A New Side Effect of Intravitreal Dexamethasone Implant (Ozurdex®)

Dexamethasone implant, 0,7 mg (Ozurdex, Allergan, Inc., Irvine, CA, USA), is drug mostly used in the treatment of the diabetic macular edema and edema related to retinal vein occlusion. By reporting this case we aimed to report a new side effect of 0.7 mg intravitreal dexamethasone implant that has not been reported in the literature before

Retinal Artery Occlusion Secondary to Buerger’s Disease (Thromboangiitis Obliterans)

Purpose. To report a case report of one patient suffering from retinal artery occlusion secondary to Buerger’s disease, in order to raise awareness to this etiology in the differential diagnosis of retinal artery occlusion. Methods. A retrospective case report of a patient with retinal artery occlusion secondary to Buerger’s disease. Data retrieved from the medical records included exposure, complaints, visual acuity, clinical findings and imaging, laboratory assessment, treatment, disease course, and visual outcome. Results. Diagnosis of retinal artery occlusion secondary to Buerger’s disease was established based on ruling out other causes of retinal artery occlusion. Inflammatory retinal vascular disease, permanent vision loss, and macular atrophy were shown in this case. Conclusion. The very first case of central retinal artery occlusion (CRAO) in a 64-year-old male patient with Buerger’s disease. Although diagnosing CRAO based on both fundoscopic and fluorescein angiographic findings is not difficult, revealing underlying condition of CRAO occasionally could be challenging

A New Side Effect of Intravitreal Dexamethasone Implant (Ozurdex®)

Dexamethasone implant, 0,7 mg (Ozurdex, Allergan, Inc., Irvine, CA, USA), is drug mostly used in the treatment of the diabetic macular edema and edema related to retinal vein occlusion. By reporting this case we aimed to report a new side effect of 0.7 mg intravitreal dexamethasone implant that has not been reported in the literature before

Rainfall-Runoff Model Considering Microtopography Simulated in a Laboratory Erosion Flume

9th World Congress of the European-Water-Resources-Association -- JUN 10-13, 2015 -- Istanbul, TURKEYWOS: 000393580100005A comprehensive process-based rainfall-runoff model for simulating overland flow generated in rills and on interrill areas of a hillslope is evaluated using a laboratory experimental data set. For laboratory experiments, a rainfall simulator has been constructed together with a 6.50 m x 1.36 m erosion flume that can be given adjustable slopes changing between 5 % and 20 % in both longitudinal and lateral directions. The model is calibrated and validated using experimental data of simulated rainfall intensities between 45 and 105 mm/h. Results show that the model is capable of simulating the flow coming from the rill and interrill areas. It is found that most of the flow occurs in the form of rill flow. The hillslope-scale model can be used for better prediction of overland flow at the watershed-scale; it can also be used as a building block for an associated erosion and sediment transport model.European Water Resources AssocTUBITAK (Scientific and Technical Research Council of Turkey)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [108Y250]; KRF (Korea Research Foundation)Korea Research FoundationThis study is based on the international project 'Development of a hillslope-scale sediment transport model' bilaterally supported by TUBITAK (Scientific and Technical Research Council of Turkey, project no. 108Y250) and KRF (Korea Research Foundation). Comments by the reviewers are greatly appreciated

A rainfall simulator for laboratory-scale assessment of rainfall-runoff-sediment transport processes over a two-dimensional flume

WOS: 000307924400006A rainfall simulator is an ideal tool for infiltration, soil erosion, and other related research areas for replicating the process and characteristics of natural rainfall. In this study, a laboratory-scale rainfall simulator is developed. Rainfall characteristics including the rainfall intensity and its spatial uniformity, raindrop size, raindrop velocity, and kinetic energy confirm that natural rainfall conditions are simulated with sufficient accuracy. Pressure nozzles are used to spray water corresponding to rainfall intensities ranging from 45 to 105 mm h(-1). The simulator produces rainfall with uniformity coefficient changing between 82 and 89%. The raindrops falling with an initial velocity from a height of 2.43 m have median diameters of 2.2-3.1 mm. The impact velocities of the median size raindrops deviate from their terminal velocities with a relative error between 6 and 15%. The accompanying erosion flume can be given slope up to 20% in lateral and longitudinal directions. During the experiments, flow measurement is taken from two outlets at the end of the flume to distinguish the contribution of interrill areas into rills. Experiments result in typical rainfall-induced hydrographs and sedigraphs observed under natural conditions. This shows the ability of the rainfall simulator for use in sediment transport processes over hillslopes. (c) 2012 Elsevier B.V. All rights reserved.TUBITAK (Scientific and Technical Research Council of Turkey)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [108Y250]; KRF (Korea Research Foundation)Korea Research Foundation [KRF-2008-614-D00018]This study is based on the international project 'Development of a hillslope-scale sediment transport model' bilaterally supported by TUBITAK (Scientific and Technical Research Council of Turkey, project no. 108Y250) and KRF (Korea Research Foundation, grant no. KRF-2008-614-D00018) and jointly coordinated by H Aksoy and J Yoon

Laboratory experiments of sediment transport from bare soil with a rill

WOS: 000325960100011Mathematical models developed for quantification of sediment transport in hydrological watersheds require data collected through field or laboratory experiments, but these are still very rare in the literature. This study aims to collect such data at the laboratory scale. To this end, a rainfall simulator equipped with nozzles to spray rainfall was constructed, together with an erosion flume that can be given longitudinal and lateral slopes. Eighty experiments were performed, considering microtopographical features by pre-forming a rill on the soil surface before the start of each experiment. Medium and fine sands were used as soil, and four rainfall intensities (45, 65, 85 and 105 mm h(-1)) were applied in the experiments. Rainfall characteristics such as uniformity, granulometry, drop velocity and kinetic energy were evaluated; flow and sediment discharge data were collected and analysed. The analysis shows that the sediment transport rate is directly proportional to rainfall intensity and slope. In contrast, the volumetric sediment concentration stays constant and does not change with rainfall intensity unless the slope changes. These conclusions are restricted to the conditions of experiments performed under rainfall intensities between and 105 mm h(-1) for medium and fine sands in a 136-cm-wide, 650-cm-long and 17-cm-deep erosion flume with longitudinal and lateral slopes varying between 5 and 20%.IRD-DSF; INRAInstitut National de la Recherche Agronomique (INRA); IRD; TUBITAK (Scientific and Technical Research Council of Turkey)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [108Y250]; NRF (National Research Foundation)National Research Foundation - South Africa; Korean GovernmentKorean Government [NRF-2008-614-D00018, NRF-2011-013-D00124, NRF-2013R1A1A4A01007676]; Korea UniversityPublication was made possible with the support provided by the IRD-DSF and was undertaken in the framework of the OMERE Observatory funded by INRA and IRD. This study is based on the international project "Development of a hillslopescale sediment transport model" bilaterally supported by TUBITAK (Scientific and Technical Research Council of Turkey, project no. 108Y250) and the NRF (National Research Foundation) grant funded by the Korean Government (NRF-2008-614-D00018; NRF-2011-013-D00124; NRF-2013R1A1A4A01007676) and jointly coordinated by H. Aksoy and J. Yoon. This research was also supported in part by a Korea University Grant