Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Kaygusuz, Abdullah(35)
- Sipahi, Ferkan(35)
- Karsli, Orhan(34)
- Dokuz, Abdurrahman(30)
- Duran, Celal(30)
- Kandemir, Raif(29)
- Ozdes, Duygu(28)
- Maden, Nafiz(27)
- Uzun, Sevda(27)
- Merdan, Mehmet(26)
- Vural, Alaaddin(26)
- Öztürk, Serkan(25)
- Araz, Onur(24)
- Kulakaç, Nurşen(24)
- Ashyralyyev, Charyyar(23)
- Yildiz, Salih(23)
- Yilmaz, Ozgur(23)
- Doğan, Kadir Caner(21)
- Arslan, Mehmet(20)
- Aydin, Faruk(20)
- Doğru, Bülent(20)
- Bayraktar, Alemdar(19)
- Kankal, Murat(19)
- Ayaydin, Hasan(18)
- Baltaci, Cemalettin(18)
- Yolcu, Halil(18)
- Cakir, Tufan(17)
- Cengiz, Ekrem(17)
- Demir, Selim(17)
- Gücer, Mehmet Ali(17)
- Akaryali, Enver(16)
- Artan, Seyfettin(16)
- Hayaloğlu, Pınar(16)
- Kaya, Afşin Ahmet(16)
- Tosunoğlu, Büşra(16)
- Uysal, Ibrahim(16)
- Kurt, Kemal(15)
- Ozturk, Samet(15)
- Reis, Hatice Catal(15)
- Aksakal, Vecihi(14)
Yayınlar
- MakaleYalnız künye2025Scopus SJRQ1Ecological footprint components and agricultural productivity: Insights from MENA countries
Recepoğlu, Mürşit; Hayaloğlu, Pınar; Cakir, Sümeyra Cay; Artan, Seyfettin; Cakir, Mehmet Ali
The surge in the global population over the past century has highlighted the importance of agricultural production, leading to many studies to boost productivity. Unlike previous studies that primarily explore agricultural productivity growth, this study investigates how the subcomponents of the ecological footprint affect agricultural productivity in MENA countries between 1992 and 2021, identifying which types of environmental pollution have the most significant impact. Driscoll and Kraay (1998) method results show that ecological footprint has a major negative impact on agricultural productivity. Similarly, all ecological footprint components have a negative impact on agricultural productivity. The forest footprint has the highest coefficient magnitude, followed by crop land footprint, carbon footprint, fishing grounds footprint and grazing land footprint. The results have been tested for robustness using the Half-Panel Jackknife test to avoid biased results, and parallel results have been obtained. Finally, the causality between agricultural productivity and explanatory variables has been tested using Dumitrescu and Hurlin (2012) panel causality test. The findings suggest that policymakers may find it more effective to eliminate pollution rather than using additional resources to increase agricultural productivity. This approach allows for the reallocation of resources used in agricultural production to other areas.
AtıfScopus8OpenAlex8
İncele - MakaleYalnız künye2025Scopus SJRQ3Impact of erbium doping on critical current density and constituent phase in BSCCO superconductors
Açikel, S.; Cumhur, I.; Öztürk, A.; Başoğlu, M.; Düzgün, I.
This work systematically examines the influence of partial substitution of calcium (Ca) by erbium (Er) on the structural integrity and superconducting performance of Bi2Sr2Ca2Cu3O10+δ (BSCCO) high-temperature superconductors. Samples were synthesized through the conventional solid-state reaction method and characterized via X-ray diffraction, scanning electron microscopy, resistivity, and magnetization measurements. Despite the close effective ionic radii of Er and Ca, experimental results revealed that increasing Er content led to a deterioration of the superconducting phase and the emergence of semicon ducting characteristics. Quantitative analyses demonstrated a notable reduction in critical current density (Jc), with undoped BSCCO samples exhibiting approximately 14% higher Jc values under equivalent conditions. These findings suggest that while ionic size considerations may permit Er substitution from a stoichiometric perspective, the structural and superconducting phase stability of the BSCCO matrix is adversely affected by Er incorporation.
