Browsing by Author "Yilmaz, Murat"

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Advantages of Us in Percutaneous Dilatational Tracheostomy: Randomized Controlled Trial and Review of the Literature
(Radiological Soc North America, 2014) Yavuz, Alpaslan; Yilmaz, Murat; Goya, Cemil; Alimoglu, Emel; Kabaalioglu, Adnan
Purpose: To compare procedure times and complication rates of preincisional ultrasonographic (US) evaluation and perioperative US guidance in percutaneous dilatational tracheostomy (PDT) with those of the current standard of care, PDT performed without image guidance. Materials and Methods: Between December 2007 and January 2011, 341 patients were included in this institutional review board-approved study after informed consent was obtained from the patients or their relatives. The patients were divided randomly into two groups. In group A (n = 166), the possible causes of complications, such as aberrations of tracheal, thyroidal, and vascular structures, were determined with US, and tracheal measurements were performed by using US. The clinician's initial considerations at physical examination were compared with the US findings. PDT was subsequently performed with US guidance in suitable cases. In group B (n = 175), PDT was performed solely on the basis of physical landmarks. The procedure times and complication rates were compared across groups by using the Fisher exact test. Results: In group A, the puncture sites designated at the physical examination were reconsidered in 39 (23.8%) of 164 cases. The perioperative complication rates were slightly lower in group A (7.8% [12 of 154]) than in group B (15.0% [25 of 167]); however, the difference did not achieve statistical significance (P = .054). The mean procedure times for groups A and B were 24.09 minutes +/- 8.05 (standard deviation) (range, 14-68 minutes) and 18.62 minutes +/- 6.34 (range, 12-81 minutes), respectively (P = .001), and the numbers of patients in each group who required multiple puncture attempts were six (3.9%) of 154 and 23 (13.6%) of 169 (P = .003), respectively. Conclusion: The use of US guidance before and during PDT could render the procedure easier and safer, with fewer complications but a slightly longer procedure time. (C) RSNA, 2014
The Change of the Structure and Educational Status of Population in Erzurum Province That Has Been Occurred in Quarter Century (1990-2015)
(Marmara Univ, 2017) Yilmaz, Murat
In this study, the change of the human sex ratio, age structure, dependency rate and education status of the population in Erzurum province are analyzed that has been occurred in last 25 years. Erzurum province is in East Anatolian Region's Erzurum-Kars part. The province which is in a high area the terrestrial climate features are seen. In Erzurum, where economic resources are limited, there is a long period of immigration. As a matter of fact, the province population has decreased by -1,2% every year in the last 15 years. The sex ratio of the population in Erzurum is high (2015-1005). In 1990, 40,9% of the provincial population consisted of 0-14 age group, but this proportion decreased to 27,3% in 2015. In the same period, the proportion of the working age population increased from 55,5% to 64,5% and the elderly population increased from 3,6% to 8,2%. While the dependency rate of the population in 1990 was 80%, this value decreased to 55% in 2015. Educational status of the population in Erzurum province was shown that important development related education in the province occurred between 1990 and 2015. Literacy rate in 1990 was 73,9 %, in 2015, literacy rate increased to 92,6 % in the province. Literacy rate by gender is also similar. The female literacy rate was 62,1 % in 1990. In 2015 female literacy rate was increased 88,1 % in the Erzurum. The male literacy rate was 85,6% in 1990 in the province. In 2015 male literacy rate was increased 97,1 %. Between 1990 and 2015 literacy rate increased significantly in the province. In Erzurum 70,1% of literate are only literate, primary school graduates and secondary school graduates. In the province, only 29,9 % of the literate population has a diploma higher than 12th. grades. Much more effort and investment must be conducted to increase higher educational attendance.
