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Electrochemical Tuning of Ni-Fe Catalysts Using Various Techniques for Efficient Hydrogen Evolution in Alkaline Media
No full textThe search for cost-effective and scalable electrocatalysts for the hydrogen evolution reaction (HER) remains a critical challenge in advancing sustainable energy technologies. This study presents a novel approach to optimizing nickel-iron (Ni-Fe) alloy coatings on graphite (G) electrodes through a strategic combination of composition tuning, nickel modification, and various electrochemical optimizations. Unlike conventional studies, which primarily focus on static alloy compositions, this work systematically investigates the impact of dynamic nickel modification durations on the catalytic performance and conductivity of Ni-Fe alloys. By addressing the conductivity limitations caused by iron oxidation, the study demonstrates the enhanced HER kinetics achieved with a Ni-modified G/Ni%95Fe%5-Ni(60s) electrode. Electrochemical and structural analyses reveal the synergistic effects of nickel modifications on improving active site accessibility, reducing overpotential, and increasing hydrogen production efficiency. This work introduces a scalable methodology for tailoring Ni-Fe catalysts, offering significant advancements in the development of robust, cost-effective electrocatalysts for industrial-scale hydrogen production.Mardin Artuklu University Research Fund Office [MAU.BAP.23.SBF.012]The authors are very grateful to the Mardin Artuklu University Research Fund Office for financial support (Project number: MAU.BAP.23.SBF.012). We are very grateful to Murat FARSAK for his advice. We thank Sibel Dervis for her support
Mardin'in Güncel Kentleşme Pratiklerine ve Kamusal Olanaklarına İlişkin Bir Değerlendirme
No full textMardin, kentsel sit alanı olan Eski Kent ve 1990’lı yıllarla birlikte kentleşme özelliği göstermiş Yeni Kent’ten oluşan farklı iki yerleşme dokusu barındırmaktadır. Sosyo-mekânsal özellikleri, gündelik yaşam ve konut üretme biçimi bakımından farklılaşan bu iki yerleşim bölgesi, 2000 yılından günümüze artan bir ivmeyle farklı amaçlarla ama benzer yıkıcılıkta kentleşme kararlarına maruz kalmaktadır. Bu çalışma, Mardin güncel kentleşme pratiklerine dair bir çerçeve çizmeyi ve kamusal olanakların önemini tartışmayı amaçlamıştır. Kamusal olanakların geliştirilmesinin bir yolu olarak kentteki mikro toplulukların iş birliği yapması ve kentlilerin gündelik pratikleri içinden önerilerin yaratılması önemlidir. Bu topluluklardan biri, kent için fikir ve projeler üreten Mardin Artuklu Üniversitesi Mimarlık Bölümü öğrencilerinden oluşmaktadır. Çalışma yöntemi, saha çalışmasına; sahada gözlem ve araştırmalara dayanmaktadır. Mardin Artuklu Üniversitesi Mimarlık Bölümü 2019- 2020 Bahar Dönemi Mimari Proje 5-6 ve 2020-2021 Güz Dönemi Mimari Proje 4-5 stüdyolarında, mimarlık bölümü öğrencileri tarafından geliştirilen projeler çalışmanın verilerini oluşturmuştur. Sonuç olarak, Mardin’in güncel kentleşmesine dair sorunlar tespit edilmiş ve öğrenciler tarafından geliştirilen projeler ışığında Mardin için yeni kamusal olanaklar tartışılmıştır
Yerel Yemek Deneyiminin Turist Memnuniyeti ve Davranışsal Niyet Üzerinde Etkisi: Van Örneği
No full textSon yıllarda yerel mutfak kültürlerine ve gastronomi turizmi deneyimlerine ilginin giderek artış göstermesi, turistik bir ürün olarak mutfak kültürlerinin çeşitli yönleriyle incelenmesini beraberinde getirmiştir. Bu bağlamda tez çalışmasının amacı Van iline gelen yerli turistlerin yerel yemek deneyiminin turist memnuniyeti ve davranışsal niyet üzerindeki etkisini incelemektir. Çalışma, nicel araştırma yöntemi ile tarama modeli kullanılarak yapılmıştır. Araştırma verilerini 2024 Ekim-Aralık aylarında Van iline gelen yerli turistlerin anketlere verdikleri cevaplar oluşturmaktadır. Toplam 470 katılımcıdan alınan veriler incelenmiş ve eksik veya hatalı doldurma tespiti yapılarak 406 veri değerlendirmeye alınmıştır. Araştırma verileri Sosyal Bilimler için istatistik programı olan SPSS programı kullanılarak analiz edilmiştir. Araştırma verilerinin açımlayıcı faktör analizi sonucunda yerel yemek deneyimi faktörleri yeni deneyim, otantik deneyim ve duygusal deneyim olmak üzere 3 faktör altında ele alınmıştır. Araştırma sonuçlarına göre korelasyon analizi sonucunda yerel yemek deneyimi faktörleri ile turist memnuniyeti ve