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- MakaleYalnız künye2026Scopus SJRQ1Classification and detection of Salmonella, Escherichia coli O157:H7, and Listeria monocytogenes using Fourier-transform near infrared spectroscopy coupled with machine learning
Ozturk, Samet; Huang, Lihan; Hwang, Cheng-An; Sheen, Shiowshuh
This study was conducted to investigate the potential use of Fourier-transform near-infrared (FT-NIR) spectroscopy combined with machine learning (ML) algorithms to accurately identify three foodborne pathogens, including Salmonella spp., Listeria monocytogenes, and Escherichia coli O157:H7. Each bacterial strain (two per pathogen) was individually cultured and purified through sequential washing using ethanol–deionized (DI) water solutions. Each purified culture was transferred into each well of a 96-well cell plate covered with custom-cut filter paper and then vacuum dried at 50 °C under 20 kPa for 1 h. The absorbance spectra of dehydrated bacterial cells were then acquired across the range of 1000–2400 nm using a diffuse reflectance probe connected to a FT-NIR process analyzer. To identify the optimal classification pipeline, the acquired spectra were analyzed using ten different pre-processing methods, three feature selection methods, and supervised algorithms including partial least squares discriminant analysis (PLS-DA), support vector machine (SVM), random forest (RF), artificial neural network (ANN), and convolutional neural network (CNN). Furthermore, the accuracy of the developed ML pipelines was further enhanced through under-sampling and boosting steps. The results demonstrated that SVM, RF, ANN and CNN outperformed PLS-DA, where the classification accuracies were above 90%. The findings demonstrate that using Savitzky-Golay first derivative (SG1) filtering to pre-process the full spectra followed by SVM classification yielded the highest accuracy, achieving 95.3% overall accuracy in ML pipeline. This study highlights the powerful capability of FT-NIR spectroscopy coupled with ML algorithms to detect and identify foodborne pathogens on dehydrated surfaces in process environments.
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İncele - MakaleYalnız künye2026Scopus SJRQ1Effects of dual and single spark plug configurations on energy, exergy, and exhaust emissions in a spark ignition engine
Altın, İsmail; Bayraktar, Hakan; Sezer, İsmet
Effects of dual spark plug (DSP) operation in a spark ignition (SI) engine on energy, exergy, and exhaust emissions are numerically investigated in this study. A quasi–dimensional SI engine cycle model is used for the analyses. The practical correlations with no assume the fluid dynamics are occupied for the simulation of intake and exhaust periods and the turbulent flame propagation analogy is assigned for the modeling of combustion. The second law of thermodynamics is added to the cycle model to execute the exergy analysis. The thermodynamic parameters such as in–cylinder pressure and temperature, ignition delay, and burn duration with the engine performance parameters are evaluated in the energy analysis. The exergies transferred via heat, work, and exhaust gases, besides destroyed exergy, fuel chemical exergy, thermomechanical exergy and total exergy are compiled for the exergy analysis. The carbon monoxide (CO), nitrogen oxide (NO), and carbon dioxide (CO2) emissions are defined for emission performance analysis. The results show that DSP operation affects moderately energy, exergy, and exhaust emissions. The best results were obtained at dimensionless spark plug location (ratio of spark plug location radius to cylinder radius–Xsp) of 0.2 for DSP compared to centrally located single spark plug (SSP).
- MakaleAçık Erişim2026Scopus SJRQ4La2O3 addition's effect on sodium-barium borosilicate glasses' radiation shielding capability: WinXCOM and EGS4 Monte Carlo analysis
Kaya, Selim
This study thoroughly investigated the impact of La2O₃ inclusion on the radiation shielding effectiveness of sodium-barium borosilicate glasses using EGS4 Monte Carlo simulations and WinXCOM computations. The gamma-ray shielding behavior of a set of glass samples was systematically investigated over a wide photon energy interval ranging from 50 to 2506 keV. The glass compositions were modified through the stepwise substitution of Na₂O with La₂O₃. Key radiation interaction and shielding metrics—including the mass attenuation coefficient (μ/ρ), half-value layer (HVL), mean free path (MFP), radiation protection efficiency (RPE), effective atomic number (Zeff), and kerma coefficients—were determined and comparatively evaluated. The results demonstrate that the progressive incorporation of La₂O₃ leads to a marked enhancement in radiation shielding performance, particularly within the low-and intermediate-photon energy ranges where photoelectric interactions prevail. The inclusion of La₂O₃ results in increased material density, μ/ρ, Zeff, and kerma values, while simultaneously reducing (HVL) and MFP.In conclusion, sodium-barium borosilicate glasses treated with La₂O₃ have better radiation attenuation capacities than their La₂O₃-free counterparts. These results validate the effectiveness of La₂O₃ substitution as an approach for customizing borosilicate glass systems for applications that need improved radiation shielding.
