ATÜ Kurumsal Akademik Arşivi
DSpace@ATÜ, Adana Alparslan Türkeş Bilim ve Teknoloji 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 telif haklarına uygun olarak Açık Erişime sunar.
Güncel Gönderiler
Multifunctional POSS-based nanoparticles functionalized with silver, SPIONs, and rhamnolipid for antibacterial applications
(Elsevier, 2026) Kibar, Gunes; Kafali, Melisa; Ozonuk, Olgu Cagan; Oztas, Merve; Usta, Berk; Ercan, Batur
Nano-engineered materials, particularly those featuring bio-based surface modifications, are emerging as effective tools in combating bacterial infections. In this study, polyhedral oligomeric silsesquioxane (POSS) nanoparticles were functionalized with silver nanoparticles (Ag), superparamagnetic iron oxide nanoparticles (SPIONs), and the biosurfactant rhamnolipid (RL)-either individually or in combination-to evaluate their antibacterial and antibiofilm activities against Staphylococcus aureus (S. aureus) and Pseudomonas aeruginosa (P. aeruginosa). The modified nanoparticles exhibited sizes ranging from 127 to 227 nm and demonstrated superparamagnetic behavior, offering potential for magnetic targeting. Among the various formulations, the RLcoated, silver- and SPION-decorated POSS nanoparticles (RSMP) exhibited the highest antibacterial efficacy, reducing S. aureus and P. aeruginosa colony growth by approximately 90 % and 66 %, respectively, at a concentration of 0.01 g/L. RSMP nanoparticles also showed strong biofilm inhibition and had the lowest MIC50 values. Notably, these nanoparticles supported the proliferation of human osteoblasts at concentrations up to 0.05 g/L, indicating favorable cytocompatibility. Overall, RSMP nanoparticles present a promising platform for magnetically targetable antibacterial agents, with potential applications in biomedical fields, particularly for managing orthopedic infections.
Peas, natural resources for a sustainable future: a multifaceted review of nutritional, health, environmental, and market perspectives
(Frontiers Media SA, 2026) Nikolic, Nada Cujic; Mutavski, Zorana; Savikin, Katarina; Zivkovic, Jelena; Pavlovic, Suzana; Jones, Petra; Copperstone, Claire; Aytar, Erdi Can; Aydin, Betul; Van Bavegem, Evelien; Kunili, Ibrahim Ender; Ozmen, Ozge; Kusumler, Aylin Seylam; Unal, Derya Ozalp; Gunduz, Selin; Lara, Szymon Wojciech; Akin, Meleksen; Orahovac, Amil; Balazs, Balint; Milesevic, Jelena; Sirbu, Alexandrina; Negrao, Sonia; Knez, Marija
The pea (Pisum sativum L.) is an emerging pillar in plant-based nutrition and sustainable food systems due to its high-quality proteins, diverse bioactive compounds, and agroecological benefits. This review provides an updated synthesis of the nutritional composition, health-promoting properties, and environmental relevance of peas, emphasizing recent scientific findings. Pea seeds typically contain 20%-40% protein, 45%-55% starch, and 10%-15% dietary fiber, alongside essential micronutrients such as vitamin C (40-60 mg/100 g), folate (60-70 mu g/100 g), vitamin K (30-45 mu g/100 g), iron (1.5-2.0 mg/100 g), and manganese (0.4-0.6 mg/100 g). Their storage proteins, primarily legumin and vicilin, offer high digestibility and amino acid profiles compatible with human requirements, supporting their rapidly growing use in protein isolates and meat- and dairy-alternative products. Peas represent a valuable source of phenolic acids, flavonoids, and saponins, which contribute to notable antioxidant (50-120 mu mol Trolox/g) and anti-inflammatory activities demonstrated in preclinical studies. Compared with other legumes, peas exhibit a lower glycemic index (35-45), making them suitable for metabolic health applications. Agronomically, pea cultivation enhances soil fertility through biological nitrogen fixation (up to 150 kg N/ha), supporting reduced fertilizer inputs and improved crop rotation performance, aligning with circular economy and climate-resilience strategies. Despite these advantages, global consumption and breeding innovation remain insufficient to meet the rising demand for alternative proteins. Future opportunities include improving protein extraction technologies, valorizing processing side-streams, and exploring underutilized phytochemicals to strengthen the nutritional and sustainability profile of pea-based food systems.
