Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Uzun, Sevda(77)
- Merdan, Mehmet(73)
- Duran, Celal(54)
- Ozdes, Duygu(50)
- Baltaci, Cemalettin(45)
- Kaygusuz, Abdullah(45)
- Kulakaç, Nurşen(39)
- Ashyralyyev, Charyyar(38)
- Karsli, Orhan(37)
- Demir, Selim(36)
- Öztürk, Serkan(36)
- Dokuz, Abdurrahman(35)
- Turan, Ibrahim(35)
- Araz, Onur(33)
- Kandemir, Raif(31)
- Sipahi, Ferkan(30)
- Topal, Fevzi(30)
- Kurt, Kemal(28)
- Peker, Iskender(28)
- Arslan, Mehmet(27)
- Baltacı, Cemalettin(27)
- Maden, Nafiz(27)
- Ozturk, Samet(27)
- Aydin, Aydanur(26)
- Vural, Alaaddin(26)
- Bayrakdaroglu, Serdar(25)
- Kurnaz, Muammer(25)
- Reis, Hatice Catal(25)
- Akar, Zeynep(24)
- Aydin, Faruk(24)
- Gücer, Mehmet Ali(24)
- Topal, Meryem(24)
- Yolcu, Halil(24)
- Yücel, Cem(24)
- Anaç, Halil(23)
- Kankal, Murat(23)
- Ürkek, Bayram(23)
- Aliyazicioglu, Yuksel(22)
- Günen, Mehmet Akif(22)
- Tuncer, Metin(22)
Yayınlar
- MakaleYalnız künye2025Assessment of Türkiye’s renewable energy, economic growth, and emissions (2000-2021): A decision-making approach with MAXC and MUTRISS models
Macit, Nazife Sahin
This study investigates Türkiye’s performance in renewable energy utilization, economic growth, and carbon emissions between 2000 and 2021 through the application of multi-criteria decision-making (MCDM) methods. By employing MAXC and MUTRISS as decision-making models, this study facilitates the integrated assessment of economic development and environmental sustainability objectives. The MAXC-based analysis identifies economic growth (GDP) as the most influential criterion aligned with national development objectives, while environmental sustainability emerges as a secondary yet essential component. Renewable energy consumption is underscored as a fundamental element of sustainable development. The MUTRISS findings indicate that Türkiye exhibited its highest overall performance in 2004, whereas 2007 and 2008 were marked by the lowest performance levels, potentially reflecting the adverse effects of economic downturns and environmental pressures. To validate the robustness of the applied methods, comparative analyses were conducted with other MCDM techniques. Spearman rank correlation results reveal strong concordance between MAXC and objective weighting methods such as Entropy, MPSI, and IDOCRIW, while showing a negative correlation with CILOS. Conversely, MUTRISS demonstrated moderate positive correlations with PIV, SAW, and CoCoSo, indicating relatively lower ranking consistency. The findings contribute to the methodological evaluation of MCDM tools and emphasize the importance of integrated economic–environmental policy approaches in sustainability assessments.
- MakaleAçık Erişim2025Scopus SJRQ4Limitations of conversion factor approaches in the synthesis of complex oxide superconductors: a case study on Y123 and Y358
Aktaş, İbrahim
Accurate precursor calculation is essential for the successful synthesis of oxide-based superconductors. This study compares two commonly used methods stoichiometric balance and conversion factor (CF) approaches in the synthesis of YBa2Cu3O7-δ (Y123) and Y3Ba5Cu8O18+δ (Y358) superconductors. The analysis reveals that CF methods introduce substantial systematic errors, particularly for Y2O3, with deviations reaching 21.2% in Y123. These errors are exacerbated in Y358 due to its increased stoichiometric complexity. Unlike stoichiometric methods, CF approaches neglect volatile losses such as CO2 and fail to adjust for oxygen non-stoichiometry (δ variations), leading to misestimations in precursor masses. Statistical tests (χ2 < 0.001, RMSE) and experimental data confirm that these inaccuracies can negatively impact phase purity and crystallographic quality. A strong correlation (R2 = 0.847) between stoichiometric accuracy and phase formation quality emphasizes the importance of rigorous calculation. This study highlights the inherent limitations of CF-based shortcuts and underscores the necessity of comprehensive stoichiometric modeling, especially in complex oxide systems. The findings also provide an educational framework to address common misconceptions in materials synthesis, particularly for early-stage researchers in solid-state chemistry and materials science.
