Sakarya ÜniversitesiThe DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material.https://acikerisim.sakarya.edu.tr:4432024-03-28T16:21:26Z2024-03-28T16:21:26ZDeep Learning-Based Skin Diseases Classification using SmartphonesOztel, IsmailOztel, Gozde YolcuSahin, Veysel Harunhttps://hdl.handle.net/20.500.12619/1023252024-02-23T11:45:28Z2023-01-01T00:00:00ZDeep Learning-Based Skin Diseases Classification using Smartphones
Oztel, Ismail; Oztel, Gozde Yolcu; Sahin, Veysel Harun
Skin disease recognition is one of the essential topics in the medical industry. Detecting skin disease from appearance can be difficult due to the similar appearance of skin lesions. In some cases, such as the monkeypox virus, the illness must be quickly determined, and the patients must be isolated to reduce the spreading of the disease. This study aims to create a deep learning-based automated intelligent mobile application to detect skin disease. First, different small-size pretrained networks are trained for skin lesion image classification. Then, the most suitable network from the viewpoint of both performance and mobile compatibility is transformed into the TensorFlow Lite format. Finally, a mobile application is created on the Android platform that utilizes the smartphone's camera to obtain images and uses TensorFlow Lite to make predictions. The proposed system produces 74.27% classification accuracy for seven classes on a combined dataset. It produces comparable/better results compared to the literature. Owing to the proposed system, the patients can make a preliminary diagnosis of their lesions using their smartphones. Thus, risky patients can be encouraged to visit the hospital for a definitive diagnosis. In addition, the mobile application can avoid undue stress and false alarms. Automated skin lesion analysis systems can assist people in ensuring rapid diagnosis. Convolutional neural networks (CNNs) can be used to realize these types of systems. Integrating CNNs into smartphones opens new doors for creating mobile intelligent systems. Mobile devices can be utilized to assist people in many different aspects, such as healthcare, with the help of machine learning.image & COPY; 2023 WILEY-VCH GmbH
Bu yayın 06.11.1981 tarihli ve 17506 sayılı Resmî Gazete’de yayımlanan 2547 sayılı Yükseköğretim Kanunu’nun 4/c, 12/c, 42/c ve 42/d maddelerine dayalı 12/12/2019 tarih, 543 sayılı ve 05 numaralı Üniversite Senato Kararı ile hazırlanan Sakarya Üniversitesi Açık Bilim ve Açık Akademik Arşiv Yönergesi gereğince açık akademik arşiv sistemine açık erişim olarak yüklenmiştir.
2023-01-01T00:00:00ZEvaluation of the relationship between idiopathic restless legs syndrome and serum hepcidin levelsKoksal, Semra AlacamUlas, Sena BoncukAcar, Bilgehan AtilganAcar, TurkanAras, Yesim GuzeyKoroglu, Mehmethttps://hdl.handle.net/20.500.12619/1023262024-02-23T11:45:28Z2023-01-01T00:00:00ZEvaluation of the relationship between idiopathic restless legs syndrome and serum hepcidin levels
Koksal, Semra Alacam; Ulas, Sena Boncuk; Acar, Bilgehan Atilgan; Acar, Turkan; Aras, Yesim Guzey; Koroglu, Mehmet
IntroductionThe relationship between restless legs syndrome (RLS) and iron deficiency is a well-known topic. However, the etiology of the disease has not been determined. As the central iron deficiency is the most critical biological abnormality for RLS, we planned a study examining the relationship between RLS and hepcidin, which is the only regulatory hormone of iron metabolism known so far.MethodsInternational Restless Legs Syndrome Study Group diagnostic criteria (2014) were taken as a basis. A total of 40 RLS patients and 40 healthy controls were included in the study. To avoid the potential variables that might cause secondary RLS, all the participants were asked to provide hemogram, ferritin, iron, thyroid function tests, and sedimentation analysis. The hepcidin levels were measured with a Human Hepcidin (Hepc 25) ELISA kit (MyBioSource).ResultsThe statistically significant results of our analysis show that the red blood cell count, the neutrophil count, the percentage of lymphocytes and neutrophils, and, more distinctively, hepcidin levels were higher in RLS patients in comparison with the control group.ConclusionIn this study, no differences were found in iron and ferritin values. High levels of hepcidin, the main regulator of iron metabolism, in those with primary RLS support the possibility that hepcidin may play a role in the pathogenesis of RLS. We think that larger studies on this subject can give clearer ideas. & BULL; Iron mechanisms are held responsible for the pathogenesis of RLS.& BULL; The serum hepcidin level is higher in Restless Legs Syndrome patients.& BULL; Hepcidin may be a marker that is involved in iron metabolism and also plays a role in RLS. image
Bu yayın 06.11.1981 tarihli ve 17506 sayılı Resmî Gazete’de yayımlanan 2547 sayılı Yükseköğretim Kanunu’nun 4/c, 12/c, 42/c ve 42/d maddelerine dayalı 12/12/2019 tarih, 543 sayılı ve 05 numaralı Üniversite Senato Kararı ile hazırlanan Sakarya Üniversitesi Açık Bilim ve Açık Akademik Arşiv Yönergesi gereğince açık akademik arşiv sistemine açık erişim olarak yüklenmiştir.
