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- MakaleAçık Erişim2026Scopus SJRQ1Physical education and sports teacher candidates’ perspectives on meaning in life and smartphone addiction: a mixed-method study
Şahin, Aykut; Öner, Burak
Objective – This study aims to examine the relationship between physical education and sports (PES) teacher candidates’ levels of meaning in life and smartphone addiction, and to explore in depth how this relationship occurs through qualitative data. Methods – The study was conducted using the explanatory sequential design, one of the mixed-method designs. The quantitative part of the study included 392 PES teacher candidates studying at four universities in Turkey. Quantitative data were collected using the Meaning in Life Questionnaire and the Smartphone Addiction Scale—Short Form. Results – The findings showed a low-level, negative, and significant relationship between the presence of meaning and smartphone addiction, whereas no significant relationship was found between the search for meaning and smartphone addiction. Additionally, a low-level, positive, and significant relationship was determined between the presence of meaning and the search for meaning. In the qualitative phase of the research, semi-structured interviews were conducted to support the quantitative findings. Participants’ views indicated that sports provide individuals with meaning in life and partially balance smartphone use. Conclusion – As a result, it was determined that the concept of the search for meaning is influenced by the sports context and the sample’s characteristics, and is not a direct risk factor for smartphone addiction; rather, the search for meaning may be an indicator of adaptation or personal development, not merely a lack of a meaningful life. In contrast, it was concluded that experiencing a high level of meaningful life among PES teacher candidates has a protective effect against the risk of smartphone addiction.
- MakaleAçık Erişim2026Scopus SJRQ2Sustainable self-compacting mortars: mechanical, durability and microstructural evaluation with cement replacement materials under aggressive environmental conditions
Karabulut, Büşra; Yön, Merve Şahin; Karataş, Mehmet
The aim of this study is to assess the mechanical, physical and durability properties of environmentally friendly self-compacting mortars produced using materials containing industrial waste and natural stone. The test series were produced by substituting diatomite (D) and C class fly ash (F) with Portland cement (PC) up to 30% by weight. To evaluate the workability, mechanical and durability properties of self-compacting mortars (SCM), a total of 19 series, one of which was a reference sample, were prepared. The samples, whose mechanical properties and durability properties were investigated under sulphate attack and freeze-thaw effects, were prepared as 40 × 40 × 160 mm, and the series, whose physical properties were examined, were prepared as 50 × 50 × 50 mm. Also, SEM/EDS (Scanning Electron Microscope - Energy Dispersive X-Ray) and XRD (X-Ray Diffraction) analyses were carried out to evaluate the microstructural properties of the mixtures. When the 90-day compressive strength results were examined, it was determined that the highest decrease in compressive strength compared to the control sample occurred in the D20F10 sample with a rate of 61%, and the least decrease occurred in the D5 series with a rate of 10%. When the losses in compressive strength were evaluated after 50 freeze-thaw cycles, it was determined that there was a 100% reduction in the binary and ternary series containing D15 and D20. After six months of sulphate exposure, the D5F25 sample exhibited the most significant compressive strength reduction at roughly 40%, whereas the D15F15 series experienced the least compressive strength decline at around 5%.
- MakaleYalnız künye2026Scopus SJRQ2Comparative phytochemical characterization and bioactivity evaluation of hemp (Cannabis sativa L.) root extracts using green extraction technologies
Korkmaz, Nesrin; Yaman, Cennet; Güçlü, Ebru; Doğan, Üzeyir; İmamoğlu, Rızvan; Aslan korkmaz, Şengül
This study investigates the largely untapped therapeutic potential of industrial hemp (Cannabis sativa L.) roots, which are usually discarded as agricultural byproducts. The phytochemical composition and biological activities of extracts obtained using Soxhlet, ultrasound-assisted extraction (UAE), and supercritical CO₂ (SC-CO₂) techniques were comparatively evaluated. Compounds were characterized using FTIR, GC–MS, LC–MS, and ICP-MS. SC-CO₂ extraction yielded the most chemically diverse profile, particularly enriched in fatty acids and triterpenoids. In vitro assays demonstrated that SC-CO₂ and Soxhlet extracts significantly promoted fibroblast migration and reduced inflammatory responses compared to UAE extracts. Gene and protein expression analyses further supported these bioactivities. In conclusion, this study highlights the phytopharmaceutical potential of hemp root extracts obtained using alternative extraction techniques, including supercritical CO₂ extraction. While SC-CO₂ extraction enabled the recovery of a chemically diverse extract, the present study focuses on comparative phytochemical and bioactivity outcomes rather than a quantitative assessment of environmental sustainability. The findings support further investigation of hemp roots, currently treated as an underutilized biomass, for potential applications in natural product research.