- MakaleYalnız künye2026Scopus SJRQ1The effect of acupressure on symptom management in children: A meta-analysis of randomized controlled trials
Akay, Gamze; Yıldız, Muhammed; Oğuzhan, Hatice; Uzun, Sevda
Purpose Pediatric patients often experience distress, pain, and nausea during medical procedures. This meta-analysis aimed to synthesize current evidence on the potential efficacy of acupressure on symptom management among pediatric patients aged 0–19 years. Design and methods This study was designed as a meta-analysis of randomized controlled trials . The literature search was conducted in PubMed, Web of Science, Scopus, EBSCOhost, Google Scholar, and the YÖK Thesis Center in January 2025 and updated in August 2026, with no restriction on publication year. After the reviews, 17 studies were included in the study. The data were synthesized by meta-analysis and narrative methods. Results The pooled analysis indicated that acupressure was associated with statistically significant reductions in reported anxiety (SMD = −1.021, p < 0.001), pain (SMD = −1.397, p < 0.001), and nausea (SMD = −0.388, p = 0.006). However, substantial statistical heterogeneity was observed for anxiety (I2 = 78.8%) and pain (I2 = 94.4%), and the number of studies available for each outcome was limited (anxiety: n = 6; pain: n = 9; nausea: n = 4). Conclusions and practice implications Current evidence suggests that acupressure may be a promising complementary approach for managing anxiety, pain, and nausea in pediatric patients. However, given the small number of studies per outcome, small sample sizes, and high statistical heterogeneity, these findings should be interpreted with caution. Further rigorous, well-designed RCTs are required to confirm these observations before routine clinical implementation can be recommended.
- MakaleAçık Erişim2025Scopus SJRQ1Snow cover detection using remote sensing techniques over different climate zones of Türkiye
Çakir, Günay; Bozali, Nuri; Sivrikaya, Fatih
Snow-covered land surfaces can be easily mapped using remote sensing technologies. Accurate estimation of snow cover on the land surface allows for the construction of water resource management today. Using Landsat TM/ETM + satellite images, this study tried to assess how much snowfall covered the soil in Trabzon, Gümüşhane, and Bayburt provinces between 1999 and 2023. Satellite images were classified into three categories using the ERDAS 9.1 TM software. These classes are classified as snow-covered surfaces, other places, and data loss (cloud-shadow). When performing image analysis, it was important to verify that the cloudiness rate in the images was less than 15%. Images with cloudiness rates of more than 15% were not used. Seasonal and annual trend analysis of snow-covered areas (SCA) over three distinct regions (Trabzon, Gümüşhane, and Bayburt) were examined using the Mann-Kendall test. When three distinct study regions were examined together, Bayburt had the highest SCA rate, followed by Gümüşhane and Trabzon. In all three fields, the highest SCA was recorded in 2000, while the lowest SCA was recorded in 2017. The trends noticed that SCA on both annual and seasonal scales did not reach the statistical significance level of 0.05. Although snowfall in Trabzon, Gümüşhane, and Bayburt was beneficial in the autumn and spring seasons, no statistically significant association was found. The research concluded that the existing data are inadequate to make any statements on the impact of global warming in the area. However, the study figured out that satellite data may be effectively used to identify snowy places as a result of the study. Comparable investigations need to be undertaken in regions with varying climates, utilizing diverse remote sensing data and classification methodologies.
AtıfScopus2WoS3OpenAlex3İncele - MakaleYalnız künye2026Scopus SJRQ3The Role of Religion and Spirituality in Coping With Stigmatization in Individuals Who Commit Homicide: a Phenomenological Study
Uzun, Sevda; Aslan, Çimen
This study aimed to evaluate the role of religion and spirituality in coping with stigmatization in individuals who commit homicide using a phenomenological approach. In the analysis of the data, two themes (the effects of committing crime on the individual, thoughts on the role of spirituality in coping with stigmatization) and six sub- themes (spiritual, social, physical, stigmatization, spirituality and coping) were identified. As a result of the study, it was determined that individuals who commit crimes are psychosocially affected very negatively and experience stigmatization due to the situation they experience.
