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Search Results: 1 - 10 of 354 matches for " Bahar Keles "
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Juvenile Ossifying Fibroma of the Mandible: a Case Report
Bahar Keles,Mutlu Duran,Yavuz Uyarhttp://www.doaj.org/restricted,Ahmet Azimov
Journal of Oral & Maxillofacial Research , 2010,
Abstract: Background: Fibro-osseous lesions of the jaws, including juvenile ossifying fibroma, pose diagnostic and therapeutic difficulties due to their clinical, radiological and histological variability. The aim of this study was to report the outcome of a 9 years old girl with diagnosed juvenile ossifying fibroma treatment.Methods: A 9 years old girl presented with a 6 x 8 cm sized hard fixed tumour on right ramus and corpus of the mandible. On the radiological examination tumour showed an irregular but well bordered, unilocular and expansive lesion on the right corpus and ramus of the mandible. There was no teeth displacement or teeth root resorbtion. Microscopically, the tumour had trabeculae, fibrillary osteoid and woven bone. After the clinical, radiological (panoramic radiography, computed tomography and magnetic resonance imaging) and histologic analysis it was diagnosed juvenile ossifying fibroma. In the history of the patient there has been an acute lymphocytic leukaemia in the remission for 3 years.Results: Because of large size of mandibular tumour, resultant expansion and destruction of mandibular cortex, the patient underwent right hemimandibulectomy using transmandibular approach. There was no recurrence or complications for two years follow-up.Conclusions: Although juvenile ossifying fibroma is an uncommon clinical entity, its aggressive local behaviour and high recurrence rate means that it is important to make an early diagnosis, apply the appropriate treatment and, especially, follow-up the patient over the long-term.
IBMMS Decision Support Tool For Management of Bank Telemarketing Campaigns
Ali Keles,Ayturk Keles
Computer Science , 2015, DOI: 10.5121/ijdms.2015.7501
Abstract: Although direct marketing is a good method for banks to utilize in the face of global competition and the financial crisis, it has been shown to exhibit poor performance. However, there are some drawbacks to direct campaigns, such as those related to improving the negative attributes that customers ascribe to banks. To overcome these problems, attractive long-term deposit campaigns should be organized and managed more effectively. The aim of this study is to develop an Intelligent Bank Market Management System (IBMMS) for bank managers who want to manage efficient marketing campaigns. IBMMS is the first system developed by combining the power of data mining with the capabilities of expert systems in this area. Moreover, IBMMS includes important features that enable it to be intelligent: a knowledge base, an inference engine and an advisor. Using this system, a manager can successfully direct marketing campaigns and follow the decision schemas of customers both as individuals and as a group; moreover, a manager can make decisions that lead to the desired response by customers.
SAND: An Additive for Stabilzation of Swelling Clay Soils  [PDF]
Bahia Louafi, Ramdane Bahar
International Journal of Geosciences (IJG) , 2012, DOI: 10.4236/ijg.2012.34072
Abstract: An experimental program carried out in this study seeks to understand the physical mechanisms of stabilization of an expansive soil by adding an inert material (sand) at various forms; mixing and intercalation layers of sand. The first aim of the study is to analyze the effect of stabilization on the variation of soil consistency. The results show a marked improvement in soil consistency. Then a study of the effect of the additives on the variation of the swelling in order to solve the lifting structures caused by this phenomenon is carried out. It can be seen that the addition of sand is capable of reducing the swelling action. We complete the study using an ultrasonic device, measuring the propagation velocities of ultrasonic pulse through the tested clay samples. This shows a change occurring in the porosity of the clay when sand is added to it. As a result some interesting conclusions concerning the expansive soil-material amendment are drawn.