AtıfOpenAlex1
İncele - MakaleAçık Erişim2025Scopus SJRQ2Hybrid CNN-Transformer Model for Accurate Impacted Tooth Detection in Panoramic Radiographs
Küçük, Deniz Bora; Imak, Andaç; Özçelik, Salih Taha Alperen; Çelebi, Adalet; Türkoğlu, Muammer; Sengur, Abdulkadir; Koundal, Deepika
Background/Objectives: The integration of digital imaging technologies in dentistry has revolutionized diagnostic and treatment practices, with panoramic radiographs playing a crucial role in detecting impacted teeth. Manual interpretation of these images is time consuming and error prone, highlighting the need for automated, accurate solutions. This study proposes an artificial intelligence (AI)-based model for detecting impacted teeth in panoramic radiographs, aiming to enhance accuracy and reliability. Methods: The proposed model combines YOLO (You Only Look Once) and RT-DETR (Real-Time Detection Transformer) models to leverage their strengths in real-time object detection and learning long-range dependencies, respectively. The integration is further optimized with the Weighted Boxes Fusion (WBF) algorithm, where WBF parameters are tuned using Bayesian optimization. A dataset of 407 labeled panoramic radiographs was used to evaluate the model’s performance. Results: The model achieved a mean average precision (mAP) of 98.3% and an F1 score of 96%, significantly outperforming individual models and other combinations. The results were expressed through key performance metrics, such as mAP and F1 scores, which highlight the model’s balance between precision and recall. Visual and numerical analyses demonstrated superior performance, with enhanced sensitivity and minimized false positive rates. Conclusions: This study presents a scalable and reliable AI-based solution for detecting impacted teeth in panoramic radiographs, offering substantial improvements in diagnostic accuracy and efficiency. The proposed model has potential for widespread application in clinical dentistry, reducing manual workload and error rates. Future research will focus on expanding the dataset and further refining the model’s generalizability.
AtıfScopus36OpenAlex34
İncele - MakaleAçık Erişim2025Scopus SJRQ4Protective Effect of Sumac and Terebinth Extracts Against the Negative Effects of Breast Cancer on Cardiac Tissues of in Rats; [Efecto protector de los extractos de zumaque y terebinto contra los efectos negativos del cáncer de mama en los tejidos cardíacos de ratas]
Erişir, Figen Erdem; Aydın, Sevinç; Tuzcu, Zeynep; Yılmaz, Ökkeş
Due to the toxic side effects of chemotherapeutic drugs used in breast cancer, interest in medicinal plants has increased in order to develop alternative cancer drugs. The experimental model of this study was created to observe the remedial impacts of the Terebinth (Pistacia terebinthus L.) and the Sumac (Rhus coriaria L.) plants against the negative effects of 7,12-Dimethylbenz[a]anthracene induced breast cancer on cardiac tissues in rats. For this purpose, the levels of malondialdehyde were analyzed the indicator of the oxidative stress breast cancer will cause on cardiac tissues, the catalase, glutathione transferase and superoxide dismutase enzymes, glutathione, which holds and important place among antioxidant impacts and proteins. At the end of the study, it was determined that there was an increase in malondialdehyde levels, a decrease in glutathione and protein amounts, and a decrease in antioxidant enzyme levels in rats treated with cancer-induced 7,12-Dimethylbenz[a]anthracene.
