Silver nanowire stabilized Pickering emulsions

( Turan ),최시영 한국공업화학회 2022 한국공업화학회 연구논문 초록집 Vol.2022 No.1

Leaching kinetics of Chevreul's salt in hydrochloric acid solutions

Turan Calban,Soner Kuslu,Burak Kaynarca,Sabri Colak 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.4

The aim of this study was to investigate the dissolution kinetics of Chevreul’s salt in hydrochloric acid [HCl] solutions in a mechanical agitation system and to precipitate Chevreul’s salt [Cu2SO3 CuSO3 2H2O] using ammonium sulfide [(NH4)2SO3] solutions at various concentrations from synthetic aqueous copper(II) sulfate [CuSO4] solutions. Reaction temperature, concentration of HCl, stirring speed and solid/liquid ratio were selected as parameters. The experimental results were successfully correlated by linear regression using Statistica Package Program. Dissolution curves were evaluated in order to test shrinking core models for solid–fluid systems. It was observed that increase in the reaction temperature and decrease in the solid/liquid ratio causes an increase the dissolution rate of Chevreul’s salt. The dissolution extent is highly increased with increase the concentration of HCl solutions in the experimental conditions. The activation energy was found to be as 57 kJ/mol. The leaching of Chevreul’s salt was controlled by diffusion through the ash or product layer.

Ultraviolet Induced Phase Gratings for WDM Add-Drop Filtering and Demultiplexing

Turan Erdogan 대한전자공학회 1998 대한전자공학회 학술대회 Vol.1998 No.1

Analysis of C-Reactive Protein and Biochemical Parameters in Pericardial Fluid

Turan Ege,Melih Hulusi US,Mustafa Cikirikcioglu,Cavidan Arar,Enver Duran 연세대학교의과대학 2006 Yonsei medical journal Vol.47 No.3

This study was designed to examine the relationship between pericardial fluid and plasma CRP levels, and to alterations in other biochemical parameters in patients undergoing Coronary Artery Bypass Grafting (CABG). The study group consisted of 96 Coronary Artery Disease (CAD) patients who were referred to our clinic for a CABG procedure and from whom sufficient amount of pericardial fluid could be collected. The patients were classified into 3 groups: Stable Angina Pectoris (SAP) (n=27), Unstable Angina Pectoris (USAP) (n=36), and Post-Myocardial Infarction (PMI) (n=33). Levels of CRP, glucose, albumin, total protein, Creatine Kinase (CK), Creatine Kinase-MB (CK- MB), and Lactate Dehydrogenase (LDH) were determined in pericardial fluid samples and in simultaneously collected blood samples from radial artery. The pericardial CRP and LDH levels in the PMI group were higher than in the SAP (p=0.015 and p=0.000, respectively) and USAP (p=0.011, p=0.047) groups. Serum CRP levels in USAP (p=0.014) and PMI (p= 0.000) groups were higher than those in the SAP group. Pericardial albumin levels in the PMI group were higher than in the USAP group (p=0.038). In all groups, the pericardial fluid/serum protein ratio was > 0.5, the LDL ratio was >0.6, and pericardial fluid LDH concentrations were >300mg/dl. CRP level of pericardial fluid was significantly higher in the PMI group than in other groups. However, pericardial fluid LDH levels were higher than blood LDH levels in this group and were also higher than pericardial fluid LDH levels of other groups.

Accuracy of Frozen Sections for Intraoperative Diagnosis of Complex Atypical Endometrial Hyperplasia

Turan, Taner,Karadag, Burak,Karabuk, Emine,Tulunay, Gokhan,Ozgul, Nejat,Gultekin, Murat,Boran, Nurettin,Isikdogan, Zuhal,Kose, Mehmet Faruk Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.5