2023-01-01T00:00:00ZElectronic Alert System Significantly Increases HBV Screening Rates Before Immunosuppressive TreatmentsKoksal, Aydin SerefToka, BilalSadecolak, MustafaAcar, SencanEminler, Ahmet TarikTozlu, MukaddesKarabay, Oguzhttps://hdl.handle.net/20.500.12619/1023232024-02-23T11:45:28Z2023-01-01T00:00:00ZElectronic Alert System Significantly Increases HBV Screening Rates Before Immunosuppressive Treatments
Koksal, Aydin Seref; Toka, Bilal; Sadecolak, Mustafa; Acar, Sencan; Eminler, Ahmet Tarik; Tozlu, Mukaddes; Karabay, Oguz
Background: Hepatitis B Virus (HBV) screening rates before starting immunosuppressive treatments are suboptimal. The aim of the study was to evaluate the efficacy of a new electronic alert system in increasing HBV screening rates. Methods: The electronic alert system, HBVision2, identifies patients at risk of HBV reactivation when a pre-determined International Classification of Diseases (ICD)-10 code is entered into the hospital's database or immunosuppressive treatment is prescribed. The system evaluates the prior Hepatitis B Surfage Antigen (HBsAg) and anti-Hepatitis B Core Immunglobulin G (HBc IgG) results and sends an alert code to the clinician for screening if serology is not completely available or consult a specialist in case of positive serology. The HBV screening and consultation rates of patients before (control group) and after HBVision2 were retrospectively compared. The clinical course of unscreened and/or unconsulted patients was determined, and the clinical efficacy of HBVision2 in preventing HBVr was predicted. Results: Control group included 815 patients (52.6% male, mean age: 60 +/- 12, 82.5% with oncologic malignancy) and study group included 504 patients (56% male, mean age: 60 +/- 13, 91.4% with oncologic malignancy). Groups were similar with respect to gender, mean age, and HBVr risk profile of the immunosuppressive treatment protocols. Overall, both HBsAg (from 55.1% to 93.1%) and anti-HBc IgG screening rates significantly increased (from 4.3% to 79.4%) after the electronic alert system (P <.001, for both). Consultation rates of anti-HBc IgG-positive patients significantly increased from 40% to 72.7% (P = .012). HBVr developed in 2 patients (2.6%) who were not screened and/or consulted after the alert system. Alert program prevented the development of HBVr in 10 patients (1.9%) of the study group and decreased the development of HBVr by 80%. Conclusion: Electronic alert system significantly improved HBsAg and anti-HBc IgG screening rates before starting immunosuppressive treatment and prevented the development of HBVr to a great extent. However, screening rates are still below optimal and need to be improved.
Bu yayın 06.11.1981 tarihli ve 17506 sayılı Resmî Gazete’de yayımlanan 2547 sayılı Yükseköğretim Kanunu’nun 4/c, 12/c, 42/c ve 42/d maddelerine dayalı 12/12/2019 tarih, 543 sayılı ve 05 numaralı Üniversite Senato Kararı ile hazırlanan Sakarya Üniversitesi Açık Bilim ve Açık Akademik Arşiv Yönergesi gereğince açık akademik arşiv sistemine açık erişim olarak yüklenmiştir.
2023-01-01T00:00:00ZContribution of vanadium particles to thermal movement of correlated two-dimensional pancake Abrikosov vortices in Bi-2223 superconducting systemUlgen, Asaf TolgaErdem, UmitYildirim, GurcanTurkoz, Mustafa BurakTurgay, Tahsinhttps://hdl.handle.net/20.500.12619/1023242024-02-23T11:45:28Z2023-01-01T00:00:00ZContribution of vanadium particles to thermal movement of correlated two-dimensional pancake Abrikosov vortices in Bi-2223 superconducting system
Ulgen, Asaf Tolga; Erdem, Umit; Yildirim, Gurcan; Turkoz, Mustafa Burak; Turgay, Tahsin
This article breaks new ground in understanding of variation in the magnetic strength performance, flux pinning and energy dissipation mechanism of polycrystalline bulk Bi1.8Sr2.0Ca2.2Cu3.0Oy (Bi-2223) superconducting materials added with the different vanadium concentration level (0.0 <= x <= 0.30) under the magnetic field strengths applied up to 5 T for the first time. We provide the sophisticated and phenomenological discussions on the magnetoresistivity measurement results in three main sections along the paper. All the findings show that the increase of both the vanadium concentration in the crystal structure and external magnetic field strength damages significantly the magnetic strength performance, vortex dynamics, flux pinning ability and vortex lattice elasticity of bulk Bi-2223 superconducting ceramics. The vanadium addition promotes thermally the movement of correlated two-dimensional (2D) pancake Abrikosov vortices between the in-plane Cu-O-2 layers in the valance band, vortex lattice elasticity, vortex dynamics, distance for interlayer Josephson couplings and flux pinning centers and the theoretical computations confirm the remarkable degradation in the formation of super-electrons in the Bi-2223 crystal system. Thus, the vanadium addition is anticipated to be one of the best selectable materials to examine the differentiation in the thermal movement of correlated 2D Pancake Abrikosov vortices in the bulk Bi-2223 superconducting system. (c) 2022 The Author(s). Published by Elsevier Espana, S.L.U. on behalf of SECV. This is anopen access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/ by-nc-nd/4.0/).
Bu yayın 06.11.1981 tarihli ve 17506 sayılı Resmî Gazete’de yayımlanan 2547 sayılı Yükseköğretim Kanunu’nun 4/c, 12/c, 42/c ve 42/d maddelerine dayalı 12/12/2019 tarih, 543 sayılı ve 05 numaralı Üniversite Senato Kararı ile hazırlanan Sakarya Üniversitesi Açık Bilim ve Açık Akademik Arşiv Yönergesi gereğince açık akademik arşiv sistemine açık erişim olarak yüklenmiştir.
2023-01-01T00:00:00Z