OALib Journal期刊

ISSN: 2333-9721




2017 ( 9 )

2016 ( 22 )

2015 ( 72 )

2014 ( 102 )


匹配条件: “Mehmet ?zalp” ,找到相关结果约3520条。
Determining Physical Characteristics of Watersheds in Artvin Province Using SRTM and Topographic Map Data
Saim Y?ld?r?mer, Mehmetzalp, Esin Erdo?an Yüksel
Dogal Afetler ve Cevre Dergisi , 2016, DOI: 10.21324/dacd.91929
Abstract: It is a fact that applying Geographical Information Systems (GIS) and associated software and/or modules on studies regarding use and protection of water resources have been increased in recent years. With such programs, some physical characteristics of watersheds including borders, land use, drainage system, slope and elevation can be determined in a quick, detailed and reliable way. In this research, the aim was to use ArcHydro module -integrated with ArcGIS 10.3.1 one of the programs of GIS- to assess some features (borders, drainage, size, steepness, etc.) of river basins located within Artvin province. In order to create Digital Elevation Model (DEM), data from both “Shuttle Radar Topography Mission (SRTM)” and “topographical map” was used; thus, providing comparison of the results gathered from these two base maps. In general, it was stated that both SRTM and topographic map data resulted in very close findings in determining watershed characteristics. For example, while the number of large watersheds (10-100 km2) counted as 315 and 312 by SRTM and topographic maps, respectively, the number of very large watersheds (> 100 km2) was 30 according to both base maps. Moreover, in grouping of slope classification, as 89.29% of the province was found to be within the very-steep slope class based on the topographic maps, a very similar result of 87.13% was revealed using SRTM data.
Role of Terracing and Reforestation Efforts on Improving Soil Properties in Degraded Steep Lands
Mehmetzalp, Ferit Deh?et, Bülent Turgut, Saim Y?ld?r?mer, Eren ?nanl?
Dogal Afetler ve Cevre Dergisi , 2015, DOI: 10.21324/dacd.92417
Abstract: Serious land degradation have been occurring during the building of new roads associated with the construction of Deriner Dam, one of 15 large dams planned by the General Directorate of State Hydraulic Affairs and implemented within the Coruh Dam Projects. In this study, whether terracing and planting of seedling efforts in degraded areas as a result of building new roads within erosion control and reforestation efforts have any effect on improving soil characteristics were investigated. In accordance with this purpose, parameters including soil texture, pH, organic matter, total nitrogen, total lime, and electrical conductivity were determined for 45 soil samples taken from three different areas; two of which were erosion control areas where terraces built and planted with acacia and yellow pine seedlings, along an undisturbed (control) area with natural forests. After evaluating statistical analyses run on the soils data, it was determined that the reforestation efforts have resulted in improvements of soil properties at some degree but when they are compared to the soils of the undisturbed natural forest, it is clear that the degree of improvement is not sufficient yet. For example, while the organic matter of 3.71% and pH of 7.69 were determined for the forest area, same parameters were found as 1.13% and 7.99 for the acacia and 0.86% and 7.93 for the yellow pine areas, respectively.
The effect of air dried conditions on mechanical and physical properties of laminated and impregnated wood
M zalp, S Korkut
African Journal of Biotechnology , 2009,
Abstract: In this study, laminated Scotch pine samples bonded with polyurethane adhesive were impregnated with water repellent (protim WR230) and preservative (tanalith-C). Non-impregnated and impregnated Scotch pine samples were air-dried by placing them uncovered in a concrete above ground for one year. Bending strength, compression strength, bonding strength and physical properties were determined. Bending strength was reduced by 20% for non-impregnated samples, 12% for tanalith impregnated samples, and 11.3% for protimWR230. Compression strength was increased by 5.5% for nonimpregnated samples, 10.1% for tanalith treated and 10.4% for ProtimWR230. Bonding strength was reduced by 8.3% for untreated samples, but increased by 36.05 and 35.7% for tanalith and ProtimWR230, respectively. Impregnated samples were colonized by fungi during the one year outdoor conditioning; both dimensional and insect damages were not observed. Treated samples were well protected but nonimpregnated samples were covered by white rot, insects, color changes and considerable odour. In impregnating test samples, water and relative humidity affected the bonding properties positively for one year, and this increased the bonding and compression strength. But bending strengths were reduced. In determining the bonding and compression strengths, the applied force parallel to adhesive layer; while in determining bending strength the applied force is vertical to adhesive layer.
Psychiatric disorders and learning problems in children and adolecents with Sickle Cell Disease
zalp Ekinci,Tanju ?elik
Medical Journal of Bakirk?y , 2012,
Abstract: Sickle cell disease (SCD) is characterized by a chronic course and disabling complications including recurrent pain attacks. Children and adolescents with SCD appear to be at risk for adjustment problems and impaired psychosocial functioning. The available research indicates that children and adolescents with SCD have a lower quality of life and a higher frequency of neuro-psychiatric problems than that of normal controls. Among the neuro-psychiatric problems, depression, anxiety disorders, learning disorders, externalizing behavior problems, enuresis and attention difficulties are commenly reported. This article aims to review the current literature on psychiatric disorders and learning problems in children and adolescents with SCD.
Musa ?ZALP,Ebru Vesile ?CALIR
Middle East Technical University Journal of the Faculty of Architecture , 2008,
Anti-Invariant Semi-Riemannian Submersions from Almost Para-Hermitian Manifolds
Y?lmaz Gündüzalp
Journal of Function Spaces , 2013, DOI: 10.1155/2013/720623
