İstanbul Sağlık ve Teknoloji Üniversitesi Kurumsal Akademik Arşivi
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Mental and behavioral health indicators in retired Turkish athletes: Preliminary findings
No full textSports are essential for improving and developing health. Retirement from sports is an occupational transition associated with changes in many habits related to nutrition and lifestyle. Changes in physical activity and food preferences can cause many problems, such as a sedentary lifestyle, stress, depression, and anxiety. For this reason, the career termination process in elite athletes can disrupt the future professional and social functioning of these individuals. This study aims to determine the mental well-being, hedonic eating, and physical activity levels of Turkish retired athletes from various disciplines.FCT – Fundação para a Ciência e a Tecnologia, I.P./ Foundation for Science and Technology, I.P., Grant/Award Number UIDB/04748/2020 Life Quality Research Center (Centro de Investigação Qualidade de Vida)
FCT – Bilim ve Teknoloji Vakfı, F.İ.P./ Bilim ve Teknoloji Vakfı, F.İ.P., Hibe/Ödül Numarası UIDB/04748/2020 Yaşam Kalitesi Araştırma Merkez
Aloe vera-derived Ag-doped TiO2 nanoparticles immobilized by chitosan films for photo(electro)catalytic and antimicrobial functions
No full textIn this study, as an environmentally friendly and sustainable approach, TiO2 nanoparticles (TiO2 NPs) were prepared by green synthesis method using deep eutectic solvent (DES, ChCl/glycerol (1:2)) based Aloe vera leaves extract obtained by Soxhlet extraction. The DES system functioned concurrently as a green solvent and a functional medium, while the bioactive chemicals in the Aloe vera leaves extract operated as natural reducing and stabilizing agents. The produced TiO2 NPs were doped with silver (Ag) at molar ratios of 0.25, 0.50, and 0.75, and immobilized on a chitosan matrix (Ag/TiO2-CS) to facilitate recovery from the reaction media. The materials were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV-Vis), photoluminescence (PL) spectroscopy, scanning electron microscopy-energy dispersive X ray analysis (SEM-EDX) and X-ray photoelectron spectroscopy (XPS). Characterization validated the TiO2 phase, effective Ag incorporation, diminished band gap energy (from 3.34 eV to 2.83 eV), and uniform nanoparticle distribution. PL measurements confirmed that Ag doping reduces carrier charge recombination. The 0.50Ag/ TiO2-CS film displayed the best photocatalytic degradation efficiency for malachite green (93.3 %) under solar irradiation and exhibited a higher photocurrent response relative to undoped TiO2. Moreover, antimicrobial assays demonstrated that 0.50 and 0.75 Ag/TiO2 NPs exhibited significant suppression of S. aureus and E. coli, with low minimum inhibitory concentrations (MIC) (0.40–0.20 µg/mL) and minimum bactericidal concentra tions (MBC), signifying robust bactericidal efficacy. The findings indicate that DES-assisted Aloe vera-mediated synthesis provides an economical and scalable method for producing multifunctional nanocomposites with considerable potential in environmental remediation and biomedical fields
Hemşirelik öğrencilerinin zaman yönetimi becerileri ile yaşam kalitesi arasındaki ilişki
No full textObjective: This study aimed to determine the relationship between nursing students’ time management skills and quality of life. Methods: This descriptive and cross-sectional study was conducted with a total of 103 nursing students from a foundation university. Data were collected between March 1, 2023, and March 31, 2023 using the “Student Identification Form,” the “World Health Organization Quality of Life Scale-Short Form (WHOQOL-BREF),” and the “Nurses Attitude towards Time Management Scale.” Results: It was found that 68% of the participants were female, and participants’ mean age was 20.54±1.30. The mean scores for the students were 90.60±12.09 for the Quality of Life Scale and 62.64±19.10 for the Time Management Scale. There was no statistically significant difference between students’ demographic characteristics and the relationship between quality of life and time management. The correlation analysis revealed a negative relationship between quality of life