Recep Tayyip Erdoğan Üniversitesi Kurumsal Akademik Arşivi
DSpace@RTEÜ, Recep Tayyip Erdoğan 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 yayınların etkisini artırmak için telif haklarına uygun olarak Açık Erişime sunar.
Güncel Gönderiler
Clinical outcomes of adjuvant treatment strategies in locally advanced gastroesophageal and gastric adenocarcinoma with poor pathological response to neoadjuvant FLOT: A Turkish Oncology Group (TOG) study.
(Lippincott Williams and Wilkins, 2026) Çiftçi, Atilla; Kutlu, Özlem; Canaslan, Kübra; Eroğlu, İmdat; Yıldızhan, Sezin; Aydın, Esra; Sütçüoğlu, Osman
......
Denominator bias in MENA MASLD epidemiology: A call for decision-grade surveillance
(Wolters Kluwer Medknow, 2026) El-Kassas, Mohamed; AlNaamani, Khalid M.; Sanai, Faisal M.; Yılmaz, Yusuf Nadir; Labidi, Asma; Mohammed, Mohammed O.; Alswat, Khalid A.
Metabolic dysfunction-associated steatotic liver disease (MASLD) is highly prevalent in the Middle East and North Africa (MENA) region, yet published estimates of prevalence and outcomes remain uncertain because the underlying denominators are inconsistently defined. This perspective argues that MENA MASLD epidemiology is systematically biased by three interacting mechanisms: distorted sampling frames, referral pathway selection, and structural undercapture of rural and displaced populations. Much of the current evidence is derived from convenience cohorts concentrated in urban, tertiary care settings where diagnostic availability and follow-up are greater than in the general population, leading to directional rather than random error. In parallel, risk stratification pathways that rely on two-step testing can funnel case detection toward specialty rich settings, overrepresenting advanced disease while missing earlier stages managed outside hepatology services. MASLD nomenclature change and incomplete alignment of coding and clinical documentation may further introduce artefactual inflection points that complicate trend interpretation. We highlight how underdiagnosis and under-recording in primary care propagate bias across downstream estimates and how validation of administrative algorithms and text-based ascertainment can quantify hidden disease reservoirs within routine data systems. Building on regional priority settings, we propose denominator-focused actions: probability-based sampling embedded in noncommunicable disease surveys; purposeful inclusion of rural and displaced groups; linkable data across primary care, laboratories, hospitals, and mortality registries; and harmonized coding and terminology. By decision-grade denominators, we refer to population denominators that are sufficiently representative, transparent, and linkable to support national surveillance, resource allocation, and trial-readiness decisions.
Electronic, magnetic, optical, and thermoelectric properties of K2OsCl6 for spintronic and energy harvesting applications
(Nature Portfolio, 2026) Elkenany, Elkenany Brens; Fatmi, M.; Yaylacı, Murat; Albargi, Hasan B.; Smerat, Aseel; Dhahri, Ramzi; Abdelghany, A. M.
We report a comprehensive first-principles study of the structural, electronic, magnetic, optical, and thermoelectric properties of the double perovskite K2OsCl6 using density functional theory (DFT) within the generalized gradient approximation (GGA). The calculations predict a ferromagnetic ground state with a total magnetic moment of similar to 1.99 mu B per formula unit, largely arising from Os atoms (similar to 1.33 mu B). Spin-resolved electronic band structures reveal robust half-metallicity, featuring a metallic majority-spin channel and a direct minority-spin band gap of similar to 0.8 eV, yielding nearly 100% spin polarization at the Fermi level. The optimized lattice constant of 10.45 angstrom shows excellent agreement with experimental data. Optical analysis demonstrates strong spin-dependent behavior in the visible and ultraviolet regions, with a peak absorption coefficient of similar to 1.5 x 10(5) cm(-1) at 6 eV and static dielectric constants of 4.2 (spin-up) and 3.8 (spin-down). The refractive index exhibits anomalous dispersion, reaching refractive index values up to 2.8 in the visible range. Thermoelectric calculations indicate a Seebeck coefficient of similar to 180 mu V/K at 900 K, electrical conductivity of 4.5 x 10(5) Omega(-1) m(-1), and low thermal conductivity of 2.8 W m(-1) K-1 at room temperature.