- MakaleYalnız künye2025Scopus SJRQ2Phylogenetic analysis of the nrDNA ITS and cpDNA rbcL sequences of some endemic Dianthus (Caryophyllaceae) species from Türkiye
Sevindik, Emre; Güner, Özal; Yolcu, Seher; Başköse, İsa; Paksoy, Mehmet Yavuz; Khadivi, Ali; Tunç, Yazgan; Yaman, Mehmet
In this study, the phylogenetic relationship of four species of Dianthus genus which are endemic and distributed in Türkiye, including D. zederbaueri Vierch, D. varankii Hamzaoğlu & Koç, D. halisdemirii Hamzaoğlu & Koç, and D. goekayi Kaynak, was determined using nuclear DNA (nrDNA) internal transcribed spacer (ITS) and chloroplast DNA (cpDNA) rbcL regions. After sampling from the plant, DNA was extracted and the ITS (ITS4-ITS5A) and rbcL (rbcLaF-rbcLaR) primers were used to perform PCR amplification. Sequencer 5.4.6. was used to edit the sequences. MEGA 11 software was used to determine the nucleotide ratios, genetic distance matrix, and π = nucleotide diversity. Some species of Dianthus available in the National Center for Biotechnology Information (NCBI) were used to construct maximum likelihood (ML) phylogenetic trees. As a result, based on the ITS analysis π = nucleotide diversity was determined as: 0.001543, and the result of the rbcL analysis π = nucleotide diversity was determined as: 0.000000. In the ITS results, D. halisdemirii, D. superbus, and D. varankii appeared together, while D. zederbaueri and D. aculeatus appeared together. The rbcL results showed that D. zederbaueri and D. varankii were closely related, but the relationship between D. halisdemirii and D. goekayi could not be determined. Furthermore, in the phylogenetic tree constructed by taking the ITS and rbcL sequences of Dianthus, Gypsophila, Silene, Arenaria, Saponaria, Cerastium, Stellaria, Petrorhagia, Minuartia, Agrostemma, and Polycarpon species from NCBI using ITS and rbcL sequences, our endemic Dianthus species appeared in the same group with Petrorhagia, Gypsophila, and Saponaria species. To conclude, our ITS and rbcL results were consistent in determining the phylogenetic relationships of our Dianthus species with other species.
AtıfScopus1İncele - MakaleAçık Erişim2025Scopus SJRQ1Effect of Ferula sp. on sperm cryotolerance, quality, and fatty acid composition in common carp (Cyprinus carpio)
Ölçülü, Abdullatif; Özçiçek, Esin; Kutluyer Kocabaş, Filiz; Kızak, Volkan; Kocabaş, Mehmet; Yılmaz, Ökkeş
Ferula sp. is a perennial herbaceous plant and is used in traditional medicine owing to their antimicrobial, antiviral, aphrodisiac and spermatogenic activities in the world. Hence, Ferula sp. was used in the present study for cryopreservation protocol as a herbal supplement. The impact of different concentrations [0 mM (Control), 30 µg L−1, 60 µg L−1, 90 µg L−1] of Ferula sp. extract on the quality and fatty acid (FAs) composition was assessed in fresh and cryopreserved sperm of Cyprinus carpio. Optimal supplementation of Ferula sp. at a concentration of 60 µg L−1 in the freezing extender significantly improved post-thawed sperm quality of C. carpio. Sperm motility parameters were assessed using the sperm class analyzer system. The fatty acid (FAs) content in sperm was analyzed using gas chromatography. The results revealed that the increases in motility rate (80.0 ± 3.54%) at 60 µg L−1 were increased significantly (p < 0.05). Significant differences in sperm parameters [(VCL: curvilinear velocity, VSL: straight line velocity, VAP: average path velocity, and BCF: beat cross frequency)] were observed between the different treatments (p < 0.05). The Monounsaturated fatty acids (MUFAs) showed a slight increase in comparison to fresh spermatozoa during cryopreservation. DHA (Docosahexaenoic acid), LA (Linoleic acid) and ARA (Arachidonic acid) were identified as the major PUFAs (polyunsaturated fatty acid) in the sperm plasma membrane, and however the total PUFAs reduced all treated compared to fresh sperm samples after post-thawing. Overall, the supplementation with Ferula sp. to extender at a concentration of 60 µg L−1 positively influenced the motility parameters and FAs levels during cryopreservation and, Ferula sp. may act as a promising protective substance for the conservation of valuable fish genetic resources.
