Bartın Üniversitesi Araştırma ve Akademik Performans Sistemi
DSpace@Bartın, Bartın Üniversitesi’nin bilimsel araştırma ve akademik performansını izleme, analiz etme ve raporlama süreçlerini tek çatı altında buluşturan bütünleşik bilgi sistemidir.
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Öğe Türü: Yayın , Review: fundamentals, applications, and progress of basalt fiber-reinforced thermoplastic composites(Springer, 2026) Tayfun, Ümit; Akar, Alinda Öykü; Yılmaz, Volkan Murat; Tayfun, Ümit; Yılmaz, Volkan Murat; Mühendislik Mimarlık ve Tasarım Fakültesi, Temel Bilimler Bölümü Bölümü; Bartın Organize Sanayi Bölgesi Meslek Yüksekokulu, Elektronik ve Otomasyon BölümüThis review provides an in-depth overview of basalt fiber-reinforced thermoplastic composites (BFRTPCs), highlighting their distinctive mechanical, thermal, and environmental properties. It discusses the compatibility of basalt fibers (BF) with various thermoplastic matrices, processing methods, structure-property relationships, and the applications of BFRTPCs in the automotive, aerospace, marine, and construction sectors. The main benefits of using BF in thermoplastic composite parts, such as weight reduction in the logistics sector, are illustrated through multifunctional and cost-effective application examples. The integration of BF into thermoplastics provides important performance advantages, including higher specific stiffness than GF, standardization, cost reduction, and improved interface durability. The influence of the BF inclusions in both short and continuous form on the mechanical, thermal, flame-retardant, and environmental characteristics of its thermoplastic-based composites is summarized. Finally, future prospects and key challenges related to the standardization and industrial adoption of BFRTPCs are discussed.Öğe Türü: Yayın , Polyacrylic acid/graphene oxide supported bimetallic CoNi electrode architecture for a wide voltage window in aqueous electrolyte supercapacitors(SPRINGER INT PUBL AG, 2026) Çağlar, Aykut; Demir, Betül; Yazar, Sibel; Özeroğlu, Cemal; Kıvrak, Hilal; Çağlar, Aykut; Mühendislik Mimarlık ve Tasarım Fakültesi, Temel Bilimler Bölümü BölümüThe development of mechanically stable and binder-free electrode architectures with enhanced electrode/electrolyte interfacial interaction remains a major challenge for achieving high-performance aqueous supercapacitors. In this study, a polyacrylic acid/graphene oxide-supported bimetallic CoNi electrode was directly fabricated on carbon felt by radical polymerization. The hydrogel coating improved the adhesion of the active material to the current collector, while graphene oxide enhanced the electrochemically active surface area and charge transfer. The electrochemical performances of Co/GO, Ni/GO, and CoNi/GO electrodes with different Co/Ni ratios were systematically investigated. Among all compositions, the PAAc-CoNi(70-30)/GO electrode exhibited the highest capacitive performance. A symmetric supercapacitor assembled with this electrode operated at 1.4 V in 1.0 M NaOH, delivering a maximum energy density of 23.3 Wh kg-1 at 0.4 A g-1 and a maximum power density of 8400 W kg-1 at 6 A g-1.In addition, the device retained 96.75% of its initial capacitance after 5000 cycles, demonstrating excellent cycling stability. These results highlight the potential of the proposed hydrogel-assisted electrode architecture for high-performance aqueous supercapacitors.Öğe Türü: Yayın , Perceived Stress and Compassion Fatigue in Intensive Care Nurses: The Serial Mediating Roles of Psychological Resilience and Burnout(Wiley, 2026) Yeşildal, Müjdat; Uçar, Özge; Tanış, Yunus Emre; Uçar, Özge; Sağlık Bilimleri Fakültesi, Hemşirelik BölümüBackground Intensive care nurses face substantial occupational stress and are at high risk of compassion fatigue. While psychological resilience is recognized as a protective personal resource and burnout as a major risk factor, little is known about how these two constructs interact, in sequence, to link perceived stress to compassion fatigue. Aims To examine the direct and indirect effects of perceived stress on compassion fatigue among nurses, while specifically investigating the serial mediating roles of psychological resilience and burnout within a structural equation modelling framework. Methods This descriptive, cross-sectional study was conducted between March and May 2026 with intensive care nurses from training and research, public and private hospitals in Central Anatolia, T & uuml;rkiye, recruited through convenience sampling. Perceived stress, burnout, psychological resilience and compassion fatigue were measured with validated scales. The hypothesized serial mediation model was tested using covariance-based structural equation modelling with bootstrapping (5000 subsamples). Results A total of 768 intensive care nurses participated in the study. Perceived stress correlated positively with burnout and compassion fatigue and negatively with psychological resilience (p < 0.001). The model showed excellent fit (chi 2/df = 1.396, CFI = 0.986, RMSEA = 0.023). Perceived stress was directly associated with compassion fatigue (beta = 0.290) and showed significant indirect associations via psychological resilience (beta = 