Determination of the perceptions of sports managers about sport concept: A metaphor analysis study

The aim of this research is to determine the perceptions of sport managers in Turkey on the concept of sport by means of metaphors. 74 sport managers participated in the research. Phenomenology, one of the qualitative research methods, was used in the research. Content analysis method was used for the data analysis. Evaluation of the data showed that sports managers produced a total of 50 metaphors. These metaphors produced were collected in 6 different categories. As a result, it was determined that sport managers expressed the concept of sport by means of metaphors in a very rich and diverse perspective. Therefore, the metaphors determined in this study may lead the sport managers and candidates responsible for the administration of sports services and activities in terms of offering a different perspective on the practice of sport management. © 2018, Sciedu Press. All rights reserved

Integral Inequalities of Hermite-Hadamard Type Via Green Function and Applications

In this study, we establish some Hermite- Hadamard type inequalities for functions whose second derivatives absolute value are convex. In accordance with this purpose, we obtain an identity using Green\u27s function. Then using this equality we get our main results

Some quality characteristics of selected durum wheat (Triticum durum) landraces

Durum wheat (Triticum durum) is primarily used for the production of high-quality pasta products because of its certain superior characteristics. Wheat landraces are locally adapted diverse populations evolved through natural selection and are invaluable genetic resources for breeding programs. The search for new genetic resources all around the world has been underway to develop high-quality durum wheats. The purpose of this study was therefore to determine the pasta quality-associated characteristics of 12 durum wheat landraces (Bağacak, Beyaziye, İskenderiye, Sorgül, Karakılçık, Beyaz Buğday, Ağ Buğdayı, Bintepe, Havrani, Çalıbasan, Hacı Halil, and Akçakale) compared to 2 wellestablished high-quality durum wheat cultivars, Kyle and Zenit. Protein content and quality, pigment content, activities of oxidative enzymes (lipoxygenase, polyphenol oxidase, and peroxidase), kernel size, and endosperm vitreousness were measured as the major quality parameters. The landraces had significant differences (P < 0.05) in their quality characteristics. Of the landraces, Akçakale, Havrani, and Çalıbasan were found to be quite promising for the processing of so-called al dente cooking pasta products, as judged by their elevated protein quantity and gluten quality. With respect to pigment content and oxidative enzymes that are central to the bright yellow color of pasta products, however, the landraces Havrani, Hacı Halil, and Sorgül were found to have great potential. In brief, several landraces have potential for high-quality pasta processing, while a few others can be used for breeding purposes

Photoinduced electron transfer mechanism between green fluorescent protein molecules and metal oxide nanoparticles

Green fluorescent protein (GFP) molecules are attached to titanium dioxide and cadmium oxide nanoparticles via sol-gel method and fluorescence dynamics of such a protein-metal oxide assembly is investigated with a conventional time correlated single photon counting technique. As compared to free fluorescent protein molecules, time-resolved experiments show that the fluorescence lifetime of GFP molecules bound to these metal oxide nanoparticles gets shortened dramatically. Such a decrease in the lifetime is measured to be 22 and 43 percent for cadmium oxide and titanium dioxide respectively, which is due to photoinduced electron transfer mechanism caused by the interaction of GFP molecules (donor) and metal oxide nanoparticles (acceptor). Our results yield electron transferrates of 3.139 x 108 sand 1.182 x 108 s_ 1 from the GFP molecules to titanium dioxide and cadmium oxide nanoparticles, respectively. The electron transfer rates show a marked decrease with increasing driving force energy. This effect represents a clear example of the Marcus inverted region electron transfer process

Evaluation of Six Patients with Pulmonary Carcinosarcoma with a Literature Review

Background. Carcinosarcoma of the lung is a rare malignant neoplasm. We evaluated the diagnosis and treatment of six carcinosarcoma cases, including a synchronous tumour and a solitary pulmonary tumour, along with the clinical and histological features and survival times. Methods. From a retrospective analysis of 1076 non-small-cell lung cancer resections performed between January 1996 and January 2011, six patients (0.5%) with pulmonary carcinosarcoma (all males; mean age 58 years; range 53–66) who underwent surgical treatment were studied. Results. The mean tumour pathological T diameter was 7.2 cm (median 6 cm, range 3–14.5 cm). Only one patient was diagnosed with carcinosarcoma preoperatively. The clinical presentation and tumour localisations differed. The operations performed were a lobectomy (n=4), pneumonectomy (n=1), and bilobectomy (n=1). Histologically, the epithelial characteristics of the tumours were consistent with squamous cell carcinoma in most of the patients. A complete resection was performed in all six patients. No mortality occurred in the early postoperative period. The median survival time was 9 (3–25) months. Conclusion. The preoperative diagnosis of carcinosarcoma of the lung is difficult due to the composition of the different histopathological structures. Complete surgical resection is the treatment of choice for pulmonary carcinosarcoma, although further studies are needed

