112 research outputs found
The great leader of Turkish surgery is 90 years old
No full textBASKAN, MAZHAR SEMIH/0000-0002-3848-7745[No Abstract Available
Surface-charge effects on the electro-orientation of insulating boron-nitride nanotubes in aqueous suspension
No full textThe alignment of hexagonal boron-nitride nanotubes (BNNTs) in aqueous KCl solutions under spatially uniform electric fields was examined experimentally, using direct optical visualization to probe the orientation dynamics of individual BNNTs for different electric-field frequencies. Different from most previously studied nanowires and nanotubes, BNNTs are wide-bandgap materials which are essentially insulating at room temperature. We analyze the electro-orientation of BNNTs in the general context of polarizable cylindrical particles in liquid suspensions, whose behavior can fall into different regimes, including alignment due to Maxwell-Wagner induced dipoles at high frequencies, and alignment due to fluid motion of the electrical double layer around the particles at lower frequencies. For BNNTs, the variation of the crossover frequencies in the electro-orientation spectra was studied in electrolytes of different conductivity. The effect of BNNT surface charge on electro-orientation was further studied by changing the pH of the aqueous solution. We find that the electric-field alignment of the BNNTs in the low-frequency regime is associated with the charging and motion of the electrical double layer around the particle. However, as BNNTs are non-conducting particles, the reasons for the formation of the electrical double layer are likely to be different than that of conducting particles. We discuss two possible mechanisms for the double-layer formation and alignment of 1D dielectric particles, and make comparison to those for the more commonly studied conducting particles.Peer reviewe
Author lexicography and a theoretical evaluation on author dictionaries prepared in Turkey
No full textBatı literatüründe "author lexicography" ve "writer lexicography" ve Rus sözlükçülük geleneğinde "pisatel'skaya leksikografiya" ve "avtorskaya leksikografiya" adlandırmalarıyla karşılanan yazar sözlükleri hem dünyada hem de Türkiye'de birçok örneği olan genel sözlük tipolojisinde bir alt tür olarak yer alan sözlük türüdür. Genel sözlük tanımlarından ve uygulamalarından farklı olarak "yazar sözlükleri"yle ilgili birbirinden farklı özellikte uygulama örneklerinin yaygınlaşması bu uygulama alanıyla ilgili teorik çalışmalara da bir ihtiyaç olduğu gerçeğini ortaya koymuştur. İşte bu ihtiyacı karşılamak amacıyla yazar sözlüklerinin tarihi, amaçları, yöntemleri, makro ve mikro yapısı, tipolojisi gibi konular üzerine Türkiye dışında birçok çalışma yapılmış, teoriler, yöntemler belirlenmeye çalışılmıştır. Türkiye'de de birçok yazar sözlüğü örneği bulunmakla birlikte hem adlandırmayla ilgili birtakım karışıklıkların hem de uygulamada birtakım sorunların olduğu görülmektedir. Türkiye'deki yazar sözlüğü uygulamalarıyla ilgili bu belirsizliğe sebep olarak da yazar sözlüğünü oluşturan bileşenlerin belli bir parametreye sahip olmaması görülmektedir. Bu tez çalışmasında öncelikle Türkiye dışındaki yazar sözlüğüyle ilgili teorik çalışmalar incelenmiş, ardından hem Batı'daki yazar sözlüğü örnekleri hem de Türkiye'deki uygulamalar incelenerek yazar sözlüklerinin mega, makro ve mikro yapıları oluşturulmaya çalışılmıştır.
Author dictionaries, which called "author lexicography" and "writer lexicography" in Western literature and "pisatel'skaya lexicographyya" and "avtorskaya lexicography" in the Russian lexicography tradition, are a type of dictionary that is included as a subgenre in general dictionary typology, which has many examples both in the world and in Turkey. Unlike general dictionary definitions and applications, the spread of application examples with distinctive characteristics related to "author dictionaries" has revealed the fact that there is a need for theoretical studies related to this field of application. To meet this need, many studies have been carried out outside Turkey on topics such as the history, purposes, methods, macro and microstructure, typology of author dictionaries, and theories and methods have been tried to be determined. Although there are many examples of authors' dictionaries in Turkey, it is seen that there are some confusions about naming and some problems in practice. The reason for this uncertainty about the author dictionary practices in Turkey is that the components that make up the author dictionary do not have a certain parameter. In this thesis study, firstly, theoretical studies related to the author dictionary outside Turkey were examined, then both the examples of author dictionaries in the West and the practices in Turkey were examined to create mega, macro and microstructures of author dictionaries
To what extent may the unfavorable viewpoints of critics on E. A. Poe's use of horror and social satire in his stories be refuted by examples from and analysis of the author's eight short stories?
