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      • SCOPUSKCI등재

        Physical Therapy and Rehabilitation of Complex Regional Pain Syndrome in Shoulder Prosthesis

        Celik,,Derya,Demirhan,,Mehmet The Korean Journal of Pain 2010 The Korean Journal of Pain Vol.23 No.4

        We report a 66-year-old woman with complex regional pain syndrome (CRPS) 1 treated with combined medical and active physical therapy. She was diagnosed with CRPS 1 following partial shoulder prosthesis due to proximal humerus fracture. Despite continuous medication and physical therapy, there was no improvement in her pain and functional outcome. Her overall pain was decreased by stellate ganglion block 3 times in two weeks conducted during the second month of the follow-up period. Following the ganglion blockades, pain and the other symptoms were decreased intermittently but range of motion (ROM) and functional status were not satisfied as much as expected. After the third month of follow-up, her passive and active ROM of the shoulder joint was increased after application of manipulation under general anesthesia. In conclusion, because CRPS 1 remains one of the most difficult pain syndromes, early diagnosis and treatment are important to have adequate functional results from physical therapy. Manipulation under general anesthesia may be an additional effective treatment tool to obtain functional improvement in some patients diagnosed with CRPS 1.

      • Predictive Effect of Preoperative Anemia on Long-Term Survival Outcomes with Non-Muscle Invasive Bladder Cancer

        Celik,,Orcun,Akand,,Murat,Keskin,,Mehmet,Zeynel,Ekin,,Rahmi,Gokhan,Yoldas,,Mehmet,Ilbey,,Yusuf,Ozlem Asian Pacific Organization for Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.4

        Background: Anemia is the most common hematologic abnormality in bladder cancer (BC) patients. We evaluated the impact of preoperative anemia on oncologic outcomes in BC undergoing transurethral resection of a bladder tumor (TURBT) for the first time diagnosis. Materials and Methods: We retrospectively evaluated the data collected from 639 patients who underwent TURBT between January 2006 and September 2014 in our department. Of these patients, 320 qualified for inclusion in the study. The primary efficacy endpoint was the effect of preoperative anemia status on cancer-specific and overall survival. Independent t-test and chi-square analyses were performed to assess the effects of anemia on oncologic outcomes. Survival was estimated by using the Kaplan-Meier test. Results: There were 118 (36.9%) and 202 (63.1%) patients in the anemia (Group-1) and non-anemia groups (Group-2), respectively. The median follow-up duration was 68 months. Anemia was associated with decreased overall survival (p<0.001). Comparison between cancer-specific survival of two groups did not show any statistically significant difference (p=0.17). Conclusions: Preoperative anemia status of BC patients according to World Health Organization classification is associated with decreased overall survival, but not with cancer-specific survival. We think that preoperative hemoglobin levels should be considered in patient counseling and decision-making for additional therapy.

      • Effects of Intraperitoneally Administered Lipoic Acid, Vitamin E, and Linalool on the Level of Total Lipid and Fatty Acids in Guinea Pig Brain with Oxidative Stress Induced by H<sub>2</sub>O<sub>2</sub>

        Celik,,Sait,Ozkaya,,Ahmet 생화학분자생물학회 2002 Journal of biochemistry and molecular biology Vol.35 No.6