davranışsal niyet arasında olumlu ve anlamlı bir ilişki olduğu belirlenmiştir. Yerel yemek deneyiminin, turist memnuniyeti ve davranışsal niyet üzerindeki etkisinin belirlemesi için yapılan çoklu doğrusal regresyon analizi sonucunda; yerel yemek deneyimi faktörlerinden yeni deneyim ve duygusal deneyim faktörlerinin turist memnuniyetini olumlu yönde etkilerken, otantik deneyim faktörünün turist memnuiyeti üzerinde anlamlı bir etkisinin olmadığı görülmüştür. Yerel yemek deneyimi faktörleri ile davranışsal niyet arasındaki ilişkiye yönelik regresyon analizi sonuçları; yeni deneyim, otantik deneyim ve duygusal deneyimin davranışsal niyeti olumlu yönde etkilediğini ortaya koymuştur. Yine turist memnuniyeti ve davranışsal niyet arasındaki ilişkinin istatistiksel olarak anlamlı olduğu bulgulanmıştır. Çalışma yerel yemek deneyiminin her geçen gün artan öneminin memnuniyet ve niyet üzerindeki etkisini göstermektedir. Elde edilen bulgular çerçevesinde gelecekteki çalışmalar için akademisyenlere, planlama ve uygulamalar için işletmecilere ve kamu yöneticilerine çeşitli önerilerde bulunulmuştur. Anahtar Kelimeler: Gastronomi, Yerel Yemek, Yerel Yemek Deneyimi, Turist Memnuniyet, Davranışsal Niyet, VanIn recent years, the increasing interest in local culinary cultures and gastronomy tourism experiences has brought about the examination of culinary cultures as a touristic product in various aspects. In this context, the aim of the thesis study is to examine the effect of local food experience of domestic tourists visiting Van province on tourist satisfaction and behavioral intention. The study was conducted using the quantitative research method and the screening model. The research data consists of the responses given to the surveys by domestic tourists visiting Van province in October-December 2024. The data received from a total of 470 participants were examined and 406 data were evaluated by detecting missing or incorrect filling. The research data were analyzed using the SPSS program, which is a statistical program for Social Sciences.The research data were analyzed using SPSS, a statistical program for Social Sciences. As a result of the exploratory factor analysis of the research data, local food experience factors were addressed under 3 factors, namely new experience, authentic experience and emotional experience. According to the research results, as a result of the correlation analysis, it was determined that there was a positive and significant relationship between local food experience factors and tourist satisfaction and behavioral intention. As a result of the multiple linear regression analysis conducted to determine the effect of local food experience on tourist satisfaction and behavioral intention; while the new experience and emotional experience factors among the local food experience factors positively affected tourist satisfaction, it was seen that the authentic experience factor did not have a significant effect on tourist satisfaction. The regression analysis results for the relationship between local food experience factors and behavioral intention revealed that new experience, authentic experience and emotional experience positively affected behavioral intention. Again, it was found that the relationship between tourist satisfaction and behavioral intention was statistically significant. The study shows the effect of the increasing importance of local food experience on satisfaction and intention. Various suggestions have been made to academics for studies on the relationship between the obtained data, to business operators for planning and applications, and to public use. Keywords: Gastronomy, Local Food, Local Food Experience, Tourist Satisfaction, Behavioral İntention, Va
Capitalism and Social Pathology
