494 research outputs found
Erratum: Optical transition rates of a meso-substituted thiacarbocyanine in methanol-in-oil reverse micelles (Journal of Luminescence (2005) 113 (1-8) DOI:10.1016/j.jlumin.2004.07.009)
No full textThe correct correspondence information for the first author is:
Serdar Özçelik
Chemistry Department,
Izmir Institute of Technology,
Urla-35430 Izmir, Turkey
E-mail address: [email protected]
Tel.: +90 232 750 7557
fax: +90 232 750 750
Performance maximization of network assisted mobile data offloading with opportunistic Device-to-Device communications
No full textA. Serdar Tan (MEF Author)Mobile data traffic inside mobile operator's infrastructure is increasing exponentially every year. This increasing demand forces mobile network operators (MNOs) to seek for alternative communication methods in order to relieve the traffic load in base stations, especially in highly populated and crowded environments. Network assisted data offload and Device-to-Device(D2D) communications are two prominent methods to help MNOs solve this problem. In this study, a data offload framework is developed that incorporates network assisted multiple attribute decision making (MADM) for best network selection and D2D communications for exploiting user proximity in crowded environments. The performance of the framework is evaluated with simulation results as well as analytic solutions and performance bounds. The simulation results indicate the superiority of incorporating network-based information besides user-based information in offloading decisions and demonstrates the significant benefits of D2D communications when the density of D2D users is properly adjusted. The simulation results depict that up to 168% and 200% increase in user satisfaction and throughput can be achieved under high network load scenarios at optimal D2D density. (C) 2018 Elsevier B.V. All rights reserved.WOS:0004411171000032-s2.0-85047401058Science Citation Index ExpandedArticleUluslararası işbirliği ile yapılmayan - HAYIRAğustosYÖK - 2017-1
Çimkent Ahıska Türkleri Derneği başkanı Latif Şen ve Ahıska Gazetesi genel yayın yönetmeni Ruşen Mehmetoğlu ile söyleşi
No full textYılmaz, Serdar (Arel Author)
Dünya Ahıska Türkleri Birliği başkanı Ziyaettin İsmihanoğlu Kassanov ile söyleşi
No full textYılmaz, Serdar (Arel Author)
Regression Analysis of Stock Exchanges During the Ramadan Period: Analysis of 16 Countries
No full textA. Serdar Tan (MEF Author)##nofulltext##..
Analgesics effect of intra-articular bupivacaine injection on pain score in anterior cruciate ligament surgery: a randomized clinical trial
No full text<p>Abstract Background: The aim of this study was to examine the effects of injection timing and drainage clamps on patient pain scores in intra-articular local anesthetic applications after arthroscopic anterior cruciate ligament (ACL) reconstruction. Materials and Methods: Forty patients undergoing arthroscopic ACL reconstruction were randomly allocated to one of the four study groups according to the time of the intraarticular bupivacaine (20 ml) injection and the presence of the drainage clamps as follows: Preoperative injection group (PO) received bupivacaine injection 20 minutes prior to the operation, Drain Open group (DO) received bupivacaine injection following the operation while the hemovac drain was open, Drain closed group (DC) received bupivacaine injection following the operation while the hemovac drain was closed, and the control group in which the subjects did not receive any intraarticular injections. Results: The VAS score for postoperative joint pain was lowest in PO group among all groups at the postoperative 2nd hour. At the 4th and the 6th postoperative hours the VAS score for postoperative joint pain was similar in the PO and DC groups and was lower than that of the DO group and the controls. However, the VAS score at the postoperative 12th hour was lower in DO and DC groups that the PO group and the controls. Conclusions: The VAS score for postoperative joint pain changes with respect to the timing of the injection and the presence or absence of drainage. Key words: intra-articular, bupivacaine, postoperative pain scores</p>
Upper Extremity Problems and Functioning in Patients with end Stage Renal Failure Receiving Haemodialysis
No full textObjective: This study aims to evaluate upper extremity problems, upper extremity and hand functions in haemodialysis patients with chronic renal failure and to investigate differences between diabetic and non-diabetic patients.
Materials and Methods: Demographic characteristics, upper extremity symptoms, The Quick Disabilities of the Arm, Shoulder and Hand Survey-Turkish scores (Q-DASH-T), Duruoz Hand Index scores, upper extremity locomotor system and neurologic system examinations of 150 haemodialysis patients were evaluated.
