The Tomb of Mahmut Şevket Pasha on His 100th Death Anniversary

Osmanlı Devleti’nin son dönemlerinde önemli memuriyetlerin ardından, kısa bir süre sadrazamlık yapmış olan Mahmut Şevket Paşa, bu görevde iken bir suikast sonucu şehit olmuştur. 31 Mart ayaklanmasının bastırılması ve meşrutiyetin yeniden ilanı gibi olaylarda önemli roller üstlenen Mahmut Şevket Paşa’nın türbesi de yine bu olayların sonucunda yaptırılan Abide-i Hürriyet Anıtı’nın hemen yanına inşa edilmiştir. Mimar Kemalettin tarafından tasarlanan bu türbe; plan, kuruluş ve süsleme özellikleri bakımından Ulusal Mimarlık Dönemi’nin bütün özelliklerini yansıtmaktadır. Türbenin mezar odası ve çift cidarlı kubbe uygulaması ise, kendini dönemindeki diğer türbelerden ayıran önemli özellikleridir

Group therapy in adults with obsessive-compulsive disorder: A review

In the treatment of OCD, several therapeutic approaches have been developed, including individual, group and/or pharmacological therapeutic methods. However, group therapy on OCD has received little research attention in comparison with other therapeutic methods and some studies demonstrated that OCD can be treated in group settings. In the literature, mentioned group therapies to treat OCD involve behavioral therapy, cognitive therapy, ERP (exposure and response prevention), cognitive behavioral therapy, ACT (acceptance and commitment therapy), supportive groups and individual therapy with family member involvement. In relation to their effectiveness, research indicated inconsistent findings. Therefore, the aim of this study was to address and to review whether group treatments on OCD are efficacious. This review focused on cognitive-behavioral group therapy (CBGT), ERP, and ACT

Design analysis and development of a high temperature actuator for gas turbine blade tip clearance control

During a typical startup cycle industrial gas turbine blades experience rapid radial thermal expansion while bulky shroud structure with larger thermal inertia requires much longer period to reach its operating temperature. Turbine designers have to leave a safe radial distance in order to prevent contact of blades to the surrounding annular casing. However, when thermal steady state in the turbine stage is achieved, shroud and casing grow and excessive amount of blade-shroud clearance remains. Engine efficiency is very sensitive to blade-shroud clearance. Just one millimeter of radial blade tip gap in fist stage turbine section of a 150 MW class engine leads to 4% efficiency drop due to blade tip leakage. To achieve better efficiency or higher power, turbine blade tip clearance has to be controlled. Attempts to address blade tip clearance problem were not applicable as designs were bulky and complex which required excessive modification on the turbine hardware and design. The goal of this study is to design, analyze and develop a low-cost and compact actuator system which is capable of controlling the tip clearance up to 0.25mm at elevated temperatures. Actuator will be positioned between inner and outer shrouds of the casing to force the inner shroud radially away from the blades during transients, and allow it to come back towards the blades when casing reaches operating temperature to decrease the tip leakage during steady state. Different actuator designs have been studied and finite element analysis solutions have been obtained for deflection and stress. Low cycle fatigue life of the actuator has been estimated via Coffin-Manson criterion. An experimental setup has been designed and fabricated to validate the simulation results. Furthermore, since actuator will be subjected to wear at elevated temperatures due to mechanical loading and vibrations in the gas turbine, friction and wear behavior of candidate actuator materials has to be investigated. High temperature scuffing combined with rapid oxidation can lead to failures and dramatic reductions service life. Therefore, another experimental setup has been developed to conduct friction and wear tests of the candidate actuator materials, i.e. Nickel and Cobalt based superalloys Haynes 25, 188 and 214. The tests have been conducted at 20, 200,400 and 540 °C. Overall, the results indicated that the compact actuator can achieve 0.25 mm tip clearance reduction leading to 1% efficiency increase for 880 startup cycles