No full textKapitalizm ve Toplumsal Patoloji adlı bu çalışma, kapitalizm ve toplumsal patoloji arasındaki ilişkiyi ele almaktadır. Kapitalizmin toplumsal yapıyı ve bireylerin yaşamlarını nasıl dönüştürdüğünü, salt bir ekonomik sistem olmaktan öte, bireylerin arzularını, kimliklerini ve toplumsal ilişkilerini şekillendiren bir güç haline geldiği modern dönemde, kapitalizm ve toplumsal patoloji arasındaki ilişki açıklanmaktadır. Tezin birinci bölümünde, kapitalizmin toplumsal patolojiye neden olup olmadığını, toplumsal yapıları ve bireylerin gündelik yaşamlarını nasıl dönüştürdüğünü araştırılmaktadır. Kapitalizmin bireyler üzerinde yarattığı yabancılaşma, anomi, beden müdahaleleri gibi patolojik durumlar, klasik sosyolojik teorilerle tartışılacaktır. Tezin ikinci bölümünde ise; kapitalizmin birey ve toplum üzerindeki etkilerini, Deleuze ve Guattari'ninşizo-analitik, 'arzu üretimi' ve 'arzulama makineleri' gibi kavramlar üzerinden tartışmaktadır. Kapitalizmin arzu üretimindeki rolünü ve bireylerin arzularını nasıl yönlendirdiği ve bu arzuların toplumsal makine ile nasıl şekillendiğini, toplumsal yapıları ve bireysel kimlikleri nasıl kodladığı, arzuların nasıl bastırıldığı ve yeniden şekillendirildiği şizo-analitik bakış açısıyla ele alınmaktadır. Çalışma, modern kapitalizmin toplumsal patolojiyi nasıl yarattığı ve bu patolojilerin toplumsal düzeyde nasıl tezahür ettiği üzerine sosyolojik bir inceleme yapmakta, kapitalizmin toplumsal yapıyı dönüştürme biçimini ve bunun bireyler üzerindeki patolojik etkilerini analiz ederken, aynı zamanda bu sürecin nasıl bir şizo-özne yaratarak tersine çevrilebileceğini tartışmaktadır. Anahtar Kavramlar: Kapitalizm, Toplumsal Patoloji, Arzu, Arzulama Üretimi, Toplumsal Makine.This study, titled Capitalismand Social Pathology, examines the relationship between capitalism and social pathology. It explores how capitalism transforms social structuresan dindividuals' lives, extending beyond a mere economic system to become a force that shapesdesires, identities, and social relations in the modern era. The first chapter investigate swhether capitalism causes socialpathologyand how it transforms social structure sandindividuals' daily lives. Pathological conditionssuch as alienation, anomie, and bodily interventions caused by capitalism will be discussed throughclassicalsociologicaltheories. These condchapteranalyzestheeffects of capitalism on individuals and society throughtheschizoanalyticperspective of DeleuzeandGuattari, focusing on conceptssuch as 'desiring-production' and 'desiring-machines.' Itexaminescapitalism's role in theproduction of desire, how it directsindividuals' desires, and how thesedesiresareshapedbythe social machine. The studyalsoexplores how socialstructuresandindividualidentitiesarecoded, how desiresaresuppressedandreshaped, allwithintheframework of schizoanalysis. This research provides a sociological analysis of how modern capitalism generatessocial pathologyand how these pathologiesmanifest at thesocietallevel. It examinesthewayscapitalism transforms social structures and its pathological effects on individuals, whilealsodiscussing how this process can be reversed throughthecreation of a schizo-subject. Keywords:Capitalism, Social Pathology, Desire, Desiring-Production, Social Machine
Evaluation of St-Segment and T-Wave Changes Associated With Nste-Acs in Patients With Rbbb: a Nested Case-Control Study Design
No full textDuyan, Murat/0000-0002-6420-3259; Gunlu, Serhat/0000-0001-6985-6112; Ibze, Suleyman/0000-0002-0927-0029; Ertas, Elif/0000-0003-1827-4862; Guven, Hasan Can/0000-0001-5576-4911; Vural, Nafis/0000-0002-3551-201XPatients presenting with suspected acute coronary syndrome (ACS) in the emergency department (ED) require rapid and accurate electrocardiographic (ECG) evaluation. This study aims to assess conventional ECG markers for diagnosing non-ST-elevation ACS (NSTE-ACS) in patients with chest discomfort and right bundle branch block (RBBB). A nested case-control design was employed to compare patients with RBBB admitted to the ED for suspected cardiac ischemia, focusing on those who developed NSTE-ACS versus those who did not. The sample consisted of 352 patients with suspected ACS and RBBB identified on ECG. Among them, 88 were diagnosed with NSTE-ACS. In the presence of RBBB, ST-segment elevation on the isoelectric line and/or positive T-waves on the ECG were significantly associated with the diagnosis of NSTE-ACS (p < 0.05). In patients who developed NSTE-ACS, the likelihood of an isoelectric ST-segment was 3.48 (95% CI 2.07-5.82) times higher, the likelihood of positive T-waves was 4.16 (95% CI 2.51-6.91) times higher, and the combination of an isoelectric ST-segment with positive T-waves was 4.81 (95% CI 2.28-8.25) times higher (p < 0.05). In addition, ST-segment depression and non-negative T-waves were significantly more frequent in patients who developed NSTE-ACS, with odds ratios of 5.78 (95% CI 3-11.3), compared to those who did not (p < 0.05). The odds ratios for ST-segment and T-wave changes were 2.81 and 3.47, respectively, with an 80% correct classification rate for predicting NSTE-ACS. Clinicians should closely monitor the presence of an isoelectric ST-segment and positive T-waves in patients with RBBB to assess for potential cardiac ischemia
