Browsing by Author "Yildirim D."

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    Thermodynamics and exergoeconomic analysis of geothermal power plants
    (2012) Yildirim D.; Ozgener L.
    Fossil fuel reserves (coal, oil, natural gas, etc.) diminish day by day. In addition, rapid advancement of technology causes an increase in the amount of energy needed. This emerging situation resulted in ever increasing importance of renewable energy sources, and various systems are being developed to utilize these renewable energy sources effectively. In this study, information about Aydn-Salavatli geothermal field's features and working principles of the 2 power plants (DORA 1 and DORA 2) in the region are given. Power plants' energy and exergy efficiencies were calculated with the emphasis on the effects of thermal fluids used in power plants. Also, in this study, some correlations were developed. Power plants' sections which cause exergy losses were identified. Accordingly, improvement suggestions were presented in this study. Additionally, exergoeconomic analyses were conducted while power plants' investment costs and equipment maintenance costs were taken into consideration. © 2012 Elsevier Ltd.
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    A new method for computer-assisted detection, definition and differentiation of the urinary calculi
    (Informa Healthcare, 2014) Yildirim D.; Ozturk O.; Tutar O.; Nurili F.; Bozkurt H.; Kayadibi H.; Karaarslan E.; Bakan S.
    Purpose: Urinary stones are common and can be diagnosed with computed tomography (CT) easily. In this study, we aimed to specify the opacity characteristics of various types of calcified foci that develop through the urinary system by using an image analysis program. With this method, we try to differentiate the calculi from the non-calculous opacities and also we aimed to present how to identify the characteristic features of renal and ureteral calcules. Materials and methods: We obtained the CT studies of the subjects (n = 48, mean age = 41 years) by using a dual source CT imaging system. We grouped the calculi detected in the dual-energy CT sections as renal (n = 40) or ureteric (n = 45) based on their locations. Other radio-opaque structures that were identified outside but within close proximity of the urinary tract were recorded as calculi "mimickers". We used ImageJ program for morphological analysis. All the acquired data were analyzed statistically. Results: According to thorough morphological parameters, there were statistically significant differences in the angle and Feret angle values between calculi and mimickers (p < 0.001). Multivariate logistical regression analysis showed that Minor Axis and Feret angle parameters can be used to distinguish between ureteric (p = 0.003) and kidney (p = 0.001) stones. Conclusions: Computer-based morphologic parameters can be used simply to differentiate between calcular and noncalcular densities on CT and also between renal and ureteric stones. © 2014 Informa Healthcare USA, Inc. All rights reserved.
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    Development and Implementation of the AIDA International Registry for Patients With VEXAS Syndrome
    (Frontiers Media S.A., 2022) Vitale A.; Caggiano V.; Della Casa F.; Hernández-Rodríguez J.; Frassi M.; Monti S.; Tufan A.; Telesca S.; Conticini E.; Ragab G.; Lopalco G.; Almaghlouth I.; Pereira R.M.R.; Yildirim D.; Cattalini M.; Marino A.; Giani T.; La Torre F.; Ruscitti P.; Aragona E.; Wiesik-Szewczyk E.; Del Giudice E.; Sfikakis P.P.; Govoni M.; Emmi G.; Maggio M.C.; Giacomelli R.; Ciccia F.; Conti G.; Ait-Idir D.; Lomater C.; Sabato V.; Piga M.; Sahin A.; Opris-Belinski D.; Ionescu R.; Bartoloni E.; Franceschini F.; Parronchi P.; de Paulis A.; Espinosa G.; Maier A.; Sebastiani G.D.; Insalaco A.; Shahram F.; Sfriso P.; Minoia F.; Alessio M.; Makowska J.; Hatemi G.; Akkoç N.; Li Gobbi F.; Gidaro A.; Olivieri A.N.; Al-Mayouf S.M.; Erten S.; Gentileschi S.; Vasi I.; Tarsia M.; Mahmoud A.A.-M.A.; Frediani B.; Fares Alzahrani M.; Laymouna A.H.; Ricci F.; Cardinale F.; Jahnz-Rózyk K.; Tosi G.M.; Crisafulli F.; Balistreri A.; Dagostin M.A.; Ghanema M.; Gaggiano C.; Sota J.; Di Cola I.; Fabiani C.; Giardini H.A.M.; Renieri A.; Fabbiani A.; Carrer A.; Bocchia M.; Caroni F.; Rigante D.; Cantarini L.