and time management (r=-.352, p=0.000). Conclusions: It is important to include topics related to the themes addressed in this study in the nursing curriculum to enhance the quality of life and time management skills of nursing students, emphasizing their importance in practical applications and providing counseling services. Additionally, it should be emphasized that nursing schools should provide education to students on efficient and proper use of technology, as well as the avoidance of excessive use of social media.Amaç: Bu çalışma, hemşirelik öğrencilerinin zaman yönetimi becerileri ile yaşam kaliteleri arasındaki ilişkiyi belirlemek amacıyla planlanmıştır. Yöntem: Tanımlayıcı ve kesitsel türdeki çalışma 01.03.2023 - 31.03.2023 tarih aralığında bir vakıf üniversitesinde okuyan toplam 103 hemşirelik öğrencisi ile yürütülmüştür. Veriler, “Öğrenci Tanılama Formu”, “Dünya Sağlık Örgütü Yaşam Kalite Ölçeği–Kısa Formu (WHOQOL-BREF)” ve “Hemşirelerin Zaman Yönetimine İlişkin Tutum Ölçeği” ile toplanmıştır. Bulgular: Katılımcıların %68’inin kadın ve yaş ortalamalarının 20.54±1.30 olduğu saptanmıştır. Hemşirelik öğrencilerinin Yaşam Kalitesi Ölçeği puan ortalaması 90.60±12.09 ve Zaman Yönetimi Ölçeği puan ortalaması 62.64±19.10 olduğu belirlenmiştir. Araştırmaya katılanların demografik özellikleri, yaşam kalitesi ve zaman yönetimi arasında istatistiksel olarak anlamlı bir fark olmadığı görülmüştür. Yapılan korelasyon analizinde; yaşam kalitesi ve zaman yönetimi arasında negatif yönlü bir ilişki saptanmıştır (r=-.352, p=0.000). Sonuç: Hemşirelik öğrencilerinin yaşam kalitesini ve zaman yönetimi ile ilgili becerilerini artırmak için bu konuların hemşirelik eğitim planında yer alması, uygulamalarda ise zaman yönetiminin önemine sık sık vurgu yapılması ve rehberlik hizmetlerinin sunulması önemlidir. Ayrıca, hemşirelik okullarında öğrencilere; teknolojinin verimli ve doğru kullanımı ve aşırı sosyal medya kullanımından kaçınılması konusunda eğitim verilmesi gerektiği vurgulanmalıdır
Examination of infant mortality risk in Turkey with spatio-temporal Bayesian models
No full textThe infant mortality rate in Turkey declined from 13.9 deaths per 1,000 live births in 2009 to 9.3 deaths per 1,000 live births in 2017. This study explored the role of spatio-temporal Bayesian models in explaining this decline. Parametric, nonparametric spatio- temporal Bayesian models, and a Bayesian generalized linear model without space, time, and space-time interaction were applied using the Integrated Nested Laplace Approximation (INLA) method. Exceedance probabilities were used for detecting significant risk clusters. The unstructured spatial and structured temporal interaction random effect of the best-fitting spatio-temporal Bayesian model contributed more to explaining variation in the relative risk of infant mortality than the other random effects. From 2009 to 2017, in each year, significant risk clusters were consistently detected in the eastern and south-eastern Anatolia regions. An increase of 1,000 USD in the Gross Domestic Product (GDP) per capita reduced the relative risk of infant mortality by 2.8%. When determining the factors that may affect infant mortality in Turkey, it is also essential to consider the effects of space, time, and space-time interaction. In addition, decision-makers should consider the increase in GDP per capita as a factor in reducing infant mortality in Turkey by focusing on these significant risk clusters in the eastern and south-eastern Anatolia regions
Yeni bir enerji kaynağı olarak gaz hidratlar
No full textGas hydrates, solid ice-like structures formed by water and methane molecules, are emerging as a critical future energy resource, offering abundant reserves of cleaner-burning methane. These reserves have the potential to enhance energy security, diversify energy portfolios, and support the transition from traditional hydrocarbons to more sustainable energy systems. Globally, nations such as Japan, China, the United States, India, South Korea, and Canada are leading research and development in gas hydrates, making substantial investments in advanced technologies and field tests. These efforts aim to overcome the significant technical and economic challenges currently limiting commercial-scale production. Türkiye's proximity to significant gas hydrate deposits, particularly in the Black Sea, presents a notable strategic opportunity. It is imperative that Türkiye capitalizes on this unique positioning by transforming these inherent advantages into long-term competitive strengths. The confirmed gas reserves in the Black Sea exemplifies such potential