Optical and dielectric properties of double helix DNA thin films

WOS:000297400800001In this work, the thin film of wheat DNA was deposited by spin-coating technique onto glass substrate, and the optical and dielectric properties of the double helix DNA thin film were investigated. The optical constants such as refractive index, extinction coefficient, dielectric constant, dissipation factor, relaxation time, and optical conductivity were determined from the measured transmittance spectra in the wavelength range 190-1100 nm. Meanwhile, the dispersion behavior of the refractive index was studied in terms of the single oscillator Wemple-DiDomenico (W-D) model, and the physical parameters of the average oscillator strength, average oscillator wavelength, average oscillator energy, the refractive index dispersion parameter and the dispersion energy were achieved. Furthermore, the optical band gap values were calculated by W-D model and Tauc model, respectively, and the values obtained from W-D model are in agreement with those determined from the Tauc model. The analysis of the optical absorption data indicates that the optical band gap E-g was indirect transitions. These results provide some useful references for the potential application of the DNA thin films in fiber optic, solar cell and optoelectronic devices. (C) 2011 Elsevier B.V. All rights reserved

Yüksek performanslı otomatik mod eşlenmiş dönüölçer.

This thesis, for the first time in the literature, presents an automatic mode-matching system that uses the phase relationships between the residual quadrature and drive signals in a gyroscope to achieve and maintain the frequency matching condition, and also the system allows controlling the system bandwidth by adjusting the closed loop parameters of the sense mode controller, independently from the mechanical sensor bandwidth. There are two mode-matching methods, using the proposed mode-matching system, presented in this thesis. In the first method, the frequency matching between the resonance modes of the gyroscope is automatically accomplished by changing the proof mass potential. The main motivation behind the first method is to tune the sense mode resonance frequency with respect to the drive mode resonance frequency using the electrostatic tuning capability of the sense mode. In the second method, the mode-matched gyroscope operation is accomplished by using dedicated frequency tuning electrodes that only provides a capability of tuning the sense mode resonance frequency generating an electrostatic spring effect on the sense frame, independently from the proof mass potential. This study mainly focuses on the second method because the proof mass potential variation is not desired during the gyroscope operation since the proof mass potential directly affects the drive and sense mode dynamics of the gyroscope. Therefore, a single-mass fully-decoupled gyroscope including the dedicated frequency tuning electrodes are designed. To identify mode shapes and mode frequencies of the designed gyroscope, FEM simulations are performed. The designed gyroscopes are fabricated using SOI-based SOG process. The fabrication imperfections are clarified during the formation of the structural layer of the gyroscope. Next, the closed loop controllers are designed for the drive amplitude control, sense force-feedback, quadrature cancellation, and mode-matching regarding the phase relationship between the quadrature and drive signals. Mode-matching is achieved by using a closed loop controller that provides a DC tuning potential. The mode-matching system consisting of vacuum packaged sensor, drive amplitude control, sense force-feedback, quadrature cancellation, and mode-matching modules is implemented on a printed circuit board (PCB), and then the system level tests are performed. Tests illustrate that the mode-matching system operates in a desired manner. Test results demonstrate that the performances of the studied MEMS gyroscopes are improved up to 2.6 times in bias instability and 2 times in ARW under the mode-matched condition compared to the mismatched (~200 Hz) condition, reaching down to 0.73 °/hr and 0.024 °/√hr, respectively. At the mode-matched gyroscope operation, the better performance is obtained to be bias instability of 0.87 ⁰/hr and ARW of 0.014 °/√hr, close to a theoretical mechanical Brownian noise limit of 0.013 °/√hr, under 10 mTorr vacuum ambient condition. The system bandwidth is adjusted and measured to be greater than 50 Hz. The mode-matched gyroscope has a linearity of 99.99% in a dynamic range of ±90 °/sec. The dynamic range can be increased above that level without sacrificing linearity. To conclude, the proposed mode-matching system improves the performance of the gyroscope up to a mechanical Brownian noise limit by substantially suppressing the electronic noise of the sense mode controller and achieves sub-degree per hour performance without sacrificing system bandwidth and linearity.M.S. - Master of Scienc