- MakaleYalnız künye2025Economic Development in Türkiye, The Effects of Financial Development on Environmental Sustainability: The Role of Load Capacity Factor
Durmuş, Savaş; Akyol, Hikmet; Ağırkaya, Melahat Batu
This research examined the long and short-term effects of economic growth and financial development on environmental sustainability for the Turkish economy in the period between 1982 and 2022. In this context, he analyzed the effects of social and demographic variables. In the study, the effects of economic growth, financial development, and socio-demographic variables on the load capacity factor (LCF) were estimated using the distributed autoregressive (ARDL) bounds test approach. Our results revealed that economic development for Türkiye is an important determinant of environmental sustainability in both the long and short term. Especially in the long run, economic development promotes environmental sustainability. In this respect, encouraging financial policies supporting economic and environmental sustainability will contribute both to environmental sustainability and to Turkey's sustainable development efforts.
- MakaleAçık Erişim2025A General Assessment of the Retail Price Premiums of Organic Food Products in Türkiye
Adanacioglu, Hakan; Doğan, Nilgün
Organic agricultural production has emerged as an alternative to conventional production and aims to promote a sustainable production approach based on the health of soil, the protection of nature and human well-being factors with an environmentally friendly production method. Organic production combines traditional knowledge with scientific innovation to benefit the natural environment and promote a higher quality of life for all. Organic agricultural products, which have gained significant market share globally and expanded into various markets, are mainly produced for export in Türkiye. The growth of the organic market depends on the balance between supply and demand. In this respect, the aim of this study is to examine the product market prices, which is a key factor affecting the purchasing behaviour of consumers in order to grow the organic market and reach the desired level. Price premiums were examined for the following food groups: cereals/legumes, fruit, vegetables, milk, dairy products and eggs, dried fruit and nuts. This study relies on secondary data and retail prices were collected through online websites. According to the results, the price premium, which was calculated by comparing the prices of organic and conventional versions of selected food products, was found to be in favour of organic products. This price premium was found to be particularly high for noodles, dry beans, buckwheat and rice from the cereals/legumes group; grapefruit, apple and pear from the fruit group and yellow chickpeas, pumpkin seeds from the nuts group. These results provide useful insights for food producers, marketers and policy makers when making decisions about organic food.
- MakaleAçık Erişim2025Emergency Aid And Disaster Management Students' Experience With The February 6, 2023 Kahramanmaraş Centered Earthquake: A Qualitative Study
Tatli, Yasemin; Cengiz, Sevil; Kent, Nurçin Küçük; Çolak, Ayse
Sharing the disaster experiences of individuals helps to better understand the psychological effects that disasters can have on people. The earthquake cente-red in Kahramanmaraş on February 6, 2023 caused many people to be directly or indirectly affected psychologically. In this study, the psychological effects and experien-ces of the process were shared by the Department of Emergency Aid and Disaster Management students between the ages of 21-26, who participated in volun-teer activities in the disaster area and were directly or indirectly exposed to the February 6 earthquake. For this purpose, students were asked to draw three open-ended questions and a picture about the first topic that came to their minds about disaster experiences in order to learn about their disaster experiences by applying the qualitative method study method. The obtained data were evaluated using the MaXQDA qualitative data analysis program. From a behavioral point of view, students are directly or indirectly affected by this disaster, deaths and difficult and limited conditions physically, emotio-nally and behaviorally; In particular, it has been ob-served that the importance of staying calm without panicking and the selection of solid buildings come to the fore. In addition, it is suggested that the use of art therapy applications in further explaining the psychological impact caused by the disasters may be useful in further detailing the conditions that cannot be put into words in terms of disasters and that furt-her studies by experts may be useful in this regard.