AtıfScopus1İncele - MakaleAçık Erişim2025Scopus SJRQ2Localization of phoenixin-14 and nesfatin-1, known as pleiotropic peptides, in some central and peripheral organs of female and male rats
Esen, Engin; Parlak Ak, Tuba; Yaman, Mine
Neuropeptides are diverse neuronal signaling molecules that regulate cellular and physiological functions. Phoenixin (PNX) and Nucleobindin 2 (NUCB2)/nesfatin-1, which are known to co-localize and interact in some hypothalamic nuclei such as arcuate nucleus (ARC) and paraventricular nucleus (PVN), have important pleiotropic roles. The aim of this study was to investigate the immunohistochemical distribution of these neuropeptides in biological tissues of adult female and male rats. For this purpose, a total of 12 Spraque-Dawley rats, 6 female and 6 male, aged 3–4 months, were sacrificed and hypothalamus, pituitary, brain, cerebellum, adrenal gland, ovary and testis tissues were taken. Serum gonadotropin-releasing hormone (GnRH), plasma PNX-14, and NUCB2/nesfatin-1 concentrations showed no statistically differences between sexes. PNX-14 immunoreactivity was more prominent in the ARC of male rats, whereas NUCB2/nesfatin-1 immunoreactivity was markedly higher in the PVN of females. In the anterior pituitary, PNX-14 and NUCB2/nesfatin-1 staining was more intense in females relative to males. PNX-14 immunoreactivity in the brain was quite high in female and male rats, and this immunoreactivity in the cerebellum was low in both sexes. NUCB2/nesfatin-1 exhibited moderate immunoreactivity in these organs in both sexes. In the adrenal cortex of both sexes, PNX-14 immunoreactivity was quite intense, while NUCB2/nesfatin-1 was a moderate intensity. PNX-14 immunoreactivity was more intense in the ovary, whereas NUCB2/nesfatin-1 immunoreactivity was more prominent in the testis. In conclusion, we demonstrated the immunohistochemical localization of PNX-14 and NUCB2/nesfatin-1 neuropeptides, in conjunction with serum GnRH levels, in organs associated with the hypothalamic-pituitary-gonadal (HPG) and hypothalamic-pituitary-adrenal (HPA) axes of adult male and female rats.
AtıfScopus1WoS1OpenAlex1İncele - MakaleAçık Erişim2026Scopus SJRQ1Regulation of Quality and Phenolic Metabolism in Apricot Fruit by Postharvest Salicylic Acid and Putrescine Applications
Sakaldaş, Mustafa; Şen, Fatih; Gundogdu, Muttalip; Aglar, Erdal
Apricots are a highly sensitive product that suffers rapid quality losses due to physiological and biochemical processes such as increased respiration, ethylene production, cell wall breakdown, and changes in phenolic compounds that occur in the post-harvest period, and this significantly shortens their shelf life. This study evaluated the effects of salicylic acid (SA) and putrescine (Put) applications on post-harvest quality characteristics, organic acid metabolism, and phenolic compound stability in apricot (Prunus armeniaca L.) fruits. Fruits harvested at commercial maturity were treated with four different applications: control, SA (1 mM), Put (1 mM), and a combination of SA and Put. In this study, the physiological quality parameters such as weight loss, decay rate, soluble solids content (SSC), titratable acidity (TA), pH, and respiration rate were measured, and biochemical analyses of organic acids and individual phenolic compounds were performed. With increasing storage time, weight loss, decay rate, and pH values increased in all treatment groups, whereas significant decreases occurred in organic acids, ascorbic acid, and total phenolic compounds. However, it was determined that SA and Put applications significantly slowed down these negative changes. In particular, the SA + Put combination improved storage stability by providing the lowest weight loss and decay rate thanks to the preservation of cell membrane stability and the limitation of transpiration. Phenolic compound analyses showed that phenolic degradation is the natural process during storage, but SA and Put applications significantly slowed this process. In particular, it was determined that the combination application contributed to the preservation of antioxidant phenols by supporting phenylpropanoid metabolism, and that the highest level of phenolic stability was achieved in this group. PCA results revealed that quality degradation parameters were positively correlated with respiration rate and weight loss, whereas phenolic compounds, organic acids, and ascorbic acid showed strong positive correlations with quality preservation. Correlation analysis also supported these findings, confirming that antioxidant compounds play a decisive role in storage performance. In conclusion, it was determined that the combined application of SA and Put reduces oxidative stress, regulates metabolic activity, stabilizes phenolic metabolism, and significantly delays post-harvest quality losses in apricot fruit. This approach was found to offer an effective, feasible, and sustainable post-harvest strategy for extending shelf life and preserving nutritional quality components.