The Predictive Value of the Cha2ds2-Vasc Score in the Development of Contrast-Induced Nephropathy After Endovascular Intervention in Peripheral Artery Disease
No full textBackground: Contrast-induced nephropathy (CIN) is a frequent complication of endovascular interventions for peripheral artery disease (PAD). It is linked to renal dysfunction, extended hospital stays, increased cardiovascular events, and higher mortality rates. The CHA2DS2-VASc score, widely utilized for assessing cardioembolic risk and guiding anticoagulation therapy in nonvalvular atrial fibrillation, encompasses risk factors that overlap with those of CIN. This study investigates whether the CHA2DS2-VASc score can predict CIN in PAD patients undergoing endovascular interventions. Methods: The study included 754 consecutive PAD patients who underwent endovascular procedures at 2 centers. Each patient's CHA2DS2-VASc score was calculated and categorized into low (= 3) groups. Patients were retrospectively monitored for CIN development and divided into CIN-positive (CIN+) and CIN-negative (CIN-) groups. Univariate and multivariate regression analyses were performed to identify independent predictors of CIN, and a significance level of P < 0.05 was used for all statistical analyses. Results: Of the 754 patients, 178 (23.6%) developed CIN, with 151 (84.8%) occurring in the high CHA2DS2-VASc score group (P < 0.001). The CHA2DS2-VASc score was significantly higher in the CIN(+) group compared to the CIN(-) group (P < 0.001). Regression analysis identified the CHA2DS2-VASc score (odds ratio [OR]: 1.574, 95% confidence interval [CI]: 1.2981.907, P < 0.001), baseline creatinine (OR: 2.296, 95% CI: 1.580-3.335, P < 0.001), and hemoglobin (OR: 0.915, 95% CI: 0.844-0.992, P < 0.001) as independent risk factors. A CHA2DS2-VASc score cutoff of 2.5 predicted CIN with 85% sensitivity and 42% specificity. Conclusion: The CHA2DS2-VASc score is an independent predictor of the development of CIN in patients with PAD undergoing endovascular intervention
Breaking Misconceptions: Assessing the Quality of Youtube Videos on Penile Fracture With Validated Scoring Tool
No full textBackground: The main objective of this research was to evaluate the effectiveness of YouTube videos related to penile fracture by applying established rating systems. Methods: A descriptive investigation was carried out by browsing YouTube for videos related to "Penile fracture". Out of a total of 108 videos that were found, 47 were deemed eligible for inclusion in the analysis. The features and substance of the videos were assessed utilizing the adjusted DISCERN tool, the criteria from the Journal of the American Medical Association (JAMA), and the Global Quality Scale (GQS). Statistical analysis was performed using SPSS 22.0 software, with a significance level of p 0.05). In contrast, videos with detailed and accurate content had significantly higher view counts (approximately tenfold) and more likes (approximately twofold) than poor-content videos (p < 0.05). A strong positive correlation was found between content analysis scores and DISCERN (r = 0.815, p < 0.001), JAMA (r = 0.781, p < 0.001), and GQS (r = 0.722, p < 0.001). Videos made by urologists and surgeons demonstrated superior quality across all measured criteria in comparison to those crafted by individuals without healthcare backgrounds (p <0.001). Conclusions: The quality of YouTube content addressing penile fracture exhibits a wide range, with content generated by healthcare experts standing out for its high quality. It is imperative for medical professionals to actively engage in disseminating accurate health information on these platforms
Impact of a Psychoeducation on Caregiver Burden, Internalized Stigma, Anxiety, and Coping in Caregivers of Children With Epilepsy: a Randomized Pilot Study