0.059), burnout (beta = 0.196) and the serial path (beta = 0.036). Indirect effects accounted for 50.1% of the total effect, with the burnout pathway contributing 67.4% of the total indirect effect. The model explained 49.9% of the variance in compassion fatigue (R2 = 0.499). Conclusions Perceived stress was associated with compassion fatigue both directly and indirectly through psychological resilience and burnout, in a pattern consistent with the hypothesized serial model. Because the design was cross-sectional, these indirect associations should not be interpreted as evidence of causal mediation. The stronger burnout pathway suggests that organizational strategies targeting burnout, alongside resilience-enhancing programmes, may be particularly relevant for protecting nurses' professional well-being. Relevance to Clinical Practice The findings suggest that nursing administrators should consider multidimensional strategies to address burnout and support psychological resilience. Given the relatively stronger indirect association through burnout, organizational strategies targeting modifiable workplace conditions, such as balanced workloads, adequate staffing and systematic psychological support, may warrant particular attention. At the same time, resilience-enhancing interventions may serve as a complementary individual-level approach. Such strategies may support nurses' professional well-being and capacity for compassionate care.Öğe Türü: Yayın , Cholinesterase Inhibition and Anticancer Properties of [4-(Benzyloxy) phenyl]{Methylidene}hydrazinylidene]-1,3-dihydro-2H-Indol-2-ones Using Swiss Target-guided Prediction(2026) Maliyakkal, Naseer; Taslimi, Parham; Tuzun, Burak; Menadi, Soumaya; Cacan, Ercan; Beeran, Asmy Appadath; Bindra, Sandeep; Taslimi, Parham; Fen Fakültesi, Biyoteknoloji BölümüIntroduction Our group previously reported isatin-based hydrazones (ISB1-ISB6) were further evaluated for their in vitro acetylcholine esterase, butylcholinestrase and cytotoxic effects on cancer cell lines. The compounds successfully suppressed AChE and BChE, with Ki values ranging from 1.06 +/- 0.07 to 23.57 +/- 1.64 nM for AChE and 15.31 +/- 1.28 to 84.41 +/- 8.04 nM for BChE. However, the IC50 values of these compounds for AChE and BChE were found to be in the ranges of 1.45-25.51 nM and 16.38-92.90 nM, respectively.Method Furthermore, to explore the anti-tumor potential of our newly synthesized compounds, we conducted a cytotoxic MTT assay to assess their impact on two different cancer cell lines: MCF7 and A2780.Results Our findings highlight diverse cytotoxic profiles among the compounds. Specifically, ISB2, ISB3, and ISB4 demonstrated potential cytotoxicity in the A2780 cell line, while ISB6 exhibited significant cytotoxicity in the MCF7 cell line. This suggests that these compounds have different effects on cancer cell types, indicating the need for further investigation into their potential applications in cancer therapy.Conclusion Finally, molecular docking and dynamic study revealed that lead molecule ISB3 provides stability in the AChE and BChE protein-ligand complex.Öğe Türü: Yayın , Association between physical activity and the intensity of menstrual pain in young women(Spanish Assoc Sports Performance Analysis-AEAREDO, 2027) Dilek, Ahmet Naci; Preljević, Adem; Bazanov, Boriss; Grle, Ivana; Grle, Maki; Šabić, Ernest; Ćeleš, Naim; Skender, Nijaz; Sporis, Goran; Prlić, Jerko; Tiric, Dejan; Tiric, Bozenka Galic; Kurtović, Natalija; Antonić, Davorin; Čular, Dražen; Franjko, Ivica; Duroci, Ivan; Ljesević, Davor; Ajman, Hrvoje; Širić, Željko; Fiorentini, Fredi; Kovacevic, Zeljko; Morina, Besnik; Milošević, Milan; Vukicevic, Veljko; Dilek, Ahmet Naci; Spor Bilimleri Fakültesi, Rekreasyon BölümüThis exploratory cross-sectional study examined physical activity patterns, menstrual characteristics, and menstrual pain intensity in 53 young women (mean age 19.98 +/- 0.72 years). Physical activity during the previous seven days was estimated using the International Physical Activity Questionnaire framework and expressed as MET-min/week, while menstrual pain during the most recent cycle was assessed on a 0-10 numerical rating scale. Severe pain was reported by 19 participants (35.8%), and 39 participants (73.6%) were classified in the high physical activity category. Total physical activity was not significantly associated with pain intensity (Spearman's rho = .225, p = .105). Moderate physical activity showed a positive association with pain intensity (Spearman's rho = .428, p = .002), but the cross-sectional design does not permit causal interpretation. Rather than supporting a simple protective effect of greater activity volume, the findings suggest that the relationship between physical activity and menstrual pain may depend on individual symptoms, behavioural responses, measurement context, and unmeasured psychological or clinical factors. Because the sample was small, narrowly distributed by age, and dominated by highly active participants, the results should be interpreted as preliminary. Future studies should use larger and more heterogeneous samples, objective activity monitoring, validated multidimensional dysmenorrhea instruments, and repeated assessments across several menstrual cycles.