- MakaleYalnız künye2026Scopus SJRQ1MILA: An Innovative Approach to Identifying AI-Generated Content Using BERT, CNN, and BiLSTM
Utku, Anil
AI ethical principles are essential in balancing the social impacts of rapidly developing technology today. The widespread use of AI technologies has heightened the need for ethical and legal regulations in this area. In this process, fundamental principles such as data privacy, accountability, transparency, and human oversight take center stage to enhance the reliability of artificial intelligence and foster social trust. Generative AI refers to machines producing text, images, audio, and video content. However, generative AI brings ethical discussions since it can produce original content. Detecting AI-generated content is becoming increasingly complex due to the ability of AI models to produce increasingly more fluent and meaningful texts. This study created a hybrid MILA model using BERT, CNN, and BiLSTM models to detect AI-generated content. MILA was compared in detail with SVM, XGBoost, CNN, LSTM, and BiLSTM using sentence-level and article-level datasets. Experiments demonstrated that MILA outperformed the compared models, achieving 94.34% accuracy at the sentence-level and 93.62% accuracy at the article-level.
AtıfOpenAlex1İncele - MakaleAçık Erişim2025Scopus SJRQ4A Classification of N(κ)-contact Metric Manifolds with T-curvature Tensor
Ünal, İnan; Altın, Mustafa; Pandey, Shashikant
In this study, we consider various geometric conditions associated with the vanishing of a generalized curvature tensor, namely the T-tensor, on N(κ)-contact metric manifolds. We define and analyze several types of T-flatness conditions, including T-flat, ξ-T-flat, quasi-T-flat, and φ-T-flat structures. By applying these flatness conditions, we obtain algebraic constraints on the curvature parameters, particularly involving the Ricci tensor. The resulting characterizations allow for the classification of N(κ)-contact metric manifolds as either Einstein or η-Einstein, depending on the specific values of the structure constants. These investigations also lead to deeper insights into the geometric structure and local isometry types of the manifolds under study.
AtıfScopus1OpenAlex1
İncele - MakaleYalnız künye2026Scopus SJRQ2Comparative Analysis of Sequential Electrooxidation and Electrocoagulation Processes for Leachate Treatment
Ogedey, Aysenur; Oguz, Ensar
This study aims to improve the removal efficiency of chemical oxygen demand (COD), NH₃-N, and turbidity from Bingöl leachate through a sequential electrochemical process. This process includes electrooxidation (EO) with Ti/PdO-CoO anodes and stainless-steel cathodes, followed by electrocoagulation (EC) with aluminum anodes and stainless-steel cathodes. The sequential electrochemical process lasted 400 min, consisting of 360 min of EO followed by 40 min of EC process. At pH 5, COD and turbidity reached optimal removal efficiencies of 89% and 99.9%, respectively, while NH₃-N achieved 88.5% at pH 9.5. These results indicate that the sequential electrochemical process was most effective under these pH values for removing organic matter, nitrogen, and suspended solids. The sequential electrochemical process led to significant improvements in the removal efficiencies of COD, NH₃-N, and turbidity, with increases of 32.5%, 44%, and 6.9%, respectively, compared to the EO process. The sequential electrochemical process showed improvements of 9.5% in COD and NH₃-N removal, and 1.2% in turbidity removal, compared to the results of the EC process. The pseudo-first-order (PFO) reaction rates for the EO and EC processes were determined, resulting in high R2 values (0.98–0.99). Additionally, the total consumption cost of the EO process was higher than that of the EC process. After the sequential electrochemical process, the consumption cost increased from $13.586/kg COD to $24.332/kg COD as the current density increased from 15 mA/cm2 to 25 mA/cm2.
