نتایج جستجو برای: high energy x ray

تعداد نتایج: 3059727  

زرگرشوشتری, مرتضی, موسوی‌قهفرخی, سیدابراهیم,

In this paper, Bi1.64-xPb0.36CdxSr2Ca2Cu3Oy (BPCSCCO) superconductor with x = 0.0, 0.02, 0.04 and 0.06 is made by the solid state reaction method. The magnetic susceptibility measurements were performed using AC susceptometer. The microstructure and morphology of the samples have been studied by X-ray diffraction, scanning electron microscope and energy dispersive X-ray. The results show that t...

Three high-silica mordenite zeolites differing in SiO440, ratio were prepared by direct synthesis without using any template. The products Si02/A120, ratio is influenced by the starting gel composition. This ratio is increased upon ion-exchange with NH,Cl and subsequent calcination to prepare protonic mordenite. The protonic mordenites with Si02/A1203ra tios of 14.6,29.2 and 34.6 were chara...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 1996

Journal: :Journal of the Visualization Society of Japan 2000

Journal: :Proceedings of the International Astronomical Union 2005

Journal: :Symposium - International Astronomical Union 1983

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