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Search Results: 1 - 10 of 520 matches for " Hayat GUVEN "
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The Etiologic and Prognostic Importance of High Leukocyte and Neutrophil Counts in Acute Ischemic Stroke
Journal of Neurological Sciences , 2010,
Abstract: Objectives: Inflammatory mechanisms play an important role in the pathogenesis of cerebral ischemia and in the risk of stroke. In several studies, elevated leukocyte count has been associated with cardiovascular and cerebrovascular events. The aim of this study is to investigate the relationship between the leukocyte and neutrophil counts and stroke severity, short term prognosis and stroke subtypes of the patients with acute ischemic stroke.Materials/Methods: Leukocyte and neutrophil counts were measured in 166 consecutive acute ischemic stroke patients in the first 24 hour of admission. Clinical findings, stroke risk factors and brain imagings were evaluated. According to their etiology, patients were classified by using the TOAST criteria. Stroke severity was assessed by the modified Rankin Scale(mRS) on admission and discharge, National Institutes of Health Stroke Scale (NIHSS) was used on admission.Results: While 51(%30.72) patients had leukocyte ≥10000/μl and 115(%69.28) patients had leukocyte <10000/ μl, 70(%42.17) patients had neutrophil ≥6100/μl and 96(%57.83) patients had neutrophil<6100/μl. leukocyte and neutrophil counts were significantly higher in severe stroke (p<0.001) hence short term prognosis was significantly poor in these patients. (p<0.001) We found a strong correlation between large vessel disease and high leukocyte count (p<0.05) and also between small vessel disease and normal leukocyte count. (p<0.05) Results were similar for neutrophil levels of patients according to stroke subtypes.Conclus on: According to our study; high leukocyte and neutrophil levels on admission correlate with large vessel disease and therefore could be a predictor of stroke severity and unfavourable outcome.
Modified Technique for Internal Ureteroileal Stenting in Orthotopic Neobladders  [PDF]
Guven Aslan
Open Journal of Urology (OJU) , 2011, DOI: 10.4236/oju.2011.12005
Abstract: We introduce a modified surgical technique for internal ureteroileal stenting to improve cosmesis in patients undergoing ileal neobladder. Internal ureteric stents are secured to the tip of the urethral catheter with nonabsorbable suture facilitating removal of the stents postoperatively 2-3 weeks along with the urethral catheter. This surgical modification was applied to 21 patients of whom no significant surgical or infectious complication due to single urethral catheter was observed. Internal ureteral stenting is simple, safe and inexpensive alternative to conventional methods to support ureteroileal anastomosis in patients undergoing orthotopic bladder substitution.
Comment on the Paper “Condom-Assisted Transurethral Resection: A New Surgical Technique for Urethral Tumor”, Surgical Science, Vol. 1, 2010, pp. 46-48  [PDF]
Guven Aslan
Surgical Science (SS) , 2011, DOI: 10.4236/ss.2011.24042
Abstract: The authors introduce a new technical modification which facilitates endoscopic resection of urethra tumors located at navicular fossa by using a tipcut condom that covers the resectoscope and the penis. This tech-nique can be used in the diagnosis and management of all kind male anterior urethral lesions at this location.
Dangers to Children at Home: Corrosive esophageal burn
Ahmet Guven
TAF Preventive Medicine Bulletin , 2008,
Abstract: Inappropriate storage of cleaners which excessively used in daily is hazardous to children. Ingestion of potent corrosive agents, especially alkaline solutions may lead to acute esophageal burns, esophageal or stomach perforation, and even to death. Early of these injuries may be associated with esophageal strictures in later and the treatment of strictures might be and take long follow-up. This article reviews related issues on the diagnosis and management of esophageal burns, strictures and preventive medicine in children. [TAF Prev Med Bull. 2008; 7(6): 535-540]
The Turkish Online Journal of Distance Education , 2009,
Abstract: The researchers have mostly emphasized the epistemological beliefs which were considered as significant in learning process along with the desire to reveal the nature of learning. Epistemological belief is defined as the “individuals’ subjective beliefs about what information means and how knowing and learning occur”. It is a fact that the teachers’ epistemological beliefs have important effect on the students’ learning process. Teachers are the models for the students with both their patterns of behavior and learning approaches. The aim of this study was to determine the epistemological beliefs of the students attending to pre-school education and English language teaching departments in distance education, besides it was attempted to investigate these beliefs in terms of certain variables, namely, gender, department and grade that the students attend, and their academic achievement level, lastly the education level of their parents. The study was conducted through a descriptive method and 697 pre-service teachers composed the sampling of the study. To collect data, “Epistemological Belief Scale”, which was developed by Schommer (1990) and adapted to Turkish by Deryakulu and Büyük ztürk (2002), was used. As a result, it was obtained that the epistemological beliefs of the students in distance education developed at low level. Additionally, it was found that the epistemological beliefs of the pre-service teachers differed in terms of gender, department, grade, academic achievement, education level of parents.
The Turkish Online Journal of Distance Education , 2012,
Abstract: The epistemological beliefs in learning process have been investigated from different aspects in relation with many variables in literature. Such beliefs are defined as individuals’ beliefs regarding knowledge and learning. As another related, popular concept, the metacognitive strategies are identified as the strategies used to control the process of obtaining knowledge. Thus, it is seen that both of them are employed to make learning more effective. Within this framework, the aim of the present study was to determine the epistemological beliefs and metacognitive strategies of the pre-service teachers in the distance and formal education English Language Teaching program and to investigate whether there was any difference/ were any differences between them. To collect data, “Epistemological Belief Scale” developed by Schommer (1990) and translated and validated by Deryakulu and Büyük ztürk (2002) and “Metacognitive Strategy Inventory” which was adapted for university students by Y ld z, Akp nar and Ergin (2006) were used. Then through the descriptive method they were analyzed. As a result of study, it was determined that there was a significant relationship between the epistemological beliefs and metacognitive strategy use of ELT pre-service teachers in both formal and distance education programs.
Lung Adenocarcinoma: a Rare Metastasis to the Tongue
Mehmet GUVEN
Trakya Universitesi Tip Fakultesi Dergisi , 2010,
Abstract: Metastatic lesions in the tongue are extremely rare. A 60-year-old man with lung adenocarcinoma is presented in this report. He had no metastases except simultaneous tongue and cervical lymph node metastases.
Corrigendum to: "Lie ideals in prime rings with (sigma, au) derivation International Journal of Algebra, 3(17), 2009, 857-862
E. Guven
International Journal of Algebra , 2012,
The Biopotentials and Measuring Devices
Mustafa Guven
Arsiv Kaynak Tarama Dergisi , 2012,
Abstract: Many organs in the human body, produces many different types of the electric activity, such as the muscle groups, heart, brain and eyes. These electric activities are also called biopotentials. Measurement of the biopotentials from the human body can indicated vital clues as to normal or pathological functions of the organs. Biopotential signals are small in amplitude and consists of very low frequencies. Therefore, the signals need to be amplified and filtered to make them compatible with devices such as displays, recorders, or analog to digital converters for computerized equipment. In addition, biopotential measurements are corrupted by environmental and biological sources of interference. Amplifiers and filters adequate to measure these signals have to satisfy very specific requirements. This study reviews the origins, acuisition of biopotentials, and design of the medical instruments used in biopotential measurement. [Archives Medical Review Journal 2012; 21(3.000): 174-188]
Perturbations of a topological defect as a theory of scalar fields interacting with an external vector potential
Jemal Guven
Physics , 1993, DOI: 10.1103/PhysRevD.48.5562
Abstract: This is a revised version of gr-qc/9304033
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