AtıfScopus1WoS1OpenAlex1İncele - MakaleYalnız künye2026Scopus SJRQ1Happiness and Psychological Well-Being Among Fathers of Young Children: Evidence From Tunceli, Turkey
Şen Montazerirad, Buket; Yeşiltepe, Akgün
Fatherhood significantly influences psychological well-being and happiness, yet fathers particularly of young children are underrepresented in research. This study examines the relationship between happiness and psychological well-being in this group. This study aims to explore the relationship between happiness and psychological well-being among fathers of children in early childhood. A descriptive-correlational study was conducted with data collected online using validated self-report questionnaires on demographic characteristics, happiness, and psychological well-being from 257 participants. A statistically significant, strong, and positive relationship was found between happiness and psychological well-being (r = 0.626, p = 0.000). Regression analysis revealed that happiness explained 39.2% of the variance in psychological well-being and was a significant predictor (R2 = 0.392). Each unit increase in psychological well-being was associated with a 0.794-unit increase in happiness (β = 0.794; p < 0.05). Fathers’ happiness is a key determinant of their psychological well-being and psychosocial interventions targeting fathers may enhance both paternal and child well-being.
- MakaleYalnız künye2026Scopus SJRQ1Exploring research themes in the Journal of Librarianship and Information Science: Insights from topic modelings
Aslan, Alper; Özyurt, Özcan
This study aims to explore research interests and trends in the journal by analyzing the entire publication history of the Journal of Library and Information Science (JoLIS) between 1969 and 2023 using Latent Dirichlet Allocation (LDA). A comprehensive topic modeling analysis was conducted on 1437 articles for which titles, abstracts and keywords were available. The research focuses on identifying key thematic shifts in the journal’s publications. The findings highlight that topics such as Information Literacy & Research and Librarian Roles & Skills are growing in importance, while traditional topics such as Cataloging & Classification are declining. The results reveal shifts in the focus of the LIS field, providing critical insights to guide future research. In particular, Information Literacy & Research emerges as a highly accelerating topic, reflecting the need for digital competencies in response to evolving information environments. Meanwhile, declining interest in Cataloging & Classification is in line with the automation of traditional library functions, shifting training priorities toward digital literacy and data management skills. By mapping the evolution of research priorities, this study serves as a valuable resource for LIS researchers and practitioners, helping them to align their work with future developments in the field.
AtıfScopus9WoS7OpenAlex11İncele - MakaleAçık Erişim2025Scopus SJRQ1Blending effects of boron carbide and lanthanum(III) oxide reinforcements on the structural, physical, mechanical, and radiation shielding properties of 316L-stainless steel composites for nuclear applications
ALMisned, Ghada; Yayla, Nihal; Albayrak, M.Gökhan; Güler, Ömer; Baykal, Duygu Sen; Alkarrani, Hessa; Tekin, H.O.
Four composite samples were fabricated, maintaining 10 % B4C and varying La2O3 content from 0 % to 20 %. X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Energy Dispersive X-ray Spectroscopy (EDX) analyses confirmed the successful incorporation of reinforcements, preserving the austenitic structure of 316L-SS. Elastic modulus calculations revealed a gradual reduction from 225.0 GPa to 215.0 GPa with increasing La2O3 due to clustering and reduced homogeneity. Gamma-ray shielding properties demonstrated significant improvements, particularly at low and intermediate photon energies, with Sample 4 with 20 % La2O3 addition, achieving a 13.6 % higher linear attenuation coefficients (LAC) at 0.015 MeV. Neutron shielding highlighted Sample 4 as one of the most effective materials, outperforming conventional alloys. This study demonstrates the potential of 316L Stainless-Steel (316L-SS) + B4C + La2O3 composites as multifunctional materials for radiation-intensive applications, offering superior attenuation and structural stability. It can be concluded that optimization of reinforcement distribution would play an important role in balancing mechanical and shielding performance in next-generation nuclear materials.
