İstanbul Sağlık ve Teknoloji Üniversitesi Kurumsal Akademik Arşivi
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Güncel Gönderiler
Management of plastic wastes: History, current applications, and future perspectives of recycling, upcycling, and reclaiming technologies
(Springer Nature Link, 2026) Alanalp, Mine Begüm; Ergin, Mustafa Fatih; Durmuş, Ali; Das, Alok Prasad; Karakuş, Selcan
Plastic materials possess a variety of structural and physical features and some key characteristics that make them widely used in many applications due to their superior properties such as low density, chemical and mechanical durability, low cost, recyclability, easiness and versatility in processing, thermal and electrical insulating property, colorability. Plastics are used in various applications in many industrial areas and daily-life, including packaging (the largest segment), construction, automotive, electronics, and consumer goods. Since the 1950s, production and consumption of plastics has readily increased, with global production reaching over 370 million metric tons in recent years. This trend is expected to continue, with projections estimating it could reach over 1 billion metric tons by 2030. The highest plastic consumption is found in developed regions like North America, Europe, and parts of Asia. However, emerging economies are rapidly increasing their consumption related to growing industrialization and urbanization in these countries. Overall, while plastics play a crucial role in modern society, their increasing consumption raises important questions about sustainability and environmental health. The rapid increase in plastic production and consumption has led to significant environmental challenges such as pollution, wildlife harm, and waste management issues. An estimated 11 million metric tons of plastic enter the oceans each year. There is a growing push toward a circular economy model, emphasizing the importance of reducing, reusing, and recycling plastics to minimize environmental impact. Managing plastic wastes effectively involves a combination of various strategies aimed at reducing, reusing, recycling, and disposing of plastics in an environmentally responsible manner. Modern societies can significantly reduce plastic waste and its environmental impact, promoting a more sustainable future by integrating these strategies. This chapter comprehensively summarizes and discusses the current applications of recycling, upcycling and reclaiming technologies of plastic wastes. Future perspectives and projections will also be highlighted to manage plastic wastes effectively and establish sustainable development in the world.
Performance and emission characteristics of a single-cylinder diesel engine fueled with a 10% olive pomace oil– diesel blend
(Trakya University, 2025) Tunçer, Erdal; Kaya, Yalçın; Akal, Dinçer
This study investigates the effects of using a 10% olive pomace oil–diesel blend on the performance and emission characteristics of a single-cylinder diesel engine under varying load conditions. The blend was prepared by volumetrically mixing 10% olive pomace oil with standard diesel fuel. The engine was tested under four different load conditions: 25%, 50%, 75%, and 100% of full load capacity.The experimental results revealed that the engine power output decreased by a maximum of only 0.1 kW across all load conditions when compared to standard diesel. This minor reduction indicates that the blend maintains comparable engine performance. Fuel consumption increased by a maximum of 16 ml/h, which is a relatively small difference and within acceptable limits for alternative fuel use. In terms of emissions, carbon monoxide (CO) levels decreased slightly—by approximately 0.01%—across all load conditions, suggesting improved combustion efficiency. However, the reduction in CO was minimal. On the other hand, nitrogen oxides (NOₓ) emissions showed an increase, particularly at higher loads. A maximum increase of 160 ppm was recorded at 75% load, while other conditions showed moderate increases ranging from 55 to 65 ppm. Despite the slight rise in NOₓ emissions, the findings suggest that blending olive pomace oil with diesel at a 10% volumetric ratio can be a viable and sustainable alternative fuel option for diesel engines, with minimal impact on performance and moderate changes in emissions.
