MAU GCRIS Standard Database (Mardin Artuklu University)
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Control Strategy Evaluation for Reactive Power Management in Grid-Connected Photovoltaic Systems Under Varying Solar Conditions
No full textSolar energy is environmentally friendly and one of the most significant renewable energy sources. This energy is a leading renewable energy source, contributing significantly to sustainable development goals. In grid-connected photovoltaic (PV) systems, reactive power management is essential for maintaining voltage stability and ensuring reliable operation. However, the influence of fluctuating solar irradiation (G) on reactive power (Q) behavior is often underrepresented in conventional inverter control strategies. This research addresses this gap by modeling the dependence of reactive power on solar irradiance using a data-driven curve-fitting approach. The methodology involves the acquisition of real-world operational data, preprocessing, selection of an appropriate analytical model, and validation of its performance. The findings indicate that reactive power increases under low irradiance conditions, primarily due to inverter behavior and grid voltage support requirements. The resulting analytical expression offers a practical framework for integrating irradiance-dependent reactive power control into inverter firmware or grid management software. The model performed with high accuracy with an R2 of 0.9955. This contribution enhances the ability of PV systems to respond dynamically to environmental changes, improving grid compatibility, operational efficiency, and voltage regulation in modern distributed energy networks
Eyyubî Döneminde Kudüs'teki Dini Azınlıkların Durumu (583-648 1187-1250)
No full textBu çalışma, Eyyubîler döneminde (583–648 H / 1187–1250 M) Kudüs şehrindeki dini azınlıkların durumunu tarihsel ve analitik bir yaklaşımla incelemektedir. Araştırma, özellikle Selahaddin Eyyubî'nin Haçlı işgalinden Kudüs'ü kurtarmasından sonra başlayan döneme odaklanmaktadır. Çalışmanın amacı, Müslümanlarla Hristiyan ve Yahudi azınlıklar arasındaki ilişkilerin niteliğini ve Eyyubî devletinin bu azınlıklara siyasi, sosyal, ekonomik ve dini açıdan nasıl yaklaştığını ortaya koymaktır. Bu bağlamda araştırma, özgün tarihî kaynaklara ve güvenilir akademik referanslara dayanarak, Haçlı yönetiminin sona ermesiyle dini azınlıkların durumunda meydana gelen değişimleri incelemektedir. Haçlı dönemi özellikle Yahudilere yönelik katliam ve zorunlu göçlerle anılan, hoşgörüsüz ve baskıcı bir dönemdi. Araştırma, Selahaddin Eyyubî'nin, Kudüs'teki yaşamı İslami hoşgörü ilkelerine dayalı olarak nasıl yeniden düzenlediğini ortaya koymaktadır. Selahaddin, Hristiyanların kiliselerini muhafaza etmelerine ve dini ibadetlerini yerine getirmelerine izin vermiş, Yahudilere ise Haçlı dönemi boyunca yasaklanan Kudüs'e geri dönme izni vermiştir. Araştırma ayrıca Selahaddin'den sonraki Eyyubî haleflerinin dini azınlıklara yönelik izlediği politikaları ve bu politikaların zaman içindeki değişimini incelemekte; söz konusu politikaların azınlıkların sosyal, ekonomik ve kültürel yaşamına etkilerini analiz etmektedir. Çalışma, Eyyubî döneminde 'ehl-i zimmet' sistemi çerçevesinde dini azınlıkların hukuki statüsünü, Ömerî şartların uygulanış biçimini ve bu azınlıklara tanınan imtiyazlar ile getirilen kısıtlamaları da değerlendirmektedir. Araştırmanın amacı, ideolojik önyargılardan veya taraflı yorumlardan uzak, Eyyubî döneminde Kudüs'teki dini azınlıkların durumuna dair bütüncül ve doğru bir tablo sunmaktır. Bu doğrultuda, araştırma özgün tarihî kaynaklar ve güvenilir bilimsel literatüre dayanmakta; Kudüs'ün dini ve sosyal tarihinin daha derinlemesine anlaşılmasına katkı sunmayı ve İslamî tarih boyunca şehirde zaman hüküm süren dinî birlikte yaşama modelini öne çıkarmayı hedeflemektedir. Anahtar Kelimeler: Dini Azınlıklar, Kudüs Şehri, Eyyubî Dönemi, Haçlı İşgali, Selahaddin EyyubîThis study presents a historical and analytical examination of the conditions of religious minorities in the city of Jerusalem during the Ayyubid period (583–648 AH / 1187–1250 CE). This era followed the liberation of the Holy City from Crusader occupation by Sultan Salah al-Din al-Ayyubi. The research seeks to shed light on the nature of relationships between Muslims and religious minorities, namely Christians and Jews, and to explore how the Ayyubid state dealt with these minorities on