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Sahin, Mustafa,Oguz, Yuksel,Buyuktumturk, Fuat The Korean Institute of Electrical Engineers 2015 Journal of Electrical Engineering & Technology Vol.10 No.4
In this study, artificial neural networks were used to determine the intensity of brightness in interior spaces. The illumination elements to illuminate indoor spaces were considered, not individually, but as a system. So, during the planned maintenance periods of an illumination system, after its design and installation, simple brightness level measurements must be taken. For a three-dimensional evaluation of the brightness level in indoor spaces in a speedy and accurate manner, the obtained brightness level measurement results and artificial neural network model were used. Upon estimation of the most suitable brightness level for indoor spaces by using the artificial neutral network model, the energy demands required by the illumination elements decreased. Consequently, in this study, with estimations of brightness levels, the extent to which the artificial neutral networks become successful was observed and more correct results have been obtained in terms of both economy and usage.
Effect of constipation on acute urinary retention following transrectal prostate biopsy
Cahit Sahin,Orhun Sinanoglu,Yavuz Karaca,Alpaslan Yuksel,Eyup Veli Kucuk,Kemal Sarica,Erhan Erdogan 대한비뇨의학회 2023 Investigative and Clinical Urology Vol.64 No.3
Purpose: To evaluate the possible effect of constipation on the acute urinary retention (AUR) after transrectal ultrasound-guided prostate biopsy (TRUS PB). Materials and Methods: A total of 1,167 patients with prostate-specific antigen (PSA) >4 ng/mL and/or abnormal digital rectal examination underwent a standard 12 core transrectal ultrasound-guided prostate needle biopsy in our hospital and the findings were examined prospectively. Chronic constipation (CC) was defined according to the Rome IV criteria. All cases were well evaluated with respect to clinical-histopathological factors; International Prostate Symptom Score (IPSS), prostate volume, post-void residue, age, body mass index, histopathological inflammation, and AUR. Results: The mean age of patients was 64.63±8.31 years, the PSA level was 11.60±16.83 ng/mL, and the prostate volume was 54.66±25.44 mL. In 265 cases (22.7%), CC anamnesis was present and AUR developed in 28 (2.4%) of the cases. In the multivariate analysis for the risk of developing urinary retention, prostate volume, pre-operative IPSS, and presence of CC requiring manual maneuvers to facilitate defecation were found to be risk factors (p=0.023, 0.010, and 0.001, respectively). Conclusions: Our findings demonstrated that CC may be a critical factor in the prediction of AUR formation following TRUS PB.
Tugce Turhan,Nurettin Sahiner,Yuksel Guvenilir Avcıbası 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.4
In this study, polymeric hydrogels derived from 3-sulfopropyl methacrylate (SPM) were used in the preparation of composite-catalyst system in hydrogen generation from hydrolysis of NaBH4. In order to generate pores and determine their effect on hydrogen production, silica based p(SPM) hydrogels were synthesized also prepared. Additionally, the effects of metal type, temperature, the amount of the catalyst, metal reloading, and reusability were investigated. The activation energy, activation enthalpy,and activation entropy for the hydroylsis reaction of NaBH4 solution in the presence of p(SPM)–Co catalyst system were calculated as 41.67 kJ mol-1, 38.15 kJ mol-1, -173.139 J/mol K, respectively.
Ozge Yilmaz,Ahmet Turkeli,Sebnem Sahin,Hasan Yuksel 대한천식알레르기학회 2014 Allergy, Asthma & Immunology Research Vol.6 No.4
Assessment of asthma control in preschool children is important for therapeutic decisions. Aim of this study was to evaluate the predictive value ofTRACK questionnaire scores for subsequent clinical parameters and to investigate the validity and reliability of the Turkish version of the TRACKquestionnaire. We enrolled 100 children with asthma aged 4 years or younger in this cohort study. We recorded sociodemographic characteristicsand clinical severity parameters. A pediatric allergist filled in the asthma severity scale and the caregiver of the child filled in the TRACK questionnaire. We called in the children again at the end of one month and recorded the same parameters and administered TRACK again. Uncontrolled asthmawas defined as a TRACK score below 80. According to the TRACK score, 65% of the children had controlled asthma initially while at the end ofthe study 64.1% had controlled asthma. At the beginning of the study, all clinical parameters were worse in children with uncontrolled asthma accordingto TRACK score. Similarly, other objective clinical parameters during the following one month period were worse in children with initial uncontrolledasthma. Cronbach’s alpha score for the TRACK questionnaire was 0.84. Turkish TRACK questionnaire is a valid and reliable tool that is predictiveof short term asthma prognosis.