- Kitap BölümüYalnız künye2025Strategic Performance Metrics and Innovative Measurement Methods in Public Personnel Management
Şimşek, Tuğçe
Public administration increasingly demands strategic, data-oriented personnel management, yet traditional hierarchical metrics miss dynamic performance and innovation. This chapter examines the limits of conventional measurement in public personnel management and proposes a data-driven, dynamic governance framework. Its aim is to link digitalization with accountability and citizen orientation by specifying strategic indicators and technology-enabled methods. It outlines core concepts, then elaborates on strategic performance indicators and comparative analyses of metrics. It explores advanced methods, including AI-supported tools and continuous learning models, alongside blockchain, big-data analytics, sentiment analysis, and remote-work assessment. Findings show these tools improve transparency and continuous feedback while enabling ethical, auditable evaluation; policy implications for sustainable, evidence-based decision-making are provided.
- MakaleAçık Erişim2025Scopus SJRQ3Relationship between Quality of Life and Suicide Risk in Iranian Cancer Patients: The Mediating Role of Religious Coping
Karimi, Amirreza; Mazhari, Seyed Amirhossein; Mohammadi, Elnaz Malek; Güngör, Sunay; Kalantari, Soheyla; Taebi, Mozhgan; Hamidi, Fatemeh; Farhadi, Bahar
Objective: Cancer patients often experience significant declines in quality of life (QoL), which can elevate suicide risk. In culturally religious societies like Iran, religious coping may serve as a critical buffer against such adverse outcomes. This study examined the relationship between QoL and suicide risk among Iranian cancer patients, with a focus on the mediating role of religious coping. Method: A purposive sample of 350 cancer patients from Tehran was analyzed using validated measures of QoL (EORTC QLQ-C30), suicide risk (Beck Scale for Suicide Ideation), and religious coping (Brief RCOPE-14). Data were analyzed using SPSS v26 and the PROCESS macro v4.0. Results: Bivariate correlations revealed that lower QoL was strongly associated with higher suicide risk (r = -0.62, p < 0.001), while positive religious coping correlated with better QoL (r = 0.48, p < 0.001) and reduced suicide risk (r = -0.41, p < 0.001). Mediation analyses demonstrated that positive religious coping significantly attenuated the QoL-suicide risk relationship (indirect β = -0.09, 95% CI [-0.15, -0.04]), accounting for 17% of the total effect. Negative religious coping, though less prevalent, also mediated this relationship but to a lesser extent (indirect β = -0.03, 95% CI [-0.05, -0.01]). Subgroup analyses indicated that the protective effect of positive religious coping was stronger in advancedstage patients. Conclusion: These findings underscore the importance of integrating spiritual care into oncology settings in Iran, leveraging faith-based resources to enhance resilience and reduce suicide risk. Future research should explore longitudinal and culturally tailored interventions to further elucidate the role of religious coping in cancer survivorship.
- MakaleAçık Erişim2025Scopus SJRQ1The Correlation Between Circulating Fetuin-A Levels and Fetuin-A to Adiponectin Ratio With Obesity in a Turkish Population: A Case-Control Study
Icer, Mehmet Arif; Koçak, Tevfik; Ağagündüz, Duygu; Yıldıran, Hilal
The relationship between serum fetuin-A levels and obesity has not been fully understood. This study aims to elucidate the levels of serum fetuin-A and F/A ratio in obesity and contribute to the literature on whether they could be novel clinical predictors modulated through body composition and nutrition. The study included 73 participants who were obese and 71 participants with normal weight, aged between 18 and 65 years. Certain anthropometric measurements of the individuals were taken, and a body composition analysis was performed. In addition, 3-day food records (consecutive days: 2 weekdays and one weekend day) were taken. Serum levels of fetuin-A (ng/mL) and adiponectin (μg/mL) were measured using an enzyme-linked immunosorbent assay (ELISA) method. The F/A ratio was obtained by dividing fetuin-A (ng/mL) by adiponectin (μg/mL). Serum fetuin-A (ng/mL) level and F/A ratio are higher in obese participants than in normal weight (p < 0.05). Body weight (kg) (r = 0.553, p ≤ 0.001), body mass index (kg/m2) (r = 0.492, p ≤ 0.001), waist circumference (cm) (r = 0.522, p ≤ 0.001), body fat percentage (%) (r = 0.203, p = 0.015), serum fasting blood glucose levels (mg/dL) (r = 0.317, p ≤ 0.001), and dietary protein intake (kg) (r = 0.165, p = 0.048) were observed to be positively correlated with serum fetuin-A levels. Positive correlations were also observed between these parameters and the F/A ratio (p < 0.05). Negative correlations were found between serum adiponectin and these parameters (p < 0.05). In addition, when dietary cholesterol intake was kept constant, a 1-unit increase in dietary energy intake (kcal) resulted in a 0.043-fold increase in serum fetuin-A (p < 0.05). The study results support theories suggesting the involvement of serum fetuin-A levels and the F/A ratio in the pathogenesis of obesity. The higher serum fetuin-A levels and F/A ratio found in obese participants may be considered as new clinical determinants that could be regulated through body composition and nutrition.