political, social, economic, and religious levels. The study is based on original historical sources and reliable academic references to analyze the transformations that occurred in the conditions of religious minorities after the end of Crusader rule, which was marked by fanaticism and persecution—particularly against Jews, who were subjected to killings and forced displacement. The research highlights how Salah al-Din reorganized life in Jerusalem based on an Islamic vision rooted in the principles of religious tolerance. He allowed Christians to retain their churches and practice their religious rituals, and he lifted the ban on Jewish residence in the city, permitting them to return after being prohibited during the Crusader occupation. Furthermore, the study examines the policies adopted by Salah al-Din's Ayyubid successors toward religious minorities and the changes these policies underwent throughout the Ayyubid rule of Jerusalem. It analyzes the impact of these policies on the social, economic, and cultural life of the minorities. The research also explores the legal status of religious minorities under the system of Ahl al-Dhimma, the application of the Pact of Umar during the Ayyubid era, and the privileges and restrictions imposed on these communities. The objective of the study is to present a comprehensive and accurate picture of the status of religious minorities in Jerusalem during the Ayyubid period, free from ideological bias or unobjective interpretations. By relying on primary historical sources and established scholarly works, the research aims to contribute to a deeper understanding of Jerusalem's religious and social history and to highlight the model of interreligious coexistence that prevailed in the city during certain periods of its Islamic history. Keywords: Religious Minorities, City of Jerusalem, Ayyubid Period, Crusader Occupation, Salah Al-Din Al-Ayyubi
Ameliorative Effects of Agomelatine Against Doxorubicin-Induced Hepatotoxicity
No full textDrug-induced hepatotoxicity is a significant impediment to the use of doxorubicin, a commonly employed chemotherapeutic agent with established efficacy in cancer treatment. The present study aimed to determine the potential protective effects of agomelatine against doxorubicin hepatotoxicity in rat toxicity models. Thirty-two rats were divided into four groups: control (with saline administration), Doxo (with 40 mg/kg doxorubicin administration), Doxo + Ago20, and Doxo + Ago40 (with 20 and 40 mg/kg agomelatine administration and 40 mg/kg doxorubicin administration). On the day of 14 rats were sacrificed, samples were collected for comparison of immunohistochemical, hematological, and biochemical analysis. There were statistically significant differences between the study groups in terms of immunohistochemical, hematological, and biochemical parameters. Agomelatine administration reduced the TNF-alpha, and caspase-3, which increased by doxorubicin, and reversed levels of oxidative stress markers altered by doxorubicin (p < 0.05). Doxorubicin induces oxidative stress, apoptosis, and hepatotoxicity. Agomelatine may be favored as a primary antidepressant to mitigate hepatic damage induced by doxorubicin.Alanya Alaaddin Keykubat University Scientific Research Projects Coordination OfficeThe authors gratefully acknowledge the Alanya Alaaddin Keykubat University Scientific Research Projects Coordination Office for financial support and Halil Asci, Mehtap Savran, Fatma Nihan Cankara, & Idot;brahim Aydin Candan, and Yasemin Sahin for contributions. The preliminary data of this research were presented in summary at the 4th International GAP Mathematics-Engineering-Science and Health Sciences Congress in 2020
A Worker's Suicide as the Collapse of Masculinity: the Analysis of the Movie "My Father's Wings”
No full textMy Father's Wings by K & imath;van & ccedil; Sezer (2016) shows us how loneliness and desperation are experienced, based on a case of a Turkish construction worker. This article analyzes the film My Father's Wings using the film sociology methodology and focusing on gender and the approach of the Turkish cinema industry that has emphasized emotions after the 2000s. The intertwined experiences of masculinity crisis and being a worker are discussed by articulating Turkish cinema and Turkey's social and political dynamics in the analysis of the film. Based on the film, the collapse of the two pillars on which masculinity is built as the head of the family and the master worker and individualization in the working class and society in general are discussed within the political and social atmosphere that resulted in everyone's withdrawal to their own world
