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.
İndekslere Göre Dağılım
Yıllara Göre Dağılım
Türlere Göre Dağılım
Güncel Gönderiler
Öğe Türü: Yayın , Converting pine cone into functional nanomaterials: Glutamic acid-assisted synthesis of carbon dots for sensitive monitoring of iron Ions in environmental waters(SPRINGER INT PUBL AG, 2026) Toprak, Yunus Emre; Gülsoy, Sezgin Koray; Pekgözlü, Ayben Kılıç; Çubuk, Soner; Özgürlük, Özge; Kalkan, Elanur; Kahraman, Memet Vezir; Pekgözlü, Ayben Kılıç; Kalkan, Elanur; Gülsoy, Sezgin Koray; Orman Fakültesi, Orman Endüstri Mühendisliği BölümüIn this work, carbon quantum dots (CQDs) were fabricated through a straightforward, green, one-pot hydrothermal route, employing Pine cone as a renewable carbon precursor and L-glutamic acid as a co-dopant. Comprehensive characterization via STEM, XRD, and FT-IR revealed that the resulting CQDs exhibited a quasi-spherical shape, narrow size dispersion, and a high density of oxygen- and nitrogen-rich surface moieties. Optical evaluations confirmed robust, excitation-dependent photoluminescence with a characteristic band gap of 2.45 eV. These CQDs served as an exceptionally selective fluorescent sensor for Fe3+ detection, operating on the principle of efficient fluorescence quenching. At an optimal pH of 7.0, the probe exhibited a strong linear correlation (R2 = 0.9978) across a range of Fe3⁺ concentrations, with an exceptionally low limit of detection (LOD) of 2.37 × 10–8 mol L−1. Selectivity assays further demonstrated that the sensor effectively distinguished Fe3+ even in the presence of competing metal ions. The practical utility of the proposed method was verified using tap water, lake water, and certified materials (NASS-5 and SM-WW1), yielding high precision with recoveries between 101.2% and 104.4% (RSD < 3.7%). This study highlights biomass-based CQDs as a sustainable and efficient tool for monitoring heavy metals in complex environmental matrices.Öğe Türü: Yayın , Comprehensive review of PCM-integrated 3D concrete printing for thermal energy storage: A roadmap towards energy-adaptive and net-zero energy buildings(Elsevier Ltd, 2027) Jawadi, Iqbal; Gençel, Osman; Sarı, Ahmet; Ali, Md. Hazrat; Memon, Shazim Ali; Gençel, Osman; Mühendislik Mimarlık ve Tasarım Fakültesi, İnşaat Mühendisliği BölümüPhase change material-integrated three-dimensional concrete printing (PCM-3DCP) represents an emerging class of additively manufactured structural thermal energy storage materials designed to enable distributed, passive energy management in the built environment. By embedding latent heat storage within architected cementitious matrices, PCM-3DCP systems function as load-shifting thermal batteries that enhance energy flexibility, reduce peak demand, and improve indoor thermal stability without reliance on active mechanical systems. The convergence of nonlinear phase-change thermodynamics with anisotropic, layer-wise printed microstructures introduces complex multiscale heat-transfer and thermo-mechanical coupling effects that remain insufficiently understood, limiting predictive design and large-scale deployment. This review consolidates a fragmented cross-disciplinary synthesis of PCM-3DCP composite advances from materials to performance to provide a unified body of knowledge and identifies relationships between structure-process-property-performance levels to promote PCM-3DCP global adoption & scaling up. Additionally, it proposes a novel strategic framework linking PCM-3DCP innovation, application, and performance with United Nations Sustainable Development Goals (UN-SDGs), positioning it as an efficient pathway towards net-zero, low-carbon, multifunctional building envelopes that integrate structural capacity with active thermal regulation through architected latent heat storage. Furthermore, an extrusion-based mixture design strategic framework is presented alongside quantitative performance metrics to evaluate lifecycle, thermal properties & thermal energy gains, durability, and economic feasibility of PCM-3DCP composites. Finally, the work positions PCM-3DCP within the broader context of energy transition and decarbonization pathways, outlining current challenges and future research directions toward programmable, climate-responsive structural energy storage systems that support net-zero and resilient infrastructure.