AtıfScopus1WoS1OpenAlex1İncele - MakaleAçık Erişim2024Scopus SJRQ1Assessment of the antioxidant and ACE-inhibitory activities and some quality characteristics of Kaşar cheese produced by probiotic Lactobacillus acidophilus
Gürmeriç, Hüseyin Ender; Şengül, Mustafa; Erkaya-Kotan, Tuba
In this study, four types of Kaşar cheese were produced using raw milk (C), starter culture (Streptococcus thermophilus and Lactobacillus delbrueckii ssp. bulgaricus) (S), starter culture + probiotic Lactobacillus acidophilus ATCC 4356 (SLA), and probiotic L. acidophilus ATCC 4356 (LA) were produced and ripened at 6 ± 2 °C for 150 days. The physicochemical, microbiological, proteolysis, electrophoretic (Urea-PAGE), ACE-inhibitory, and antioxidant activity analyses of vacuum-packed Kaşar cheeses were performed on 5, 30, 60, 90, 120, and 150 days of ripening. During ripening, no significant differences (p > 0.05) were detected in total solids, fat, and protein values of Kaşar cheeses. Titratable acidity, water-soluble nitrogen (WSN), ripening index (RI), and electrophoresis results of cheese samples showed an increase while pH values decreased. Also, the degradation products of αs1-casein were higher than those of β-casein. The number of probiotic L. acidophilus ATCC 4356 after scalding decreased by an average of 1.57 log cfu/g. However, probiotic bacteria count increased during ripening and maintained their viability. The addition of L. acidophilus ATCC 4356 improved the bioactivity, electrophoresis, titratable acidity, and ripening index results of Kaşar cheese. ACE-inhibitory activity of Kaşar cheeses increased during ripening and had the highest value on the 150th day of ripening. Furthermore, antioxidant activity of Kaşar cheeses increased on the 60th day of ripening and then decreased. Consequently, the combination of probiotic bacteria and starter culture had a positive effect on the physicochemical, microbiological, and proteolytic properties of Kaşar cheese.
AtıfScopus10WoS9OpenAlex11İncele - MakaleAçık Erişim2025Scopus SJRQ1Bio-Psychosocial Dimension of Hemodialysis and Spiritual Coping Strategies: A Phenomenological Study on Patient Experiences in Türkiye
Demir Çam, Sevgi; Uzun, Sevda
This study aimed to examine the bio-psychosocial experiences of patients living in Türkiye receiving hemodialysis treatment and to examine their spiritual coping strategies. A descriptive phenomenological research methodology was used in this study. This study was conducted with 23 hemodialysis patients, and interviews were conducted individually and face to face. The data were analyzed using Colaizzi’s phenomenological analysis method. The data analysis revealed four categories and thirteen main themes. It was concluded that the prolonged hemodialysis process negatively affected patients with chronic kidney disease bio-psychosocially, yet some patients used spiritual coping strategies to cope with the disease effectively. Spirituality is believed to be influential in dealing with the disease.
