نتایج جستجو برای: concentrated source and source over circular region
تعداد نتایج: 17021504 فیلتر نتایج به سال:
this study investigates the contributions of atlantic ocean to june-august rainfall over uganda and western kenya (ku). the study has utilized the datasets including precipitation from the global precipitation climatology centre, north atlantic oscillation index (naoi), south atlantic ocean dipole index (saodi), era-interim reanalysis, and the atlantic ocean sea surface temperature (sst). singu...
در این پایان نامه به بررسی کمی یک سیستم تصویربرداری پراش افزوده(diffraction enhanced imaging-dei) پرداخته ایم. بدین منظور مشخصات توان و شار و نحوه توزیع پرتوهای سینکروترون مورد بررسی قرار داده و سپس محاسبات پرتو خط بیم(national synchrotron light source) nsls شامل رزولوشن انرژی و شار رسیده به نمونه را انجام دادیم و در نهایت با ارائه یک مدل برای سیستم dei میزان بهبود کنتراست تصویر در این سیستم نس...
Evaluating the Effect of Graphite Source and Operating Conditions on the Synthesis of Graphene Oxide
In this research graphene oxide was synthesized by two methods. These methods were achieved by changing the improved Hummers’ and modified Hummers’ methods. Structure of graphene oxide was characterized by scanning electron microscopy (SEM) images, X-ray diffraction (XRD) patterns, Raman spectroscopy and Fourier transform infrared (FTIR) spectra. According to SEM image, the thickness of graphen...
Recorded ground motions in near fault region have completely distinct nature from others that recorded in far field of the fault. Near source outcomes cause much of the seismic energy to appear in a single large and long period pulse at the beginning of the velocity record. Assaluyeh complex is located near the reverse Assaluyeh fault that is a segment of Mountain Front Fault. This complex cont...
in this study 152 bacterial strains were isolated from the contaminated oils in the southwest of iran. hemolysis was used as a criterion for the primary isolation of biosurfactant producing-bacteria. fifty five strains had haemolytic activity , among them tweleve strains were good biosurfactant producers by measuring surface tension and emulsification activity.two microorganism showed the high...
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