Plane sextics with a type E7 singular point

Ankara : The Department of Mathematics and the Institute of Engineering and Science of Bilkent University, 2011.Thesis (Master's) -- Bilkent University, 2011.Includes bibliographical references leaves 30-31.The computation of the fundamental grup of a plane sextic (i.e., curves B ⊂ P 2 ) still remain unanswered problem. There is an huge effort on this subject. In this thesis, we study plane sextic curves with a type E7 singular point, try to state a geometric approach to compute the fundamental groups of plane sextics with that type of singular points and develop a trick to find the commutant of these groups.Aktaş, Mehmet EminM.S

The ıdeas of the teachers about the dırectors who work at nursery schools, prımary schools, secondary schools and hıgh schools (Denizli Sarayköy example)

Bu çalışmada anaokulu, ilkokul, ortaokul ve ortaöğretim okullarında görev yapan öğretmenlerin yöneticilere bakışları (Denizli Sarayköy Örneği) ve bu bakışlarının farklı değişkenlere göre ilişkisi incelenmiştir. Araştırmada “tarama modeli” kullanılmıştır. Araştırmanın evreni 2014–2015 eğitim-öğretim yılı Denizli ili Sarayköy ilçesinde görev yapan 415 öğretmenden oluşmaktadır. “Rastgele örnekleme” yöntemiyle seçilen 180 öğretmene ulaşılarak anket sorularının tamamına cevap veren 136 öğretmenden veriler toplanmıştır. Araştırmada kullanılan veri toplama aracı; “Kişisel Bilgiler” ve “Yönetici Davranışları Formu” olmak üzere iki bölümden oluşmaktadır. Araştırmaya katılan öğretmenlerin % 55,1’inin kadın; % 44,9’unun erkek olduğu görülmektedir. Buna göre katılımcıların büyük kısmının kadın olduğu, araştırmaya katılan öğretmenlerden en fazla katılımcının 70 katılımcı ile ( % 51,5 ) 30-39 yaş aralığında olduğu ve bunu 36 katılımcı ile ( % 26,5) 20-29 yaş aralığında olanların takip ettiği görülürken en az katılımcının ise 7 katılımcı ile (% 5,1 ) 50-59 yaş aralığında olduğu görülmüştür. Katılımcı öğretmenlerin büyük çoğunluğunun orta yaşlarda olduğu, araştırmaya katılan öğretmenlerden en fazla katılımcı olarak 122 katılımcının (% 89,7) lisans mezunu olduğu ve bunu 12 tane ile (% 8,8) lisansüstü düzeyde eğitim aldığı en az katılımcının ise 2 kişi ile ( % 1,5) önlisans düzeyinde eğitim mezunu olduğu görülmektedir. Böylelikle katılımcı öğretmenlerin büyük kısmının lisans mezunu olduğu ve genel olarak eğitim düzeyinin yüksek olduğu, araştırmaya katılan öğretmenlerden en fazla katılımcının 51 katılımcı ile ( % 26,5 ) 6-10 yıl aralığında mesleki kıdeminin olduğu ve bunu 33 katılımcı ile ( % 24,3) 0-5 yıl aralığında mesleki kıdemi olanların takip ettiği görülürken en az katılımcının ise 5 katılımcı ile (% 3,7 ) 26 yıl ve üzeri mesleki kıdemi olanların olduğu görülmüştür. Katılımcı öğretmenlerin büyük çoğunluğunun 0-10 yıl aralığında mesleki kıdemi olduğu, araştırmaya katılan öğretmenlerden 115 katılımcının (% 84,6) evli, 21 katılımcının (% 15,4) bekâr olduğu, araştırmaya katılan öğretmenlerden en fazla katılımcı olarak 49 katılımcının (% 36,0) ilkokullarda çalıştığı, 39’ar katılımcının (% 28,7) ortaokul ve liselerde çalışmakta olduğu görülürken 9 katılımcının (% 6,6) anaokullarında çalışmakta olduğu görülmüştür. Yapılan inceleme ve analiz sonucunda Öğretmenlerin Yönetici Davranışları Ölçeğinde en az katılım gösterdikleri önermenin “ Karizmatik olma ” göstergesine “Çoğu zaman” şeklinde görüş bildirdikleri görülürken en fazla katılım gösterdikleri önermenin ise “ Güvenilir olma ” göstergesine “ Her Zaman ” derecesinde olduğu görülmüştür. Anaokulu, ilkokul, ortaokul ve ortaöğretim okullarında görev yapan öğretmenlerin yönetici algıları cinsiyet ve okul türü değişkeni arasında istatistiksel olarak 0,05 manidarlık düzeyinde anlamlı bir fark görülürken yaş, eğitim düzeyi, medeni durum, hizmet süresi değişkenleri arasında istatistiksel olarak 0,05 manidarlık düzeyinde anlamlı bir farklılık olmadığı tespit edilmiştir.At this research “ The ideas of the teachers about the directors who work at nursery schoools, primary schools, secondary schools and high schools (Denizli Sarayköy Example) and the relationship of this views have been examined according to different variables. “Survey model” was used in the research. The universe of the research consists of 415 teachers working in Sarayköy district of Denizli province in 2014-2015 academic year. 180 teachers selected by "random sampling" method were reached and data were collected from 136 teachers who answered the questionnaire completely. Data collection tool used in research; "Personal Information" and "Manager Behavior Form". 55.1% of the teachers participating in the survey were female; 44.9% are male. It was found that the majority of the participant teachers were female participants (70%), aged between 30-39 years (51.5%), followed by 36 participants (26.5%) who were between 20-29 years of age and less participants were in the age range of 50-59 with 7 participants (5.1%). The majority of the participating teachers were in the middle ages and that 122 participants (89.7%) had a bachelor's degree as the maximum number of participants participating in the survey, and 12 participants (8.8%) had at least 2 participants (% 1,5) associate degree education. Thus, it was found that the majority of participant teachers had undergraduate degrees and that the level of education in general was higher than that of the teachers participating in the survey, with 51 participants (26.5%) with professional attendance at 6-10 years and 33 participants (24.3% At the time of 0-5 years, it was seen that those with professional seniority followed, while the participants with at least 5 participants (3.7%) were found to have 26 years and above occupational seniority. Of the teachers participating in the survey, 115 participants (84.6%) were married and 21 participants (15.4%) were single. 0) were working in primary school and 39 participants (28.7%) were working in junior high school and high school, while 9 participants (6.6%) were working in nursery school. As a result of the analysis, it was seen that the Teachers' Minimum Attendance Scale indicated that they were participating in the "Most of the time" and the "Most Reliable" indicator was "Always". While there was a statistically significant difference between the gender and school type variables of the teachers working in nursery school, primary school, secondary school and high school, there was a statistically significant difference between the variables of age, education level, marital status and duration of service statistically at a level of 0,05 managements it has been determined that there is no difference