- MakaleYayıncıda açık erişim2025Scopus SJRQ2The Psychometric Properties of the Turkish Version of the Stress Scale for Siblings of Childhood Cancer Patients
Aksoy, Bahar; Doğan, Melike Demir; Bolacali, Edanur Tar; İnci, Tuğba
Aim: This study aimed to evaluate the psychometric characteristics of the Turkish version of the “Stress Scale for Siblings of Childhood Cancer Patients (SCCP)”. Methods: This study was conducted with 273 siblings aged 11-16 of childhood cancer patients (SCCPs) who were treated in a hospital in the Black Sea Region of Türkiye between March 2022 and April 2024. Data were collected with “The Sociodemographic Information Form” and “SCCP”. The data were examined through descriptive statistics, as well as exploratory and confirmatory factor analyzes. Results: The SCCP Turkish version is a valid and reliable scale consisting of 27 items and six sub-dimensions. The SCCP Turkish version explained 77.676% of the total variance. The SCCP Turkish version was found to be summable according to Tukey's test of additivity (p = 0.334), and the test-retest reliability of the scale was r = 0.864 (p < 0.05). Conclusion: This study indicate that the Turkish version of the SCCP is a valid and reliable instrument for evaluating stress levels in siblings aged 11 to 16. Practice Implications: With SCCP, nurses can determine the stress levels of SCCPs and contribute to the planning of necessary interventions to cope with stress.
AtıfScopus4WoS4
İncele - MakaleYalnız künye2025Scopus SJRQ2The Relationship Between Parental Acceptance and Loneliness Levels of Turkish University Students: The Mediating Role of Coping Self-Efficacy
Odaci, Hatice; Akdeniz, Burak; Türkkan, Tuğba
In today's world, where young adults face increasing psychological and social challenges, understanding the factors that influence loneliness has become more critical than ever. This study examines whether perceived self-efficacy mediates the relationship between parental acceptance and loneliness in university students. The study population consists of undergraduate students studying at universities affiliated with the Council of Higher Education in Türkiye. Data were collected with demographic information form created by the researchers, UCLA Loneliness Scale, Adult Parental Acceptance-Rejection Scale, Coping Self-Efficacy Scale. Independent samples t-test and one-way analysis of variance were used for comparisons between groups, and Pearson's correlation analysis and mediation analysis were used to analyze the relationships between variables. According to the results, the level of acceptance perceived by male students from their mothers was higher than that of female students. There is a significant negative relationship exists between loneliness levels and parental acceptance of university students. It was found that parental acceptance scores significantly predicted loneliness and coping self-efficacy scores. This study shows that self-efficacy has a partial mediating role in the relationship between parental acceptance and loneliness and that self-efficacy may create resistance against negative emotions. Identifying this relationship and potential mediating effects at an early stage is important for strengthening the family environment and promoting healthy child development. This study will contribute to the literature with new findings to identify protective factors and develop psychosocial interventions for young adults struggling with loneliness.
AtıfScopus1WoS1OpenAlex1İncele - MakaleYalnız künye2025Scopus SJRQ3Ruled surfaces generated by Darboux and instantaneous Pfaff vectors of Salkowski curves in Euclidean 3-space
Mazlum, Sumeyye Gur; Haliscelik, Ebru Cakil; Bektas, Ozcan
In the present study ruled surfaces generated by Darboux and instantaneous Pfaff vectors of Salkowski curves in Euclidean 3-space are considered. Some geometric properties of these surfaces such as striction curves, surface normal vectors, tangent and asymptotic planes, distribution parameters, Gaussian and mean curvatures and fundamental forms are investigated. Some results and interpretations of these surfaces are obtained.
- MakaleYalnız künye2025Scopus SJRQ2Evaluation of soil-structure resonance by determining local soil conditions in Gümüşhane city center
Altundaş, Suna; Tanış, Abdulsamed
Recent earthquakes have adversely affected human life, highlighting the necessity of identifying structural and ground conditions to assess risky areas and mitigate potential damage from future seismic events. Gümüşhane, the designated study area, is susceptible to the impacts of a possible earthquake due to its proximity to the North Anatolian Fault Zone (NAFZ). Accordingly, vertical electrical sounding (VES), multi-channel analysis of surface waves (MASW), and microtremor methods were employed in the central district of Gümüşhane to characterize local ground conditions and to evaluate the resonance hazard potential arising from the interaction between structures and the underlying soil. Dominant period (T0) and frequency (f0), spectral amplification (A0), soil index of vulnerability (Kg), average S wave velocity for 30 m depth (Vs30), ground type, and soil-structure resonance hazard potential were determined. For the study area, f0 values between 1.32–8.91 Hz (T0 values varied between 0.11–0.76 s), A0 values between 0.93–7.63 according to horizontal/vertical spectral ratio (HVSR) analysis, and Vs30 values were between 390–886 m/sec to MASW. As a result of the evaluation of microtremor measurements made in all buildings using the floor spectral ratio (FSR) technique, the soil-structure potential resonance hazard was found to be low. The present study, conducted in Gümüşhane, examined the subject of soil-structure interaction. In the process of planning new residential areas, it is imperative to ensure the reliability of construction based on the local ground conditions. Furthermore, it is essential to determine the risk status of buildings in relation to potential earthquake movements.