Restoring soil functionality and improving wheat yield through integrated farmyard manure, compost, crop residues and decomposition enhancers
(BMC, 2026) Kalim, Muhammad; Khan, Maaz; Ahmad, Haris; Ali, Mehran; Aslam, Sab; Altaf, Muhammad Tanveer; Jan, Muhammad Faheem; Liaqat, Waqas
BackgroundWheat productivity is frequently constrained by the slow turnover of soil organic matter (OM), which limits nutrient mineralization and reduces their bioavailability to plants. In this context, the present study was conducted to assess the effects of different OM sources on wheat growth, phenological attributes, yield attributes, chlorophyll content and soil physicochemical properties, with a focus on improving sustainable nutrient management strategies for improving wheat productivity and soil health.ResultsA field experiment was conducted over two consecutive winter seasons (2022-2023 and 2023-2024) at The University of Agriculture, Peshawar-Pakistan. The experimental design comprised two factors: (i) OM sources supplying 120 kg N/ha, including no residue (control), farmyard manure (FYM), compost, and wheat crop residues; and (ii) decomposition-enhancing materials (DM), namely control, Bio-organic phosphate (100 kg/ha), Bio-aab at the rate of 25 L ha- 1 (microbial biofertilizer), and humic acid at the rate of 15 kg ha- 1 was applied as leonardite-derived granular humic acid containing 70% humic substances. OM along with DM were incorporated into the soil 7 days before sowing under optimal field moisture conditions using a field cultivator. Wheat cultivar 'Pirsabak 2015' was sown at a seed rate of 120 kg/ha. Experiment was arranged in a RCB design with three replications. Individual plots measured 3 & times; 5 m and consisted of 10 rows with 30 cm inter-row spacing. The incorporation of OM delayed phenological development relative to the no-residue control. Among the tested treatments, FYM and compost consistently resulted in greater plant height (86.32 and 86.38 cm), spike density (236 and 239 m- 2), grains number (45 and 45), grain weight (41.94 and 41.47 g), biological yield (10385 and 10385 kg ha- 1), grain yield (2977 and 2998 kg ha- 1), and chlorophyll content (chlorophyll a: 23.37 and 23.07; chlorophyll b 44.74 and 45.59; and total chlorophyll: 68.66 and 68.88). Among DM, humic acid improved wheat growth traits, including plant height (87 cm), spikes m- 2 (245), grains spike- 1 (46), grain weight (43 g), biological yield (10452 kg ha- 1), grain yield (3013 kg ha- 1) and chlorophyll content, compared with other treatments, resulting in better biomass accumulation. Regarding soil fertility, Bio-aab or Bio-organic phosphate combined with FYM or compost increased soil mineral nitrogen, organic matter, total nitrogen and organic carbon. The highest net income in economic analysis (279415 ha- 1) was recorded in FYM + humic acid treatment. The highest value cost ratio (VCR) was observed in no residue + humic acid, followed by FYM + Bio-aab and FYM + humic acid.ConclusionAcross both seasons, the combination of FYM and compost with humic acid improved crop growth and yield, while untreated plots recorded the lowest values. Integrated application of FYM or compost with humic acid, Bio-aab or Bio-organic phosphate is recommended to enhance wheat productivity and improve soil fertility under semi-arid conditions.
The feminist political economy of agricultural mechanization: tea harvesting machines and women's work in turkey's black sea region
(Pergamon-Elsevier, 2026) Karaçimen, Elif; Yaman, Melda
Tea harvesting in Rize, located in Turkey's Black Sea region, where around 65% of the country's tea is produced, offers an important vantage point for understanding how mechanisation unfolds in feminised smallholder agriculture. Despite widespread promotion of agricultural machinery as a labour-saving solution, little is known about its gendered consequences in contexts where production depends heavily on unpaid family labour. This article examines the recent introduction of tea-harvesting machines in smallholder farms in Rize, drawing on extensive fieldwork to analyse how mechanisation reshapes women's work and intra-household power relations. In this setting, the adoption of harvesting machines emerged primarily as a pragmatic household response to labour scarcity and mounting pressures of social reproduction, rather than as a strategy of commercial modernisation. The analysis highlights two key gendered consequences of mechanisation. First, mechanisation reorganises rather than reduces women's labour, devaluing women's embodied knowledge and practices while rendering their contributions less visible within measures of productivity. Second, mechanisation diminishes women's embodied authority over selective harvesting, as machine-based cutting sidelines the sensory judgement and care-based practices that previously anchored their expertise. Finally, the adoption of machines emerged not as a step toward commercial modernisation but as a household response to labour scarcity and a deepening crisis of social reproduction. By integrating feminist technology studies with Marxist feminist agrarian political economy, the article demonstrates that mechanisation in Rize is a gendered socio-technical process that reconfigures labour, skill, and authority within petty commodity production. This challenges assumptions of neutral, labour-saving technological progress and highlights the need to situate agricultural innovation within the intertwined dynamics of gender, ecology, and social reproduction.