Determining the Effect of Tourists' Perceptions of Authenticity on Their Satisfaction Level and Intention to Revisit: Mardin Example
No full textMardin yıllar boyunca ev sahipliği yaptığı toplumların etkisi ile birçok açıdan otantik olarak nitelendirilebilecek bir şehir olarak görülmektedir. Şehir hem mimarisi hem de kültürel özelikleri bakımından birçok çekicilik unsuruna sahiptir. Turizm sektörünün önemli bir parçası olan yiyecek ve içecek işletmelerinin bazıları Mardin'in tarihi mekanlarında hizmet vermektedir. Çalışma kapsamından ilin önemli gelir kaynaklarından biri olan tarihi mekanlarda bulunan yiyecek ve içecek işletmelerinin ziyaret eden turistlerin otantiklik algıları (fiziki çevrenin otantikliği, yemeğin otantikliği ve müziğin otantikliği), memnuniyet düzeyleri ve yeniden ziyaret etme niyetleri belirlenmiştir. Çalışma kapsamında söz konusu işletmelerden hizmet alan 404 turiste anket uygulanmıştır. Katılımcıların demografik özelikleri incelendiğinde kadın ve erkek katılımcı sayılarının birbirine yakın olduğu, yaklaşık yarısının lise mezunu olduğu, büyük bir kısmının özel sektörde çalıştığı ve %92.33'ünün gelir seviyesinin 40000TL'nin altında olduğu belirlenmiştir. Katılımcıların eğitim durumu değişkeni ile fiziki çevrenin ve yemeğin otantiklik algısı arasındaki farkın anlamlı olduğu belirlenmiştir (p0,05). Sonuç olarak tarihi mekanlarda hizmet veren yiyecek ve içecek işletmelerin ziyaretçiler tarafından otantik olarak algılandığı ancak bu unsurların memnuniyet ve yeniden ziyaret etme niyeti üzerinde etkisinin olmağı bulunmuştur.Mardin is considered an authentic city in many ways, influenced by the communities it has hosted over the years. The city boasts numerous attractive elements in terms of both its architecture and cultural characteristics. Some of the food and beverage establishments, an important part of the tourism sector, operate in Mardin's historical sites. The study aimed to determine the authenticity perceptions (authenticity of the physical environment, authenticity of the food, and authenticity of the music), satisfaction levels, and revisit intentions of tourists visiting food and beverage establishments located in historical sites, a significant source of income for the province. A survey was administered to 404 tourists who received service from these establishments. An examination of the demographic characteristics of the participants revealed that the numbers of male and female participants were similar, with approximately half of them high school graduates, a large portion working in the private sector, and 92.33% having an income level below 40,000 TL. The difference between the participants' educational status variable and the perception of authenticity of the physical environment and food was found to be significant (p0.05). Consequently, it was found that food and beverage establishments serving historical sites were perceived as authentic by visitors, but these elements had no impact on satisfaction and revisit intention
Bioactive Profile, Anticarcinogenic, Antimicrobial, Antidiabetic Effects, and in Silico Pharmacokinetic Properties of Astragalus Elatus
No full textAkan, Hasan/0000-0002-3033-4349; Ercan, Leyla/0000-0002-6570-8128Because of the numerous useful components they contain, plants are significant resources that are being explored for their varied purposes in industry, food, and medicine. Recently, particularly endemic species have gained attention with the identification of their different ingredients and characteristics and the exploration of their precious features. This research assessed the endemic species Astragalus elatus's bioactive components utilizing UHPLC-Orbitrap (R)-HRMS, its antibacterial qualities utilizing the disc diffusion method, its cytotoxic impact on cervical cancer utilizing the MTT method, and its apoptosis effect by annexin V methods. Additionally, Astragalus elatus's antidiabetic activity was revealed by in silico and in vitro examinations of its inhibitory effect on the enzymes alpha-Amylase and alpha-Glucosidase. Consequently, it was discovered that A. elatus can be utilized in the treatment of cervical cancer and has effective cytotoxic and apoptotic effects on HeLa cells. Additionally, it was detected that A. elatus possesses antibacterial and anti-diabetic properties. Compared to gram-negative bacteria, A. elatus had a greater inhibitory effect on gram-positive bacteria. The pharmacokinetically significant characteristics and their tendency for chemical reactions of this plant's primary phenolic compounds were identified by utilizing DFT, molecular docking, and ADME/T