AtıfScopus2WoS2OpenAlex2İncele - MakaleYalnız künye2025Scopus SJRQ2Disease Burden and Sexual Life in Patients with Fibromyalgia: A Phenomenological Study
Demir Çam, Sevgi; Uzun, Sevda; Koyunoğlu, Bedriye Cansu
The aim of this study was to evaluate the burden of disease and sexual life experiences in patients with fibromyalgia using a phenomenological approach. In the study using phenomenological research method, semi-structured in- depth interviews were conducted with 20 fibromyalgia patients who applied to the neurology outpatient clinic of a state hospital in a province in southern Turkey. Criterion sampling method, one of the purposive sampling methods, was used to reach the sample group. Interviews continued until data saturation was achieved. All interviews were recorded on a voice recorder after obtaining the necessary permissions from the patients and then transcribed. The data of the study were evaluated using thematic analysis. The study was conducted and reported according to the COREQ checklist. Data analysis revealed two main themes (effects of the disease and sexual problems and coping) and five sub-themes (mental, physical, social, problems and coping). As a result of the study, it was determined that the patients experienced serious physical, mental and social problems due to and their sexual life was also negatively affected. Individuals experience significant problems related to sexual life due to fibromyalgia. Since fibromyalgia is a multifaceted disease, professional evaluation of sexual life in patients and diagnosis of sexual dysfunctions are of great importance in terms of improving quality of life.
AtıfScopus1OpenAlex1İncele - MakaleYalnız künye2025Scopus SJRQ3The interaction between the Mediterranean diet, obesity, and disease severity: A case–control study on psoriatic patients
Konyalıgil Öztürk, Nurefşan; Kurtbeyoğlu, Emine; Atuk Kahraman, Tutku; Çiçek, Betül; Çınar, Salih Levent; Borlu, Murat
Background: Psoriasis is a chronic inflammatory disease that can be influenced by nutritional status and dietary habits. In particular, adherence to the Mediterranean diet, known for its anti-inflammatory properties, is increasingly being investigated in relation to disease severity and nutritional status. Aims: This case–control study, including 50 psoriatic patients and 40 healthy controls, aimed to examine the correlation between adherence to the Mediterranean diet and disease severity, nutritional status, and disease presence in patients with psoriasis. Methods: The clinical severity of psoriasis was assessed using the Psoriasis Area and Severity Index (PASI) score. Anthropometric measurements were taken, and body composition was determined using bioelectrical impedance analysis. All participants’ Mediterranean Diet Adherence Screener (PREDIMED) scores and 24-h food consumption records were evaluated. Results: The body weight (BW), waist circumference (WC), hip circumference (HC), and fat mass (FM) values of psoriatic patients were found to be significantly higher than those of the healthy control group (p < 0.05). The PREDIMED score of psoriatic patients was found to be significantly lower than that of the control group (p < 0.001). A negative correlation was observed between the PREDIMED score and BW, FM, and HC (p < 0.05). PASI levels decreased as PREDIMED scores increased (r = −0.314, p = 0.048). According to logistic regression analysis, after adjusting for age and sex, the likelihood of being healthy was approximately 6.363 times higher in those with high adherence to the Mediterranean diet (p < 0.001). Conclusion: When psoriatic patients were compared with healthy controls, significant differences were observed in PREDIMED scores. Notably, greater adherence to the Mediterranean diet was associated with reduced disease severity, suggesting a potential mitigating effect even in the presence of obesity.
AtıfScopus1İncele - MakaleYalnız künye2025Scopus SJRQ2Coronavirus anxiety, fear level, and awareness of nursing students starting face-to-face education
Demir Doğan, Melike; Uludağ, Elanur
Aims: This study was designed to determine the coronavirus-associated anxiety, fear, and awareness of nursing students who will start face-to-face education. Methods: In this descriptive and cross-sectional study, the data were collected using the socio-demographic characteristics form, Fear of COVID-19 Scale, Coronavirus Anxiety Scale-Short Form, and COVID-19 Awareness Scale between 29 November 2021 and 1 January 2022. The sample consisted of 344 nursing students. Results: The mean age of the students participating in the study was 20.49±1.78. It was determined that there was a significant difference between gender and the total score of Fear of COVID-19 Scale and the total score of COVID-19 Awareness Scale. Individuals having a nuclear family had significantly higher levels of fear of COVID-19 than those having an extended family. There was a positive and significant relationship between number of vaccinations, age, total score of the Coronavirus anxiety scale, total score of the COVID-19 awareness scale, total score of the hygiene subscale, total score of distance subscale, and total score of mask subscale. It was determined that there was a negative significant correlation between age and the total score of COVID-19 awareness scale and the total score of the Coronavirus anxiety scale. Conclusion: It was determined that women’s levels of fear of COVID-19 and coronavirus awareness levels were significantly higher compared to their male counterparts. The fear of COVID-19 increased as the number of vaccination, age. As the fear of COVID-19 increased, the level of COVID-19 awareness also increased.