- MakaleAçık Erişim2025Okul Öncesi Öğretmenlerinin Otizm Algılarının Nöroçeşitlilik ve Medikal Metafor Bağlamında İncelenmesi
Y.çakıroğlu, Tuğba; Akgul, Esra Macaroglu; Alperen; Bülbül, Nurullah; Bülbül, Onur; Çınar, Dilek; Turan, Evren Deniz; Arslan, Semiha
Bu çalışma, otizm spektrum bozukluğuna (OSB) yönelik algıları ve okul öncesi öğretmenlerin otizmli bireylerle ilgili deneyimlerini nöroçeşitlilik perspektifi ve medikal metafor bağlamında incelemektedir. Araştırmada öğretmen görüşleri, YouTube içerikleri ve sivil toplum kuruluşlarının (STK) yaklaşımları analiz edilmiştir. Nitel araştırma yöntemiyle yürütülen çalışmada yarı yapılandırılmış görüşme formu kullanılmış, veriler içerik analiziyle MAXQDA yazılımı aracılığıyla çözümlenmiştir. Bulgular, nöroçeşitlilik yaklaşımını benimseyen öğretmenlerin otizmi nörolojik bir farklılık ve toplumsal zenginlik olarak, medikal metaforu benimseyenlerin ise bir bozukluk olarak değerlendirdiğini göstermektedir. Öğretmenlerin bireyselleştirilmiş yöntemler, materyal uyarlamaları ve akran desteği gibi stratejiler kullandıkları; ancak sınıf yönetimi, veli iletişimi ve materyal eksikliği konularında sorun yaşadıkları belirlenmiştir. Dijital platformlar ve STK’lar farkındalığı artırmakla birlikte otizmi çoğunlukla medikal bakış açısıyla ele almaktadır. Sonuç olarak, otizme dair toplumsal farkındalığın güçlendirilmesi, nöroçeşitlilik anlayışının yaygınlaştırılması ve kapsayıcı eğitim uygulamalarının geliştirilmesi önerilmektedir.
AtıfOpenAlex1
İncele - MakaleAçık Erişim2025Evaluation of Transformational Leadership Characteristics of Healthcare Managers
Özcan, Koç; Tunç, Faruk
Purpose – The primary purpose of this research is to evaluate the transformational leadership characteristics of healthcare managers. For this purpose, an application was made to a public hospital in Ankara. Design/methodology/approach – In the research, a questionnaire consisting of the leadership scale was used. The research was conducted on 434 participants. The population of this research consists of physicians, nurses, midwives, and other health workers working in the public hospital where the research was conducted. Participants were asked to evaluate the transformational leadership characteristics of the managers they report to. Results – At the end of the research, it was found that the leadership scale used in the study had high reliability (α = 0.989) and a strong factor structure (KMO = 0.979, total variance explained = 83.4%). Moreover, it was determined that there was no significant difference in the perceptions of transformational leadership between female and male employees and between managers and non-managers. However, it was determined that the differences in the education level, age, and length of service in the ınstitution of healthcare workers did not affect their perceptions of transformational leadership. In addition, the participants stated that their managers had a medium level of transformational leadership. Discussion – In the research, health workers stated that their immediate managers exhibited moderate leadership characteristics (mean score=3,64). According to this result, managers need to improve their transformational leadership characteristics. This situation can be corrected with training. The management of health institutions is quite tricky due to their complex organizational structure. In addition, health institutions operate in a rapidly changing and transforming environment. Therefore, for health institutions to succeed, they must be managed by transformational leaders. In addition, health managers with leadership skills should improve themselves through training.
- MakaleYalnız künye2025Implications for Human Resources Management from Labour Force Participation Rates of Countries by Education Level
Sımsek, Tugçe
Labour force participation rates are a key indicator of economic structure, human capital development, and employment dynamics, with education level playing a crucial role in shaping workforce accessibility and productivity. This study examines the labour force participation rates across different education levels (basic, intermediate, high) in 34 European and surrounding countries between 2015 and 2023, aiming to provide strategic insights for human resources management (HRM). Using a quantitative approach, the study employs descriptive statistics and K-means clustering to analyse workforce segmentation, while Silhouette Scores assess the degree of convergence among countries over time. The findings indicate a significant decline in Labour force participation among individuals with lower education levels, particularly in countries such as Croatia and Latvia, whereas participation rates for highly educated individuals remain relatively stable. Additionally, clustering results suggest a gradual convergence in labour force dynamics, with certain countries shifting between clusters, reflecting structural shifts in workforce composition. These results highlight the need for targeted reskilling programs, flexible employment models, and education-driven labour policies to mitigate participation disparities. The study underscores the importance of international talent mobility, workforce digitalisation, and skill development initiatives in optimising HRM strategies. By providing an education-based labour market analysis, this research contributes to data-driven workforce planning and global HRM decision-making.