Objective: The purpose of this study was to correlate the histological diagnosis made during intraoperative frozen section (FS) examination of hysterectomy samples with complex atypical endometrial hyperplasia (CAEH) diagnosed with definitive paraffin block histology. Methods: FS pathology results of 125 patients with a preoperative biopsy showing CAEH were compared retrospectively with paraffin block pathology findings. Results: Paraffin block results were consistent with FS in 78 of 125 patients (62.4%). The FS sensitivity and specificity of detecting cancer were 81.1% and 97.9%, with negative and positive predictive values of 76.7%, and 98.4%, respectively. Paraffin block results were reported as endometrial cancer in 77 of 125 (61.6%) patients. Final pathology was endometrial cancer in 45.3% patients diagnosed at our center and 76.9% for patients who had their diagnosis at other clinics (p=0.018). Paraffin block results were consistent with FS in 62.4% of all cases Consistence was 98.4% in patients who had endometrial cancer in FS. Conclusion: FS does not exclude the possibility of endometrial cancer in patients with the preoperative diagnosis of CAEH. In addition, sufficient endometrial sampling is important for an accurate diagnosis.

Atypical β-Catenin Activated Child Hepatocellular Tumor

Turan, Aynur,Unlu, Havva Akmaz,Karakus, Esra,Erdem, Arzu Yazal,Yakut, Zeynep Ilerisoy The Korean Society of Pediatric Gastroenterology 2015 Pediatric gastroenterology, hepatology & nutrition Vol.18 No.2

Hepatocellular adenomas are a benign, focal, hepatic neoplasm that have been divided into four subtypes according to the genetic and pathological features. The ${\beta}$-catenin activated subtype accounts for 10-15% of all hepatocellular adenomas and specific magnetic resonance imaging features have been defined for different hepatocellular adenomas subtypes. The current study aimed to report the magnetic resonance imaging features of a well differentiated hepatocellular carcinoma that developed on the basis of ${\beta}$-catenin activated hepatocellular adenomas in a child. In this case, atypical diffuse steatosis was determined in the lesion. In the literature, diffuse steatosis, which is defined as a feature of the hepatocyte nuclear factor-$1{\alpha}$-inactivated hepatocellular adenomas subtype, has not been previously reported in any ${\beta}$-catenin activated hepatocellular adenomas case. Interlacing magnetic resonance imaging findings between subtypes show that there are still many mysteries about this topic and larger studies are warranted.

Ultraviolet Induced Phase Gratings for WDM Add-Drop Filtering and Demultiplexing

Turan Erdogan 한국통신학회 1998 광전자공학회 학술회의 Vol.5 No.1

Comparison of Spectrophotometric, HPLC and Chemilumines­cence Methods for 3-Nitrotyrosine and Peroxynitrite Interaction

Turan Nilufer Nermin,Ark Mustafa,Demiryurek Abdullah Tuncay The Pharmaceutical Society of Korea 2005 Archives of Pharmacal Research Vol.28 No.3

We have studied the interaction of 3-nitrotyrosine with peroxynitrite using three different methods; chemiluminescence, spectrophotometry and HPLC. Peroxynitrite-induced luminol or lucigenin chemiluminescence were significantly decreased by 3-nitrotyrosine, in concentration­dependent manners. The intensity of the peroxynitrite spectrum was also markedly reduced in the presence of 3-nitrotyrosine in the spectrophometric assay. However, there was no attenuation of the 3-nitrotyrosine signal in the HPLC assay after mixing with peroxynitrite. The interaction of 3-nitrotyrosine and hypochlorous acid (HOCI) was also studied via the chemilumines-cence assay, where the HOCI-induced responses were markedly inhibited by 3-nitrotyrosine. These results suggest that caution should be taken when studying the levels or interactions of 3-nitrotyrosine.

METHODOLOGICAL VARIATIONS IN TEXTBOOKS OF TURKISH GRAMMAR AND SYNTAX USED IN TURKISH UNIVERSITIES

TURAN, FIKRET Academia Via Serica 2018 Acta Via Serica Vol.3 No.1

Textbooks of Turkish grammar and syntax that are commonly used in Turkish universities demonstrate certain differences of approach, interpretation and terminology of syntax. In this article, I analyze the syntactic approaches that are implemented in the grammar works of Muharrem Ergin, Tahsin $Banguo{\breve{g}}lu$ and Tahir Nejat Gencan, and in the syntax works of Leyla Karahan, Mustafa ${\ddot{O}}zkan$ & Veysi Sevinçli and H. ${\dot{I}}brahim$ Delice as the most commonly used textbooks, and determine resemblances and variations of syntactic approaches between them. It is concluded that, among others, the most prominent differences between these works concern the constructions of the non-finite subordination, the ki-subordination and compound sentences.