AtıfScopus1WoS1OpenAlex1İncele - MakaleYayıncıda açık erişim2025Scopus SJRQ1Was the Formation of the North Anatolian Fault Influenced by the Aegean Extension?
Uysal, I. Tonguc; Karabacak, Volkan; Aykut, Tunahan; Ring, Uwe; Liu, Entao; Sancar, Taylan; Leonard, Nicole; Tong, Kui; Todd, Andrew J.; Temel, Abidin
The North Anatolian Fault (NAF), one of the most prominent plate boundary continental fault systems on Earth, facilitates the westward movement of the Anatolian microplate into the Aegean region. The temporal and spatial evolution of the NAF is important for understanding the mechanism of escape tectonics during plate interaction in active orogenic regions. The driving force(s) behind the movement of the NAF and the time period over which this occurred remain controversial. Our U-Pb and K-Ar dating of syntectonic minerals shows that a predecessor faulting initiated as early as similar to 40 Ma due to shortening along the Neo-Tethyan suture zone. Fault reactivations occurred at similar to 20 and 10 Ma synchronously in eastern and western Anatolia, suggesting that the NAF already existed by similar to 20 Ma. Our data also show that the westward motion of Anatolia was not only controlled by the Arabia-Eurasia collision in eastern Anatolia, but also by Aegean extension.
AtıfWoS7OpenAlex6İncele - MakaleYalnız künye2025Scopus SJRQ1Revealing the environmental influences of energy, transport, and pollution taxes on different transportation modes
Artan, Seyfettin; Pata, Ugur Korkut; Hayaloglu, Pinar; Cakir, Mehmet Ali; Recepoglu, Mursit; Cay Cakir, Sumeyra
The need for transportation is increasing with the effect of globalization in the developing economic system. The transportation sector, which is essential for economic development, may pose some threats to a sustainable environment. Although European countries have achieved various successes in reducing carbon emissions, they are struggling to reduce carbon dioxide (CO2) emissions from transportation. To overcome this difficulty, European countries are using various policy instruments such as environmental taxes. In this context, this study investigated the impact of disaggregated environmental taxes (pollution, energy, and transport), structural change, and institutional quality on transport-related carbon emissions (water, air, and road transport) in 24 European countries over the period 2008-2022. To this end, the study uses the novel half-panel jackknife estimation and the bias-corrected method of moments. The results indicate that there is no long-term relationship between environmental taxes and water transportation-related CO2 emissions. In contrast, structural changes and pollution taxes are effective in reducing road and air transport-related CO2 emissions. These results suggest that European countries should focus on reducing CO2 emissions through effective pollution taxes and encourage carbon taxes instead of energy and transport taxes, thereby supporting the European Green Deal's goal of becoming the first climate-neutral continent.