Impact and post impact behavior of layer fabric composites

In this study, the effect of impact and post impact behavior of E-glass/epoxy composite plates having different layer fabrics were investigated by considering energy profile diagram and the related load-deflection curves. Different impact energies (5. J-60. J)were subjected to the plates consisting of eight layers of plain weave (1D), double (2D) and triple (3D) layer fabrics. The impact tests were continued until complete perforation of layer fabrics. The damage modes and damage processes of layer fabrics under varied impact energies were also discussed. At the end of the impact tests, the damaged samples were mounted into a compression apparatus to determine the Compression After Impact (CAI) strength of layer fabric samples. The results of these impact and post impact tests showed that contact force occurring between the impactor and the composite specimen increased and the CAI strength reduced by increasing the impact energy. The objective of this study was to determine the perforation threshold of E-glass/epoxy composite plates having different layer fabrics as plain weave (1D), double (2D), and triple (3D) layer fabrics. © 2012 Elsevier Ltd.108M128 National Council for Scientific ResearchThis study was sponsored by The Scientific and Technological Research Council of Turkey (TUBITAK), (Project No: 108M128). Partial financial support by Pul-tech FRP, in Usak-Turkey, was also gratefully acknowledged

Comparison of Topical Treatment with Silver Sulfadiazine and Sweetgum Oil (Liquidambar orientalis) on Burn Wound Healing in an Experimental Rat Model

