نتایج جستجو برای: gamma ray gr
تعداد نتایج: 419111 فیلتر نتایج به سال:
ABSTRACT Background : The application of DU emanation for first time contaminated certain areas in the south west region of Iraq after the second Gulf war (1991). These contaminated areas were discovered in 1994. Radioactive contamination was detected using the nuclear enterprise PCM5/1 in soil samples collected from two regions near by grazing lands. This study was done for assessment of D...
In this study, 34 soil samples were collected from the east of the Shazand power plant to the Arak city, with a length of 25 km. The specific activities of radionuclides of 226Ra, 232Th, 40K, and 137Cs were determined using gamma-ray spectrometry method. Gamma-ray spectra registered to employ high purity germanium (HPGe) detector with 30% relative efficiency. Specific activities of correspondi...
We present x-ray observations of the nearby BL Lac PKS 2155-304 taken when it was undergoing a GeV/TeV gamma-ray outburst. During the outburst we measured xray fluxes in the 2-10 keV band that are the largest ever observed for PKS 2155-304. Comparison of these November 1997 measurements and other x-ray observations made contemporaneously with GeV or TeV gamma-ray observations indicate that x-ra...
Islet transplantation for the treatment of type 1 diabetes mellitus is limited in its clinical application mainly due to early loss of the transplanted islets, resulting in low transplantation efficiency. NKT cell-dependent IFN-gamma production by Gr-1(+)CD11b(+) cells is essential for this loss, but the upstream events in the process remain undetermined. Here, we have demonstrated that high-mo...
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