AtıfScopus6WoS5OpenAlex5İncele - MakaleYalnız künye2025Scopus SJRQ1Compositional variability and alteration dynamics of chromitites under greenschist metamorphism in the Kizildag ophiolite, southern Turkiye
Akmaz, Recep Melih; Uysal, Ibrahim; Su, Ben-Xun; Sen, Ahmet D.; Hu, Wen-Jun; Seitz, Hans-Michael; Mueller, Dirk; Eslami, Alireza
This study presents a complete alteration sequence in chromitites from the Kizildag ophiolite (southern T & uuml;rkiye), documenting three distinct chromite types that record processes related to Neotethyan subduction. Chromitites exhibit predominantly lenticular forms and occasionally banded textures, embedded within mantle peridotites and the mantle-crust transition zone, specifically harzburgite and dunite. Our analysis categorizes chromite grains into three groups: fresh, altered, and porous. Fresh chromites are characterized by high contents of Cr2O3 ranging from 42.69 to 57.08 wt% and Al2O3 from 12.46 to 25.34 wt%. In contrast, altered chromites, typically located along fractures or at the edges of fresh grains, show significant variability in chemical composition, with Cr2O3 content between 43.34 and 63.94 wt% and Al2O3 between 2.91 and 14.84 wt%. Porous chromites, distinguished by their porous structure, present Cr2O3 contents from 44.58 to 52.66 wt% and Al2O3 from 3.00 to 8.38 wt%. Notably, altered and porous chromites demonstrate substantial enrichments in Fe and trace elements such as Mn, Ni, Zn, Co, and Ga, indicating a shift due to metamorphic processes. The observed high Cr# (0.68-0.93) and low Mg# (0.25-0.65) values in rims of the altered and porous chromite further illustrate the metamorphic influence on chromite, with greenschist-facies conditions indicated by the Cr-Al-Fe3+ diagram at temperatures below 450 degrees C. The alteration dynamics reflect a progression that initiates with the olivine matrix and advances through reactions involving fresh chromites. This progression results in mass loss, the formation of chlorite, and the porous structures. Our findings contribute to the understanding of metamorphic alteration processes in chromitites and provide a detailed account of the geochemical trends (such as Fe/Mg exchange and trace element enrichment) that reflect greenschist-facies metamorphism. The evidence of chlorite formation and the prevalence of porous textures highlight the influence of metamorphic fluids over serpentinization, offering a model for chromite alteration in supra-subduction zones. This research elucidates the metamorphic history of chromitites in the Kizildag ophiolite.
AtıfScopus3WoS6OpenAlex4İncele - MakaleYalnız künye2025Scopus SJRQ1Dense Seismic Recordings of the 2023 KahramanmaraşEarthquake Sequence in Southeastern Türkiye
Zor, Ekrem; Peng, Zhigang; Ergin, Mehmet; Sandvol, Eric; Sevim, Fatih; Rdamaz, Mustafa Cengiz Tap i; Mach, Phuc; Yalvac, Ouzhan; Tarancioglu, Adil; Adeboboye, Oluwaseyifunmi
The devastating 6 February 2023 Kahramanmara & scedil;earthquake sequence in southeastern T & uuml;rkiye started with a moment magnitude (Mw) 7.8 earthquake, for which the initial rupture broke the Sak4ag & ouml;z segment near Nurda & gbreve;& imath; and then jumped into a bilateral rupture along multiple segments of the Eastern Anatolian fault zone (EAFZ). This complicated rupture was followed nine hours later by an Mw 7.6 event near Ekin & ouml;z & uuml;. To better understand the spatiotemporal evolution of aftershocks, site amplification, and the structural and tectonic framework of the EAFZ in this diffuse triple junction, we deployed a dense seismometer array covering both aftershock zones for nearly four months. The main Eastern Anatolian Seismic Temporary (EAST) array includes 125 nodal, 10 broadband, and 6 strong-motion seismic stations distributed around the rupture zone. An additional linear array of 73 nodal stations was also installed across the Pazarc & imath;k segment of the EAFZ and the Sak4ag & ouml;z segment near the Mw 7.8 epicenter to record fault-zone waves for similar to 30 days. This article shows example recordings and the EAST array geometry, preliminary research results, and the metadata related to all of the stations in this array. A deep-learning-based phase picking for one month of continuous recording yielded millions of seismic phase readings and tens of thousands of aftershock locations after phase associations. We also give examples of both local and teleseismic waveforms recorded by the nodal arrays, which can be used for subsequent high-resolution earthquake relocation, imaging of crustal structures, and fault-zone imaging.
AtıfScopus5WoS5OpenAlex7İncele - MakaleYayıncıda açık erişim2025Scopus SJRQ2Could Different Doses of Dexmedetomidine Be as Effective as Amifostine Against Radiotherapy-Induced Liver Injury in Rats? Evidence from Mitotic, Apoptotic, Oxidative, and Neurogenic Insights
Beyazal Polat, Hatice; Yilmaz, Hamit; Demir, Kasim; Kilinc, Kagan; Gülhan, Belemir; Rakici, Sema Yilmaz; Tumkaya, Levent
Background/Objectives: Radiotherapy (RT) induces oxidative stress and structural damage in solid tissues, including the liver. This study aimed to investigate the histological and immunohistochemical effects of dexmedetomidine (DEX) and amifostine on their potential protective and regenerative properties against liver injury induced by radiation therapy. Methods: This study consisted of five randomized groups: control, RT, RT-D100, RT-D200, and RT-A (Amifostine). A total of 100 mu g/kg DEX, 200 mu g/kg DEX, and 200 mu g/kg amifostine were administered before radiotherapy as per the experimental design. After RT, liver specimens were analyzed for histological alterations, including periportal and perisinusoidal fibrosis, vacuolization, and pyknotic nuclei. Furthermore, immunohistochemistry investigations were conducted to evaluate apoptosis, mitosis, oxidative stress, and neural regeneration in non-neuronal liver tissue following radiotherapy and subsequent treatment. Results: The control group's liver tissue exhibited standard histological architecture, whereas the RT group displayed severe cellular degeneration, periportal and perisinusoidal fibrosis, cytoplasmic vacuolization, and an increase in pyknotic nuclei. The apoptotic index was markedly reduced in the RT-D100 and RT-D200 groups relative to the RT group. Furthermore, caspase-3 immunoactivity was negligible in the control group, while a significant increase was observed in the RT group. The administration of amifostine significantly increased GAP-43 levels. Conclusions: DEX mitigates RT-induced hepatic injury chiefly through antioxidant and anti-apoptotic pathways, whereas amifostine promotes hepatic regeneration by modulating GAP-43.