Incidence and prognostic factors of isolated para-aortic lymph node metastasis in endometrial cancer: A single-center study
(Minerva Medica, 2025) İbrahimov, Akbar; Boyraz, Gökhan
Para-aortic lymph node metastasis (PALNM) is a key prognostic factor in endometrial cancer (EC). This study aimed to de- termine the incidence and prognostic factors of lymph node metastasis (LNM) and isolated PALNM in endometrioid-type EC patients. METHODS: EC patients treated surgically between 2000 and 2015, staged by FIGO 2009 criteria, were retrospectively analyzed. Included were patients with endometrioid histology grades I-III who underwent pelvic and PALN dissection. Excluded were those without lymph node dissec tion or with non-endometrioid histology. RESULTS: A total of 417 patients met the criteria. Of these, 246 (59%) were grade I, 117 (28.1%) grade II, and 46 (11%) grade III. Pelvic LNM (PLNM) was found in 43 (10.3%), and PALNM in 22 (5.3%). Five patients (1.19%) had isolated PALNM. PALNM was more frequent in patients with stage III, tumors >2 cm, cervical glandular/stromal involvement, deep myometrial invasion, positive peritoneal cytology, adnexal involvement, PLNM, and LVSI. Isolated PALNM was notably higher with adnexal involvement. Independent predictors of PALNM were cer vical glandular involvement and LVSI. Deep myometrial invasion, LNM, PLNM, LVSI, and adnexal involvement were linked to disease-free survival (DFS), while peritoneal cytology, PLNM, and LVSI were linked to recurrence. There was no significant difference in recurrence and DFS between PALNM and isolated PALNM. CONCLUSIONS: Isolated PALNM without PLNM is rare in EC patients but should be assessed for optimal staging and treatment.
Association of health-promoting behaviors with oral health status among Turkish dental students: A cross-sectional study
(Springer Nature Link, 2026) Ballı Akgöl, Beyza; Bayram, Merve; Üstün, Nilüfer; Aksaka, Nurcan
Background: Oral health is an essential component of overall well-being, and dentistry students are expected to model healthy behaviors. However, their lifestyle habits may not always reflect this role. This study explores the relationship between oral health status and health-promoting behaviors among fourth-year dental students. While the Health-Promoting Lifestyle Profile II (HPLP II) has been widely applied, its use alongside objective oral health indices in this population remains limited. Methods: This cross-sectional study assessed health-promoting behaviors using the Health-Promoting Lifestyle Profile II (HPLP II) and evaluated oral health status using clinical indices, including Decayed, Missing, and Filled Teeth (DMFT) index, Gingival Index (GI), and Plaque Index (PI), among fourth-year dental students. Results: Students with better gingival health exhibited higher overall health-promoting lifestyle scores, particularly in the domains of nutrition and health responsibility. Similarly, participants with better plaque control demonstrated more favorable stress management behaviors. In addition, weak inverse associations were observed between dental caries experience and spiritual growth, as well as between plaque accumulation and overall health-promoting lifestyle behaviors. Conclusion: This study revealed significant links between key health promoting lifestyle domains—nutrition, stress management, and health responsibility—and oral health indicators. These findings underscore the need to integrate structured health promotion modules into dental curricula to improve students’ well-being and clinical competence.
Addressing spirituality in counseling: Turkish mental health professionals’ views on a training program for professional competencies
(Springer Nature Link, 2026) Ekşi, Halil; Turgut, Ebru Talibe; Karalı, Fatma Betül; Şen, Hale; Akyol, Havvanur; Aydın, Neslihan; Koç, Yusuf Ziya
The integration of spirituality into counseling has gained increased attention due to its significant impact on psychological well-being. However, mental health profes sionals often face challenges with incorporating spiritual dimensions into therapy, primarily due to inadequate training, conceptual ambiguity, and ethical concerns. This qualitative phenomenological study aims to explore mental health profession als’ perspectives on addressing spirituality in counseling and to assess the necessity of a specialized training program to enhance competencies in this area. We used cri terion sampling to select 11 experienced psychologists, counselors, and academics to, conduct semi-structured interviews, and analyze the data using descriptive analy sis to identify the key themes related to integrating spirituality into counseling. The findings reveal that the current training curricula does not adequately cover spir ituality, which has led to a lack of confidence among mental health professionals. The participants highlighted several barriers, including professional hesitancy, ethi cal concerns, clients’ misunderstandings, and the dominance of secular educational models. Additionally, the study identified the specific competencies needed for inte grating spirituality into counseling and categorized them into knowledge, skills, and attitudes. The professionals emphasized the need for a structured training program that includes conceptual knowledge about spirituality, evidence-based intervention techniques, ethical considerations, and culturally sensitive approaches. Furthermore, recommendations were made regarding the content, format, and evaluation methods for such a training module. The study underscores the urgent need for standardized training to equip mental health professionals with the skills required to address spir ituality in an ethical and culturally competent manner.