Corporate social responsibility and idiosyncratic volatility: a dynamic approach with environmental, social and governance considerations
(Emerald Group Publishing Ltd, 2026) Pirgaip, Burak; Doruk, Omer Tugsal; Ertugrul, Hasan Murat; Barak, Ahmet Yasir
PurposeThis study aims to examine the dynamic relationship between corporate social responsibility (CSR), environmental, social and governance (ESG) performance and environment-based executive compensation (EBEP) and firm-specific risk, by providing an integrated analysis of all three sustainability dimensions and their differentiated temporal effects on idiosyncratic volatility (IVOL).Design/methodology/approachThe analysis uses a dataset of S&P 500 nonfinancial firms covering the period from 1983 to 2024. To capture the short- and long-term dynamics between sustainability-related variables and IVOL, the study uses the local projections (LP) method, which allows flexible estimation of impulse response functions without imposing dynamic restrictions. Our empirical setting also accounts for endogeneity by incorporating the Generalized Method of Moments (GMM) analysis into the LP framework.FindingsThe results show that CSR engagement reduces IVOL, especially in the medium term. ESG helps reduce risk as these practices become institutionalized. EBEP triggers short-term volatility, but it ultimately leads to persistent risk reduction. Robustness tests confirm these dynamics. Notably, the interaction between EBEP and CSR leads to a pronounced and persistent reduction in IVOL.Originality/valueThis study addresses a gap in the literature by uncovering the differentiated and time-varying effects of sustainability strategies on firm-specific risk, an underexplored area. It also introduces EBEP as a novel governance mechanism and demonstrates its synergistic effect with CSR in sustaining long-term risk reduction. Methodologically, the use of LP, along with a GMM-based analysis, provides a flexible and forward-looking estimation of risk trajectories and a valuable guidance to balance sustainability with risk management.
XAI-CF - Examining the role of explainable artificial intelligence in cyber forensics
(Pergamon-Elsevier Science Ltd, 2026) Alam, Shahid; Altiparmak, Zeynep
With the rise of complex cyber devices, Cyber Forensics (CF) is facing numerous new challenges. For instance, many systems are operating on smartphones, each hosting millions of downloadable applications. Analyzing this vast amount of data and making sense of it requires innovative techniques, particularly those from Artificial Intelligence (AI). To successfully implement these techniques in CF, it is essential to justify and explain the results to CF stakeholders. This will enable informed decision-making and foster trust in AI systems. An explainable AI (XAI) system can fulfill this role in CF, and we refer to this system as XAI-CF. Although XAI-CF is crucial, it is still in its early stages of development. Thus, there is a need to investigate and advocate for the importance and benefits of XAI-CF. Furthermore, previous studies do not provide a comprehensive survey of XAI's role in CF. Many only briefly address the challenges and ways to enhance XAI for this field, and none have proposed a unified framework for an XAI-CF system. To address these research gaps, this paper discusses the key requirements and prerequisites for an XAI-CF system. We present a thorough literature review of prior works that apply and utilize XAI to build and enhance trust in CF. In addition to discussing the challenges faced by XAI-CF and offering concrete solutions, we introduce the first XAI-CF framework that cohesively integrates XAI principles across every stage of the CF lifecycle. We believe that our work provides a solid foundation for future researchers interested in XAI-CF.
Polyacrylonitrile nanofibers with hollow NiCu, Ni, and Cu nanospheres: Boosting electrocatalysis via enhanced interfacial charge transport and storage
(Elsevier, 2026) Sarac, Baran; Karazehir, Tolga; Zadorozhnyy, Vladislav; Moskovskikh, Dmitry; Yermekova, Zhanna; Gumrukcu, Selin; Yuce, Eray; Sarac, A. Sezai
Multifunctional catalytic materials combining polymers with nanoparticles (NPs) lie in advancing their long-term stability, scalability, and predictable performance under real-world operating conditions. In this study, polyacrylonitrile (PAN) nanofibers loaded with hollow nickel (Ni), copper (Cu), and nickel-copper (NiCu) nanoparticles were fabricated. X-ray diffraction confirmed crystalline metal phases in the amorphous PAN matrix while indicating that similar to 25 % of Cu as CuO. Spectroscopic analysis revealed alterations in the nitrile and aliphatic stretching bands resulting from NP incorporation. Cu/PAN exhibited a more than twofold increase in the -C-H to -CN bond area, attributed to oxygen-containing functional groups from CuO formation. UV-Vis spectra demonstrated tunable absorbance: NiCu/PAN exhibited the broadest and most intense absorption across 250-500 nm, reflecting strong plasmonic coupling between alloyed particles. Electron microscopy illustrated uniform dispersion of NPs on PAN surface, with all three nanofibers showing continuous and bead-free morphology, while NiCu composites displayed reduced NP agglomeration compared to monometallic counterparts. Electrochemical impedance spectroscopy in 0.1 M LiClO4/ACN highlighted that NiCu/PAN possessed the lowest charge transfer resistance (R-ct approximate to 9.13 x 10(2) Omega cm(2)) and highest double-layer capacitance (C-dl approximate to 43.6 mu F cm(-2)), surpassing Ni/PAN and Cu/PAN analogues. Furthermore, the smallest overpotential at 1 mA cm(-2) (-197 mV) and Tafel curve (similar to 286 mV dec(-1)) were obtained for NiCu/PAN in 1 M KOH. The main objective of this research was to demonstrate that bimetallic interactions in hollow NiCu particles synergistically enhance interfacial charge transport and storage, thereby showing how metal composition and PAN nanofiber integration can optimize polymer-based nanocomposites for energy and environmental applications.