- MakaleYayıncıda açık erişim2025Scopus SJRQ2Serum neopterin and kynurenine as predictive and prognostic biomarkers in prostate cancer: the role of dietary inflammatory index and biomarker interactions
Icer, Mehmet Arif; Koçak, Tevfik; Acar-Tek, Nilufer; Yesil, Suleyman; Icer, Yusuf
Background It has been shown that neopterin levels in various body fluids can help predict the diagnosis of different malignancies. Although many studies have investigated the roles of serum neopterin concentrations, tryptophan metabolism, and the dietary inflammation index (DII) in various cancers, the connection between these factors and prostate cancer (PC) remains uncertain. The aim of this study was to investigate the predictive and prognostic roles of serum neopterin, and kynurenine levels, along with the kynurenine-to-tryptophan ratio (KTR) and DII in prostate cancer. Methods This study was conducted with 57 newly diagnosed prostate cancer patients, 55 benign prostate hyperplasia patients, and 56 healthy male individuals in the control group, all aged 40 years and older. Participants had specific anthropometric measurements taken, and three-day food records were kept. DII was calculated based on data for thirty-four available nutrients by using food records. Serum levels of neopterin, kynurenine, tryptophan, tumor necrosis factor alpha (TNF-alpha), and interferon-gamma (IFN-gamma) were measured using an enzyme-linked immunosorbent assay (ELISA) method. Results Serum neopterin (11.79 +/- 6.09), kynurenine (1655.48 +/- 1122.04), TNF-alpha (221.59 +/- 232.06) and IFN-gamma (137.68 +/- 107.11) levels were higher in the malignant group than in both the control (2.72 +/- 0.76, 352.40 +/- 69.33, 223.94 +/- 226.67, and 23.03 +/- 7.28, respectively) and benign groups (3.17 +/- 0.74, 377.94 +/- 109.05, 179.61 +/- 224.36, and 25.63 +/- 7.50, respectively) (p < 0.05). Another result of our study is that in the malignant group, serum neopterin levels exhibited significant positive correlations with serum kynurenine (r = 0.80, p < 0.0001), IFN-gamma (r = 0.86, p < 0.0001) and TNF-alpha levels (r = -0.27, p = 0.0453) and DII (r = 0.30, p = 0.0229), while they exhibited weak correlations with serum PSA, and other diet parameters. Additionally, kynurenine was the only parameter showing significant differences in mean values concerning surgical margins (p < 0.05). Conclusions The findings of this study support the hypothesis that serum neopterin and specific tryptophan catabolites (e.g., kynurenine), could serve as predictive and prognostic biomarkers for prostate cancer diagnosis. However, our results do not support the hypothesis that DII and certain dietary factors play a direct role in the development or diagnosis of prostate cancer.
