دانشجو فایل

مرکز دانلود انواع فایل های دانشجویی و دانش آموزی(تحقیق,پاورپوینت,پروژه,مقاله,سورس کد و ...)

دانشجو فایل

مرکز دانلود انواع فایل های دانشجویی و دانش آموزی(تحقیق,پاورپوینت,پروژه,مقاله,سورس کد و ...)

دانلود مقاله علمی Active Sites in Supported Single-Site Catalysts: An NMR Perspective

دسته بندی : مقاله های انگلیسی نام مقاله : Active Sites in Supported Single-Site Catalysts: An NMR Perspective تعداد صفحات : 17 فایل : pdf مقدمه : Development of heterogeneous catalysts requires detailed structural characterization of active sites, an essential step towards establishing structure-activity relationships and promoting rational designs of new catalysts. Solid-state NMR has emerged as a powerful approach to provide key molecular level information about active site structur ...

اصل و ترجمه مقاله لاتین Seismic active pressure distribution history behind rigid retaining walls

Seismic active pressure distribution history behind rigid retaining walls Abstract Evaluating the seismic active earth pressure on retaining walls is currently based on pseudo-static method in practices. In this method, however, it is not simple, choosing an appropriate value for earthquake coefficient, which should fully reflect the dynamic characteristics of both soil and loading is an important problem. On the other hand, by using only two extra dynamic parameters that are shear wave velocit ...