- MakaleAçık Erişim2025The evolutionary path of health expenditure research: unveiling dynamic insights through topic modeling
Demır, Hüseyın; Karaer, Merve; Uruş, Ali Fuat
The increasing burden of healthcare services on national economies has made understanding the dynamics of health expenditure a crucial issue. Therefore, there is a need to analyze the complex and interdependent patterns of these dynamics. The aim of the study is to identify the key themes in the literature related to health expenditure and examine the relationships between them. A total of 3,449 scientific publications were obtained from the Web of Science database, and topic modeling was conducted using the Latent Dirichlet Allocation model. As a result, the themes related to health expenditure were identified as health economics and policy, healthcare services and research, patient care and health outcomes, and healthcare cost and utilization. The findings emphasize the importance of adopting cost-effective practices, improving service processes, and integrating health outcomes into healthcare service processes for effective management of health expenditure. Additionally, the study shows that topic modeling provide valuable insights for policymakers in the healthcare sector and that machine learning approaches can lead to more scalable and efficient solutions in healthcare domain.
- MakaleAçık Erişim2025Bibliometric analysis of publications titled culinary arts scanned in the Web of Science database
Ödemiş, Murat
This study aims to conduct a bibliometric analysis of publications on culinary arts indexed in the Web of Science (WOS) database using the VOSviewer programme. In this context, bibliometric analysis method was utilized in the study. Within the context of the study, co-authorship analysis, analyses of keywords used by authors, analyses of citations to authors, institutions, and countries, bibliographic matching analyses of publications, authors, institutions, and countries, and co-citation analysis of authors were performed on data obtained from the Web of Science database. Network and density maps of the analysis results were drawn. According to the outcomes obtained in the research, it was ascertained that two groups of seven people cooperating in terms of joint publications were the groups with the highest number of members, the keyword ‘culinary arts’ was used the most by the authors, certain authors, institutions, and countries ranked first in terms of the number of publications and citations, and Kokoszko and Lee were the authors with the highest number of co-citations. Since there is no bibliometric research on publications with the title “culinary arts” indexed in the Web of Science database, the outcomes of this study have the potential to serve as an important reference for future research and to contribute to the literature.
- MakaleAçık Erişim2025Challenging Neo-Orientalism: Muslim Identity and the Israel-Palestine Conflict in Teju Cole's Open City
Yalcin, Elif Guvendi
This article explores Teju Cole's Open City (2011) as a profound critique of neo-Orientalist discourses in the post-9/11 era, focusing on Farouq, an Arab-Muslim intellectual in Brussels. Grounded in Edward Said's Orientalism and Hamid Dabashi's neo-Orientalism, the analysis reveals how Farouq resists Western pressures to assimilate or enact commodified versions of his identity, challenging the persistent demand for "oriental fantasy" narratives. The novel situates Farouq's personal struggles within geopolitical tensions, notably the Israel-Palestine conflict, which characters frame as a defining contemporary issue. This perspective counters neo-Orientalist assertions that attribute Middle Eastern instability to inherent cultural flaws, instead critiquing Western imperialism and media distortions. The study contrasts Farouq's revolutionary consciousness with Dr. Maillotte's liberal dismissal of his grievances, exposing subtle neo-Orientalist mechanisms that mask structural inequities under a veneer of openness. Through its dialogic structure and reflective narrator, Julius, Open City fosters authentic intercultural exchange, disrupting monolithic portrayals of Muslim identities. The article argues that Cole's narrative not only contests reductive stereotypes but also positions literature as a vital medium for advocating equitable identity representations in a globalized world. By centering Farouq's intellectual agency and experiences, the study contributes significantly to understanding identity politics and representation in postcolonial literature, underscoring the enduring relevance of Said's critique in contemporary global discourses.