AtıfScopus5OpenAlex5İncele - MakaleAçık Erişim2026Scopus SJRQ2Antioxidant capacity and α-glucosidase inhibitor activity of Bryonia aspera extracts and its major constituent p-coumaric acid: Phytochemical analysis, biological evaluation and computational approach
Tuncay, Salih; Karasakal, Ömer Faruk; Açar, Mikail; Toptancı, İsra; Şenol, Halil; Çırak, Olgun; Işık, Mesut; Beydemir, Şükrü
This study comprehensively investigated the phenolic composition, antioxidant potential, and α-glucosidase inhibitory properties of B. aspera Steven ex Ledeb. extracts using integrated in vitro and in silico approaches. LC-MS/MS analysis identified seven major phenolic compounds, caffeic acid, chlorogenic acid, galangin, gallic acid, naringenin, p-coumaric acid, and rutin, with p-coumaric acid being the most abundant (306.71 mg/kg in aerial and 155.56 mg/kg in root extracts). Both extracts exhibited strong antioxidant and α-glucosidase inhibitory activities, particularly the aerial extract (IC50 = 0.678 and 0.173 for DPPH, ABTS, respectively and 0.022 mg/mL for α-glucosidase inhibition). Molecular docking and MM-GBSA analyses supported these findings, showing that p-coumaric acid had the strongest binding to α-glucosidase (–7.783 kcal/mol, ΔG = –47.76 kcal/mol), stabilized by key interactions with Asp-62, Arg-200, His-332, and Arg-400. A 250 ns molecular dynamics simulation confirmed the stability of the complex, and in silico ADME analysis revealed good oral absorption (67%) and compliance with Lipinski’s rule. Overall, results indicate that p-coumaric acid is the primary bioactive compound contributing to the antioxidant and α-glucosidase inhibitory activity of B. aspera, with promising potential as a natural lead for α-glucosidase inhibition.
- MakaleYalnız künye2026Scopus SJRQ4Smart logistics with a maturity assessment perspective
Göçmen Polat, Elifcan; Derse, Onur
The logistics sector is influenced by digitalisation and technological advancement in improving sustainability and efficiency. Logistics companies, which are highly capable of incorporating innovative technologies into their business flows, have made profound impacts, ultimately leading to a transformation in logistics services. In this context, this study presents the current and target maturity levels to make an international logistics company smarter and provides recommendations as an improvement road map for the logistics sector. Within the scope of this research, nine dimensions and 36 maturity items of the smart logistics (SL) concept are discussed to assess the maturity levels using the weighted maturity score calculation model (WMSC), in which evaluation of all maturity items using the capability maturity model (CMM) maturity levels and calculation of the criteria weights using fuzzy DEMATEL (F-DEMATEL) is integrated. Computational results show that warehouse management systems and material flow control systems have lower maturity levels. Thus, product picking by voice, integrating the warehouse management system, ensures real-time updates and data integration, reducing stockouts and overstock.
- MakaleAçık Erişim2026Scopus SJRQ4The microbiological and sensory quality of fish (Cyprinus carpio) meatballs prepared with different essential oils; [La calidad microbiológica y sensorial de las albóndigas de pescado (Cyprinus carpio) elaboradas con diferentes aceites esenciales]
KARATON-KUZGUN, Nermin; ȘAHÎN, Seher
In this study, the shelf life of fish meatballs made from common carp (Cyprinus carpio) and flavoured with lemon, ginger and mint essential oils was investigated under refrigeration conditions (4 ± 1 °C). In the study, fish mince obtained from common carp was mixed with breadcrumbs, cumin, salt, black pepper, allspice, garlic powder, sweet paprika and sunflower oil to form the experimental control group, whilst the remaining fish mince was mixed with essential oils to form four different groups. The fish meatballs were stored under refrigeration conditions, and microbiological and sensory analyses were conducted on the analysis days. As a result of these analyses, the shelf life of the fish meatballs was determined to be 20 days. Microbiologically, the limit value (6 log CFU/g) for total mesophilic aerobic bacteria was exceeded in Group control patty samples on the 10th day of storage, in Group ginger and mint patty samples on the 15th day, and in Group lemon patty samples on the 20th day. The evaluation of sensory analyses also revealed that the group of fish cake samples receiving the highest sensory approval was the group to which lemon essential oil had been added. It was concluded that offering fish-based meatballs created by adding essential oils which are natural additives in a variety of flavours would broaden the product range, further encourage consumption, and contribute to the shelf life of the resulting products.