OBJECTIVE: To investigate effects of Sweetgum oil (SO) on wound healing in comparison with silver sulfadiazine (SS) in a burn wound model, which was experimentally created on rats. It was observed in the literature that no study had investigated the effects of SO on burn wounds. STUDY DESIGN: Seventy-two Sprague Dawley rats were divided into 3 main groups: Burn, Burn+SS, and Burn+SO (subgroups: 4, 8, and 12 days). RESULTS: In the histopathological examinations it was observed that parameters indicating wound-healing stages had increased in the Burn+SS and Burn+SO groups more than in the Burn group, whereas they were similar in the Burn+SS and Burn+SO groups. In the PCNA immunostaining, more rapid epidermal growth, more increased thickening in the cuticular layer, and more prominent wound healing were observed in the Burn+SS and Burn+SO groups than in the Burn group. While hydroxyproline levels in the Burn+SS and Burn+SO subgroups were similar on Days 8 and 12, it was observed that levels were increased in the burn subgroups. CONCLUSION: Topical use of SO on burn wound areas had favorable effects on healing, indicating that this agent could be used as an alternative treatment for burn wounds.Namik Kemal University Research Center, Tekirdag, TurkeyNamik Kemal University [NKUBAP.00.20.AR.14.10]Supported under Project NKUBAP.00.20.AR.14.10 by the Namik Kemal University Research Center, Tekirdag, Turkey

Trends of primary glomerular disease in Turkey from 2009 to 2017: A regional registry report from TSN-Gold working group

...ERA EDT

Mortality analysis of COVID-19 infection in chronic kidney disease, haemodialysis and renal transplant patients compared with patients without kidney disease: a nationwide analysis from Turkey

Background. Chronic kidney disease (CKD) and immunosuppression, such as in renal transplantation (RT), stand as one of the established potential risk factors for severe coronavirus disease 2019 (COVID-19). Case morbidity and mortality rates for any type of infection have always been much higher in CKD, haemodialysis (HD) and RT patients than in the general population. A large study comparing COVID-19 outcome in moderate to advanced CKD (Stages 3-5), HD and RT patients with a control group of patients is still lacking. Methods. We conducted a multicentre, retrospective, observational study, involving hospitalized adult patients with COVID-19 from 47 centres in Turkey. Patients with CKD Stages 3-5, chronic HD and RT were compared with patients who had COVID-19 but no kidney disease. Demographics, comorbidities, medications, laboratory tests, COVID-19 treatments and outcome [in-hospital mortality and combined in-hospital outcome mortality or admission to the intensive care unit (ICU)] were compared. Results. A total of 1210 patients were included [median age, 61 (quartile 1-quartile 3 48-71) years, female 551 (45.5%)] composed of four groups: Control (n = 450), HD (n = 390), RT (n = 81) and CKD (n = 289). The ICU admission rate was 266/ 1210 (22.0%). A total of 172/1210 (14.2%) patients died. The ICU admission and in-hospital mortality rates in the CKD group [114/289 (39.4%); 95% confidence interval (CI) 33.9-45.2; and 82/289 (28.4%); 95% CI 23.9-34.5)] were significantly higher than the other groups: HD = 99/390 (25.4%; 95% CI 21.3-29.9; P<0.001) and 63/390 (16.2%; 95% CI 13.0-20.4; P<0.001); RT = 17/81 (21.0%; 95% CI 13.2-30.8; P = 0.002) and 9/81 (11.1%; 95% CI 5.7-19.5; P = 0.001); and control = 36/450 (8.0%; 95% CI 5.8-10.8; P<0.001) and 18/450 (4%; 95% CI 2.5-6.2; P<0.001). Adjusted mortality and adjusted combined outcomes in CKD group and HD groups were significantly higher than the control group [hazard ratio (HR) (95% CI) CKD: 2.88 (1.52- 5.44); P = 0.001; 2.44 (1.35-4.40); P = 0.003; HD: 2.32 (1.21- 4.46); P = 0.011; 2.25 (1.23-4.12); P = 0.008), respectively], but these were not significantly different in the RT from in the control group [HR (95% CI) 1.89 (0.76-4.72); P = 0.169; 1.87 (0.81-4.28); P = 0.138, respectively]. Conclusions. Hospitalized COVID-19 patients with CKDs, including Stages 3-5 CKD, HD and RT, have significantly higher mortality than patients without kidney disease. Stages 3-5 CKD patients have an in-hospital mortality rate as much as HD patients, which may be in part because of similar age and comorbidity burden. We were unable to assess if RT patients were or were not at increased risk for in-hospital mortality because of the relatively small sample size of the RT patients in this study