Meslek Yüksek Okulları / Vocational Schools
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Item Jinekoloji ve obstetride acil hasta bakımı ve yönetimi(2019) Çolak, Eser; Ceran, Ufuk; Arman Çaldır, Feyza; Taşdemir, Ümit; Özdemir, Duygu; Eroglu, Semra; Gökmen, Zeynel; Silahlı, Musa; Türk, Emin; Yücesan, Selçuk; Üstün, Burcu; Coşkun, Bora; Buğra, Coşkun; Gürbüz, Ali SamiItem Biyokimya(2018) Güven, AyselItem Covering the More Visible Region by Electrochemical Copolymerization of Carbazole and Benzothiadiazole Based Donor-Acceptor Type Monomers(2019) Cansu-Ergun, Emine Gul; 0000-0002-3941-4345; I-7385-2017An electrochromic copolymer film of 2-(3,3-dihexyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepin-6-yl)-7-(3,3-dihexyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepin-8-yl)-9H-carbazole (M1) and 4,7-bis(thiophen-2-yl)benzo[c][1,2,5]thiadiazole (M2) was prepared via electrochemical technique. The copolymerization was performed with one to one monomer feed ratio. Electrochemical and optical properties of the resulting copolymer film (P3) and the homopolymer films of M1 and M2 (P1 and P2) were investigated by using cyclic voltammetry and UV-Vis spectrometry techniques, and the corresponding results were compared. Incorporation of M1 and M2 into copolymer matrix was clearly observed on the resulting cyclic voltammograms and UV-Vis spectra. P3 covered the visible regions coming from both P1 and P2, and exhibited a neutral state darker color than those of homopolymers. P3 film was found to have a multichromic behavior, appearing as brown in its neutral state while changing its color upon oxidation to dark-gray (at about 0.3 V), to blue (at about 0.6 V) and finally to grayish cyan (beyond 0.9 V), with a corresponding optical band gap of 1.65 eV.Item Pulse frequency fluctuations of magnetars(2019) Cerri-Serim, D.; Serim, M. M.; Sahiner, S.; Inam, S.C.; Baykal, A.; 0000-0003-0820-9186Using RXTE, Chandra, XMM-Newton and Swift observations, we construct the power spectra and torque noise strengths of magnetars for the first time. For some of the sources, on time-scales of months to years, we measure strong red noise that might be a consequence of their outbursts. We compare the noise strengths of magnetars with those of radio pulsars by investigating the possible correlations of noise strength with spin-down rate, magnetic field and age. Using these correlations, we find that the noise strengths of magnetars obey similar trends as radio pulsars. However, we do not find any correlation between noise strength and X-ray luminosity, a correlation that has been seen in accretion-powered pulsars. Our findings suggest that the noise behaviour of magnetars resembles that of radio pulsars, but magnetars possess higher noise levels likely because of their stronger magnetic fields.Item Value of cardiopulmonary exercise testing in the diagnosis of coronary artery disease(2019) Akinci Ozyurek, Berna; Savas Bozbas, Serife; Aydinalp, Alp; Bozbas, Huseyin; Ulubay, Gaye; 31414640Introduction: Respiratory and cardiac functions in association with skeletal and neurophysiologic systems can be evaluated with cardiopulmonary exercise testing (CPET). Compared to treadmill exercise test, CPET provides more comprehensive data about the hemodynamic response to exercise. Materials and Methods: We aimed to evaluate the relationship with CPET findings and coronary lesions identified on angiography in patients with angina pectoris who underwent teradmill exercise, CPET and coronary angiography (CAG). By this way we sought to examine the CPET parameters that might be predictive for coronary artery disease (CAD) before diagnostic exercise test results and ischemia symptoms develop. Thirty patients in whom CAG was planned because of symptoms and exercise test results were enrolled in the study. Oxygen consumption (VO2), carbon dioxide production (VCO2), minute ventilation (VE), maximum work rate (WR), Delta VO2/Delta WR and O-2 pulse (VO2/HR) values were calculated. Significant CAD was defined as >= 50% narrowing in at least one of the coronary arteries. Results: The mean age was 60.4 +/- 8.9 years ve 21 (65.6%) of subjects were male. On CAG, CAD was detected in 19 (59.4%) patients. Maximum heart rate, heart rate reserve (HRR), VE/VCO2 measured at anaerobic threshold AT) and VO2 (mL/kg/min) were significantly differed in patients with CAD than those without (p= 0.031; p= 0.041; p= 0.028; p= 0.03 respectively). Peak VO2, VO2/WR and O-2 pulse values were higher in patients with normal angiographic results than those with CAD but the difference did not reach to statistical significance. Conclusion: The findings of our study indicate that among CPET parameters AT VE/VCO2, ATVO(2) (mL/kg/dk) and HRR can have predictive value in the diagnosis of CAD. We think that these parameters might be used in the evaluation of patients with angina and dyspnea suspected of CAD. In conclusion parameters obtained during the test that are not influenced by patient's effort might increase the value of CPET in the diagnosis CAD.Item Efficacy of ultrasound-guided bilateral erector spinae plane block in pediatric laparoscopic cholecystectomy: Case series(2019) Karaca, Omer; Pinar, Huseyin Ulas; 0000-0003-0473-6763; 31741347; Q-2420-2015Postoperative opioid administration can cause various side effects, such as drowsiness, respiratory distress, postoperative nausea, and vomiting. The use of non-opioid medications as part of a multimodal analgesia method has been increasingly suggested in the management of acute postsurgical pain. Erector spinae plane block (ESPB), which is a regional anesthesia technique, blocks both visceral and somatic nerve fibers.Though it is infrequently used in young patients, presently described is a series of cases in which ESPB was successfully used in the performance of pediatric laparoscopic cholecystectomy. Ultrasound-guided bilateral ESPB was performed on 4 patients who underwent a laparoscopic cholecystectomy. An injection of 0.25% bupivacaine was administered into the interfascial area on each side in the pre-incisional period after the anesthesia induction (total anesthetic: 2.5 mg/kg). Postoperative pain control was planned at 10 mg/kg intravenous paracetamol every 8 hours. Numeric rating scale pain scores were less than 3 points in the post-anesthetic care unit, and at 1, 2, 4, 8, 12, and 24 hours. No rescue analgesic (1 mg/kg tramadol) was needed. None of the typical complications, such as drowsiness or nausea, were observed and no block-related complications were recorded. Bilateral ESPB that is a part of multimodal analgesia regimen can provide effective analgesia for pediatric laparoscopic cholecystectomy patients in the first 24 hours postoperatively.Item Explaining intrapreneurial behaviors of employees with perceived organizational climate and testing the mediating role of organizational identification: A research study among employees of Turkish innovative firms(2014) Tastan, Secil Bal; Gucel, CemThis study examines perceived organizational climate and organizational identification as potential antecedents of employees' intrepreneurial behaviors. In particular, the study suggests positive relationships between perceived organizational climate components-structural support and recognition-and intrepreneurial behaviors construct. In addition, employees' organizational identification is suggested to have a mediating role on the relationship between organizational climate and intrepreneurial behaviors. The survey of this study is performed among employees working in high performing and innovative firms operating in White Good Manufacturing, Food and Drink, Telecommunication, and Textile industries in Turkey. The obtained data from the questionnaires are analyzed through the SPSS statistical packaged software. Analyses results revealed that both dimensions of organizational climate (structural support and organizational recognition) significantly and positively related to intrepreneurial behaviors and perceived organizational identification mediate the effects of the organizational climate on the intrepreneurial behaviors construct. (C) 2014 The Authors. Published by Elsevier Ltd.Item Blastoid Variant Mantle Cell Lymphoma with Complex Karyotype Including 11q Duplication(2014) Ozer, Ozge; Toprak, Selami K.; Ote, Enver; Yilmaz, Zerrin; Sahin, Feride IffetWe describe a case of blastoid mantle cell lymphoma with a complex karyotype. The blastoid variant is a rare type of non-Hodgkin lymphoma exhibiting an