Abstract: We introduce anti-invariant semi-Riemannian submersions from almost para-Hermitian manifolds onto semi-Riemannian manifolds. We give an example, investigate the geometry of foliations which are arisen from the definition of a semi-Riemannian submersion, and check the harmonicity of such submersions. We also obtain curvature relations between the base manifold and the total manifold.
Effects of oral anticoagulation with various INR levels in deep vein thrombosis cases
Ufuk Yetkin,zalp Karabay, Hakan ?nol
Trials , 2004, DOI: 10.1186/1468-6708-5-1
Abstract: During the 6-year period between January 1997 and January 2003, 386 patients with venous thromboembolism of the lower extremities were admitted to the Cardiovascular Surgery Outpatient Clinic of Alsancak State Hospital. Of the 386 patients, 198 (51.2%) were women, and the average age was 52.3 years. All diagnoses of venous thromboembolism were confirmed by means of Doppler ultrasonography. Further investigation showed occult neoplasms in 22 (5.6%) of the cases. We excluded the patients with occult disease, and the remaining 364 constituted our study population.Oral anticoagulation was standardized at 6 months' duration in all cases. We divided the patients into two groups. Group I consisted of 192 patients (52.7%) with INR values between 1.9 and 2.5; Group II comprised 172 patients with INR values between 2.6 and 3.5. Complications in each group were assessed and compared. The minor hemorrhage rate was 1.04% in Group I and 4.06% in Group II. The major hemorrhage rate was also 1.04% in Group I and was 6.3% in Group II. We determined that the complication rates for both minor and major hemorrhage were significant in patients with INR values above 2.5.Oral anticoagulation must be followed closely in patients with venous thromboembolism. Higher INR levels are associated with significant increases in hemorrhage and associated complications. INR values of 2.0 to 2.5 are sufficient for long-term anticoagulant therapy, ensuring ideal anticoagulation levels and minimizing the complication rate.Deep vein thrombosis (DVT) is the presence in lower-extremity veins of a thrombus that obstructs the branches and blood flow. The natural course of DVT therapy is associated with significant morbidity and mortality rates [1]. Standard therapy for acute DVT consists of heparin followed by oral warfarin [2]. To monitor therapy with coumadin anticoagulants, prothrombin time (PT) was the standard until as recently as the past decade [3]. Because the therapeutic range of PT depends on many
Combination of Superficial Cervical Plexus Block and Local Infiltration Anesthesia in Carotid Endarterectomy: A Retrospective Analysis
Journal of Neurological Sciences , 2011,
Abstract: Objective: We retrospectively investigated the efficacy of combination of superficial cervical plexus block (CPB) and local infiltration anesthesia in patients underwent carotid endarterectomy (CEA).Methods: After ethics approval, we searched medical records of patients who underwent CEA with combination of superficial CPB and local infiltration anesthesia performed before surgery. Data were given as mean±SD or number(%).Results: There were 22 patients (age: 68.9±9.2 yr, weight: 73.7±11.1 kg) who underwent CEA under defined anesthesia method from June 2007 to April 2011. The amounts of local anesthetics used for combination anesthesia and intraoperative supplementary anesthesia (95.4%) were 29.9±11.2 mL and 12.1±5.6 mL, respectively. All patients received fentanyl (87.5±52.1 μg) and midazolam (1.8±0.6 mg), and nine patients (40.9%) received propofol (<2 mg/kg/hr) intraoperatively. Surgery was completed successfully in all patients. Pain scores (0-10) of eighteen patients (81.8%) who were transferred to recovery unit were ≤3 without receiving any analgesic. Myocardial infarction, stroke or death were not observed.Conclusions: Carotid endarterectomy can be successfully performed under combined anesthesia including superficial CPB and local infiltration anesthesia. In addition to this, the percentage of supplemental anesthetic drug requirement is high intraoperatively and pain scores of patients are low postoperatively.
Broadbent’s Cognitive Approach and Its Effect on Motor Performance in Sports  [PDF]
Mehmet Koyuncu
Psychology (PSYCH) , 2011, DOI: 10.4236/psych.2011.25073
Abstract: This study aimed to test Broadbent’s attentional filtering theory in the perceptual motor task of dart throwing. Dart board size was manipulated in order to reduce the amount of information to be filtered in the participants’ field of view. Sample consisted of 122 college students (63 males and 59 females) ranging in age from 17 to 36. Participants’ task was to throw 18 darts at the center of targets 45 cm, 30 cm and 15 cm in diameter. Performance was measured as radial distance from the bulls-eye of each dart. One way ANOVA, Repeated Measure of ANOVA was used in the analysis of the obtained data. The results of our study showed that dart throwing performance gave better results in cases where target’s field of view was reduced, compared to the ones in which target’s field of view was increased. Consistent with Broadbent’s central claim, results showed that fewer stimuli in the field of view required less processing, thus, better performance. Also, those subjects that were exercising regularly did better than the ones that were not exercising. This study provides evidence that reducing target’s field of view in dart throwing increases the chances to obtain better results.
A Survey on Geometric Dynamics of 4-Walker Manifold  [PDF]
Mehmet Tekkoyun
Journal of Modern Physics (JMP) , 2011, DOI: 10.4236/jmp.2011.211163
Abstract: A Walker n-manifold is a semi-Riemannian n-manifold, which admits a field of parallel null r-planes, with r ≤ 2/n . It is well-known that semi-Riemannian geometry has an important tool to describe spacetime events. Therefore, solutions of some structures about 4-Walker manifold can be used to explain spacetime singularities. Then, here we present complex and paracomplex analogues of Lagrangian and Hamiltonian mechanical systems on 4-Walker manifold. Finally, the geometrical-physical results related to complex (paracomplex) mechanical systems are also discussed.

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