AtıfScopus1WoS1OpenAlex2İncele - MakaleAçık Erişim2024Scopus SJRQ1A different look at the environmental Kuznets curve from the perspective of environmental deterioration and economic policy uncertainty: evidence from fragile countries
Anwar, Ahsan; Barut, Abdulkadir; Pala, Fahrettin; Kilinc-Ata, Nurcan; Kaya, Emine; Lien, Duong Thi Quynh
Environmental degradation is one of the most significant issues that developing nations confront and needs to be resolved right away in order for them to achieve sustainable development. Government policies are crucial in this situation since emerging nations frequently struggle with the issue of policy ambiguity, which can result in environmental deterioration. In this context, this study investigates how policy uncertainty affects environmental degradation in the five fragile emerging economies known as the Fragile Five—Brazil, India, Indonesia, South Africa, and Turkey. Using data from 1996 to 2019, we estimate a Panel Quantile Regression analysis. The empirical findings indicate that economic policy uncertainty and technology innovation increases the environmental degradation whereas environmental degradation is slowed down by financial development and renewable energy consumption. Empirical evidence also confirms the presence of EKC hypothesis in fragile economies. Based on the findings, we suggest both a policy and an environmental framework for achieving sustainable development in fragile economies. Graphical Abstract: (Figure presented.)
AtıfScopus39WoS43OpenAlex50İncele - MakaleAçık Erişim2025Scopus SJRQ2Effectiveness of Psychosocial Interventions in Alcohol and Substance Use Disorders: A Meta-Analysis Study
Helvacı Çelik, Fatma Gül; Bayrak, Nurten Gülsüm; Uzun, Sevda
Alcohol and substance use disorders (ASUD), are increasing worldwide, and these psychiatric disorders are difficult to treat. The search for new treatments for these disorders continues. Psychosocial interventions (PI) are among them, and it is important to evaluate their effectiveness. This study aimed to assess the effectiveness of PI applied to individuals with ASUD. This meta-analysis was conducted by searching PubMed, Web of Science, EBSCOhost, Google Scholar, and YOK Thesis Center databases without year restrictions between October and December 2023. After reviewing the studies, 18 research articles were included in the analysis. The meta-analysis revealed that PI applied to individuals with ASUD were effective in reducing depression (SMD: −0.753, 95% CI: −1.215 to −2.91; I2 = 94.515; p < 0.05) and enhancing self-efficacy (SMD: 0.709, 95% CI: 0.096–1.321; I2 = 93.34; p < 0.05). However, these interventions were not found to be effective in improving self-esteem (SMD: 0.655, 95% CI: −1.641 to 0.331).
AtıfScopus1WoS1OpenAlex1İncele - MakaleAçık Erişim2025Scopus SJRQ2Bibliometric analysis of the results of Reiki research
Demir Doğan, Melike
Introduction: This study analyses bibliometric indicators to assess global research trends on Reiki, including publication patterns and key contributing countries. Methods: The publications included in Web of Science (WOS) databases between 1970 and 2024 were reviewed. The WOS database was searched using TS= “REIKI” and all WOS indexes were included. This search identified 414 studies. Among them, letters (n = 7), editorial materials (n = 19), book reviews (n = 9), corrections (n = 2), art and poetry (n = 1), news (n = 1), and retracted publications (n = 1) were removed. The remaining 374 articles were included in this bibliometric analysis. The R-package for bibliometric analysis (Bibliometrix) was used. Results: The bibliometric analysis found that researchers published Reiki-related studies between 1983 and 2024, with a publication growth rate of 4.47 %. On average, articles were 9.5 years old and received 13 citations per document. The total number of keywords identified by the authors was 553, the number of authors in the articles was 1124 authors, the number of single-author articles was 70, the average number of publications per author was 3.5, and international co-authorships were 7.219 %. The USA, Brazil, the United Kingdom, Canada, and Turkiye were the top five countries that published on Reiki, respectively. The USA, Canada, the United Kingdom, Australia, and Turkiye were the top five countries with the most cited articles, respectively. Vitale A. is the most cited author. Journal of Alternative and Complementary Medicine is the most cited journal. Conclusion: This study is the first of its kind to evaluate the articles written by researchers in the field of Reiki only. Despite the difficulties researchers experienced in the field of Reiki, the studies have increasingly been conducted in this field over the years and have been cited studies more. This study may be helpful for researchers to determine productive countries, journals, authors, and emerging trends in Reiki by providing comprehensive analyses and structured information on this subject.