- MakaleAçık Erişim2025Rus İslamı Sorunu: Kültürel Sosyolojik Bir Analiz
(Alieva), Vildane Özkan; Dinç, Artum
Bu makale, Rus devletinin dil politikası, devlet denetimindeki dinî kurumlar ve yönetilen söylem aracılığıyla Müslüman kimliğini ve dinî pratikleri nasıl yeniden biçimlendirilmeye çalıştığını incelemektedir. Bu çabalar, Rusya’nın Müslüman nüfusunu birleşik bir ulusal kimliğe entegre etmeye yönelik daha geniş bir projenin parçasıdır. Çalışma, Bourdieu’nun simgesel güç kavramı, kültürel yapılandırmacılık ve Gramsci’nin kültürel hegemonya kuramından yararlanan kültürel sosyolojik bir yaklaşım kullanarak, resmi anlatıların ve uygulamaların İslami kimliği Rus ulusal kültürüyle nasıl uyumlu hale getirdiğini araştırmaktadır. Çalışma, Cuma vaazları, müftülerin halka açık konuşmaları, Rusça Kur’an tercümeleri ve İslami bayramlardaki siyasi konuşmalar dahil olmak üzere 2006–2025 yılları arasındaki kaynakların nitel bir içerik analizini yapmaktadır. Bulgular, devlete sadık bir “geleneksel İslam”ı teşvik ederek İslam’ı Rus mirasının ve vatanseverlik değerlerinin ayrılmaz bir parçası olarak yeniden biçimlendirme yönünde bilinçli bir çabayı ortaya koymaktadır. Devletle uyumlu Müslüman otoriteler, bu sadık anlatıyı beslemek için İslami terminolojiyi ve uygulamaları Rus dil ve kültür normlarına uyarlamaktadırlar. Sonuç olarak, sivil sadakati, dinler arası uyumu ve muhafazakâr değerleri vurgulayan, Ruslaştırılmamış Müslüman kimliğini yabancı veya aşırılıkçı olarak tasvir eden resmi bir İslam söylemi ortaya çıkmıştır.
- MakaleAçık Erişim2025Advanced adaptive control strategies application for speed regulation of a 12V small dc geared motor
Cetin, Gokhan
This paper investigates the implementation and performance of adaptive control techniques for a 12V small geared DC motor characterized by modeling errors and input disturbances. This paper discusses the following two primary approaches: Adaptive Radial Basis Function Neural Network (ARBFNN) Controllers and Model Reference Adaptive Control (MRAC). In model uncertainty, MRAC and ARBFNN outperformed the simple Proportional-Integral (PI) controller. The study is further expanded to involve Robust MRAC and Adaptive Sliding Mode Radial Basis Function Neural Network (ASRBFNN) Controllers to counter the compounded effects of model uncertainty and input disturbances. The versions of the robust controllers performed better than the conventional PI controller in cases involving both uncertainties and disturbances. Implementations were done on a 12V geared DC motor testbed with an Arduino microcontroller and MATLAB's System Identification Toolbox. The results from simulations and experimental applications highlight the greater flexibility and disturbance rejection capability of the developed advanced adaptive control schemes, making them perform better than standard PI controllers under challenging conditions.
- MakaleAçık Erişim2025The Interactive Roles of Frustrations and Religious Attitudes on Aggression
Maraşlıoğlu, Şerife Ericek
Recent data from the Turkish Statistical Institute (TÜİK) reveal a worrisome escalation in aggression rates among young individuals, including incidents of injury, criminal involvement, and criminal activity. In this context, the basic objective of the present study is to examine the moderating effect of religious attitudes on the relationship between frustration and aggressive behavior. The study data were collected through an online cross-sectional survey conducted with 729 participants (523 female, 206 male) randomly selected between the ages of 18 and 25. To collect the data, the Aggression Scale, the Religious Attitude Scale, and the Basic Psychological Need Satisfaction and Frustration Scale were used. The results showed that frustration was positively related to physical aggression, hostility, anger, and verbal aggression. In contrast, religious attitudes were negatively related to physical aggression, hostility, anger, verbal aggression, and frustration. Additionally, religious attitudes played a moderating role in the relationship between frustration and physical aggression and hostility. However, the findings indicated that religious attitude failed to reduce the effect of frustration on anger and verbal aggression. The results of the study indicate that religious attitudes significantly influence the impact of frustrations on tendencies toward anger and verbal aggression. These findings reveal a complex relationship between frustration and aggression, which depends on the degree of religious inclination. In light of these findings, it is recommended that guidance programs based on religious values be developed—within the framework of the existing literature—to help reduce aggression levels among individuals experiencing need frustration.
