistance cases in a number of fungal populations and has placed a strong demand on the need to use crop rotation strategies, combination formulations and resistance monitoring initiatives. In addition to its agronomic advantages, the environmental fate of fluopyram such as its mobility, persistence and degradation characteristics in soil and water and the possibility of food system residues have been the subject of attention. Unlike previous studies focusing on isolated aspects, this review comprehensively links efficacy, environmental dynamics, and mechanistic toxicity of fluopyram across multiple biological systems. It highlights underexplored areas including metabolite toxicity, chronic ecological exposure, and resistance risks. This integrated approach offers valuable insights for safer pesticide management and future research directions.
Problematic media use, screen time, and literacy-related motor skills in first-grade children
(Routledge, 2026) Yazıcı, Merve; Yıldız, Yasin; Kıvrak, Mehmet
Increasing exposure to digital media has raised concerns about its developmental correlates. This cross-sectional study examined screen time duration and problematic media use in relation to literacy-related motor skills in 196 first-grade children. Parents reported weekday and weekend screen time and completed the Problematic Media Use Scale, while teachers rated motor performance. Nearly half of the children exceeded two hours of screen time on weekdays, rising to 77% on weekends. Weekday screen time above two hours was associated with lower fine motor scores (B = −1.67, p = 0.011). Higher problematic media use scores were also associated with poorer fine motor performance (B = −0.061, p = 0.006), including after adjustment for hyperactivity/inattention symptoms. Associations with body awareness were inconsistent. These findings suggest that screen duration and problematic media use capture partly distinct aspects of media engagement, with problematic use showing a more consistent association with fine motor performance.
Clinical characteristics and factors associated with one-year smoking cessation among smokers with COPD: a subgroup analysis of a multicentre randomised trial
(Dove Medical Press Ltd, 2026) Marım, Feride; Karadoğan, Dilek; Telatar, Tahsin Gökhan; Kaya, İlknur; Atlı, Siahmet; Köse Kabil, Neslihan; Akgün, Metin
Background: Smoking cessation is the most effective intervention for modifying the clinical course of chronic obstructive pulmonary disease (COPD), yet many patients continue to smoke after diagnosis. We evaluated the characteristics associated with cessation at one year among smokers with COPD in a multicentre randomised cessation trial. Methods: This prespecified subgroup analysis included patients with COPD randomised to immediate referral to a smoking cessation clinic or to usual care. Smoking status one year later was determined through a structured telephone interview, and patients who had quit were contacted and their cessation was verified by exhaled carbon monoxide measurement; 48 of the 220 patients (21.8%) were lost to follow-up, leaving 172 patients for analysis. A prespecified six-variable logistic regression model was fitted; Firth penalised regression and an analysis classifying patients lost to follow-up as continuing smokers were prespecified sensitivity analyses. Results: Of 172 patients, 32 (18.6%) had quit at one year: 24 of 93 (25.8%) allocated to immediate referral versus 8 of 79 (10.1%) allocated to usual care (p = 0.010). Quitters were older and had a lower baseline FEV1 in unadjusted comparisons. In the multivariable model, usual care was associated with lower odds of cessation (OR, 0.25; 95% CI, 0.09–0.64), whereas absence of comorbidity (OR, 2.64; 95% CI, 1.06–6.60) and more than 1 exacerbation-related hospitalisation (OR, 9.32; 95% CI, 1.97–44.06) were associated with higher odds; the latter estimate rests on 10 patients and is imprecise. Baseline FEV1 and Fagerström score were not independently associated with cessation. Conclusion: Immediate referral to a cessation clinic was the factor most strongly associated with one-year abstinence, together with absence of comorbidity and, tentatively, repeated hospitalisation; greater disease severity was associated with quitting only in unadjusted comparisons. These exploratory findings support structured cessation pathways in routine COPD care.
Flux pinning activation energy from levitation force relaxation in a single-grain YBCO bulk superconductor
(Springer, 2026) Güner, Sait Barış; Bekiryazıcı, Zafer
The present study investigates the temperature dependence of the magnetic levitation force for a single-grain YBCO bulk sample with a final diameter of approximately 16 mm and a thickness of approximately 9 mm. This sample was fabricated by the top-seeded melt growth (TSMG) method using an Nd123 seed crystal. The superconducting properties of the single-grain YBCO bulk were examined at various low temperatures (37, 47, 57, 67, and 77 K) using a vibrating sample magnetometer (VSM) and a home-made magnetic levitation force measurement system. The activation energy was estimated from the logarithmic relaxation of the levitation force over the low-temperature range of 37–77 K. The temperature dependence of the estimated activation energy was systematically investigated for a CeO₂-added, TSMG-grown single-grain YBCO bulk superconductor. At 37, 47, 57, 67, and 77 K, the activation energies were found to be 0.078, 0.099, 0.121, 0.143, and 0.166 eV, respectively. The zero-field critical current densities (Jc) were determined to be 19.7 × 104, 12.9 × 104, 8.5 × 104, 5.42 × 104, and 1.96 × 104 A/cm2 at temperatures of 37, 47, 57, 67, and 77 K, respectively. The aim of this study is to improve the understanding of the efficacy of large-scale superconductor levitation across different temperatures.
The spiritual roots of sustainable consumption among Muslim consumers: environmental and health consciousness as mediating pathways
(Multidisciplinary Digital Publishing Institute (MDPI), 2026) Hacıkeleşoğlu, Hızır; Avcı, İbrahim; Vural, Muhammet Enes
Research on sustainable consumption has largely emphasized secular motivations, leaving the psychological role of spirituality/religiosity underexplored within Muslim societies. Addressing this gap, this study investigates the relationship between spirituality and sustainable consumption behaviors (SCBs) among Muslim consumers in Türkiye, with environmental and health consciousness examined as parallel mediating mechanisms. Data were collected from 414 adult Muslim consumers through an online survey and analyzed using confirmatory factor analysis and structural path analysis via Hayes’ PROCESS macro (Model 4). The empirical findings indicate that spirituality is significantly and positively associated with sustainable consumption behaviors both directly and indirectly. Environmental consciousness emerged as a numerically stronger mediating pathway than health consciousness in the relationship between spirituality and sustainable consumption. Notably, when both mediators are included in the model, the direct path from spirituality to sustainable consumption behaviors becomes non-significant, consistent with a full-mediation pattern in the estimated model, in line with the value–attitude–behavior hierarchy. These results suggest that spirituality’s association with consumption decisions is, within the estimated model, transmitted through intervening attitudinal states. The study suggests that sustainable consumption initiatives in Muslim contexts can be meaningfully strengthened by integrating eco-friendly practices with consumers’ underlying spiritual and religious values.