- MakaleYalnız künye2025Scopus SJRQ1Tectonic structures of Lake Eğirdir (SW Türkiye) revealed by magnetic analysis
Aktaş, Gülten; Hisarlı, Z. Mümtaz; Öksüm, Erdinç
Lake Eğirdir, located within the tectonically complex Isparta Angle of southwestern Türkiye, hosts an actively deforming transtensional basin shaped by multidirectional stresses. Although the surrounding fault systems have been studied previously, the subsurface fault architecture beneath the lake remained largely unresolved. Understanding the lake's subsurface tectonic framework is crucial for regional geological and seismic assessments. This study addresses this gap by applying traditional and advanced edge detection techniques to identify magnetic lineaments and assess their connection with surrounding faults using newly acquired high-resolution magnetic data, corrected for noise and distortions. The distinct magnetic lineaments identified confirm a structural connection on land with the regional fault network around the lake, also showing their continuity under the lake. The results reveal dominant NW-SE and E-W trending magnetic lineaments. The most prominent structure identified within the lake is a NE-SW fault that cuts the NW-SE anomalies and is spatially related to the Yaka Fault on land. Its continuation beneath the lake is confirmed by clustered seismicity and normal fault-type focal mechanisms, indicating active transtensional deformation. These findings highlight active faulting processes that continue to shape the lake basin and contribute to understanding regional seismic hazards. Integration of magnetic, bathymetric, seismic, and geodetic datasets reveals that Lake Eğirdir acts as a dynamic neotectonic transfer zone within the Isparta Angle, facilitating the westward extrusion of the Anatolian Plate.
AtıfScopus1WoS1İncele - MakaleAçık Erişim2025Scopus SJRQ3Development of the Disaster Risk Perception Scale: Evaluation of Its Impact on Disaster Preparedness
Kiymis, Ibrahim; Kaya, Afsin Ahmet
Objectives:Developing a disaster risk perception scale is a critical component of Disaster Risk Management (DRM), enabling the assessment and evaluation of the reactions, behaviors, and risk culture characteristics of individuals living under disaster risk. The objective of this study is to develop a disaster risk perception scale and to assess its effect on disaster preparedness. Methods: A pilot study was conducted with 359 participants, followed by a main study involving 786 participants. All participants resided in Giresun and Elazig, Turkey, the regions recently affected by earthquakes, floods, and landslides. Results:A reliable and valid disaster risk perception scale with 25 items and 5 dimensions (exposure/impact, probability, uncontrollable, worry/fear, and vulnerability) was developed. The disaster risk perception of the participants differed significantly according to their educational level, income level, city of residence, and disaster education. As per the multiple regression analysis, the exposure/impact and worry/fear variables had positive and significant effects on disaster preparedness. Conclusions:For future studies, it is recommended to implement the disaster risk perception scale across diverse disaster types to assess and evaluate the outcomes effectively.
AtıfScopus11WoS9OpenAlex15İncele - MakaleAçık Erişim2025Scopus SJRQ1Adoption of AI-based order picking in warehouse: benefits, challenges, and critical success factors
Rad, Fakhreddin Fakhrai; Oghazi, Pejvak; Onur, İzmir; Kordestani, Arash
This research assesses the adoption of artificial intelligence (AI)-based batch order picking in a warehouse, focusing on benefits, challenges, and critical success factors. Using customer order data and simulation, the study employs a quantitative approach, combining mathematical and statistical estimations with qualitative examinations centered on interviews with the warehouse staff, its Enterprise Resource Planning (ERP) developer, and the AI developer. The findings of this mixed-method study reveal that the AI-based order-picking system (AI-based system) has improved order-picking efficiency by reducing travel distance and time. Nevertheless, challenges hinder maximum utilization of the system. In addition, the research highlights critical success factors and other benefits of adopting the system tailored to warehouse management. Understanding the lessons learned in this research is essential for businesses seeking to adopt AI to enhance their efficiency.
AtıfScopus13WoS5OpenAlex5İncele - MakaleAçık Erişim2024Scopus SJRQ1Transit warehouse location selection by IF AHP- TOPSIS integrated methods for disaster logistics: A case study of Turkey
Yesilcayir, Nigar; Ayvazoglu, Gulsah; Celik, Sefa; Peker, Iskender
Disasters; like earthquakes, fires, floods, wars, etc., are totally undesired events because they can cause unforeseen enormous physical, economic and social losses. In this respect, disaster logistics is crucial in providing fast and effective humanitarian aid at the lowest cost and with no profit motive in case of these unpredictable events. There are many supporting elements to achieve this goal and one of them is building transit warehouses. The aim of this study is to select the most suitable transit warehouse location in the Province of Hatay, Turkey. The weights of the criteria are determined by Intuitionistic Fuzzy AHP and the alternatives are ranked by Intuitionistic Fuzzy TOPSIS. The results show that “Emergency Cases and Natural Disaster” is the most important criterion and Alternative 3 (Kırıkhan) is the best location for the transit warehouse.
