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Drought is a natural disaster that can have devastating economic, environmental, and social impacts on a global, national, and regional scale. Remote sensing technology is the most powerful tool to determine of drought categories and analyse drought severity, vulnerability and its trends. Because data that is temporal, quick, wide-area, and repeating can be obtained via remote sensing technologies. The calculation of drought indices with the use of remote sensing technology is crucial for assessing the severity of the drought and its evolution over time. In this study, the Central Anatolian Basin, one of Turkey's agricultural basins, was subjected to a temporal and spatial drought analysis between 2000 and 2023. In order to analyze the agricultural drought in the Central Anatolian Basin, drought indices such as Normalized Difference Vegetation Index (NDVI), Normalized Difference Water Index (NDWI), Normalized Difference Drought Index (NDDI), Vegetation Condition Index (VCI), Temperature condition index (TCI), Vegetation Health Index (VHI), Precipitation Condition Index (PCI), and Scaled Drought Condition Index (SDCI) were calculated. Moderate resolution Imaging Spectroradiometer (MODIS) data collection were used to calculate the NDVI, NDWI, NDDI VCI and TCI drought indices and PCI was calculated using the Climate Hazards Group Infrared Precipitation with Station CHIRPS data set. With the results obtained, the change in drought severity in the Central Anatolian Basin over the years was observed and drought severity, plant health status and surface temperature were compared. Additionally Temporal trend and Spatial trend of agricultural drought were determine using Sen's slope and The Mann – Kendal non parametric test. [ABSTRACT FROM AUTHOR]

Due to unplanned and uncontrolled expansion of urban areas, rural land cover types have been replaced with artificial materials. As a result of these replacements, a wide range of negative environmental impacts seriously impacting human health, natural areas, ecosystems, climate, energy efficiency, and quality of living in town center. In this study, the impact of land surface temperature with respect to land cover and land use categories is investigated and evaluated for Istanbul, Turkey. Land surface temperature data was extracted from 21 October 2014 dated Landsat 8 OLI data using mono-window algorithm. In order to extract land use/cover information from remotely sensed data wetness, greenness and brightness components were derived using Tasseled Cap Transformation. The statistical relationship between land surface temperature and Tasseled Cap Transformation components in Istanbul was analyzed using the regression methods. Correlation between Land Surface Temperature and Meteorological Stations Temperature calculated %74.49. [ABSTRACT FROM AUTHOR]

The clinical perspective on transvenous lead extraction has significantly changed with experience, new techniques and tools. The laser asisted pacemaker lead extraction technique has been described as a highly successfull, effective and safe procedure. We present our experience with the excimer laser extraction procedure that we started in Turkey on May 1999. Materials: We performed a total of 24 leads extraction in 16 patients (7 females, 9 males) mean age 54 ± 21 years (range: 4-79 years) between May 1999 and December 2004 using the subclavian apporach with the CVX-300 Excimer Laser System (Spectranetics). The indications were pocket infection in 7 patients, lead dysfunction in 5 and lead fracture in 3 in bacterial endocarditis in 1. All leads had passive fixation except one. The leads were 6 atrial, 18 ventricular. The age of leads was 9.5 ± 4.5 years.Results The complete success was in 21 leads. Two leads were extracted by the locking stylet with simple traction. Nineteen leads were extracted by laser asisted device. Three leads could not be extracted. The locking stylet did not reach the tip in one lead, the tip of the lead fractured in one lead and was removed at open heart surgery. The 14 Fr laser sheat could not be advanced trough the right subclavian vein in one lead because of the heavy calcification around the lead, No complication occured during the procedure and the hospital stay. In one patient an arm edema devoloped 15 days later probably due to the subclavian vein thrombosis an resolved with warfarin therapy. Conclusion Although the number of our patients is small, the laser asisted lead extraction seems to be an effective and safe method in extracting chronic permanent pacemaker leads through the vein entry site. The clinical experience and appropriate training are needed to perform this procedure. [ABSTRACT FROM PUBLISHER]