AtıfScopus3WoS3OpenAlex2İncele - MakaleYalnız künye2025Scopus SJRQ1Subduction initiation of the Neotethyan Ocean recorded in chromite deposits: A case study of the Kızıldag ophiolite, southern Turkiye
Uysal, Ibrahim; Akmaz, Recep Melih; Su, Ben-Xun; Demir, Yilmaz; Sen, Ahmet Dundar
The chromitites of the K & imath;z & imath;lda & gbreve; ophiolite (KO) are primarily characterized by massive and disseminated textures within refractory mantle peridotites, predominantly harzburgite and dunite, with occasional occurrences of banded and nodular chromitites. Based on chromite composition, these chromitites can be classified into two groups exhibiting a broad compositional range: intermediate (0.55 <= Cr# < 0.70, TiO2 = 0.08-0.51 wt%) and high-Cr (0.70 <= Cr# <= 0.77, TiO2 = 0.05-0.28 wt%). The compositions of minor and trace elements align consistently with variations in Cr#. Total PGE (Os, Ir, Ru, Rh, Pt, Pd) contents in these chromitites are generally less than 500 ppb, with many samples showing enrichment of IPGE (Os, Ir, Ru) relative to PPGE (Rh, Pt, Pd). However, certain samples from both groups display elevated PGE concentrations (Sigma PGE(intermediate) = 718 ppb, Sigma PGE(High-Cr) = 866 ppb) compared to other samples. The dominant platinum group mineral inclusions in chromite are Ru-rich laurite [(Ru, Os)S-2], with a single osmiridium (Os-Ir alloy) grain also observed suggesting formation under high-temperature and low & fnof;S-2 conditions. Primary base metal mineral inclusions include millerite and pentlandite. Additionally, some chromite crystals contain single or multi-phase silicate inclusions, such as clinopyroxene, orthopyroxene, olivine, and amphibole. Parental melt compositions, calculated from Al2O3 and TiO2 contents of chromites, indicate that most high-Cr chromitites originated from boninitic melts, whereas intermediate chromitites and some high-Cr samples derived from melts with intermediate compositions. Trace element compositions of amphibole and clinopyroxene inclusions in the chromite crystals from the intermediate group further support crystallization from hydrous intermediate melts. It is proposed that the intermediate chromitite group formed from partial melts influenced by fluids from the subducted oceanic crust during the early stages of subduction initiation, while high-Cr chromitites originated from hydrous melts derived from a more depleted mantle wedge in later stages.
AtıfScopus3WoS4OpenAlex3İncele - Kitap BölümüYayıncıda açık erişim2024Behavioral economics and monetary wisdom: A cross-level analysis of monetary aspiration, pay (dis)satisfaction, risk perception, and corruption in 32 nations
Tang, Thomas Li-Ping; Li, Zhen; Özbek, Mehmet Ferhat; Lim, Vivien Kim Geok; Teo, Thompson Sian Hin; Ansari, Mahfooz A.; Sutarso, Toto; Garber, Ilya E.; Chiu, Randy Ki-Kwan; Charles-Pauvers, Brigitte
Corruption involves greed, money, and risky decision-making. We explore the love of money, pay satisfaction, probability of risk, and dishonesty across cultures. Avaricious monetary aspiration breeds unethicality. Prospect theory frames decisions in the gains–losses domain and high–low probability. Pay dissatisfaction (in the losses) excites dishonesty in the name of justice at the individual level. Corruption Perceptions Index, CPI, signals a high–low probability of getting caught for dishonesty at the country level. We theorize: Decision-makers adopt avaricious love of money aspiration as a lens and frame dishonesty in the gains–losses domain (pay satisfaction–dissatisfaction, Level 1) and high–low probability (CPI, Level 2) to maximize expected utility and ultimate serenity. We challenge the myth: Pay satisfaction curbs dishonesty across nations consistently. Cross-level three-dimensional visualization demonstrates (6500 managers in 32 countries across six continents): With high aspiration, pay dissatisfaction excites the highest- (third-highest) avaricious justice-seeking dishonesty in high (medium) CPI nations; pay satisfaction provokes the second-highest avaricious opportunity-seizing dishonesty in low CPI entities—maximizing expected utility. Low aspiration and high pay satisfaction consistently create low dishonesty—achieving ultimate serenity. We expand prospect theory from a micro and individual-level theory to a cross-level theory of monetary wisdom across 32 nations, providing novel insights to business ethics, the environment, and responsibility.
AtıfScopus1OpenAlex1İncele - MakaleYalnız künye2024Dijitalleşmenin Vergi Kaçırma Üzerindeki Etkisinde Şeffaflığın Aracılık Rolü
Saruc, Naci Tolga; Uğur, Candan Yılmaz
Bu çalışmanın amacı dijitalleşmenin vergi kaçırma üzerindeki etkisini belirlemektir. Çalışma ayrıca dijitalleşmenin vergi kaçırma üzerindeki etkisinde şeffaflığın aracılık rolü olup olmadığını da incelemektedir. Bu bağlamda 2016 yılı 137 ülke verisinin yer aldığı çalışma öncelikli olarak regresyon analizi ile test edilmiştir. Bulgular dijitalleşmenin vergi kaçırma üzerindeki etkisinin negatif yönde ve güçlü olduğunu göstermektedir. Çalışmada ayrıca dijitalleşmenin vergi kaçırma üzerindeki etkisinde şeffaflığın aracılık rolü olup olmadığını test etmek amacıyla PROCESS Model 4 kullanılmış ve şeffaflığın aracılık etkisi olduğu tespit edilmiştir. Bu bulgular neticesinde dijitalleşme alanında yapılacak teknolojik yatırımların ve yapısal dönüşümlerin şeffaflığı besleyeceği ve bu sürecin uzun vadede vergilendirme süreçlerindeki kayıp ve kaçaklara ilişkin caydırıcılığı artıracağı düşünülmektedir.