    Objective: The aim of this paper is to present the AutoInflammatory Disease Alliance (AIDA) international Registry dedicated to Vacuoles, E1 enzyme, X-linked, Autoinflammatory, Somatic (VEXAS) syndrome, describing its design, construction, and modalities of dissemination. Methods: This Registry is a clinical, physician-driven, population- and electronic-based instrument designed for the retrospective and prospective collection of real-life data. Data gathering is based on the Research Electronic Data Capture (REDCap) tool and is intended to obtain real-world evidence for daily patients' management. The Registry may potentially communicate with other on-line tools dedicated to VEXAS syndrome, thus enhancing international collaboration and data sharing for research purposes. The Registry is practical enough to be easily modified to meet future needs regarding VEXAS syndrome. Results: To date (April 22nd, 2022), 113 Centers from 23 Countries in 4 continents have been involved; 324 users (114 Principal Investigators, 205 Site Investigators, 2 Lead Investigators, and 3 data managers) are currently able to access the registry for data entry (or data sharing) and collection. The Registry includes 4,952 fields organized into 18 instruments designed to fully describe patient's details about demographics, clinical manifestations, symptoms, histologic details about skin and bone marrow biopsies and aspirate, laboratory features, complications, comorbidities, therapies, and healthcare access. Conclusion: This international Registry for patients with VEXAS syndrome will allow the achievement of a comprehensive knowledge about this new disease, with the final goal to obtain real-world evidence for daily clinical practice, especially in relation to the comprehension of this disease about the natural history and the possible therapeutic approaches. This Project can be found on https://clinicaltrials.gov NCT05200715. Copyright © 2022 Vitale, Caggiano, Della Casa, Hernández-Rodríguez, Frassi, Monti, Tufan, Telesca, Conticini, Ragab, Lopalco, Almaghlouth, Pereira, Yildirim, Cattalini, Marino, Giani, La Torre, Ruscitti, Aragona, Wiesik-Szewczyk, Del Giudice, Sfikakis, Govoni, Emmi, Maggio, Giacomelli, Ciccia, Conti, Ait-Idir, Lomater, Sabato, Piga, Sahin, Opris-Belinski, Ionescu, Bartoloni, Franceschini, Parronchi, de Paulis, Espinosa, Maier, Sebastiani, Insalaco, Shahram, Sfriso, Minoia, Alessio, Makowska, Hatemi, Akkoç, Li Gobbi, Gidaro, Olivieri, Al-Mayouf, Erten, Gentileschi, Vasi, Tarsia, Mahmoud, Frediani, Fares Alzahrani, Laymouna, Ricci, Cardinale, Jahnz-Rózyk, Tosi, Crisafulli, Balistreri, Dagostin, Ghanema, Gaggiano, Sota, Di Cola, Fabiani, Giardini, Renieri, Fabbiani, Carrer, Bocchia, Caroni, Rigante and Cantarini.
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    Impact of HLA-B51 on Uveitis and Retinal Vasculitis: Data from the AIDA International Network Registries on Ocular Inflammatory Disorders
    (Taylor and Francis Ltd., 2025) Sota J.; Guerriero S.; Lopalco G.; Tufan A.; Ragab G.; AlMaglouth I.; Govoni M.; Sfikakis P.P.; Frassi M.; Vitale A.; Kardas R.C.; Triggianese P.; Chimenti M.S.; Aboabat A.A.; Piga M.; Monti S.; Sebastiani G.D.; Yildirim D.; Conforti A.; Gentileschi S.; Dammacco R.; Hinojosa-Azaola A.; Kawakami-Campos P.A.; Ruffilli F.; Torres-Ruiz J.; Thabet M.; Atig A.; Ruscitti P.; Cataldi G.; Viapiana O.; Hatemi G.; Karakoç A.; Costi S.; Iagnocco A.; Crisafulli F.; Fragoulis G.; Del Giudice E.; Hegazy M.T.; Paroli M.P.; Şahin A.; Morrone M.; Iannone F.; Opris-Belinski D.; Asfina K.N.; Barone P.; Gaggiano C.; Kucuk H.; Gicchino M.F.; Carubbi F.; Caggiano V.; Laskari K.; Tharwat S.; Direskeneli H.; Alibaz-Oner F.; Sevik G.; Maier A.; Laymouna A.H.; Emmi G.; Akkoç N.; Tarsia M.; Sbalchiero J.; Conti G.; Spinella R.; La Torre F.; Tombetti E.; Amin R.H.; Mauro A.; Karamanakos A.; Carreño E.; Fonollosa A.; Cattalini M.; Breda L.; de-la-Torre A.; Wiesik-Szewczyk E.; Cifuentes-González C.; Ozen S.; Mazzei M.A.; Tosi G.M.; Frediani B.; Balistreri A.; Batu E.D.; Gupta V.; Cantarini L.; Fabiani C.
    Purpose: The clinical relevance of human leukocyte antigen (HLA) subtypes such as HLA-B51 on Behçet’s disease (BD)-related uveitis and non-infectious uveitis (NIU) unrelated to BD remains largely unknown. Methods: Data were prospectively collected from the International AIDA Network Registry for BD and for NIU. We assessed differences between groups (NIU unrelated to BD and positive for HLA-B51, BD-related uveitis positive for HLA-B51 and BD-related uveitis negative for HLA-B51) in terms of long-term ocular complications, visual acuity (VA) measured by best corrected visual acuity (BCVA), anatomical pattern, occurrence of retinal vasculitis (RV) and macular edema over time. Results: Records of 213 patients (341 eyes) were analyzed. No differences in complications were observed (p = 0.465). With regard to VA, a significant difference was detected in median BCVA (p = 0.046), which was not maintained after Bonferroni correction (p = 0.060). RV was significantly more prevalent in NIU-affected patients who tested positive for HLA-B51, irrespective of the systemic diagnosis of BD (p = 0.025). No differences emerged in the occurrence of macular edema (p = 0.99). Conclusions: Patients with NIU testing positive for HLA-B51 exhibit an increased likelihood of RV throughout disease course, irrespective of a systemic diagnosis of BD. The rate of complications as well as VA are comparable between NIU cases unrelated to BD testing positive for HLA-B51 and uveitis associated with BD. Therefore, it is advisable to perform the HLA-B typing in patients with NIU or retinal vasculitis, even in the absence of typical BD features. © 2024 Taylor & Francis Group, LLC.