The Relation between Freeway Average Speed and Speed Noise  [PDF]
Bahar Zarin, Siamak Ardekani
Journal of Transportation Technologies (JTTs) , 2015, DOI: 10.4236/jtts.2015.52009

Many factors affect the vehicular fuel consumption rate. The most significant traffic-related ones are speed, number of stops, speed noise, and acceleration noise (acceleration standard deviation). Fuel consumption models for both urban and highway traffic are used to evaluate the effect of these factors. Previous literature shows the speed and the acceleration of vehicles as well as the aerodynamic effects are the most commonly used variables in the highway fuel consumption mo dels. However, most existing models are based on the average or cruising speed and the effect of speed variation is by-and-large ignored. Incorporating the speed noise as a variable in the prediction models seems impractical because measuring it is cumbersome. However, knowing the relation between speed and speed noise may allow including the effect of speed noise in the model indirectly. To that end, this study examines the relation between speed and speed noise. The resulting mathematical relation is used to incorporate the speed noise effects in the fuel consumption model.

The Relationship between p53 Expression and Human Papillomavirus in Premalignant and Malignant Uterine Cervical Lesions  [PDF]
Beyhan Varol Mollamehmetoglu, Havva Erdem, Muzaffer Keles
Open Journal of Pathology (OJPathology) , 2016, DOI: 10.4236/ojpathology.2016.62009
Abstract: Objective: We aimed to retrospectively examine a series of premalignant and malignant cervical tissues to study a high-risk HPV 16 infection that, among cervical tissue lesions, carries the greatest risk of conversion to cancer, and the presence of p53 protein immunoreactivity, a tumor suppressor gene product. Methods: Paraffin blocks were studied via immunohistochemical (IHC) method to explore the presence of HPV 16 in 59 premalignant and malignant cervical lesions as well as immunoreactivity of the p53 oncoprotein, the most common cellular tumor suppressor gene product in human cancers. Results: In our series, mutant p53 positivity rate was 35.3% for low-grade CIL, 40% for high-grade CIL, and 46.8% for invasive carcinoma cases. Immune staining for high-risk HPV 16 type yielded a positive staining rate of 47% in low-grade CIL, 80% in high-grade CIL, and 50% in invasive carcinoma. Conclusion: The results of our study indicate a progressive increase in p53 oncoprotein reactivity from cervical intraepithelial neoplasia to invasive carcinoma. This suggests the clinical importance of p53 immunoreactivity in dysplastic progression and neoplastic transformation. HPV is the most commonly encountered oncogenic type in cervical lesions, especially in high-grade CIL and invasive carcinomas. Results of the previous reports suggest that HPV-positive carcinomas release wild type p53 and HPV-negative ones release mutant type p53 were not confirmed by our results, which indicated a mutant type p53 reactivity in HPV- 16 positive carcinoma cases.
Osteoporosis in Dental Practice
Burcu Keles Evlice
Arsiv Kaynak Tarama Dergisi , 2013,
Abstract: It is very significant to know the bone quality of the jaws and structural changes in bone for treatment planning and prognosis in dental practice. It is also important to have detailed information about the bone structure (density, trabeculation, quality, volume) for avoiding surprises during dental surgical procedures including dental implant surgery, graft applications, endodontic surgery, periodontal surgery. Osteoporosis is one of the diseases that cause low bone quality. It is a chronic, systemic, metabolic bone disease that affects the individual's quality of life. The earliest suggestion of an association between osteoporosis and oral bone loss was made in 1960. Osteoporosis-related changes in the jaw-bones are not different from the other bones of the body. It was known that oral bone loss to be a part of common skeletal osteoporosis and planned osteoporosis therapy to be effective in the prevention of oral bone loss. The effects of osteoporosis on the jaw-bones can be summarized as, decrease in bone mineral content and density, deterioration of trabecular structure, increased remodelation rate and osteoblastic activity, reduction in residual bone volume and cortical bone thickness.