Thermodynamic, thermoeconomic, and exergoeconomic analysis of a UAV two stroke engine fueled with gasoline-octanol and gasoline-hexanol blends
No full textIn recent years, as the use of Unmanned Aerial Vehicle (UAV) engines has increased in various application areas such as military fields, defense, emergencies, and mapping, the use of these engines with fossil-based fuels has raised environmental concerns. The addition of heavy alcohols such as octanol and hexanol, which have high energy densities, to the fossil-based fuels used may help reduce environmental concerns and contribute to per formance improvement. In this study, the performance, emissions, thermodynamic, thermoeconomic, and exergoeconomic analysis of a two-stroke engine operating with gasoline-octanol and gasoline-hexanol fuels in a UAV is conducted. There are no studies in the literature that examine the energy, exergy, thermoeconomic, and exergoeconomic aspects of a two-stroke UAV engine operating with gasoline-octanol and gasoline-hexanol fuel mixtures. The aim of this study is to understand the performance and emission characteristics of used heavy alcohols such as octanol and hexanol in a two-stroke UAV engine, and to examine them from a thermodynamic perspective. The experiments are carried out at different shaft speed ranges (3250, 3750, 4500, 5250, and 6250 rpm). Additionally, seven different fuels are used in the experiments: gasoline, gasoline-octanol mixtures (volumetrically 10 %, 20 %, and 30 %), and gasoline-hexanol mixtures (volumetrically 10 %, 20 %, and 30 %). The results show that increasing the octanol content in gasoline to 30 % (OC30) reduces the specific fuel con sumption (SFC) by up to 5.5 % (at 6250 shaft speed), while increasing the hexanol content to 30 % (HX30) increases it by 6 % (at 5250 shaft speed). CO emissions decrease by an average of 5.3 % and 9.2 % with OC30 and HX30 fuels, respectively (both at 6250 shaft speed), while CO2 emissions increase by an average of 3 % and 10 % with OC30 and HX30 fuels, respectively. With OC30 fuel, the exergetic destruction decreases by an average of 6 % compared to gasoline, while with HX30 fuel, it increases by an average of 3.3 %. OC30 increases the exergetic efficiency by an average of 5.4 % compared to gasoline, whereas HX30 decreases it by 2.9 %
Clinical outcomes following medial patellofemoral ligament reconstruction using ultra high-strength 2-mm-wide tape in non-elite athletes
No full textBackground: The medial patellofemoral ligament (MPFL) reconstruction is commonly conducted using gracilis, semitendinosus, quadriceps or tensor fascia lata tendon autografts or allografts. This approach, however, can sometimes lead to complications or morbidity at the site from which the graft is harvested. This study reports the clinical outcomes of non-elite competitive athletes who undergone MPFL reconstruction using an ultrahigh strength 2-mm-wide tape. Patients and methods: This retrospective cohort study included 67 non-elite athletes with acute or recurrent lateral patellar instability who underwent surgical treatment between December 2015 and December 2020. Athletes who underwent tibial tubercle osteotomy due to severe patellofemoral arthritis or severe osteochondral damage (kissing lesions or >2.5cm2 ) (1), trochlear dysplasia (Dejour type D dysplasia) (5), open physis (19) and revison MPFL reconstruction (8), were excluded. The remaining 34 athletes were followed postoperatively for a mini mum of 48 months. Results: During the follow-up period, there was only one case and which was revised by adding Fulkerson Osteotomy. Two patients had limited range of motion and joint mobilization was performed under general anesthesia at the end of the second month. The International Knee documentation Committee (IKDC), Kujala, and visual analog scale (VAS) scores showed improvement postoperatively (p < 