- MakaleAçık Erişim2025Effect of Homeopathy Intervention on Depression in Women: Systematic Review and Meta-analysis of Randomized Controlled Trials
Karakas, Sevda; Karaahmet, Aysu Yıldız; Bilgiç, Fatma Şule
Background and Objectives: The aim of this study was to systematically review randomized controlled trials evaluating the effectiveness of homeopathy intervention given to women on depression and to conduct a meta-analysis of the available evidence. Materials and Methods: Systematic searches of Cochrane, PubMed, SCOPUS, WOS, EMBASE in five databases were conducted between February- March 2025. The risk of bias and the certainty of the evidence were assessed with the Cochrane bias risk tool ROB-2. Summary effect size measurements were calculated using random effects model estimation and reported as standardized mean differences and 95% confidence intervals. Reporting followed PRISMA guidelines. Results: A systematic literature review was conducted with 10 studies included in the analysis. A total of 636 people took part in the studies. Homeopathy intervention had a significant effect on depression (SMD:-0.44, 95% CI:-0.71 to -0.18, Z=3.26, p=0.001), and in the subgroup analysis, it was found to be more effective in women aged 40 years and older than in women aged 40 years (SMD:-0.47, 95% CI: -0.91 to -0.03, Z=2.08, p=0.004). In addition, it was found to have a significant effect on anxiety (SMD:-0.43, 95% CI:-0.69 to -0.17, Z=3.27, p=0.001) and fatigue (MD:-1.58, 95% CI: -2.78 to -0.39, Z=2.59, p=0.009). Conclusions: The study determined that homeopathic intervention in women was effective for depression; It was found that it provided a decrease in anxiety and depression levels. It is important to disseminate homeopathy treatment and ensure accessibility in solving psychological problems such as depression and anxiety that adversely affect women's health.
- MakaleAçık Erişim2025Communication technologies today being a child in the age of artificial intelligence
Bektaş, Ahmet
The aim of this study is a qualitative research to discuss the current communication technologies and what kind of cases these technologies in the digital environment will lead to in children when combined with artificial intelligence applications. Our study discusses today's communication tools. Communication is the most important means of understanding between people. Individuals understand and make sense of each other through communication. Today, communication takes place through social media tools and digital platforms. Children growing up in such an environment face many situations. The advancement of digital technology and the increase in the functionality of artificial intelligence applications today have led to the proliferation of new communication technologies. Artificial intelligence has caused the child to face certain risks and benefits in digital environments as in every field. The child living in such a complex age is inadequate in certain situations. Therefore, artificial intelligence literacy becomes important. Artificial intelligence literacy has always been an important issue in today's social structure. Families and educators have great responsibilities in terms of the importance of artificial intelligence literacy for children growing up in the digital environment. These two important institutions, family and education, act together and have an important position in the development of children, and in short, these two institutions contribute to the social and cognitive development of the child in the age of artificial intelligence.
AtıfOpenAlex1TR Dizin2İncele - MakaleAçık Erişim2025Analysis of Diabetes Complications Model With Time Delays
Merdan, Mehmet; Şişman, Şeyma
In this article, diabetes, a disease known to be influenced by genetic and environmental factors, is divided into two types: diabetes without complications (D) and diabetes with complications (C). The stability of the equilibrium points of this two-dimensional diabetes complication (DC) model, the D and C equations are studied by time delay. In addition, the behavior of the model is obtained with the help of the MATLAB package program.
- MakaleAçık Erişim2025Phytogenic Silver and Copper Nanoparticles from Morus nigra L. Leaf as Multifunctional Agents: Antioxidant, Antidiabetic, Antimicrobial, and Anticancer Potency
Çam Derin, Dilek; Baltaci, Cemalettin; Akmeşe, Osman; Taskin, Irmak Icen; Karpuz, Omer; Gültekin, Enes; Sever, Meryem Rüveyda
The growing need for eco-friendly nanomaterials has directed attention toward plant-based green synthesis as a sustainable approach for biomedical applications. This study reports the biosynthesis of silver (YAgNPs) and copper nanoparticles (YCuNPs) using Morus nigra L. leaf extract and evaluates their multifunctional properties. The nanoparticles were produced under alkaline aqueous conditions, and their crystalline nature and nanoscale morphology were confirmed by standard structural and elemental analyses. Both YAgNPs and YCuNPs exhibited enhanced antioxidant capacities compared to the crude extract. YAgNPs showed the highest ferric reducing antioxidant power (250.33 mg FeSO₄/g), while YCuNPs demonstrated superior DPPH radical scavenging activity (114.12 mg AAE/g). In antidiabetic assays, YAgNPs strongly inhibited α-amylase (IC₅₀ = 112.02 μg/mL) and α-glucosidase (IC₅₀ = 38.27 μg/mL), approaching the potency of acarbose. Antimicrobial analysis revealed distinct activity profiles: YAgNPs were highly effective in broth cultures with low MIC and MBC values (0.09–0.18 mg/mL against B. subtilis and E. coli), whereas YCuNPs achieved larger inhibition zones in diffusion assays. Checkerboard testing confirmed synergistic interactions between nanoparticles and antibiotics, with FICI values ≤0.5 against E. faecium, E. coli, and P. aeruginosa, highlighting their ability to enhance antibiotic efficacy. YAgNPs exhibited notable cytotoxic effects against HeLa and HCT116 cancer cell lines, with IC₅₀ values of 9.84 and 6.83 μg/mL, respectively. In contrast, YCuNPs displayed weaker anticancer activity. Overall, these findings demonstrate that M. nigra derived nanoparticles combine antioxidant, antidiabetic, antimicrobial, and anticancer activities with synergistic antibiotic-enhancing effects, underscoring their potential as sustainable, multifunctional therapeutic agents.