        The aim of our study was to investigate the protective effects of intraperitoneally-administrated vitamin E, dl-alpha lipoic acid, and linalool on the level of total lipid and fatty acid in guinea pig brains with oxidative stress that was induced by $H_2O_2$. The total brain lipid content in the $H_2O_2$ group decreased when compared to the $H_2O_2$ + vitamin E (p<0.05), $H_2O_2$ + linalool (p<0.05), ALA (p<0.05), control (p<0.01), linalool (p<0.01), and vitamin E (p<0.01) groups. While the proportion of total saturated fatty acid (${\Sigma}SFA$) in the $H_2O_2$ group significantly increased (p<0.005) when compared to the vitamin E group, it only slightly increased (p<0.01) when compared to the control and $H_2O_2$ + vitamin E groups. The ratio of the total unsaturated fatty acid (${\Sigma}USFA$) in the $H_2O_2$ groups was lower (p<0.05) than the control, vitamin E, and $H_2O_2$ + vitamin E groups. The level of the total polyunsaturated fatty acid (${\Sigma}PUEA$) in the $H_2O_2$ group decreased in when compared to the control, vitamin E, and $H_2O_2$ + vitamin E groups. While the proportion of the total w3 (omega 3), w6 (omega 6), and PUFA were found to be lowest in the $H_2O_2$ group, they were slightly increased (p<0.05) in the lipoic acid group when compared to the control and $H_2O_2$ + lipoic acid groups. However, the level of ${\Sigma}SFA$ in the $H_2O_2$ group was highest; the level of ${\Sigma}USFA$ in same group was lowest. As the proportion of ${\Sigma}USFA$ and ${\Sigma}PUFA$ were found to be highest in the linalool group, they were decreased in the $H_2O_2$ group when compared to the control group. Our results show that linalool has antioxidant properties, much the same as vitamin E and lipoic acid, to prevent lipid peroxidation. Additionally, vitamin E, lipoic acid, and linalool could lead to therapeutic approaches for limiting damage from oxidation reaction in unsaturated fatty acids, as well as for complementing existing therapy for the treatment of complications of oxidative damage.

      • Breast Cancer Awareness among Turkish Nursing Students

        Celik,,Sevim,Tasdemir,,Nurten,Sancak,,Hulya,Demirel,,Merve,Akman,,Ozlem,Kara,,Merve Asian Pacific Organization for Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.20

        Background: This study conducted to determine breast cancer awareness and influencing factors among nursing students in the West Black Sea Region in Turkey. Materials and Methods: This cross-sectional descriptive study was conducted between April-May, 2014. The sample was 270 female nursing students. Data were collected by Personal Information Form and Champion's Health Belief Model Scale (CHBMS). Results: The students' mean age was $21.6{\pm}2.09$ and 81.1% had knowledge about breast cancer from their academic education. It is found that 63.7% of the students performed Breast Self-Examination (BSE) and 11.1% had a family member diagnosed with breast cancer. The CHBMS mean score of the students was $117.7{\pm}14.5$. Conclusions: Breast cancer awareness of nursing students is on a good level and was affected by family history of breast cancer and health beliefs.

      • SCIESCOPUSKCI등재후보

        Determination of the Vlasov foundation parameters -quadratic variation of elasticity modulus- using FE analysis

        Celik,,Mecit,Omurtag,,Mehmet,H. Techno-Press 2005 Structural Engineering and Mechanics, An Int'l Jou Vol.19 No.6

        The objective of this research was to determine the Vlasov soil parameters for quadratically varying elasticity modulus $E_s$(z) of the compressible soil continuum and discuss the interaction affect between two close plates. Interaction problem carried on for uniformly distributed load carrying plates. Plate region was simulated by Kirchhoff plate theory based (mixed or displacement type) 2D elements and the foundation continuum was simulated by displacement type 2D elements. At the contact region, plate and foundation elements were geometrically coupled with each other. In this study the necessary formulas for the Vlasov parameters were derived when Young's modulus of the soil continuum was varying as a quadratic function of z-coordinate through the depth of the foundation. In the examples, first the elements and the iterative FE algorithm was verified and later the results of quadratic variation of $E_s$(z) were compared with the previous examples in order to discuss the general behavior. As a final example two plates close to each other resting on elastic foundation were handled to see their interaction influences on the Vlasov foundation parameters. Original examples were solved using both mixed and displacement type plate elements in order to confirm the results.

      • KCI등재

        A Fuzzy TOPSIS Approach Based on Trapezoidal Numbers to Material Selection Problem

        Celik,,Erkan,Gul,,Muhammet,Gumus,,Alev,Taskin,Guneri,,Ali,Fuat Korea Data Strategy Society 2012 Journal of information technology applications & m Vol.19 No.3

        Material selection is a complex problem in the design and development of products for diverse engineering applications. This paper is aimed to present a fuzzy decision making approach to deal with the material selection in engineering design problems. A fuzzy multi criteria decision-making model is proposed for solving the material selection problem. The proposed model makes use of fuzzy TOPSIS (Technique for Order reference by Similarity to Ideal Solution) with trapezoidal numbers for evaluating the criteria and ranking the alternatives. And result is compared with fuzzy VIKOR (VlseKriterijumska Optimizacija I Kompromisno Resenje in Serbian, means Multi criteria Optimisation and Compromise Solution) which is proposed by Jeya Girubha and Vinodh [2012]. The present paper is aimed to also improve literature of fuzzy decision making for material selection problem.