aggressive clinical course. Mantle cell lymphoma is a distinct entity of mature B-cell neoplasms genetically characterized by the presence of t(11;14). In the present case, conventional analysis revealed structural abnormalities of chromosomes 2, 4, 6, 10, 13, and 19, along with 3 additional marker chromosomes. The derivative 1 chromosome determined in the case was a result of t(1p;11q). Our interesting finding was the presence of a different translocation between 11q and chromosome 1 in addition to t(11;14). Thus, the resulting 11q duplication was believed to additionally increase the enhanced expression of cyclin D1 gene, which is responsible in the pathogenesis of the disease. Fluorescence in situ hybridization method by the t(11;14) probe revealed clonal numerical abnormalities of chromosomes 11 and 14 in some cells. The detection of multiple abnormalities explains the bad prognosis in the present case. On the basis of our findings, we can easily conclude that results of cytogenetic analyses of similar mantle cell lymphoma patients would provide clues about new responsible gene regions and disease prognosis. In conclusion, it has been suggested that the presence of multiple chromosomal aberrations in addition to the specific t(11;14) may have a negative impact on clinical course and survival rate.Item PANCREATIC CYSTIC LYMPHANGIOMA: DIAGNOSTIC APPROACH WITH MDCT AND MR IMAGING(2014) Macin, G.; Hekimoglu, K.; Uner, H.; Tarhan, C.Lymphangiomas are rare congenital benign tumors arising from the lymphatic system mostly encountered in the neck and axillary regions of pediatric patients. Pancreatic cystic lymphangiomas very rarely occur in adults. Radio-logically, the lesion may mimic pancreatic carcinoma and should be considered in the differential diagnosis of any patient found to have an abdominal cystic mass. In this article, we present a 50-year-old man who presented with pain in the upper abdomen, nausea, and abdominal swelling. On computed tomography (CT) and magnetic resonance (MR) imaging, a gross septated cystic lesion was detected in the upper abdomen which extended from the pancreatic corpus to the left liver lobe. The patient underwent complete resection of tumor Pathology revealed a cystic lymphangioma.Item The effect of dentin desensitizers, and Nd:YAG laser pre-treatment on microtensile bond strength of self-adhesive resin cement to dentin(2014) Acar, Ozlem; Tuncer, Duygu; Yuzugullu, Bulem; Celik, CigdemPURPOSE. The purpose of this study is to evaluate if pre-treatment with desensitizers have a negative effect on microtensile bond strength before cementing a restoration using recently introduced self-adhesive resin cement to dentin. MATERIALS AND METHODS. Thirty-five human molars' occlusal surfaces were ground to expose dentin; and were randomly grouped as (n=5); 1) Gluma-(Glutaraldehyde/HEMA) 2) Aqua-Prep F-(Fluoride), 3) Bisblock-(Oxalate), 4) Cervitec Plus-(Clorhexidine), 5) Smart protect-(Triclosan), 6) Nd:YAG laser, 7) No treatment (control). After applying the selected agent, RelyX U200 self-adhesive resin cement was used to bond composite resin blocks to dentin. All groups were subjected to thermocycling for 1000 cycles between 5-55 degrees C. Each bonded specimen was sectioned to microbars (6 mm X 1 mm X 1 mm) (n=20). Specimens were submitted to microtensile bond strength test at a crosshead speed of 0.5 mm/min. Kolmogorov-Smirnov, Levene's test, Kruskal Wallis One-way Analysis of Variance, and Conover's nonparametric statistical analysis were used (P<.05). RESULTS. Gluma, Smart Protect and Nd:YAG laser treatments showed comparable microtensile bond strengths compared with the control group (P>.05). The microtensile bond strengths of Aqua-Prep F, and Cervitec Plus were similar to each other but significantly lower than the control group (P<.05). Bisblock showed the lowest microtensile bond strength among all groups (P<.001). Most groups showed adhesive failure. CONCLUSION. Within the limitation of this study, it is not recommended to use Aqua-prep F, Cervitec Plus and Bisblock on dentin when used with a self-adhesive resin cement due to the decrease they cause in bond strength. Beside, pre-treatment of dentin with Gluma, Smart protect, and Nd:YAG laser do not have a negative effect.