Öğe Türü: Yayın , Building a house here isn’t like building a house in Minecraft”: exploring children’s experiences of forest bathing activities(PERGAMON-ELSEVIER SCIENCE LTD, 2026) Büyükşahin, Yasemin; Kurt, Aylin; Kurt, Aylin; Büyükşahin, Yasemin; Eğitim Fakültesi, Temel Eğitim Bölümü; Sağlık Bilimleri Fakültesi, Hemşirelik BölümüIndividuals are becoming increasingly isolated due to advancing technology and changing habits. Spending extended periods indoors and limited contact with natural environments have been associated with challenges in children's physical, cognitive, social, and emotional development. Accordingly, various nature-based practices have been introduced to encourage human-nature interactions. Forest bathing, or "Shinrin-yoku," represents one such practice and serves as the focus of this study. This study aims to explore children's experiences, perceptions, and meanings associated with their participation in forest bathing activities conducted once a week over a five-week period. Conducted as a qualitative study, data were collected using the semi-structured interview technique. Data were gathered through semi-structured interviews with 16 of the 30 participating children and analyzed using the thematic analysis method. In this study, five main themes and related sub-themes emerged from the analysis of interviews conducted to understand the experiences of children participating in forest bathing activities. The themes resulting from the thematic analysis focused on children's emotional responses, questioning of digital environments, social interactions, the bonds established with nature, and learning processes. The analysis results suggest that experiences in nature are not confined to physical activity and play; they also appear to be associated with children's emotional, cognitive, and social experiences.Öğe Türü: Yayın , Bimetallic Ru-Pd nanoparticles Anchored on carbon nanotubes for high-performance electrochemical detection of tryptophan: Experimental and DFT insights(2026) Arıcı, Ömrüye Özok; Najri, Bassam A.; Kavak, Emrah; Çağlar, Aykut; Kıvrak, Arif; Kıvrak, Hilal; Çağlar, Aykut; Mühendislik Mimarlık ve Tasarım Fakültesi, Temel Bilimler Bölümü BölümüA highly sensitive electrochemical sensor for the determination of tryptophan was developed using a bimetallic ruthenium–palladium catalyst supported on carbon nanotubes (Ru–Pd/CNT). The Ru–Pd/CNT nanocomposite was synthesized via a sodium borohydride (NaBH4) reduction method, enabling the uniform deposition of Ru and Pd nanoparticles onto the CNT surface. Comprehensive physicochemical characterization using X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), inductively coupled plasma mass spectrometry (ICP-MS), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and temperature-programmed techniques confirmed the successful formation of a well-dispersed bimetallic system with strong metal–support interactions and mixed oxidation states. The Ru–Pd/CNT catalyst was used to modify a glassy carbon electrode (Ru–Pd/CNT@GCE) and was evaluated as an electrochemical sensor for tryptophan using cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS). The modified electrode exhibited strong electrocatalytic activity toward tryptophan oxidation and provided a large linear dynamic range (LDR) of 1–1200 μM, a low limit of detection (LOD) of 0.05 μM, and a sensitivity of 0.0023 A M–1. Density functional theory (DFT) calculations provided theoretical insight into the enhanced sensing performance. Comparative DFT calculations for CNT, Pd/CNT, Ru/CNT, and Ru–Pd/CNT showed that the HOMO–LUMO energy gap followed the order CNT > Pd/CNT > Ru/CNT > Ru–Pd/CNT, decreasing from 7.498 eV for pristine CNT to 0.466 eV for Ru–Pd/CNT. This trend indicates enhanced electronic activation and improved charge-transfer potential in the bimetallic Ru–Pd/CNT system. Molecular electrostatic potential (MEP), electron localization function (ELF), and localized orbital locator (LOL) analyses also indicated favorable electron redistribution and balanced localization–delocalization behavior at the metal–CNT interface. Based on the combined experimental and theoretical results, the Ru–Pd/CNT@GCE sensor represents a promising platform for sensitive and selective tryptophan detection under controlled analytical conditions.Öğe Türü: Yayın , Between survival and sacrifice: Marital experiences of patients undergoing hemodialysis(Wiley-Blackwell Publishing Ltd, 2026) Çakmak, Seher; Karataş, Hicran; Karataş, Hicran; İnsan ve Toplum Bilimleri Fakültesi, Sosyoloji BölümüThe study aimed to explore the lived experiences of married dialysis patients on the national organ waiting list, focusing on the interplay between illness, familial roles, and societal norms. This research is a qualitative study using semi-structured interviews and participant observation. The study involved 23 marriage-experienced hemodialysis-dependent patients (13 women, 10 men) on the national organ waiting list, recruited between August 16 and November 11, 2022. Data were collected through interviews and observations and were analyzed thematically to identify recurring patterns. Chronic kidney disease (CKD) poses significant physical, psychological, and social burdens, particularly for hemodialysis-dependent patients. Five main themes emerged from this study: (1) When Care Becomes a Test, (2) Dealing with Social Isolation, (3) Sacrifices to Sustain the Marriage, (4) Uninvited voices, (5) Resentful but Thankful. These findings highlight the need for family-centered care that considers diverse family structures and social contexts, while also demonstrating the impact of prolonged hemodialysis (HD) and marital strain on emotional and sexual intimacy.
