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KENT KİMLİĞİNİ YANSITACAK VE İKLİM DEĞİŞİKLİĞİNE UYUM SAĞLAYABİLECEK ODUNSU BİTKİLER: ANTALYA
No full text“ÖYKÜLEYİCİ DİNLEME” ÜZERİNE AMPİRİK BİR ÇALIŞMA: R. SCHUMANN OP. 68 İLK KAYIP
No full textSözsüz müzik eserlerini dinlerken bireylerin zihinlerinde öyküler oluşturması, özellikle uluslararası literatürde güncel ve ilgi çekici bir konudur. “Narrative Listening” olarak kavramsallaştırılan bu dinleme biçimi, araştırmamız kapsamında “Öyküleyici Dinleme” olarak Türkçeleştirilmiştir. Bu çalışma, Romantik dönem bestecisi Robert Schumann'ın “İlk Kayıp” isimli, karakter parçası türündeki eserini öyküleyici dinleme açısından incelemeyi amaçlamıştır.Temel araştırma sorusu, “Dinleyicilerin oluşturduğu anlatılar, öyküleyici dinlemenin unsurları (kişi, durum/olay, ortam/bağlam canlanması) açısından nasıl değişmektedir?” şeklinde belirlenmiştir. Açık uçlu soruya verilen dinleyici yanıtları, içerik analizi yönteminin nicel ve nitel boyutlarıyla analiz edilmiştir. İçerik analizinin nicel boyutunda kelime ve frekans sıklıklarına yer verilmiştir. Nitel boyutunda ise dinleyici yanıtları öyküleyici dinlemenin unsurunu oluşturan üç kategori açısından kodlanarak gruplar arası (müzik bölümünde okuyanlar ve diğer) karşılaştırmalı olarak analiz edilmiş ve kelime bulutlarıyla görselleştirilmiştir. Bununla beraber dinleyici yanıtları doğrudan alıntılarla sunulmuştur. Çalışma sonucunda öyküleyici dinlemenin müzik eğitiminden bağımsız bir müziği anlamlandırma stratejisi olduğu tespit edilmiştir. Dinleyicilerin oluşturdukları anlatılarda kişi kategorisinde belirgin benzerlikler, durum/olay kategorisinde farklılıklar ve ortam/bağlam kategorisinde ise belirgin farklılıklar olduğu gözlemlenmiştir. Bu araştırma, uluslararası literatürün merceğindeki öyküleyici dinlemeye odaklanarak, karakter parçası türüyle bu dinleme biçimini ilişkilendiren öncü bir çalışma olmayı hedeflemektedir. Sosyal bilimler ve müzik bilimleri alanlarına interdisipliner yeni bir bakış açısı sunarak gelecekteki ampirik çalışmalara zemin sunmaktadır.Creating stories while listening to instrumental music is a current and engaging international research topic. Thisform of listening, conceptualized as "Narrative Listening," has been translated as "Öyküleyici Dinleme" in Turkishfor the purposes of our research. This study aimed to examine Robert Schumann's Romantic-era character piece,"First Loss," from the perspective of narrative listening.The main research question was: "How do the narratives created by listeners vary in terms of the elements ofnarrative listening (person, situation/event, setting/context)?” The listener responses to the open-endedquestion were analyzed using the quantitative and qualitative dimensions of the content analysis method. In thequantitative dimension of the content analysis, word and frequency counts were included. In the qualitativedimension, listener responses were coded and grouped into three categories that form the elements of narrativelistening. They were then analyzed comparatively between groups (those studying in the music department and others) and visualized with word clouds. Furthermore, direct quotations from the listener responses werepresented. It was concluded from the study that narrative listening is a music-meaning-making strategyindependent of music education.Findings revealed similarities in the person category, but distinct differences in situation/event and particularlyin setting/context evocation. This pioneering research links narrative listening with the character piece genre,providing an interdisciplinary framework for future empirical studies in social and music sciences. </p
KENT KİMLİĞİNİ YANSITACAK VE İKLİM DEĞİŞİKLİĞİNE UYUM SAĞLAYABİLECEK ODUNSU BİTKİLER: DÜZCE
No full textMagnesium-waste for as a green hydro-reactive material in hydrogen production: Modification, hydrolysis, cost and environmental impact assessment
No full textIn this study, waste magnesium (Mg) chips as a green hydro-reactive material in hydrogen production evaluated by modification, hydrolysis, cost, and environmental impact assessment. Mg chips modified via ball milling or mixing with additives such as sodium formate (SF), formic acid (FA), and acetic acid (AA) and tested through controlled hydrolysis experiments. Mg-based hydro-reactive materials coded as M−9 modified by ball-milling with FA and mixing with AA showed improved hydrogen production rate up to 4000 mL H2 min−1 g−1 and yield of 900 mL H2 g−1. Furthermore, a detailed environmental impact and cost assessment performed to evaluate the feasibility of proposed system as green and economically viable route for hydrogen production. The green modification procedure of M − 9 had 12.32 MJ kg−1, 1.66 kg CO2 kg−1, 59.29 kg CO2eq kg−1 of environmental impact assessment of process values and greenness index of 0.73
Comparative Monte Carlo study of transparent protective layers for beta radiation attenuation in betavoltaic applications