AtıfScopus19WoS16OpenAlex12İncele - MakaleYalnız künye2007Scopus SJRQ2Compositional variations as a result of partial melting and melt-peridotite interaction in an upper mantle section from the Ortaca area, southwestern Turkey
Uysal, Ibrahim; Kaliwoda, Melanie; Karsli, Orhan; Tarkian, Mahmud; Sadiklar, M. Burhan; Ottley, Chris J.
The bulk composition (major and trace elements) and the composition of minerals in peridotites of the Ortaca area, south-western Turkey, have been investigated to understand the processes controlling lithological and compositional variations in the dismembered mantle section, containing clinopyroxene-bearing harzburgite, harzburgite and dunite. The Ortaca peridotites vary from almost fertile clinopyroxene-bearing harzburgite (1.92-2.42 wt% Al2O3, 2.00-2.64% CaO) with a lower Cr# of the spinel phase (<24) to depleted harzburgite and dunite (0.17-1.60% Al2O3, 0.32-1.71% CaO) with a higher Cr# of the spinel phase (31-76). Systematic variations of major and trace elements of whole rocks and mineral phases are related to varying degrees of partial melting (up to 30%). The depleted harzburgite and dunite display LREE-enriched primitive-mantle-normalized patterns, suggesting mantle metasomatism, probably by fluid-bearing melt derived from the subducted slab, due to the melt-rock interaction process, whereas clinopyroxene-bearing harzburgite show HREE-enriched patterns. The Ortaca peridotites have low temperatures of equilibration relative to abyssal peridotites, because of H2O-assisted diffusional equilibration in the suprasubduction zone. They are characterized by oxygen fugacities Δlog FMQ between -1.61 and +0.74. Clearly, the clinopyroxene-bearing harzburgites define an increasing oxygen fugacity with almost constant Cr#, whereas the refractory harzburgite and dunite show a strong positive correlation between oxygen fugacity and Cr#. In view of the different measurements on minerals and whole rocks, and as a result of calculated temperatures and oxygen fugacities, we contend that the peridotites were subsequently affected by percolating hydrous boninitic melt, from which the high-Cr, low-Ti chromitites were formed, surrounded by a dunite envelope. It is likely that such an envelope of dunite resulted from interaction between melt and harzburgite, which caused the local removal of orthopyroxene within the mantle wedge above the suprasubduction zone.
AtıfScopus82OpenAlex70İncele - MakaleYalnız künye1998Growth rates of early Campanian rudists in a siliciclastic-calcareous setting (Pontid MTS., North-Central Turkey)
Steuber, Thomas; Yilmaz, Cemil; Löser, Hannes
Rudist communities that developed on the southern slope of the Pontid magmatic arc during the late Cretaceous thrived in a tectonically unstable setting, and in environments that were strongly influenced by siliciclastic sedimentation. Strontium isotope stratigraphy indicates an early Campanian age of the investigated association at Höbek Tepe, near Amasya. Stable isotope analyses of sclerochronological profiles of several shells of the three dominating hippuritid species yielded cyclic variations of δ18O that delineate seasonal variations in palaeotemperature. This allowed for the determination of individual life spans, skeletal growth rates and the reconstruction of the living growth fabric. Annual vertical shell growth of 35-40 mm was maintained by cylindrical morphotypes of Vaccinites ultimus during several successive years, while adult annual shell accretion of conical morphotypes was only 27 to 30 mm. Vertical growth of the co-occurring Yvaniella alpani was considerably slower and rarely exceeded 10mm/year. Differential growth rates of the two most abundant species, and morphological characters of Yvaniella which indicate that skeletal growth capacity was similar to sediment accumulation, allowed for a consistent reconstruction of the original growth fabric. CaCO3 production of the rudist communities amounted to 20 kg x year-1 x m-2 and contributed significantly to the sedimentary budget. Large-scale formation of fine-grained calcareous sediments by bioeroders occurred only in environments of less rapid burial, indicated by associations of slowly-growing geniculate rudist morphotypes and patellate corals. The implications of these results for the distribution of rudists and corals in Cretaceous shallow-marine environments are discussed.
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