No full textSakiz, Halis/0000-0003-2406-1011This pilot randomized trial examined the effects of a psychoeducational intervention on caregiving burden, anxiety, internalized stigma, and coping strategies among caregivers of children with epilepsy. Using a randomized design, 54 caregivers were assigned to either an experimental (n = 28) or control (n = 26) group. The 6-week intervention included psychoeducation, emotional support, and stress-management techniques aimed at enhancing caregivers' psychological well-being. Results showed significant reductions in caregiving burden (p = 0.000), internalized stigma (p = 0.000), and anxiety (p = 0.000) in the experimental group, while the control group showed no significant changes. Caregivers in the experimental group also adopted more adaptive coping strategies, including increased self-confidence (p = 0.000) and optimistic approaches (p = 0.001), greater reliance on social support (p = 0.001), and decreased use of helpless (p = 0.000) and submissive coping styles (p = 0.000). These findings demonstrate the feasibility and preliminary efficacy of psychoeducational interventions for improving caregiver well-being and suggest the need for a future large-scale definitive trial to confirm these effects
Investigation of Anti-Neutrophil Cytoplasmic Antibody by Indirect Immunofluorescence Assay in COVID-19 Patients
No full textAim: Coronavirus disease-2019 (COVID-19) has been suggested to trigger the production of autoimmune antibodies and contribute to the development of anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis. This study aims to investigate the presence of ANCA among COVID-19 patients. Methods: This cross-sectional, prospective analysis included 200 COVID-19 patients with positive polymerase chain reaction test results for severe acute respiratory syndrome-coronavirus-2 and no history of autoimmune disease, recruited between June 2021 and November 2022. The control group included 50 age-matched healthy blood donors. The ANCA profile was assessed using the indirect immunofluorescence assay method with the EUROPLUS Granulocyte Mosaic EUROPattern test kit (EUROIMMUN, Germany) on sera samples of the patient and control groups. Results: Perinuclear ANCA (p-ANCA) was detected in 12 of 200 COVID-19 patients (6.0%) and cytoplasmic ANCA (c-ANCA) was detected in 15 of 200 patients (7.5%). No ANCA positivity was observed in the control group (0/50). ANCA positivity among COVID-19 patients (27 of 200, 13.5%) was statistically significantly higher than in the control group (p<0.05). ANCA positivity was significantly higher in intensive care unit (ICU) patients (21 of 77, 27.3%) compared to non-ICU patients (6 of 123, 4.9%) (p<0.05). Conclusion: ANCA presence in ICU patients supports the hypothesis that COVID-19 triggers ANCA synthesis and contributes to disease severity.Dicle University Scientific Research Projects Commission (DUBAP) [SBE.21.005]Financial Disclosure: This study was supported by the Dicle University Scientific Research Projects Commission (DUBAP) under project number SBE.21.005
Effect of Individual Psychoeducation for Primary Caregivers of Children With Autism on Internalized Stigma and Care Burden: a Randomized Controlled Trial
No full textThis study aims to determine the effects of a six-week individual psychoeducation program provided to primary caregivers of children with autism on stigma and care burden. The study was conducted with 88 primary caregivers (experimental group n = 45, control group n = 43) of children diagnosed with autism. The study, prepared in an experimental design with a pretest, posttest, and control group, was performed between 17 June 2021 and 17 January 2022. In the study, a six-week individual psychoeducation was given to the experimental group. Study data were collected using a personal information form, the Internalized Stigma of Parents in Mental Illness Scale (ISPMIS), and the Caregiver Burden Scale (CBS).The mean pretest ISPMIS total score of the experimental group was (Formula presented.) =105.756 and the posttest total score after the psychoeducation was (Formula presented.) =66.489,which was a significant decrease (t = 25.571; p < 0.05). The mean CBS pretest total score of the experimental group was (Formula presented.) =61.067 and the posttest total score was (Formula presented.) =31.667, which was a significant decrease (t = 17.499;p < 0.05). The study revealed that the six-week individual psycho education provided to primary caregivers of children with autism decreased the participants’ internalized stigma and perceived care burden. © The British Society of Developmental Disabilities 2023