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Your search keyword '"ÇETİNKAYA, HALİL"' showing total 10 results
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9. Long-Term Orbital Period Behaviour of Low Mass Ratio Contact Binaries GR Vir And FP Boo.

Author

Çetinkaya, Halil and Soydugan, Faruk

Subjects
*BINARY star orbits, *COSMIC magnetic fields, *MASS transfer, *ASTRONOMICAL mathematics, *ASTROPHYSICS
Abstract

In this study, we investigated orbital period variations of two low mass ratio contact binaries GR Vir and FP Boo based on published minima times. From the O-C analysis, it was found that FP Boo indicates orbital period decrease while the period of GR Vir is increasing. Mass transfer process was used to explain increase and decrease in the orbital periods. In the O-C diagrams of both systems periodic variations also exist. Cyclic changes can be explained as being the result of a light-travel time effect via a third component around the eclipsing binaries. In order to interpret of cyclic orbital period changes for GR Vir, which has late-type components, possible magnetic activity cycles of the components have been also considered. [ABSTRACT FROM AUTHOR]

Published
2017
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10. Treatment-refractory paraneoplastic opsoclonus–myoclonus syndrome in a patient with small-cell carcinoma of the lung.

Author

Alkan, Ali, Cenikli, Utku, Uylaş, Selçuk, Yılmaz, Mehmet, Çakır, Tümay, Çetinkaya, Halil, Kıran, Alkan, and Tanrıverdi, Özgür

Subjects
DRUG resistance, LUNG tumors, RARE diseases, SMALL cell carcinoma, OPSOCLONUS-Myoclonus syndrome, DISEASE complications
Abstract

Opsoclonus–myoclonus syndrome is a rare disease and traditionally described as "dancing eyes, dancing feet syndrome." It is characterized by opsoclonus (oscillations of the eyes in either horizontally or vertically) and myoclonus (spontaneous jerky movements of the limbs and trunk). There are numerous etiological factors defined such as paraneoplastic, para-infectious, toxic-metabolic, and idiopathic causes. The experience of opsoclonus–myoclonus syndrome in adults is very limited. Here, we present a case of treatment-refractory paraneoplastic opsoclonus–myoclonus syndrome associated with small-cell carcinoma of the lung. [ABSTRACT FROM AUTHOR]

Published
2020
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