- MakaleAçık Erişim2026Scopus SJRQ2Comparative Microstructural, Mechanical, and Tribological Evaluation of Cu Matrix Composites Reinforced with B4C, B, Cr, Co, Al2O3, and Graphite via Powder Metallurgy
Macit, Cevher Kursat; Gürgenç, Turan; Aksakal, Bunyamin; Aslan, Naim
Copper and its alloys are widely used in electrical, automotive, aerospace, and energy applications because of their excellent thermal and electrical conductivity. However, the low hardness and poor wear resistance of pure Cu limit its use under tribologically demanding sliding conditions. In this study, Cu matrix composites reinforced with 1 wt.% boron carbide (B4C), boron (B), chromium (Cr), cobalt (Co), alumina (Al2O3), and graphite (Gr) were fabricated by powder metallurgy and comparatively evaluated under identical processing and testing conditions. Phase constitution and microstructural characteristics were analyzed by XRD, SEM, and EDS, while mechanical and tribological behavior was assessed by Vickers hardness and dry sliding wear tests. All reinforcements improved the hardness of the Cu matrix compared with unreinforced Cu. The hardness increase followed the order Cu–B4C (68.91%) > Cu–B (66.43%) > Cu–Gr (63.97%) > Cu–Al2O3 (61.79%) > Cu–Cr (42.69%) > Cu–Co (36.04%). Dry sliding wear tests, performed under a 10 N normal load, 0.05 m s−1 sliding speed, and 1000 m sliding distance against a 316L stainless-steel ball, showed that all reinforced composites exhibited lower mass loss and more stable sliding behavior than pure Cu. Among all samples, Cu–B4C displayed the best wear performance, with a 154.8% improvement in wear resistance relative to pure Cu. SEM analysis of the worn surfaces revealed that reinforcement addition reduced severe plastic deformation, groove formation, and delamination, leading to a more stable wear regime. Graphite- and boron-containing composites benefited from interfacial lubrication and contact stabilization, whereas B4C and Al2O3 improved wear resistance through rigid-particle strengthening and enhanced load-bearing capacity. By comparing ceramic, metalloid, metallic, oxide, and solid-lubricating reinforcements at the same low addition level and under identical processing and testing conditions, this study provides a reinforcement-selection framework for Cu-based composites requiring improved hardness and dry-sliding durability.
AtıfScopus2WoS2OpenAlex2İncele - MakaleYalnız künye2025Scopus SJRQ2Comprehensive performance assessment of Bi- and Pb-based alloys for enhanced Gamma-Ray and neutron shielding applications
ALMisned, Ghada; Susoy, Gulfem; Baykal, Duygu Sen; Kilic, G.; Güler, Ömer; Tekin, H.O.
This comprehensive study investigates the radiation attenuation properties of various bismuth (Bi) and lead (Pb) based alloys, with a focus on identifying superior shielding materials for nuclear safety and industrial radiation protection. The research encompasses an in-depth analysis of seven alloys, namely GTSB5, Sn%40Bi, Bi50Sn50, A1, PbAl-4, Safe Alloy, and P1, assessing their efficacy in gamma-ray and neutron attenuation. Utilizing some computational tools, various parameters such as mass and linear attenuation coefficients, half and tenth value layer values, effective atomic and electron numbers, buildup factors, and transmission values were evaluated. Our findings highlight Alloy P1's outstanding performance, attributed to its high density (11.05 g/cm3) and optimized elemental composition, including Silver (Ag). In addition, P1 demonstrates exceptional gamma-ray attenuation across multiple energy spectra and superior neutron shielding capabilities, evidenced by its significant fast neutron removal cross-section (∑R, 0.12003 1/cm). The study revealed that the addition of Ag enhances the photon and beta particle absorption capacity, positioning P1 as a promising material in radiation shielding applications. The correlations between alloy density and gamma-ray shielding properties were particularly notable, with P1's density contributing to its enhanced attenuation capabilities. Furthermore, P1's lower half value layers (1.14469 cm) and tenth value layers (3.80256 cm) at 15 MeV indicate its efficiency in reducing radiation intensity with minimal material thickness.
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