Skin Lesion Classification Using Focal Modulation Networks
No full textThe automatic classification of dermoscopic images is essential for the early diagnosis and treatment of skin cancer. However, this task remains challenging due to high visual similarity among lesion types, variations in lesion appearance across progression stages, and the presence of artifacts in the images. While deep learning-based approaches have outperformed traditional machine learning methods, many existing models are computationally intensive and offer limited interpretability. These limitations hinder their integration into clinical workflows where efficiency and transparency are critical. In this study, I propose a framework based on focal modulation networks (FMNs) for skin lesion classification. FMNs are designed to efficiently capture both local and global features, addressing the limitations of transformer-based models in processing high-resolution medical images. I evaluate four FMN variants, namely, Tiny, Small, Base, and Large, on three public datasets: ISIC 2017, ISIC 2018, and ISIC 2019. The highest classification accuracy was obtained on ISIC 2019 with 97.8%, followed by 96.4% on ISIC 2018, and 88.1% on ISIC 2017. These results match or exceed those reported in several previous studies. Additionally, FMNs offer model interpretability through modulator visualization. Overall, the proposed method provides an accurate, efficient, and transparent solution for automated skin lesion classification. © 2025 The New York Academy of Sciences
Investigation of Biosynthesis, Characterization and Biological Activities of Selenium Nanoparticles from Cuscuta (cuscuta Ssp.) Aqueous Extract
No full textBu yüksek lisans tez çalışmasında, Küsküt otu (Cuscuta ssp.) bitkisinin sulu özütü kullanılarak çevre dostu bir yöntem olan yeşil sentez yoluyla selenyum nanopartiküllerinin (SeNP) biyosentezi gerçekleştirilmiş, elde edilen nanopartiküllerin karakterizasyonu ve biyolojik aktiviteleri detaylı olarak incelenmiştir. Geleneksel kimyasal yöntemlere alternatif olarak tercih edilen bu biyolojik yaklaşım; düşük maliyetli, toksik olmayan ve sürdürülebilir bir üretim modeli sunmaktadır. Bitki özütünde bulunan fitokimyasal bileşikler, hem indirgeme ajanı hem de stabilizatör olarak görev almıştır. Sentezlenen SeNP'ler, UV-Görünür spektrofotometre, X-Işını Difraksiyonu (XRD), Taramalı ve Geçirimli Elektron Mikroskobu (SEM, TEM), Fourier Dönüşümlü Kızılötesi Spektroskopi (FT-IR) ve Enerji Dağılımlı X-Işını (EDX) analizleriyle karakterize edilmiştir. Analizler sonucunda SeNP'lerin kristal yapıya sahip olduğu, ortalama absorbans değerlerinin 317.57 nm'de gözlendiği ve küresel morfoloji gösterdiği saptanmıştır. EDX analizinde selenyumun yanı sıra karbon ve oksijen elementlerinin varlığı, nanoparçacıkların bitkisel kökenli bileşenlerle kaplandığını göstermiştir.Nanoparçacıkların biyolojik etkinlikleri kapsamında, antikanser ve sitotoksik etkileri MTT testi ile değerlendirilmiştir. Yapılan in-vitro deneyler, SeNP'lerin L929 ve HT29 hücre hatlarında doza ve süreye bağlı olarak anlamlı düzeyde hücre canlılığını baskıladığını ortaya koymuştur. En yüksek konsantrasyon uygulamasında, ilk 48 saatte L929 hücrelerinde %20.81, HT29 hücrelerinde ise %58.08 oranında canlılık düzeyinin azaldığı gözlemlenmiştir. Bu durum, SeNP'lerin potansiyel bir antikanser ajan olarak değerlendirilebileceğini göstermektedir.In this master's thesis, selenium nanoparticles (SeNPs) were biosynthesized through an eco-friendly green synthesis approach using aqueous extract of Cuscuta spp. (dodder plant), and their characterization as well as biological activities were thoroughly investigated. As an alternative to conventional chemical synthesis methods, this plant-mediated technique offers a low-cost, non-toxic and sustainable strategy. Phytochemicals present in the plant extract acted both as reducing and stabilizing agents during the synthesis process. The synthesized SeNPs were characterized using various techniques including UV-Visible spectrophotometry, X-ray diffraction (XRD), Scanning and Transmission Electron Microscopy (SEM, TEM), Fourier Transform Infrared Spectroscopy (FT-IR) and Energy Dispersive X-ray Spectroscopy (EDX). Characterization results confirmed that the SeNPs possessed crystalline structure, exhibited a maximum absorbance peak at 317.57 nm, and showed spherical morphology. EDX analysis also revealed the presence of carbon and oxygen along with selenium, indicating phytochemical capping on the nanoparticles. The biological activities of the SeNPs were assessed through in-vitro cytotoxicity tests (MTT assay) focusing on their anticancer potential. Results showed that SeNPs significantly reduced cell viability in L929 and HT29 cancer cell lines in a dose -and time- dependent manner. At the highest concentration tested, cell viability decreased to 20.81% in L929 cells and 58.08% in HT29 cells after 48 hours of exposure, highlighting the cytotoxic efficiency of the SeNPs
Peer Education Versus Traditional Education on Psychomotor Skills and Self-Efficacy in Nursing Students: A Single-Blind Randomized Controlled Trial
No full textBackground Peer education (PE) refers to the process of individuals being educated by their peers, that is, people with similar experiences or statuses. This study aimed to evaluate the effects of PE on the psychomotor skills and self-efficacy of nursing students. Methods This single-blind randomized controlled trial was conducted with 63 undergraduate nursing students. Data were collected using the "Individual Descriptive Information Form", "Intramuscular Injection Knowledge Level Assessment Form", "Intramuscular Injection Psychomotor Skills Assessment Form", and the "General Self-Efficacy Scale". Descriptive statistics (numbers, percentages, means, standard deviations, and min-max values) were used. The independent samples t-test and Mann-Whitney U test were used to analyze differences between groups. Results The mean age of the participants was 21.22 +/- 0.85 years (range: 20 - 23), and 52.4% were female. No statistically significant differences were found between the groups in pretest, posttest, or self-efficacy scores (p > 0.05). However, the psychomotor skill levels differed significantly between the groups (p < 0.001), with the intervention group scoring higher than the control group. Conclusions Nursing students who received PE demonstrated significantly better psychomotor skills than those taught using traditional methods. It is recommended to integrate interactive learning strategies such as PE, where students can express themselves more freely and actively engage in the learning process, especially in nursing education areas requiring the development of psychomotor skills.Mardin Artuklu UniversityThe authors would like to thank the nursing students who participated in the study
The Roles of Body Image, Drive for Muscularity, and Spiritual Well-Being in the Relationship Between Disordered Eating and Exercise Addiction Among Sports Science Students: A Moderated Model
No full textBackgroundThis study aims to evaluate the roles of drive for muscularity, body image perception, and spiritual well-being in the relationship between exercise addiction and disordered eating.MethodsThe research was designed as a cross-sectional study and included 408 students enrolled in the Faculty of Sport Sciences at various public universities in T & uuml;rkiye. Data were collected using a socio-demographic information form, the Eating Behavior Disorder Scale, the Drive for Muscularity Scale, the Exercise Addiction Scale, the Spiritual Well-Being Scale, and the Body Image Scale.ResultsThe findings revealed that exercise addiction is linked to disordered eating through the mediating role of the drive for muscularity. This indirect relationship changes depending on levels of body image and spiritual well-being. Specifically, the effect of the drive for muscularity on disordered eating was strongest among individuals with low body image and low spiritual well-being. In contrast, when body image was at low or moderate levels and spiritual well-being was high, this effect was no longer significant.ConclusionsThe findings indicate that negative body image and spiritual well-being are key correlates of disordered eating and exercise habits. In addition, these findings emphasize the importance of maintaining psychological and physical balance, particularly in sports science students who are under high pressure in terms of athletic performance