Macrofungal Diversity of Erzincan Province (Turkey)
Ali Keles,Kenan Demirel
International Journal of Botany , 2010,
Abstract: The present study was carried out on macrofungi collected from Erzincan province between 2006 and 2007. The macroscopic and ecological features of macrofungi were recorded in field. The specimens were taken to laboratory. The microscopic data and the identification of macrofungi were carried out in the laboratory using related literature and mycological techniques. According to the field and laboratory investigations 191 taxa belonging to 33 families and nine orders in Pezizomycetes and Agaricomycetes classis were determined. All of the taxa are new to the province. Nine taxa are determined as new records for Turkish mycobiota. The new records are Helvella latispora Boud., Conocybe pubescens (Gillet) Kühner, Coprinus strossmayeri Schulz. Coprinus vosoustii Pilát, Leccinum atrostipitatum A.H. Sm. Thiers and Watl., Entoloma poliopus var. parvisporigerum Noordel., Psathyrella friesii Kits v Wav., Russula dryadicola Fellner and Landa and Russula silvicola Shaff.
Managerial and Educational Features of a Turkish University in Central Asia
L. Gagbansua,I. Keles
Bulgarian Journal of Science and Education Policy , 2007,
Abstract: Newly independent states occur after the collapse of Soviet Union. A number of Turkish Higher Education Institutes were opened in Central Asia after this event. One of them is the International Ataturk Alatoo University. The International Ataturk Alatoo University is one of the first private universities established in the Kyrgyz Republic that started its educational activity in 1996. International Ataturk Alatoo University aims at being the best model for higher education depending on the highest education standards and norms in newly reshaping Central Asia. The International Atatürk Alatoo University has an education mentality motivating free thinking and personal skills in a world in which paradigms are rapidly changing. In this paper, in order to find the answer for ‘what makes International Atatürk Alatoo University different from other institutes’; the strategies and features of International Atatürk Alatoo University were examined from the managerial and educational perspectives, interviews were made with students, lecturers and businessmen. Opinions of those people who have different University experiences (one International Atatürk Alatoo University experience and one local or International) were collected and discussed. By this way success factors and problems faced in the region were explained.
Weyl nodes in periodic structures of superconductors and spin active materials
Ahmet Keles,Erhai Zhao
Physics , 2015,
Abstract: Motivated by recent progress in epitaxial growth of proximity structures of s-wave superconductors (S) and spin-active materials (M), we show that the periodic structure of S and M can behave effectively as a superconductor with pairs of point nodes, near which the low energy excitations are Weyl fermions. A simple toy model, where M is described by a Kronig-Penney potential with both spin-orbit coupling and exchange field, is proposed and solved to obtain the phase diagram of the nodal structure, the spin texture of the Weyl fermions, as well as the zero energy surface states in the form of open Fermi lines ("Fermi arcs"). Going beyond the simple model, a lattice model with alternating layers of S and magnetic $Z_2$ topological insulators (M) is solved. The calculated spectrum confirms previous prediction of Weyl nodes based on tunneling Hamiltonian of Dirac electrons. Our results provide further evidence that periodic structures of S and M are well suited for engineering gapless topological superconductors.
Competing many-body instabilities in two-dimensional dipolar Fermi gases
Ahmet Keles,Erhai Zhao
Physics , 2015,
Abstract: Experiments on quantum degenerate Fermi gases of magnetic atoms and dipolar molecules begin to probe their broken symmetry phases dominated by the long-range, anisotropic dipole-dipole interaction. Several candidate phases including the $p$-wave superfluid, the stripe density wave, and a supersolid have been proposed theoretically for two-dimensional spinless dipolar Fermi gases. Yet the phase boundaries predicted by different approximations vary greatly, and a definitive phase diagram is still lacking. Here we present a theory that treats all competing many-body instabilities in the particle-particle and particle-hole channel on equal footing. We obtain the low temperature phase diagram by numerically solving the functional renormalization group flow equations and find a new density wave phase at small dipolar tilting angles and strong interactions, but no evidence of supersolid phase. We estimate the critical temperatures of the ordered phases and discuss the shift of the phase boundaries by thermal fluctuations
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