No full textWith numerous short stories and poems, Edgar Allan Poe is considered to be the piquant and
astounding milestone of the American Literature. Yet, his style and achievements have always
been interpreted antagonistically by large numbers of critics. This study analyzes the features
unique to Edgar Allan Poe in his short stories “Murders In The Rue Morgue”, “The Fall of
The House of Usher”, “A Tale of Jerusalem”, “The Pit and The Pendulum”, “The System of
Doctor Tarr and Professor Fether”, “A Cask Of Amonillado”, “The Masque of Red Death”
and “The Man That Was Used Up” while refuting to chosen examples of negative reviews
about Edgar Allan Poe.
Due to the fact that Edgar Allan Poe is well-known for his usage horror, satire, humor and
fiction in his short stories, these qualities have been criticized mostly by many writers and
philosophers as well. In this sense, the scope of the study will be sharpened on how these
techniques are used in his short stories to make them nonpareil and what was Edgar Allan
Poe’s authorial intention while utilizing these attributes in his works. At this point the analysis
of the characters, themes and plot will be prioritized compared to the language and style that
Edgar Allan Poe uses in his texts.
Since the criticism against Poe focus on the usefulness of such features in his short stories and
how they intimidate the reader from the text, the study proves that the gap between Poe and
the reader is a simple issue of reciprocal misunderstanding which is proven to be artificial and
bogus with examples and facts from his short stories
Cigarette Smoking and the Effect of Dexmedetomidine and Fentanyl on Tracheal Intubation
No full textSummaryGulsoy K, Deren S, Baskan S, Ornek D, Dikmen B – Cigarette Smoking and the Effect of Dexmedetomidine and Fentanyl on TrachealIntubation.Background and objectivesTo compare the effect of dexmedetomidine and fentanyl on hemodynamic changes in chronic male smokers.MethodsThis is a prospective, randomized, blinded study. Were selected 60 chronic male smokers (aged 16 to 60 years). The patients were randomly divided into two groups: Group D (n=30) received 1μg.kg-1 dexmedetomidine and Group F (n=30) received 3μg.kg-1 fentanyl in 150mL of normal saline, beginning 10 minutes before anesthesia induction. Before intubation, the heart rate and blood pressure of patients were measured. After anesthesia induction for endotracheal intubation, heart rate and blood pressure values were measured at 1, 3, and 5 minutes after intubation.ResultsHeart rate was low in Group D before anesthesia induction, intubation, and at the 1st and 3rd minutes after intubation. Systolic arterial pressure was low in Group F before intubation. Although diastolic arterial pressure was lower before anesthesia induction and at 5 minutes after intubation in both groups, it was already low in Group F before intubation. Whereas the mean arterial pressure was low in Group D before anesthesia induction, it was low in Group F before intubation. The values for rate-pressure product were low in Group D before induction and at 1 and 3 minutes after intubation.ConclusionsDexmedetomidine, which was applied via infusion at a loading dose of 1μg.kg-1 10 minutes before anesthesia induction in chronic male smokers, better suppressed increases in heart rate and rate-pressure product at 1 and 3 minutes after intubation compared to the group receiving 3μg.kg-1 fentanyl
The comparison of public and private primary schools children physical fitness
No full textTo study the effect of differences between public and private primary schools sharing a common curriculum. Between the ages of 7 and 11, educated in public and private primary schools were included in this study. Girls and boys participating in physical education classes were evaluated on right-left hand grip and leg strength using a dynamometer; on flexibility, using sit-and-reach flexibility test; on balance, using flamingo balance test and on coordination, hand-eye coordination test. The results of the effect of physical education on physical fitness of children displayed statistically significant differences only in leg strength
Ausländische Wissenschaftler in den Gründungsjahren der Universität Ankara 2014 Deutsch-Türkisches Wissenschaftsjahr ; Eröffnungsveranstaltung, Eröffnungsreden
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