The Evaluation of Blood Ethyl Alcohol Levels of Drivers Involved in Traffic Accidents
(Nobel Ilac, 2016) Asirdizer, Mahmut; Yilmaz, Murat; Aker, Rezzan Gulhan; Kucukibrahimoglu, E. Esra; Ates, Ismail; Ince, C. Haluk
Objective: We aimed to evaluate blood alcohol concentrations (BAC) of drivers involved in traffic accidents, to define procedures of blood sampling for BAC analysis and legal sanctions. Material and Method: In 2011 blood samples from 2251 drivers sent to the Chemistry Department of the Council of Forensic Medicine for alcohol determination were analyzed by dual column head-space/gas chromatography flame-ionisation detector (HS/GC-FID). BAC levels above 10 mg/dl were back-extrapolated to the time of crime. Rate of reduction was accepted 15 mg/dl/hr and BAC effects on safe driving skills were discussed. Results: Ethanol was present in 19.4% of drivers. BAC was above 100 mg/dl in more than half of the cases (56.5-64.5%) and was above the allowed level in traffic (50mg/dl) in the majority (78.1-89%). In contravention of legislation, blood sampling was delayed more than two hours following traffic accidents and this created discrepancies in BAC level calculations. Conclusion: Accurate results can be obtained with timely and properly taken blood samples. Health care workers may face serious legal sanctions due to damages that may arise because of blood samples collected contrary to the procedure. An important part of traffic accidents can be prevented with reduction of the allowed BAC in traffic to 30 mg/dl.
The Growth, Structure and Distribution of Population in Caybagi (Kotur) River Basin (Saray, Van)
(Istanbul Univ, Fac Letters, dept Geography, 2016) Yilmaz, Murat
In this study the development of the population in Caybagi (Kotur) basin, current population status and distribution of population are analyzed. Caybagi basin is located in eastern part of Turkey next to the Iranian border. The research field (basin) is completely located in Saray District of Van Province. Study area includes 21 villages and two hamlets. The population of the research field (Caybagi basin) in 1935 was 1884. The population was increased steadily until 2007 and reached 16619. After 2007 till today's population decreased 15684. In the search field, the human sex ratio is high at total population. However, this ratio in some settlements is lower. Analysis of age groups of population in Caybagi basin, 40,4% population younger than 14 years of age, 56,8 % working age, and 2,8 % elderly age. Dependency rate is (76%) in the basin which is well higher than the country average rate (46 %). Currently in Saray District over the 6 years-of-age, literacy rate is % 92. In 2014, the population density rate is 100 in Turkey. In Caybagi river basin density rate is 21. It is well below from country's level. Orenburc, Beyarslan and Karahisar are differentiated from other rural settlements by having more population.
The Growth, Structure and Distribution of Population in Caybagi (Kotur) River Basin (Saray, Van) (Vol 32, Pg 1, 2016)
(Istanbul Univ, Fac Letters, dept Geography, 2016) Yilmaz, Murat
Ownership Status and Parcel Size of Agricultural Land in Ozalp District and Vegetative Production
(Marmara Univ, 2016) Yilmaz, Murat
Ozalp District is a district of Van Province in Eastern Anatolian Region Van Area. In this study, ownership status of agricultural lands, parcel size in Ozalp and herbal farming in the district have been examined. While almost all farmer families have farming land, it is seen that farming lands are small seized and sectional. Average height in the district is higher and continental climate is available. Owing to the climate conditions, number of the farming herbs is low. In the district, cereals such as wheat and barley and forage crops such as clover and trefoil are known as main agricultural products. Areas for industrial plants and vegetable farming in the district are very narrow. Livelihoods are narrow in Ozalp so, population living in the rural areas of the district immigrates to several cities notably to the west region cities in the country. Some new practices and projects are needed to be implemented to increase the income of population living in the district. Consolidation of the agricultural lands, using crop rotation instead of fallowing, increasing the watering opportunities, ground care, seed breeding and fertilization additional to breeding of cattle and sheep animal ancestry, improving alternative livelihoods such as beekeeping and aquaculture are examples for these innovations and projects. We hope that the study will contribute the increasing the vegetative and animal production in Ozalp District so contribute to income increasing of families in the rural area.
Ripple Reduction at Speed and Torque of Step Motors Used on a Two-Axis Robot Arm
(Pergamon-elsevier Science Ltd, 2010) Rustemli, Sabir; Yilmaz, Murat; Demirtas, Metin
This paper presents the control of two axis robot arm. The system is consisted of two step motors, robot arm, computer and PIC16F84A. One of them controls the robot arm via parallel port of the computer. The other one controls end element on the arm by PIC16F84A. PIC16F84A drives the motor by the designed circuit drive. Although the control of the step motor is very easy, they work choppily. Therefore, it is necessary to reduce the ripples occurred at the speed and torque of the step motor. In this study, proportional-integral-derivative (PID) controller is used to reduce the ripples. The obtained results show the proposed method is very successful. (C) 2010 Elsevier Ltd. All rights reserved.