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İncele - MakaleYalnız künye2024Z Kuşağı Kişilik Tiplerinin İş Değerlerine Etkisi: Öğretmenler Üzerine Bir Araştırm
Sımsek, Tugçe; Eroğlu, Gönül
Kişilik bireyi diğerlerinden farklı kılan özelliklerinin tamamıdır. Kişilik ile ilgili kuramlar bu farklılıkların hangi faktörlerden kaynaklandığını, kişiliğin ortaya çıkmasını ve gelişimini ne kadar etkilediğini incelemiştir. Kişilik kuramlarında bireylerin dünyaya geldiği ve yaşadığı dönemin kişiliğin belirlenmesinde belirleyici olabileceği ifade edilmektedir. Dönemin siyasal, sosyal, ekonomik yapısı, teknoloji kullanımı vb. gibi faktörler o dönemdeki bireylerin benzer kişilik özelliklerine sahip olmasına neden olmaktadır. Bir kişilik topluluğunun kuşak olarak adlandırılabilmesi için yaklaşık olarak aynı yıllarda doğmuş olması, aynı çağın şartlarını, dolayısıyla birbirine benzer sıkıntıları, kaderleri paylaşmış ve benzer ödevlerle yükümlü olmaları gerekmektedir. Her kuşağın kişilik özelliğine göre iş yaşamından beklentileri ve iş değerleri farklılaşmaktadır. Bu çalışmada iş yaşamında yerini yeni almaya başlayan Z Kuşağının kişilik özellikleri ve iş değerleri arasındaki ilişki incelenmiştir. Kişilik özelliklerini belirlemek için “Beş Faktör Kişilik Ölçeği”, iş değerlerini belirlemek için “İş Değerleri Ölçeği” kullanılmıştır. Araştırma bundan sonraki kuşakların yetiştirilmesinde en büyük etkiye sahip meslek çalışanlarından biri olan öğretmenler üzerinde yapılmıştır. Gümüşhane ilinde bulunan 276 Z Kuşağı öğretmenine anket yapılmış, elde edilen veriler SPSS 22.0 programı ile analiz edilmiştir. Frekans analizi, korelasyon ve doğrusal regresyon analizi ile veriler çözümlenmiştir. Z kuşağı öğretmenlerinin kişilik özellikleri ile iş değerleri arasında anlamlı bir ilişki olduğu tespit edilmiştir.
- MakaleYalnız künye2024Fanatizmin Lisanslı Ürün Satın Alma Niyeti Üzerindeki Etkisi ve Marka Sadakatinin Aracı Rolü
Avcı, İbrahim; Koroglu, Ali
Lisanslı ürün satın alma davranışı son dönemlerde hem kulüplerin hem de araştırmacıların önem verdiği konulardan biridir. Araştırmanın amacı fanatizmin lisanslı ürün satın alma niyeti üzerine etkisini belirlemek ve bu etkide marka sadakatinin aracılık rolünü ortaya koymaktır. Bu amaçla kolayda örneklem yönteminin tercih edildiği araştırmada, veriler İstanbul ilindeki futbol taraftarlarından yüz yüze anket tekniğiyle elde edilmiştir. Veri toplama sürecinde 424 taraftar ankete katılmış ve elde edilen veriler SPSS ve AMOS paket programları aracılığıyla analiz edilmiştir. Yapılan analizler sonucunda fanatizmin lisanslı ürün satın alma niyeti ve marka sadakati üzerinde; marka sadakatinin ise lisanslı ürün satın alma niyeti üzerinde olumlu doğrultuda anlamlı etkiler olduğu belirlenmiştir. Ayrıca elde edilen diğer bir önemli sonuç, fanatizmin lisanslı ürün satın alma niyeti üzerindeki etkisinde, marka sadakatinin aracılık rolüne sahip olduğudur. Ulaşılan bu sonuçlar konuyla alakalı hem teorik hem de uygulamaya yönelik önemli katkılar sunmaktadır. Son olarak ulaşılan sonuçlar kapsamında bu konuda gelecekte araştırma yapacak araştırmacılara önerilerde de bulunulmuştur
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