OALib Journal期刊

ISSN: 2333-9721




2019 ( 12 )

2018 ( 21 )

2017 ( 18 )

2016 ( 36 )


匹配条件: “Mustafa Zeybek” ,找到相关结果约3288条。
Filtering Data of High-Resolution Terrestrial Laser Scanner and Effects of Filtrations on the Landslide Monitoring
Mustafa Zeybek, ?smail ?anl?o?lu, A??r Gen?
Dogal Afetler ve Cevre Dergisi , 2015, DOI: 10.21324/dacd.22635
Abstract: Monitoring and investigating natural disasters is one of the most important works for decreasing damages and preventing losses. In this study, using Terrestrial Laser Scanning (TLS) techniques for landslide monitoring studies, processing data obtained from these techniques and evaluating the results were performed. Research was carried out on a landslide zone which occurred in the Middle Taurus Mountains. When previous studies were examined, deformations reaching up to 5m were formed in the region. In this article, automatic filtering of terrestrial laser scanning data, filtering of trees and other objects on the earth and acquiring digital elevation model (DEM) and by means of this model, assessing changes occurring in the elevation components on the land surface and the effect of filtering algorithms on analysis were investigated. Progressive Morphological Filtering (PMF) algorithm was used for this research. Point cloud filtering algorithm has automatically obtained two filtered data as the ground and the non-ground. Using the real surface ground models of the earth to obtain DEM model’s reflection of real earth surface has a direct impact on determining the true surface deformation. In conclusion, things such as trees, objects, vehicles, houses, man-made structures and vegetation must be filtered out of data because analysis in a regional base may cause misinterpretation without filtered point cloud data. The results revealed that the filtered comparison analyzes were evaluated easier. In addition, changes in plant cover in different periods for the comparison of models has been automatically filtered and the landslide movements have been interpreted with purifying from artificial distortion.
Left Ventricular Outflow Tract Obstruction after Ross-Konno Operation  [PDF]
Cenap Zeybek, Mustafa Kemal Avsar, Ozgür Yildirim, Mehmet Salih Bilal
Open Access Library Journal (OALib Journal) , 2017, DOI: 10.4236/oalib.1103644
INTRODUCTION: SAM (systolic anterior motion) is defined as the dynamic motion of the anterior mitral valve leaflet to the left ventricular outflow tract (LVOT) during systole. In this study, we present a case which we encountered with significant left ventricular outflow tract obstruction (LVOTO) related to SAM and developed after Ross-Konno operation. METHOD: A 4-month, 6.2 kg girl underwent balloon valvuloplasty due to bicuspid aortic stenosis when she was one-month. Ross-Konno operation was performed on the patient due to residual aortic stenosis (peak gradient of 140 mm Hg) and severe aortic regurgitation. Intraoperative echocardiography (ECHO) showed a peak gradient of 25 mmHg between the LV-Aorta. RESULTS: In the ICU at postoperative 3. hour, when tachycardia began with the patient’s hemodynamic deterioration, SAM in ECHO and concomitant LVOTO (Peak grad: 140 mmHg) and 2nd degree MY was identified. Pulmonary edema was observed along with a decrease in oxygen saturation. The treatment initiated for removing the patient from hyperdynamic state and reducing the volume deficit. Sedation and analgesia were increased. The low-dose dobutamine was stopped. Tachycardia was attempted to take control with beta-blockers. The same treatment was continued on day 2, but the frequency of patient’s tachycardia has not been reduced despite high doses of beta blockers. Heart rate was controlled by Amiodarone. On day 4, mitral regurgitation was slightly decreased while the LV-Aorta gradient was measured between 50-60 mmHg. On day 5, SAM has diminished greatly (20 mmHg). The patient was extubated 6th day and was discharged on the 12th day without any problem. One year after, LVOT gradient was not detected in the ECHO. DISCUSSION: In adult patients, although a variety of surgical procedures for the removal of SAM had been reported, no experience in infants exists in the literature on these techniques. Despite intensive medical treatment, it may take longer than expected. We think that also the decline of existing preoperative LV hypertrophy in this period contributes.
Full Length Research Paper Improving the traditional sesame seed planting with seed pelleting