0.001). Moreover, the mean im provements in IKDC (≈+41), Kujala (≈+33), and VAS (≈− 3.8) scores exceeded the established minimal clini cally important difference (MCID) thresholds, indicating that the outcomes were not only statistically significant but also clinically meaningful for patients. When comparing the pre- and postoperative radiological measure ments, the mean tilt angle and mean congruence angle showed a significant decrease (p < 0.001) Conclusion: Suture tape may be a good alternative to autograft, as it does not cause donor site morbidity. However, its most important disadvantage is its higher cost. Level of evidence: IV; Retrospective case series
Büyük azı keser hipomineralizasyonu kaynaklı anterior dişlerdeki hipomineralize alanların rezin infiltrasyon tekniği ile tedavisi
No full textAMAÇ Büyük Azı Keser Hipomineralizasyonu (BAKH), özellikle birinci büyük azı ve kesici dişlerde görülen, mine matürasyonundaki bozulma sonucu ortaya çıkan bir gelişimsel defekttir. BAKH’a bağlı oluşan opak beyaz/kahverengi lezyonlar, çocuk hastalarda estetik kaygıya ve psikososyal sorunlara yol açabilir. Özellikle anterior bölgede yer alan hipomineralize alanların minimal invaziv yöntemlerle tedavi edilmesi, hem estetik beklentileri karşılamakta hem de mine dokusunun daha fazla harabiyetini önlemektedir. Bu olgu bildiriminde, BAKH’a bağlı anterior dişlerde oluşan hipomineralize alanların rezin infiltrasyon tekniğiyle başarılı bir şekilde tedavisi sunulmaktadır. OLGU Estetik kaygı ile kliniğimize başvuran, sistemik olarak sağlıklı 8 yaşında kız hastanın yapılan klinik değerlendirmesinde alt anterior bölgede yer alan daimi kesici dişlerde BAKH’a bağlı opak beyaz lezyonlar tespit edilmiştir. Üst anterior dişlerde gözlenen çapraz kapanışın düzeltilmesi amacıyla hastaya ekspansiyon tedavisi planlanmış ve tedavi sürecine başlanmıştır. Bu süreçte, alt dişler kaynaklı estetik kaygının giderilmesi amacıyla ICON (DMG, Almanya) ile rubber dam izolasyonu altında rezin infiltrasyon tedavisi uygulanmıştır. Uygulama sırasında 15% hidroklorik asit jel (ICON Etch) 2 dakika süreyle uygulanmış ve bu işlem 3 kez tekrarlanmıştır. Her asitleme sonrasında yüzey, 30 saniye bol suyla yıkanmış; ardından %99 etanol (ICON Dry) 30 saniye uygulanarak yüzey kurutulmuştur. Son aşamada, rezin içerikli ICON Infiltrant lezyon bölgelerine 3 dakika süreyle uygulanmış ve 40 saniye ışıkla polimerize edilmiştir. İşlem polisaj uygulaması ile tamamlanmıştır. SONUÇ Rezin infiltrasyon tekniği ile gerçekleştirilen tedavi sonucunda hipomineralize alanların görünürlüğü belirgin şekilde azalmış, elde edilen estetik görünüm hasta ve ailesi tarafından tatmin edici bulunmuştur. Bu olgu, ICON rezin infiltrasyon uygulamasının, BAKH’a bağlı anterior bölgedeki hipomineralize lezyonlarda estetik açıdan etkili ve güvenli bir tedavi seçeneği olduğunu ortaya koymaktadır
Cytotoxic effects of polyphenolic cocktail (PFK5120), salicylic acid and indole-3-carbinol combinations on gastric adenocarcinoma cell line
No full textCytotoxic effects of polyphenolic cocktail (PFK5120), salicylic acid and indole-3-carbinol combinations on gastric adenocarcinoma cell line
Palatal donor site management using tissue adhesives with adjunctive coconut oil in a randomized clinical trial
No full textManagement of the complications occurring in the donor area after epithelialized gingival graft (EGG) harvesting still poses a challenge for clinicians. This study aimed to evaluate the influence of gelatin sponge (GS), cyanoacrylate (CY), and coconut oil (CO) combination in comparison with GS+CY in donor site management. Fifty EGG were harvested from the lateral palate in 50 patients, who were subsequently randomized to receive the GS+CY (control) or GS+CY+CO combination (test). Postoperative pain perception (PP), quantity of analgesics (QA), epithelization level (EL), color match (CM), sensation loss (SL), postoperative discomfort (PD), and delayed bleeding (DB) were evaluated. The GS+CY+CO group showed lower PP scores compared to the GS+CY (p0.05). GS+CY+CO combination is more effective in reducing pain compared to GS+CO in donor site management after EGG harvesting. Additionally, GS+CY+CO combination may accelerate epithelialization and improve color match compared to GS+CY alone