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RISS 인기검색어
- 검색키워드
- 저자 : Mehmet Tan (검색결과 4 건)
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Turan Mehmet Tan,Gökalp Erdin 대한전기학회 2022 Journal of Electrical Engineering & Technology Vol.17 No.2
The improvements and implementation of new generation equipment to the conventional grids are increasing along with the increase of the number of renewable energy power plants and smart grid components. The existing grid infrastructure is required to be modified and upgraded as a result of the increasing integration of the renewables and new generation consumers where the availability of the existing networks has to be analyzed for integration as well. In order to keep the grid stable and integrate the renewables to the grid optimally, necessary analyses have to be realized including the investigation of the optimal integration criteria. During the integration phase of the new generation consumers and producers, two ways power flows and variable power production of renewables have to be considered for system design. In this study, analysis for optimal sizing and integration studies are performed for electric vehicle parking lot and solar power plants located on the campus distribution network considering optimal sizing criteria and the aim of stabilization of voltage regulation during day time operation of solar power plant and random charging profile of electric vehicles. The proposed network is equipped with adaptive protection system to ensure stability and the reliability of the distribution network in the concept of smart grid.
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Aykut Baser,Sinan Eliaçık,Mehmet Murat Baykam,Funda Uysal Tan 대한배뇨장애요실금학회 2020 International Neurourology Journal Vol.24 No.4
Purpose: The aim of this study was to investigate the clinical manifestations of overactive bladder (OAB) with migraine as a comorbidity and to shed light on possible new treatment strategies.Methods: This study included patients aged 18 years and older who were admitted to urology and neurology outpatient clinics between March 1, 2019 and March 1, 2020 for OAB and migraine. The study questionnaire contained 3 sections: (1) questions on demographic characteristics, (2) a migraine ID test, and (3) the Overactive Bladder Inquiry Form - V8 (OAB-V8) form.Results: A total of 265 patients participated in the study. The average age of the participants was 39.75±11.93 years. The patients were divided into 3 groups according to the coexistence of OAB with migraine: group 1, OAB(+)/migraine(+); group 2, OAB(+)/migraine(-); and group 3, OAB(-)/migraine(+). The mean OAB-V8 score was 22.82 ±8.15 in group 1 and 25.64±7.49 in group 2. The mean OAB-V8 score of OAB patients with migraine as a comorbidity was statistically significantly lower than that of OAB patients without migraine (P=0.015). The median visual analogue scale (VAS) score was 7.11 (range, 2–10) in group 1 and 5.95 (range, 2–10) in group 3. This finding indicates that in patients with migraine, having OAB was associated with significantly higher VAS scores (P<0.001).Conclusions: OAB and migraine may be comorbid conditions coexisting in a single patient. This comorbidity may lead to a lower perception of OAB symptoms in OAB patients or, conversely, to a higher perception of migraine pain. Further studies are needed to elucidate how treatments for each of these diseases can affect the other disease.
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Effects of calcium silicate cements on neuronal conductivity
Deniz-Sungur Derya,Onur Mehmet Ali,Akbay Esin,Tan Gamze,Daglı-Comert Fügen,Sayın Taner Cem 대한치과보존학회 2022 Restorative Dentistry & Endodontics Vol.47 No.2
Objectives This study evaluated alterations in neuronal conductivity related to calcium silicate cements (CSCs) by investigating compound action potentials (cAPs) in rat sciatic nerves. Materials and Methods Sciatic nerves were placed in a Tyrode bath and cAPs were recorded before, during, and after the application of test materials for 60-minute control, application, and recovery measurements, respectively. Freshly prepared ProRoot MTA, MTA Angelus, Biodentine, Endosequence RRM-Putty, BioAggregate, and RetroMTA were directly applied onto the nerves. Biopac LabPro version 3.7 was used to record and analyze cAPs. The data were statistically analyzed. Results None of the CSCs totally blocked cAPs. RetroMTA, Biodentine, and MTA Angelus caused no significant alteration in cAPs (p > 0.05). Significantly lower cAPs were observed in recovery measurements for BioAggregate than in the control condition (p < 0.05). ProRoot MTA significantly but transiently reduced cAPs in the application period compared to the control period (p < 0.05). Endosequence RRM-Putty significantly reduced cAPs. Conclusions Various CSCs may alter cAPs to some extent, but none of the CSCs irreversibly blocked them. The usage of fast-setting CSCs during apexification or regeneration of immature teeth seems safer than slow-setting CSCs due to their more favorable neuronal effects.
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Tuba Bayindir,Aliye Filiz,Mustafa Iraz,Serdar Kaya,Mehmet Tan,Mahmut Tayyar Kalcioglu 대한이비인후과학회 2013 Clinical and Experimental Otorhinolaryngology Vol.6 No.1
Objectives. This experimental study investigated the possible protective effect of beta glucans on amikacin ototoxicity. Methods. Thirty-eight rats with normal distortion product otoacoustic emissions (DPOAEs) were divided into four groups. Group K was the control group. Group A was injected intramuscularly (i.m.) with amikacin 600 mg/kg/day between days 1-15. Group AB was given beta glucan gavage 1 mg/kg/day on days 0-15 and given amikacin 600 mg/kg/day i.m. on days 1-15. Group B was administered only beta glucan gavage, 1 mg/kg/day, on days 0-15. The DPOAEs were elicited in different frequency regions between 2,003 and 9,515 Hz, as distortion product diagrams (DPgrams), before and after the medication was administered, in all groups, on days 1, 5, 10, and 15. Results. No significant changes in the DPgrams were observed in group K. In group A, significant deterioration was observed at the 8,003 and 9,515 Hz frequencies on day 10, and at the 3,991, 4,557, 5,660, 6,726, 8,003, and 9,515 Hz frequencies on day 15. For group AB, statistically significant deterioration was observed at the 2,824, 8,003, and 9,515 Hz frequencies on day 15. The results for group B showed a significant improvement of hearing at the 2,378, 2,824, 3,363, and 3,991 Hz frequencies on day 1, at the 3,363, 3,991, and 8,003 Hz frequencies on day 10, and at the 8,003 Hz frequency on day 15. Conclusion. This study suggests that amikacin-induced hearing loss in rats may be limited to some extent by concomitant use of beta glucan.
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