School Principals\u27 Learnings From Covid-19 Pandemic

Covid-19 pandemic, which broke out in the late 2019 and we are still facing today, has made an enormous impact throughout the world and directly caused an extraordinary disruption of many systems globally including educational ones and affected the lives lots of students and families all over the world. Different kinds of measures were abruptly taken in order to ensure that students, teachers and school principals continued their educational processes safely and also to lessen the crisis situation and chaos. One of these measures was country-wide school closures and along with Turkey, most of the countries chose to close schools and make a quick transition to remote learning. During those weeks, several policy responses aimed at making sure that students attended online classes regularly and that they felt well. In the meantime, diverse stakeholders of educational systems (students, teachers, educational leaders etc.) have learned some lessons from this terrifying pandemic. The purpose of this study is to emphasize the learnings that Turkish school principals experienced during that school closure period in Turkey. Within the scope of maximum diversity sampling, one of the purposeful sampling methods, a sampling frame was established and 105 school principals working in primary, secondary and high schools in different provinces participated in the study. In the study, in which qualitative online survey method was used, a Google drive form with open-ended questions was exploited. Based on the findings obtained in the study, main themes have been created. These are personal, organizational and educational learnings

Lomber posterior transpediküler vida ile fiksasyon ve füzyon uygulamaları; 117 spinal instabilite olgusunda peroperatif olarak neler yapıyoruz?

Objective: In this study, we aimed to share our surgical principles and surgical outcomes in cases of fixation and fusion with lumbar posterior transpedicular screw-rod systems in our clinic. Methods: 117 patients who underwent posterolateral fusion surgery with lumbar posterior transpedicular screw-rod system between 2014 and 2017 were evaluated retrospectively. Dynamic lumbar radiographs, computed tomography and magnetic resonance imaging were performed in all cases before the operation. All patients were operated with microsurgical principles and internal fixation and posterolateral fusion were performed with posterior interpedicular screw-rod systems. Stabilization systems were evaluated with lumbar X-ray and/or computed tomography on the first postoperative day. In the 1st and 3rd months, lumbar X-rays were repeated. Results: All these patients, in whom lumbar spinal instability was detected clinically and radiologically, had low back and/or leg pain and different levels of neurological deficits. Of the cases, 23 were male and 94 were female. The mean age was 53.4 years. According to the Meyerding classification, there were grade I and II spondylolisthesis in 69, and 8 cases respectively, spinal stenosis in 28 cases, burst fracture in 1 case, compression fracture in 3 cases, disc herniation in 11 cases. The mean follow-up period was 28.6 months. Conclusions: Meticulous case selection, careful preoperative planning and adherence to spinal microsurgery principles will increase the success rate in lumbar posterior internal fixation and posterolateral fusion surgeries.Amaç: Bu çalışmada kliniğimizde lomber posterior transpediküler vida-rod sistemleri ile fiksasyon ve füzyon vakalarında cerrahi prensiplerimizi ve cerrahi sonuçlarımızı paylaşmayı amaçladık. Gereç ve Yöntem: 2014-2017 yılları arasında lomber posterior transpediküler vida-rod sistemi ile posterolateral füzyon cerrahisi uygulanan 117 hasta retrospektif olarak değerlendirildi. Operasyon öncesi tüm olgulara dinamik lomber radyografiler, bilgisayarlı tomografi ve manyetik rezonans görüntüleme yapıldı. Tüm hastalar mikrocerrahi prensipler ile opera edildiler ve posterior interpediküler vida-rod sistemleri ile internal fiksasyon ve posterolateral füzyon uygulandı. Postoperatif birinci gün lomber grafi ve/veya bilgisayarlı tomografi ile stabilizasyon sistemleri değerlendirildi. Postoperatif 1. ve 3. aylarda lomber grafiler tekrarlandı. Bulgular: Lomber spinal instabilitenin klinik ve radyolojik olarak tespit edildiği tüm bu hastalarda bel ve/veya bacak ağrısı ve farklı düzeylerde nörolojik defisitler vardı. Vakaların 23'ü erkek, 94'ü kadındı. Ortalama yaş 53.4 idi. Meyerding sınıflamasına göre sırasıyla 69 ve 8 olguda grade I ve II spondilolistezis, 28 olguda spinal stenoz, 1 olguda patlama kırığı, 3 olguda kompresyon kırığı, 11 olguda disk hernisi mevcuttu. Ortalama takip süresi 28.6 ay idi. Sonuç: Lomber posterior internal fiksasyon ve posterolateral füzyon ameliyatlarında titiz vaka seçimi, ameliyat öncesi dikkatli planlama ve spinal mikrocerrahi prensiplerine bağlılık başarı oranını artıracaktır

