We propose a solution to the problem of accretion disc sizes in active galactic nuclei being larger when measured by reverberation mapping than predicted theory. Considering blackbody reprocessing on with thickness profile $H(r)$, our invokes steep rim or rippled structures irradiated central lamp-post. model continuum lags and faint bright spectral energy distribution (SED) best-studied case N...

Steel has remained the most crucial of all structural materials. However, the steel production processes have changed over the years. Currently, due to the tendency of eliminating high energy consuming technologies, in both the international and domestic steel industry, liquid steel is manufactured in two basic aggregates: oxygen-blown converters and electric arc furnaces 1 . The development of...

Bu çalışmanın amacı, Güneydoğu Anadolu bölgesindeki Yukarı Dicle Havzasında ve Kuzey Suriye’deki Habur yapılan arkeolojik araştırmalarda ele gecen Erken Tunç dönemine ait Dark Rimmed Orange Bowl Ware (DROB-Ware) mal grubunun, kimyasal petrografik analiz yöntemlerini kullanarak üretim yerinin belirlenmesidir. amaçla, her iki bölgeden alınan DROB örneklerinin yanında, söz konusu seramiklerin üret...

• Introduction • Steel Composition and Mechanical Properties • Welding of Steel • Microstructure of NUCu-OSM Steel • Estimate of Atmospheric Corrosion Resistance of NUCu-OSM Steel • Summary • Acknowledgment • References • Appendix 1. Monotonic Tensile Stress-Strain Curves for NUCu-OSM Steel • Appendix 2. Steel Compositions and Concentration Ranges in Data Bases Used for Atmospheric Corrosion Ra...