AtıfOpenAlex1İncele - MakaleAçık Erişim2025Sumak ekşisi üretiminde ohmik ısıtma destekli evaporasyonun kullanımı: Kalite parametreleri ve proses koşulları üzerindeki etkileri
Baltaci, Cemalettin; Odabaş, Halil İbrahim; Tunç, Merve Tuğçe
Bu çalışma ile ohmik ısıtma destekli evaporasyonun sumak şurubu üretimi üzerindeki etkilerinin incelenmesi amaçlanmıştır. Bu amaçla hem geleneksel evaporasyon hem de ohmik ısıtma destekli evaporasyon yöntemleri kullanılmıştır. Ohmik ısıtma destekli evaporasyon işleminde 20 V/cm (188 V) ve 25 V/cm (235 V) olmak üzere iki farklı voltaj gradyanı uygulanmıştır. Çalışmada, örneklerin fizikokimyasal parametreleri, HMF (5-hidroksimetilfurfural) miktarları, antioksidan özellikleri, reolojik karakteristikleri ve uygulanan metotların enerji tüketimi ile diğer proses parametreleri incelenmiştir. Ohmik ısıtma destekli ve geleneksel evaporasyon yöntemleriyle üretilen sumak şurupları arasında antioksidan özellikleri veya HMF miktarları açısından önemli bir farklılık bulunmamıştır. Ancak enerji verimliliği açısından incelendiğinde, ohmik ısıtma destekli evaporasyon işlemi sırasında enerji tüketiminin (20 ve 25 V/cm için sırasıyla 121,93±5,98 ve 95,00±3,08 kj), geleneksel yönteme göre (1331,00±101,82 kj) yaklaşık on bir kat daha düşük olduğu hesaplanmıştır. Elde edilen sonuçlar incelendiğinde, ohmik ısıtma destekli evaporasyon ile üretilen sumak ekşilerinin kalite özelliklerini korunurken, enerji tüketimini, CO₂ emisyonlarını ve proses parametrelerinin önemli ölçüde azaldığını göstermiştir.
- MakaleAçık Erişim2025The Bryophyte Flora of Demirkapı Plateau Glacial Lakes (Çaykara, Trabzon) and Its Surroundings
Batan, Nevzat; Erata, Hüseyin; Köroğlu, Zeynep Gizem
In this study, the moss flora of Demirkapı Plateau Glacial Lakes and its surroundings in the Çaykara region of Trabzon were investigated. Bryofloristic study was conducted at 24 different localities during various vegetation periods between 2024 and 2025, and a total of 1060 bryophyte specimens were collected. As a result of the identification of bryophyte specimens 291 bryophyte taxa (244 taxa mosses, 46 taxa liverworts, and 1 taxon hornworts) were identified from the study area. Among the results, Lophozia silvicola, Andreaea alpestris, Andreaea mutabilis, Niphotrichum canescens subsp. latifolium and Sphagnum russowii were recorded for the second time in the bryophyte flora of Türkiye. Furthermore, 43 bryophyte taxa are new for Trabzon Province and 119 bryophyte taxa are new for Çaykara District. Distribution and habitat information is provided for each identified bryophyte taxon.