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Solid Core Magnetic Gear Systems: A Comprehensive Review of Topologies, Core Materials, and Emerging Applications
No full textFeatured Application By integrating manufacturability constraints into magnetic gear material evaluation, this review enables more realistic and scalable design solutions, guiding smart material selection and topology optimization in compact, high-torque systems.Abstract Magnetic gears (MGs) are attracting increasing attention in power transmission systems due to their contactless operation principles, low frictional losses, and high efficiency. However, the broad application potential of these technologies requires a comprehensive evaluation of engineering parameters, such as material selection, energy efficiency, and structural design. This review focuses solely on solid-core magnetic gear systems designed using laminated electrical steels, soft magnetic composites (SMCs), and high-saturation alloys. This review systematically examines the topological diversity, torque transmission principles, and the impact of various core materials, such as electrical steels, soft magnetic composites (SMCs), and cobalt-based alloys, on the performance of magnetic gear systems. Literature-based comparative analyses are structured around topological classifications, evaluation of material properties, and performance analyses based on losses. Additionally, the study highlights that aligning material properties with appropriate manufacturing methods, such as powder metallurgy, wire electrical discharge machining (EDM), and precision casting, is essential for the practical scalability of magnetic gear systems. The findings reveal that coaxial magnetic gears (CMGs) offer a favorable balance between high torque density and compactness, while soft magnetic composites provide significant advantages in loss reduction, particularly at high frequencies. Additionally, application trends in fields such as renewable energy, electric vehicles (EVs), aerospace, and robotics are highlighted
Evaluating Vision Language Models for Temporally Consistent Object Counting in Smart-Factory Videos
No full textÖZEL KARIŞIMLI PUZOLANİK KATKILI BETONUN BASINÇ DAYANIMI VE DURABİLİTE PERFORMANSININ ARAŞTIRILMASI
No full textTezde atık puzolanik ürünlerin beton içinde geridönüşümü yapılmıştır.</p
Kocaeli ilinde 1991-2024 yıllarındaki maksimum sıcaklık trendlerinin ve sıcak hava dalgalarının incelenmesi
No full textEfficacy of pro-yellow laser versus cryotherapy in treating cutaneous lesions of Kaposi's sarcoma: a comparative study
No full textThis study aimed to evaluate the efficacy of Pro-Yellow Laser (PYL) in treating plaque and patch lesions of classical Kaposi's Sarcoma (KS) and compare its outcomes with cryotherapy (CT). A single-blind, randomized, comparative experimental study was conducted on nine HIV-negative classical KS patients at Kocaeli University Dermatology Outpatient Clinic between April 2022 and April 2023. Each patient received both CT and PYL treatments on separate lesions. Lesions were scored based on surface area and depth before and after treatment, and percentage change (PC) was calculated. A total of 41 lesions were treated (16 with CT and 25 with PYL). CT achieved 100% median PC, while PYL showed a median PC of 42.58% (p = 0.008). No significant difference was observed between CT and PYL in macule/patch lesions (DS-1, p = 0.192), but CT was significantly more effective for papule/plaque lesions (DS-2, p = 0.048). CT caused minor side effects such as blistering and delayed healing, while PYL was well-tolerated with no adverse events. PYL demonstrated comparable efficacy to CT for early-stage KS lesions with fewer complications, making it a promising alternative for patients unable to tolerate CT. However, CT remains more effective for advanced lesions. Further studies are needed to confirm these findings in larger cohorts
4E analysis of a novel hybrid double-pass solar air heater integrated with a latent heat storage unit: an experimental study
No full textEnsuring a consistent air temperature for extended periods using a solar air heater remains challenging, especially under fluctuating solar radiation. This experimental study evaluates the performance of a novel hybrid double-pass solar air heater (HDPSAH) integrated with a latent heat thermal storage unit (TSU). The primary objective is to maintain a stable outlet air temperature and assess the impact of positioning an auxiliary heater in the U-turn section on the system's thermal behavior. A comprehensive analysis was conducted from energy, exergy, environmental, and economic perspectives. The findings indicate that incorporating the TSU effectively stabilized the outlet temperature at 54 ± 1.25 °C, extending heat availability by 1.5 h after sunset. The system reduced reliance on electrical energy to 18.65%, with a daily consumption of 1674.6 Wh. At a mass flow rate of 0.024 kg s−1, the HDPSAH achieved a thermal efficiency of 72.3% and an exergetic efficiency of 3.5%. Additionally, sustainability indicators, including the sustainability index, improvement potential, and relative CO₂ reduction potential, were recorded as 1.04, 0.709 kW, and 2.89, respectively, highlighting its environmental benefits, with an energy payback time of 0.48 years. Furthermore, the system demonstrated significant economic feasibility, with an investment payback period of 0.65 years, indicating that the proposed HDPSAH is a cost-effective and sustainable solution for various agricultural and industrial applications
Bibliometric Analysis of the 100 Most Cited Articles on Dysphagia Rehabilitation
No full textObjective: This study aims to conduct a bibliometric analysis of the 100 most-cited articles in dysphagia rehabilitation. Methods: A comprehensive search was conducted in the Web of Science database for articles published between January 1975, and July 2024, using the keyword "dysphagia rehabilitation." The 100 most-cited articles were selected for bibliometric analysis. Key data extracted from these articles included the title, publication year, author names, total citation count, citation index, journal of publication, impact factor, and type of article. The citation index was calculated by dividing the total number of citations by the number of years since publication to assess the impact and relevance of each article over time. Results: The T100 articles received a total of 22.674 citations. Overall, 61 journals published the T100 articles, with the Archives of Physical Medicine and Rehabilitation (n=12) being the journal that published the most. The United States, followed by England, Canada and Japan had the highest number of articles. Clinical research was the most common type of article among the T100. A strong relationship was found between the citation index and the number of citations (p ≤ 0.05). Conclusion: Due to its growing need, dysphagia rehabilitation is becoming an increasingly popular research area. These findings can help researchers understand the quality and trends in dysphagia rehabilitation research and guide future studies