No full textThis study investigates the beta radiation shielding and transmission performance of transparent polymers and glasses used as protective layers in commercial p-i-n diodes for betavoltaic systems. To the best of our knowledge, this study presents the first comprehensive application of the Half Absorption Thickness (HAT) metric to transparent polymers and glasses, providing a novel quantitative parameter for optimizing beta shielding performance. MCNP6.2 simulations were performed for seven beta sources (3H, 63Ni, 14C, 147Pm, 90Sr, 90Y, 99Tc) and five materials (PMMA, SMMA, PC, Pyrex, glass) over nanometer-millimeter thicknesses. Transmission strongly depended on material type and source energy; glass attenuated 94 % of 3H at sub-micron thickness, while PC transmitted over 30 %. The Half Absorption Thickness (HAT) metric revealed nanoscale attenuation differences, such as 600 nm in PC. Logarithmic regression models (R2 > 0.99) allow rapid performance estimation, providing a quantitative basis for material selection in betavoltaic batteries, medical diagnostics, aerospace sensors, and radiation-hardened electronics
The experimental and numerical investigation of flow behavior in an additive manufactured setup with PWM control
No full textThis study investigates the effects of different perforated plates on internal flow behavior and energy losses of amini centrifugal fan operating within an additively manufactured air duct. The fan was driven by a PWM (pulsewidth modulation) controller to regulate rotational speed, and both experimental and numerical analyses wereperformed across a PWM duty cycle range from 10 % to 100 %. The objective was to evaluate how coverresistance influences vortex formation, turbulence dissipation, and total pressure drop. Dimensionless Q-criterion(Q*) contours revealed that increasing resistance intensified the vortical regions and enhanced energy dissipation, HRC exhibits 15.5 % higher vortex volume than MRC, while MRC shows 80.1 % higher vortex volume thanLRC. Similarly, the dimensionless turbulence dissipation rate (ε*) indicated that high-resistance configurationscaused the dissipation zones to extend farther downstream behind the tubes. The dimensionless velocity (v*)contours showed that lower resistances led to more uniform flow, while higher resistances produced pronouncedjet-like and heterogeneous velocity distributions. Vorticity analysis confirmed stronger rotational structuresunder increased resistance conditions. Overall, the results demonstrate that, in the additively manufacturedsetup, increasing cover resistance amplifies turbulence intensity and vortex activity, leading to higher energylosses and greater total pressure drop.</p
Ensuring physicomechanical performance and sustainability in alkali-activated mortars in cold weather regions with ohmic curing method
No full textPhotophysicochemical and aggregation studies of highly soluble Zn(II) and Mg(II) phthalocyanine compounds based on Tinuvin-326
No full textIn this work, tetra-substituted Zn(II) and Mg(II) phthalocyanine compounds with 2-(5‑chloro-2-benzotriazolyl)-6-tertbutyl-p-cresol (Tinuvin-326) groups were synthesized for the first time and their usability as photosensitizers in photodynamic therapy applications was examined. Zn(II)-containing (ZnPc) and Mg(II)-containing (MgPc) phthalocyanine compounds based on 2-(5‑chloro-2-benzotriazolyl)-6-tertbutyl-p-cresoldicyanobenzene were produced. ZnPc and MgPc compounds exhibit excellent solubility in dimethyl sulfoxide (DMSO), dimethyl formamide (DMF), tetrahydrofuran, acetonitrile, chloroform, dichloromethane, diethyl ether, ethyl acetate, ethanol, methanol and toluene solvents. The aggregation and photophysicochemical behavior of both phthalocyanine compounds were studied in DMSO and DMF solvents. The data collected indicate that both phthalocyanine compounds may be candidate photosensitizers for PDT applications
Structural and optical behavior of Ca- and Ba-doped Cu<sub>3</sub>SbS<sub>3</sub> thin films under beta irradiation for radioluminescent nuclear battery applications
No full textThis study demonstrates a highly radiation-tolerant Cu3SbS3 thin film system engineered through a preemptive, atomic-scale lattice-strain-compensation strategy. Synthesized via a scalable, low-temperature sol-gel method, Ca:Ba co-doped films were exposed to a 100 Gy accelerated aging dose of beta irradiation. Quantitative Rietveld analysis of X-ray diffraction data revealed that the co-doped films maintained exceptional structural integrity, exhibiting a minimal crystallinity loss of only 1.49 % compared to an 8.31 % loss in undoped films. This stability was achieved by effectively suppressing the primary radiation-induced degradation pathways, including phase segregation and amorphization, which were prevalent in the undoped material. This structural resilience was mirrored by the film's optical properties, with the co-doped material's band gap narrowing by 16 % (1.58 eV-1.33 eV), in contrast to the 35 % reduction (1.68 eV-1.10 eV) observed in its counterpart. These findings validate preemptive, atomic-scale lattice-strain-compensation, confirmed by the restoration of the host lattice parameter through the opposing strain fields of Ca2+ and Ba2+ ions. This rational design principle establishes Ca:Ba co-doped Cu3SbS3 as a non-toxic, intrinsically radiation-hardened candidate for next-generation applications such as radioluminescent nuclear batteries and space electronics