T Dogan, A Zeybek
African Journal of Biotechnology , 2009,
Abstract: The aim of this study is to determine the effect of seed pelleting in a variety of sesame types on yield and yield factors. In this study, it is suggested that with the help of seed pelleting, it will be possible to achieve a better planting, and subsequently, to acquire an increase in the yield and its elements. In this research, Muganli-57, Ozberk-82 and Golmarmara type seeds were used, which are all officially registered and commonly used seed kinds in Turkey. Two types of planting were utilized: 1- the traditional planting method used worldwide, 2- alternative sensitive method. In the sensitive method, the pelleted sesame seeds treated with a special pelleting mixture had a diameter of 3 mm or larger. These pelleted sesame seeds were planted with a pneumatic spacing planter. This study was done in Adnan Menderes University, Agricultural Faculty, Research and Practice Centers located in Menderes Plain and in the field of the plant production center of Dalaman. The arable field trials were done in two locations with a split plot trial method with three replications. In this study, the height of the plants (cm), number of lateral branches (lateral branches plant-1), number of capsules per plant (capsule plant-1), height of first capsule (cm), number of plants harvested per square meter, yield (kg ha-1) and thousand kernel weight (g) were analyzed for both pelleted and nonpelleted sesame seeds. As a result, the pelleted sesame seeds improved the yield significantly compared to the normal sesame seeds. It was found that the pelleted sesame seeds had a mean yield value of 1976.3 kg ha-1, whereas the nonpelleted sesame seeds had a mean yield value of 1243.2 kg ha-1. Statistically significant differences exist between the pelleted and non-pelleted seeds in terms of the height of the plants (cm), number of lateral branches per plant (branch plant-1), number of capsules per plant (capsule plant-1), height of first capsule (cm), number of plants harvested (plant/ m2), yield values (kg ha-1) and thousand kernel weight (g).
Determination of Virulence Genes Frequencies in Wheat Stripe Rust (Puccinia striiformis f. sp. tritici) Populations During Natural Epidemics in the Regions of Southern Aegean and Western Mediterranean in Turkey
Ahmet Zeybek,Fahri Yigit
Pakistan Journal of Biological Sciences , 2004,
Abstract: This study was carried out to investigate virulence gene(s) frequency of wheat stripe rust (Puccinia striiformis f. sp. tritici) populations during natural epidemics, in nine different fields, located in the regions of Southern Aegean and Western Mediterranean. Stripe rust uredospores were collected from diseased plants in 2000 and 2001. Virulence of pathogens were determined by seedling test. The results showed that virulence gene frequency on rust population varies depending on the type of genes. The genes which have high virulence frequency were more stable. In both experimental years, it was established that the virulence frequency of Yr1, Yr2, Yr3a, Yr9, Yr17, Sd and So genes ranged between 7.8 and 100% in all populations while Yr6, Yr7, Yr8 and Yr10 genes were observed in all locations.
Integrated Biological and Chemical Control of Powdery Mildew of Barley Caused by Blumeria graminis F.sp. Hordei Using Rhizobacteria and Triadimenol
Fahri Yigit,Ahmet Zeybek
Pakistan Journal of Biological Sciences , 2004,
Abstract: In this study, ability of triadimenol and rhizobacteria to control the powdery mildew of barley caused by Blumeria graminis f.sp. hordei were investigated in field conditions on eight barley cultivars with different resistance genes. The pathogen fungus was isolated from the diseased plants in fields. Rhizobacteria were isolated from the healthy barley plants via dilution method and applied to seeds and leaf surface when plants were in the first or second leaf stage. Application of rhizobacteria alone gave the best control in Bornova-92, Yercil and Yildirim cultivars by 26.96, 13.92 and 17.65%, respectively. Triadimenol and rhizobacteria combination controlled the disease by 60.31-72.89% while triadimenol alone prevented the disease by 58.25-65.34%. Protection in both treatments showed variation in tested cultivars (p<0.05). Disease index was found lower in barley cultivars with more than one resistance genes.
Comparison between OSPFv3 and OSPFv2  [PDF]
Mustafa ElGili Mustafa
Wireless Sensor Network (WSN) , 2014, DOI: 10.4236/wsn.2014.64006