1,4-Diferrocenylbutane-1,4-dione

In the crystal structure of the title compound, [Fe2(C5H5)2(C14H12O2)], each carbonyl group is coplanar with the adjacent cyclo­penta­dienyl ring, thus maximizing the π-orbital overlap and electronic inter­actions between the groups. In the crystal structure, there are inter- and intra­molecular C—H⋯O contacts

The evaluation of pediatric forensic cases presented to emergency department

Introduction: Pediatric age group serves as a preparation stage for the rest of the life. This age group has specific psychological, physiological and social conditions. This present study examined pediatric forensic cases aged between 0–18. Obtained parameters determined characteristics of pediatric age group foren- sic cases.  Methods: 1624 pediatric forensic cases aged between 0–18 who were admitted to the emergency de- partment at a tertiary healthcare service between the dates 31 October 2014 and 31 October 2016 were evaluated retrospectively. The cases were evaluated in terms of age, gender, nationality, admission time and season, reasons for presentation, radiological imaging techniques, consultation, intervention, treatment ward, clinical outcome and application of cardiopulmonary resuscitation.  Results: Age average of the patients was 9,2 ± 6,2. Adolescent age group (49, 4%) was the most frequent- ly admitted after traumatization. 61% of the patients constituted male patients. An association between age and gender was not detected. The most frequent reasons for admissions were assault (28,7%) and drug intoxication (22,4%). Assault, drug intoxication, traffic accidents, substance intake, penetrating stab wounds, falling down from the height and animal bites were frequently seen in adolescents whereas sim- ple falling, corrosive substance ingestion and burn were highly seen in infants. Assault, penetrating stab wounds and gunshot injuries were detected to be frequent in males; drug and substance use was seen to be frequent in females. The patients (57%) were seen to be admitted to the emergency between the hours 1600–2400. 46.4% of the patients underwent radiological imaging. Trauma patients were seen to undergo radiological imaging more frequently. A consultation was required for 42.4% of the patients. The discharge rate of the patients from the emergency was 66.9%. Patients discharged from the emergency were seen to undergo radiography and computed tomography directly. This was found to be significantly high.  Conclusions: Pediatric forensic cases are seen in adolescence and school-age children more frequently. The most frequent forensic cases were assaults and intoxications. Forensic cases are more frequently seen in males. Assaults are more frequent in males whereas intoxications are more frequent in females. Most of theforensiccasesaredischargedfromtheemergencydepartment. Patientsdischargedfromtheemergency undergo radiological imaging at higher rates compared to the other patients. 

A strategy based on the dispersive liquid-liquid microextraction of cadmium in environmental samples prior to ıts determination by flame atomic absorption spectrometry

This work has been supported by the Scientific Research Projects of Karadeniz Technical University (Project no: 1223), Turkey.A simple method was developed by combining dispersive liquid-liquid microexraction (DLLME) and flame atomic absorption spectrometry (FAAS). For the pre-concentration of trace amounts of cadmium, a new complexation chelate of 2-[(4-phenylpiperazine-5-Thioxo- 4,5-dihydro-1 ,3,4-oxadiazole-2- yl)methyl]-5-methyl-4-[2-(1H-indol e-3-yl)ethyl]-2,4-dihydro-3H-1, 2,4-Triazole-3-one (PPTOMDT) was used and mixed with the solvents of chloroform and methanol. The mixture of the extraction solutions was then directly injected into an aqueous solution containing Cd2+ ions. After centrifugation, the settled phase was diluted with 500 mu L of ethanol/nitric acid and aspirated into the FAAS. The limit of detection (LOD) was found at 0.69 mu g L-1 under optimum conditions. The relative standard deviation (RSD) for 15 replicates at a 3.75 mu g L-1 Cd2+ concentration level was 3.21%. The calibration plot was linear within the range of 2.5-15 mu g L-1 of Cd2+. After the analytical characteristics were determined, the CRM-TMDW-500 Drinking Water and CRM-SA-C Sandy Soil C, both certified reference materials, were analyzed in order to validate the method. The application of the DLLME method has been successfully tested for the determination of cadmium in solid and liquid samples. The recoveries of the spiked sample ranged between 92-96%