Radiation Exposure to Premature Infants in a Neonatal Intensive Care Unit in Turkey

Turan Olgar,Esra Onal,Dogan Bor,Nurullah Okumus,Yildiz Atalay,Canan Turkyilmaz,Ebru Ergenekon,Esin Koc 대한영상의학회 2008 Korean Journal of Radiology Vol.9 No.5

Objective: The aim of this work was to determine the radiation dose received by infants from radiographic exposure and the contribution from scatter radiation due to radiographic exposure of other infants in the same room. Materials and Methods: We retrospectively evaluated the entrance skin doses (ESDs) and effective doses of 23 infants with a gestational age as low as 28 weeks. ESDs were determined from tube output measurements (ESDTO) (n = 23) and from the use of thermoluminescent dosimetry (ESDTLD) (n = 16). Scattered radiation was evaluated using a 5 cm Perspex phantom. Effective doses were estimated from ESDTO by Monte Carlo computed software and radiation risks were estimated from the effective dose. ESDTO and ESDTLD were correlated using linear regression analysis. Results: The mean ESDTO for the chest and abdomen were 67 μGy and 65 μGy per procedure, respectively. The mean ESDTLD per radiograph was 70 μGy. The measured scattered radiation range at a 2 m distance from the neonatal intensive care unit (NICU) was (11-17 μGy) per radiograph. Mean effective doses were 16 and 27 μSv per procedure for the chest and abdomen, respectively. ESDTLD was well correlated with ESDTO obtained from the total chest and abdomen radiographs for each infant (R2 = 0.86). The radiation risks for childhood cancer estimated from the effective dose were 0.4 × 10-6 to 2 × 10-6 and 0.6 × 10-6 to 2.9 × 10-6 for chest and abdomen radiographs, respectively. Conclusion: The results of our study show that neonates received acceptable doses from common radiological examinations. Although the contribution of scatter radiation to the neonatal dose is low, considering the sensitivity of the neonates to radiation, further protective action was performed by increasing the distance of the infants from each other. Objective: The aim of this work was to determine the radiation dose received by infants from radiographic exposure and the contribution from scatter radiation due to radiographic exposure of other infants in the same room. Materials and Methods: We retrospectively evaluated the entrance skin doses (ESDs) and effective doses of 23 infants with a gestational age as low as 28 weeks. ESDs were determined from tube output measurements (ESDTO) (n = 23) and from the use of thermoluminescent dosimetry (ESDTLD) (n = 16). Scattered radiation was evaluated using a 5 cm Perspex phantom. Effective doses were estimated from ESDTO by Monte Carlo computed software and radiation risks were estimated from the effective dose. ESDTO and ESDTLD were correlated using linear regression analysis. Results: The mean ESDTO for the chest and abdomen were 67 μGy and 65 μGy per procedure, respectively. The mean ESDTLD per radiograph was 70 μGy. The measured scattered radiation range at a 2 m distance from the neonatal intensive care unit (NICU) was (11-17 μGy) per radiograph. Mean effective doses were 16 and 27 μSv per procedure for the chest and abdomen, respectively. ESDTLD was well correlated with ESDTO obtained from the total chest and abdomen radiographs for each infant (R2 = 0.86). The radiation risks for childhood cancer estimated from the effective dose were 0.4 × 10-6 to 2 × 10-6 and 0.6 × 10-6 to 2.9 × 10-6 for chest and abdomen radiographs, respectively. Conclusion: The results of our study show that neonates received acceptable doses from common radiological examinations. Although the contribution of scatter radiation to the neonatal dose is low, considering the sensitivity of the neonates to radiation, further protective action was performed by increasing the distance of the infants from each other.