Abstract: This paper aims to compare between OSPFv2 and OSPFv3, to explain the impact of the change in OSPFv3 packet format and the over load when OSPFv3 uses IPv6 packet instead of IPv4 packet format that was used by OSPFv2, and the comparison based on common OSPF packets that was sent in the same network.
Multimodal compression applied to biomedical data  [PDF]
Emre H. Zeybek, Régis Fournier, Amine Na?t-Ali
Journal of Biomedical Science and Engineering (JBiSE) , 2012, DOI: 10.4236/jbise.2012.512094
Abstract: In this paper, we introduce a novel approach to compress jointly a medical image and a multichannel bio-signals (e.g. ECG, EEG). This technique is based on the idea of Multimodal Compression (MC) which requires only one codec instead of multiple codecs. Objectively, biosignal samples are merged in the spatial domain of the image using a specific mixing function. Afterwards, the whole mixture is compressed using JPEG 2000. The spatial mixing function inserts samples in low-frequency regions, defined using a set of operations, including down-sampling, interpolation, and quad-tree decomposition. The decoding is achieved by inverting the process using a separation function. Results show that this technique allows better performances in terms of Compression Ratio (CR) compared to approaches which encode separately modalities. The reconstruction quality is evaluated on a set of test data using the PSNR (Peak Signal Noise Ratio) and the PRD (Percent Root Mean Square Difference), respectively for the image and biosignals.
The Selection of Proper Auxiliary Parameters in the Homotopy Analysis Method. A Case Study: Uniform Solutions of Undamped Duffing Equation  [PDF]
Mustafa Turkyilmazoglu
Applied Mathematics (AM) , 2011, DOI: 10.4236/am.2011.26105
Abstract: The present paper is concerned with two novel approximate analytic solutions of the undamped Duffing equation. Instead of the traditional perturbation or asymptotic methods, a homotopy technique is employed, which does not require a small perturbation parameter or a large parameter for an asymptotic expansion. It is shown that proper choices of an auxiliary linear operator and also an initial approximation during the implementation of the homotopy analysis method can yield uniformly valid and accurate solutions. The obtained explicit analytical expressions for the solution predict the displacement, frequency and period of the oscillations much more accurate than the previously known asymptotic or perturbation formulas.
Osteoma of mastoid process obstructing external auditory canal: A case report  [PDF]
Aziz Mustafa
Health (Health) , 2012, DOI: 10.4236/health.2012.44034
Abstract: Objective: To discuss the surgical treatment of recurrent osteoma of the mastoid process of the temporal bone, that obstructed external auditory canal causing unilateral conductive hearing loss. Setting: The study was carried out in ENT Clinic, University Clinical Center of Kosovo, Prishtina, Kosovo. Design: Retrospective review of a clinical case. Patient, Intervention and Result: We treated surgically with success a 14-year-old boy with osteoma of mastoid process, obstructing the external auditory canal of the left ear and causing conductive hearing loss. Axial and coronal computed tomography scans revealed an compact bone lesion that obstructed the canal. Complete removal of the lesion was achieved by a retroauricular approach. Conclusion: In order to achieve complete removal of the osteoma, drilling of the lesion must be performed not through the tumor, but around the osteoma, in the surrounding bone tissue.
Alternative Approach to Time Evaluation of Schrodinger Wave Functions  [PDF]
Mustafa Erol
Journal of Modern Physics (JMP) , 2012, DOI: 10.4236/jmp.2012.311211
Abstract: Time evaluation of wave functions for any quantum mechanical system/particle is essential nevertheless quantum mechanical counterpart of the time dependant classical wave equation does simply not appear. Epistemologically and ontologically considered time dependant momentum operator is initially defined and an Alternative Time Dependant Schrodinger Wave Equation (ATDSWE) is plainly derived. Consequent equation is primarily solved for the free particles, in a closed system, signifying a good agreement with the outcomes of the ordinary TDSWE. Free particle solution interestingly goes further possibly tracing some signs of new pathways to resolve the mysterious quantum world.

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