Results: The most frequently detected problems in upper extremities were shoulder periarthritis (18%) and rotator cuff problems (12%) in all haemodialysis patients. Clinical shoulder periarthritis was detected in 25.4% of diabetic patients and 13.2% of non-diabetic patients whereas there was no statistically significant difference between the groups. Clinical rotator cuff problems were detected in 13.5% of diabetic patients and 10.9% of non-diabetic patients since there was no statistically significant difference between the groups. Carpal tunnel syndrome was detected significantly higher in diabetics compared to non-diabetics (23.7% and 2.2%, respectively). Shoulder circumference, elbow extension, first finger abduction and opposition muscle function weaknesses were significantly more frequent in the diabetic group. In all haemodialysis patients, impaired Q-DASH-T score and Duruoz Hand Index were detected as 30.7% and 16.7% respectively. There were no significant differences in terms of upper extremity and hand functions between diabetic haemodialysis patients compared to non-diabetics.
Conclusion: The most common upper extremity problems were shoulder periarthritis and rotator cuff problems in all haemodialysis patients regardless from the presence of diabetes. Carpal tunnel syndrome was found to be more prevalent in diabetic haemodialysis patients compared to non-diabetics. Regardless from the presence of diabetes, impaired upper extremity and hand functions were detected in 30.7% and 16.7% of all haemodialysis patients, respectively
Unusual sesquiterpenes from Centaurea athoa DC
No full textThree new elemane-type sesquiterpenes; athoin, 14-O-acetylathoin and methyl 14-O-acetylathoin-12-oate were isolated from the aerial parts of Centaurea athoa DC., accompanying with eight known compounds: a germacrane-type sesquiterpene; 4'-hydroxypecterolide-14-O-acetate, three phenolic compounds; p-hydroxybenzoic acid, protocatechuic acid, vanillic acid-4-O-beta-D-glucopyranoside methyl ester, an acetophenon glucoside; picein, two phenylpropane glucosides; syringin and 9-O-methyl coniferin, and a phytosterol; beta-sitosterol-3-O-beta-D-glucopyranoside. Structural elucidation of the compounds was based on both spectroscopic evidence and reference data comparison. (C) 2016 Phytochemical Society of Europe. Published by Elsevier B.V. All rights reserved.Scientific Research Projects Directorate of Ege UniversityEge University [12-ECZ-009]We thank Assoc. Prof. Serdar Gokhan Senol for authenticating the plant material, and Dr. Salih Gunnaz for all NMR measurements. This research project was supported by the Scientific Research Projects Directorate of Ege University (Project No: 12-ECZ-009)
Erratum: Comparison of cardiac magnetic resonance and cardiac ultrasound imaging findings in congenital and acquired heart diseases (Serdar Serinsoz, Remzi Akturk, Sibel Bayramoglu. Sanamed.2020;15(2):115-20.doi: 10.24125/sanamed.v15i2.418)
No full textThe authors of this paper informed us about the existence of an error. Remzi Akturk has been listed as a co-author in this article. In order to prevent ethical issues, all authors of this article agreed that he should be listed as a guest author instead of co-author because he did not contribute in data collecting. Because of that, the name Remzi Akturk is removed from the author's list in this article. All authors send a signed agreement that the name of Remzi Akturk must be removed from the author's list. According to this, the list of the authors on pages 115 and 119 "Serdar Serinsoz, Remzi Akturk, Sibel Bayramoglu" should be replaced with: "Serdar Serinsoz, Sibel Bayramoglu"
Assessment of Cognitive Functioning in Adult Women with Low Vitamin D Level Using Mini Mental State Examination and Montreal Cognitive Assessment
No full textObjective: The aim of the study was to evaluate cognitive functioning in adult women with low level vitamin D and to investigate the relationship between vitamin D and cognitive functioning.
Materials and Methods: Seventy-one women patients aged 18-50 with 25-OH vitamin D3 level <30 ng/mL referred to outpatient clinic were enrolled in the study. 25-OH vitamin D3 level, calcium, phosphate, alkaline phosphatase, parathyroid hormone (PTH) blood levels were studied in all the patients. Mini Mental State Examination (MMSE) and Montreal Cognitive Assessment (MOCA) were used to assess cognitive functioning. The patients were divided into 2 groups according to vitamin D levels: <10 ng/mL (group 1, n=34) and between 11-29 ng/mL (group 2, n=37).
Results: There was no significant difference between the group 1 and 2 for demographic and clinical characteristics except for vitamin D and PTH (p>0.05). Patients in group 1 had their vitamin D levels significantly lower and PTH levels higher than group 2 (p0.05). Although there was a relationship between education and MOCA and MMSE scores, we didn’t find any significant relationship between age and vitamin D levels and MOCA and MMSE scores.
Conclusion: Although approximately 50% of adult women whose vitamin D levels were low had reduced cognitive function, there was no relationship between vitamin D levels and cognitive functions
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