      • Sensor clustering technique for practical structural monitoring and maintenance

        Celik,,Ozan,Terrell,,Thomas,Gul,,Mustafa,Catbas,,F.,Necati Techno-Press 2018 Structural monitoring and maintenance Vol.5 No.2

        In this study, an investigation of a damage detection methodology for global condition assessment is presented. A particular emphasis is put on the utilization of wireless sensors for more practical, less time consuming, less expensive and safer monitoring and eventually maintenance purposes. Wireless sensors are deployed with a sensor roving technique to maintain a dense sensor field yet requiring fewer sensors. The time series analysis method called ARX models (Auto-Regressive models with eXogeneous input) for different sensor clusters is implemented for the exploration of artificially induced damage and their locations. The performance of the technique is verified by making use of the data sets acquired from a 4-span bridge-type steel structure in a controlled laboratory environment. In that, the free response vibration data of the structure for a specific sensor cluster is measured by both wired and wireless sensors and the acceleration output of each sensor is used as an input to ARX model to estimate the response of the reference channel of that cluster. Using both data types, the ARX based time series analysis method is shown to be effective for damage detection and localization along with the interpretations and conclusions.

      • KCI등재SCIESCOPUS

        Fast and Efficient Method for Fire Detection Using Image Processing

        Celik,,Turgay Electronics and Telecommunications Research Instit 2010 ETRI Journal Vol.32 No.6

        Conventional fire detection systems use physical sensors to detect fire. Chemical properties of particles in the air are acquired by sensors and are used by conventional fire detection systems to raise an alarm. However, this can also cause false alarms; for example, a person smoking in a room may trigger a typical fire alarm system. In order to manage false alarms of conventional fire detection systems, a computer vision-based fire detection algorithm is proposed in this paper. The proposed fire detection algorithm consists of two main parts: fire color modeling and motion detection. The algorithm can be used in parallel with conventional fire detection systems to reduce false alarms. It can also be deployed as a stand-alone system to detect fire by using video frames acquired through a video acquisition device. A novel fire color model is developed in CIE $L^*a^*b^*$ color space to identify fire pixels. The proposed fire color model is tested with ten diverse video sequences including different types of fire. The experimental results are quite encouraging in terms of correctly classifying fire pixels according to color information only. The overall fire detection system's performance is tested over a benchmark fire video database, and its performance is compared with the state-of-the-art fire detection method.

      • KCI등재SCOPUS

        Examining combustion and emission characteristics of cotton methyl ester to which manganese additive material was added

        Mehmet,Celik 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.12

        Important researches is being conducted in order to decrease the emissions and fuel consumption. Emissions and fuel consumption has been dramatically decreased by engine design studies. On the other hand it is difficult to obtain the desired results by engine desing only. Studies are being made on fuel additives so as to improve the engine performance, combustion and emission characteristics. In this study manganese additive was added into a cotton methyl ester (C0) and accordingly combustion and emission characteristics at full load and different speed intervals were examined. In the experiments conducted for this mixture a diesel engine with single cylinder was used and the maximum power was obtained at 2750 rpm. Maximum cylinder pressure was obtained at 2200 rpm where as maximum moment was obtained in C0Mn12 fuel. At the same time heat release rate was at 0.021 kJ/ o CA and maximum rate of pressure rise was found to be 6.73 bar/ o CA. Minimum CO and THC emission were obtained at 2200 rpm and maximum decrease in THC emisssion occured with the C0Mn12 fuel when compared to the C0 fuel, maximum decrease in THC was found to be 5.01 %. Maximum increase in emissions when compare to C0 fuel was 11.58 % in C0Mn12 fuel at 3250 rpm while they were 33.14 % at 1750 rpm. At 2750 rpm maximum decrease of emissions in the C0Mn12 fuel was found to be 2.74 %.

      • KCI등재SCOPUS
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